/* ========================================
   TEACHTOOL - THÈME SOMBRE MODERNE 2025
   ======================================== */

/* --- Variables CSS pour thème sombre --- */
:root {
    /* Couleurs principales - thème sombre */
    --primary: #1a3557;
    --primary-light: #2e5c8a;
    --primary-color: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary-color: #8b5cf6;
    --accent: #00bfae;
    --accent-light: #5df2d6;
    --accent-color: #06b6d4;
    
    /* Couleurs neutres - thème sombre */
    --bg-primary: #0f172a;      /* Fond principal très sombre */
    --bg-secondary: #1e293b;    /* Fond secondaire */
    --bg-tertiary: #334155;     /* Fond tertiaire */
    --bg-card: #1e293b;         /* Fond des cartes */
    --bg-input: #374151;        /* Fond des inputs */
    --bg-hover: #475569;        /* Fond au survol */
    
    --text-primary: #f8fafc;    /* Texte principal */
    --text-secondary: #cbd5e1;  /* Texte secondaire */
    --text-muted: #94a3b8;      /* Texte atténué */
    --text-accent: #22d3ee;     /* Texte accent */
    
    --border-color: #475569;    /* Couleur des bordures */
    --border-light: #64748b;    /* Bordures claires */
    
    /* Couleurs sémantiques - adaptées pour le sombre */
    --success: #22c55e;
    --success-dark: #16a34a;
    --warning: #f59e0b;
    --warning-dark: #d97706;
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --info: #06b6d4;
    --info-dark: #0891b2;
    --warning: #f59e0b;
    --warning-dark: #d97706;
    
    /* Dimensions et espacements */
    --container-max-width: 1400px;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* Ombres pour thème sombre */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    
    /* Typographie */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Transitions */
    --transition: all 0.2s ease-in-out;
    --transition-fast: all 0.15s ease-in-out;
    --transition-slow: all 0.3s ease-in-out;
}

/* --- Reset et base --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-primary) 0%, #1a202c 100%);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
    width: 100vw;
    max-width: 100vw;
    margin: 0;
    padding: 0;
}

/* --- Layout principal --- */
.main-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-left: 280px;
    transition: margin-left 0.3s ease;
    min-height: 100vh;
    width: calc(100vw - 280px);
    max-width: calc(100vw - 280px);
    box-sizing: border-box;
}

.main-container.sidebar-collapsed {
    margin-left: 80px;
    width: calc(100vw - 80px);
    max-width: calc(100vw - 80px);
}

/* --- Menu latéral --- */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: width 0.3s ease;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar.collapsed {
    width: 80px;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 80px;
    background: var(--bg-tertiary);
}

.sidebar.collapsed .sidebar-header {
    padding: 1rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.sidebar.collapsed .logo-text {
    display: none;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius);
    object-fit: cover;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.logo-text h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    font-weight: 500;
    line-height: 1;
}

.user-indicator {
    color: var(--text-secondary) !important;
    font-size: var(--font-size-xs) !important;
}

.sidebar-toggle {
    background: none;
    border: none;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
    font-size: 1.2rem;
}

.sidebar-toggle:hover {
    background: var(--bg-hover);
    color: var(--primary-color);
}

.sidebar-menu {
    padding: 1rem 0;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 120px);
}

.menu-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border: none;
    background: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    border-radius: 0;
    position: relative;
    color: var(--text-secondary);
}

.sidebar.collapsed .menu-item {
    padding: 1rem;
    justify-content: center;
}

.menu-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: none;
}

.menu-item.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--text-primary);
}

.menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent-color);
}

.menu-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    background: var(--bg-hover);
    flex-shrink: 0;
    transition: var(--transition);
    position: relative;
}

.menu-item.active .menu-icon {
    background: rgba(255, 255, 255, 0.2);
}

/* Badge de notification dans le menu */
.menu-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.5);
    animation: pulse-badge 2s infinite;
    z-index: 10;
    border: 2px solid var(--bg-card);
}

@keyframes pulse-badge {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.9;
    }
}

.menu-content {
    flex: 1;
    min-width: 0;
    transition: var(--transition);
}

.sidebar.collapsed .menu-content {
    display: none;
}

.menu-title {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: inherit;
}

.menu-subtitle {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    line-height: 1.2;
}

.menu-item.active .menu-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* --- Contenu principal --- */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    padding-bottom: 0;
    overflow-y: auto;
    background: var(--bg-primary);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-height: calc(100vh - 0px);
}

/* --- Sections du contenu --- */
section, 
#ajout-note, 
#menu-selection, 
#ajout-classe, 
#ajout-eleve, 
#import-notes-section,
#section-vue-classe,
#section-plan-classe,
#section-appel {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin: 0 2rem 2rem 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    width: calc(100% - 4rem);
    max-width: calc(100% - 4rem);
    box-sizing: border-box;
    flex-shrink: 0;
}

/* --- Titres et typographie --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

/* --- Boutons modernes --- */
button, .btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
}

button:hover, .btn:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

button:active, .btn:active {
    transform: translateY(0);
}

button:disabled, .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Variantes de boutons */
.btn-secondary, .button-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover, .button-secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, var(--success-dark) 100%);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success-dark) 0%, #15803d 100%);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, var(--danger-dark) 100%);
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--danger-dark) 0%, #b91c1c 100%);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
}

/* --- Formulaires modernes --- */
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-family: inherit;
    background: var(--bg-input);
    color: var(--text-primary);
    transition: var(--transition);
    max-width: 350px;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--bg-secondary);
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-right: 6px;
}

/* --- Tableaux modernes --- */
table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

th, td {
    padding: 1rem 0.8rem;
    text-align: center;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

tr:nth-child(even) {
    background: var(--bg-hover);
}

tr:hover {
    background: var(--bg-tertiary);
    transition: background 0.15s;
}

tfoot td {
    font-weight: bold;
    background: var(--bg-secondary);
}

/* --- Colonnes spéciales --- */
td:last-child, th:last-child {
    max-width: 260px;
    min-width: 120px;
    word-break: break-word;
    white-space: pre-line;
    font-style: italic;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-left: 2px solid var(--accent-color);
    text-align: left;
}

/* --- Messages et stats --- */
#messageClasse, #messageEleve, #messageDevoir, #messageNote, #importNotesMessage {
    margin-top: 12px;
    font-weight: bold;
    min-height: 1.5em;
    font-size: 1.08em;
    color: var(--text-primary);
}

.stats, .statistiques, .statistiques-globales, .stats-indicateurs {
    margin: 1.5em 0;
    font-size: 1.15em;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 12px 18px;
    box-shadow: var(--shadow);
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.explication-indicateurs {
    margin: 1.5em 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 14px 18px;
    max-width: 500px;
    font-size: 1em;
    color: var(--text-secondary);
    box-shadow: var(--shadow);
}

/* --- Graphiques --- */
canvas {
    max-width: 900px;
    margin: 1.5em auto;
    display: block;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    padding: 18px 12px;
}

/* === SECTION APPEL - THÈME SOMBRE === */

/* Contrôles d'appel */
.appel-controls {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.appel-controls label {
    color: var(--text-secondary) !important;
    font-weight: 500;
}

.appel-controls select,
.appel-controls input {
    color: var(--text-primary) !important;
    background: var(--bg-input) !important;
    border: 1px solid var(--border-color) !important;
}

/* En-tête d'appel */
.appel-header {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color);
}

.appel-header h4 {
    color: var(--text-primary) !important;
    margin: 0 0 0.5em 0;
}

.appel-header p {
    color: var(--text-secondary) !important;
}

/* Titres de section */
#section-appel h3,
#section-appel h4 {
    color: var(--text-primary) !important;
}

/* Archives d'appel */
.appel-archives-tree {
    font-family: 'Courier New', monospace;
    color: var(--text-primary) !important;
}

#appel-archives-container {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color) !important;
}

#appel-semaines-tree {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

/* Dossiers de semaine */
.appel-semaine-folder {
    padding: 0.5em;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5em;
    transition: background-color 0.2s ease;
    color: var(--text-primary) !important;
}

.appel-semaine-folder:hover {
    background-color: var(--bg-hover) !important;
    color: var(--text-primary) !important;
}

.appel-semaine-folder.expanded {
    background-color: var(--bg-tertiary) !important;
    color: var(--primary-color) !important;
}

.appel-folder-name {
    font-weight: 500;
    color: var(--primary-color) !important;
}

/* Liste des fichiers */
.appel-files-list {
    display: none;
    padding-left: 2em;
    background-color: var(--bg-hover) !important;
    color: var(--text-primary) !important;
}

.appel-semaine-folder.expanded .appel-files-list {
    display: block;
}

/* Items de fichier */
.appel-file-item {
    padding: 0.4em 0.8em;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.2s ease;
    color: var(--text-primary) !important;
}

.appel-file-item:hover {
    background-color: var(--bg-tertiary) !important;
    color: var(--success) !important;
}

.appel-file-item:last-child {
    border-bottom: none;
}

.appel-file-name {
    display: flex;
    align-items: center;
    gap: 0.5em;
    flex: 1;
    color: var(--text-primary) !important;
}

.appel-file-name span {
    color: var(--text-primary) !important;
}

.appel-file-name small {
    color: var(--text-muted) !important;
}

.appel-file-icon {
    color: var(--success) !important;
}

/* Boutons d'action */
.btn-view-appel {
    background: var(--info) !important;
    color: var(--text-primary) !important;
}

.btn-delete-appel {
    background: var(--danger) !important;
    color: var(--text-primary) !important;
}

/* Grille d'appel */
.appel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1em;
    padding: 1em;
}

.appel-eleve {
    display: flex;
    align-items: center;
    padding: 0.8em;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    transition: all 0.2s ease;
    color: var(--text-primary);
}

.appel-eleve.present {
    border-color: var(--success);
    background: var(--bg-tertiary);
}

.appel-eleve.absent {
    border-color: var(--danger);
    background: var(--bg-tertiary);
}

.appel-eleve.retard {
    border-color: var(--warning);
    background: var(--bg-tertiary);
}

.appel-eleve-nom {
    flex: 1;
    font-weight: 500;
    margin-right: 1em;
    color: var(--text-primary) !important;
}

.appel-statut-btns {
    display: flex;
    gap: 0.5em;
}

.appel-statut-btn {
    padding: 0.4em 0.8em;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9em;
    transition: all 0.2s ease;
    color: var(--text-primary);
    background: var(--bg-hover);
}

.appel-statut-btn.active {
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.btn-present {
    background: var(--success) !important;
    color: var(--text-primary) !important;
}

.btn-absent {
    background: var(--danger) !important;
    color: var(--text-primary) !important;
}

.btn-retard {
    background: var(--warning) !important;
    color: var(--text-primary) !important;
}

/* Forceurs de couleur pour les archives */
#appel-archives-container *,
#appel-archives-container .appel-file-name span,
#appel-archives-container .appel-folder-name,
#appel-archives-container small {
    color: inherit !important;
}

/* --- Scrollbar moderne pour thème sombre --- */
::-webkit-scrollbar {
    height: 10px;
    width: 10px;
    background: var(--bg-primary);
    border-radius: 8px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* === TABLEAU DE BORD MODERNE - VUE D'ENSEMBLE === */

#vue-classe-container {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    background: var(--bg-primary);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin: 1.5rem 0;
    padding: 1rem;
    border: 1px solid var(--border-color);
    /* Améliorer le scroll horizontal */
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--bg-secondary);
}

/* Container pour le scroll horizontal */
#vue-classe-container > div[style*="overflow-x"] {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 1rem;
}

/* Styles pour la scrollbar horizontale */
#vue-classe-container::-webkit-scrollbar {
    height: 8px;
}

#vue-classe-container::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

#vue-classe-container::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

#vue-classe-container::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Table principale du tableau de bord */
#vue-classe-container table {
    width: 100%;
    min-width: 800px; /* Largeur minimale pour éviter l'écrasement */
    background: var(--bg-card);
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border-collapse: separate;
    border-spacing: 0;
    margin: 0;
    font-size: 0.9rem;
    table-layout: auto; /* Permet au tableau d'ajuster automatiquement les colonnes */
}

/* En-tête du tableau modernisé */
#vue-classe-container thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    position: sticky;
    top: 0;
    z-index: 10;
}

#vue-classe-container th {
    background: transparent;
    color: var(--text-primary);
    font-weight: 700;
    text-align: center;
    padding: 0.8rem 0.5rem;
    border: none;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    position: relative;
    white-space: nowrap;
    min-width: 80px; /* Largeur minimale pour les colonnes */
    max-width: 120px; /* Largeur maximale pour éviter l'étalement */
}

/* Colonne nom plus large */
#vue-classe-container th:first-child {
    min-width: 120px;
    max-width: 180px;
    text-align: left;
    padding-left: 1rem;
}

/* Colonnes de notes plus compactes */
#vue-classe-container th.header-notes {
    min-width: 60px;
    max-width: 90px;
    padding: 0.8rem 0.3rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Colonnes moyennes */
#vue-classe-container th.header-moyenne {
    min-width: 70px;
    max-width: 100px;
}

/* Boutons d'action */
#vue-classe-container th.header-evolution,
#vue-classe-container th.header-tnf,
#vue-classe-container th.header-avert {
    min-width: 80px;
    max-width: 100px;
}

#vue-classe-container th:first-child {
    text-align: left;
    padding-left: 1.5rem;
}

#vue-classe-container th:last-child {
    padding-right: 1.5rem;
}

/* Séparateurs entre colonnes */
#vue-classe-container th:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: rgba(255, 255, 255, 0.2);
}

/* Cellules du corps du tableau */
#vue-classe-container tbody td {
    color: var(--text-primary);
    padding: 0.8rem 0.5rem;
    border: none;
    text-align: center;
    vertical-align: middle;
    transition: all 0.3s ease;
    position: relative;
    min-width: 80px;
    max-width: 120px;
    overflow: visible;
}

#vue-classe-container tbody td:first-child {
    text-align: left;
    padding-left: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    min-width: 120px;
    max-width: 180px;
    white-space: nowrap;
}

#vue-classe-container tbody td:last-child {
    padding-right: 1rem;
}

/* Colonnes de notes plus compactes */
#vue-classe-container tbody td.note-column {
    min-width: 60px;
    max-width: 90px;
    padding: 0.8rem 0.3rem;
    overflow: visible;
}

/* Colonnes moyennes */  
#vue-classe-container tbody td.moyenne-cell {
    min-width: 70px;
    max-width: 100px;
    padding: 0.6rem 0.4rem !important;
}

/* Cellules des boutons d'action */
#vue-classe-container tbody td:has(.btn-evolution),
#vue-classe-container tbody td:has(.counter-section) {
    min-width: 80px;
    max-width: 100px;
    padding: 0.5rem 0.3rem;
}

/* Lignes alternées avec dégradé subtil */
#vue-classe-container tbody tr:nth-child(even) {
    background: linear-gradient(90deg, 
        var(--bg-hover) 0%, 
        var(--bg-secondary) 50%, 
        var(--bg-hover) 100%);
}

#vue-classe-container tbody tr:nth-child(odd) {
    background: var(--bg-card);
}

/* Effet hover sophistiqué */
#vue-classe-container tbody tr:hover {
    background: linear-gradient(90deg, 
        var(--bg-tertiary) 0%, 
        rgba(139, 92, 246, 0.1) 50%, 
        var(--bg-tertiary) 100%) !important;
    transform: scale(1.01);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    z-index: 5;
    position: relative;
}

/* Colonnes de notes avec style spécial */
#vue-classe-container tbody td:has(.note-cell),
#vue-classe-container tbody td.note-column {
    background: linear-gradient(135deg, 
        rgba(34, 197, 94, 0.05) 0%, 
        rgba(59, 130, 246, 0.05) 100%);
    border-left: 2px solid var(--success);
    border-right: 2px solid var(--info);
}

/* Moyennes en gras avec couleur */
#vue-classe-container tbody td.moyenne-cell {
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 8px;
    margin: 0.2rem;
    padding: 0.6rem 0.8rem !important;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

#vue-classe-container tbody td.moyenne-cell:hover {
    transform: scale(1.05);
    z-index: 10;
}

/* Classes spécifiques pour les moyennes */
#vue-classe-container tbody td.moyenne-cell.moyenne-excellent {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
    color: white;
    border: 2px solid #059669;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

#vue-classe-container tbody td.moyenne-cell.moyenne-tres-bien {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%) !important;
    color: white;
    border: 2px solid #2563eb;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

#vue-classe-container tbody td.moyenne-cell.moyenne-bien {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%) !important;
    color: white;
    border: 2px solid #7c3aed;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

#vue-classe-container tbody td.moyenne-cell.moyenne-moyen {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%) !important;
    color: white;
    border: 2px solid #d97706;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

#vue-classe-container tbody td.moyenne-cell.moyenne-faible {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
    color: white;
    border: 2px solid #dc2626;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

#vue-classe-container tbody td.moyenne-cell.moyenne-missing {
    background: linear-gradient(135deg, 
        rgba(156, 163, 175, 0.3) 0%, 
        rgba(107, 114, 128, 0.3) 100%) !important;
    color: var(--text-secondary);
    border: 2px dashed var(--border-color);
    font-style: italic;
}

/* Notes individuelles stylisées */
#vue-classe-container .note-value {
    display: inline-block;
    padding: 0.2rem 0.4rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.8rem;
    min-width: 35px;
    max-width: none;
    text-align: center;
    margin: 0.1rem;
    transition: all 0.3s ease;
    white-space: nowrap;
    color: white;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

/* Codage couleur des notes */
#vue-classe-container .note-value.note-excellent {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

#vue-classe-container .note-value.note-tres-bien {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

#vue-classe-container .note-value.note-bien {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

#vue-classe-container .note-value.note-moyen {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

#vue-classe-container .note-value.note-faible {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

#vue-classe-container .note-value.note-absent {
    background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
    color: white;
    font-style: italic;
}

/* Note manquante */
#vue-classe-container .note-value.note-missing {
    background: rgba(71, 85, 105, 0.5);
    color: #94a3b8;
    border: 2px dashed #64748b;
    font-style: italic;
}

#vue-classe-container .note-value:hover {
    transform: scale(1.1);
    z-index: 10;
    position: relative;
}

/* Headers avec icônes */
#vue-classe-container th.header-nom::before {
    content: '👤 ';
    margin-right: 0.5rem;
}

#vue-classe-container th.header-notes::before {
    content: '📝 ';
    margin-right: 0.5rem;
}

#vue-classe-container th.header-moyenne::before {
    content: '📊 ';
    margin-right: 0.5rem;
}

#vue-classe-container th.header-evolution::before {
    content: '📈 ';
    margin-right: 0.5rem;
}

#vue-classe-container th.header-tnf::before {
    content: '⚠️ ';
    margin-right: 0.5rem;
}

#vue-classe-container th.header-avert::before {
    content: '🚨 ';
    margin-right: 0.5rem;
}

/* === BOUTONS MODERNES TNF ET AVERTISSEMENTS - THÈME SOMBRE === */

/* Container de compteurs avec structure moderne */
#vue-classe-container tbody td .counter-section {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.2rem !important;
    padding: 0.3rem 0.1rem !important;
    flex-wrap: nowrap !important;
    background: var(--bg-secondary) !important;
    border-radius: var(--border-radius) !important;
    border: 1px solid var(--border-color) !important;
    margin: 0.1rem !important;
    min-height: 30px;
    max-width: 100%;
}

/* Badges compteurs modernisés pour thème sombre */
#vue-classe-container tbody .compteur-tnf {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%) !important;
    color: #1f2937 !important;
    border: 2px solid #d97706 !important;
    font-size: 0.7rem !important;
    font-weight: 700 !important;
    padding: 0.2rem 0.4rem !important;
    border-radius: 10px !important;
    min-width: 28px !important;
    height: 22px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 0 0.1rem !important;
    box-shadow: 0 2px 4px rgba(251, 191, 36, 0.3) !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1) !important;
}

#vue-classe-container tbody .compteur-avert {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%) !important;
    color: var(--text-primary) !important;
    border: 2px solid #dc2626 !important;
    font-size: 0.7rem !important;
    font-weight: 700 !important;
    padding: 0.2rem 0.4rem !important;
    border-radius: 10px !important;
    min-width: 28px !important;
    height: 22px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 0 0.1rem !important;
    box-shadow: 0 2px 4px rgba(248, 113, 113, 0.3) !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2) !important;
}

/* Boutons + modernisés avec haute spécificité pour thème sombre */
#vue-classe-container tbody .counter-section .btn-tnf,
#vue-classe-container tbody .counter-section .btn-avert {
    background: linear-gradient(135deg, var(--success) 0%, #16a34a 100%) !important;
    color: var(--text-primary) !important;
    border: 2px solid var(--success) !important;
    border-radius: 50% !important;
    width: 24px !important;
    height: 24px !important;
    font-size: 0.7rem !important;
    font-weight: 800 !important;
    cursor: pointer !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 0 0.05rem !important;
    padding: 0 !important;
    box-shadow: 0 2px 6px rgba(34, 197, 94, 0.4) !important;
    position: relative !important;
    overflow: hidden !important;
}

#vue-classe-container tbody .counter-section .btn-tnf::before,
#vue-classe-container tbody .counter-section .btn-avert::before {
    content: '+';
    font-size: 0.9rem;
    font-weight: 900;
    line-height: 1;
}

