:root{--bg:#0d0f14;--panel:#141924;--panel-2:#1a2130;--canvas:#0f131b;--border:#242c3d;--text:#e7eaf2;--muted:#8b95ab;--accent:#5b9cff;--frontier:#4d8dff;--expanded:#c9982f;--current:#ff5d7a;--path:#2fd47f;--start:#2fd47f;--goal:#ff9f43;--node-fill:#1a2130;--node-stroke:#4d557f;--edge:#4a5470;--mono:ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px}.mono{font-family:var(--mono)}button{color:var(--text);background:var(--panel-2);border:1px solid var(--border);cursor:pointer;border-radius:8px;padding:8px 10px;font-family:inherit;font-size:13px;transition:background .15s,border-color .15s,color .15s}button:hover:not(:disabled){background:#20293b;border-color:#38435c}button:disabled{opacity:.38;cursor:not-allowed}input[type=range]{accent-color:var(--accent)}select,input[type=text],input[type=number]{background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:8px;width:100%;padding:7px 8px;font-family:inherit;font-size:13px}select:focus,input:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.app{grid-template-rows:auto minmax(0,1fr);height:100vh;display:grid;overflow:hidden}.header{background:var(--panel);border-bottom:1px solid var(--border);align-items:center;gap:26px;padding:12px 20px;display:flex}.brand h1{letter-spacing:-.01em;margin:0;font-size:18px}.brand .star{color:var(--accent)}.brand p{color:var(--muted);margin:3px 0 0;font-size:12px}.algo-tabs{border:1px solid var(--border);background:#0f1420;border-radius:11px;gap:5px;padding:4px;display:flex}.algo-tab{color:var(--muted);background:0 0;border-color:#0000;border-radius:7px;padding:7px 15px;font-size:13px;font-weight:650}.algo-tab:hover:not(:disabled){background:var(--panel-2);color:var(--text);border-color:#0000}.algo-tab.is-active{background:var(--accent);border-color:var(--accent);color:#08122a}.algo-blurb{text-align:right;max-width:400px;color:var(--muted);margin:0 0 0 auto;font-size:12.5px;line-height:1.5}.lang-switch{border:1px solid var(--border);background:#0f1420;border-radius:10px;gap:4px;padding:4px;display:flex}.lang-switch button{color:var(--muted);letter-spacing:.06em;background:0 0;border-color:#0000;border-radius:7px;padding:5px 10px;font-size:11.5px;font-weight:750}.lang-switch button:hover:not(:disabled){background:var(--panel-2);color:var(--text);border-color:#0000}.lang-switch button.is-active{background:var(--text);border-color:var(--text);color:var(--bg)}.main{grid-template-columns:292px minmax(0,1fr) 344px;min-height:0;display:grid}.sidebar{border-right:1px solid var(--border);padding-bottom:14px;overflow-y:auto}.controls{flex-direction:column;gap:10px;padding:12px 12px 0;display:flex}.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px}.panel-title{letter-spacing:.11em;text-transform:uppercase;color:var(--muted);margin:0 0 10px;font-size:10.5px;font-weight:750}.tool-grid{grid-template-columns:repeat(3,1fr);gap:6px;display:grid}.tool{padding:9px 4px;font-size:12px}.tool.is-active{background:var(--accent);border-color:var(--accent);color:#08122a;font-weight:700}.tool.is-active:hover:not(:disabled){background:var(--accent);border-color:var(--accent)}.hint{color:var(--muted);margin:9px 0 0;font-size:11.5px;line-height:1.55}.transport{gap:6px;margin-bottom:10px;display:flex}.transport button{flex:1;padding:9px 0;font-size:15px;line-height:1}.transport button.primary{background:var(--accent);border-color:var(--accent);color:#08122a;flex:1.9;font-size:13px;font-weight:700}.transport button.primary:hover:not(:disabled){background:#74adff;border-color:#74adff}.slider-row{color:var(--muted);grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:8px;margin-top:8px;font-size:12px;display:grid}.slider-row span:last-child{text-align:right;min-width:58px}.field{color:var(--muted);grid-template-columns:52px minmax(0,1fr);align-items:center;gap:8px;margin-bottom:8px;font-size:12px;display:grid}.row{gap:8px;display:flex}.grow{flex:1}.checkbox{color:var(--muted);cursor:pointer;align-items:center;gap:8px;margin-top:11px;font-size:12.5px;display:flex}.checkbox input{accent-color:var(--accent);width:15px;height:15px}.editor{flex-direction:column;gap:6px;display:flex}.editor-head{font-size:13px;font-weight:700}.danger{color:#ff8ba0;background:#2a141b;border-color:#4a2029}.danger:hover:not(:disabled){background:#381a22;border-color:#6a2c3a}.legend{margin:10px 12px 0}.legend ul{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.legend li{align-items:center;gap:9px;font-size:12.5px;display:flex}.swatch{border:2px solid;border-radius:5px;flex:none;width:15px;height:15px}.swatch.unvisited{border-color:var(--node-stroke);background:var(--node-fill)}.swatch.frontier{border-color:var(--frontier);background:#16263f}.swatch.expanded{border-color:var(--expanded);background:#241f16}.swatch.current{border-color:var(--current);background:#3a1622}.swatch.solution{border-color:var(--path);background:#0f2b1e}.stage{flex-direction:column;min-width:0;min-height:0;display:flex}.stage-canvas{flex:1;justify-content:center;align-items:center;min-height:0;padding:14px;display:flex}.canvas{border:1px solid var(--border);background-color:var(--canvas);background-image:radial-gradient(#1e2635 