/* ===============================================
   VARIABLES & RESET
   =============================================== */

:root {
    /* Couleurs principales */
    --color-primary: #e6115b;
    --color-secondary: #000a4e;
    --color-accent: #f9d10d;
    
    /* Nuances */
    --color-primary-light: #ff4081;
    --color-primary-dark: #c2003f;
    --color-secondary-light: #1976d2;
    --color-secondary-dark: #000526;
    
    /* Couleurs système */
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-danger: #f44336;
    --color-info: #2196f3;
    
    /* Couleurs neutres */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-100: #f8f9fa;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #6c757d;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;
    
    /* Typographie */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Arial', sans-serif;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
    
    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ===============================================
   UTILITAIRES
   =============================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

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

.text-accent {
    color: var(--color-accent);
}

.text-danger {
    color: var(--color-danger);
}

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

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

.bg-gray {
    background-color: var(--color-gray-100);
}

/* ===============================================
   TYPOGRAPHIE
   =============================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

.lead {
    font-size: 1.25rem;
    font-weight: 300;
}

/* ===============================================
   BOUTONS
   =============================================== */

.btn-primary,
.btn-secondary,
.btn-outline,
.btn-accent {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    color: var(--color-white);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--color-secondary-dark), var(--color-secondary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

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

.btn-accent:hover {
    background: #ffd740;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    position: relative;
    transition: var(--transition-base);
}

.btn-icon:hover,
.btn-icon.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-icon .badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--color-danger);
    color: white;
    border-radius: var(--radius-full);
    width: 20px;
    height: 20px;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
    font-size: 0.875rem;
}

.btn-icon-round {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

.btn-icon-round:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.1);
}

/* ===============================================
   HEADER & NAVIGATION
   =============================================== */

.header {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-base);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-menu a {
    color: var(--color-gray-700);
    font-weight: 500;
    position: relative;
    padding: 8px 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* ===============================================
   HERO SECTION
   =============================================== */

.hero-section {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    color: var(--color-white);
    padding: var(--spacing-xxl) 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(230, 17, 91, 0.3), transparent);
    border-radius: var(--radius-full);
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(249, 209, 13, 0.2), transparent);
    border-radius: var(--radius-full);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-content .tagline {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent);
    font-weight: 600;
}

.hero-content p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.hero-search {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs);
    display: flex;
    gap: var(--spacing-xs);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    box-shadow: var(--shadow-xl);
}

.hero-search input,
.hero-search select {
    border: none;
    padding: 12px 16px;
    flex: 1;
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.hero-search input:focus,
.hero-search select:focus {
    outline: 2px solid var(--color-primary);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.hero-stat {
    text-align: center;
}

.hero-stat .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    display: block;
}

.hero-stat .label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ===============================================
   CARDS
   =============================================== */

.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.card-header h3 {
    margin-bottom: 0;
}

.card-body {
    padding: var(--spacing-md) 0;
}

.card-footer {
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ===============================================
   EXAM CARDS
   =============================================== */

.exam-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-base);
    position: relative;
}

.exam-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.exam-card-header {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    color: var(--color-white);
    padding: var(--spacing-md);
    position: relative;
}

.exam-card-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 12px;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.exam-card-badge.free {
    background: var(--color-success);
    color: white;
}

.exam-card-badge.premium {
    background: var(--color-accent);
    color: var(--color-secondary);
}

.exam-card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-white);
}

.exam-card-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    opacity: 0.9;
}

.exam-card-body {
    padding: var(--spacing-md);
}

.exam-card-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.info-item i {
    color: var(--color-primary);
}

.exam-card-description {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.exam-card-footer {
    display: flex;
    gap: var(--spacing-sm);
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-md);
}

.exam-card-footer .btn-primary,
.exam-card-footer .btn-outline {
    flex: 1;
    padding: 10px;
    font-size: 0.875rem;
}

/* ===============================================
   SECTIONS
   =============================================== */

.section {
    padding: var(--spacing-xxl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
}

.section-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* ===============================================
   GRIDS
   =============================================== */

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

/* ===============================================
   FEATURES
   =============================================== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-card i {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    display: block;
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-secondary);
}

.feature-card p {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
}

/* ===============================================
   STATS
   =============================================== */

.stats-section {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    padding: var(--spacing-xxl) 0;
}

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

.stat-card {
    text-align: center;
}

.stat-card i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.stat-card .number {
    font-size: 3rem;
    font-weight: 700;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-card .label {
    font-size: 1rem;
    opacity: 0.9;
}

/* ===============================================
   CTA (Call to Action)
   =============================================== */

.cta-section {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    color: var(--color-white);
    padding: var(--spacing-xxl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(230, 17, 91, 0.3), transparent);
    border-radius: var(--radius-full);
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===============================================
   BADGES
   =============================================== */