#vue-classe-container tbody .counter-section .btn-tnf:hover,
#vue-classe-container tbody .counter-section .btn-avert:hover {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%) !important;
    transform: scale(1.15) rotate(90deg) !important;
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.6) !important;
    border-color: #15803d !important;
}

#vue-classe-container tbody .counter-section .btn-tnf:active,
#vue-classe-container tbody .counter-section .btn-avert:active {
    transform: scale(1.05) rotate(90deg) !important;
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.5) !important;
}

/* Boutons - modernisés avec haute spécificité pour thème sombre */
#vue-classe-container tbody .counter-section .btn-tnf-moins,
#vue-classe-container tbody .counter-section .btn-avert-moins {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%) !important;
    color: var(--text-primary) !important;
    border: 2px solid var(--danger) !important;
    border-radius: 50% !important;
    width: 24px !important;
    height: 24px !important;
    font-size: 0.7rem !important;
    font-weight: 800 !important;
    cursor: pointer !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 0 0.05rem !important;
    padding: 0 !important;
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.4) !important;
    position: relative !important;
    overflow: hidden !important;
}

#vue-classe-container tbody .counter-section .btn-tnf-moins::before,
#vue-classe-container tbody .counter-section .btn-avert-moins::before {
    content: '−';
    font-size: 1rem;
    font-weight: 900;
    line-height: 1;
}

#vue-classe-container tbody .counter-section .btn-tnf-moins:hover,
#vue-classe-container tbody .counter-section .btn-avert-moins:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%) !important;
    transform: scale(1.15) rotate(-90deg) !important;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.6) !important;
    border-color: #b91c1c !important;
}

#vue-classe-container tbody .counter-section .btn-tnf-moins:active,
#vue-classe-container tbody .counter-section .btn-avert-moins:active {
    transform: scale(1.05) rotate(-90deg) !important;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.5) !important;
}

/* Effet de pulsation pour les boutons au focus */
#vue-classe-container tbody .counter-section .btn-tnf:focus,
#vue-classe-container tbody .counter-section .btn-avert:focus,
#vue-classe-container tbody .counter-section .btn-tnf-moins:focus,
#vue-classe-container tbody .counter-section .btn-avert-moins:focus {
    outline: none !important;
    animation: pulse-button 0.6s ease-in-out !important;
}

@keyframes pulse-button {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* Effet de clic visuel */
#vue-classe-container tbody .counter-section .btn-tnf:active::after,
#vue-classe-container tbody .counter-section .btn-avert:active::after,
#vue-classe-container tbody .counter-section .btn-tnf-moins:active::after,
#vue-classe-container tbody .counter-section .btn-avert-moins:active::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: translate(-50%, -50%);
    animation: click-ripple 0.3s ease-out;
}

@keyframes click-ripple {
    0% {
        width: 0;
        height: 0;
    }
    100% {
        width: 100%;
        height: 100%;
    }
}

/* === BOUTONS D'ÉVOLUTION MODERNES POUR THÈME SOMBRE === */

/* Bouton évolution dans les cellules */
#vue-classe-container tbody .btn-evolution {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #7c3aed 100%) !important;
    color: var(--text-primary) !important;
    border: 2px solid var(--secondary-color) !important;
    padding: 0.4rem 0.6rem !important;
    border-radius: 6px !important;
    font-size: 0.7rem !important;
    font-weight: 700 !important;
    cursor: pointer !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    box-shadow: 0 3px 10px rgba(139, 92, 246, 0.3) !important;
    text-transform: uppercase !important;
    letter-spacing: 0.3px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.2rem !important;
    min-width: 60px !important;
    max-width: 80px !important;
    position: relative !important;
    overflow: hidden !important;
    white-space: nowrap !important;
}

#vue-classe-container tbody .btn-evolution::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

#vue-classe-container tbody .btn-evolution:hover::before {
    left: 100%;
}

#vue-classe-container tbody .btn-evolution:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%) !important;
    transform: translateY(-3px) scale(1.05) !important;
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5) !important;
    border-color: #6d28d9 !important;
}

#vue-classe-container tbody .btn-evolution:active {
    transform: translateY(-1px) scale(1.02) !important;
    box-shadow: 0 3px 10px rgba(139, 92, 246, 0.4) !important;
}

/* Container pour grouper les actions si nécessaire */
#vue-classe-container tbody .action-buttons-group {
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 0.5rem !important;
    padding: 0.3rem 0 !important;
    background: var(--bg-secondary) !important;
    border-radius: var(--border-radius) !important;
    margin: 0.2rem !important;
}

/* === SÉLECTEURS ET CONTRÔLES DU TABLEAU DE BORD === */

/* Sélecteur de classe et trimestre */
#section-vue-classe select {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.8rem 1.2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    margin: 0 1rem 1rem 0;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

#section-vue-classe select:hover {
    border-color: var(--primary-color);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.2);
    transform: translateY(-2px);
}

#section-vue-classe select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

/* Labels des sélecteurs */
#section-vue-classe label {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1rem;
    margin-right: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* === STATISTIQUES ET RÉSUMÉS === */

/* Container pour les statistiques globales */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.stat-card {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* === RESPONSIVE POUR TABLEAU DE BORD === */

@media (max-width: 1200px) {
    #vue-classe-container {
        padding: 0.75rem;
    }
    
    #vue-classe-container th,
    #vue-classe-container td {
        padding: 0.75rem 0.5rem;
        font-size: 0.85rem;
    }
    
    #vue-classe-container .note-value {
        padding: 0.25rem 0.5rem;
        font-size: 0.8rem;
        min-width: 35px;
    }
}

@media (max-width: 768px) {
    #vue-classe-container {
        padding: 0.5rem;
        margin: 1rem 0;
    }
    
    #vue-classe-container table {
        font-size: 0.8rem;
    }
    
    #vue-classe-container th,
    #vue-classe-container td {
        padding: 0.6rem 0.4rem;
    }
    
    #vue-classe-container th:first-child,
    #vue-classe-container td:first-child {
        padding-left: 0.8rem;
    }
    
    #vue-classe-container .note-value {
        padding: 0.2rem 0.4rem;
        font-size: 0.75rem;
        min-width: 30px;
    }
    
    #vue-classe-container tbody .btn-evolution {
        padding: 0.4rem 0.6rem !important;
        font-size: 0.7rem !important;
        min-width: 60px !important;
    }
    
    .dashboard-stats {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 0.75rem;
        padding: 0.75rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    #vue-classe-container {
        padding: 0.25rem;
    }
    
    #vue-classe-container table {
        font-size: 0.75rem;
    }
    
    #vue-classe-container th,
    #vue-classe-container td {
        padding: 0.4rem 0.3rem;
    }
    
    #vue-classe-container tbody tr:hover {
        transform: none;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding: 0.5rem;
    }
}

/* === COMPTEURS ANNUELS POUR THÈME SOMBRE === */
#vue-classe-container tbody .annual-counter {
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    padding: 0.3rem 0 !important;
    background: var(--bg-secondary) !important;
    border-radius: var(--border-radius) !important;
    margin: 0.2rem !important;
}

#vue-classe-container tbody .annual-counter .compteur-tnf,
#vue-classe-container tbody .annual-counter .compteur-avert {
    background: linear-gradient(135deg, var(--info) 0%, #0ea5e9 100%) !important;
    color: var(--text-primary) !important;
    border: 2px solid var(--info) !important;
    font-size: 0.8rem !important;
    font-weight: 700 !important;
    padding: 0.4rem 0.8rem !important;
    border-radius: 16px !important;
    min-width: 40px !important;
    height: auto !important;
    box-shadow: 0 2px 4px rgba(6, 182, 212, 0.3) !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2) !important;
}

/* === RESPONSIVE DESIGN POUR LES NOUVEAUX BOUTONS === */
@media (max-width: 768px) {
    #vue-classe-container tbody .counter-section {
        flex-direction: column !important;
        gap: 0.3rem !important;
        padding: 0.3rem 0.1rem !important;
    }
    
    #vue-classe-container tbody .compteur-tnf,
    #vue-classe-container tbody .compteur-avert {
        min-width: 28px !important;
        height: 22px !important;
        font-size: 0.7rem !important;
        margin: 0 0.1rem !important;
        padding: 0.2rem 0.4rem !important;
    }
    
    #vue-classe-container tbody .counter-section .btn-tnf,
    #vue-classe-container tbody .counter-section .btn-avert,
    #vue-classe-container tbody .counter-section .btn-tnf-moins,
    #vue-classe-container tbody .counter-section .btn-avert-moins {
        width: 24px !important;
        height: 24px !important;
        font-size: 0.7rem !important;
    }
    
    #vue-classe-container tbody .action-buttons-group .btn-evolution {
        padding: 0.4rem 0.6rem !important;
        font-size: 0.7rem !important;
    }
}

@media (max-width: 480px) {
    #vue-classe-container tbody .counter-section {
        gap: 0.2rem !important;
        padding: 0.2rem 0 !important;
    }
    
    #vue-classe-container tbody .compteur-tnf,
    #vue-classe-container tbody .compteur-avert {
        min-width: 24px !important;
        height: 20px !important;
        font-size: 0.65rem !important;
        padding: 0.1rem 0.3rem !important;
    }
    
    #vue-classe-container tbody .counter-section .btn-tnf,
    #vue-classe-container tbody .counter-section .btn-avert,
    #vue-classe-container tbody .counter-section .btn-tnf-moins,
    #vue-classe-container tbody .counter-section .btn-avert-moins {
        width: 20px !important;
        height: 20px !important;
        font-size: 0.6rem !important;
    }
}

/* --- Plan de classe adapté --- */
#plan-classe-grid {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
}

.plan-cell {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

.plan-cell:hover {
    background: var(--bg-hover);
    border-color: var(--accent-color);
}

.plan-table {
    background: var(--bg-tertiary);
    border: 3px solid var(--primary-color);
    color: var(--text-primary);
}

.plan-board {
    background: var(--bg-tertiary);
    border: 3px solid var(--warning);
    color: var(--text-primary);
}

.plan-eleve {
    background: var(--bg-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .main-container {
        margin-left: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-content {
        padding: 1rem;
    }
    
    section,
    #ajout-devoir,
    #ajout-note,
    #menu-selection,
    #ajout-classe,
    #ajout-eleve,
    #import-notes-section,
    #section-appel {
        padding: 1.5rem;
        margin-bottom: 1rem;
    }
}

/* --- Overlay mobile --- */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 999;
    display: none;
}

/* --- Animations --- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* --- Utilitaires --- */
.text-center { text-align: center; }
.hidden { display: none !important; }
.visible { display: block !important; }

/* Override pour les éléments avec couleurs forcées */
strong, .important {
    color: var(--text-accent) !important;
}

/* Menu utilisateur */
#user-menu {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color) !important;
}

/* Styles pour les nouvelles classes */
.progress-indicator {
    margin-top: 15px; 
    padding: 10px; 
    background: var(--bg-secondary); 
    border: 1px solid var(--border-color); 
    border-radius: var(--border-radius); 
    color: var(--text-primary);
}

.progress-remaining {
    color: var(--danger); 
    font-weight: bold;
}

.progress-total {
    color: var(--text-primary); 
    font-weight: bold;
}

.progress-bar-container {
    width: 100%; 
    background: var(--bg-hover); 
    border-radius: 10px; 
    height: 8px; 
    margin-top: 5px;
}

.progress-bar {
    width: 0%; 
    background: var(--success); 
    height: 100%; 
    border-radius: 10px; 
    transition: width 0.3s;
}

.note-finale {
    margin-top: 8px;
    font-weight: bold;
    color: var(--primary-color);
}

.message-success {
    margin-top: 8px;
    color: var(--success);
    font-weight: bold;
}

/* === PLAN DE CLASSE - THÈME MODERNE COLORÉ === */

#section-plan-classe {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-radius: var(--border-radius-xl);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
    overflow: hidden;
}

#section-plan-classe::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
    animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(20px); }
}

#section-plan-classe h3 {
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    border: none;
    padding: 0;
}

/* Contrôles du plan de classe modernisés */
#section-plan-classe > div:first-of-type {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: 16px;
    border: 2px solid var(--border-color);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    position: relative;
}

#section-plan-classe label {
    color: var(--text-primary);
    font-weight: 700;
    margin-right: 0.8rem;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#section-plan-classe input, #section-plan-classe select {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

#section-plan-classe input:focus, #section-plan-classe select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
    transform: translateY(-1px);
}

/* Boutons du plan de classe avec effets visuels */
#plan-configure {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    position: relative;
    overflow: hidden;
}

#plan-configure::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

#plan-configure:hover::before {
    left: 100%;
}

#plan-save {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

#plan-load {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

#plan-place-board {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%) !important;
    color: white !important;
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4) !important;
    position: relative;
    overflow: hidden;
}

#plan-place-board::after {
    content: '🏫';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2em;
}

#plan-ia {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%) !important;
    color: white !important;
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4) !important;
    position: relative;
    overflow: hidden;
}

#plan-ia::after {
    content: '🤖';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2em;
}

#plan-auto {
    background: linear-gradient(135deg, #00bfae 0%, #00a693 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(0, 191, 174, 0.4);
}

#plan-fullscreen {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    position: relative;
    overflow: hidden;
}

#plan-fullscreen::after {
    content: '🔍';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2em;
}

/* Instructions du plan de classe */
#section-plan-classe > div:nth-of-type(2) {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
    border: 2px solid var(--secondary-color);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    margin-bottom: 2rem;
    text-align: center;
    font-weight: 600;
    color: var(--text-primary);
    position: relative;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.1);
}

#section-plan-classe > div:nth-of-type(2)::before {
    content: '💡';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    padding: 5px 10px;
    border-radius: 50%;
    font-size: 1.5em;
}

/* Grille du plan de classe - Design moderne */
#plan-classe-grid {
    display: grid;
    gap: 12px;
    margin: 2rem auto;
    user-select: none;
    justify-content: center;
    padding: 2.5rem;
    background: linear-gradient(145deg, var(--bg-secondary) 0%, rgba(51, 65, 85, 0.8) 100%);
    border-radius: 24px;
    border: 3px solid transparent;
    background-clip: padding-box;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    max-width: 100%;
    overflow: auto;
    position: relative;
}

#plan-classe-grid::before {
    content: '';
    position: absolute;
    inset: -3px;
    padding: 3px;
    background: linear-gradient(45deg, #667eea, #764ba2, #f093fb, #f5576c);
    border-radius: 24px;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    z-index: -1;
}

/* Cellules de base - Design moderne */
.plan-cell {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border: 3px solid var(--border-color);
    min-width: 70px;
    min-height: 70px;
    border-radius: 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 4px 15px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.plan-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.05) 50%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.plan-cell:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.2),
        0 0 0 3px rgba(102, 126, 234, 0.3);
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--bg-hover) 0%, var(--bg-tertiary) 100%);
}

.plan-cell:hover::before {
    opacity: 1;
}

/* Tables avec élèves - Design coloré */
.plan-table {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: 4px solid transparent;
    color: white;
    font-weight: 800;
    box-shadow: 
        0 8px 25px rgba(102, 126, 234, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: visible;
}

.plan-table::after {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 16px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.plan-table:hover {
    transform: translateY(-10px) scale(1.08);
    box-shadow: 
        0 20px 50px rgba(102, 126, 234, 0.6),
        0 0 0 4px rgba(102, 126, 234, 0.4);
    animation: table-glow 2s ease-in-out infinite alternate;
}

.plan-table:hover::after {
    opacity: 1;
}

@keyframes table-glow {
    0% { box-shadow: 0 20px 50px rgba(102, 126, 234, 0.6), 0 0 0 4px rgba(102, 126, 234, 0.4); }
    100% { box-shadow: 0 25px 60px rgba(118, 75, 162, 0.7), 0 0 0 6px rgba(118, 75, 162, 0.5); }
}

/* Tableau du professeur - Design spécial */
.plan-board {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    border: 4px solid #f59e0b;
    color: white;
    font-weight: 900;
    font-size: 1.1rem;
    min-width: 100px;
    min-height: 50px;
    box-shadow: 
        0 8px 25px rgba(245, 158, 11, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    position: relative;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.plan-board::before {
    content: '👨‍🏫';
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 1.5em;
    background: white;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.plan-board:hover {
    transform: translateY(-12px) scale(1.1);
    box-shadow: 
        0 25px 60px rgba(245, 158, 11, 0.7),
        0 0 0 5px rgba(245, 158, 11, 0.4);
    animation: board-pulse 1.5s ease-in-out infinite;
}

@keyframes board-pulse {
    0%, 100% { transform: translateY(-12px) scale(1.1); }
    50% { transform: translateY(-15px) scale(1.12); }
}

/* Élèves dans les tables - Design moderne */
.plan-eleve {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: white;
    margin: 2px;
    padding: 6px 10px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
    border: 2px solid rgba(255, 255, 255, 0.3);
    line-height: 1.3;
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.plan-eleve:not(:empty) {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.15) 100%);
    border: 2px solid rgba(255, 255, 255, 0.4);
    color: white;
    font-weight: 800;
    position: relative;
}

.plan-eleve:not(:empty):hover {
    transform: scale(1.05);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0.25) 100%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* Places vides (chaises libres) dans les tables */
.plan-eleve.place-vide {
    background: linear-gradient(135deg, rgba(107, 114, 128, 0.3) 0%, rgba(75, 85, 99, 0.3) 100%) !important;
    color: rgba(255, 255, 255, 0.6) !important;
    border: 2px dashed rgba(255, 255, 255, 0.3) !important;
    font-size: 0.8rem !important;
    font-weight: 500 !important;
    font-style: italic !important;
    opacity: 0.8 !important;
}

.plan-eleve.place-vide:hover {
    opacity: 1 !important;
    transform: scale(1.08) !important;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(124, 58, 237, 0.2) 100%) !important;
    border-color: rgba(139, 92, 246, 0.5) !important;
}

/* Cellules vides (espaces libres) - Design amélioré */
.plan-cell.plan-empty {
    min-width: 40px;
    min-height: 40px;
    max-width: 50px;
    max-height: 50px;
    background: linear-gradient(135deg, rgba(107, 114, 128, 0.1) 0%, rgba(75, 85, 99, 0.1) 100%);
    border: 3px dashed var(--border-light);
    opacity: 0.6;
    border-radius: 12px;
    transition: all 0.4s ease;
    position: relative;
}

.plan-cell.plan-empty::before {
    content: '+';
    font-size: 1.5rem;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.plan-cell.plan-empty:hover {
    opacity: 1;
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    transform: scale(1.15);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.2);
}

.plan-cell.plan-empty:hover::before {
    opacity: 1;
    color: var(--primary-color);
}

/* États d'interaction - Effets visuels */
.plan-drop-hover {
    outline: 4px dashed var(--accent-color);
    background: linear-gradient(135deg, rgba(0, 191, 174, 0.2) 0%, rgba(6, 182, 212, 0.2) 100%) !important;
    transform: scale(1.1);
    animation: drop-hover-pulse 1s ease-in-out infinite;
}

@keyframes drop-hover-pulse {
    0%, 100% { 
        outline-color: var(--accent-color);
        box-shadow: 0 0 0 8px rgba(0, 191, 174, 0.2);
    }
    50% { 
        outline-color: var(--success);
        box-shadow: 0 0 0 12px rgba(34, 197, 94, 0.2);
    }
}

.plan-table.dragging {
    opacity: 0.7;
    transform: rotate(3deg) scale(0.95);
    z-index: 1000;
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.4),
        0 0 0 4px rgba(102, 126, 234, 0.6);
    filter: blur(1px);
}

/* Modal plan de classe plein écran - Design moderne */
.modal-plan-fullscreen {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.95) 100%);
    backdrop-filter: blur(10px);
    z-index: 9999;
    overflow: hidden;
    animation: modal-fade-in 0.4s ease-out;
}

@keyframes modal-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-plan-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(30, 41, 59, 0.8) 100%);
}

.modal-plan-header {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, rgba(51, 65, 85, 0.9) 100%);
    color: var(--text-primary);
    padding: 2rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    z-index: 10001;
    flex-shrink: 0;
    border-bottom: 4px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.modal-plan-header::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
    animation: gradient-shift 3s ease-in-out infinite;
}

.modal-plan-header h2 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-plan-controls {
    display: flex;
    gap: 1.5rem;
}

.modal-plan-controls button {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-input) 100%);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.modal-plan-controls button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.modal-plan-controls button:hover::before {
    left: 100%;
}

.modal-plan-controls button:hover {
    background: linear-gradient(135deg, var(--bg-hover) 0%, var(--bg-tertiary) 100%);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
}

#plan-fullscreen-close {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
    color: white !important;
    border-color: #dc2626 !important;
}

#plan-fullscreen-close:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%) !important;
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.3) !important;
}

.modal-plan-body {
    flex: 1;
    padding: 2.5rem;
    overflow: auto;
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(15, 23, 42, 0.8) 100%);
}

#plan-classe-grid-fullscreen {
    display: grid;
    gap: 16px;
    margin: 0 auto;
    user-select: none;
    justify-content: center;
    background: linear-gradient(145deg, var(--bg-secondary) 0%, rgba(51, 65, 85, 0.8) 100%);
    border-radius: 24px;
    padding: 3rem;
    border: 3px solid transparent;
    background-clip: padding-box;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
}

