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

/* Liens d'évitement */
.skip-links {
    position: absolute;
    top: -100px;
    left: 0;
    z-index: 1000;
}

.skip-link {
    position: absolute;
    top: 0;
    left: 0;
    background: var(--primary-600);
    color: var(--white);
    padding: var(--spacing-3) var(--spacing-4);
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 var(--border-radius-md) 0;
    transform: translateY(-100%);
    transition: transform 0.2s ease;
}

.skip-link:focus {
    transform: translateY(0);
    outline: 2px solid var(--white);
    outline-offset: 2px;
}

/* Amélioration de la visibilité du focus */
*:focus {
    outline: 2px solid var(--primary-600);
    outline-offset: 2px;
}

/* Focus visible pour les éléments interactifs */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary-600);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.2);
}

/* Amélioration du contraste pour les liens */
a {
    color: var(--primary-600);
    text-decoration: underline;
}

a:hover {
    color: var(--primary-700);
    text-decoration: none;
}

/* Liens en mode sombre */
[data-theme="dark"] a {
    color: var(--primary-color);
    text-decoration: none;
}

[data-theme="dark"] a:hover {
    color: var(--primary-300);
    text-decoration: none;
}

/* Amélioration du contraste pour les boutons */
.btn {
    border: 2px solid transparent;
    transition: all 0.2s ease;
}

.btn:focus {
    border-color: var(--primary-600);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.2);
}

:root {
    /* Couleurs principales */
    --primary-color: #007AFF;
    --secondary-color: #5856D6;
    --accent-color: #FF2D92;
    --success-color: #34C759;
    --warning-color: #FF9500;
    --error-color: #FF3B30;
    
    /* Couleurs neutres - Light Mode */
    --white: #FFFFFF;
    --black: #000000;
    --gray-50: #F9F9F9;
    --gray-100: #F2F2F7;
    --gray-200: #E5E5EA;
    --gray-300: #D1D1D6;
    --gray-400: #C7C7CC;
    --gray-500: #AEAEB2;
    --gray-600: #8E8E93;
    --gray-700: #636366;
    --gray-800: #48484A;
    --gray-900: #1C1C1E;
    
    /* Couleurs de fond et texte */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9F9F9;
    --text-primary: #1C1C1E;
    --text-secondary: #636366;
    --text-tertiary: #8E8E93;
    
    /* Bordures et ombres */
    --border-color: #E5E5EA;
    --shadow-color: rgba(0, 0, 0, 0.1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #007AFF 0%, #5856D6 100%);
    --gradient-secondary: linear-gradient(135deg, #FF2D92 0%, #FF9500 100%);
    --gradient-dark: linear-gradient(135deg, #1C1C1E 0%, #48484A 100%);
    
    /* Typographie */
    --font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Espacements */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Bordures */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    --border-radius-full: 9999px;
    
    /* Ombres */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* Dark Mode */
[data-theme="dark"] {
    /* Couleurs de fond et texte - Dark Mode */
    --bg-primary: #1C1C1E;
    --bg-secondary: #2C2C2E;
    --text-primary: #FFFFFF;
    --text-secondary: #EBEBF5;
    --text-tertiary: #8E8E93;
    
    /* Bordures et ombres */
    --border-color: #38383A;
    --shadow-color: rgba(0, 0, 0, 0.3);
    
    /* Couleurs primaires adaptées au mode sombre */
    --primary-50: rgba(0, 122, 255, 0.1);
    --primary-100: rgba(0, 122, 255, 0.2);
    --primary-300: #64B5F6;
    --primary-600: #007AFF;
    --primary-700: #0056CC;
    
    /* Couleurs de fond supplémentaires */
    --gray-50: #2C2C2E;
    --gray-100: #3A3A3C;
    --gray-800: #1C1C1E;
    --gray-900: #000000;
    
    /* Couleurs neutres inversées */
    --white: #1C1C1E;
    --black: #FFFFFF;
    --gray-50: #2C2C2E;
    --gray-100: #38383A;
    --gray-200: #48484A;
    --gray-300: #636366;
    --gray-400: #8E8E93;
    --gray-500: #AEAEB2;
    --gray-600: #C7C7CC;
    --gray-700: #D1D1D6;
    --gray-800: #E5E5EA;
    --gray-900: #F2F2F7;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-normal);
}

[data-theme="dark"] .navbar {
    background: rgba(28, 28, 30, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.logo {
    width: 32px;
    height: 32px;
    border-radius: 6px; /* Style iOS app icon */
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    text-decoration: none;
    color: inherit;
}

