:root {
            /* Palette de couleurs raffinée */
            --primary: #4f46e5;
            --primary-light: #6366f1;
            --primary-dark: #3730a3;
            --primary-gradient: linear-gradient(135deg, #4f46e5, #6366f1);
            --secondary: #10b981;
            --secondary-light: #34d399;
            --secondary-dark: #059669;
            --accent: #f97316;
            --accent-light: #fb923c;
            --accent-dark: #ea580c;
            --accent-gradient: linear-gradient(135deg, #f97316, #fb923c);
            
            /* Neutrals */
            --white: #ffffff;
            --light: #f9fafb;
            --light-alt: #f1f5f9;
            --light-hover: #e2e8f0;
            --dark: #1e293b;
            --dark-alt: #334155;
            --dark-light: #475569;
            --text: #1e293b;
            --text-light: #64748b;
            --text-lighter: #94a3b8;
            
            /* UI Elements */
            --glass: rgba(255, 255, 255, 0.7);
            --glass-dark: rgba(0, 0, 0, 0.03);
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
            --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --shadow-focus: 0 0 0 3px rgba(79, 70, 229, 0.15);
            --shadow-hover: 0 10px 20px -5px rgba(0, 0, 0, 0.08);
            --border: 1px solid rgba(203, 213, 225, 0.8);
            --border-dark: 1px solid rgba(30, 41, 59, 0.1);
            
            /* Transitions & animations */
            --transition-fast: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-slow: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
            
            /* Radius */
            --radius-sm: 0.375rem;
            --radius: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --radius-full: 9999px;
            
            /* Spacing */
            --space-1: 0.25rem;
            --space-2: 0.5rem;
            --space-3: 0.75rem;
            --space-4: 1rem;
            --space-5: 1.25rem;
            --space-6: 1.5rem;
            --space-8: 2rem;
            --space-10: 2.5rem;
            --space-12: 3rem;
            --space-16: 4rem;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            background-color: var(--light);
            color: var(--text);
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
            transition: var(--transition);
            min-height: 100vh;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Poppins', sans-serif;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        button {
            font-family: 'Inter', sans-serif;
            border: none;
            background: none;
            cursor: pointer;
            transition: var(--transition);
        }

        button:focus, input:focus, select:focus {
            outline: none;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        /* Layout */
        .container {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 var(--space-6);
        }

        .section {
            padding: var(--space-12) 0;
        }

        /* Header */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow);
            transition: var(--transition);
            padding: var(--space-4) 0;
            border-bottom: var(--border);
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .header-left {
            display: flex;
            align-items: center;
        }

        .logo-container {
            display: flex;
            align-items: center;
            gap: var(--space-3);
        }

        .logo-icon {
            width: 2.5rem;
            height: 2.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-gradient);
            border-radius: var(--radius);
            color: white;
            box-shadow: var(--shadow);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
        }

        .logo {
            font-family: 'Poppins', sans-serif;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

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

        .header-right {
            display: flex;
            align-items: center;
            gap: var(--space-4);
        }

        .header-actions {
            display: flex;
            gap: var(--space-3);
            align-items: center;
        }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: var(--space-3) var(--space-5);
            border-radius: var(--radius-full);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
            gap: var(--space-2);
            position: relative;
            overflow: hidden;
        }

        .button::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.2);
            opacity: 0;
            transition: var(--transition);
        }

        .button:hover::after {
            opacity: 1;
        }

        .button.primary {
            background: var(--primary-gradient);
            color: white;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
        }

        .button.primary:hover {
            box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
            transform: translateY(-2px);
        }

        .button.secondary {
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
        }

        .button.secondary:hover {
            background: rgba(79, 70, 229, 0.15);
        }

        .button.ghost {
            background: transparent;
            color: var(--text-light);
        }

        .button.ghost:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, 0.05);
        }

        .button.icon {
            width: 2.5rem;
            height: 2.5rem;
            padding: 0;
            border-radius: var(--radius-full);
        }