#plan-classe-grid-fullscreen::before {
    content: '';
    position: absolute;
    inset: -3px;
    padding: 3px;
    background: linear-gradient(45deg, #667eea, #764ba2, #f093fb, #f5576c);
    border-radius: 24px;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    z-index: -1;
}

#plan-classe-grid-fullscreen .plan-cell {
    min-width: 90px;
    min-height: 90px;
    font-size: 1.1rem;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    border: 3px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 
        0 6px 20px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

#plan-classe-grid-fullscreen .plan-cell:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.25),
        0 0 0 3px rgba(102, 126, 234, 0.3);
}

#plan-classe-grid-fullscreen .plan-table {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: 4px solid transparent;
    color: white;
    font-weight: 800;
    box-shadow: 
        0 10px 30px rgba(102, 126, 234, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

#plan-classe-grid-fullscreen .plan-table:hover {
    transform: translateY(-10px) scale(1.08);
    box-shadow: 
        0 20px 50px rgba(102, 126, 234, 0.7),
        0 0 0 4px rgba(102, 126, 234, 0.4);
}

#plan-classe-grid-fullscreen .plan-board {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    border: 4px solid #f59e0b;
    color: white;
    font-weight: 900;
    font-size: 1.3rem;
    box-shadow: 
        0 10px 30px rgba(245, 158, 11, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

#plan-classe-grid-fullscreen .plan-board:hover {
    transform: translateY(-12px) scale(1.1);
    box-shadow: 
        0 25px 60px rgba(245, 158, 11, 0.8),
        0 0 0 5px rgba(245, 158, 11, 0.4);
}

#plan-classe-grid-fullscreen .plan-eleve {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.15) 100%);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.4);
    font-size: 0.95rem;
    font-weight: 700;
    padding: 8px 12px;
    border-radius: 12px;
    backdrop-filter: blur(5px);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Responsive pour modal fullscreen */
@media (max-width: 768px) {
    .modal-plan-header {
        padding: 1.5rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .modal-plan-controls {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
    }
    
    .modal-plan-body {
        padding: 1.5rem;
    }
    
    #plan-classe-grid-fullscreen {
        padding: 1.5rem;
        gap: 12px;
    }
    
    #plan-classe-grid-fullscreen .plan-cell {
        min-width: 70px;
        min-height: 70px;
        font-size: 0.9rem;
    }
}

/* === GRAPHIQUES - AMÉLIORATION CONTRASTE === */

/* Conteneur des graphiques */
#graphiques-notes {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: 24px;
    margin-top: 2em;
    margin-bottom: 2em;
    width: 100%;
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

#graphiques-notes canvas {
    background: var(--bg-card) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--border-radius) !important;
    box-shadow: var(--shadow) !important;
    padding: 1rem !important;
}

/* ===== MODALS ÉLÈVES - MODE NOUVELLE FENÊTRE ===== */

/* Force tous les modals à être cachés par défaut */
#modal-evolution-eleve:not(.show):not([style*="display: block"]),
#rapport-eleve-modal-bg:not(.show):not([style*="display: flex"]),
#modal-plan-fullscreen:not(.show):not([style*="display: block"]),
#image-modal-bg:not(.show):not([style*="display: block"]),
#plan-table-modal-bg:not(.show):not([style*="display: flex"]),
#modal-appreciation:not(.show):not([style*="display: block"]):not([style*="display: flex"]) {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

/* Activation de la modale plan de classe */
#plan-table-modal-bg.show,
#plan-table-modal-bg[style*="display: flex"] {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: all !important;
    background: rgba(15, 23, 42, 0.85) !important;
    backdrop-filter: blur(8px) !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
}

/* Contenu de la modale plan de classe */
#plan-table-modal {
    background: var(--bg-card) !important;
    border-radius: 20px !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 
                0 0 0 1px rgba(255, 255, 255, 0.1) !important;
    padding: 2rem 2.5rem !important;
    min-width: 380px !important;
    max-width: 90vw !important;
    border: 2px solid var(--border-subtle) !important;
    transform: scale(0.95) !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
}

#plan-table-modal-bg.show #plan-table-modal {
    transform: scale(1) !important;
}

/* Titre de la modale */
#plan-table-modal-title {
    color: var(--primary) !important;
    font-size: 1.4em !important;
    font-weight: 700 !important;
    margin-bottom: 1.5rem !important;
    text-align: center !important;
    background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
}

/* Bouton fermer */
#plan-table-modal-close {
    position: absolute !important;
    top: 16px !important;
    right: 20px !important;
    background: rgba(255, 255, 255, 0.08) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 10px !important;
    width: 36px !important;
    height: 36px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.2em !important;
    color: var(--text-secondary) !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
}

#plan-table-modal-close:hover {
    background: rgba(231, 76, 60, 0.15) !important;
    color: #e74c3c !important;
    border-color: rgba(231, 76, 60, 0.3) !important;
    transform: rotate(90deg) !important;
}

/* Labels et inputs */
#plan-table-modal label {
    color: var(--text-primary) !important;
    font-weight: 600 !important;
    font-size: 0.95em !important;
    margin-bottom: 0.5rem !important;
}

#plan-table-size {
    background: var(--bg-secondary) !important;
    border: 2px solid var(--border-color) !important;
    border-radius: 10px !important;
    padding: 0.6rem 1rem !important;
    color: var(--text-primary) !important;
    font-size: 1em !important;
    text-align: center !important;
    transition: all 0.2s ease !important;
    width: 80px !important;
    margin: 0.5rem 0 1rem 0 !important;
}

#plan-table-size:focus {
    outline: none !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15) !important;
}

/* Zone des places */
#plan-table-places {
    background: var(--bg-secondary) !important;
    border-radius: 12px !important;
    padding: 1.2rem !important;
    margin: 1rem 0 !important;
    border: 1px solid var(--border-color) !important;
}

#plan-table-places label {
    color: var(--text-secondary) !important;
    font-weight: 500 !important;
    font-size: 0.9em !important;
    margin-right: 0.8rem !important;
    min-width: 70px !important;
    display: inline-block !important;
}

#plan-table-places select {
    background: var(--bg-card) !important;
    border: 1.5px solid var(--border-color) !important;
    border-radius: 8px !important;
    padding: 0.5rem 0.8rem !important;
    color: var(--text-primary) !important;
    font-size: 0.9em !important;
    width: 200px !important;
    margin-bottom: 0.8rem !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
}

#plan-table-places select:hover {
    border-color: var(--primary-light) !important;
}

#plan-table-places select:focus {
    outline: none !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1) !important;
}

/* Boutons d'action */
#plan-table-modal-save,
#plan-table-modal-delete {
    padding: 0.7rem 1.5rem !important;
    border-radius: 10px !important;
    font-weight: 600 !important;
    font-size: 0.95em !important;
    cursor: pointer !important;
    border: none !important;
    transition: all 0.2s ease !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
}

#plan-table-modal-save {
    background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
    color: white !important;
}

#plan-table-modal-save:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4) !important;
}

#plan-table-modal-delete {
    background: linear-gradient(135deg, #e74c3c, #c0392b) !important;
    color: white !important;
    margin-left: 1rem !important;
}

#plan-table-modal-delete:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4) !important;
}

/* Modal d'évolution élève - Mode nouvelle fenêtre */
#modal-evolution-eleve {
    position: fixed !important;
    z-index: 999999 !important;
    left: 0 !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(15, 23, 42, 0.95) !important;
    backdrop-filter: blur(12px) !important;
    display: none !important;
    align-items: center !important;
    justify-content: center !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    pointer-events: none !important;
}

/* Activation du modal avec animations */
#modal-evolution-eleve[style*="display: block"] {
    display: flex !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: all !important;
}

/* État visible du modal */
#modal-evolution-eleve.show {
    display: flex !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: all !important;
}

/* Background cliquable pour fermer */
#modal-evolution-eleve-bg {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: transparent !important;
    cursor: pointer !important;
    z-index: 1 !important;
}

/* Contenu du modal - Mode nouvelle fenêtre */
#modal-evolution-eleve-content {
    position: relative !important;
    background: var(--bg-card) !important;
    border-radius: 24px !important;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1) !important;
    padding: 2.5rem !important;
    min-width: 400px !important;
    max-width: 85vw !important;
    width: 750px !important;
    max-height: 85vh !important;
    z-index: 10 !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    overflow: auto !important;
    border: 2px solid var(--border-subtle) !important;
    transform: scale(0.8) translateY(30px) !important;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    opacity: 0 !important;
}

/* Animation d'apparition du contenu */
#modal-evolution-eleve[style*="display: block"] #modal-evolution-eleve-content,
#modal-evolution-eleve.show #modal-evolution-eleve-content {
    transform: scale(1) translateY(0) !important;
    opacity: 1 !important;
}

#modal-evolution-eleve-content canvas {
    width: 100% !important;
    max-width: 600px !important;
    min-width: 320px;
    height: 350px !important;
    background: var(--bg-secondary) !important;
    border-radius: 12px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
    padding: 1.2em !important;
    margin-bottom: 1.5em;
    display: block;
    border: 1px solid var(--border-color) !important;
}

/* Bouton de fermeture - Mode nouvelle fenêtre */
#close-evolution-eleve {
    position: absolute !important;
    top: 20px !important;
    right: 20px !important;
    background: rgba(15, 23, 42, 0.8) !important;
    border: none !important;
    width: 42px !important;
    height: 42px !important;
    border-radius: 50% !important;
    font-size: 1.6em !important;
    color: white !important;
    cursor: pointer !important;
    z-index: 100 !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    border: 2px solid rgba(255, 255, 255, 0.2) !important;
    backdrop-filter: blur(8px) !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3) !important;
}

#close-evolution-eleve:hover {
    background: var(--danger) !important;
    color: white !important;
    transform: scale(1.15) rotate(90deg) !important;
    border-color: var(--danger) !important;
    box-shadow: 0 6px 20px rgba(244, 67, 54, 0.4) !important;
}

#evolution-eleve-alert {
    margin-top: 1em;
    margin-bottom: 1em;
    font-size: 1.1em;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.2em 1.5em;
    text-align: left;
    max-width: 600px;
    max-height: 200px;
    overflow-y: auto;
    word-break: break-word;
    box-sizing: border-box;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Modal de rapport d'élève - Design Premium Moderne */
#rapport-eleve-modal-bg {
    position: fixed !important;
    z-index: 999998 !important;
    left: 0 !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.88)) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    display: none !important;
    align-items: center !important;
    justify-content: center !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    pointer-events: none !important;
    padding: 20px !important;
}

/* Activation du modal rapport avec animations */
#rapport-eleve-modal-bg[style*="display: flex"] {
    display: flex !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: all !important;
    animation: modalBgFadeIn 0.5s cubic-bezier(0.165, 0.84, 0.44, 1) forwards !important;
}

/* Contenu du modal rapport - Design Premium */
#rapport-eleve-modal {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95)) !important;
    border-radius: 28px !important;
    box-shadow: 
        0 35px 70px rgba(102, 126, 234, 0.15),
        0 20px 50px rgba(0, 0, 0, 0.12),
        0 2px 0 rgba(255, 255, 255, 0.5) inset,
        0 0 0 2px rgba(102, 126, 234, 0.1) !important;
    padding: 3rem 2.8rem 2.5rem 2.8rem !important;
    min-width: 500px !important;
    max-width: 90vw !important;
    width: 900px !important;
    max-height: 88vh !important;
    overflow: auto !important;
    position: relative !important;
    transform: scale(0.75) translateY(50px) !important;
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    opacity: 0 !important;
    z-index: 10 !important;
}

#rapport-eleve-modal::before {
    content: '' !important;
    position: absolute !important;
    top: -2px !important;
    left: -2px !important;
    right: -2px !important;
    bottom: -2px !important;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.6) 0%, 
        rgba(118, 75, 162, 0.5) 30%,
        rgba(64, 224, 208, 0.4) 60%,
        rgba(102, 126, 234, 0.6) 100%) !important;
    border-radius: 30px !important;
    z-index: -1 !important;
    animation: borderGlow 4s ease-in-out infinite alternate !important;
}

/* Animation d'apparition du contenu rapport */
#rapport-eleve-modal-bg[style*="display: flex"] #rapport-eleve-modal {
    transform: scale(1) translateY(0) !important;
    opacity: 1 !important;
}

/* Bouton de fermeture modal rapport - Design Premium */
#rapport-eleve-modal-close {
    position: absolute !important;
    top: 25px !important;
    right: 25px !important;
    background: linear-gradient(135deg, rgba(244, 67, 54, 0.1), rgba(244, 67, 54, 0.15)) !important;
    border: 2px solid rgba(244, 67, 54, 0.25) !important;
    width: 44px !important;
    height: 44px !important;
    border-radius: 50% !important;
    font-size: 1.4em !important;
    color: #f44336 !important;
    cursor: pointer !important;
    z-index: 100 !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    backdrop-filter: blur(15px) !important;
    -webkit-backdrop-filter: blur(15px) !important;
    box-shadow: 0 6px 20px rgba(244, 67, 54, 0.2) !important;
    font-weight: bold !important;
}

#rapport-eleve-modal-close:hover {
    background: linear-gradient(135deg, rgba(244, 67, 54, 0.25), rgba(244, 67, 54, 0.35)) !important;
    border-color: rgba(244, 67, 54, 0.5) !important;
    color: #d32f2f !important;
    transform: scale(1.2) rotate(90deg) !important;
    box-shadow: 0 8px 25px rgba(244, 67, 54, 0.4) !important;
    border-color: var(--danger) !important;
    box-shadow: 0 6px 20px rgba(244, 67, 54, 0.4) !important;
}

#rapport-eleve-content {
    color: var(--text-primary);
    padding-right: 1rem;
}

#rapport-eleve-content h2 {
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    border-bottom: 2px solid var(--primary);
    padding-bottom: 0.5rem;
}

#rapport-eleve-content h3 {
    color: var(--text-accent);
    margin: 1.5rem 0 1rem 0;
    font-size: 1.4rem;
}

#rapport-eleve-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

#rapport-eleve-content th,
#rapport-eleve-content td {
    padding: 0.8rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

#rapport-eleve-content th {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

#rapport-eleve-content tr:hover {
    background: var(--bg-hover);
}

#rapport-eleve-print {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
    color: white !important;
    border: none !important;
    padding: 12px 24px !important;
    border-radius: 8px !important;
    font-size: 1rem !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    margin-top: 1.5em !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 8px !important;
}

#rapport-eleve-print:before {
    content: "🖨️";
    font-size: 1.1em;
}

#rapport-eleve-print:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2) !important;
}

/* Modal d'appréciation - Mode nouvelle fenêtre */
#modal-appreciation {
    position: fixed !important;
    z-index: 999997 !important;
    left: 0 !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(15, 23, 42, 0.95) !important;
    backdrop-filter: blur(12px) !important;
    display: none !important;
    align-items: center !important;
    justify-content: center !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    pointer-events: none !important;
}

/* Activation du modal appréciation */
#modal-appreciation[style*="display: block"],
#modal-appreciation[style*="display: flex"],
#modal-appreciation.show {
    display: flex !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: all !important;
}

/* Contenu du modal appréciation */
.modal-appreciation-content {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(250, 250, 255, 0.9)) !important;
    backdrop-filter: blur(20px) !important;
    border-radius: 24px !important;
    box-shadow: 
        0 32px 64px rgba(0, 0, 0, 0.15),
        0 16px 32px rgba(102, 126, 234, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.9) !important;
    padding: 2.5rem !important;
    min-width: 500px !important;
    max-width: 90vw !important;
    width: 950px !important;
    max-height: 90vh !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    position: relative !important;
    transform: scale(0.85) translateY(50px) rotate(1deg) !important;
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    opacity: 0 !important;
    z-index: 10 !important;
    border: 1px solid rgba(102, 126, 234, 0.2) !important;
}

.modal-appreciation-content::before {
    content: '' !important;
    position: absolute !important;
    top: -2px !important;
    left: -2px !important;
    right: -2px !important;
    bottom: -2px !important;
    background: linear-gradient(45deg, #667eea, #764ba2, #667eea) !important;
    background-size: 300% 300% !important;
    border-radius: 26px !important;
    z-index: -1 !important;
    animation: borderGlow 4s ease-in-out infinite !important;
    opacity: 0.6 !important;
}

@keyframes borderGlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Scrollbar personnalisée pour le modal */
.modal-appreciation-content::-webkit-scrollbar {
    width: 8px !important;
}

.modal-appreciation-content::-webkit-scrollbar-track {
    background: rgba(102, 126, 234, 0.1) !important;
    border-radius: 10px !important;
}

.modal-appreciation-content::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
    border-radius: 10px !important;
    transition: all 0.3s ease !important;
}

.modal-appreciation-content::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--secondary), var(--primary)) !important;
    transform: scale(1.1) !important;
}

/* Animation d'apparition du contenu appréciation */
#modal-appreciation[style*="display: block"] .modal-appreciation-content,
#modal-appreciation[style*="display: flex"] .modal-appreciation-content,
#modal-appreciation.show .modal-appreciation-content {
    transform: scale(1) translateY(0) rotate(0deg) !important;
    opacity: 1 !important;
    animation: modalAppreciationEnter 0.6s cubic-bezier(0.165, 0.84, 0.44, 1) forwards !important;
}

@keyframes modalAppreciationEnter {
    0% {
        transform: scale(0.85) translateY(50px) rotate(1deg) !important;
        opacity: 0 !important;
        filter: blur(4px) !important;
    }
    60% {
        transform: scale(1.02) translateY(-5px) rotate(-0.5deg) !important;
        opacity: 0.9 !important;
        filter: blur(1px) !important;
    }
    100% {
        transform: scale(1) translateY(0) rotate(0deg) !important;
        opacity: 1 !important;
        filter: blur(0px) !important;
    }
}

/* Effet de particules pour le background */
#modal-appreciation::before {
    content: '' !important;
    position: absolute !important;
    width: 100% !important;
    height: 100% !important;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(102, 126, 234, 0.3) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(118, 75, 162, 0.3) 1px, transparent 1px),
        radial-gradient(circle at 15% 85%, rgba(67, 233, 123, 0.2) 1px, transparent 1px),
        radial-gradient(circle at 85% 15%, rgba(79, 172, 254, 0.2) 1px, transparent 1px) !important;
    background-size: 80px 80px, 120px 120px, 100px 100px, 90px 90px !important;
    animation: particleFloat 20s linear infinite !important;
    z-index: -1 !important;
    opacity: 0.4 !important;
}

@keyframes particleFloat {
    0% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-10px) rotate(120deg); }
    66% { transform: translateY(5px) rotate(240deg); }
    100% { transform: translateY(0px) rotate(360deg); }
}

/* Header du modal appréciation */
.modal-appreciation-header {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    margin-bottom: 2.5rem !important;
    padding: 1.5rem 2rem !important;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1)) !important;
    border-radius: 16px 16px 0 0 !important;
    position: relative !important;
    margin: -2.5rem -2.5rem 2.5rem -2.5rem !important;
    border-bottom: 1px solid rgba(102, 126, 234, 0.2) !important;
}

.modal-appreciation-header::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 4px !important;
    background: linear-gradient(90deg, #667eea, #764ba2, #667eea) !important;
    background-size: 200% 100% !important;
    animation: gradientShift 3s ease-in-out infinite !important;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.modal-appreciation-header h2 {
    background: linear-gradient(135deg, #667eea, #764ba2) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    font-size: 2rem !important;
    margin: 0 !important;
    font-weight: 700 !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
    position: relative !important;
    /* Fallback pour les navigateurs qui ne supportent pas background-clip */
    color: #667eea !important;
}

/* Support fallback pour les navigateurs sans background-clip */
@supports not (-webkit-background-clip: text) {
    .modal-appreciation-header h2 {
        background: none !important;
        -webkit-text-fill-color: initial !important;
        color: #667eea !important;
        text-shadow: 0 1px 3px rgba(102, 126, 234, 0.3) !important;
    }
}

/* Assurer la lisibilité dans tous les cas */
.modal-appreciation-header h2::before {
    content: attr(data-text) !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    color: rgba(255, 255, 255, 0.8) !important;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5) !important;
    z-index: -1 !important;
    transform: translate(1px, 1px) !important;
    font-weight: 700 !important;
}

/* Bouton de fermeture modal appréciation */
.modal-appreciation .modal-close {
    position: absolute !important;
    top: 20px !important;
    right: 20px !important;
    background: rgba(15, 23, 42, 0.8) !important;
    border: none !important;
    width: 42px !important;
    height: 42px !important;
    border-radius: 50% !important;
    font-size: 1.6em !important;
    color: white !important;
    cursor: pointer !important;
    z-index: 100 !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    border: 2px solid rgba(255, 255, 255, 0.2) !important;
    backdrop-filter: blur(8px) !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3) !important;
}

.modal-appreciation .modal-close:hover {
    background: var(--danger) !important;
    color: white !important;
    transform: scale(1.15) rotate(90deg) !important;
    border-color: var(--danger) !important;
    box-shadow: 0 6px 20px rgba(244, 67, 54, 0.4) !important;
}