.logo-link:hover {
    text-decoration: none;
    color: inherit;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-8);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.theme-toggle:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.theme-icon {
    width: 20px;
    height: 20px;
    transition: var(--transition-fast);
}

.sun-icon {
    display: block;
}

.moon-icon {
    display: none;
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-secondary);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    overflow: hidden;
    transition: background var(--transition-normal);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
    color: var(--text-primary);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-icon {
    width: 20px;
    height: 20px;
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    width: 280px;
    height: 560px;
    background: var(--gray-900);
    border-radius: 40px;
    padding: 8px;
    box-shadow: var(--shadow-xl);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.app-preview {
    width: 80%;
    height: 80%;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.finger-indicators {
    display: flex;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
}

.finger-dot {
    width: 20px;
    height: 20px;
    border-radius: var(--border-radius-full);
    background: var(--color);
    animation: pulse 2s infinite;
}

.finger-dot:nth-child(1) { animation-delay: 0s; }
.finger-dot:nth-child(2) { animation-delay: 0.5s; }
.finger-dot:nth-child(3) { animation-delay: 1s; }
.finger-dot:nth-child(4) { animation-delay: 1.5s; }

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.countdown-animation {
    display: flex;
    align-items: center;
    justify-content: center;
}

.countdown-circle {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: countdown 3s infinite;
}

.countdown-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--white);
}

@keyframes countdown {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Sections */
section {
    padding: var(--spacing-24) 0;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-6);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-12);
}

/* Features */
.features {
    background: var(--bg-primary);
}

.features-scroll {
    display: flex;
    gap: var(--spacing-6);
    overflow-x: auto;
    padding: var(--spacing-4) 0;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--gray-300) transparent;
}

.features-scroll::-webkit-scrollbar {
    height: 8px;
}

.features-scroll::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--border-radius-full);
}

.features-scroll::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--border-radius-full);
}

.features-scroll::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

.feature-card {
    flex: 0 0 320px;
    min-width: 320px;
    background: var(--bg-primary);
    padding: var(--spacing-8);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-6);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--white);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    flex-grow: 1;
}

/* App Presentation */
.app-presentation {
    background: var(--bg-primary);
    padding: var(--spacing-24) 0;
}

.presentation-scroll {
    display: flex;
    gap: var(--spacing-6);
    overflow-x: auto;
    padding: var(--spacing-4) 0;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--gray-300) transparent;
    margin-top: var(--spacing-12);
}

.presentation-scroll::-webkit-scrollbar {
    height: 8px;
}

.presentation-scroll::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--border-radius-full);
}

.presentation-scroll::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--border-radius-full);
}

.presentation-scroll::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

.presentation-item {
    flex: 0 0 400px;
    min-width: 400px;
    position: relative;
    border-radius: var(--border-radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    height: 850px; /* Hauteur ajustée pour afficher l'image complètement */
}

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

.presentation-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: var(--border-radius-2xl);
    transition: var(--transition-normal);
}

.presentation-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: var(--spacing-8) var(--spacing-6) var(--spacing-6);
    transform: translateY(100%);
    transition: var(--transition-normal);
}

.presentation-item:hover .presentation-overlay {
    transform: translateY(0);
}

.presentation-overlay h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    color: var(--white);
}

.presentation-overlay p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
}

/* Download */
.download {
    background: var(--bg-secondary);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
    flex-wrap: wrap;
}

.store-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    transition: var(--transition-fast);
    min-width: 200px;
    height: 60px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

.store-button:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.app-store-button {
    background: var(--black);
    color: var(--white);
}

.app-store-button:hover {
    background: var(--gray-800);
}

.google-play-button {
    background: var(--white);
    color: var(--gray-900);
}

.google-play-button:hover {
    background: var(--gray-50);
}

.store-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.store-icon svg {
    width: 24px;
    height: 24px;
}

.store-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.store-label {
    font-size: var(--font-size-xs);
    font-weight: 400;
    opacity: 0.8;
}

.store-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.download-info {
    text-align: center;
    color: var(--text-secondary);
}

/* Support */
.support {
    background: var(--bg-primary);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
}

.support-card {
    background: var(--bg-secondary);
    padding: var(--spacing-8);
    border-radius: var(--border-radius-xl);
    text-align: center;
    border: 1px solid var(--border-color);
}

.support-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: var(--text-primary);
}

.support-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

[data-theme="dark"] .footer {
    background: var(--gray-50);
    color: var(--text-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: var(--white);
}

[data-theme="dark"] .footer-section h4 {
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-2);
}

.footer-section ul li a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--white);
}

[data-theme="dark"] .footer-section ul li a {
    color: var(--text-tertiary);
}

[data-theme="dark"] .footer-section ul li a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--spacing-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