        /* Hero Section */
        .hero {
            padding: var(--space-10) 0 var(--space-8);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 30% 20%, rgba(79, 70, 229, 0.05), transparent 25%),
                        radial-gradient(circle at 70% 60%, rgba(16, 185, 129, 0.05), transparent 25%);
            z-index: -1;
        }

        .hero-title {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: var(--space-4);
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        .hero-title span {
            color: var(--primary);
            position: relative;
            display: inline-block;
        }

        .hero-title span::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 0.25rem;
            background: var(--accent-gradient);
            border-radius: var(--radius-full);
            z-index: -1;
            opacity: 0.5;
        }

        .hero-subtitle {
            font-size: 1.125rem;
            color: var(--text-light);
            max-width: 800px;
            margin: 0 auto var(--space-8);
        }

        /* Filters */
        .filters-container {
            background-color: var(--white);
            border-radius: var(--radius-lg);
            padding: var(--space-6);
            box-shadow: var(--shadow-md);
            margin-bottom: var(--space-8);
            border: var(--border);
        }

        .filters-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--space-4);
        }

        .filter-group {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }

        .filter-label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: var(--space-2);
        }

        .filter-label svg {
            color: var(--primary);
        }

        .filter-select {
            width: 100%;
            padding: var(--space-3) var(--space-4);
            border-radius: var(--radius);
            border: var(--border);
            background-color: var(--light-alt);
            font-size: 0.9rem;
            color: var(--text);
            transition: var(--transition);
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236c7793' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            background-size: 1rem;
        }

        .filter-select:focus {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-focus);
        }

        .filter-actions {
            display: flex;
            justify-content: flex-end;
            margin-top: var(--space-6);
            gap: var(--space-3);
        }

        /* Table */
        .table-container {
            background-color: var(--white);
            border-radius: var(--radius-lg);
            padding: var(--space-6);
            box-shadow: var(--shadow-md);
            border: var(--border);
            margin-bottom: var(--space-8);
            overflow-x: auto;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.95rem;
        }

        .data-table th {
            background-color: var(--light-alt);
            color: var(--text);
            font-weight: 600;
            padding: var(--space-3) var(--space-4);
            border-bottom: 2px solid var(--light-hover);
            position: relative;
            cursor: pointer;
            transition: var(--transition-fast);
        }

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

        .data-table th.sorted {
            background-color: rgba(79, 70, 229, 0.1);
            color: var(--primary);
        }

        .data-table th.sorted::after {
            content: '↓';
            margin-left: var(--space-2);
            font-size: 0.8rem;
        }

        .data-table th.sorted.asc::after {
            content: '↑';
        }

        .data-table td {
            padding: var(--space-3) var(--space-4);
            border-bottom: 1px solid var(--light-alt);
            color: var(--text-light);
        }

        .data-table tbody tr {
            transition: var(--transition-fast);
        }

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

        .data-table tbody tr:last-child td {
            border-bottom: none;
        }

        /* Pagination */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: var(--space-2);
            margin-top: var(--space-6);
        }

        .pagination-item {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: var(--radius);
            font-weight: 500;
            transition: var(--transition);
            background-color: var(--white);
            border: var(--border);
            color: var(--text);
        }

        .pagination-item:hover {
            background-color: var(--light-alt);
        }

        .pagination-item.active {
            background-color: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        .pagination-item.disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .pagination-item svg {
            width: 16px;
            height: 16px;
        }

        /* Subject detail */
        .subject-detail {
            background-color: var(--white);
            border-radius: var(--radius-lg);
            padding: var(--space-6);
            box-shadow: var(--shadow-md);
            border: var(--border);
            margin-bottom: var(--space-8);
            display: none;
        }

        .subject-detail-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--space-4);
            padding-bottom: var(--space-4);
            border-bottom: 1px solid var(--light-alt);
        }

        .subject-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
        }

        .subject-info {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-2) var(--space-4);
            margin-bottom: var(--space-4);
        }

        .subject-info-item {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            font-size: 0.9rem;
            color: var(--text-light);
            padding: var(--space-1) var(--space-3);
            background-color: var(--light-alt);
            border-radius: var(--radius-full);
        }

        .subject-text {
            margin-bottom: var(--space-4);
            line-height: 1.7;
        }

