           bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-color);
            transform-origin: left;
            animation: progress 2s infinite;
            display: none;
        }
        
        .cell-running .execution-progress {
            display: block;
        }
        
        @keyframes progress {
            0% { transform: scaleX(0); }
            50% { transform: scaleX(1); }
            100% { transform: scaleX(0); }
   