* {
    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: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.app-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: #f0f0f0;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #333;
}

.disclaimer { 
    font-size: 0.9rem;
    margin-top: 3rem;
    margin-bottom: 0;
    padding: 1rem 2rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.4;
}

.disclaimer a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: underline;
}

main {
    padding-top: 80px;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    color: white;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.hero-icon {
    width: 120px;
    height: 120px;
    border-radius: 24px;
    margin-bottom: 1.5rem;
    background: #f0f0f0;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.hero h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.download-btn {
    display: block;
    transition: transform 0.2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
}

.download-btn img {
    height: 60px;
    width: auto;
}

.screenshots {
    background: white;
    padding: 4rem 2rem;
    position: relative;
    z-index: 2;
}

.screenshots-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.screenshots h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #333;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.screenshot {
    width: 100%;
    height: auto;
    background: #f0f0f0;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    object-fit: contain;
}

.features {
    background: #f8f9fa;
    padding: 4rem 2rem;
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.features h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: left;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.feature h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

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

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

footer p {
    margin: 0 auto;
    max-width: 800px;
    line-height: 1.6;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero-icon {
        width: 80px;
        height: 80px;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .screenshot-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    nav {
        padding: 1rem;
    }
}

/* Platform-specific styles */
.ios-btn {
    display: none;
}

.android-btn {
    display: none;
}

.show-ios .ios-btn {
    display: block;
}

.show-android .android-btn {
    display: block;
}

.show-both .ios-btn,
.show-both .android-btn {
    display: block;
}