:root{font-family:Inter,ui-sans-serif,system-ui,Arial,sans-serif;color:#1c2c45;background:#f3f6fb;--surface:#fff;--bg:#f3f6fb;--text:#1c2c45;--border:#e1e7f0;--muted:#75839a;--accent:#4168f5}*{box-sizing:border-box}body{margin:0}body.dark{--surface:#18253b;--bg:#101a2c;--text:#e9eef9;--border:#31415a;--muted:#9caac1;background:var(--bg);color:var(--text)}button,input{font:inherit}button{cursor:pointer;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:9px;padding:9px 12px}button:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}button:disabled{opacity:.4;cursor:not-allowed}.primary{background:var(--accent);color:white;border-color:var(--accent)}.primary:hover:not(:disabled){color:white;background:#3057e2}.big{padding:14px 22px;font-weight:650}header{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;background:var(--surface);border-bottom:1px solid var(--border);gap:20px}.brand{display:flex;align-items:center;gap:11px;min-width:205px}.brand b{font-size:19px;letter-spacing:-.5px}.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:1px;text-transform:uppercase}.logo{background:#4168f5;color:white;font-size:25px;border-radius:12px;padding:6px 12px}.actions,nav{display:flex;gap:9px;align-items:center}.nav{border:0}.nav.active{color:var(--accent);background:var(--bg);font-weight:700}main{height:calc(100vh - 72px);display:grid;grid-template-columns:186px minmax(0,1fr) 230px}.sidebar,.properties{background:var(--surface);padding:18px 13px;overflow:auto}.sidebar{border-right:1px solid var(--border);display:flex;flex-direction:column}.properties{border-left:1px solid var(--border)}.section-title{font-size:11px;letter-spacing:1.1px;font-weight:750;color:var(--muted);display:flex;justify-content:space-between;margin-bottom:20px}.thumbs{flex:1;overflow:auto}.hint,.muted{color:var(--muted);font-size:12px}.thumbnail{display:flex;flex-direction:column;align-items:center;gap:7px;margin-bottom:15px;cursor:pointer;font-size:12px;color:var(--muted)}.thumbnail canvas{max-width:118px;box-shadow:0 2px 9px #0002;border:2px solid transparent}.thumbnail.active canvas{border-color:var(--accent)}.sidebottom{display:grid;gap:8px}.sidebottom button{font-size:12px;text-align:left}.workspace{min-width:0;display:flex;flex-direction:column}.toolbar{padding:12px;display:flex;gap:6px;flex-wrap:wrap;background:var(--surface);border-bottom:1px solid var(--border)}.toolbar button{font-size:12px;padding:8px}.toolbar button.selected{background:#e8edff;color:#335adf;border-color:#a7b9ff}.sep{width:1px;background:var(--border);margin:2px 5px}.canvasWrap{flex:1;overflow:auto;display:flex;align-items:flex-start;justify-content:center;padding:30px;position:relative;background:var(--bg)}.empty{text-align:center;align-self:center;max-width:450px}.emptyIcon{font-size:52px;color:var(--accent)}.empty h1{font-size:27px;letter-spacing:-1px}.empty p{color:var(--muted);line-height:1.6}.paper{position:relative;box-shadow:0 12px 40px #0002;background:white;flex:none;line-height:0}.paper canvas{display:block}#overlay{position:absolute;inset:0;overflow:hidden;line-height:normal}.obj{position:absolute;cursor:move;user-select:none;box-sizing:border-box;white-space:pre-wrap;touch-action:none}.obj.active{outline:2px dashed #4168f5;outline-offset:3px}.obj.text{font-family:Arial,sans-serif;line-height:1.2}.obj.rect{background:transparent}.obj.highlight{background:rgba(255,222,65,.4)}.obj.whiteout{background:white}.obj.line{transform-origin:0 0}.obj img{width:100%;height:100%;object-fit:contain;pointer-events:none}footer{height:54px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:var(--surface);border-top:1px solid var(--border);font-size:12px}footer>div{display:flex;align-items:center;gap:12px}.properties label{display:block;font-size:12px;color:var(--muted);margin:18px 0}.properties input{display:block;margin-top:8px;width:100%;padding:10px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text)}.properties input[type=color]{padding:3px;height:40px}.properties p{color:var(--muted);font-size:12px;line-height:1.6}.note{background:var(--bg);padding:12px;border-radius:10px;font-size:11px;color:var(--muted);line-height:1.6}.hidden{display:none!important}.toolsView{max-width:1150px;margin:0 auto;padding:55px 25px}.toolsHero{text-align:center;margin-bottom:35px}.toolsHero h1{font-size:38px;letter-spacing:-1.5px}.toolsHero p,.toolGrid p,.coming{color:var(--muted)}.toolGrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.toolGrid article{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px}.tileIcon{font-size:30px;color:var(--accent)}.toolGrid article p{min-height:50px;font-size:13px;line-height:1.6}.coming{text-align:center;margin:40px auto;font-size:13px}dialog{border:1px solid var(--border);border-radius:16px;padding:24px;background:var(--surface);color:var(--text);max-width:95vw}dialog::backdrop{background:#0c1632a9}#signCanvas{background:white;border:1px dashed #aaa;width:min(480px,80vw);touch-action:none}.dialogActions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}#toast{position:fixed;bottom:20px;right:20px;z-index:100;background:#1d304e;color:white;padding:13px 20px;border-radius:10px;display:none;max-width:380px;box-shadow:0 5px 22px #0003}@media(max-width:1000px){main{grid-template-columns:140px minmax(0,1fr)}.properties{display:none}}@media(max-width:650px){header{height:auto;flex-wrap:wrap;padding:10px;gap:8px}.brand{min-width:0}.brand small{display:none}nav{order:3;width:100%;justify-content:center}.actions{margin-left:auto}.actions button{font-size:11px;padding:8px}main{height:calc(100vh - 104px);grid-template-columns:minmax(0,1fr)}.sidebar{display:none}.toolbar{overflow-x:auto;flex-wrap:nowrap}.toolbar button{white-space:nowrap}.canvasWrap{padding:12px;justify-content:flex-start}.toolGrid{grid-template-columns:1fr}.toolsView{padding:20px}}