        .subject-draft {
            background-color: var(--light-alt);
            border-radius: var(--radius);
            padding: var(--space-4);
            margin-bottom: var(--space-4);
        }

        .draft-title {
            font-weight: 600;
            margin-bottom: var(--space-2);
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: var(--space-2);
        }

        .subject-actions {
            display: flex;
            gap: var(--space-3);
            justify-content: flex-end;
        }

        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: var(--space-1) var(--space-3);
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
        }

        .badge-primary {
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
        }

        .badge-secondary {
            background: rgba(16, 185, 129, 0.1);
            color: var(--secondary);
        }

        .badge-accent {
            background: rgba(249, 115, 22, 0.1);
            color: var(--accent);
        }

        /* Quick Access */
        .quick-access {
            position: fixed;
            bottom: var(--space-10);
            right: var(--space-8);
            display: flex;
            flex-direction: column;
            gap: var(--space-3);
            z-index: 90;
        }

        .quick-btn {
            width: 3.5rem;
            height: 3.5rem;
            border-radius: var(--radius-full);
            background: white;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            position: relative;
            opacity: 0;
            animation: fadeIn 0.5s forwards;
            animation-delay: 1s;
            transform: translateY(20px);
        }

        .quick-btn:nth-child(2) {
            animation-delay: 1.1s;
        }

        .quick-btn:nth-child(3) {
            animation-delay: 1.2s;
        }

        @keyframes fadeIn {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .quick-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 20px rgba(0, 0, 0, 0.1);
            background: var(--primary);
            color: white;
        }

        .quick-tooltip {
            position: absolute;
            right: calc(100% + var(--space-3));
            top: 50%;
            transform: translateY(-50%);
            background: var(--dark);
            color: white;
            padding: var(--space-2) var(--space-4);
            border-radius: var(--radius);
            font-size: 0.85rem;
            white-space: nowrap;
            pointer-events: none;
            opacity: 0;
            transition: var(--transition);
            box-shadow: var(--shadow-md);
        }

        .quick-tooltip::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -5px;
            transform: translateY(-50%);
            border-width: 6px 0 6px 6px;
            border-style: solid;
            border-color: transparent transparent transparent var(--dark);
        }

        .quick-btn:hover .quick-tooltip {
            opacity: 1;
            transform: translateY(-50%) translateX(-5px);
        }

        /* Empty state */
        .empty-state {
            text-align: center;
            padding: var(--space-12) 0;
            display: none;
        }

        .empty-icon {
            width: 5rem;
            height: 5rem;
            background: var(--light-alt);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-6);
            color: var(--primary-light);
        }

        .empty-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--space-4);
            color: var(--text);
        }

        .empty-description {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 450px;
            margin: 0 auto var(--space-8);
        }

        /* Loading state */
        .loading-state {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.8);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            backdrop-filter: blur(3px);
            -webkit-backdrop-filter: blur(3px);
        }

        .loading-spinner {
            width: 3rem;
            height: 3rem;
            border-radius: 50%;
            border: 3px solid var(--light-alt);
            border-top-color: var(--primary);
            animation: spin 1s linear infinite;
        }

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

        /* Scroll progress */
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary-gradient);
            z-index: 101;
            transition: width 0.2s ease;
        }

        /* Responsive */
        @media (max-width: 1200px) {
            .hero-title {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 991px) {
            .hero-title {
                font-size: 1.8rem;
            }
            
            .hero-subtitle {
                font-size: 1rem;
            }
            
            .filters-grid {
                grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 var(--space-4);
            }
            
            .header-inner {
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
                gap: var(--space-4);
            }
            
            .header-left {
                width: auto;
                justify-content: flex-start;
            }
            
            .header-right {
                width: auto;
            }
            
            .tagline {
                display: none;
            }
            
            .header-actions {
                gap: var(--space-2);
            }
            
            .button.secondary span {
                display: none;
            }
            
            .button svg {
                margin: 0;
            }
            
            .button.primary {
                padding: var(--space-2) var(--space-3);
                font-size: 0.8rem;
            }
            