/* Body du modal appréciation */
.modal-appreciation-body {
    color: var(--text-primary) !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 2rem !important;
}

.modal-appreciation-body h3 {
    color: var(--text-accent) !important;
    margin: 0 !important;
    font-size: 1.5rem !important;
    font-weight: 600 !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
}

/* Section des statistiques élève */
.eleve-stats {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05)) !important;
    border-radius: 16px !important;
    padding: 2rem !important;
    border: 1px solid rgba(102, 126, 234, 0.1) !important;
    position: relative !important;
    overflow: hidden !important;
}

.eleve-stats::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 4px !important;
    background: linear-gradient(90deg, var(--primary), var(--secondary)) !important;
}

.stats-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)) !important;
    gap: 1.5rem !important;
}

.stat-item {
    display: flex !important;
    flex-direction: column !important;
    gap: 0.5rem !important;
    padding: 1rem !important;
    background: rgba(255, 255, 255, 0.7) !important;
    border-radius: 12px !important;
    border: 1px solid rgba(102, 126, 234, 0.1) !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
}

.stat-item:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.15) !important;
    border-color: rgba(102, 126, 234, 0.3) !important;
}

.stat-label {
    font-size: 0.9rem !important;
    color: var(--text-secondary) !important;
    font-weight: 500 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
}

.stat-value {
    font-size: 1.4rem !important;
    font-weight: 700 !important;
    color: var(--text-primary) !important;
}

.stat-value.stat-good {
    color: var(--success) !important;
}

.stat-value.stat-bad {
    color: var(--danger) !important;
}

.stat-value.stat-warning {
    color: var(--warning) !important;
}

.stat-value.stat-neutral {
    color: var(--info) !important;
}

/* Section éditeur d'appréciation */
.appreciation-editor {
    background: rgba(255, 255, 255, 0.95) !important;
    border-radius: 16px !important;
    padding: 2rem !important;
    border: 1px solid rgba(102, 126, 234, 0.1) !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05) !important;
}

.appreciation-editor label {
    font-size: 1.1rem !important;
    font-weight: 600 !important;
    color: var(--text-primary) !important;
    margin-bottom: 1rem !important;
    display: block !important;
}

/* Textarea du modal appréciation */
#textarea-appreciation-modal {
    width: 100% !important;
    min-height: 200px !important;
    padding: 1.5rem !important;
    border: 2px solid var(--border-color) !important;
    border-radius: 16px !important;
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    font-family: 'Inter', system-ui, -apple-system, sans-serif !important;
    font-size: 1rem !important;
    line-height: 1.6 !important;
    resize: vertical !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05) !important;
}

#textarea-appreciation-modal:focus {
    outline: none !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15), 0 4px 16px rgba(0, 0, 0, 0.1) !important;
    transform: translateY(-1px) !important;
}

#textarea-appreciation-modal::placeholder {
    color: var(--text-muted) !important;
    opacity: 0.7 !important;
}

/* Actions d'appréciation */
.appreciation-actions {
    display: flex !important;
    gap: 1rem !important;
    margin-top: 1.5rem !important;
    flex-wrap: wrap !important;
}

.btn-generer-ia,
.btn-generer-algo,
.btn-sauvegarder {
    padding: 12px 24px !important;
    border: none !important;
    border-radius: 12px !important;
    font-weight: 600 !important;
    font-size: 1rem !important;
    cursor: pointer !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
    text-decoration: none !important;
    position: relative !important;
    overflow: hidden !important;
}

.btn-generer-ia {
    background: linear-gradient(135deg, #667eea, #764ba2) !important;
    color: white !important;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3) !important;
}

.btn-generer-algo {
    background: linear-gradient(135deg, #4facfe, #00f2fe) !important;
    color: white !important;
    box-shadow: 0 4px 16px rgba(79, 172, 254, 0.3) !important;
}

.btn-sauvegarder {
    background: linear-gradient(135deg, #43e97b, #38f9d7) !important;
    color: #2d3748 !important;
    box-shadow: 0 4px 16px rgba(67, 233, 123, 0.3) !important;
    font-weight: 700 !important;
}

.btn-generer-ia:hover,
.btn-generer-algo:hover,
.btn-sauvegarder:hover {
    transform: translateY(-2px) scale(1.02) !important;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.4) !important;
}

.btn-generer-ia::before,
.btn-generer-algo::before,
.btn-sauvegarder::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: -100% !important;
    width: 100% !important;
    height: 100% !important;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent) !important;
    transition: left 0.5s !important;
}

.btn-generer-ia:hover::before,
.btn-generer-algo:hover::before,
.btn-sauvegarder:hover::before {
    left: 100% !important;
}

/* États des boutons */
.btn-generer-ia:active,
.btn-generer-algo:active,
.btn-sauvegarder:active {
    transform: translateY(0px) scale(0.98) !important;
    transition: all 0.1s ease !important;
}

.btn-generer-ia:disabled,
.btn-generer-algo:disabled {
    opacity: 0.6 !important;
    cursor: not-allowed !important;
    transform: none !important;
    position: relative !important;
}

.btn-generer-ia:disabled::after,
.btn-generer-algo:disabled::after {
    content: '' !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    width: 20px !important;
    height: 20px !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
    border-top: 2px solid white !important;
    border-radius: 50% !important;
    animation: spin 1s linear infinite !important;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Effet de focus accessible */
.btn-generer-ia:focus-visible,
.btn-generer-algo:focus-visible,
.btn-sauvegarder:focus-visible {
    outline: 3px solid rgba(102, 126, 234, 0.5) !important;
    outline-offset: 2px !important;
}

/* Animation de succès pour le bouton sauvegarder */
.btn-sauvegarder.success {
    background: linear-gradient(135deg, #10B981, #059669) !important;
    transform: scale(1.05) !important;
}

.btn-sauvegarder.success::after {
    content: '✓' !important;
    position: absolute !important;
    inset: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.2rem !important;
    font-weight: bold !important;
    animation: checkmark 0.6s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
}

@keyframes checkmark {
    0% { 
        opacity: 0;
        transform: scale(0.5) rotate(-45deg);
    }
    50% { 
        opacity: 1;
        transform: scale(1.2) rotate(0deg);
    }
    100% { 
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

/* Styles pour les boutons de bilan dans le tableau */
.eleve-name-cell {
    position: relative !important;
    padding-right: 120px !important;
}

.eleve-actions {
    position: absolute !important;
    top: 50% !important;
    right: 8px !important;
    transform: translateY(-50%) !important;
    display: flex !important;
    gap: 0.5rem !important;
    align-items: center !important;
}

.btn-rapport-eleve.modern-btn {
    background: linear-gradient(135deg, #667eea, #764ba2) !important;
    color: white !important;
    border: none !important;
    border-radius: 8px !important;
    padding: 6px 12px !important;
    font-size: 0.85rem !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 0.4rem !important;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3) !important;
    position: relative !important;
    overflow: hidden !important;
    min-width: 80px !important;
    text-decoration: none !important;
}

.btn-rapport-eleve.modern-btn:hover {
    background: linear-gradient(135deg, #764ba2, #667eea) !important;
    transform: translateY(-2px) scale(1.05) !important;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4) !important;
}

.btn-rapport-eleve.modern-btn:active {
    transform: translateY(0) scale(0.98) !important;
    transition: all 0.1s ease !important;
}

.btn-rapport-eleve.modern-btn .btn-icon {
    font-size: 1rem !important;
    line-height: 1 !important;
}

.btn-rapport-eleve.modern-btn .btn-text {
    font-size: 0.85rem !important;
    font-weight: 600 !important;
}

.btn-rapport-eleve.modern-btn::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: -100% !important;
    width: 100% !important;
    height: 100% !important;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent) !important;
    transition: left 0.5s !important;
}

.btn-rapport-eleve.modern-btn:hover::before {
    left: 100% !important;
}

/* Animations pour le modal rapport-élève */
@keyframes modalBgFadeIn {
    0% {
        opacity: 0 !important;
        backdrop-filter: blur(0px) !important;
    }
    100% {
        opacity: 1 !important;
        backdrop-filter: blur(20px) !important;
    }
}

@keyframes borderGlow {
    0% {
        opacity: 0.6 !important;
        filter: hue-rotate(0deg) !important;
    }
    100% {
        opacity: 0.9 !important;
        filter: hue-rotate(60deg) !important;
    }
}

/* Styles du contenu du rapport élève */
#rapport-eleve-modal h2,
#rapport-eleve-modal h3 {
    background: linear-gradient(135deg, #667eea, #764ba2) !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    font-weight: 700 !important;
    margin-bottom: 1.5rem !important;
    text-align: center !important;
}

#rapport-eleve-modal h2 {
    font-size: 2rem !important;
    margin-bottom: 2rem !important;
}

#rapport-eleve-modal h3 {
    font-size: 1.4rem !important;
    margin-top: 2rem !important;
    margin-bottom: 1rem !important;
}

#rapport-eleve-modal .chart-container {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05)) !important;
    border-radius: 16px !important;
    padding: 1.5rem !important;
    margin: 1.5rem 0 !important;
    border: 1px solid rgba(102, 126, 234, 0.15) !important;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.1) !important;
}

#rapport-eleve-modal canvas {
    border-radius: 12px !important;
}

#rapport-eleve-modal .stats-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)) !important;
    gap: 1rem !important;
    margin: 1.5rem 0 !important;
}

#rapport-eleve-modal .stat-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.8)) !important;
    border: 1px solid rgba(102, 126, 234, 0.15) !important;
    border-radius: 12px !important;
    padding: 1.2rem !important;
    text-align: center !important;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.08) !important;
    transition: all 0.3s ease !important;
}

#rapport-eleve-modal .stat-card:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.15) !important;
}

#rapport-eleve-modal .stat-value {
    font-size: 1.8rem !important;
    font-weight: bold !important;
    color: #667eea !important;
    display: block !important;
}

#rapport-eleve-modal .stat-label {
    font-size: 0.9rem !important;
    color: #64748b !important;
    margin-top: 0.5rem !important;
}

/* Amélioration de l'accessibilité - mode sombre si préféré */
@media (prefers-color-scheme: dark) {
    .modal-appreciation-content {
        background: linear-gradient(145deg, rgba(30, 41, 59, 0.95), rgba(51, 65, 85, 0.9)) !important;
        color: #f1f5f9 !important;
    }
    
    .eleve-stats {
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1)) !important;
    }
    
    .stat-item {
        background: rgba(51, 65, 85, 0.7) !important;
        color: #f1f5f9 !important;
    }
    
    .appreciation-editor {
        background: rgba(51, 65, 85, 0.7) !important;
    }
    
    #textarea-appreciation-modal {
        background: rgba(30, 41, 59, 0.8) !important;
        color: #f1f5f9 !important;
        border-color: rgba(102, 126, 234, 0.3) !important;
    }
    
    /* Mode sombre pour le modal rapport-élève */
    #rapport-eleve-modal {
        background: linear-gradient(145deg, rgba(30, 41, 59, 0.98), rgba(51, 65, 85, 0.95)) !important;
        color: #f1f5f9 !important;
    }
    
    #rapport-eleve-modal .stat-card {
        background: linear-gradient(135deg, rgba(51, 65, 85, 0.9), rgba(71, 85, 105, 0.8)) !important;
        color: #f1f5f9 !important;
    }
    
    #rapport-eleve-modal .stat-label {
        color: #cbd5e1 !important;
    }
}
    
    .modal-appreciation-header h2 {
        background: linear-gradient(135deg, #8b9afc, #9d7bdc) !important;
        -webkit-background-clip: text !important;
        -webkit-text-fill-color: transparent !important;
        background-clip: text !important;
        color: #8b9afc !important;
    }
    
    @supports not (-webkit-background-clip: text) {
        .modal-appreciation-header h2 {
            background: none !important;
            -webkit-text-fill-color: initial !important;
            color: #8b9afc !important;
            text-shadow: 0 1px 3px rgba(139, 154, 252, 0.3) !important;
        }
    }

/* Responsive pour modal appréciation */
@media (max-width: 768px) {
    .modal-appreciation-content {
        width: 95vw !important;
        min-width: 280px !important;
        padding: 2rem !important;
        max-height: 92vh !important;
        border-radius: 20px !important;
        margin: 1rem !important;
    }
    
    .modal-appreciation-header {
        padding: 1rem 1.5rem !important;
        margin: -2rem -2rem 2rem -2rem !important;
        border-radius: 20px 20px 0 0 !important;
    }
    
    .modal-appreciation-header h2 {
        font-size: 1.6rem !important;
    }
    
    .modal-appreciation .modal-close {
        width: 40px !important;
        height: 40px !important;
        top: 15px !important;
        right: 15px !important;
        font-size: 1.4em !important;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)) !important;
        gap: 1rem !important;
    }
    
    .stat-item {
        padding: 0.8rem !important;
    }
    
    .stat-value {
        font-size: 1.2rem !important;
    }
    
    .appreciation-editor {
        padding: 1.5rem !important;
    }
    
    #textarea-appreciation-modal {
        min-height: 180px !important;
        padding: 1rem !important;
    }
    
    .appreciation-actions {
        flex-direction: column !important;
        gap: 0.8rem !important;
    }
    
    .btn-generer-ia,
    .btn-generer-algo,
    .btn-sauvegarder {
        width: 100% !important;
        justify-content: center !important;
        padding: 14px 20px !important;
    }
}

@media (max-width: 480px) {
    .modal-appreciation-content {
        width: 98vw !important;
        margin: 0.5rem !important;
        padding: 1.5rem !important;
        border-radius: 16px !important;
    }
    
    .modal-appreciation-header {
        padding: 1rem !important;
        margin: -1.5rem -1.5rem 1.5rem -1.5rem !important;
        border-radius: 16px 16px 0 0 !important;
    }
    
    .modal-appreciation-header h2 {
        font-size: 1.4rem !important;
    }
    
    .stats-grid {
        grid-template-columns: 1fr !important;
        gap: 0.8rem !important;
    }
    
    .appreciation-editor {
        padding: 1rem !important;
    }
    
    #textarea-appreciation-modal {
        min-height: 160px !important;
        font-size: 0.95rem !important;
    }
}

/* ===== MODE NOUVELLE FENÊTRE - ISOLATION COMPLÈTE ===== */

/* Force l'isolation des modals par-dessus tout le contenu */
#modal-evolution-eleve,
#rapport-eleve-modal-bg {
    isolation: isolate !important;
    contain: layout style paint !important;
}

/* Empêche le scroll du body quand un modal est ouvert */
body:has(#modal-evolution-eleve[style*="display: block"]),
body:has(#modal-evolution-eleve.show),
body:has(#rapport-eleve-modal-bg[style*="display: flex"]),
body:has(#modal-appreciation[style*="display: block"]),
body:has(#modal-appreciation[style*="display: flex"]),
body:has(#modal-appreciation.show) {
    overflow: hidden !important;
    position: fixed !important;
    width: 100% !important;
}

/* Style de fermeture par ESC */
#modal-evolution-eleve:focus,
#rapport-eleve-modal-bg:focus {
    outline: none !important;
}

/* Améliore l'accessibilité avec le focus */
#modal-evolution-eleve-content:focus-within,
#rapport-eleve-modal:focus-within {
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4), 0 0 0 3px var(--primary) !important;
}

/* Animation de pulsation pour attirer l'attention */
@keyframes modalPulse {
    0%, 100% { 
        box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
    }
    50% { 
        box-shadow: 0 30px 100px rgba(0, 0, 0, 0.5), 0 0 0 2px rgba(102, 126, 234, 0.3);
    }
}

/* Animation d'entrée fluide */
@keyframes modalEnter {
    0% {
        opacity: 0;
        transform: scale(0.7) translateY(50px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Applique l'animation d'entrée */
#modal-evolution-eleve[style*="display: block"] #modal-evolution-eleve-content,
#modal-evolution-eleve.show #modal-evolution-eleve-content,
#rapport-eleve-modal-bg[style*="display: flex"] #rapport-eleve-modal {
    animation: modalEnter 0.4s cubic-bezier(0.165, 0.84, 0.44, 1) forwards !important;
}

/* Responsive pour les modals - Mode nouvelle fenêtre */
@media (max-width: 768px) {
    #modal-evolution-eleve-content,
    #rapport-eleve-modal {
        width: 92vw !important;
        min-width: 280px !important;
        padding: 2rem 1.5rem !important;
        max-height: 90vh !important;
        border-radius: 20px !important;
    }
    
    #modal-evolution-eleve-content canvas {
        height: 280px !important;
        padding: 0.8em !important;
    }
    
    #evolution-eleve-alert {
        padding: 1rem !important;
        font-size: 1rem !important;
    }
    
    #rapport-eleve-content h2 {
        font-size: 1.5rem !important;
    }
    
    #rapport-eleve-content h3 {
        font-size: 1.2rem !important;
    }
    
    #rapport-eleve-content th,
    #rapport-eleve-content td {
        padding: 0.6rem 0.8rem !important;
        font-size: 0.9rem !important;
    }
    
    /* Boutons de fermeture plus petits sur mobile */
    #close-evolution-eleve,
    #rapport-eleve-modal-close {
        width: 38px !important;
        height: 38px !important;
        top: 15px !important;
        right: 15px !important;
        font-size: 1.4em !important;
    }
}

@media (max-width: 480px) {
    #modal-evolution-eleve-content,
    #rapport-eleve-modal {
        width: 95vw !important;
        padding: 1.5rem 1rem !important;
        max-height: 92vh !important;
        border-radius: 16px !important;
    }
    
    /* Contenu plus compact sur très petits écrans */
    #modal-evolution-eleve-content canvas {
        height: 240px !important;
        min-width: 250px !important;
    }
}

/* Heatmap et graphiques Plotly */
#vueClasseHeatmap {
    display: block;
    margin: 2em auto 1em auto;
    max-width: 100%;
    min-width: 0;
    min-height: 0;
    background: var(--bg-card) !important;
    border-radius: var(--border-radius) !important;
    box-shadow: var(--shadow) !important;
    border: 1px solid var(--border-color) !important;
    padding: 1rem !important;
}

.js-plotly-plot {
    border-radius: var(--border-radius) !important;
    box-shadow: var(--shadow) !important;
    background: var(--bg-card) !important;
    margin: 0 auto;
    max-width: 100%;
    border: 1px solid var(--border-color) !important;
}

/* Cache le logo Plotly pour un look plus propre */
.js-plotly-plot .modebar {
    display: none !important;
}

/* Conteneur graphique exercices */
#graphique-exercices-container {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-top: 30px;
    border: 1px solid var(--border-color);
}

#coefficients-controls {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

#btn-optimiser-coefficients {
    background: linear-gradient(90deg, var(--info) 0%, var(--primary-color) 100%);
    color: var(--text-primary);
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

#btn-optimiser-coefficients:hover {
    background: linear-gradient(90deg, var(--info-dark) 0%, var(--primary-dark) 100%);
    transform: translateY(-1px);
}

#optimisation-info {
    margin-top: 10px;
    font-size: 0.9em;
    color: var(--text-secondary);
}

#moyenne-generale-affichage {
    margin-top: 15px;
    text-align: center;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--text-primary);
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

/* === RESPONSIVE DESIGN PLAN DE CLASSE === */

@media (max-width: 1200px) {
    #section-plan-classe {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    #plan-classe-grid {
        padding: 1.5rem;
        gap: 6px;
    }
    
    .plan-cell {
        min-width: 50px;
        min-height: 50px;
        font-size: 0.85rem;
    }
    
    .plan-board {
        min-width: 70px;
        min-height: 35px;
    }
}

@media (max-width: 768px) {
    #section-plan-classe {
        padding: 1rem;
        margin: 0.5rem;
    }
    
    #section-plan-classe > div:first-of-type {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    #section-plan-classe button {
        width: 100%;
        padding: 0.8rem;
    }
    
    #plan-classe-grid {
        padding: 1rem;
        gap: 4px;
        overflow-x: auto;
        overflow-y: visible;
        justify-content: flex-start;
    }
    
    .plan-cell {
        min-width: 45px;
        min-height: 45px;
        font-size: 0.8rem;
    }
    
    .plan-eleve {
        font-size: 0.7rem;
    }
    
    .plan-board {
        min-width: 60px;
        min-height: 30px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    #section-plan-classe h3 {
        font-size: 1.4rem;
    }
    
    #plan-classe-grid {
        padding: 0.75rem;
        gap: 3px;
        border-radius: 12px;
    }
    
    .plan-cell {
        min-width: 40px;
        min-height: 40px;
        font-size: 0.75rem;
    }
    
    .plan-eleve {
        font-size: 0.65rem;
        margin: 0.5px 0;
    }
    
    .plan-board {
        min-width: 50px;
        min-height: 25px;
        font-size: 0.8rem;
    }
    
    .plan-cell.plan-empty {
        min-width: 25px;
        min-height: 25px;
        max-width: 30px;
        max-height: 30px;
    }
}

/* === MODE DEVOIR - THÈME SOMBRE === */

#mode-devoir-section {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    position: relative;
}

#btn-quitter-mode-devoir {
    position: relative;
    top: 18px;
    left: 18px;
    margin-bottom: 20px;
    z-index: 10;
    background: linear-gradient(90deg, var(--danger) 60%, #ffb3b3 100%);
    color: var(--text-primary);
    border: 2px solid var(--danger);
    border-radius: var(--border-radius);
    font-weight: bold;
    font-size: 1.08em;
    padding: 10px 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

