/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Couleurs principales - Bleu sombre */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-darker: #1e40af;
    --secondary: #60a5fa;
    
    /* Backgrounds */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    
    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    /* Borders */
    --border-color: #334155;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    
    /* Spacing */
    --container-width: 1200px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    font-size: 15px;
}

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

/* Hero Section */
.hero {
    padding: 160px 0 120px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    height: 1400px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 100px;
    font-size: 14px;
    color: var(--secondary);
    margin-bottom: 24px;
    animation: fadeInDown 0.6s ease-out;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-image {
    position: absolute;
    right: -100px;
    top: 50%;
    transform: translateY(-50%);
    width: 600px;
    animation: fadeInRight 0.8s ease-out 0.3s both;
}

.app-preview {
    position: relative;
}

.app-window {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
}

.window-header {
    display: flex;
    align-items: center;
    padding: 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.window-dots {
    display: flex;
    gap: 8px;
}

.window-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-tertiary);
}

.window-title {
    flex: 1;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

.window-content {
    display: flex;
    height: 400px;
}

.sidebar-preview {
    width: 200px;
    background: var(--bg-secondary);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-right: 1px solid var(--border-color);
}

.sidebar-item {
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    opacity: 0.5;
}

.sidebar-item.active {
    background: var(--primary);
    opacity: 1;
}

.content-preview {
    flex: 1;
    padding: 24px;
}

.content-header {
    height: 60px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.content-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.preview-card {
    height: 120px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    opacity: 0.3;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.15);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* Features Section */
.features {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Core Features */
.core-features {
    padding: 120px 0;
}

.core-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.core-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.core-item:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.core-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.core-item h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.core-item p {
    font-size: 14px;
    color: var(--text-muted);
}

/* Download Section */
.download-section {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.download-card {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(30, 64, 175, 0.1) 100%);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 24px;
    padding: 64px;
    text-align: center;
}

.download-content h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.download-content p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 32px;
}

.download-info {
    display: flex;
    gap: 32px;
    justify-content: center;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 14px;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 16px;
    line-height: 1.7;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-column a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.3s;
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

.footer-bottom p {
    margin-bottom: 8px;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-image {
        display: none;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-title {
        font-size: 48px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-description {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section-header h2 {
        font-size: 36px;
    }
    
    .features-grid,
    .core-grid {
        grid-template-columns: 1fr;
    }
    
    .download-card {
        padding: 40px 24px;
    }
    
    .download-content h2 {
        font-size: 32px;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: var(--primary);
    color: white;
}