:root{color:#172033;font-synthesis:none;text-rendering:optimizelegibility;background:#edf2f7;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html,body,#root{width:100%;min-width:320px;height:100%;margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}.app-shell{grid-template-rows:64px minmax(0,1fr) 34px;width:100%;height:100%;display:grid;overflow:hidden}.topbar{z-index:5;color:#fff;background:#0f172a;grid-template-columns:260px 1fr auto;align-items:center;gap:16px;padding:0 18px;display:grid;box-shadow:0 2px 10px #0f172a38}.brand{align-items:center;gap:10px;display:flex}.brand-mark{color:#101827;background:#f2cd37;border:3px solid #fff;border-radius:9px;place-items:center;width:38px;height:38px;font-size:22px;font-weight:900;display:grid;box-shadow:0 2px #a77700}.brand div{line-height:1.05;display:grid}.brand strong{font-size:18px}.brand span{color:#aebbd0;letter-spacing:.08em;text-transform:uppercase;margin-top:4px;font-size:11px}.toolbar{justify-content:center;gap:8px;display:flex}.toolbar button,.layer-controls button,.action-stack button{color:#172033;background:#fff;border:1px solid #cbd5e1;border-radius:8px;padding:8px 13px;font-weight:700}.toolbar button{color:#fff;background:#1e293b;border-color:#354158}.toolbar button:hover:not(:disabled){background:#334155}.piece-count{color:#d9e2ef;text-align:right;min-width:90px;font-size:13px}.workspace{grid-template-columns:260px minmax(360px,1fr) 240px;min-height:0;display:grid}.panel{z-index:3;background:#f8fafc;min-height:0;padding:18px;overflow:auto}.parts-panel{border-right:1px solid #d5deea}.properties-panel{border-left:1px solid #d5deea}.panel h2{color:#101827;margin:0;font-size:18px}.panel h3{color:#556176;letter-spacing:.08em;text-transform:uppercase;margin:20px 0 9px;font-size:12px}.panel-help{color:#67748a;margin:7px 0 18px;font-size:12px;line-height:1.45}.part-section+.part-section{margin-top:18px}.part-section h3{margin-top:0}.part-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.part-card{color:#364258;text-align:left;background:#fff;border:1px solid #d4deea;border-radius:10px;gap:8px;min-height:92px;padding:10px;font-size:11px;display:grid}.part-card:hover{border-color:#8495ac;transform:translateY(-1px)}.part-card.active{border-color:#1667d9;box-shadow:0 0 0 2px #1667d929}.part-preview{background:linear-gradient(145deg,#e33a29,#b90e00);border:2px solid #7e0000;border-radius:5px;place-self:center;width:48px;max-height:42px;box-shadow:inset 0 5px #ffffff2e,0 4px 7px #2832462e}.canvas-wrap{background:#dce7f2;min-width:0;min-height:0;position:relative;overflow:hidden}.canvas-tip{color:#eaf1fa;pointer-events:none;background:#0f172ac2;border-radius:7px;padding:7px 10px;font-size:11px;position:absolute;bottom:14px;right:16px}.selected-card{background:#fff;border:1px solid #d3deea;border-radius:10px;gap:6px;margin-top:14px;padding:13px;display:grid}.selected-card span{color:#647187;font-size:12px}.color-grid{grid-template-columns:repeat(5,1fr);gap:8px;display:grid}.color-swatch{aspect-ratio:1;border:2px solid #fff;border-radius:50%;box-shadow:0 0 0 1px #bcc7d4}.color-swatch.active{box-shadow:0 0 0 3px #1667d9}.move-grid{grid-template-columns:repeat(3,42px);grid-template-areas:".n.""w c e"".s.";justify-content:center;gap:6px;display:grid}.move-grid button{color:#263248;background:#fff;border:1px solid #c8d3e0;border-radius:8px;width:42px;height:38px;font-weight:900}.move-grid button:hover{background:#e9f1fb}.north{grid-area:n}.west{grid-area:w}.center{grid-area:c}.east{grid-area:e}.south{grid-area:s}.layer-controls,.action-stack{grid-template-columns:1fr 1fr;gap:8px;margin-top:14px;display:grid}.action-stack{grid-template-columns:1fr}.action-stack .danger{color:#fff;background:#c93327;border-color:#b42318}.empty-selection{color:#78869a;text-align:center;place-items:center;min-height:220px;display:grid}.empty-icon{color:#a9b7c8;font-size:44px}.statusbar{z-index:5;color:#5f6c81;background:#f8fafc;border-top:1px solid #d5deea;justify-content:space-between;align-items:center;gap:16px;padding:0 14px;font-size:11px;display:flex}@media (width<=900px){.app-shell{grid-template-rows:auto minmax(0,1fr) 34px}.topbar{grid-template-columns:1fr auto;padding:10px 12px}.toolbar{grid-area:2/1/auto/-1;justify-content:flex-start;overflow-x:auto}.piece-count{grid-area:1/2}.workspace{grid-template-columns:185px minmax(320px,1fr)}.properties-panel{display:none}.part-grid{grid-template-columns:1fr}}