x;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            max-height: calc(100vh - 100px);
            overflow-y: auto;
            position: sticky;
            top: 20px;
        }
        
        .preview-panel {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            min-height: 600px;
        }
        
        .control-group {
            margin-bottom: 25px;
            padding-bottom: 20px;