#btn-quitter-mode-devoir:hover, #btn-quitter-mode-devoir:focus {
    background: linear-gradient(90deg, #ffb3b3 60%, var(--danger) 100%);
    color: var(--text-primary);
    box-shadow: var(--shadow);
}

/* Blocs du mode devoir */
#devoir-blocs {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 40px;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 2em 0 1em 0;
    min-height: 340px;
}

.devoir-bloc {
    flex: 1 1 0;
    min-width: 280px;
    max-width: 480px;
    border-radius: 22px;
    box-shadow: var(--shadow);
    padding: 2.5em 1.5em 2em 1.5em;
    text-align: center;
    opacity: 0.5;
    transition: var(--transition);
    border: 4px solid transparent;
    margin: 0 12px;
    font-size: 1.18em;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.devoir-bloc.active {
    opacity: 1;
    box-shadow: var(--shadow-lg);
    border-width: 5px;
    z-index: 1;
}

.devoir-bloc-vert { 
    background: var(--bg-tertiary); 
    border-color: var(--success); 
}

.devoir-bloc-orange { 
    background: var(--bg-tertiary); 
    border-color: var(--warning); 
}

.devoir-bloc-rouge { 
    background: var(--bg-tertiary); 
    border-color: var(--danger); 
}

.devoir-bloc-title {
    font-size: 1.35em;
    font-weight: bold;
    margin-bottom: 1em;
    letter-spacing: 0.01em;
    color: var(--text-primary);
}

.devoir-bloc-consigne {
    color: var(--text-primary);
}

.devoir-bloc-consigne ul {
    text-align: left;
    margin: 0.7em auto 0 auto;
    padding-left: 1.5em;
    font-size: 1.05em;
    color: var(--text-secondary);
}

/* Chronomètre du mode devoir */
#devoir-timer-display {
    display: inline-block;
    font-family: var(--font-family);
    font-size: 4em;
    font-weight: bold;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border-radius: 18px;
    padding: 0.15em 0.7em;
    margin-left: 2em;
    margin-right: 2em;
    letter-spacing: 0.06em;
    box-shadow: var(--shadow);
    border: 2.5px solid var(--border-color);
    vertical-align: middle;
    min-width: 170px;
    text-align: center;
    transition: var(--transition);
}

/* Couleur dynamique selon l'état */
.devoir-bloc-vert.active ~ #devoir-timer-display,
#devoir-timer-display.devoir-vert {
    background: var(--bg-tertiary);
    color: var(--success);
    border-color: var(--success);
}

.devoir-bloc-orange.active ~ #devoir-timer-display,
#devoir-timer-display.devoir-orange {
    background: var(--bg-tertiary);
    color: var(--warning);
    border-color: var(--warning);
}

.devoir-bloc-rouge.active ~ #devoir-timer-display,
#devoir-timer-display.devoir-rouge {
    background: var(--bg-tertiary);
    color: var(--danger);
    border-color: var(--danger);
}

/* Boutons du timer */
#devoir-timer-start {
    background: linear-gradient(90deg, var(--success) 60%, #b2ffb2 100%);
    color: var(--text-primary);
    border: 2px solid var(--success);
    font-weight: bold;
    transition: var(--transition);
}

#devoir-timer-start:hover, #devoir-timer-start:focus {
    background: linear-gradient(90deg, #b2ffb2 60%, var(--success) 100%);
    color: var(--text-primary);
    box-shadow: var(--shadow);
}

.btn-devoir {
    background: var(--primary-color);
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin: 0.25rem;
}

.btn-devoir:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-devoir-warning {
    background: var(--warning);
    color: var(--text-primary);
}

.btn-devoir-warning:hover {
    background: var(--warning-dark);
}

.btn-devoir-danger {
    background: var(--danger);
    color: var(--text-primary);
}

.btn-devoir-danger:hover {
    background: var(--danger-dark);
}

/* === MENU NAVIGATION - THÈME SOMBRE === */

#menu-nav {
    margin-bottom: 2em;
    background: var(--bg-secondary);
    padding: 0.7em 0.5em;
    border-radius: 18px;
    box-shadow: var(--shadow);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    width: 100%;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid var(--border-color);
}

#menu-nav button {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1em;
    font-weight: 600;
    padding: 8px 18px;
    margin: 0 2px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    min-width: 120px;
    min-height: 38px;
    outline: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

#menu-nav button:hover, #menu-nav button:focus {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent-color);
    box-shadow: var(--shadow);
}

#menu-nav button:active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--accent);
}

/* === BADGES DE NOTIFICATION === */

.menu-badge {
    display: inline-block;
    min-width: 22px;
    padding: 2px 7px;
    font-size: 0.95em;
    font-weight: bold;
    color: var(--text-primary);
    background: var(--danger);
    border-radius: 12px;
    margin-left: 8px;
    vertical-align: middle;
    box-shadow: var(--shadow-sm);
    line-height: 1.2;
}

.menu-badge-warning {
    background: var(--warning);
}

.menu-badge-info {
    background: var(--info);
}

/* === RESPONSIVE DESIGN MODE DEVOIR === */

@media (max-width: 1100px) {
    #devoir-blocs {
        gap: 18px;
        padding: 1em 0;
    }
    
    .devoir-bloc {
        min-width: 180px;
        max-width: 98vw;
        font-size: 1em;
        padding: 1.2em 0.5em;
    }
}

@media (max-width: 700px) {
    #devoir-blocs {
        flex-direction: column;
        gap: 18px;
        padding: 0.5em 0;
        min-height: 0;
    }
    
    .devoir-bloc {
        min-width: 0;
        max-width: 98vw;
        margin: 0 auto;
        font-size: 0.98em;
        padding: 1em 0.5em;
    }
    
    #devoir-timer-display {
        font-size: 2em;
        min-width: 110px;
        padding: 0.1em 0.3em;
        margin-left: 0.5em;
        margin-right: 0.5em;
    }
    
    #menu-nav {
        flex-direction: column;
        gap: 8px;
        padding: 0.5em 0.1em;
    }
    
    #menu-nav button {
        width: 98vw;
        min-width: 0;
        font-size: 0.97em;
        padding: 10px 0;
        margin: 0 auto;
    }
}

/* === STYLES SUPPLÉMENTAIRES POUR CHART.JS === */

/* Force les couleurs des graphiques Chart.js */
.chartjs-render-monitor {
    background: var(--bg-card) !important;
    border-radius: var(--border-radius) !important;
}

/* Amélioration des tooltips Chart.js pour le thème sombre */
.chartjs-tooltip {
    background: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--border-radius) !important;
    box-shadow: var(--shadow) !important;
}

/* === MODE DEVOIR MODERNISÉ - THÈME SOMBRE === */

/* Container principal du mode devoir */
#mode-devoir-section {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
    box-sizing: border-box;
    position: relative;
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(30, 41, 59, 0.95) 100%);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* État actif du mode devoir */
#mode-devoir-section:not([style*="display: none"]) {
    position: relative;
    z-index: 1;
    margin-top: 0 !important;
    padding-top: 0 !important;
}

.main-content.mode-devoir-active {
    padding-top: 0 !important;
    background: transparent !important;
}

.main-content.mode-devoir-active > *:not(#mode-devoir-section) {
    display: none !important;
}

/* Header du mode devoir */
.devoir-header {
    text-align: center;
    margin: 0 0 2.5rem 0;
    padding: 2.5rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 20px;
    position: relative;
    max-width: 100%;
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.3);
    overflow: hidden;
}

.devoir-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shine 3s ease-in-out infinite;
}

@keyframes shine {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: 100%; }
}

.devoir-title {
    font-size: 2.8rem;
    margin: 0;
    font-weight: 800;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    background: linear-gradient(45deg, #ffffff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.devoir-subtitle {
    font-size: 1.2rem;
    margin: 1rem 0 0 0;
    opacity: 0.95;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Boutons du mode devoir */
.btn-devoir {
    padding: 14px 28px;
    border: none;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.05rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.btn-devoir::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.btn-devoir:hover::before {
    left: 100%;
}

.btn-devoir:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.btn-devoir:active {
    transform: translateY(-1px) scale(1.02);
}

.btn-devoir-primary {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
    border: 2px solid #16a34a;
}

.btn-devoir-primary:hover {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
    box-shadow: 0 12px 30px rgba(34, 197, 94, 0.4);
}

.btn-devoir-secondary {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
    color: white;
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 10;
    border: 2px solid #475569;
    padding: 12px 20px;
}

.btn-devoir-secondary:hover {
    background: linear-gradient(135deg, #475569 0%, #334155 100%);
    box-shadow: 0 12px 30px rgba(100, 116, 139, 0.4);
}

.btn-devoir-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    border: 2px solid #d97706;
}

.btn-devoir-warning:hover {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    box-shadow: 0 12px 30px rgba(245, 158, 11, 0.4);
}

.btn-devoir-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border: 2px solid #dc2626;
}

.btn-devoir-danger:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    box-shadow: 0 12px 30px rgba(239, 68, 68, 0.4);
}

.btn-icon {
    font-size: 1.3em;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Panel de configuration */
.devoir-config-panel {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-radius: 20px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
    margin-bottom: 2.5rem;
    overflow: hidden;
    max-width: 100%;
    border: 2px solid var(--border-color);
    min-height: 200px;
}

.config-tabs {
    display: flex;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-bottom: 2px solid var(--border-color);
}

.config-tab {
    flex: 1;
    padding: 1.2rem 2.5rem;
    border: none;
    background: transparent;
    cursor: pointer;
    font-weight: 700;
    color: var(--text-secondary);
    transition: all 0.4s ease;
    position: relative;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.config-tab::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: all 0.4s ease;
    transform: translateX(-50%);
}

.config-tab.active {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    color: var(--primary-color);
    text-shadow: 0 2px 4px rgba(102, 126, 234, 0.3);
}

.config-tab.active::before {
    width: 80%;
}

.config-tab:hover:not(.active) {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.config-content {
    padding: 2rem 2.5rem;
    background: var(--bg-card);
}

.config-panel {
    display: none;
    animation: fadeInUp 0.5s ease-out;
}

.config-panel.active {
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.config-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.config-label {
    font-weight: 700;
    color: var(--text-primary);
    min-width: 180px;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.time-inputs {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: var(--bg-card);
    padding: 0.5rem 1rem;
    border-radius: 10px;
    border: 2px solid var(--border-color);
}

.time-input {
    width: 70px;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 700;
    background: var(--bg-input);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.time-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
    transform: scale(1.05);
    background: var(--bg-card);
}

.time-input-full {
    padding: 12px 18px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    background: var(--bg-input);
    color: var(--text-primary);
    min-width: 160px;
}

.time-input-full:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
    background: var(--bg-card);
}

.time-separator {
    font-weight: 800;
    color: var(--primary-color);
    font-size: 1.3rem;
}

.config-info {
    display: flex;
    gap: 2.5rem;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 10px;
    border-left: 4px solid var(--info);
}

.config-controls {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2.5rem;
    flex-wrap: wrap;
    min-height: 60px;
    align-items: center;
}

/* Affichage du timer */
.timer-display {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-radius: 24px;
    padding: 2.5rem 2rem;
    margin: 0 auto 2.5rem auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    text-align: center;
    width: 700px;
    max-width: 90vw;
    min-width: 400px;
    border: 2px solid var(--border-color);
    position: static;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Centrage spécifique du timer dans le mode devoir */
#devoir-timer-display {
    margin: 0 auto !important;
    position: static !important;
    min-height: 500px;
    transition: all 0.3s ease;
    align-self: center;
    left: auto !important;
    right: auto !important;
    transform: none !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
}

.timer-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    border-radius: 24px;
    z-index: -1;
    animation: subtle-glow 3s ease-in-out infinite alternate;
}

@keyframes subtle-glow {
    0% { 
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
        box-shadow: inset 0 0 20px rgba(102, 126, 234, 0.1);
    }
    100% { 
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
        box-shadow: inset 0 0 30px rgba(102, 126, 234, 0.15);
    }
}

/* === SECTION DEVOIR MODERNE === */
#section-devoir {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 0;
    margin: 0 2rem 2rem 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    width: calc(100% - 4rem);
    max-width: calc(100% - 4rem);
    box-sizing: border-box;
    flex-shrink: 0;
    overflow: hidden;
}

#ajout-devoir {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    padding: 2.5rem;
    margin: 0;
    position: relative;
    overflow: hidden;
}

#ajout-devoir::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    z-index: 1;
}

#ajout-devoir h3 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2.5rem;
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Grid layout pour les champs */
.devoir-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.devoir-form-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 1.8rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.devoir-form-section:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.devoir-form-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.devoir-form-section h4::before {
    content: '';
    width: 4px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* Styles des champs modernes */
.devoir-form-section input,
.devoir-form-section select {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
    box-sizing: border-box;
}

.devoir-form-section input:focus,
.devoir-form-section select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.devoir-form-section input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

/* Labels modernes */
.devoir-form-section label {
    display: block;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Champs inline pour coefficient et trimestre */
.devoir-inline-fields {
    display: flex;
    gap: 1rem;
    align-items: end;
}

.devoir-inline-field {
    flex: 1;
}

/* Boutons modernes */
.devoir-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.devoir-btn {
    padding: 0.9rem 2rem;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.devoir-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.devoir-btn:hover::before {
    left: 100%;
}

.devoir-btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.devoir-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.devoir-btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.devoir-btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.devoir-btn-danger {
    background: linear-gradient(135deg, var(--danger), #ff6b6b);
    color: white;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.devoir-btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(231, 76, 60, 0.4);
}

/* Container des barèmes */
#baremesContainer {
    background: var(--bg-tertiary);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    border: 1px solid var(--border-color);
}

/* Messages */
#messageDevoir {
    text-align: center;
    padding: 1rem;
    margin: 1.5rem 0;
    border-radius: 8px;
    font-weight: 600;
    display: none;
}

#messageDevoir.success {
    background: rgba(46, 204, 113, 0.1);
    color: var(--success);
    border: 1px solid rgba(46, 204, 113, 0.3);
    display: block;
}

#messageDevoir.error {
    background: rgba(231, 76, 60, 0.1);
    color: var(--danger);
    border: 1px solid rgba(231, 76, 60, 0.3);
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    .devoir-form-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .devoir-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .devoir-btn {
        width: 100%;
        justify-content: center;
    }
    
    .devoir-inline-fields {
        flex-direction: column;
        gap: 0;
    }
}

.timer-main {
    margin-bottom: 2.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.timer-circle {
    position: relative;
    width: min(350px, 80vw);
    height: min(350px, 80vw);
    max-width: 350px;
    max-height: 350px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timer-progress {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    display: block;
    filter: drop-shadow(0 0 20px rgba(102, 126, 234, 0.5));
}

.timer-track {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 4;
}

.timer-fill {
    fill: none;
    stroke: url(#timerGradient);
    stroke-width: 6;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 1s ease-in-out;
}

.timer-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 90%;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.timer-time {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 0 0 0.5rem 0;
    font-family: 'Courier New', monospace;
    text-align: center;
    line-height: 1;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    letter-spacing: 0.05em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.timer-label {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin: 0 0 0.5rem 0;
    text-align: center;
    line-height: 1.2;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timer-end-time {
    font-size: 1rem;
    color: var(--text-muted);
    text-align: center;
    margin: 0;
    line-height: 1.2;
    font-weight: 500;
}

.timer-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap;
    width: 100%;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    flex-shrink: 1;
    min-width: 0;
    background: var(--bg-secondary);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.stat-label {
    display: block;
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.stat-value {
    display: block;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary-color);
    text-shadow: 0 2px 4px rgba(102, 126, 234, 0.3);
}

/* Phases du devoir */
.devoir-phases {
    margin-bottom: 2.5rem;
}

.phase-indicator {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.phase-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1.5rem;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    opacity: 0.6;
    min-width: 140px;
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.phase-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--border-color);
    transition: all 0.4s ease;
}

.phase-item.active {
    opacity: 1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.3);
}

.phase-item.active::before {
    background: linear-gradient(90deg, #f093fb, #f5576c);
}

.phase-icon {
    font-size: 2.5rem;
    margin-bottom: 0.8rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.phase-title {
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Messages contextuels */
.devoir-messages {
    margin-bottom: 2.5rem;
}

.message-card {
    display: none;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-radius: 20px;
    padding: 2rem 2.5rem;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
    border-left: 6px solid var(--primary-color);
    max-width: 100%;
    position: relative;
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.message-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.message-card.active {
    display: block;
    animation: slideInUp 0.6s ease-out;
}

.message-card.preparation::before {
    background: linear-gradient(180deg, #3b82f6, #1d4ed8);
}

.message-card.devoir::before {
    background: linear-gradient(180deg, #22c55e, #16a34a);
}

.message-card.warning::before {
    background: linear-gradient(180deg, #f59e0b, #d97706);
}

.message-card.finish::before {
    background: linear-gradient(180deg, #ef4444, #dc2626);
}

.message-header h3 {
    margin: 0 0 1.5rem 0;
    color: var(--text-primary);
    font-size: 1.8rem;
    font-weight: 800;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.message-content p {
    margin: 0 0 1.5rem 0;
    color: var(--text-secondary);
    font-size: 1.2rem;
    line-height: 1.6;
}

.message-content ul {
    margin: 0;
    padding-left: 2rem;
    color: var(--text-secondary);
}

.message-content li {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
    line-height: 1.5;
    position: relative;
}

.message-content li::marker {
    color: var(--primary-color);
}

/* Contrôles sonores */
.sound-controls {
    text-align: center;
    margin-top: 2.5rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.sound-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.sound-toggle:hover {
    background: var(--bg-hover);
    transform: translateY(-2px);
}

.sound-label {
    user-select: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Animations supplémentaires */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

.timer-warning {
    animation: pulse 2s infinite;
}

.timer-danger {
    animation: pulse 1s infinite;
}

/* États spéciaux */
.timer-warning .timer-fill {
    stroke: url(#timerWarningGradient);
}

.timer-danger .timer-fill {
    stroke: url(#timerDangerGradient);
}

/* Responsive pour mode devoir */
@media (max-width: 768px) {
    #mode-devoir-section {
        padding: 1rem;
    }
    
    .devoir-header {
        padding: 2rem 1.5rem;
        margin-bottom: 2rem;
    }
    
    .devoir-title {
        font-size: 2.2rem;
    }
    
    .timer-display {
        width: min(90vw, 500px);
        min-width: 320px;
        padding: 2rem 1.5rem;
    }
    
    .timer-circle {
        width: min(280px, 70vw);
        height: min(280px, 70vw);
    }
    
    .timer-time {
        font-size: 2.5rem;
    }
    
    .config-content {
        padding: 1.5rem;
    }
    
    .config-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .config-label {
        min-width: auto;
        margin-bottom: 0.5rem;
    }
    
    .timer-stats {
        gap: 1.5rem;
        flex-direction: column;
    }
    
    .phase-indicator {
        gap: 1rem;
        justify-content: center;
    }
    
    .phase-item {
        min-width: 100px;
        padding: 1.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .phase-icon {
        font-size: 2rem;
    }
    
    .message-card {
        padding: 1.5rem;
    }
    
    .config-controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-devoir {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .timer-display {
        width: min(95vw, 400px);
        min-width: 300px;
        padding: 1.5rem 1rem;
    }
    
    .timer-time {
        font-size: 2rem;
    }
    
    .timer-circle {
        width: min(220px, 60vw);
        height: min(220px, 60vw);
    }
    
    .config-tabs {
        flex-direction: column;
    }
    
    .time-inputs {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .devoir-title {
        font-size: 1.8rem;
    }
    
    .phase-indicator {
        gap: 0.5rem;
    }
    
    .phase-item {
        min-width: 80px;
        padding: 1rem 0.5rem;
    }
}

/* === ANIMATIONS GLOBALES === */

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Animation pour les loaders */
.loader-spinner {
    animation: spin 1s linear infinite;
}

/* === AMÉLIORATION DES CONTRASTES === */

/* S'assurer que tous les textes sont visibles */
* {
    color: inherit;
}

/* Forcer les couleurs pour les éléments spécifiques */
#messageClasse, #messageEleve, #messageDevoir, #messageNote, #importNotesMessage {
    color: var(--text-primary) !important;
}

/* Messages de succès */
[style*="color:green"], [style*="color:#27ae60"] {
    color: var(--success) !important;
}

/* Messages d'erreur */
[style*="color:red"], [style*="color:#e74c3c"] {
    color: var(--danger) !important;
}

/* Messages d'avertissement */
[style*="color:orange"], [style*="color:#f39c12"] {
    color: var(--warning) !important;
}

/* Liens et textes bleus */
[style*="color:blue"], [style*="color:#004d99"], [style*="color:#217dbb"] {
    color: var(--primary-color) !important;
}

/* === CORRECTIONS FINALES === */

/* Correction du contraste des tableaux */
table, th, td {
    color: var(--text-primary) !important;
}

/* Correction du contraste des graphiques */
canvas {
    background: var(--bg-card) !important;
    color: var(--text-primary) !important;
}

/* Correction des sélecteurs et inputs */
select, input, textarea {
    color: var(--text-primary) !important;
    background: var(--bg-input) !important;
}

