/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea6a 0%, #764ba242 50%, #6365f144 100%);
    background-attachment: fixed;
    min-height: 100vh;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Pages */
.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
}

/* Boutons modernes */
.btn-primary, .btn-secondary, .btn-success {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.025em;
    min-height: 2.75rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), #3730a3);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary:disabled {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.6;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* Effet de ripple pour les boutons */
.btn-primary::before, .btn-success::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:active::before, .btn-success:active::before {
    width: 300px;
    height: 300px;
}

/* Page d'accueil moderne */
#home-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    animation: fadeIn 0.8s ease-out;
}

#home-page .container {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 3rem;
    text-align: center;
    max-width: 42rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

#home-page .container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--success-color));
    background-size: 200% 100%;
    animation: gradientShift 3s ease-in-out infinite;
}

#home-page h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideInDown 0.8s ease-out 0.2s both;
}

#home-page p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 400;
    animation: slideInUp 0.8s ease-out 0.4s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.quiz-info {
    animation: slideInUp 0.8s ease-out 0.6s both;
}

.quiz-info h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.quiz-info ul {
    list-style: none;
    margin: 1.5rem 0;
    text-align: left;
    display: grid;
    gap: 0.75rem;
}

.quiz-info li {
    padding: 1rem;
    font-size: 1rem;
    font-weight: 500;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.quiz-info li:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.quiz-details {
    background: linear-gradient(135deg, var(--bg-secondary), rgba(99, 102, 241, 0.05));
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin: 1.5rem 0;
    text-align: left;
    border: 1px solid var(--border-color);
    animation: slideInUp 0.8s ease-out 0.8s both;
}

.quiz-details p {
    margin: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

.quiz-details strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Page de quiz moderne */
.quiz-header {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: var(--radius-xl);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: slideInDown 0.6s ease-out;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 1rem;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--success-color));
    background-size: 200% 100%;
    width: 0%;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 6px;
    position: relative;
    animation: progressGlow 2s ease-in-out infinite;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: progressShine 2s ease-in-out infinite;
}

.quiz-info-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    font-size: 0.875rem;
}

.quiz-info-bar span {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

@keyframes progressGlow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(99, 102, 241, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
    }
}

@keyframes progressShine {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.question-container {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--radius-xl);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-lg);
    min-height: 28rem;
    border: 1px solid var(--border-color);
    animation: slideInUp 0.6s ease-out 0.2s both;
    position: relative;
    overflow: hidden;
}

.question-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.question-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    line-height: 1.6;
}

.question-type {
    display: inline-flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-sm);
}

/* Types de questions modernes */
.mcq-options {
    list-style: none;
    display: grid;
    gap: 0.75rem;
    margin-top: 1rem;
}

.mcq-options li {
    margin: 0;
}

.mcq-options label {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.mcq-options label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.mcq-options label:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.mcq-options label:hover::before {
    transform: scaleY(1);
}

.mcq-options input[type="radio"] {
    margin-right: 1rem;
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--primary-color);
}

.mcq-options input[type="radio"]:checked + span {
    color: var(--primary-color);
    font-weight: 600;
}

.mcq-options label:has(input:checked) {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.05));
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.mcq-options label:has(input:checked)::before {
    transform: scaleY(1);
}

.code-input {
    width: 100%;
    min-height: 10rem;
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    resize: vertical;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-primary);
    font-weight: 400;
}

.code-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.code-input::placeholder {
    color: var(--text-secondary);
    font-style: italic;
}

.free-text-input {
    width: 100%;
    min-height: 8rem;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    line-height: 1.6;
    resize: vertical;
    background: var(--bg-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-primary);
}

.free-text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.free-text-input::placeholder {
    color: var(--text-secondary);
    font-style: italic;
}

.quiz-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: slideInUp 0.6s ease-out 0.4s both;
    gap: 1rem;
}

/* Page de résultats moderne */
.results-summary {
    text-align: center;
    margin: 2rem 0;
    animation: fadeIn 0.8s ease-out;
}

.score-card {
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: inline-block;
    min-width: 16rem;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.score-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--success-color), var(--primary-color), var(--secondary-color));
    background-size: 200% 100%;
    animation: gradientShift 3s ease-in-out infinite;
}

.score-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.score-value {
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--success-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 0.5rem;
    animation: scoreCounter 2s ease-out;
}