.badge,
.badge-sm {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-sm {
    padding: 2px 8px;
    font-size: 0.6875rem;
}

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

.badge-premium {
    background: var(--color-accent);
    color: var(--color-secondary);
}

.badge-new {
    background: var(--color-info);
    color: white;
}

.points-badge {
    background: var(--color-success);
    color: white;
    font-weight: 700;
}

.points-badge.pending {
    background: var(--color-gray-400);
}
/* ===============================================
   FOOTER
   =============================================== */

.footer {
    background: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9375rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-base);
    font-size: 0.9375rem;
}

.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.social-links a:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* ===============================================
   FORMS
   =============================================== */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-base);
    background: var(--color-white);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(230, 17, 91, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-checkbox,
.form-radio {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.form-checkbox input,
.form-radio input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-error {
    color: var(--color-danger);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.form-help {
    color: var(--color-gray-600);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* ===============================================
   MODALS
   =============================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.9);
    transition: var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin-bottom: 0;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--color-gray-600);
    transition: var(--transition-base);
}

.modal-close:hover {
    background: var(--color-gray-100);
    color: var(--color-danger);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* ===============================================
   TABS
   =============================================== */

.tabs {
    margin-bottom: var(--spacing-lg);
}

.tab-list {
    display: flex;
    gap: var(--spacing-sm);
    border-bottom: 2px solid var(--color-gray-200);
    margin-bottom: var(--spacing-lg);
}

.tab-button {
    padding: 12px 24px;
    font-weight: 600;
    color: var(--color-gray-600);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    transition: var(--transition-base);
    cursor: pointer;
    margin-bottom: -2px;
}

.tab-button:hover {
    color: var(--color-primary);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ===============================================
   ALERTS
   =============================================== */

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
}

.alert i {
    font-size: 1.25rem;
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--color-success);
    border-left: 4px solid var(--color-success);
}

.alert-warning {
    background: rgba(255, 152, 0, 0.1);
    color: var(--color-warning);
    border-left: 4px solid var(--color-warning);
}

.alert-danger {
    background: rgba(244, 67, 54, 0.1);
    color: var(--color-danger);
    border-left: 4px solid var(--color-danger);
}

.alert-info {
    background: rgba(33, 150, 243, 0.1);
    color: var(--color-info);
    border-left: 4px solid var(--color-info);
}

/* ===============================================
   PROGRESS BARS
   =============================================== */

.progress-container {
    margin-bottom: var(--spacing-md);
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
}

.progress-fill.success {
    background: linear-gradient(90deg, var(--color-success), #66bb6a);
}

.progress-fill.warning {
    background: linear-gradient(90deg, var(--color-warning), #ffa726);
}

/* ===============================================
   BREADCRUMB
   =============================================== */

.breadcrumb {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    padding: var(--spacing-md) 0;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--color-gray-600);
    transition: var(--transition-base);
}

.breadcrumb a:hover {
    color: var(--color-primary);
}

.breadcrumb-separator {
    color: var(--color-gray-400);
}

.breadcrumb-current {
    color: var(--color-gray-800);
    font-weight: 600;
}

/* ===============================================
   PAGINATION
   =============================================== */

.pagination {
    display: flex;
    gap: var(--spacing-xs);
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.pagination-btn {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    color: var(--color-gray-700);
    font-weight: 600;
    transition: var(--transition-base);
    cursor: pointer;
}

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

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

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

.pagination-btn:disabled:hover {
    background: var(--color-white);
    color: var(--color-gray-700);
    border-color: var(--color-gray-300);
}

/* ===============================================
   FILTERS
   =============================================== */

.filters-section {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

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

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

.filter-group label {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

.filter-group select,
.filter-group input {
    padding: 10px 12px;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.filter-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 6px 12px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.filter-tag button {
    background: none;
    border: none;
    color: var(--color-white);
    cursor: pointer;
    padding: 0;
    display: inline-flex;
    align-items: center;
}

/* ===============================================
   QUIZ INTERFACE
   =============================================== */

.quiz-container {
    max-width: 900px;
    margin: 0 auto;
}

.quiz-header {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
}

.quiz-progress {
    margin-bottom: var(--spacing-md);
}

.quiz-timer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

.timer-display {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.timer-display.warning {
    color: var(--color-warning);
    animation: pulse 1s infinite;
}

.timer-display.danger {
    color: var(--color-danger);
    animation: pulse 0.5s infinite;
}

.question-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
}

.question-header {
    margin-bottom: var(--spacing-lg);
}

.question-number {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.question-text {
    font-size: 1.25rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.question-points {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-success);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.option-item {
    position: relative;
}

.option-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.option-label {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    background: var(--color-white);
}

.option-label:hover {
    border-color: var(--color-primary);
    background: rgba(230, 17, 91, 0.05);
}

