#app{width:100vw;height:100vh;position:relative}.color-controls{position:absolute;bottom:20px;left:50%;transform:translate(-50%);display:flex;gap:10px}.color-controls button{width:40px;height:40px;border:none;border-radius:50%;cursor:pointer}.color-controls button:hover{transform:scale(1.1)}.opacity-control{display:flex;align-items:center;gap:10px;margin-top:10px}.opacity-control label{color:#fff;font-size:14px;font-weight:700;text-shadow:1px 1px 2px rgba(0,0,0,.7);white-space:nowrap}.opacity-control input[type=range]{width:120px;height:6px;border-radius:3px;background:#ddd;outline:none;cursor:pointer}.opacity-control input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:#ffffff;border:2px solid #333;cursor:pointer;box-shadow:0 2px 4px #0000004d}.opacity-control input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#ffffff;border:2px solid #333;cursor:pointer;box-shadow:0 2px 4px #0000004d}.handle-controls{position:absolute;top:20px;right:20px;background:rgba(255,255,255,.9);padding:15px;border-radius:10px;box-shadow:0 2px 10px #0000001a;max-width:200px}.handle-controls h3{margin:0 0 10px;font-size:14px;color:#333}.handle-controls button{display:block;width:100%;margin:5px 0;padding:8px 12px;border:1px solid #ddd;background:#f5f5f5;border-radius:5px;cursor:pointer;font-size:12px;transition:background-color .2s}.handle-controls button:hover{background:#e0e0e0}.handle-controls button:active{background:#d0d0d0}.handle-controls p{margin:0;font-size:12px;color:#666;font-style:italic}.screwhead-controls{position:absolute;top:20px;left:20px;background:rgba(255,255,255,.9);padding:15px;border-radius:10px;box-shadow:0 2px 10px #0000001a;max-width:200px}.screwhead-controls h3{margin:0 0 10px;font-size:14px;color:#333}.screwhead-controls button{display:block;width:100%;margin:5px 0;padding:8px 12px;border:1px solid #ddd;background:#f0f8ff;border-radius:5px;cursor:pointer;font-size:12px;transition:background-color .2s}.screwhead-controls button:hover{background:#e6f3ff}.screwhead-controls button:active{background:#d6ebff}.screwhead-controls p{margin:0;font-size:12px;color:#666;font-style:italic}