/* Correction des labels */
label {
    color: var(--text-secondary) !important;
}

/* === OPTIMISATION DE LA LARGEUR === */

/* Force l'utilisation de toute la largeur disponible */
html {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

/* Conteneurs principaux */
.main-container,
.main-content,
section,
#ajout-devoir,
#ajout-note,
#menu-selection,
#ajout-classe,
#ajout-eleve,
#import-notes-section,
#section-vue-classe,
#section-plan-classe,
#section-appel,
#mode-devoir-section {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
}

/* Tableaux et conteneurs spéciaux */
#vue-classe-container,
#plan-classe-grid,
#graphiques-notes,
#devoir-blocs,
#menu-nav {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
}

/* Tables */
table {
    width: 100% !important;
    max-width: 100% !important;
    table-layout: auto !important;
}

/* === FOOTER MODERNE - THÈME SOMBRE === */

.modern-footer {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.footer-container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    box-sizing: border-box;
}

.footer-container p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Responsive: s'assurer que sur petits écrans aussi */
@media (max-width: 768px) {
    .main-container {
        margin-left: 0 !important;
        width: 100vw !important;
        max-width: 100vw !important;
    }
    
    .footer-container {
        padding: 0 1rem;
    }
}

/* ================================
   SECTION ÉLÈVES - MODERN DESIGN
   ================================ */

#section-eleve {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Structure principale élèves */
.eleves-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (max-width: 968px) {
    .eleves-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Section ajout d'élèves */
.eleves-ajout-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-size: 200% 200%;
    animation: gradientShift 8s ease infinite;
    border-radius: 16px;
    padding: 2rem;
    color: white;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.eleves-ajout-section h3 {
    margin: 0 0 1.5rem 0;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.eleves-form-group {
    margin-bottom: 1.5rem;
}

.eleves-form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.eleves-form-group select,
.eleves-form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.eleves-form-group select:focus,
.eleves-form-group textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.eleves-form-group textarea {
    resize: vertical;
    min-height: 120px;
    font-family: 'Courier New', monospace;
    line-height: 1.4;
}

.eleves-form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.eleves-form-group select option {
    background: var(--bg-color);
    color: var(--text-color);
}

/* Boutons élèves */
.eleves-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.eleves-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.eleves-btn:active {
    transform: translateY(0);
}

/* Messages élèves */
.eleves-message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.eleves-message.error {
    background: rgba(244, 67, 54, 0.2);
    border-color: rgba(244, 67, 54, 0.3);
    color: #ffcdd2;
}

.eleves-message.success {
    background: rgba(76, 175, 80, 0.2);
    border-color: rgba(76, 175, 80, 0.3);
    color: #c8e6c9;
}

/* Section liste des élèves */
.eleves-liste-section {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

.eleves-liste-section h3 {
    margin: 0 0 1.5rem 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Contrôles de liste élèves */
.eleves-liste-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.eleves-search-box {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.eleves-search-box:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.eleves-filter-classe {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.eleves-filter-classe:focus {
    outline: none;
    border-color: var(--primary);
}

/* Grille des élèves */
.eleves-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.eleve-card {
    background: var(--input-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.eleve-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.eleve-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
}

.eleve-card:hover::before {
    opacity: 1;
}

.eleve-info {
    margin-bottom: 1rem;
}

.eleve-nom {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.eleve-classe {
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: var(--primary-light);
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    display: inline-block;
    font-weight: 500;
}

.eleve-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

.eleve-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.eleve-btn-edit {
    background: var(--info-light);
    color: var(--info);
}

.eleve-btn-edit:hover {
    background: var(--info);
    color: white;
    transform: translateY(-1px);
}

.eleve-btn-delete {
    background: var(--danger-light);
    color: var(--danger);
}

.eleve-btn-delete:hover {
    background: var(--danger);
    color: white;
    transform: translateY(-1px);
}

/* Stats élèves */
.eleves-stats {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 100%);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.eleves-stat-item {
    text-align: center;
    flex: 1;
    min-width: 120px;
}

.eleves-stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
}

.eleves-stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* États vides */
.eleves-empty {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.eleves-empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.eleves-empty-text {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.eleves-empty-subtext {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive design pour élèves */
@media (max-width: 768px) {
    #section-eleve {
        padding: 1rem;
    }
    
    .eleves-liste-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .eleves-search-box,
    .eleves-filter-classe {
        width: 100%;
    }
    
    .eleves-grid {
        grid-template-columns: 1fr;
    }
    
    .eleves-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .eleves-stat-item {
        min-width: auto;
    }
}

/* ================================
   SECTION CALENDRIER - MODERN DESIGN
   ================================ */

#section-calendrier {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header du calendrier */
.calendrier-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    color: white;
    text-align: center;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
}

.calendrier-header h3 {
    margin: 0 0 1rem 0;
    font-size: 1.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.calendrier-subtitle {
    font-size: 1rem;
    opacity: 0.9;
    margin: 0;
}

/* Contrôles du calendrier */
.calendar-controls-container {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

.calendar-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.calendar-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.calendar-nav-btn {
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
}

.calendar-nav-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.calendar-nav-btn:active {
    transform: translateY(0);
}

.calendar-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    min-width: 200px;
    text-align: center;
}

.calendar-week-indicator {
    display: flex !important;
    align-items: center;
    gap: 0.8rem;
    background: var(--bg-secondary);
    padding: 0.7rem 1.2rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.week-indicator-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.week-indicator-badge {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 0.4rem 1rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
    min-width: 40px;
    text-align: center;
    animation: weekPulse 3s ease-in-out infinite;
}

@keyframes weekPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 16px rgba(52, 152, 219, 0.5);
    }
}

.week-indicator-badge.week-b {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    box-shadow: 0 4px 12px rgba(0, 191, 174, 0.3);
}

@keyframes weekPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.calendar-view-selector {
    display: flex;
    gap: 0.5rem;
}

.calendar-view-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.calendar-view-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.calendar-view-btn:hover:not(.active) {
    border-color: var(--primary);
    background: var(--primary-light);
}

/* Conteneur principal du calendrier */
.calendar-main {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

/* Grille du calendrier */
#calendar {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Inter', sans-serif;
}

#calendar th,
#calendar td {
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    vertical-align: top;
    position: relative;
    min-height: 80px;
    width: 14.28%;
}

#calendar th {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 100%);
    color: var(--primary);
    font-weight: 600;
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#calendar td {
    background: var(--input-bg);
    transition: all 0.3s ease;
    cursor: pointer;
}

#calendar td:hover {
    background: var(--primary-light);
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
    z-index: 1;
}

/* Dates du calendrier */
.calendar-date {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.calendar-date.other-month {
    color: var(--text-secondary);
    opacity: 0.5;
}

.calendar-date.today {
    background: var(--primary);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.4);
}

/* Événements dans le calendrier */
.calendar-event {
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin: 0.125rem 0;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.calendar-event:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.calendar-event.devoir {
    background: var(--danger);
}

.calendar-event.note {
    background: var(--info);
}

/* Légende des trimestres modernisée */
.trimestre-legend-container {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

.trimestre-legend-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.trimestre-legend {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.trimestre-badge {
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.trimestre-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.trimestre-badge.trimestre-1 {
    background: linear-gradient(135deg, #b3e5fc 0%, #81d4fa 100%);
    color: #0277bd;
}

.trimestre-badge.trimestre-1:hover {
    border-color: #0277bd;
}

.trimestre-badge.trimestre-2 {
    background: linear-gradient(135deg, #ffe082 0%, #ffcc02 100%);
    color: #f57f17;
}

.trimestre-badge.trimestre-2:hover {
    border-color: #f57f17;
}

.trimestre-badge.trimestre-3 {
    background: linear-gradient(135deg, #c8e6c9 0%, #a5d6a7 100%);
    color: #2e7d32;
}

.trimestre-badge.trimestre-3:hover {
    border-color: #2e7d32;
}

/* Boutons d'action du calendrier */
.calendar-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.calendar-btn {
    background: var(--card-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.calendar-btn:hover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.calendar-btn.primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.calendar-btn.primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* Modal d'ajout de note modernisée */
.calendar-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.calendar-modal {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    transform: scale(0.9);
    opacity: 0;
    transition: all 0.3s ease;
}

.calendar-modal.show {
    transform: scale(1);
    opacity: 1;
}

.calendar-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.calendar-modal-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.calendar-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.calendar-modal-close:hover {
    background: var(--danger-light);
    color: var(--danger);
}

.calendar-modal-content {
    margin-bottom: 2rem;
}

.calendar-modal-field {
    margin-bottom: 1.5rem;
}

.calendar-modal-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.calendar-modal-textarea {
    width: 100%;
    min-height: 100px;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: inherit;
    resize: vertical;
    transition: all 0.3s ease;
}

.calendar-modal-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.calendar-modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Section d'édition des trimestres */
.trimestres-edit-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

.trimestres-edit-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.trimestres-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.trimestre-field {
    background: var(--input-bg);
    border-radius: 8px;
    padding: 1.5rem;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.trimestre-field:hover {
    border-color: var(--primary);
}

.trimestre-field-title {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.trimestre-date-inputs {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.trimestre-date-input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: var(--card-bg);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.trimestre-date-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Responsive design pour calendrier */
@media (max-width: 768px) {
    #section-calendrier {
        padding: 1rem;
    }
    
    .calendar-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .calendar-nav {
        justify-content: center;
    }
    
    .calendar-view-selector {
        justify-content: center;
    }
    
    #calendar th,
    #calendar td {
        padding: 0.5rem;
        min-height: 60px;
        font-size: 0.8rem;
    }
    
    .trimestre-legend {
        flex-direction: column;
        gap: 1rem;
    }
    
    .trimestre-badge {
        width: 100%;
        text-align: center;
    }
    
    .calendar-actions {
        flex-direction: column;
    }
    
    .calendar-btn {
        justify-content: center;
    }
    
    .trimestres-form {
        grid-template-columns: 1fr;
    }
    
    .trimestre-date-inputs {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ========================================
   SECTION MATHIA - STYLES MODERNES 2025
   ======================================== */

#section-mathia {
    padding: 2rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #1a202c 100%);
    color: var(--text-primary);
    min-height: 100vh;
    position: relative;
}

#section-mathia::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--secondary-color));
    opacity: 0.8;
}

/* Variables spécifiques à mathIA */
#section-mathia {
    --mathia-accent: var(--primary-color);
    --mathia-accent-hover: var(--primary-dark);
    --mathia-muted: var(--text-muted);
    --mathia-card-bg: var(--bg-card);
    --mathia-card-border: var(--border-color);
    --mathia-panel-radius: var(--border-radius);
    --mathia-danger: var(--danger);
    --mathia-success: var(--success);
    --mathia-warning: var(--warning);
    --mathia-info: var(--info);
}

.mathia-wrap {
    max-width: 95%;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Prompt Section */
label[for="mathia-promptBox"] {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--mathia-accent), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

textarea#mathia-promptBox {
    width: 100%;
    min-height: 160px;
    padding: 20px;
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: var(--transition);
    font-family: var(--font-family);
    box-shadow: var(--shadow-sm);
}

textarea#mathia-promptBox:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), var(--shadow-lg);
    border-color: var(--mathia-accent);
    transform: translateY(-2px);
    background: var(--bg-secondary);
}

textarea#mathia-promptBox::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

/* Controls */
.mathia-controls {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-top: 20px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
    box-shadow: var(--shadow-sm);
}

.mathia-controls-right {
    margin-left: auto;
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Buttons */
#section-mathia button {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--border-radius);
    border: none;
    background: linear-gradient(135deg, var(--mathia-accent), var(--mathia-accent-hover));
    color: white;
    font-weight: 600;
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

#section-mathia button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

#section-mathia button:hover::before {
    left: 100%;
}

#section-mathia button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--mathia-accent-hover), var(--primary-dark));
}

#section-mathia button:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

#section-mathia button.mathia-secondary {
    background: var(--bg-secondary);
    color: var(--mathia-accent);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

#section-mathia button.mathia-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--mathia-accent);
    color: var(--mathia-accent);
}

#section-mathia button.mathia-ghost {
    background: transparent;
    color: var(--mathia-accent);
    border: 2px dashed var(--border-light);
    box-shadow: none;
}

#section-mathia button.mathia-ghost:hover {
    background: var(--bg-hover);
    border-style: solid;
    border-color: var(--mathia-accent);
}

#mathia-status {
    margin-left: 12px;
    color: var(--mathia-success);
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: 4px 8px;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 6px;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

#mathia-infoPanel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 12px 16px;
    margin: 16px 0;
    border-left: 4px solid var(--mathia-info);
}

/* Layout & panels */
.mathia-grid {
    display: grid;
    grid-template-columns: 1fr 42%;
    gap: 24px;
    margin-top: 24px;
}

.mathia-panel {
    background: var(--mathia-card-bg);
    border: 1px solid var(--mathia-card-border);
    padding: 20px;
    border-radius: var(--mathia-panel-radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.mathia-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--mathia-accent), var(--accent-color));
    opacity: 0.8;
}

.mathia-panel h3 {
    margin: 0 0 16px 0;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mathia-panel h3::before {
    content: '';
    width: 4px;
    height: 20px;
    background: linear-gradient(135deg, var(--mathia-accent), var(--accent-color));
    border-radius: 2px;
}

/* Raw response */
textarea#mathia-rawResponse {
    width: 100%;
    min-height: 240px;
    padding: 16px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    resize: vertical;
    background: var(--bg-primary);
    color: var(--text-secondary);
    transition: var(--transition);
}

textarea#mathia-rawResponse:focus {
    border-color: var(--mathia-accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Interpretation */
#mathia-interpretation {
    display: block;
    border-radius: var(--border-radius);
    padding: 20px;
    min-height: 200px;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.mathia-text-seg {
    color: var(--text-primary);
    margin: 16px 0;
    font-size: var(--font-size-base);
}

.mathia-hint {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 2px dashed var(--border-color);
}

/* MathField rules - Thème sombre optimisé */
#section-mathia math-field {
    display: inline-block;
    vertical-align: middle;
    border: none;
    padding: 2px 4px;
    margin: 0 6px;
    line-height: 1.2;
    min-height: 0;
    min-width: 0;
    white-space: nowrap;
    word-break: normal;
    overflow: visible;
    background: transparent !important;
    color: var(--text-primary) !important;
}

#section-mathia math-field.block-math,
#section-mathia .block-math math-field {
    display: block;
    margin: 10px 0;
    padding: 12px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    background: transparent !important;
    color: var(--text-primary) !important;
}

#section-mathia .inline-math math-field,
#section-mathia math-field.inline-math {
    display: inline-block;
    white-space: nowrap;
    vertical-align: middle;
    margin: 0 4px;
    background: transparent !important;
    color: var(--text-primary) !important;
}

/* Styles spécifiques pour les éléments internes de MathLive */
#section-mathia math-field * {
    background: transparent !important;
    color: var(--text-primary) !important;
}

#section-mathia math-field .ML__text,
#section-mathia math-field .ML__base,
#section-mathia math-field .ML__mathfield,
#section-mathia math-field .katex,
#section-mathia math-field .katex-html,
#section-mathia math-field .mord,
#section-mathia math-field .mop,
#section-mathia math-field .mbin,
#section-mathia math-field .mrel {
    color: var(--text-primary) !important;
    background: transparent !important;
}

#section-mathia math-field .ML__selection {
    background: var(--mathia-accent) !important;
    opacity: 0.3 !important;
}

#section-mathia math-field .ML__caret {
    border-color: var(--mathia-accent) !important;
}

/* Styles globaux pour MathLive dans tout TeachTool */
math-field {
    background: transparent !important;
    color: var(--text-primary) !important;
}

math-field * {
    color: var(--text-primary) !important;
    background: transparent !important;
}

math-field .ML__text,
math-field .ML__base,
math-field .ML__mathfield,
math-field .katex,
math-field .katex-html,
math-field .mord,
math-field .mop,
math-field .mbin,
math-field .mrel,
math-field .mopen,
math-field .mclose,
math-field .mpunct,
math-field .minner {
    color: var(--text-primary) !important;
    background: transparent !important;
}

math-field .ML__selection {
    background: var(--primary-color) !important;
    opacity: 0.3 !important;
}

math-field .ML__caret {
    border-color: var(--primary-color) !important;
}

/* Table rendering */
#section-mathia table {
    width: 100%;
    border-collapse: collapse;
    margin: 8px 0;
    font-size: 0.96rem;
    background: var(--bg-secondary);
}

#section-mathia table td,
#section-mathia table th {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    vertical-align: middle;
    color: var(--text-primary);
}

#section-mathia table tr:nth-child(even) {
    background: var(--bg-tertiary);
}

/* File manager */
.mathia-file-manager-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    padding: 16px;
    border-radius: var(--border-radius);
    margin: -20px -20px 16px -20px;
}

.mathia-file-toolbar {
    display: flex;
    gap: 8px;
}

.mathia-toolbar-btn {
    background: var(--bg-secondary) !important;
    border: 2px solid var(--border-color) !important;
    color: var(--mathia-accent) !important;
    padding: 8px 12px !important;
    border-radius: var(--border-radius) !important;
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.mathia-toolbar-btn:hover {
    background: var(--mathia-accent) !important;
    color: white !important;
    border-color: var(--mathia-accent) !important;
    transform: translateY(-1px) !important;
    box-shadow: var(--shadow) !important;
}

.mathia-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-sm);
}

.mathia-breadcrumb-item {
    color: var(--mathia-accent);
    cursor: pointer;
    padding: 6px 12px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
    border: 1px solid transparent;
}

.mathia-breadcrumb-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.mathia-breadcrumb-item.active {
    background: linear-gradient(135deg, var(--mathia-accent), var(--mathia-accent-hover));
    color: white;
    cursor: default;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.mathia-breadcrumb-separator {
    color: var(--text-muted);
    margin: 0 4px;
    font-weight: bold;
}

.mathia-breadcrumb-item.mathia-breadcrumb-drop-target {
    background: var(--success) !important;
    color: white !important;
    transform: scale(1.05);
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.3);
}

/* File items */
.mathia-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-card);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    margin-bottom: 8px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.mathia-file-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s;
}

.mathia-file-item:hover::before {
    left: 100%;
}

.mathia-file-item:hover {
    background: var(--bg-secondary);
    border-color: var(--mathia-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.mathia-file-item.selected {
    background: var(--bg-hover);
    border-color: var(--mathia-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.mathia-file-item.folder {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-color: var(--warning);
    border-left: 4px solid var(--warning);
}

.mathia-file-item.folder:hover {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-color: var(--warning);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.mathia-file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.mathia-file-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.mathia-file-name {
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: var(--font-size-base);
}

/* Exercise list */
#mathia-exerciseList {
    padding: 6px 2px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mathia-exercise-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    border-radius: 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}

.mathia-exercise-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 40px rgba(12,30,60,0.06);
    background: var(--bg-hover);
}

.mathia-exercise-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-right: 12px;
    font-weight: 700;
    color: var(--text-primary);
}

.mathia-exercise-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.mathia-exercise-btn {
    background: linear-gradient(90deg, var(--mathia-accent), #1a5f8a) !important;
    color: #fff !important;
    border: none !important;
    padding: 8px 10px !important;
    border-radius: 8px !important;
    font-weight: 700 !important;
}

.mathia-exercise-delete {
    background: transparent !important;
    border: 0 !important;
    color: var(--mathia-danger) !important;
    font-size: 18px !important;
    cursor: pointer;
    padding: 6px !important;
    border-radius: 8px !important;
}

.mathia-exercise-delete:hover {
    background: rgba(208,67,67,0.06) !important;
    transform: translateY(-2px) !important;
}

/* Modal */
.mathia-modal-backdrop {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.75);
    z-index: 9999;
    backdrop-filter: blur(8px);
    animation: mathiaBackdropFadeIn 0.3s ease-out;
}

@keyframes mathiaBackdropFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.mathia-modal {
    width: 100%;
    max-width: 560px;
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    animation: mathiaModalSlideIn 0.4s ease-out;
    position: relative;
    overflow: hidden;
}

.mathia-modal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--mathia-accent), var(--accent-color), var(--secondary-color));
}

@keyframes mathiaModalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.mathia-modal h4 {
    margin: 0 0 20px 0;
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mathia-modal .mathia-row {
    margin-top: 24px;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    align-items: center;
}

.mathia-small {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.mathia-modal input,
.mathia-modal select {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 12px 16px;
    font-size: var(--font-size-base);
    transition: var(--transition);
    font-family: var(--font-family);
}

.mathia-modal input:focus,
.mathia-modal select:focus {
    border-color: var(--mathia-accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--bg-card);
}

/* Context menu */
.mathia-context-menu {
    position: fixed;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    z-index: 10000;
    min-width: 180px;
    max-width: 250px;
    display: none;
    animation: mathiaContextSlideIn 0.2s ease-out;
    overflow: hidden;
    white-space: nowrap;
}

@keyframes mathiaContextSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Style pour un repositionnement fluide */
.mathia-context-menu.repositioning {
    transition: left 0.2s ease-out, top 0.2s ease-out;
}

.mathia-context-item {
    padding: 12px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.mathia-context-item:last-child {
    border-bottom: none;
}