.option-input:checked + .option-label {
    border-color: var(--color-primary);
    background: rgba(230, 17, 91, 0.1);
}

.option-label.correct {
    border-color: var(--color-success);
    background: rgba(76, 175, 80, 0.1);
}

.option-label.incorrect {
    border-color: var(--color-danger);
    background: rgba(244, 67, 54, 0.1);
}

.option-radio {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-gray-400);
    border-radius: var(--radius-full);
    margin-right: var(--spacing-md);
    position: relative;
    flex-shrink: 0;
}

.option-input:checked + .option-label .option-radio {
    border-color: var(--color-primary);
}

.option-input:checked + .option-label .option-radio::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

.option-text {
    flex: 1;
    font-size: 1rem;
}

.option-feedback {
    margin-left: auto;
    padding-left: var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 600;
}

.option-feedback.correct {
    color: var(--color-success);
}

.option-feedback.incorrect {
    color: var(--color-danger);
}

.question-explanation {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-left: 4px solid var(--color-info);
    border-radius: var(--radius-md);
}

.explanation-title {
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-lg);
}

.question-palette {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.palette-title {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-secondary);
}

.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: var(--spacing-xs);
}

.palette-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 2px solid var(--color-gray-300);
    background: var(--color-white);
    color: var(--color-gray-700);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

.palette-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

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

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

/* ===============================================
   RESULTS PAGE
   =============================================== */

.results-container {
    max-width: 900px;
    margin: 0 auto;
}

.results-header {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.results-score {
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-accent);
    margin: var(--spacing-md) 0;
}

.results-message {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card-result {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.stat-card-result i {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.stat-card-result .value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-secondary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-card-result .label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.performance-breakdown {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
}

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

.breakdown-label {
    font-weight: 600;
    color: var(--color-gray-700);
}

.breakdown-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.results-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===============================================
   DASHBOARD
   =============================================== */

.dashboard-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
}

.dashboard-sidebar {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    height: fit-content;
    position: sticky;
    top: 80px;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.sidebar-menu-item {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--color-gray-700);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-base);
    cursor: pointer;
}

.sidebar-menu-item:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

.sidebar-menu-item.active {
    background: rgba(230, 17, 91, 0.1);
    color: var(--color-primary);
    font-weight: 600;
}

.sidebar-menu-item i {
    font-size: 1.25rem;
}

.dashboard-main {
    min-width: 0;
}

.dashboard-header {
    margin-bottom: var(--spacing-xl);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.dashboard-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.dashboard-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.dashboard-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.dashboard-card-icon {
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
}

.dashboard-card-icon.primary {
    background: rgba(230, 17, 91, 0.1);
    color: var(--color-primary);
}

.dashboard-card-icon.success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--color-success);
}

.dashboard-card-icon.info {
    background: rgba(33, 150, 243, 0.1);
    color: var(--color-info);
}

.dashboard-card-icon.warning {
    background: rgba(255, 152, 0, 0.1);
    color: var(--color-warning);
}

.dashboard-card-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
}

.dashboard-card-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}
/* ===============================================
   RECENT ACTIVITY
   =============================================== */

.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.activity-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.activity-item:hover {
    background: var(--color-gray-100);
}

.activity-icon {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.activity-icon.quiz {
    background: rgba(230, 17, 91, 0.1);
    color: var(--color-primary);
}

.activity-icon.course {
    background: rgba(33, 150, 243, 0.1);
    color: var(--color-info);
}

.activity-icon.achievement {
    background: rgba(255, 152, 0, 0.1);
    color: var(--color-warning);
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
}

.activity-description {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xs);
}

.activity-time {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* ===============================================
   LEADERBOARD
   =============================================== */

.leaderboard-container {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.leaderboard-filters {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.leaderboard-filter-btn {
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: 2px solid var(--color-gray-300);
    background: var(--color-white);
    color: var(--color-gray-700);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

.leaderboard-filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.leaderboard-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.leaderboard-item:hover {
    background: var(--color-gray-100);
}

.leaderboard-item.current-user {
    background: rgba(230, 17, 91, 0.05);
    border-color: var(--color-primary);
}

.leaderboard-rank {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.leaderboard-rank.gold {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: white;
}

.leaderboard-rank.silver {
    background: linear-gradient(135deg, #C0C0C0, #808080);
    color: white;
}

.leaderboard-rank.bronze {
    background: linear-gradient(135deg, #CD7F32, #8B4513);
    color: white;
}

.leaderboard-rank.regular {
    background: var(--color-gray-200);
    color: var(--color-gray-700);
}

.leaderboard-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    margin-left: var(--spacing-md);
    flex-shrink: 0;
    object-fit: cover;
    border: 3px solid var(--color-white);
    box-shadow: var(--shadow-sm);
}

.leaderboard-info {
    flex: 1;
    margin-left: var(--spacing-md);
}

.leaderboard-name {
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
}

.leaderboard-stats {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.leaderboard-score {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-left: auto;
}

