:root {
    --primary-color: #007AFF;
    --text-color: #1D1D1F;
    --background-color: #F5F5F7;
    --card-background: #FFFFFF;
    --border-radius: 16px;
    --spacing-unit: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    text-align: center;
    padding: calc(var(--spacing-unit) * 8) 0;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 3);
    line-height: 1.2;
}

.subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: #666;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.hero-buttons {
    display: flex;
    gap: calc(var(--spacing-unit) * 3);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}

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

.cta-button.secondary:hover {
    background-color: rgba(0, 122, 255, 0.1);
    box-shadow: none;
}

/* Apps Section */
.apps {
    padding: calc(var(--spacing-unit) * 12) 0;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 6);
    margin-top: calc(var(--spacing-unit) * 4);
}

.app-card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 4);
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s;
}

.app-card:hover {
    transform: translateY(-4px);
}

.app-icon {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.app-icon img {
    border-radius: 22px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.app-card h2 {
    font-size: 1.5rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.app-card p {
    color: #666;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.app-links {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.app-store-button {
    background-color: var(--primary-color);
    color: white;
    padding: calc(var(--spacing-unit) * 2);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s;
}

.app-store-button:hover {
    background-color: #0066CC;
}

.privacy-link {
    color: #666;
    text-decoration: none;
    font-size: 0.9rem;
}

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

/* Footer */
footer {
    background-color: var(--card-background);
    padding: calc(var(--spacing-unit) * 6) 0;
    margin-top: calc(var(--spacing-unit) * 8);
}

footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--spacing-unit) * 3);
}

.email-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
}

.social-links {
    display: flex;
    gap: calc(var(--spacing-unit) * 3);
}

.social-links a {
    color: #666;
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        min-height: 60vh;
    }
    
    .app-grid {
        grid-template-columns: 1fr;
    }
    
    .app-card {
        max-width: 400px;
        margin: 0 auto;
    }
}