:root {
            --primary-color: #00b8a9;  /* Aqua Line color */
            --secondary-color: #4caf50; /* Green spaces */
            --accent-color: #f8c291;
            --text-color: #333;
            --light-color: #f9f9f9;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-color);
        }
        
        .primary-bg {
            background-color: var(--primary-color);
        }
        
        .secondary-bg {
            background-color: var(--secondary-color);
        }
        
        .accent-bg {
            background-color: var(--accent-color);
        }
        
        .section-title {
            position: relative;
            display: inline-block;
        }
        
        .section-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -5px;
            width: 100%;
            height: 3px;
            background-color: var(--primary-color);
        }
        
        .card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .metro-line {
            height: 8px;
            background: linear-gradient(to right, #00b8a9, #4caf50);
            border-radius: 4px;
        }
        
        .metro-station {
            width: 16px;
            height: 16px;
            background-color: white;
            border: 3px solid var(--primary-color);
            border-radius: 50%;
            cursor: pointer;
            position: relative;
            z-index: 10;
        }
        
        .metro-station:hover {
            background-color: var(--primary-color);
        }
        
        .tab-button.active {
            background-color: var(--primary-color);
            color: white;
        }
        
        .tab-content {
            display: none;
        }
        
        .tab-content.active {
            display: block;
        }
        
        @media print {
            .no-print {
                display: none;
            }
        }