            .button.secondary {
                width: 2.5rem;
                height: 2.5rem;
                padding: 0;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            
            .hero-title {
                font-size: 1.6rem;
            }
            
            .filters-grid {
                grid-template-columns: 1fr;
            }
            
            .filter-actions {
                flex-direction: column;
                gap: var(--space-2);
            }
            
            .quick-access {
                bottom: var(--space-8);
                right: var(--space-4);
            }
            
            .quick-btn {
                width: 3rem;
                height: 3rem;
            }
            
            .quick-tooltip {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .logo-icon {
                width: 2rem;
                height: 2rem;
            }
            
            .logo {
                font-size: 1.2rem;
            }
            
            .tagline {
                font-size: 0.75rem;
            }
            
            .hero-title {
                font-size: 1.4rem;
            }
        }

        /* Dark mode */
        .dark-mode {
            background-color: var(--dark);
            color: white;
        }

        .dark-mode header {
            background-color: rgba(30, 41, 59, 0.95);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .dark-mode .logo {
            color: white;
        }

        .dark-mode .tagline {
            color: rgba(255, 255, 255, 0.7);
        }

        .dark-mode h1, .dark-mode h2, .dark-mode h3, .dark-mode h4, .dark-mode h5, .dark-mode h6 {
            color: white;
        }

        .dark-mode .filters-container,
        .dark-mode .table-container,
        .dark-mode .subject-detail {
            background-color: var(--dark-alt);
            border-color: rgba(255, 255, 255, 0.05);
        }

        .dark-mode .filter-select {
            background-color: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.1);
            color: white;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23b1b1b1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
        }

        .dark-mode .data-table th {
            background-color: rgba(255, 255, 255, 0.05);
            color: white;
            border-bottom-color: rgba(255, 255, 255, 0.1);
        }

        .dark-mode .data-table th:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .dark-mode .data-table th.sorted {
            background-color: rgba(79, 70, 229, 0.2);
            color: #a5b4fc;
        }

        .dark-mode .data-table td {
            border-bottom-color: rgba(255, 255, 255, 0.05);
            color: rgba(255, 255, 255, 0.7);
        }

        .dark-mode .data-table tbody tr:hover {
            background-color: rgba(255, 255, 255, 0.05);
        }

        .dark-mode .pagination-item {
            background-color: var(--dark-alt);
            border-color: rgba(255, 255, 255, 0.05);
            color: white;
        }

        .dark-mode .pagination-item:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .dark-mode .subject-draft,
        .dark-mode .subject-info-item {
            background-color: rgba(255, 255, 255, 0.05);
        }

        .dark-mode .loading-state {
            background: rgba(30, 41, 59, 0.8);
        }

        .dark-mode .loading-spinner {
            border-color: rgba(255, 255, 255, 0.1);
            border-top-color: var(--primary-light);
        }

        .dark-mode .quick-btn {
            background: var(--dark-alt);
            color: white;
        }

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

        .fade-up {
            opacity: 0;
            animation: fadeUp 0.5s ease forwards;
        }

        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }

        /* Expanded row style */
        .expanded-row {
            background-color: var(--light-alt);
            animation: fadeIn 0.3s ease;
        }

        .dark-mode .expanded-row {
            background-color: rgba(255, 255, 255, 0.05);
        }

        .expanded-content {
            padding: var(--space-4);
            margin: 0 var(--space-4);
            border-bottom: 1px solid var(--light-hover);
        }

        .dark-mode .expanded-content {
            border-bottom-color: rgba(255, 255, 255, 0.05);
        }

        .detail-label {
            font-weight: 600;
            color: var(--primary);
            margin-bottom: var(--space-2);
        }

        .dark-mode .detail-label {
            color: #a5b4fc;
        }

        .action-button {
            background-color: var(--light);
            border: var(--border);
            padding: var(--space-1) var(--space-3);
            border-radius: var(--radius);
            font-size: 0.8rem;
            color: var(--text);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: var(--space-1);
        }

        .action-button:hover {
            background-color: var(--light-hover);
            color: var(--primary);
        }

        .dark-mode .action-button {
            background-color: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8);
        }

