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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --text-color: #333;
    --text-light: #7f8c8d;
    --bg-color: #f9f9f9;
    --card-bg: #fff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    text-decoration: none;
    color: white;
}

.logo span {
    color: #f1c40f;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-menu a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-avatar {
    width: 35px;
    height: 35px;
    background-color: var(--light-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--primary-color);
}

.pending-count {
    position: relative;
}

.pending-count .badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background-color: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
}

.login-btn {
    background-color: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.login-btn:hover {
    background-color: #c0392b;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 20px;
}

.page-header {
    text-align: center;
    margin-bottom: 2rem;
}

.page-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* Niveaux et Chapitres */
.levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.level-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.level-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.level-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary-color);
}

.chapters-list {
    list-style: none;
}

.chapter-item {
    margin-bottom: 1rem;
    padding: 1rem;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.chapter-item:hover {
    background-color: #d4e6f1;
}

.chapter-link {
    text-decoration: none;
    color: var(--text-color);
    display: block;
}

.chapter-title {
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.chapter-meta {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Contenu d'un chapitre */
.chapter-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.chapter-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.chapter-title-large {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.chapter-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.document-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    margin-bottom: 0.5rem;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.document-item:hover {
    background-color: #d4e6f1;
}

.document-icon {
    font-size: 1.5rem;
    margin-right: 1rem;
    color: var(--secondary-color);
}

.document-info {
    flex: 1;
}

.document-title {
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.document-meta {
    font-size: 0.85rem;
    color: var(--text-light);
}

.document-link {
    color: var(--secondary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.document-link:hover {
    text-decoration: underline;
}

.class-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
    color: white;
    margin-right: 0.5rem;
}

.default-badge {
    background-color: var(--primary-color);
}

/* Formulaires */
.form-container {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 0 auto;
}

.form-title {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

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

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.form-submit {
    background-color: var(--secondary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.form-submit:hover {
    background-color: #2980b9;
}

.form-error {
    color: var(--danger-color);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.form-success {
    color: var(--success-color);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* Boutons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: var(--light-color);
    color: var(--text-color);
}

.btn-secondary:hover {
    background-color: #bdc3c7;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #219653;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #d35400;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
}

/* Tableaux */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 500;
}

.table tr:hover {
    background-color: var(--light-color);
}

.table-actions {
    display: flex;
    gap: 0.5rem;
}

/* Alertes */
.alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Footer */
.footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .levels-grid {
        grid-template-columns: 1fr;
    }
    
    .chapter-actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn-group {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn-group .btn {
        width: 100%;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* Couleurs des classes */
.class-color-4A { background-color: #FF5733; }
.class-color-4B { background-color: #33FF57; }
.class-color-4C { background-color: #3357FF; }
.class-color-4D { background-color: #F3FF33; }
.class-color-4E { background-color: #FF33F3; }
.class-color-4F { background-color: #33FFF3; }
.class-color-4G { background-color: #8A2BE2; }
.class-color-3A { background-color: #FF6B35; }
.class-color-3B { background-color: #4ECDC4; }
.class-color-3C { background-color: #45B7D1; }
.class-color-3D { background-color: #96CEB4; }
.class-color-3E { background-color: #FFEAA7; }
.class-color-3F { background-color: #DDA0DD; }
.class-color-5A { background-color: #98D8C8; }
.class-color-5B { background-color: #F7DC6F; }
.class-color-5C { background-color: #BB8FCE; }
.class-color-5D { background-color: #85C1E2; }
.class-color-5E { background-color: #F8C471; }
.class-color-5F { background-color: #82E0AA; }

/* Style pour les documents en attente */
.pending-document {
    opacity: 0.8;
    border-left: 4px solid var(--warning-color);
}

/* Style pour les documents rejetés */
.rejected-document {
    opacity: 0.6;
    border-left: 4px solid var(--danger-color);
}

/* Style pour les icônes de fichier */
.file-icon {
    font-size: 1.2rem;
    margin-right: 0.5rem;
}

.file-icon-pdf { color: #e74c3c; }
.file-icon-jpg { color: #3498db; }
.file-icon-png { color: #27ae60; }

/* Style pour les badges de statut */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: bold;
}

.status-pending { background-color: #f39c12; color: white; }
.status-approved { background-color: #27ae60; color: white; }
.status-rejected { background-color: #e74c3c; color: white; }

/* Style pour le drag and drop */
.drag-area {
    border: 2px dashed #ccc;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 1rem;
}

.drag-area:hover {
    border-color: var(--secondary-color);
    background-color: #f0f8ff;
}

.drag-area.active {
    border-color: var(--success-color);
    background-color: #e8f5e9;
}

.drag-area .icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.drag-area .text {
    color: var(--text-light);
}

/* Style pour la liste des documents à réorganiser */
.sortable-list {
    list-style: none;
}

.sortable-item {
    padding: 1rem;
    margin-bottom: 0.5rem;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    cursor: move;
    transition: var(--transition);
}

.sortable-item:hover {
    background-color: #d4e6f1;
}

.sortable-item .handle {
    cursor: move;
    margin-right: 1rem;
    color: var(--text-light);
}

/* Style pour le modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.modal-title {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
}

.modal-body {
    margin-bottom: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

/* Style pour les notifications */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--card-bg);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    z-index: 3000;
    animation: slideIn 0.5s ease forwards;
}

.notification.success { border-left: 4px solid var(--success-color); }
.notification.error { border-left: 4px solid var(--danger-color); }
.notification.warning { border-left: 4px solid var(--warning-color); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Style pour le loader */
.loader {
    display: none;
    text-align: center;
    padding: 2rem;
}

.loader.active {
    display: block;
}

.loader .spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-left-color: var(--secondary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}