*{margin:0;padding:0;box-sizing:border-box}body{overflow:hidden;font-family:Arial,sans-serif}#container{width:100vw;height:100vh;position:relative}#scene{width:100%;height:100%;display:block}#overlay{position:absolute;top:20px;left:20px;background:#000000b3;color:#fff;padding:15px 20px;border-radius:8px;font-size:14px;min-width:180px}#overlay h2{margin-bottom:10px;font-size:18px;border-bottom:1px solid rgba(255,255,255,.3);padding-bottom:8px}#overlay p{margin:5px 0}#overlay span{color:#0f8;font-weight:700}#controls{position:absolute;top:20px;right:20px;background:#000000b3;color:#fff;padding:15px 20px;border-radius:8px;font-size:14px;min-width:220px}#controls h3{margin-bottom:15px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.3);padding-bottom:8px}#controls label{display:block;margin-bottom:5px;margin-top:10px;color:#ccc}#controls select{width:100%;padding:8px;border:none;border-radius:4px;font-size:14px;background:#444;color:#fff}.slider-container{display:flex;align-items:center;gap:10px;margin-bottom:5px}.slider-container input[type=range]{flex:1;height:6px;border-radius:3px;background:#444;outline:none;-webkit-appearance:none}.slider-container input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:#0a5;cursor:pointer}.slider-container span{min-width:60px;text-align:right;color:#0f8;font-weight:700}#buttons{display:flex;gap:10px;margin-top:15px}#buttons button{flex:1;padding:12px;border:none;border-radius:4px;font-size:14px;cursor:pointer;font-weight:700;transition:background .2s}#startBtn{background:#0a5;color:#fff}#startBtn:hover{background:#0c6}#startBtn:disabled{background:#555;cursor:not-allowed}#resetBtn{background:#a50;color:#fff}#resetBtn:hover{background:#c60}#status{margin-top:15px;padding:8px;text-align:center;background:#ffffff1a;border-radius:4px;font-size:12px;color:#aaa}#credits{position:absolute;bottom:20px;left:50%;transform:translate(-50%);background:#00000080;color:#ffffffb3;padding:8px 16px;border-radius:4px;font-size:12px}