:root {
            --primary-color: #007BFF;
            --secondary-color: #28a745;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
        }
        
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: #f8f9fa;
            color: #212529;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        
        .navbar-brand {
            font-weight: 700;
        }
        
        header {
            background: linear-gradient(135deg, var(--primary-color), #0056b3);
            color: white;
            padding: 3rem 0;
            margin-bottom: 2rem;
        }
        
        .app-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 1.5rem;
        }
        
        .app-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .app-icon {
            width: 150px;
            height: 150px;
            object-fit: contain;
            border-radius: 12px;
        }
        
        .btn-download {
            background-color: var(--secondary-color);
            border: none;
            padding: 0.5rem 1.5rem;
            font-weight: 500;
        }
        
        .btn-download:hover {
            background-color: #218838;
        }
        
        .language-badge {
            font-size: 0.75rem;
            padding: 0.25rem 0.5rem;
            margin-right: 0.5rem;
        }
        
        .features-section {
            background-color: white;
            padding: 3rem 0;
            margin: 3rem 0;
        }
        
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 2rem 0;
            margin-top: auto;
        }
        
        .social-icon {
            color: white;
            font-size: 1.5rem;
            margin: 0 0.5rem;
            transition: color 0.3s ease;
        }
        
        .social-icon:hover {
            color: var(--primary-color);
        }