:root{color-scheme:light;--bg: #e7ebef;--panel: #fbfcfd;--line: #d3dae1;--ink: #1a1f24;--muted: #5f6b77;--accent: #0b7a5c;--accent-soft: #e0f1ec;--danger: #b3261e;font:13px/1.4 system-ui,Segoe UI,Arial,sans-serif;color:var(--ink)}*{box-sizing:border-box}html,body{height:100%;margin:0;overflow:hidden;background:var(--bg)}[hidden]{display:none!important}#app{display:grid;height:100%;grid-template-columns:236px minmax(0,1fr) 264px;grid-template-rows:46px minmax(0,1fr) auto 26px;grid-template-areas:"toolbar toolbar toolbar" "palette stage inspector" "palette bom inspector" "status status status"}.toolbar{grid-area:toolbar;display:flex;align-items:center;gap:16px;padding:0 12px;background:var(--panel);border-bottom:1px solid var(--line)}.brand{font-size:16px;letter-spacing:-.01em;color:var(--accent)}.group{display:flex;align-items:center;gap:4px}.push{margin-left:auto}#zoom{width:44px;text-align:center;color:var(--muted);font-variant-numeric:tabular-nums}button{height:30px;padding:0 10px;font:inherit;color:inherit;background:#fff;border:1px solid var(--line);border-radius:5px;cursor:pointer}button:hover:not(:disabled){background:#f0f3f6}button:disabled{opacity:.45;cursor:default}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:1px}button.primary{color:#fff;background:var(--accent);border-color:var(--accent)}button.primary:hover:not(:disabled){background:#096650}button.danger{color:var(--danger)}#palette{grid-area:palette;display:flex;flex-direction:column;min-height:0;background:var(--panel);border-right:1px solid var(--line)}#palette-search{margin:10px;width:auto}#palette-list{flex:1;overflow-y:auto;padding:0 10px 12px}h2{margin:12px 0 6px;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}.palette-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.symbol{display:flex;flex-direction:column;align-items:center;gap:4px;height:78px;padding:6px 4px;font-size:11px;line-height:1.15;text-align:center;cursor:grab;touch-action:none}.symbol svg{flex:none;width:38px;height:36px}#stage{grid-area:stage;position:relative;min-width:0;min-height:0;overflow:hidden}#canvas{display:block;width:100%;height:100%;touch-action:none;-webkit-user-select:none;user-select:none}#canvas.panning{cursor:grabbing}#canvas.connecting{cursor:crosshair}.port{r:var(--port-r, 5px);fill:#fff;stroke:var(--accent);stroke-width:1.5;vector-effect:non-scaling-stroke;cursor:crosshair}.port:hover{fill:var(--accent)}.port.port-ring{r:var(--ring-r, 12px);fill:none;stroke-opacity:0;stroke-width:6;pointer-events:stroke}.port.port-ring:hover{fill:none;stroke-opacity:.8}[data-item]{cursor:move}[data-pipe]{cursor:pointer}#empty{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);max-width:340px;padding:18px 20px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:8px}#empty p{margin:0 0 12px;font-size:14px}#empty button{height:auto;padding:6px 10px}#inspector{grid-area:inspector;overflow-y:auto;padding:4px 12px 16px;background:var(--panel);border-left:1px solid var(--line)}.field{display:block;margin-bottom:9px}.field>span{display:block;margin-bottom:3px;color:var(--muted)}.input-row{display:flex;align-items:center;gap:6px}.input-row em{flex:none;font-style:normal;color:var(--muted)}input:not([type=checkbox]),select,textarea{width:100%;min-width:0;padding:5px 7px;font:inherit;color:inherit;background:#fff;border:1px solid var(--line);border-radius:5px}textarea{resize:vertical}.check{display:flex;align-items:center;gap:6px;margin:10px 0}.actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}.muted{color:var(--muted)}#bom{grid-area:bom;max-height:34vh;overflow:auto;background:var(--panel);border-top:1px solid var(--line)}#bom table{width:100%;border-collapse:collapse}#bom th{position:sticky;top:0;padding:6px 10px;text-align:left;background:#eef1f4}#bom td{padding:4px 10px;border-top:1px solid var(--line)}#status{grid-area:status;display:flex;align-items:center;gap:16px;padding:0 12px;overflow:hidden;white-space:nowrap;font-size:12px;color:var(--muted);background:var(--panel);border-top:1px solid var(--line)}#status .hint{margin-left:auto;overflow:hidden;text-overflow:ellipsis}#mobile-nav,#selection-bar,.narrow-only{display:none}@media(max-width:820px){:root{font-size:14px;--nav: calc(54px + env(safe-area-inset-bottom)) }#app{height:100dvh;grid-template-columns:minmax(0,1fr);grid-template-rows:48px minmax(0,1fr) var(--nav);grid-template-areas:"toolbar" "stage" "nav"}#status,.wide-only{display:none}.narrow-only{display:block}.toolbar{gap:10px;padding:0 10px;overflow-x:auto;scrollbar-width:none}.toolbar>*{flex:none}.toolbar .history{order:-1}.toolbar .brand{order:-2}.push{margin-left:0}button{height:38px}input:not([type=checkbox]),select,textarea{padding:9px 10px;font-size:16px}#mobile-nav{grid-area:nav;z-index:3;display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:7px 10px calc(7px + env(safe-area-inset-bottom));background:var(--panel);border-top:1px solid var(--line)}#mobile-nav button{height:40px;padding:0 4px;font-weight:600}body[data-panel=palette] [data-tool=panel-palette],body[data-panel=inspector] #mobile-nav [data-tool=panel-inspector],body[data-panel=bom] [data-tool=panel-bom]{color:var(--accent);background:var(--accent-soft);border-color:var(--accent)}#palette,#inspector,#bom{position:fixed;right:0;bottom:var(--nav);left:0;z-index:2;max-height:none;height:min(62dvh,calc(100dvh - var(--nav) - 110px));background:var(--panel);border:0;border-top:1px solid var(--line);border-radius:14px 14px 0 0;box-shadow:0 -8px 24px #141e2829;transform:translateY(calc(100% + var(--nav)));transition:transform .18s ease-out;overscroll-behavior:contain}body[data-panel=palette] #palette,body[data-panel=inspector] #inspector,body[data-panel=bom] #bom{transform:none}#palette-search{flex:none}.palette-grid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr))}.symbol{touch-action:pan-y;cursor:pointer}#selection-bar{position:absolute;right:10px;bottom:10px;left:10px;display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:6px;background:var(--panel);border:1px solid var(--line);border-radius:10px;box-shadow:0 4px 16px #141e2824}#selection-bar[hidden]{display:none}#selection-bar button{padding:0 4px}body[data-panel]:not([data-panel=""]) #selection-bar{display:none}#empty{width:calc(100% - 32px)}}@media(prefers-reduced-motion:reduce){#palette,#inspector,#bom{transition:none}}@media print{#app{display:none}}