und-color: var(--vietmap-primary);
            color: white;
        }
        
        .dropdown-option.highlighted {
            background-color: #e7f3ff;
        }
        
        .dropdown-option .option-title {
            font-weight: 500;
            display: block;
        }
        
        .dropdown-option .option-subtitle {
            font-size: 12px;
            color: #6c757d;
            margin-top: 2px;
        }
        
        .dropdown-option.selected .option-subtitle {
            col