        .dark-mode .action-button:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: white;
        }

        /* Tooltip */
        .tooltip {
            position: relative;
            display: inline-block;
        }

        .tooltip .tooltip-text {
            visibility: hidden;
            width: max-content;
            max-width: 200px;
            background-color: var(--dark);
            color: white;
            text-align: center;
            border-radius: var(--radius);
            padding: var(--space-2) var(--space-3);
            font-size: 0.8rem;
            
            /* Position */
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            
            /* Fade in */
            opacity: 0;
            transition: opacity 0.3s;
        }

        .tooltip .tooltip-text::after {
            content: "";
            position: absolute;
            top: 100%;
            left: 50%;
            margin-left: -5px;
            border-width: 5px;
            border-style: solid;
            border-color: var(--dark) transparent transparent transparent;
        }

        .tooltip:hover .tooltip-text {
            visibility: visible;
            opacity: 1;
        }
        
        /* Notion badges */
        .notion-badge {
            display: inline-flex;
            align-items: center;
            padding: var(--space-1) var(--space-3);
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            margin-right: var(--space-1);
            margin-bottom: var(--space-1);
        }
        
        .notion-1 {
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
        }
        
        .notion-2 {
            background: rgba(16, 185, 129, 0.1);
            color: var(--secondary);
        }
        
        .dark-mode .notion-1 {
            background: rgba(79, 70, 229, 0.2);
            color: #a5b4fc;
        }
        
        .dark-mode .notion-2 {
            background: rgba(16, 185, 129, 0.2);
            color: #34d399;
        }
        
        /* Copied animation */
        @keyframes copied {
            0% {
                opacity: 0;
                transform: translateY(10px);
            }
            10% {
                opacity: 1;
                transform: translateY(0);
            }
            90% {
                opacity: 1;
                transform: translateY(0);
            }
            100% {
                opacity: 0;
                transform: translateY(-10px);
            }
        }
        
        .copied-message {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary);
            color: white;
            padding: var(--space-3) var(--space-5);
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            gap: var(--space-2);
            z-index: 1000;
            opacity: 0;
            pointer-events: none;
        }
        
        .copied-message.show {
            animation: copied 2s ease-in-out forwards;
        }

        /* Styles améliorés pour le contenu du brouillon */
#draft-content {
    font-size: 0.95rem;
    line-height: 1.7;
    position: relative;
}

/* Styles généraux des sections */
.aide-section {
    margin-bottom: var(--space-10);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--light-alt);
    position: relative;
    transition: var(--transition);
}

.aide-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.aide-section::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 80px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

.aide-section:last-child::after {
    display: none;
}

.aide-section h4 {
    color: var(--primary);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-5);
    padding-left: var(--space-8);
    position: relative;
    display: flex;
    align-items: center;
}

.aide-section h4::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    background-color: rgba(79, 70, 229, 0.1);
    border-radius: var(--radius);
    z-index: 0;
}

/* Styles spécifiques pour les concepts clés */
.concepts-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2'%3E%3C/polygon%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
}

.concept-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: var(--border);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.dark-mode .concept-card {
    background: var(--dark-alt);
    border-color: rgba(255, 255, 255, 0.05);
}

.concept-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.concept-header {
    background: var(--primary-gradient);
    color: white;
    padding: var(--space-3) var(--space-4);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.concept-name {
    text-transform: capitalize;
    letter-spacing: 0.5px;
    font-size: 1rem;
}

.concept-content {
    padding: var(--space-4);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.concept-def {
    margin-bottom: var(--space-3);
    line-height: 1.6;
}

.concept-details {
    margin-top: auto;
}

.concept-details-toggle {
    cursor: pointer;
    color: var(--primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    font-size: 0.85rem;
    margin-top: var(--space-2);
    transition: var(--transition);
}

.concept-details-toggle::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    margin-left: var(--space-2);
    transition: var(--transition);
}

.concept-details-toggle.active::after {
    transform: rotate(180deg);
}

.concept-details-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    margin-top: var(--space-2);
    border-top: 1px dashed rgba(79, 70, 229, 0.2);
    padding-top: var(--space-3);
}

