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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Header and Navigation */
header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: #007AFF;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #007AFF;
}

/* Main content spacing */
main {
    margin-top: 70px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #007AFF 0%, #5856D6 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.btn-primary {
    background: white;
    color: #007AFF;
}

.btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #007AFF;
    transform: translateY(-2px);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: #f8f9fa;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #007AFF;
}

.feature p {
    color: #666;
    line-height: 1.6;
}

/* Stats Section */
.stats {
    padding: 80px 0;
    background: #007AFF;
    color: white;
    text-align: center;
}

.stats h2 {
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Download Section */
.download {
    padding: 100px 0;
    text-align: center;
    background: white;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #333;
}

.download p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 40px;
}

.download-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.store-button {
    display: inline-block;
    padding: 15px 40px;
    background: #333;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.store-button:hover {
    background: #007AFF;
    transform: translateY(-2px);
}

.download-note {
    color: #999;
    font-style: italic;
}

/* Footer */
footer {
    background: #333;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #007AFF;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #007AFF;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #555;
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 20px;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 15px 20px;
    }
    
    .nav-links {
        margin-top: 15px;
        gap: 15px;
    }
    
    main {
        margin-top: 120px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .feature {
        padding: 30px 20px;
    }
}