[data-theme="dark"] .footer-bottom {
    border-top: 1px solid var(--border-color);
}

.footer-links {
    display: flex;
    gap: var(--spacing-6);
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
}

[data-theme="dark"] .footer-links a {
    color: var(--text-tertiary);
}

[data-theme="dark"] .footer-links a:hover {
    color: var(--text-primary);
}

/* Styles des boutons en mode sombre */
[data-theme="dark"] .btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

[data-theme="dark"] .btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--bg-primary);
    transform: translateY(-2px);
}

[data-theme="dark"] .btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

[data-theme="dark"] .btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

/* Boutons de téléchargement en mode sombre */
[data-theme="dark"] .app-store-button {
    background: var(--white);
    color: var(--black);
}

[data-theme="dark"] .app-store-button:hover {
    background: var(--gray-100);
    color: var(--black);
}

[data-theme="dark"] .google-play-button {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .google-play-button:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--primary-color);
}

/* Cartes et éléments de contenu en mode sombre */
[data-theme="dark"] .feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

[data-theme="dark"] .feature-card h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .feature-card p {
    color: var(--text-secondary);
}

[data-theme="dark"] .support-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .support-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

[data-theme="dark"] .support-card h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .support-card p {
    color: var(--text-secondary);
}

[data-theme="dark"] .presentation-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .presentation-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

[data-theme="dark"] .presentation-overlay h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .presentation-overlay p {
    color: var(--text-secondary);
}

/* Navigation et sections en mode sombre */
[data-theme="dark"] .nav-menu .nav-link {
    color: var(--text-primary);
}

[data-theme="dark"] .nav-menu .nav-link:hover {
    color: var(--primary-color);
    background: var(--primary-50);
}

[data-theme="dark"] .nav-menu .nav-link.active {
    color: var(--primary-color);
    background: var(--primary-50);
}

[data-theme="dark"] .section-title {
    color: var(--text-primary);
}

[data-theme="dark"] .section-subtitle {
    color: var(--text-secondary);
}

[data-theme="dark"] .hero-title {
    color: var(--text-primary);
}

[data-theme="dark"] .hero-subtitle {
    color: var(--text-secondary);
}

/* Menu mobile en mode sombre */
[data-theme="dark"] .nav-menu {
    background: var(--bg-primary);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .nav-menu .nav-link {
    color: var(--text-primary);
}

[data-theme="dark"] .nav-menu .nav-link:hover {
    background: var(--primary-50);
    color: var(--primary-color);
}

[data-theme="dark"] .nav-overlay {
    background: rgba(0, 0, 0, 0.7);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        height: calc(100vh - 64px);
        background: var(--bg-primary);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: var(--spacing-8) 0;
        gap: var(--spacing-6);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1000;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        transform: translateX(0);
        display: flex;
    }
    
    /* Overlay pour le menu mobile */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
    }
    
    .nav-menu .nav-link {
        display: block;
        padding: var(--spacing-4) var(--spacing-6);
        font-size: var(--font-size-lg);
        border-radius: var(--border-radius-md);
        transition: all 0.2s ease;
    }
    
    .nav-menu .nav-link:hover {
        background: var(--primary-50);
        color: var(--primary-600);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .phone-mockup {
        width: 240px;
        height: 480px;
    }
    
    .feature-card {
        flex: 0 0 280px;
        min-width: 280px;
    }
    
    .support-grid {
        grid-template-columns: 1fr;
    }
    
    .presentation-item {
        flex: 0 0 350px;
        min-width: 350px;
        height: 730px; /* Proportion maintenue pour tablette */
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-3);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .btn {
        padding: var(--spacing-3) var(--spacing-5);
        font-size: var(--font-size-sm);
    }
    
    .store-button {
        min-width: 180px;
        height: 50px;
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .store-icon {
        width: 28px;
        height: 28px;
    }
    
    .store-icon svg {
        width: 20px;
        height: 20px;
    }
    
    .store-label {
        font-size: 0.7rem;
    }
    
    .store-name {
        font-size: var(--font-size-base);
    }
    
    .feature-card {
        flex: 0 0 250px;
        min-width: 250px;
    }
    
    .presentation-item {
        flex: 0 0 300px;
        min-width: 300px;
        height: 730px; /* Proportion maintenue pour mobile */
    }
    
    .presentation-overlay {
        position: static;
        transform: none;
        background: var(--gray-900);
        padding: var(--spacing-4);
    }
    
    .presentation-overlay h3 {
        font-size: var(--font-size-base);
    }
    
    .presentation-overlay p {
        font-size: var(--font-size-xs);
    }
}