:root{--paper: #ffffff;--bg: #f4f6f8;--panel: #ffffff;--ink: #1b2430;--muted: #5b6776;--line: #d5dbe2;--accent: #1f5f9e;--accent-ink: #ffffff;--pressure: #1565c0;--live: #c62828;--hyd: #b4471c;--select: #e07b00;--warn: #a35a00;--error: #b3261e;--grid: #c3ccd6;color-scheme:light;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--paper: #151a20;--bg: #0e1216;--panel: #181e25;--ink: #e3e8ee;--muted: #9aa6b4;--line: #2c3540;--accent: #5d9ce0;--accent-ink: #0e1216;--pressure: #64a8ff;--live: #ff6b6b;--hyd: #ff9466;--select: #ffaa3b;--warn: #ffb35c;--error: #ff8a80;--grid: #2f3843;color-scheme:dark}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--ink);overscroll-behavior:none}button,select,input{font:inherit;color:inherit;touch-action:manipulation}.app{display:grid;height:100dvh;grid-template-columns:260px 1fr 280px;grid-template-rows:auto 1fr auto;grid-template-areas:"tb tb tb" "lib ws props" "sb sb sb"}.toolbar{grid-area:tb;display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;padding:6px 10px;background:var(--panel);border-bottom:1px solid var(--line)}.brand{font-weight:700;margin-right:8px}.group{display:flex;align-items:center;gap:2px}.group.end{margin-inline-start:auto}.tool{display:inline-flex;align-items:center;gap:6px;min-height:40px;min-width:40px;padding:6px 8px;border:1px solid transparent;border-radius:8px;background:transparent;cursor:pointer}.tool:hover:not(:disabled){background:var(--bg)}.tool:focus-visible,select:focus-visible,input:focus-visible,.library-item:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.tool:disabled{opacity:.4;cursor:default}.tool.active{border-color:var(--accent)}.tool.primary{background:var(--accent);color:var(--accent-ink)}.tool-label{font-size:13px}.group:not(.sim-controls) 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0;background:var(--panel);max-width:220px}.tab.active{background:var(--paper);box-shadow:inset 0 2px 0 var(--accent)}.tab-title{border:none;background:none;padding:6px 4px 6px 10px;min-height:34px;cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.tab-close,.tab-new{border:none;background:none;min-width:32px;min-height:34px;cursor:pointer;font-size:16px;color:var(--muted)}.canvas{direction:ltr;width:100%;height:100%;display:block;touch-action:none;user-select:none;-webkit-user-select:none;color:var(--ink);cursor:default}.canvas.placing{cursor:copy}.grid-dot{fill:var(--grid)}.component .component-hit{fill:transparent;stroke:none}.component.selected .component-hit{stroke:var(--select);stroke-width:1.2;stroke-dasharray:4 3}.component:not(.interactive){cursor:move}.canvas.simulating .component{cursor:default}.component.interactive{cursor:pointer}.component.interactive 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var(--line);background:var(--panel)}.grafcet-panel>header{display:flex;align-items:center;gap:12px;padding:6px 10px;border-bottom:1px solid var(--line)}.grafcet-panel>header button{margin-left:auto;background:none;border:0;font-size:18px;color:var(--muted);cursor:pointer;min-width:32px;min-height:32px}.gf-outputs{color:var(--muted);font-size:13px}.grafcet-empty{padding:16px;display:flex;flex-direction:column;align-items:flex-start;gap:8px}.grafcet-body{flex:1;display:flex;min-height:0}.grafcet-chart{flex:1;overflow:auto;background:var(--paper);touch-action:pan-x pan-y}.grafcet-chart 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