.leaderboard-badge {
    margin-left: var(--spacing-sm);
    padding: 4px 12px;
    background: var(--color-accent);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
}

/* ===============================================
   ACHIEVEMENTS & BADGES
   =============================================== */

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-lg);
}

.achievement-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-base);
    position: relative;
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.achievement-card.locked {
    opacity: 0.5;
    filter: grayscale(100%);
}

.achievement-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    font-size: 2.5rem;
}

.achievement-card.locked .achievement-icon {
    background: var(--color-gray-300);
    color: var(--color-gray-500);
}

.achievement-title {
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
}

.achievement-description {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.achievement-progress {
    margin-top: var(--spacing-md);
}

.achievement-date {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-top: var(--spacing-sm);
}

/* ===============================================
   PROFILE PAGE
   =============================================== */

.profile-container {
    max-width: 1000px;
    margin: 0 auto;
}

.profile-header {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    color: white;
    padding: var(--spacing-xxl) var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.profile-avatar-wrapper {
    margin-bottom: var(--spacing-lg);
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    border: 5px solid white;
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.profile-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.profile-bio {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
}

.profile-badges {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.profile-badge {
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.profile-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
}

.profile-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.profile-stat-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.profile-stat-card h3 {
    font-size: 1.125rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.profile-stats-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.profile-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    background: var(--color-gray-100);
}

.profile-stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.profile-stat-value {
    font-weight: 700;
    color: var(--color-secondary);
}

.profile-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.profile-section {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.profile-section h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-secondary);
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */

/* Tablettes */
@media (max-width: 992px) {
    .navbar-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: left 0.3s ease;
        overflow-y: auto;
        z-index: 999;
    }

    .navbar-menu.active {
        left: 0;
    }

    .navbar-toggle {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        order: -1;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .dashboard-container {
        grid-template-columns: 1fr;
    }

    .dashboard-sidebar {
        position: static;
    }

    .profile-content {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --spacing-xxl: 3rem;
        --spacing-xl: 2rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .features-grid,
    .stats-grid,
    .courses-grid {
        grid-template-columns: 1fr;
    }

    .course-card {
        max-width: none;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .filters-grid {
        grid-template-columns: 1fr;
    }

    .quiz-navigation {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .results-score {
        font-size: 3rem;
    }

    .results-message {
        font-size: 1.25rem;
    }

    .leaderboard-item {
        flex-wrap: wrap;
    }

    .leaderboard-score {
        width: 100%;
        text-align: center;
        margin-top: var(--spacing-sm);
        margin-left: 0;
    }

    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .modal {
        margin: var(--spacing-md);
        max-height: 85vh;
    }

    .tab-list {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-button {
        white-space: nowrap;
    }
}

/* Petits mobiles */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9375rem;
    }

    .results-score {
        font-size: 2.5rem;
    }

    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .palette-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .navbar-brand {
        font-size: 1.25rem;
    }

    .card {
        padding: var(--spacing-md);
    }

    .question-text {
        font-size: 1.125rem;
    }

    .option-label {
        padding: var(--spacing-sm);
    }
}

/* ===============================================
   PRINT STYLES
   =============================================== */

@media print {
    .navbar,
    .footer,
    .btn,
    .quiz-navigation,
    .dashboard-sidebar,
    .modal-overlay {
        display: none !important;
    }

    body {
        font-size: 12pt;
        color: black;
        background: white;
    }

    .card,
    .course-card,
    .question-card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }

    a {
        text-decoration: underline;
    }

    .section {
        padding: 1rem 0;
    }
}

/* ===============================================
   UTILITY CLASSES
   =============================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-info { color: var(--color-info); }

.bg-primary { background: var(--color-primary); }
.bg-secondary { background: var(--color-secondary); }
.bg-light { background: var(--color-gray-100); }
.bg-white { background: var(--color-white); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-normal { font-weight: 400; }

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

/* ===============================================
   DARK MODE (BONUS)
   =============================================== */

@media (prefers-color-scheme: dark) {
    body.dark-mode {
        --color-gray-100: #1e293b;
        --color-gray-200: #334155;
        --color-gray-300: #475569;
        --color-gray-600: #cbd5e1;
        --color-gray-700: #e2e8f0;
        --color-gray-800: #f1f5f9;
        --color-white: #0f172a;
        --color-secondary: #f1f5f9;
        
        background: #0f172a;
        color: #e2e8f0;
    }

    body.dark-mode .card,
    body.dark-mode .course-card,
    body.dark-mode .navbar {
        background: #1e293b;
        color: #e2e8f0;
    }

    body.dark-mode .btn-secondary {
        background: #334155;
        color: #f1f5f9;
    }
}

/* ===============================================
   FIN DU FICHIER CSS
   =============================================== */