:root{--bg: #0d1117;--panel: #161b22;--panel-2: #1c2330;--border: #2d3646;--text: #e6edf3;--muted: #8b98a9;--accent: #2dd4bf;--accent-dark: #0f766e;--danger: #f87171;font-size:14px}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif}#app{display:flex;height:100vh}#sidebar{width:350px;flex:none;overflow-y:auto;background:var(--panel);border-right:1px solid var(--border);padding:16px;display:flex;flex-direction:column;gap:14px}header h1{margin:0;font-size:20px;letter-spacing:.4px}header .sub{margin:4px 0 0;color:var(--muted);font-size:12px}h2{font-size:12px;text-transform:uppercase;letter-spacing:.8px;color:var(--muted);margin:0 0 8px}section{border-top:1px solid var(--border);padding-top:12px}.drop{border:1.5px dashed var(--border);border-radius:10px;padding:18px 12px;text-align:center;cursor:pointer;display:flex;flex-direction:column;gap:4px;color:var(--muted);transition:border-color .15s,background .15s}.drop strong{color:var(--text)}.drop.dragover,.drop:hover{border-color:var(--accent);background:#2dd4bf0f}.drop a{color:var(--accent)}.section-head{display:flex;justify-content:space-between;align-items:baseline}.badge{background:var(--panel-2);border-radius:8px;padding:1px 7px;font-size:11px;color:var(--text)}#parts-list{list-style:none;margin:0;padding:0;max-height:200px;overflow-y:auto;display:flex;flex-direction:column;gap:4px}#parts-list li{display:flex;align-items:center;gap:8px;background:var(--panel-2);border-radius:8px;padding:5px 8px;font-size:12px}#parts-list .swatch{width:12px;height:12px;border-radius:3px;flex:none}#parts-list .meta{flex:1;min-width:0}#parts-list .meta .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#parts-list .meta .dims{color:var(--muted);font-size:11px}#parts-list input[type=number]{width:52px}label.row{display:flex;flex-direction:column;gap:4px;margin-bottom:10px;font-size:12.5px}label.row>span:first-child{color:var(--text)}.hint{display:block;font-style:normal;color:var(--muted);font-size:11px}label.checkbox{flex-direction:row;align-items:flex-start;gap:8px}label.checkbox input{margin-top:2px}.row.pair{display:flex;gap:10px;margin-bottom:10px}.row.pair label{flex:1;display:flex;flex-direction:column;gap:4px;font-size:12.5px}input[type=number],select{background:var(--panel-2);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:6px 8px;font:inherit;width:100%}.unit-wrap{position:relative;display:block}.unit-wrap i{position:absolute;right:8px;top:50%;transform:translateY(-50%);font-style:normal;color:var(--muted);font-size:11px;pointer-events:none}.unit-wrap input{padding-right:34px}input:focus,select:focus{outline:1px solid var(--accent);border-color:var(--accent)}details{border:1px solid var(--border);border-radius:8px;padding:8px 10px}details summary{cursor:pointer;color:var(--muted);font-size:12px;user-select:none}details[open] summary{margin-bottom:8px}button{font:inherit;border:1px solid var(--border);background:var(--panel-2);color:var(--text);border-radius:8px;padding:8px 12px;cursor:pointer}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.45;cursor:default}button.primary{background:var(--accent-dark);border-color:var(--accent-dark);font-weight:600;width:100%}button.primary:hover:not(:disabled){background:#13857c}button.ghost{padding:2px 8px;font-size:11px;color:var(--muted)}.actions{display:flex;flex-direction:column;gap:8px}progress{width:100%;height:8px;accent-color:var(--accent)}.busy{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.busy[hidden]{display:none}.spinner{width:14px;height:14px;flex:none;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.stats{font-size:12.5px;background:var(--panel-2);border-radius:8px;padding:8px 10px;margin-bottom:10px;display:grid;grid-template-columns:auto 1fr;gap:3px 12px}.stats b{font-weight:600;color:var(--accent)}.stats span{color:var(--muted)}#messages{display:flex;flex-direction:column;gap:6px}.msg{font-size:12px;border-radius:8px;padding:7px 10px;background:var(--panel-2);border-left:3px solid var(--accent)}.msg.warn{border-left-color:#fbbf24}.msg.error{border-left-color:var(--danger)}footer{margin-top:auto;padding-top:10px}footer p{color:var(--muted);font-size:11px;margin:0}#viewport{flex:1;position:relative;min-width:0}#view{width:100%;height:100%;display:block;touch-action:none;cursor:grab}#view:active{cursor:grabbing}#tabs{position:absolute;top:12px;left:12px;z-index:2;display:flex;gap:6px;align-items:center}.tab{padding:6px 14px;border-radius:999px;background:#161b22d9;backdrop-filter:blur(4px)}.tab.active{background:var(--accent-dark);border-color:var(--accent-dark);font-weight:600}#view-hint{color:var(--muted);font-size:11px;margin-left:8px}@media (max-width: 760px){#app{flex-direction:column}#sidebar{width:100%;max-height:55vh}}