:root{--bg-0: #15171c;--bg-1: #1b1e25;--bg-2: #232730;--border: #2e333d;--text: #e6e8ec;--text-dim: #9298a3;--accent: #5b8cff;--accent-dim: #2c3a5e;--danger: #e5604d;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;height:100%;background:var(--bg-0);color:var(--text)}body{overflow-y:hidden;overflow-x:auto}button,input,select{font-family:inherit;color:inherit}button{background:var(--bg-2);border:1px solid var(--border);border-radius:6px;padding:6px 10px;cursor:pointer;font-size:13px}button:hover{border-color:var(--accent)}button.active{background:var(--accent-dim);border-color:var(--accent);color:#fff}button:disabled{opacity:.4;cursor:not-allowed}input[type=text],input[type=number]{background:var(--bg-0);border:1px solid var(--border);border-radius:4px;padding:4px 6px;width:100%}label{font-size:12px;color:var(--text-dim)}.app-layout{display:grid;grid-template-columns:260px minmax(360px,1fr) 300px;grid-template-rows:48px 1fr;height:100vh;min-width:920px;width:100%}.app-header{grid-column:1 / -1;display:flex;align-items:center;gap:12px;padding:0 12px;background:var(--bg-1);border-bottom:1px solid var(--border)}.app-header h1{font-size:15px;font-weight:600;letter-spacing:.05em;margin:0}.panel{background:var(--bg-1);overflow-y:auto;overflow-x:hidden;min-width:0;padding:12px;display:flex;flex-direction:column;gap:16px}.panel-left{border-right:1px solid var(--border)}.panel-right{border-left:1px solid var(--border)}.stage{position:relative;background:var(--bg-0)}.section{display:flex;flex-direction:column;gap:6px}.section h2{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);margin:0}.dropzone{border:1px dashed var(--border);border-radius:8px;padding:20px 10px;text-align:center;font-size:12px;color:var(--text-dim);cursor:pointer}.dropzone.dragover{border-color:var(--accent);color:var(--accent);background:var(--accent-dim)}.object-list{display:flex;flex-direction:column;gap:4px}.object-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 8px;border-radius:6px;font-size:13px;cursor:pointer;border:1px solid transparent;min-width:0}.object-row:hover{background:var(--bg-2)}.object-row.selected{background:var(--accent-dim);border-color:var(--accent)}.object-row span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.row-buttons{display:flex;gap:6px;flex:0 0 auto}.toolbar{position:absolute;top:12px;left:12px;right:12px;display:flex;flex-wrap:wrap;gap:6px;background:#1b1e25e6;border:1px solid var(--border);border-radius:8px;padding:6px;z-index:10}.toolbar-group{display:flex;gap:4px;padding-right:6px;border-right:1px solid var(--border)}.toolbar-group:last-child{border-right:none;padding-right:0}.field-row{display:flex;gap:6px;align-items:center;min-width:0}.field-row label{flex:0 0 16px}.field-row select,.field-row button{flex:0 0 auto;min-width:0}.field-row input{flex:1 1 auto;min-width:0;width:auto}.field-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;min-width:0}.field-grid .field-row input{width:100%}.dim-readout{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;font-size:13px;text-align:center}.dim-readout div{background:var(--bg-2);border-radius:6px;padding:6px 0}.color-row{display:flex;align-items:center;gap:8px}input[type=color]{width:32px;height:24px;padding:0;border:1px solid var(--border);border-radius:4px;background:none}.share-box{display:flex;gap:6px;min-width:0}.share-box input{flex:1 1 auto;min-width:0}.share-box button{flex:0 0 auto}.measure-label{background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:2px 6px;border-radius:4px;white-space:nowrap;pointer-events:none;transform:translateY(-150%)}.empty-state{color:var(--text-dim);font-size:13px;text-align:center;margin-top:40%}