:root {
            --primary-color: #667eea;
            --secondary-color: #764ba2;
            --accent-color: #d53f8c;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background-color: #f8f9fa;
        }
        
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 100px 0 80px;
        }
        
        .program-card {
            border: none;
            border-radius: 12px;
            transition: all 0.3s ease;
            height: 100%;
            background: white;
        }
        
        .program-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.15);
        }
        
        .program-icon {
            width: 50px;
            height: 50px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }
        
        .badge-custom {
            background: rgba(255,255,255,0.2);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
        }
        
        .filter-btn.active {
            background: var(--primary-color) !important;
            border-color: var(--primary-color) !important;
            color: white !important;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }

        .duration-badge {
            background: #e9ecef;
            color: #495057;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* Custom media queries for perfect responsive layout */
        @media (min-width: 1200px) {
            .program-col {
                flex: 0 0 auto;
                width: 25%;
            }
        }

        @media (max-width: 1199px) and (min-width: 768px) {
            .program-col {
                flex: 0 0 auto;
                width: 50%;
            }
        }

        @media (max-width: 767px) {
            .program-col {
                flex: 0 0 auto;
                width: 100%;
            }
            
            .hero-section {
                padding: 80px 0 60px;
            }
            
            .filter-buttons {
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 10px;
            }
            
            .filter-btn {
                white-space: nowrap;
            }
        }

        /* Smooth animations */
        .program-card {
            animation: fadeInUp 0.6s ease;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }