*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{color:#1a1a1a;background:#faf9f7;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}header{background:#fff;border-bottom:1px solid #f0ece6;justify-content:space-between;align-items:center;padding:1rem 1.5rem;display:flex}header h1{color:#1a1a1a;letter-spacing:-.3px;font-size:20px;font-weight:600}header h1 span{color:#c97b2e}header p{color:#888;font-size:13px}.export-btn{color:#fff;cursor:pointer;background:#c97b2e;border:none;border-radius:8px;padding:10px 24px;font-size:14px;font-weight:700;transition:all .2s;box-shadow:0 2px 8px #c97b2e4d}.export-btn:hover{background:#b56c25;transform:translateY(-1px);box-shadow:0 4px 12px #c97b2e66}.main{grid-template-columns:300px 1fr;height:calc(100vh - 57px);display:grid}.panel{background:#fff;border-right:1px solid #e8e4de;flex-direction:column;display:flex;overflow-y:auto}.panel-section{border-bottom:1px solid #f0ece6;padding:1.25rem}.panel-section h2{text-transform:uppercase;letter-spacing:.8px;color:#aaa;margin-bottom:12px;font-size:13px;font-weight:600}#drop-zone{text-align:center;cursor:pointer;background:#faf9f7;border:2px dashed #ddd;border-radius:10px;padding:1.5rem 1rem;transition:all .15s}#drop-zone:hover,#drop-zone.over{background:#fdf6ed;border-color:#c97b2e}#drop-zone .dz-icon{margin-bottom:8px;font-size:28px}#drop-zone .dz-title{color:#333;margin-bottom:3px;font-size:13px;font-weight:500}#drop-zone .dz-sub{color:#aaa;font-size:11px}#drop-zone.has-file .dz-title{color:#c97b2e}#file-input{display:none}.ctrl{margin-bottom:16px}.ctrl:last-child{margin-bottom:0}.ctrl label{color:#666;justify-content:space-between;margin-bottom:8px;font-size:14px;display:flex}.ctrl label span{color:#1a1a1a;font-weight:600}.ctrl input[type=range]{-webkit-appearance:none;background:0 0;border-radius:3px;width:100%;height:6px;margin:10px 0}.ctrl input[type=range]:focus{outline:none}.ctrl input[type=range]::-webkit-slider-runnable-track{cursor:pointer;background:0 0;width:100%;height:6px}.ctrl input[type=range]::-webkit-slider-thumb{cursor:pointer;-webkit-appearance:none;background:#c97b2e;border-radius:50%;width:16px;height:16px;margin-top:-5px}#status-msg{color:#c97b2e;padding:.75rem 1.25rem;font-size:12px;font-style:italic;display:none}.viewer{background:#f0ede8;flex-direction:column;display:flex}#canvas-wrap{flex:1;position:relative}#three-canvas{cursor:grab;width:100%;height:100%;display:block}#three-canvas:active{cursor:grabbing}.empty-state{color:#bbb;pointer-events:auto;background:0 0;border:2px dashed #ccc;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;padding:3rem 4rem;transition:all .2s;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.empty-state:hover,#canvas-wrap.over .empty-state{background:#c97b2e0d;border-color:#c97b2e;transform:translate(-50%,-50%)scale(1.02)}.empty-state .big{opacity:.8;margin-bottom:1rem;font-size:64px}.empty-state p{font-size:14px}#view-controls{z-index:10;flex-direction:column;align-items:center;gap:5px;display:flex;position:absolute;top:14px;right:14px}#view-cube{flex-direction:column;gap:5px;display:flex}.vcbtn{cursor:pointer;box-sizing:border-box;background:#f0e8dce0;border:1px solid #96826966;border-radius:8px;width:56px;height:56px;padding:3px;transition:background .1s,border-color .1s;display:block}.vcbtn:hover{background:#e8d5b0fa;border-color:#968269b3}.vcbtn.active{background:#d2b98cfa;border-color:#968269e6}.vcwire-vis{fill:none;stroke:#7a6550;stroke-width:1.2px}.vcwire-hid{fill:none;stroke:#7a6550;stroke-width:.7px;stroke-dasharray:2 2;opacity:.5}.vchighlight{stroke:#7a6550;stroke-width:1.2px;fill:#c9a96e;opacity:.82}