@keyframes scoreCounter {
    from {
        transform: scale(0.5);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.skills-chart-container, .class-comparison {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--radius-xl);
    margin: 1.5rem 0;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: slideInUp 0.6s ease-out;
}

.skills-chart-container h3, .class-comparison h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.account-creation {
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    padding: 2rem;
    border-radius: var(--radius-xl);
    margin: 1.5rem 0;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: slideInUp 0.6s ease-out 0.2s both;
}

.account-creation h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
}

.account-creation p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

#user-uid {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    color: var(--primary-color);
    font-weight: 500;
}

#account-form {
    max-width: 28rem;
    margin: 1.5rem auto;
}

#account-form input {
    width: 100%;
    padding: 0.875rem 1rem;
    margin: 0.75rem 0;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-primary);
}

#account-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

#account-form input::placeholder {
    color: var(--text-secondary);
}

.password-info {
    color: var(--text-secondary);
    font-style: italic;
    margin: 0.75rem 0;
    text-align: center;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Styles pour les icônes */
.domain-icon {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.detail-icon {
    width: 1rem;
    height: 1rem;
    color: var(--primary-color);
    margin-right: 0.5rem;
    flex-shrink: 0;
}

.btn-icon {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.score-icon, .chart-icon, .account-icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.uid-icon, .info-icon {
    width: 1rem;
    height: 1rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.input-icon {
    width: 1.125rem;
    height: 1.125rem;
    color: var(--text-secondary);
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    transition: color 0.3s ease;
}

/* Groupes d'input avec icônes */
.input-group {
    position: relative;
    margin: 0.75rem 0;
}

.input-group input {
    padding-left: 3rem !important;
    margin: 0 !important;
}

.input-group:focus-within .input-icon {
    color: var(--primary-color);
}

/* Amélioration des détails du quiz */
.quiz-details p {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

/* Animation des icônes */
.domain-icon, .detail-icon, .btn-icon, .score-icon, .chart-icon, .account-icon {
    transition: all 0.3s ease;
}

.quiz-info li:hover .domain-icon {
    transform: scale(1.1);
    color: var(--secondary-color);
}

.btn-primary:hover .btn-icon, .btn-success:hover .btn-icon {
    transform: translateX(2px);
}

.btn-secondary:hover .btn-icon {
    transform: translateX(-2px);
}

/* Initialisation des icônes Lucide */
body {
    --lucide-stroke-width: 2;
}

/* Animation de chargement pour les icônes */
@keyframes iconFadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

[data-lucide] {
    animation: iconFadeIn 0.3s ease-out;
}

/* Animation pour les confettis */
@keyframes confettiFall {
    0% {
        transform: translateY(-10px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

/* Amélioration des notifications toast */
.toast {
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Effet de pulsation pour les éléments importants */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Amélioration de l'accessibilité */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible amélioré */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Amélioration des transitions globales */
* {
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Effet de survol pour les cartes */
.quiz-info, .question-container, .results-summary, .score-card {
    transition: all 0.3s ease;
}

.quiz-info:hover, .question-container:hover, .results-summary:hover, .score-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* Styles pour les statistiques de temps */
.time-stats {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.time-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.time-icon {
    width: 1rem;
    height: 1rem;
    color: var(--primary-color);
}

/* Styles pour les niveaux de compétence */
.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.skill-level {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.skill-level.expert {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.skill-level.advanced {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}

.skill-level.intermediate {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.skill-level.beginner {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.skill-level.novice {
    background: linear-gradient(135deg, #6b7280, #4b5563);
    color: white;
}

/* Styles pour les badges de performance */
.performance-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    border-radius: var(--radius-lg);
    margin-top: 1rem;
    font-weight: 600;
    text-align: center;
    justify-content: center;
}

.performance-badge.exceptional {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #92400e;
    border: 2px solid #f59e0b;
}

.performance-badge.excellent {
    background: linear-gradient(135deg, #34d399, #10b981);
    color: #065f46;
    border: 2px solid #10b981;
}

.performance-badge.good {
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    color: #1e40af;
    border: 2px solid #3b82f6;
}

.performance-badge.average {
    background: linear-gradient(135deg, #a78bfa, #8b5cf6);
    color: #5b21b6;
    border: 2px solid #8b5cf6;
}

.performance-badge.needs-improvement {
    background: linear-gradient(135deg, #fca5a5, #ef4444);
    color: #991b1b;
    border: 2px solid #ef4444;
}