1.2px,#0000 1.2px);background-size:27px 27px;border-radius:14px;width:100%;height:100%;display:block}.canvas-empty{fill:var(--muted);font-size:17px}.canvas-hit{fill:#0000;pointer-events:all}.node-circle{fill:var(--node-fill);stroke:#55617f;stroke-width:2px;transition:fill .25s,stroke .25s}.node-label{fill:var(--text);pointer-events:none;-webkit-user-select:none;user-select:none;font-size:15px;font-weight:700}.node-stats{fill:var(--muted);font-size:10px;font-family:var(--mono);paint-order:stroke;stroke:var(--canvas);stroke-width:3.5px;stroke-linejoin:round;pointer-events:none;-webkit-user-select:none;user-select:none}.node-tag{letter-spacing:.14em;pointer-events:none;-webkit-user-select:none;user-select:none;font-size:9px;font-weight:800}.node-ring{fill:none;stroke-width:2.5px;pointer-events:none}.ring-start{stroke:var(--start);stroke-dasharray:5 4}.ring-goal{stroke:var(--goal)}.node-pulse{fill:none;stroke:var(--current);stroke-width:3px;pointer-events:none;animation:1.1s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:.3;stroke-width:2px}50%{opacity:1;stroke-width:4px}}.node.is-open .node-circle{stroke:var(--frontier);fill:#16263f}.node.is-closed .node-circle{stroke:var(--expanded);fill:#241f16}.node.is-closed .node-stats{fill:#9c8a63}.node.is-path .node-circle{stroke:var(--path);fill:#10301f;stroke-width:3px}.node.is-current .node-circle{stroke:var(--current);fill:#3a1622;stroke-width:3px}.node.is-start .node-tag{fill:var(--start)}.node.is-goal .node-tag{fill:var(--goal)}.node.is-selected .node-circle{stroke:var(--accent);stroke-width:3px}.node.is-arming .node-circle{stroke:var(--accent);stroke-dasharray:4 3;stroke-width:3px}.edge-hit{stroke:#0000;stroke-width:16px;fill:none;pointer-events:stroke}.edge-line{stroke:var(--edge);stroke-width:2.5px;transition:stroke .2s,stroke-width .2s}.edge-weight{fill:var(--muted);font-size:11px;font-family:var(--mono);text-anchor:middle;paint-order:stroke;stroke:var(--canvas);stroke-width:4px;pointer-events:none;-webkit-user-select:none;user-select:none}.edge.is-touched .edge-line{stroke:#7a6430}.edge.is-active .edge-line{stroke:var(--current);stroke-width:3.5px}.edge.is-active .edge-weight{fill:var(--current)}.edge.is-path .edge-line{stroke:var(--path);stroke-width:4px}.edge.is-path .edge-weight{fill:var(--path)}.edge.is-selected .edge-line{stroke:var(--accent);stroke-width:3.5px}.arrow-default{fill:var(--edge)}.arrow-on{fill:var(--current)}.arrow-path{fill:var(--path)}.statusbar{border-top:1px solid var(--border);background:var(--panel);padding:11px 18px 13px}.status-msg{min-height:20px;font-size:13.5px;line-height:1.5}.progress{background:#0d1220;border-radius:2px;height:4px;margin-top:9px;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--accent), var(--path));height:100%;transition:width .15s linear}.trace-panel{border-left:1px solid var(--border);background:var(--bg);flex-direction:column;min-height:0;display:flex}.trace-wrap{flex:1;min-height:0;padding:8px;overflow-y:auto}.trace{flex-direction:column;gap:2px;margin:0;padding:0;list-style:none;display:flex}.trace-item{cursor:pointer;border-radius:8px;grid-template-columns:30px minmax(0,1fr);gap:8px;padding:6px 8px;font-size:12.5px;line-height:1.45;display:grid}.trace-item:hover{background:var(--panel)}.trace-item.is-past{opacity:.42}.trace-item.is-current{opacity:1;box-shadow:inset 2px 0 0 var(--accent);background:#1b2740}.trace-index{color:var(--muted);text-align:right;font-size:11px}.trace-msg{word-break:break-word}.kind-init .trace-index{color:var(--accent)}.kind-pop .trace-index{color:var(--frontier)}.kind-relax .trace-index{color:var(--path)}.kind-done .trace-index{color:var(--path);font-weight:700}.kind-done .trace-msg{color:#9df0c4}.kind-fail .trace-index{color:var(--current)}.kind-fail .trace-msg{color:#ff9aad}.trace-empty{color:var(--muted);padding:16px;font-size:13px;line-height:1.6}.stats{border-bottom:1px solid var(--border);background:var(--panel);padding:13px}.stats-head{justify-content:space-between;align-items:baseline;margin-bottom:11px;display:flex}.stats-algo{color:var(--accent);font-size:14.5px;font-weight:800}.stats-step{color:var(--muted);font-size:11.5px}.stat-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;display:grid}.stat{background:var(--panel-2);border:1px solid var(--border);border-radius:9px;min-width:0;padding:7px 8px}.stat-label{text-transform:uppercase;letter-spacing:.07em;color:var(--muted);font-size:9.5px;display:block}.stat-value{font-size:15px;font-weight:650}.stats-note{color:var(--muted);margin:11px 0 0;font-size:11.5px}.warn{color:#ffc17a;background:#2a1f10;border:1px solid #4c3719;border-radius:8px;margin:9px 0 0;padding:8px 9px;font-size:11.5px;line-height:1.55}@media (width<=1180px){.app{height:auto;overflow:visible}.main{grid-template-columns:1fr}.stage{order:-1}.stage-canvas{height:58vh;padding:10px}.sidebar,.trace-panel{border:none;border-top:1px solid var(--border);overflow:visible}.trace-wrap{max-height:46vh}.header{flex-wrap:wrap;gap:12px}.algo-blurb{text-align:left;width:100%;max-width:none;margin-left:0}}@media (prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}}