.dark-mode .concept-details-content {
    border-top-color: rgba(79, 70, 229, 0.3);
}

.concept-details-content ul {
    margin: 0;
    padding-left: var(--space-5);
    margin-bottom: var(--space-3);
}

.concept-details-content li {
    margin-bottom: var(--space-2);
    position: relative;
}

.concept-details-content li::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--primary-light);
    border-radius: 50%;
    margin-right: var(--space-2);
    vertical-align: middle;
}

.concept-related {
    font-size: 0.85rem;
    background-color: var(--light-alt);
    padding: var(--space-3);
    border-radius: var(--radius);
    margin-top: var(--space-3);
}

.dark-mode .concept-related {
    background-color: rgba(255, 255, 255, 0.05);
}

/* Styles pour les distinctions conceptuelles */
.distinctions-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 3v3a2 2 0 0 1-2 2H3m18-3v3a2 2 0 0 0 2 2h3M3 16h3a2 2 0 0 1 2 2v3M21 16h-3a2 2 0 0 0-2 2v3'%3E%3C/path%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.distinctions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-4);
}

.distinction-card {
    background-color: var(--light-alt);
    border-radius: var(--radius);
    padding: var(--space-4);
    transition: var(--transition);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.dark-mode .distinction-card {
    background-color: rgba(255, 255, 255, 0.05);
}

.distinction-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.distinction-icon {
    color: var(--primary);
    flex-shrink: 0;
}

.dark-mode .distinction-icon {
    color: var(--primary-light);
}

/* Styles pour les questions de réflexion */
.questions-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cpath d='M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3'%3E%3C/path%3E%3Cline x1='12' y1='17' x2='12.01' y2='17'%3E%3C/line%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.questions-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.question-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    background-color: var(--white);
    border-radius: var(--radius);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
    border: var(--border);
    transition: var(--transition);
}

.dark-mode .question-item {
    background-color: var(--dark-alt);
    border-color: rgba(255, 255, 255, 0.05);
}

.question-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.question-number {
    width: 28px;
    height: 28px;
    background-color: var(--primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
}

/* Styles pour les références */
.references-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z'%3E%3C/path%3E%3Cpath d='M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z'%3E%3C/path%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.reference {
    margin-bottom: var(--space-4);
    padding: var(--space-4);
    background-color: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: var(--border);
    border-left: 3px solid var(--primary);
    transition: var(--transition);
}

.dark-mode .reference {
    background-color: var(--dark-alt);
    border-color: rgba(255, 255, 255, 0.05);
    border-left: 3px solid var(--primary);
}

.reference:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.reference-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.reference-icon {
    color: var(--primary);
}

.reference-citation {
    display: flex;
    gap: var(--space-3);
    margin: var(--space-3) 0;
    padding: var(--space-3) var(--space-4);
    background-color: var(--light-alt);
    border-radius: var(--radius);
    position: relative;
}

.dark-mode .reference-citation {
    background-color: rgba(255, 255, 255, 0.05);
}

.citation-icon {
    color: var(--primary-light);
    flex-shrink: 0;
    margin-top: 4px;
}

.quote {
    font-style: italic;
    line-height: 1.6;
    position: relative;
    margin: 0;
}

.explication {
    margin-top: var(--space-3);
    color: var(--text-light);
    padding-left: var(--space-4);
    border-left: 2px dashed var(--light-hover);
    font-size: 0.9rem;
}

.dark-mode .explication {
    color: rgba(255, 255, 255, 0.7);
    border-left-color: rgba(255, 255, 255, 0.2);
}

/* Styles pour la problématique */
.problematique-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cpath d='M16 16s-1.5-2-4-2-4 2-4 2'%3E%3C/path%3E%3Cline x1='9' y1='9' x2='9.01' y2='9'%3E%3C/line%3E%3Cline x1='15' y1='9' x2='15.01' y2='9'%3E%3C/line%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.problematique-content {
    background-color: rgba(79, 70, 229, 0.05);
    border: 1px solid rgba(79, 70, 229, 0.1);
    border-radius: var(--radius);
    padding: var(--space-5);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    position: relative;
}