.badge-icon {
    width: 1.25rem;
    height: 1.25rem;
}

/* Animation pour les barres de progression */
.skill-progress {
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Amélioration responsive pour les nouvelles fonctionnalités */
@media (max-width: 768px) {
    .time-stats {
        flex-direction: column;
    }
    
    .skill-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .performance-badge {
        flex-direction: column;
        text-align: center;
    }
}

/* Dashboard moderne */
#dashboard-page {
    animation: fadeIn 0.8s ease-out;
}

#dashboard-page h1 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    padding: 2rem;
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--success-color));
}

.stat-card:hover {
    transform: translateY(-4px);
}

.stat-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--success-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 0.5rem;
}

.charts-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.chart-section {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.chart-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Quiz Styles */
.screen {
    display: none;
    min-height: 100vh;
    padding: 20px;
}

.screen.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-card, .results-card, .registration-card, .info-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 100%;
    text-align: center;
}

.welcome-card h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.info-box {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin: 2rem 0;
    text-align: left;
}

.info-box h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.info-box ul {
    list-style: none;
    padding: 0;
}

.info-box li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.info-box li:last-child {
    border-bottom: none;
}

/* Quiz Screen */
#quiz-screen {
    display: none;
    flex-direction: column;
    min-height: 100vh;
    padding: 0;
}

#quiz-screen.active {
    display: flex;
}

.quiz-header {
    background: var(--bg-primary);
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.progress-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.quiz-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.question-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-xl);
    max-width: 800px;
    width: 100%;
}

.question-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.category-badge, .type-badge {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
}

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

.type-badge {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.question-card h2 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    line-height: 1.4;
}

/* MCQ Options */
.options-container {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.option:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.15);
}

.option:hover::before {
    left: 100%;
}

.option:active {
    transform: translateY(0);
    transition: transform 0.1s ease;
}

.option input[type="radio"] {
    margin: 0;
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

.option input[type="radio"]:checked + label {
    color: var(--primary-color);
    font-weight: 600;
}

.option:has(input[type="radio"]:checked) {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.option label {
    flex: 1;
    cursor: pointer;
    margin: 0;
    font-size: 1rem;
    line-height: 1.5;
    transition: color 0.2s ease;
}

/* AI Feedback Section */
.ai-feedback-section {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.ai-feedback-section h3 {
    margin: 0 0 1.5rem 0;
    color: var(--primary-color);
    font-size: 1.25rem;
}

.ai-feedback-item {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.ai-feedback-item:last-child {
    margin-bottom: 0;
}

.feedback-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.feedback-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1rem;
}

.ai-score {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.ai-score.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.ai-score.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.feedback-content p {
    margin: 0.75rem 0;
    line-height: 1.6;
}

.feedback-content pre {
    background: #1f2937;
    color: #f9fafb;
    padding: 1rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 0.75rem 0;
    font-size: 0.875rem;
    line-height: 1.5;
}

.feedback-content code {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.feedback-errors {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-md);
}

.feedback-errors strong {
    color: var(--error-color);
    display: block;
    margin-bottom: 0.5rem;
}

.feedback-errors ul {
    margin: 0;
    padding-left: 1.25rem;
}

.feedback-errors li {
    margin: 0.25rem 0;
    color: var(--text-secondary);
}

/* Code Container */
.code-container {
    margin-bottom: 2rem;
}

.code-container pre {
    background: #1f2937;
    color: #f9fafb;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.code-container input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
}

/* Free Container */
.free-container textarea {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    resize: vertical;
    font-family: inherit;
}

.keywords-hint {
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.question-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* Results Screen */
.score-summary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin: 2rem 0;
}

.main-score {
    text-align: center;
}

.main-score span {
    font-size: 4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.level-badge {
    padding: 1rem 2rem;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 1.25rem;
}

.level-badge.level-débutant {
    background: var(--error-color);
    color: white;
}

.level-badge.level-intermédiaire {
    background: var(--warning-color);
    color: white;
}

.level-badge.level-avancé {
    background: var(--success-color);
    color: white;
}

.level-badge.level-expert {
    background: var(--primary-color);
    color: white;
}

.category-results, .class-comparison {
    margin: 2rem 0;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.category-score {
    text-align: center;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
}

.score-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 1rem auto;
    color: white;
    font-weight: 600;
    font-size: 1.25rem;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    flex-direction: column;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    font-weight: 600;
    color: var(--primary-color);
}

/* Registration Form */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
}

.uid-info {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin: 1.5rem 0;
    text-align: left;
}