.mathia-context-item:hover {
    background: var(--bg-hover);
    color: var(--mathia-accent);
    padding-left: 20px;
}

/* Modales spécialisées */
.mathia-share-modal,
.mathia-shared-files-modal {
    max-width: 600px;
}

.mathia-users-list {
    max-height: 300px;
    overflow-y: auto;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    padding: 8px;
}

.mathia-user-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 4px;
}

.mathia-user-item:hover {
    background: var(--bg-hover);
}

.mathia-user-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin: 0;
}

.mathia-user-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mathia-user-name {
    font-weight: 600;
    color: var(--text-primary);
}

.mathia-user-role {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 500;
}

.mathia-shared-files-list {
    max-height: 400px;
    overflow-y: auto;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    padding: 12px;
}

.mathia-shared-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 8px;
    transition: var(--transition);
}

.mathia-shared-file-item:hover {
    background: var(--bg-hover);
    transform: translateX(4px);
}

/* Styles pour le drag & drop */
.mathia-file-item.mathia-dragging {
    opacity: 0.5;
    transform: rotate(5deg);
    z-index: 1000;
}

.mathia-file-item.mathia-drop-target {
    background: var(--bg-hover) !important;
    border-color: var(--success) !important;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.3) !important;
    transform: scale(1.02) !important;
}

.mathia-file-item.mathia-drop-target::after {
    content: '📥 Déposer ici';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--success);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    pointer-events: none;
    z-index: 10;
}

/* Styles pour la modale de déplacement */
.mathia-folders-list {
    max-height: 300px;
    overflow-y: auto;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    padding: 8px;
}

.mathia-folder-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 4px;
    border: 1px solid transparent;
}

.mathia-folder-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.mathia-folder-item input[type="radio"] {
    width: 18px;
    height: 18px;
    margin: 0;
}

.mathia-folder-item input[type="radio"]:checked + .mathia-folder-info {
    color: var(--mathia-accent);
    font-weight: 600;
}

.mathia-folder-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mathia-folder-icon {
    font-size: 1.1rem;
}

.mathia-folder-name {
    color: var(--text-primary);
}

.mathia-context-item:hover {
    background: var(--bg-hover);
}

.mathia-context-item:first-child {
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.mathia-context-item:last-child {
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
}

/* Sharing system */
.mathia-share-modal,
.mathia-shared-files-modal {
    min-width: 400px;
    max-width: 500px;
}

.mathia-users-list {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
}

.mathia-user-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

.mathia-user-item:last-child {
    border-bottom: none;
}

.mathia-user-item:hover {
    background: var(--bg-hover);
}

.mathia-user-info {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.mathia-user-name {
    font-weight: 600;
    color: var(--text-primary);
}

.mathia-user-email {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.mathia-user-checkbox {
    margin-left: 8px;
}

.mathia-shared-files-list {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
}

.mathia-shared-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
    cursor: pointer;
}

.mathia-shared-file-item:last-child {
    border-bottom: none;
}

.mathia-shared-file-item:hover {
    background: var(--bg-hover);
}

.mathia-shared-file-info {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.mathia-shared-file-name {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.mathia-shared-file-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.mathia-shared-file-actions {
    display: flex;
    gap: 4px;
}

.mathia-btn-load-shared {
    background: var(--mathia-accent) !important;
    color: white !important;
    border: none !important;
    padding: 4px 8px !important;
    border-radius: 4px !important;
    font-size: 0.8rem !important;
    cursor: pointer;
    transition: background 0.2s;
}

.mathia-btn-load-shared:hover {
    background: #1a5f8a !important;
    transform: none !important;
    box-shadow: none !important;
}

.mathia-hint {
    font-size: 0.92rem;
    color: var(--mathia-muted);
}

/* Responsive */
@media (max-width: 980px) {
    .mathia-grid {
        grid-template-columns: 1fr;
    }
    
    #mathia-exercisesPanel {
        order: 2;
    }
    
    .mathia-controls-right {
        order: 2;
        width: 100%;
        justify-content: flex-start;
        margin-top: 8px;
    }
    
    .mathia-controls {
        gap: 8px;
    }
}

/* Print styles */
@media print {
    #section-mathia .mathia-controls,
    #section-mathia .mathia-controls-right,
    #section-mathia #mathia-status,
    #section-mathia #mathia-modelSelect,
    #section-mathia label[for="mathia-promptBox"],
    #section-mathia #mathia-promptBox,
    #section-mathia #mathia-exerciseList,
    #section-mathia #mathia-exercisesPanel,
    #section-mathia .mathia-modal-backdrop {
        display: none !important;
    }
    
    #section-mathia .mathia-grid {
        display: block !important;
    }
    
    #section-mathia .mathia-panel {
        border: none !important;
        box-shadow: none !important;
        padding: 6px 0 !important;
    }
    
    #section-mathia #mathia-rawPanel,
    #section-mathia #mathia-interpretation {
        width: 100% !important;
        margin: 0 0 6px 0 !important;
    }
    
    #section-mathia math-field {
        white-space: normal !important;
    }
    
    #section-mathia .block-math > math-field,
    #section-mathia math-field.block-math,
    #section-mathia .block-math math-field {
        display: block !important;
        width: 100% !important;
        margin: 6px 0 !important;
    }
    
    #section-mathia table {
        width: 100% !important;
        border-collapse: collapse !important;
        margin: 6px 0 !important;
    }
    
    #section-mathia table td,
    #section-mathia table th {
        border: 1px solid #999 !important;
        padding: 8px !important;
        vertical-align: middle !important;
        font-size: 12px;
    }
    
    /* Responsive MathIA */
    .mathia-grid {
        grid-template-columns: 1fr !important;
        gap: 16px !important;
    }
    
    .mathia-controls {
        flex-direction: column !important;
        align-items: stretch !important;
    }
    
    .mathia-controls-right {
        margin-left: 0 !important;
        margin-top: 12px !important;
        justify-content: center !important;
    }
    
    .mathia-modal {
        margin: 20px !important;
        max-width: calc(100vw - 40px) !important;
        padding: 20px !important;
    }
    
    .mathia-file-manager-header {
        flex-direction: column !important;
        gap: 12px !important;
        align-items: stretch !important;
    }
    
    .mathia-file-toolbar {
        justify-content: center !important;
        flex-wrap: wrap !important;
    }
    
    .mathia-breadcrumb {
        flex-wrap: wrap !important;
        gap: 4px !important;
    }
    
    #section-mathia button {
        padding: 10px 16px !important;
        font-size: var(--font-size-sm) !important;
    }
}

/* ========================================
   FIN SECTION MATHIA
   ======================================== */

/* ========================================
   SECTION AJOUTER UNE NOTE - MODERNE
   ======================================== */

#ajout-note {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

#ajout-note::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--success));
    opacity: 0.8;
}

#ajout-note h3 {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 1rem;
}

#ajout-note h3::before {
    content: '📝';
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#ajout-note > div:first-of-type {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--info);
}

#ajout-note > div:first-of-type em {
    color: var(--text-secondary);
    font-style: normal;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

#ajout-note > div:first-of-type em::before {
    content: '💡';
    font-size: 1.1rem;
}

/* Styles pour les champs de saisie */
#filtrePrenomEleve {
    width: 100% !important;
    max-width: 400px;
    padding: 12px 16px !important;
    border: 2px solid var(--border-color) !important;
    border-radius: var(--border-radius) !important;
    background: var(--bg-input) !important;
    color: var(--text-primary) !important;
    font-size: var(--font-size-base) !important;
    font-family: var(--font-family) !important;
    transition: var(--transition) !important;
    margin-bottom: 1rem !important;
    box-shadow: var(--shadow-sm) !important;
}

#filtrePrenomEleve:focus {
    border-color: var(--primary-color) !important;
    outline: none !important;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), var(--shadow) !important;
    transform: translateY(-2px) !important;
}

#eleveNoteSelect {
    width: 100%;
    max-width: 400px;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: var(--transition);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
}

#eleveNoteSelect:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), var(--shadow);
}

/* Conteneur des points d'exercices */
#pointsExercices {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 1.5rem 0;
    box-shadow: var(--shadow-sm);
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

#pointsExercices h4 {
    grid-column: 1 / -1;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

#pointsExercices h4::before {
    content: '📊';
    font-size: 1.2rem;
}

/* Styles pour les inputs des exercices */
#pointsExercices input[type="number"] {
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    transition: var(--transition);
    width: 100%;
}

#pointsExercices input[type="number"]:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

#pointsExercices label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    margin-bottom: 4px;
    display: block;
}

/* Note finale */
.note-finale {
    background: linear-gradient(135deg, var(--success) 0%, var(--info) 100%);
    color: white !important;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: var(--font-size-lg);
    font-weight: 700;
    text-align: center;
    margin: 1.5rem 0;
    box-shadow: var(--shadow);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.note-finale::before {
    content: '🏆';
    font-size: 1.3rem;
}

/* Commentaire */
#commentaireNote {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    resize: vertical;
    min-height: 80px;
    margin-bottom: 1.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

#commentaireNote:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), var(--shadow);
}

#commentaireNote::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

/* Bouton d'ajout de note */
#ajout-note button {
    background: linear-gradient(135deg, var(--success) 0%, var(--success-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

#ajout-note button::before {
    content: '✅';
    font-size: 1.1rem;
}

#ajout-note button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

#ajout-note button:hover::after {
    left: 100%;
}

#ajout-note button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--success-dark) 0%, var(--success) 100%);
}

#ajout-note button:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

/* Message de succès */
#messageNote {
    background: var(--bg-card);
    border: 2px solid var(--success);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-top: 1rem;
    color: var(--success);
    font-weight: 600;
    display: none;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-sm);
}

#messageNote::before {
    content: '✅';
    font-size: 1.2rem;
}

#messageNote.show {
    display: flex;
    animation: slideInUp 0.3s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive design */
@media (max-width: 768px) {
    #ajout-note {
        padding: 1.5rem;
        margin: 1rem 0;
    }
    
    #pointsExercices {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    
    #filtrePrenomEleve,
    #eleveNoteSelect {
        max-width: 100%;
    }
    
    .note-finale {
        font-size: var(--font-size-base);
        padding: 0.75rem 1rem;
    }
}

/* ========================================
   NOTIFICATIONS CRÉATION DEVOIR
   ======================================== */

.devoir-message-success {
    margin-top: 1.5rem;
}

.devoir-success-notification {
    background: linear-gradient(135deg, var(--success) 0%, var(--success-dark) 100%);
    border: 2px solid var(--success);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    color: white;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.devoir-success-notification::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: shimmer 2s ease-in-out;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.devoir-success-notification.show {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.success-icon {
    font-size: 2rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.success-content {
    flex: 1;
}

.success-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.success-title::after {
    content: '🎉';
    font-size: 1.2rem;
}

.success-details {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    font-weight: 500;
}

/* ========================================
   MINUTEUR COURS AUTOMATIQUE
   ======================================== */

.minuteur-cours-container {
    margin: 1.5rem 0;
    animation: slideInDown 0.5s ease-out;
}

.minuteur-cours-card {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.minuteur-cours-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    border-color: var(--primary-light);
}

.minuteur-cours-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.minuteur-cours-title {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.3em;
    font-weight: 700;
    color: var(--text-primary);
}

.minuteur-icon {
    font-size: 1.5em;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.minuteur-cours-classe {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.minuteur-cours-body {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.minuteur-temps-container {
    text-align: center;
}

.minuteur-temps-label {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.minuteur-temps-display {
    font-size: 3.5em;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
    letter-spacing: 0.1em;
}

.minuteur-temps-display.warning {
    background: linear-gradient(135deg, var(--warning), var(--danger));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: blink 1s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.minuteur-progress-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.minuteur-progress-bar {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.minuteur-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--accent));
    border-radius: 20px;
    transition: width 1s linear, background 0.3s ease;
    box-shadow: 0 0 12px rgba(52, 152, 219, 0.5);
}

.minuteur-progress-fill.ending {
    background: linear-gradient(90deg, var(--danger), var(--warning));
    box-shadow: 0 0 12px rgba(231, 76, 60, 0.5);
}

.minuteur-progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85em;
    color: var(--text-secondary);
    font-weight: 600;
}

.minuteur-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.8rem;
    background: var(--bg-tertiary);
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95em;
}

.minuteur-status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 12px var(--success);
    animation: pulse 2s ease-in-out infinite;
}

.minuteur-status.warning .minuteur-status-dot {
    background: var(--warning);
    box-shadow: 0 0 12px var(--warning);
}

.minuteur-status.danger .minuteur-status-dot {
    background: var(--danger);
    box-shadow: 0 0 12px var(--danger);
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .minuteur-temps-display {
        font-size: 2.5em;
    }
    
    .minuteur-cours-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

/* ========================================
   MODAL ÉDITEUR EMPLOI DU TEMPS
   ======================================== */

.edt-modal-bg {
    position: fixed !important;
    left: 0 !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    background: rgba(15, 23, 42, 0.9) !important;
    backdrop-filter: blur(8px) !important;
    z-index: 10030 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
}

.edt-modal-bg.show {
    opacity: 1 !important;
    visibility: visible !important;
}

.edt-modal {
    background: var(--bg-card) !important;
    border-radius: 20px !important;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5),
                0 0 0 2px rgba(255, 255, 255, 0.1) !important;
    padding: 0 !important;
    width: 95% !important;
    max-width: 1200px !important;
    max-height: 90vh !important;
    overflow: hidden !important;
    border: 2px solid var(--border-color) !important;
    transform: scale(0.9) translateY(30px) !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    display: flex !important;
    flex-direction: column !important;
}

.edt-modal-bg.show .edt-modal {
    transform: scale(1) translateY(0) !important;
}

.edt-modal-header {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 1.5rem 2rem !important;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary)) !important;
    border-bottom: 2px solid var(--border-color) !important;
}

.edt-modal-title {
    margin: 0 !important;
    font-size: 1.4em !important;
    font-weight: 700 !important;
    background: linear-gradient(135deg, var(--primary-light), var(--accent)) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
}

.edt-modal-close {
    background: rgba(255, 255, 255, 0.08) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 10px !important;
    width: 36px !important;
    height: 36px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.2em !important;
    color: var(--text-secondary) !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
}

.edt-modal-close:hover {
    background: rgba(231, 76, 60, 0.15) !important;
    color: #e74c3c !important;
    border-color: rgba(231, 76, 60, 0.3) !important;
    transform: rotate(90deg) !important;
}

.edt-modal-info {
    padding: 1rem 2rem !important;
    background: var(--bg-tertiary) !important;
    border-bottom: 1px solid var(--border-color) !important;
    color: var(--text-secondary) !important;
    font-size: 0.9em !important;
}

.edt-week-switcher {
    padding: 1rem 2rem !important;
    background: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border-color) !important;
    display: flex !important;
    align-items: center !important;
    gap: 1.5rem !important;
}

.edt-label {
    font-weight: 600 !important;
    color: var(--text-primary) !important;
}

.edt-radio-label {
    display: flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
    padding: 0.5rem 1rem !important;
    background: var(--bg-tertiary) !important;
    border: 2px solid var(--border-color) !important;
    border-radius: 10px !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    font-weight: 500 !important;
    color: var(--text-secondary) !important;
}

.edt-radio-label:hover {
    border-color: var(--primary-light) !important;
    background: var(--bg-hover) !important;
}

.edt-radio-label input[type="radio"]:checked + * {
    color: var(--primary-light) !important;
}

.edt-radio-label:has(input:checked) {
    background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
    border-color: var(--primary) !important;
    color: white !important;
}

.edt-grid {
    padding: 1.5rem 2rem !important;
    overflow: auto !important;
    flex: 1 !important;
}

.edt-periods-editor {
    margin-bottom: 1.5rem !important;
    background: var(--bg-tertiary) !important;
    padding: 1rem !important;
    border-radius: 12px !important;
    border: 1px solid var(--border-color) !important;
}

.edt-periods-label {
    display: block !important;
    font-weight: 600 !important;
    color: var(--text-primary) !important;
    margin-bottom: 0.5rem !important;
}

.edt-periods-input {
    width: 100% !important;
    background: var(--bg-card) !important;
    border: 2px solid var(--border-color) !important;
    border-radius: 10px !important;
    padding: 0.7rem 1rem !important;
    color: var(--text-primary) !important;
    font-size: 0.95em !important;
    transition: all 0.2s ease !important;
}

.edt-periods-input:focus {
    outline: none !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15) !important;
}

.edt-table {
    width: 100% !important;
    border-collapse: collapse !important;
    border: 2px solid var(--border-color) !important;
    border-radius: 12px !important;
    overflow: hidden !important;
}

.edt-th {
    border: 1px solid var(--border-color) !important;
    padding: 0.8rem !important;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary)) !important;
    color: var(--text-primary) !important;
    font-weight: 700 !important;
    text-align: center !important;
    font-size: 0.9em !important;
}

.edt-th-day {
    border: 1px solid var(--border-color) !important;
    padding: 0.8rem !important;
    background: var(--bg-tertiary) !important;
    color: var(--primary-light) !important;
    font-weight: 700 !important;
    text-align: left !important;
}

.edt-td {
    border: 1px solid var(--border-color) !important;
    padding: 0.5rem !important;
    background: var(--bg-card) !important;
    transition: background 0.2s ease !important;
}

.edt-td:hover {
    background: var(--bg-secondary) !important;
}

.edt-select {
    width: 100% !important;
    background: var(--bg-secondary) !important;
    border: 1.5px solid var(--border-color) !important;
    border-radius: 8px !important;
    padding: 0.5rem !important;
    color: var(--text-primary) !important;
    font-size: 0.9em !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
}

.edt-select:hover {
    border-color: var(--primary-light) !important;
}

.edt-select:focus {
    outline: none !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.1) !important;
}

.edt-input {
    width: 100% !important;
    background: var(--bg-tertiary) !important;
    border: 1.5px solid var(--border-color) !important;
    border-radius: 8px !important;
    padding: 0.4rem 0.6rem !important;
    color: var(--text-secondary) !important;
    font-size: 0.85em !important;
    margin-top: 0.3rem !important;
    transition: all 0.2s ease !important;
}

.edt-input:focus {
    outline: none !important;
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 2px rgba(0, 191, 174, 0.1) !important;
    color: var(--text-primary) !important;
}

.edt-input::placeholder {
    color: var(--text-muted) !important;
    font-style: italic !important;
}

.edt-modal-actions {
    padding: 1.5rem 2rem !important;
    background: var(--bg-secondary) !important;
    border-top: 2px solid var(--border-color) !important;
    display: flex !important;
    gap: 1rem !important;
    justify-content: flex-end !important;
}

.edt-btn-primary,
.edt-btn-secondary {
    padding: 0.8rem 1.8rem !important;
    border-radius: 10px !important;
    font-weight: 600 !important;
    font-size: 0.95em !important;
    cursor: pointer !important;
    border: none !important;
    transition: all 0.2s ease !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2) !important;
}

.edt-btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
    color: white !important;
}

.edt-btn-primary:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4) !important;
}

.edt-btn-secondary {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border: 2px solid var(--border-color) !important;
}

.edt-btn-secondary:hover {
    background: var(--bg-hover) !important;
    transform: translateY(-2px) !important;
}

/* Responsive */
@media (max-width: 768px) {
    .edt-modal {
        width: 98% !important;
        max-height: 95vh !important;
    }
    
    .edt-week-switcher {
        flex-direction: column !important;
        align-items: flex-start !important;
    }
    
    .edt-table {
        font-size: 0.85em !important;
    }
    
    .edt-th,
    .edt-td {
        padding: 0.5rem !important;
    }
}

/* ========================================
   SECTION COMPORTEMENT - MODAL APPRECIATION
   ======================================== */

.comportement-section {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.05), rgba(255, 152, 0, 0.05)) !important;
    border-radius: 16px !important;
    padding: 2rem !important;
    margin-bottom: 2rem !important;
    border: 2px solid rgba(255, 193, 7, 0.2) !important;
    box-shadow: 0 4px 16px rgba(255, 193, 7, 0.1) !important;
    position: relative !important;
    overflow: hidden !important;
}

.comportement-section::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 4px !important;
    background: linear-gradient(90deg, #ffc107, #ff9800) !important;
}

.comportement-section label {
    font-size: 1.1rem !important;
    font-weight: 600 !important;
    color: var(--text-primary) !important;
    margin-bottom: 1rem !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
}

.comportement-hint {
    font-size: 0.85rem !important;
    font-weight: 400 !important;
    color: var(--text-secondary) !important;
    font-style: italic !important;
    margin-left: auto !important;
}

.comportement-input-group {
    display: flex !important;
    gap: 1rem !important;
    align-items: stretch !important;
}

#textarea-comportement-modal {
    flex: 1 !important;
    min-height: 100px !important;
    padding: 1.2rem !important;
    border: 2px solid rgba(255, 193, 7, 0.3) !important;
    border-radius: 12px !important;
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    font-family: 'Inter', system-ui, -apple-system, sans-serif !important;
    font-size: 0.95rem !important;
    line-height: 1.6 !important;
    resize: vertical !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05) !important;
}

#textarea-comportement-modal:focus {
    outline: none !important;
    border-color: #ffc107 !important;
    box-shadow: 0 0 0 4px rgba(255, 193, 7, 0.2), 0 4px 16px rgba(0, 0, 0, 0.1) !important;
    transform: translateY(-1px) !important;
}

