/* Variables CSS */
:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-secondary: #8b5cf6;
    --color-accent: #f59e0b;
    --color-dark: #0f172a;
    --color-dark-lighter: #1e293b;
    --color-gray: #64748b;
    --color-light: #f1f5f9;
    --color-white: #ffffff;
    --color-success: #10b981;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    --border-radius: 12px;
    --border-radius-lg: 20px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
}

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

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.5rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* Header et Navigation */
header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

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

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
}

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

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

.nav-links a {
    color: var(--color-gray);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-lighter) 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-preview {
    width: 100%;
    max-width: 400px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Gemmes volantes */
.hero-image {
    position: relative;
}

.gem-container {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-gem {
    position: absolute;
    width: 40px;
    height: 40px;
    opacity: 0.9;
    animation: floatGem 4s ease-in-out infinite, sparkle 3s ease-in-out infinite;
    will-change: transform, opacity;
}

.gem-1 {
    top: 10%;
    left: 15%;
    animation-delay: 0s;
}

.gem-2 {
    top: 20%;
    right: 10%;
    animation-delay: 0.8s;
}

.gem-3 {
    bottom: 25%;
    left: 5%;
    animation-delay: 1.6s;
}

.gem-4 {
    bottom: 15%;
    right: 15%;
    animation-delay: 2.4s;
}

.gem-5 {
    top: 50%;
    left: -5%;
    animation-delay: 3.2s;
}

@keyframes floatGem {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-15px) rotate(5deg);
    }
}

@keyframes sparkle {
    0%, 100% {
        opacity: 0.7;
        filter: brightness(1);
    }
    50% {
        opacity: 1;
        filter: brightness(1.3);
    }
}

/* Features Section */
.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

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

.feature-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    text-align: center;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

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

.feature-card p {
    color: var(--color-gray);
    line-height: 1.8;
}

/* How it works Section */
.how-it-works {
    padding: var(--spacing-xl) 0;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.step {
    text-align: center;
    padding: var(--spacing-md);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
}

.step h3 {
    color: var(--color-dark);
    margin: var(--spacing-sm) 0;
}

.step p {
    color: var(--color-gray);
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light);
}

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

.benefit {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.benefit h3 {
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.benefit p {
    color: var(--color-gray);
}

/* Download Section */
.download {
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.download-subtitle {
    color: var(--color-gray);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

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

.store-button {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    min-width: 200px;
}

.store-badge {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.coming-soon {
    color: var(--color-accent);
    font-size: 0.875rem;
}

/* Footer */
footer {
    background-color: var(--color-dark);
    color: var(--color-light);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-section h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

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

.footer-section a {
    color: var(--color-light);
    display: block;
    padding: var(--spacing-xs) 0;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-dark-lighter);
    color: var(--color-gray);
}

/* Legal Pages */
.legal-page {
    padding: var(--spacing-xl) 0;
    max-width: 800px;
    margin: 0 auto;
}

.legal-page h1 {
    margin-bottom: var(--spacing-md);
}

.legal-page h2 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.75rem;
}

.legal-page h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.legal-page p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
    line-height: 1.8;
}

.legal-page ul, .legal-page ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
}

.legal-page li {
    margin-bottom: var(--spacing-xs);
}

.last-updated {
    color: var(--color-gray);
    font-style: italic;
    margin-bottom: var(--spacing-lg);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: var(--spacing-lg) auto;
    background-color: var(--color-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    background-color: var(--color-white);
    transition: all 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .nav-links {
        display: none;
    }
    
    .features-grid,
    .steps,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .btn {
        width: 100%;
    }
}