.dark-mode .problematique-content {
    background-color: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.2);
}

.problematique-icon {
    color: var(--primary);
    flex-shrink: 0;
}

.dark-mode .problematique-icon {
    color: var(--primary-light);
}

.problematique-content p {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text);
}

.dark-mode .problematique-content p {
    color: white;
}

/* Styles pour le décryptage */
.decryptage-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='12' y1='16' x2='12' y2='12'%3E%3C/line%3E%3Cline x1='12' y1='8' x2='12.01' y2='8'%3E%3C/line%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.decryptage-content {
    background-color: var(--light-alt);
    border-radius: var(--radius);
    padding: var(--space-5);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.dark-mode .decryptage-content {
    background-color: rgba(255, 255, 255, 0.05);
}

.decryptage-icon {
    color: var(--primary);
    flex-shrink: 0;
}

.dark-mode .decryptage-icon {
    color: var(--primary-light);
}

/* Styles pour l'angle original */
.angle-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='13 2 3 14 12 14 11 22 21 10 12 10 13 2'%3E%3C/polygon%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.angle-content {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05), rgba(249, 115, 22, 0.05));
    border: 1px solid rgba(79, 70, 229, 0.1);
    border-radius: var(--radius);
    padding: var(--space-5);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    position: relative;
}

.dark-mode .angle-content {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(249, 115, 22, 0.1));
    border-color: rgba(99, 102, 241, 0.2);
}

.angle-icon {
    color: var(--accent);
    flex-shrink: 0;
}

.dark-mode .angle-icon {
    color: var(--accent-light);
}

/* Styles pour les limites du sujet */
.limites-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z'%3E%3C/path%3E%3Cline x1='12' y1='9' x2='12' y2='13'%3E%3C/line%3E%3Cline x1='12' y1='17' x2='12.01' y2='17'%3E%3C/line%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.limites-content {
    background-color: rgba(249, 115, 22, 0.05);
    border: 1px solid rgba(249, 115, 22, 0.1);
    border-radius: var(--radius);
    padding: var(--space-5);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.dark-mode .limites-content {
    background-color: rgba(249, 115, 22, 0.1);
    border-color: rgba(249, 115, 22, 0.2);
}

.limites-icon {
    color: var(--accent);
    flex-shrink: 0;
}

.dark-mode .limites-icon {
    color: var(--accent-light);
}

/* Styles pour les points d'attention */
.attention-section h4::after {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 8A6 6 0 0 0 6 8c0 7-3 9-3 9h18s-3-2-3-9'%3E%3C/path%3E%3Cpath d='M13.73 21a2 2 0 0 1-3.46 0'%3E%3C/path%3E%3C/svg%3E");
    position: absolute;
    left: 6px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.attention-content {
    background-color: var(--light-alt);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: var(--space-5);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.dark-mode .attention-content {
    background-color: rgba(255, 255, 255, 0.05);
}

.attention-icon {
    color: var(--accent);
    flex-shrink: 0;
}

.dark-mode .attention-icon {
    color: var(--accent-light);
}

/* Adaptations responsive */
@media (max-width: 768px) {
    .concepts-grid, .distinctions-grid {
        grid-template-columns: 1fr;
    }
    
    .problematique-content, .decryptage-content, .angle-content, .limites-content, .attention-content {
        flex-direction: column;
    }
    
    .aide-section h4 {
        font-size: 1.1rem;
    }
}

/* Styles pour les avatars d'auteurs */
.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: var(--space-3);
    border: 2px solid var(--primary-light);
    box-shadow: var(--shadow-sm);
    position: relative;
    background-color: var(--light-alt);
    flex-shrink: 0;
}

.dark-mode .author-avatar {
    border-color: var(--primary);
    background-color: var(--dark-light);
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.reference:hover .author-avatar img {
    transform: scale(1.1);
}

/* Modifier le header de référence pour inclure l'avatar */
.reference-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-3);
}

.reference-header strong {
    color: var(--primary);
    font-size: 1.05rem;
}

.dark-mode .reference-header strong {
    color: var(--primary-light);
}