#textarea-comportement-modal::placeholder {
    color: var(--text-muted) !important;
    opacity: 0.6 !important;
}

/* Bouton micro */
.btn-micro {
    min-width: 60px !important;
    padding: 0.8rem 1.2rem !important;
    border: 2px solid rgba(255, 193, 7, 0.3) !important;
    border-radius: 12px !important;
    background: linear-gradient(135deg, #fff, #fffbf0) !important;
    color: #f57c00 !important;
    font-size: 1.5rem !important;
    cursor: pointer !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.2) !important;
    position: relative !important;
    overflow: hidden !important;
}

.btn-micro:hover {
    transform: translateY(-2px) scale(1.05) !important;
    border-color: #ffc107 !important;
    background: linear-gradient(135deg, #fffbf0, #fff9e6) !important;
    box-shadow: 0 4px 16px rgba(255, 193, 7, 0.3) !important;
}

.btn-micro:active {
    transform: translateY(0) scale(0.98) !important;
}

/* État enregistrement */
.btn-micro.recording {
    background: linear-gradient(135deg, #ff5252, #f44336) !important;
    color: white !important;
    border-color: #ff5252 !important;
    animation: pulse-recording 1.5s ease-in-out infinite !important;
}

@keyframes pulse-recording {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 82, 82, 0.7), 0 4px 16px rgba(255, 82, 82, 0.4) !important;
    }
    50% {
        box-shadow: 0 0 0 10px rgba(255, 82, 82, 0), 0 4px 16px rgba(255, 82, 82, 0.4) !important;
    }
}

.btn-micro.recording::after {
    content: '' !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    width: 8px !important;
    height: 8px !important;
    background: white !important;
    border-radius: 50% !important;
    animation: blink-recording 1s ease-in-out infinite !important;
}

@keyframes blink-recording {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.btn-micro:disabled {
    opacity: 0.5 !important;
    cursor: not-allowed !important;
}

/* Responsive comportement */
@media (max-width: 768px) {
    .comportement-input-group {
        flex-direction: column !important;
    }
    
    .btn-micro {
        width: 100% !important;
        padding: 1rem !important;
    }
    
    .comportement-hint {
        margin-left: 0 !important;
        margin-top: 0.3rem !important;
        display: block !important;
    }
}

/* ========================================
   MODAL DIAPORAMA COMPORTEMENTS
   ======================================== */

.modal-diaporama-comportement {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    animation: fadeIn 0.3s ease;
}

.diaporama-content {
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    border-radius: 24px;
    box-shadow: 0 32px 64px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Header */
.diaporama-header {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 3px solid rgba(255, 255, 255, 0.2);
}

.diaporama-info h2 {
    margin: 0 0 0.5rem 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.diaporama-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
    opacity: 0.95;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.diaporama-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.diaporama-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

/* Progress bar */
.diaporama-progress-bar {
    height: 6px;
    background: rgba(102, 126, 234, 0.1);
    position: relative;
    overflow: hidden;
}

.diaporama-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb);
    transition: width 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

/* Corps */
.diaporama-body {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    display: flex;
    gap: 2rem;
}

/* Carte élève */
.diaporama-eleve-card {
    flex-shrink: 0;
    width: 200px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    color: white;
    text-align: center;
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.eleve-avatar {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    border: 3px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.eleve-nom {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.3;
}

.eleve-numero {
    font-size: 0.85rem;
    opacity: 0.9;
}

/* Zone de saisie */
.diaporama-saisie {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.saisie-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.saisie-header label {
    font-size: 1.1rem;
    font-weight: 600;
    color: #334155;
}

.micro-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 20px;
    font-size: 0.85rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #94a3b8;
}

.status-dot.recording {
    background: #ef4444;
    animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
    }
    50% {
        opacity: 0.8;
        box-shadow: 0 0 0 6px rgba(239, 68, 68, 0);
    }
}

.status-text {
    font-weight: 500;
    color: #475569;
}

.diaporama-textarea {
    flex: 1;
    min-height: 250px;
    padding: 1.2rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    resize: none;
    transition: all 0.3s ease;
    background: #1e293b !important;
    color: #ffffff !important;
}

.diaporama-textarea::placeholder {
    color: rgba(255, 255, 255, 0.4) !important;
}

.diaporama-textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.saisie-hints {
    display: flex;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: #64748b;
}

.hint-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* Navigation */
.diaporama-navigation {
    padding: 1.5rem 2rem;
    background: #f8f9fa;
    border-top: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.nav-btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-prev {
    background: linear-gradient(135deg, #94a3b8, #64748b);
    color: white;
}

.nav-prev:hover:not(.disabled) {
    background: linear-gradient(135deg, #64748b, #475569);
    transform: translateX(-3px);
    box-shadow: 0 4px 12px rgba(100, 116, 139, 0.3);
}

.nav-next {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.nav-next:hover {
    background: linear-gradient(135deg, #764ba2, #667eea);
    transform: translateX(3px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.nav-next.completed {
    background: linear-gradient(135deg, #10b981, #059669);
}

.nav-next.completed:hover {
    background: linear-gradient(135deg, #059669, #047857);
}

.nav-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: #cbd5e1;
}

.nav-counter {
    display: flex;
    align-items: baseline;
    gap: 0.3rem;
    font-weight: 600;
}

.counter-current {
    font-size: 2rem;
    color: #667eea;
}

.counter-separator {
    font-size: 1.2rem;
    color: #94a3b8;
}

.counter-total {
    font-size: 1.2rem;
    color: #64748b;
}

/* Responsive */
@media (max-width: 768px) {
    .modal-diaporama-comportement {
        padding: 0;
    }
    
    .diaporama-content {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }
    
    .diaporama-body {
        flex-direction: column;
        padding: 1.5rem;
    }
    
    .diaporama-eleve-card {
        width: 100%;
        flex-direction: row;
        padding: 1rem;
        gap: 1rem;
        align-items: center;
    }
    
    .eleve-avatar {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .eleve-nom {
        font-size: 1.1rem;
        text-align: left;
    }
    
    .diaporama-navigation {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .nav-btn {
        flex: 1;
        min-width: 120px;
        justify-content: center;
    }
    
    .nav-counter {
        width: 100%;
        justify-content: center;
        order: -1;
    }
}

/* ========================================
   MODAL APPRÉCIATION GLOBALE DE CLASSE
   ======================================== */

/* Modal principal - fond overlay */
#modal-appreciation-classe {
  position: fixed !important;
  z-index: 999998 !important;
  left: 0 !important;
  top: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  background: rgba(15, 23, 42, 0.92) !important;
  backdrop-filter: blur(8px) !important;
  display: none !important;
  align-items: center !important;
  justify-content: center !important;
  opacity: 0 !important;
  visibility: hidden !important;
  transition: all 0.3s ease !important;
  pointer-events: none !important;
}

/* Activation du modal */
#modal-appreciation-classe[style*="display: flex"],
#modal-appreciation-classe.show {
  display: flex !important;
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: all !important;
}

/* Contenu du modal - fond BLANC avec bordure verte subtile */
#modal-appreciation-classe .modal-appreciation-content {
  background: #ffffff !important;
  border-radius: 20px !important;
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(39, 174, 96, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 1) !important;
  padding: 2.5rem !important;
  min-width: 600px !important;
  max-width: 90vw !important;
  width: 850px !important;
  max-height: 90vh !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  position: relative !important;
  transform: scale(0.9) translateY(30px) !important;
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
  opacity: 0 !important;
  border: 2px solid rgba(39, 174, 96, 0.2) !important;
}

/* Animation d'apparition */
#modal-appreciation-classe[style*="display: flex"] .modal-appreciation-content,
#modal-appreciation-classe.show .modal-appreciation-content {
  transform: scale(1) translateY(0) !important;
  opacity: 1 !important;
  animation: modalClasseEnter 0.5s cubic-bezier(0.165, 0.84, 0.44, 1) forwards !important;
}

@keyframes modalClasseEnter {
  0% {
    transform: scale(0.9) translateY(30px) !important;
    opacity: 0 !important;
  }
  100% {
    transform: scale(1) translateY(0) !important;
    opacity: 1 !important;
  }
}

/* Scrollbar */
#modal-appreciation-classe .modal-appreciation-content::-webkit-scrollbar {
  width: 8px !important;
}

#modal-appreciation-classe .modal-appreciation-content::-webkit-scrollbar-track {
  background: rgba(39, 174, 96, 0.05) !important;
  border-radius: 10px !important;
}

#modal-appreciation-classe .modal-appreciation-content::-webkit-scrollbar-thumb {
  background: rgba(39, 174, 96, 0.3) !important;
  border-radius: 10px !important;
  transition: all 0.3s ease !important;
}

#modal-appreciation-classe .modal-appreciation-content::-webkit-scrollbar-thumb:hover {
  background: rgba(39, 174, 96, 0.5) !important;
}

/* Header - bordure verte en haut uniquement */
#modal-appreciation-classe .modal-appreciation-header {
  background: linear-gradient(135deg, rgba(39, 174, 96, 0.06), rgba(46, 204, 113, 0.06)) !important;
  border-bottom: 1px solid rgba(39, 174, 96, 0.15) !important;
  padding: 1.5rem 2rem !important;
  margin: -2.5rem -2.5rem 2rem -2.5rem !important;
  border-radius: 18px 18px 0 0 !important;
  position: relative !important;
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
}

/* Bande verte en haut du header */
#modal-appreciation-classe .modal-appreciation-header::before {
  content: '' !important;
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  height: 4px !important;
  background: linear-gradient(90deg, #27ae60, #2ecc71, #27ae60) !important;
  background-size: 200% 100% !important;
  border-radius: 18px 18px 0 0 !important;
  animation: gradientShiftGreen 3s ease-in-out infinite !important;
}

@keyframes gradientShiftGreen {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Titre avec texte vert */
#modal-appreciation-classe .modal-appreciation-header h2 {
  color: #1a3557 !important;
  font-size: 1.75rem !important;
  margin: 0 !important;
  font-weight: 700 !important;
  display: flex !important;
  align-items: center !important;
  gap: 0.5rem !important;
  background: none !important;
  -webkit-text-fill-color: #1a3557 !important;
  text-shadow: none !important;
}

/* Body - texte NOIR sur fond BLANC */
#modal-appreciation-classe .modal-appreciation-body {
  color: #1a3557 !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 1.5rem !important;
}

#modal-appreciation-classe .modal-appreciation-body label {
  color: #1a3557 !important;
  font-weight: 600 !important;
}

/* Textarea - BLANC avec bordure verte au focus */
#textarea-appreciation-classe {
  width: 100% !important;
  min-height: 280px !important;
  padding: 1.2em !important;
  border: 2px solid #d1d5db !important;
  border-radius: 12px !important;
  font-size: 1.05rem !important;
  font-family: 'Segoe UI', Arial, sans-serif !important;
  line-height: 1.7 !important;
  resize: vertical !important;
  background: #ffffff !important;
  color: #1a3557 !important;
  transition: all 0.3s ease !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05) !important;
}

#textarea-appreciation-classe:focus {
  outline: none !important;
  border-color: #27ae60 !important;
  box-shadow: 
    0 0 0 3px rgba(39, 174, 96, 0.12),
    0 2px 8px rgba(39, 174, 96, 0.15) !important;
  background: #ffffff !important;
}

#textarea-appreciation-classe::placeholder {
  color: rgba(26, 53, 87, 0.35) !important;
}

/* Boutons - couleurs propres, sans conflit */
#modal-appreciation-classe .modal-appreciation-body .btn-sauvegarder:hover {
  background: #229954 !important;
  box-shadow: 0 4px 12px rgba(39, 174, 96, 0.4) !important;
  transform: translateY(-2px) !important;
}

#modal-appreciation-classe .modal-appreciation-body .btn-copier:hover {
  background: #2980b9 !important;
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4) !important;
  transform: translateY(-2px) !important;
}

#modal-appreciation-classe .modal-appreciation-body .btn-regenerer:hover {
  background: #8e44ad !important;
  box-shadow: 0 4px 12px rgba(155, 89, 182, 0.4) !important;
  transform: translateY(-2px) !important;
}

#modal-appreciation-classe .modal-appreciation-body .btn-fermer:hover {
  background: #636e72 !important;
  box-shadow: 0 4px 12px rgba(127, 140, 141, 0.4) !important;
  transform: translateY(-2px) !important;
}

#modal-appreciation-classe .modal-appreciation-body button {
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
}

#modal-appreciation-classe .modal-appreciation-body button:active {
  transform: translateY(0) !important;
}

/* Bouton de fermeture (X) - position absolue */
#modal-appreciation-classe .modal-close {
  position: absolute !important;
  top: 20px !important;
  right: 20px !important;
  background: rgba(220, 38, 38, 0.1) !important;
  color: #dc2626 !important;
  border: 2px solid rgba(220, 38, 38, 0.2) !important;
  width: 40px !important;
  height: 40px !important;
  border-radius: 50% !important;
  font-size: 1.5rem !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  line-height: 1 !important;
  font-weight: 400 !important;
  padding: 0 !important;
}

#modal-appreciation-classe .modal-close:hover {
  background: #dc2626 !important;
  color: white !important;
  transform: rotate(90deg) scale(1.15) !important;
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.35) !important;
  border-color: #dc2626 !important;
}

/* Responsive */
@media (max-width: 768px) {
  #modal-appreciation-classe .modal-appreciation-content {
    width: 95vw !important;
    min-width: unset !important;
    padding: 1.5rem !important;
  }
  
  #modal-appreciation-classe .modal-appreciation-header {
    padding: 1.2rem 1.5rem !important;
    margin: -1.5rem -1.5rem 1.5rem -1.5rem !important;
  }
  
  #modal-appreciation-classe .modal-appreciation-header h2 {
    font-size: 1.4rem !important;
  }
  
  #textarea-appreciation-classe {
    min-height: 220px !important;
    font-size: 1rem !important;
  }
  
  #modal-appreciation-classe .modal-appreciation-body > div:last-child {
    flex-direction: column !important;
  }
  
  #modal-appreciation-classe .modal-appreciation-body > div:last-child > div {
    width: 100% !important;
  }
  
  #modal-appreciation-classe .modal-appreciation-body button {
    width: 100% !important;
    margin: 0.3em 0 !important;
  }
}

/* ========================================
   SECTION MODIFICATION DE DEVOIR
   ======================================== */

#section-modif-devoir {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin: 0 2rem 2rem 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    max-width: 900px;
}

#section-modif-devoir h3 {
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modif-devoir-form-group {
    margin-bottom: 1.5rem;
}

.modif-devoir-form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.modif-devoir-form-group select,
.modif-devoir-form-group input[type="text"],
.modif-devoir-form-group input[type="number"],
.modif-devoir-form-group input[type="date"] {
    width: 100%;
    max-width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-family: inherit;
    background: var(--bg-input);
    color: var(--text-primary);
    transition: var(--transition);
}

.modif-devoir-form-group select:focus,
.modif-devoir-form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--bg-secondary);
}

/* Container des exercices */
#modifBaremesContainer {
    margin-top: 1rem;
}

#modifExercicesList {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.exercice-modif-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.exercice-modif-item:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.exercice-modif-item label {
    min-width: 100px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    font-size: var(--font-size-sm);
}

.exercice-modif-item input[type="number"] {
    width: 100px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    transition: var(--transition);
}

.exercice-modif-item input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.exercice-modif-item button {
    background: linear-gradient(135deg, var(--danger) 0%, var(--danger-dark) 100%);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.exercice-modif-item button:hover {
    background: linear-gradient(135deg, var(--danger-dark) 0%, #b91c1c 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.exercice-modif-item button:active {
    transform: translateY(0);
}

/* Bouton d'ajout d'exercice */
#modifBaremesContainer button[onclick*="ajouterExerciceModif"] {
    background: linear-gradient(135deg, var(--success) 0%, var(--success-dark) 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

#modifBaremesContainer button[onclick*="ajouterExerciceModif"]:hover {
    background: linear-gradient(135deg, var(--success-dark) 0%, #15803d 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Actions du formulaire */
#section-modif-devoir > div[style*="text-align: center"] {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

#section-modif-devoir > div[style*="text-align: center"] button {
    flex: 1;
    max-width: 200px;
    padding: 0.875rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    box-shadow: var(--shadow);
}

#section-modif-devoir > div[style*="text-align: center"] button:first-child {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
}

#section-modif-devoir > div[style*="text-align: center"] button:first-child:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

#section-modif-devoir > div[style*="text-align: center"] button:last-child {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

#section-modif-devoir > div[style*="text-align: center"] button:last-child:hover {
    background: var(--bg-hover);
}

/* Messages */
#messageModifDevoir {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    font-size: var(--font-size-sm);
    transition: var(--transition);
}

#messageModifDevoir:not(:empty) {
    border: 1px solid;
    box-shadow: var(--shadow-sm);
}

/* Responsive */
@media (max-width: 768px) {
    #section-modif-devoir {
        margin: 0 1rem 1rem 1rem;
        padding: 1.5rem;
    }
    
    .exercice-modif-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .exercice-modif-item input[type="number"] {
        width: 100%;
    }
    
    #section-modif-devoir > div[style*="text-align: center"] {
        flex-direction: column;
    }
    
    #section-modif-devoir > div[style*="text-align: center"] button {
        max-width: 100%;
    }
}

/* ========================================
   PAGE D'ACCUEIL - ACCÈS RAPIDE - THÈME MODERNE
   ======================================== */

.welcome-container {
  max-width: 1400px;
  margin: 2rem auto;
  padding: 2rem;
}

.welcome-header {
  text-align: center;
  margin-bottom: 3.5rem;
  position: relative;
}

.welcome-header h1 {
  font-size: 3rem;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border: none;
  padding: 0;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.welcome-subtitle {
  font-size: 1.3rem;
  color: #94a3b8;
  margin: 0;
  font-weight: 500;
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.75rem;
  margin-bottom: 4rem;
}

.stat-card-home {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.9) 100%);
  backdrop-filter: blur(12px);
  border: 2px solid rgba(59, 130, 246, 0.2);
  border-radius: 20px;
  padding: 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  box-shadow: 
    0 8px 24px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(59, 130, 246, 0.1) inset;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.stat-card-home::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.stat-card-home:hover {
  transform: translateY(-6px);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 
    0 16px 40px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(59, 130, 246, 0.3) inset,
    0 0 40px rgba(59, 130, 246, 0.2);
}

.stat-card-home:hover::before {
  opacity: 1;
}

.stat-icon {
  font-size: 3rem;
  line-height: 1;
  filter: drop-shadow(0 4px 12px rgba(59, 130, 246, 0.4));
}

.stat-content {
  flex: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: #94a3b8;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.quick-actions {
  margin-bottom: 3rem;
}

.quick-actions h2 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.8rem;
  border: none;
  padding: 0;
}

.actions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.action-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.85) 0%, rgba(15, 23, 42, 0.85) 100%);
  backdrop-filter: blur(12px);
  border: 2px solid rgba(59, 130, 246, 0.2);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 8px 24px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(59, 130, 246, 0.1) inset;
  position: relative;
  overflow: hidden;
}

.action-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  transition: left 0.5s ease;
}

.action-card:hover::before {
  left: 100%;
}

.action-card:hover {
  transform: translateY(-8px);
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 
    0 20px 50px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(59, 130, 246, 0.4) inset,
    0 0 60px rgba(59, 130, 246, 0.3);
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.95) 100%);
}

.action-icon {
  font-size: 3rem;
  line-height: 1;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 4px 12px rgba(59, 130, 246, 0.5));
  transition: transform 0.3s ease;
}

.action-card:hover .action-icon {
  transform: scale(1.15) rotateY(10deg);
}

.action-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #f8fafc;
  letter-spacing: 0.01em;
}

.action-desc {
  font-size: 0.9rem;
  color: #94a3b8;
  line-height: 1.6;
}

.search-tip {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(245, 158, 11, 0.15) 100%);
  backdrop-filter: blur(12px);
  border-left: 4px solid rgba(251, 191, 36, 0.6);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  align-items: start;
  gap: 1.5rem;
  box-shadow: 
    0 8px 24px rgba(0, 0, 0, 0.2),
    0 0 0 1px rgba(251, 191, 36, 0.1) inset;
}

.tip-icon {
  font-size: 2.5rem;
  line-height: 1;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 12px rgba(251, 191, 36, 0.4));
}

.tip-content {
  flex: 1;
  color: #fbbf24;
}

.tip-content strong {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: #fbbf24;
}

.tip-content kbd {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.9) 100%);
  border: 2px solid rgba(59, 130, 246, 0.4);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  font-family: 'SF Mono', 'Monaco', 'Cascadia Code', monospace;
  font-weight: 700;
  color: #3b82f6;
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(59, 130, 246, 0.2) inset;
  letter-spacing: 0.05em;
}

/* Responsive - Page d'accueil */
@media (max-width: 768px) {
  .welcome-header h1 {
    font-size: 2rem;
  }
  
  .quick-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .stat-card-home {
    padding: 1rem;
  }
  
  .stat-icon {
    font-size: 2rem;
  }
  
  .stat-value {
    font-size: 1.5rem;
  }
  
  .actions-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .action-card {
    padding: 1.5rem;
  }
}