* {
    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-color: #f8f9fa;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 2rem 1rem;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

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

.breadcrumb {
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: #667eea;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.app-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.app-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.app-card h2 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.app-card p {
    margin-bottom: 1.5rem;
    color: #666;
}

.btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 6px;
    transition: opacity 0.2s ease;
}

.btn:hover {
    opacity: 0.9;
}

.app-details {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.app-details h2 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 2rem;
}

.app-details h3 {
    color: #333;
    margin: 2rem 0 1rem 0;
    font-size: 1.3rem;
}

.app-details ul, .app-details ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.app-details li {
    margin-bottom: 0.5rem;
}

.app-details strong {
    color: #667eea;
}

.external-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border: 2px solid #667eea;
    border-radius: 6px;
    display: inline-block;
    transition: all 0.2s ease;
}

.external-link:hover {
    background-color: #667eea;
    color: white;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 3rem;
}

footer a {
    color: #667eea;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    header p {
        font-size: 1rem;
    }
    
    .apps-grid {
        grid-template-columns: 1fr;
    }
    
    .app-card, .app-details {
        padding: 1.5rem;
    }
}