/* v0.4 settings dialog */
.settingsDialog{width:min(460px,calc(100vw - 32px));max-height:90vh;overflow:auto;border:1px solid #a7b2c2;border-radius:16px;padding:24px;box-shadow:0 24px 70px #0005;background:#fff;color:#15243e}.settingsDialog::backdrop{background:#101a30a8}.settingsDialog form{display:grid;gap:12px}.settingsDialog label{display:grid;gap:5px;font-size:13px;font-weight:600}.settingsDialog input,.settingsDialog select{width:100%;padding:9px;border:1px solid #a7b2c2;border-radius:8px;background:#fff;color:#15243e}.settingsDialog p{margin:0;color:#52647b;font-size:13px}.settingsDialog h2{margin:0}.settingsDialog .dialogActions{display:flex;justify-content:flex-end;gap:8px;margin-top:8px}

/* v0.6 */
.searchResults{max-height:260px;overflow:auto;display:grid;gap:7px}.searchResult{display:block;text-align:left;white-space:normal;line-height:1.5;font-size:12px}.searchResult:hover{background:#eef2ff}#searchStatus{font-size:12px;color:#52647b}#infoContent{max-height:50vh;overflow:auto;overflow-wrap:anywhere}#infoContent p{font-size:13px;border-bottom:1px solid #d9e0ea;padding:6px 0}
/* v0.8 — organized tool catalog */
.toolsView{max-width:1240px;margin:auto}.toolsControls{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:18px 0 24px}.toolsControls input{flex:1;min-width:190px;padding:12px 14px;border:1px solid var(--border,#cbd5e1);border-radius:12px;background:var(--panel,#fff);color:inherit}.toolFilters{display:flex;flex-wrap:wrap;gap:7px}.toolFilters button{border-radius:999px;padding:9px 12px}.toolFilters button.active{background:#3159dc;color:white}.toolSection{margin:20px 0 28px}.toolSection h2{font-size:1.15rem;margin:0 0 6px}.toolSection>p{opacity:.72;margin:0 0 12px}.toolSection[hidden],.toolGrid article[hidden]{display:none!important}.toolGrid article{display:flex;flex-direction:column;gap:8px}.toolGrid article button{margin-top:auto}.toolsCount{font-size:13px;opacity:.7}.toolEmpty{padding:30px;border:1px dashed #94a3b8;border-radius:12px;text-align:center}.toolEmpty[hidden]{display:none}.toolGrid{margin-top:12px}

/* v1.0 selected-object inspector */
.selectedPanel{padding:12px;margin:16px 0;border:1px solid var(--border);border-radius:12px;background:var(--bg)}.selectedPanel[hidden]{display:none}.selectedPanel h3{margin:0;font-size:13px}.selectedPanel label{margin:10px 0}.selectedPanel button{width:100%;margin:5px 0;font-size:12px}.resizeGrip{position:absolute;right:-8px;bottom:-8px;width:16px;height:16px;background:#4168f5;border:2px solid white;border-radius:4px;cursor:nwse-resize;z-index:5;touch-action:none}.obj.active{z-index:2}