.uid-info code {
    display: block;
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-family: 'JetBrains Mono', monospace;
    margin: 0.5rem 0;
    word-break: break-all;
}

/* Dashboard Styles */
.dashboard-header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.dashboard-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.dashboard-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.dashboard-card h2 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.stats-overview {
    grid-column: 1 / -1;
}

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

.stats-grid .stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    display: block;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Charts */
.level-chart, .category-chart {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
}

.level-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 50%;
}

.legend-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Activity List */
.activity-list {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

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

.activity-icon {
    font-size: 1.25rem;
}

.activity-content {
    flex: 1;
}

.activity-text {
    margin-bottom: 0.25rem;
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Students Table */
.students-table-container {
    overflow-x: auto;
}

.students-table {
    width: 100%;
    border-collapse: collapse;
}

.students-table th,
.students-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.students-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

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

.student-rank {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.student-id {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.score-cell {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.score-value {
    font-weight: 600;
    min-width: 50px;
}

.score-bar {
    flex: 1;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    max-width: 100px;
}

.score-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.date-cell {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Questions Analysis */
.question-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.question-stat:last-child {
    border-bottom: none;
}

.question-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.question-category {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.question-id {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.question-difficulty {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
}

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

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

.difficulty-hard {
    background: var(--error-color);
    color: white;
}

.question-attempts {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--bg-primary);
    margin: 5% auto;
    padding: 0;
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    color: var(--primary-color);
}

.close {
    color: var(--text-secondary);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 2rem;
}

.student-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.student-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.student-score-large {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.category-scores-detail {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.category-score-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.category-name {
    min-width: 100px;
    font-weight: 500;
}

.score-bar-detail {
    flex: 1;
    height: 24px;
    background: var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
}

.score-bar-detail .score-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.score-bar-detail .score-text {
    position: absolute;
    right: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.answers-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 200px;
    overflow-y: auto;
}

.answer-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
}

.answer-item.correct {
    background: rgba(16, 185, 129, 0.1);
}

.answer-item.incorrect {
    background: rgba(239, 68, 68, 0.1);
}

.answer-category {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.answer-question {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Utility Classes */
.loading {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: 2rem;
}

.no-data {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: 1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

.btn-secondary:hover {
    background: var(--text-primary);
}

/* Styles pour les informations HTML dans la sidebar */
.course-details {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.8rem;
    line-height: 1.4;
}

.course-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
    font-style: italic;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-objectives {
    margin-bottom: 0.5rem;
}

.course-objectives strong {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.75rem;
    display: block;
    margin-bottom: 0.25rem;
}

.course-objectives ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.course-objectives li {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.7rem;
    padding: 0.1rem 0;
    position: relative;
    padding-left: 1rem;
}

.course-objectives li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    top: 0;
}

.course-time {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.7rem;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.validation-type {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Animation pour l'expansion des détails */
.nav-item:hover .course-details {
    opacity: 1;
    max-height: 200px;
    transition: all 0.3s ease-in-out;
}

.course-details {
    opacity: 0.8;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease-in-out;
}

.nav-item:hover .course-details,
.nav-item.active .course-details {
    opacity: 1;
    max-height: 200px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .welcome-card, .results-card, .registration-card, .info-card {
        padding: 2rem;
    }
    
    .question-card {
        padding: 2rem;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .score-summary {
        flex-direction: column;
        gap: 1rem;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .students-table {
        font-size: 0.875rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 2% auto;
    }
    
    /* Ajustements mobile pour les détails des cours */
    .course-details {
        opacity: 1;
        max-height: none;
        overflow: visible;
    }
    
    .course-description {
        -webkit-line-clamp: 3;
    }
}

/* Styles pour le filtrage temporel du dashboard */
.time-filter {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.time-display {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    background: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.filter-status {
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: var(--success-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* Animation pour la mise à jour en temps réel */
@keyframes pulse-update {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.time-display {
    animation: pulse-update 2s ease-in-out infinite;
}

/* Message d'aucune donnée amélioré */
.no-data {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-style: italic;
    background: rgba(245, 158, 11, 0.1);
    border-radius: var(--radius-md);
    border: 1px dashed var(--warning-color);
}

/* Responsive pour les nouveaux éléments */
@media (max-width: 768px) {
    .time-filter {
        flex-direction: column;
        text-align: center;
    }
    
    .time-display {
        font-size: 1rem;
    }
    
    .filter-status {
        font-size: 0.8rem;
    }
}