:root{--bg: #0f141a;--panel: #171e26;--panel-2: #1e2732;--line: #2b3742;--text: #e6edf3;--muted: #8b9aa8;--accent: #4c9ffe;--cut: #4aa3df;--fill: #e2725b;--existing: #b8a06a;--design: #6fcf97;--warn: #f2c94c;--danger: #eb5757;--radius: 8px;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:14px/1.45 Segoe UI,system-ui,-apple-system,sans-serif}button{font:inherit;color:inherit;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:7px 12px;cursor:pointer}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#07121e;font-weight:600}button.ghost{background:transparent}button.active{border-color:var(--accent);background:#23364a}input,select{font:inherit;color:inherit;background:#121922;border:1px solid var(--line);border-radius:6px;padding:6px 8px;width:100%}label.field{display:block;margin-bottom:10px}label.field>span{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}.app{display:grid;grid-template-rows:auto auto 1fr;height:100%}.topbar{display:flex;align-items:center;gap:16px;padding:10px 16px;background:var(--panel);border-bottom:1px solid var(--line)}.topbar h1{font-size:15px;margin:0;font-weight:600;white-space:nowrap}.topbar .filename{color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.spacer{flex:1}.steps{display:flex;gap:6px;padding:8px 16px;background:var(--panel-2);border-bottom:1px solid var(--line);overflow-x:auto}.step{display:flex;align-items:center;gap:8px;padding:4px 12px;border-radius:20px;color:var(--muted);font-size:13px;white-space:nowrap}.step.done{color:var(--design)}.step.current{background:#23364a;color:var(--text)}.step .num{display:inline-flex;width:20px;height:20px;align-items:center;justify-content:center;border-radius:50%;border:1px solid currentColor;font-size:11px}.workspace{display:grid;grid-template-columns:330px 1fr 250px;min-height:0}.side{background:var(--panel);border-right:1px solid var(--line);overflow-y:auto;padding:14px}.side.right{border-right:none;border-left:1px solid var(--line)}.stage{position:relative;min-width:0;background:#0b1015}.stage canvas{display:block;width:100%;height:100%}.stage-toolbar{position:absolute;top:12px;left:12px;display:flex;gap:6px;z-index:5;flex-wrap:wrap;max-width:calc(100% - 24px)}.stage-hint{position:absolute;bottom:12px;left:12px;right:12px;background:#0c1219e6;border:1px solid var(--line);border-radius:var(--radius);padding:8px 12px;font-size:13px;color:var(--muted);z-index:5}.block{margin-bottom:18px}.block>h2{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 8px}.stat-row{display:flex;justify-content:space-between;padding:5px 0;border-bottom:1px dashed var(--line)}.stat-row:last-child{border-bottom:none}.stat-row .value{font-variant-numeric:tabular-nums;font-weight:600}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:8px}.metric{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:10px}.metric .label{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.04em}.metric .value{font-size:19px;font-weight:700;font-variant-numeric:tabular-nums;margin-top:2px}.metric.cut .value{color:var(--cut)}.metric.fill .value{color:var(--fill)}.alert{border-left:3px solid var(--warn);background:#241f10;border-radius:4px;padding:8px 10px;font-size:13px;margin-bottom:8px}.alert.danger{border-color:var(--danger);background:#2a1414}.alert.ok{border-color:var(--design);background:#12241a}.legend{display:flex;flex-direction:column;gap:6px}.legend label{display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer}.legend input{width:auto}.swatch{width:12px;height:12px;border-radius:3px;flex:none}table.sheet{width:100%;border-collapse:collapse;font-size:12px;font-variant-numeric:tabular-nums}table.sheet th,table.sheet td{border-bottom:1px solid var(--line);padding:6px;text-align:right}table.sheet th:first-child,table.sheet td:first-child{text-align:left}table.sheet thead th{color:var(--muted);font-weight:500;font-size:11px;text-transform:uppercase}table.sheet tfoot td{font-weight:700;border-top:2px solid var(--line)}.chip{display:inline-block;padding:1px 7px;border-radius:10px;font-size:11px;border:1px solid var(--line);color:var(--muted)}.chip.existing{color:var(--existing);border-color:var(--existing)}.chip.design{color:var(--design);border-color:var(--design)}.chip.unknown{color:var(--warn);border-color:var(--warn)}.row{display:flex;gap:8px;align-items:center}.row>*{flex:1}.upload{max-width:560px;margin:8vh auto;text-align:center}.dropzone{border:2px dashed var(--line);border-radius:14px;padding:48px 24px;background:var(--panel);cursor:pointer;transition:border-color .15s}.dropzone.hot{border-color:var(--accent);background:#14202c}.muted{color:var(--muted)}.small{font-size:12px}.list{list-style:none;margin:0;padding:0;max-height:260px;overflow-y:auto}.list li{display:flex;justify-content:space-between;gap:8px;padding:6px 4px;border-bottom:1px solid var(--line);cursor:pointer;font-size:13px}.list li:hover{background:var(--panel-2)}.list li.selected{background:#23364a}.spinner{width:18px;height:18px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}