@import"https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Syne:wght@400;600;800&display=swap";:root,[data-theme=dark]{--bg: #0a0c10;--surface: #12161e;--surface2: #1a2030;--border: #252d3d;--text: #e2e8f4;--text-dim: #6b7a99;--text-muted: #3d4d66;--accent: #00e5ff;--accent-glow: #00e5ff44;--green: #00ffa3;--yellow: #ffd166;--red: #ff4d6d;--purple: #a855f7;--shadow: 0 12px 40px #0008;--c-empty: #151b27;--c-wall: #0d1117;--c-start: #00ffa3;--c-end: #ff4d6d;--c-visited: #0077aa;--c-path: #ffd166;--c-weight: #6d28d9;--tag-w-bg: #1a3a4a;--tag-u-bg: #2a1a3a;--tag-g-bg: #1a3a2a;--tag-n-bg: #3a1a1a;--overlay: rgba(0,0,0,.72);--tour-bg: #14192a;--tour-hdr: #0e1220;--tour-tip: #0d2230;--tour-tip-border: #005577}[data-theme=light]{--bg: #f0f2f7;--surface: #ffffff;--surface2: #e8ecf4;--border: #d0d8e8;--text: #1a2035;--text-dim: #5a6a88;--text-muted: #a0aec0;--accent: #0077cc;--accent-glow: #0077cc33;--green: #00aa66;--yellow: #cc8800;--red: #cc2244;--purple: #7733cc;--shadow: 0 8px 32px #00000018;--c-empty: #e4e9f4;--c-wall: #2d3a55;--c-start: #00aa66;--c-end: #cc2244;--c-visited: #3399cc;--c-path: #cc8800;--c-weight: #7733cc;--tag-w-bg: #ddf0ff;--tag-u-bg: #eedbff;--tag-g-bg: #d5f5e8;--tag-n-bg: #ffe0e5;--overlay: rgba(0,0,0,.45);--tour-bg: #ffffff;--tour-hdr: #f4f7ff;--tour-tip: #e8f4ff;--tour-tip-border: #99ccee}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden}body{background:var(--bg);color:var(--text);font-family:Syne,sans-serif;-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}.app-shell{display:flex;flex-direction:column;height:100%}.navbar{height:56px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:5px;padding:0 12px;flex-shrink:0;position:relative;z-index:100;overflow:visible;transition:background .25s,border-color .25s}.nav-brand{font-weight:800;font-size:15px;letter-spacing:-.3px;color:var(--accent);text-shadow:0 0 18px var(--accent-glow);margin-right:6px;white-space:nowrap}.nav-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text);font-family:Syne,sans-serif;font-size:12px;font-weight:600;padding:5px 10px;border-radius:6px;cursor:pointer;transition:background .15s,border-color .15s,color .15s;white-space:nowrap}.nav-btn:hover:not(:disabled){background:var(--border);border-color:var(--accent);color:var(--accent)}.nav-btn:disabled{opacity:.4;cursor:not-allowed}.nav-util{display:flex;gap:4px;margin-left:auto;flex-shrink:0}.nav-icon-btn{width:32px;height:32px;border-radius:8px;border:1px solid var(--border);background:var(--surface2);color:var(--text);font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s,border-color .15s}.nav-icon-btn:hover{background:var(--border);border-color:var(--accent)}.nav-icon-btn.theme-toggle{font-size:16px}.dropdown-trigger{display:flex;align-items:center;gap:5px}.caret{font-size:10px}.nav-dropdown{position:relative}.dropdown-menu{position:absolute;top:calc(100% + 6px);left:0;background:var(--surface);border:1px solid var(--border);border-radius:10px;min-width:230px;padding:5px;z-index:999;box-shadow:var(--shadow);transition:background .25s}.dropdown-item{display:flex;align-items:center;justify-content:space-between;width:100%;background:none;border:none;color:var(--text);font-family:Syne,sans-serif;font-size:12px;padding:7px 10px;border-radius:6px;cursor:pointer;text-align:left;transition:background .12s}.dropdown-item:hover{background:var(--surface2)}.dropdown-item.active{background:var(--border);color:var(--accent)}.dropdown-divider{height:1px;background:var(--border);margin:5px 6px}.dropdown-icon-legend{padding:6px 8px 4px;display:flex;flex-direction:column;gap:5px}.dil-row{display:flex;align-items:flex-start;gap:7px;font-size:10.5px;color:var(--text-dim);line-height:1.4}.dil-row .tag{flex-shrink:0;margin-top:1px}.algo-tags{display:flex;gap:4px}.tag{font-size:10px;font-family:Space Mono,monospace;padding:1px 5px;border-radius:3px;font-weight:700;flex-shrink:0}.tag-weighted{background:var(--tag-w-bg);color:var(--accent)}.tag-unweighted{background:var(--tag-u-bg);color:var(--purple)}.tag-guaranteed{background:var(--tag-g-bg);color:var(--green)}.tag-no-guarantee{background:var(--tag-n-bg);color:var(--red)}.mode-toggle{border-color:var(--border)}.mode-toggle.active-weight{border-color:var(--purple);color:var(--purple);background:#1e1030}[data-theme=light] .mode-toggle.active-weight{background:#f0e8ff}.btn-clear{color:var(--text-dim)}.btn-reset{color:var(--red);border-color:var(--tag-n-bg)}.btn-reset:hover:not(:disabled){background:var(--tag-n-bg);border-color:var(--red);color:var(--red)}.btn-visualize{background:var(--accent);color:#000;border-color:var(--accent);font-weight:800;font-size:12px;padding:5px 14px;box-shadow:0 0 18px var(--accent-glow)}.btn-visualize:hover:not(:disabled){filter:brightness(1.1);box-shadow:0 0 28px var(--accent-glow);color:#000}.btn-visualize:disabled{box-shadow:none;opacity:.5}.stats-chip{font-family:Space Mono,monospace;font-size:10px;padding:4px 9px;border-radius:20px;white-space:nowrap}.stats-ok{background:var(--tag-g-bg);color:var(--green);border:1px solid #1a5a2a}.stats-fail{background:var(--tag-n-bg);color:var(--red);border:1px solid #5a1a1a}[data-theme=light] .stats-ok{border-color:#8ca}[data-theme=light] 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0 10px color-mix(in srgb,var(--c-end) 60%,transparent);border-radius:3px;transform:rotate(45deg)}.cell-weight{background:var(--c-weight)!important;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--c-weight) 70%,white)}@keyframes visitedFade{0%{transform:scale(.3);opacity:.3;background:var(--accent)}50%{transform:scale(1.1)}to{transform:scale(1);background:var(--c-visited);opacity:1}}@keyframes pathPop{0%{transform:scale(.6)}60%{transform:scale(1.2)}to{transform:scale(1)}}@keyframes wallPop{0%{transform:scale(.5)}to{transform:scale(1)}}.legend-bar{background:var(--surface);border-top:1px solid var(--border);display:flex;align-items:center;gap:14px;padding:0 16px;height:46px;flex-shrink:0;overflow:hidden;transition:background .25s,border-color 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var(--border);border-radius:16px;width:min(620px,95vw);max-height:90vh;display:flex;flex-direction:column;box-shadow:var(--shadow),0 0 60px var(--accent-glow);animation:modalIn .25s cubic-bezier(.34,1.56,.64,1);overflow:hidden;transition:background .25s,border-color .25s}@keyframes modalIn{0%{transform:scale(.88) translateY(20px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}.tour-header{display:flex;align-items:center;gap:14px;padding:20px 22px 16px;background:var(--tour-hdr);border-bottom:1px solid var(--border);flex-shrink:0}.tour-icon{font-size:32px;line-height:1;flex-shrink:0}.tour-header-text{flex:1;min-width:0}.tour-step-count{font-family:Space Mono,monospace;font-size:10px;color:var(--text-dim);margin-bottom:3px;letter-spacing:.5px}.tour-title{font-size:20px;font-weight:800;color:var(--text);letter-spacing:-.4px;line-height:1.2}.tour-close{width:32px;height:32px;border-radius:8px;border:1px solid var(--border);background:var(--surface2);color:var(--text-dim);font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s,color .15s}.tour-close:hover{background:var(--border);color:var(--red)}.tour-progress-track{height:3px;background:var(--border);flex-shrink:0}.tour-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--green));transition:width .35s cubic-bezier(.4,0,.2,1);box-shadow:0 0 8px var(--accent-glow)}.tour-dots{display:flex;justify-content:center;gap:6px;padding:10px 0 4px;flex-shrink:0}.tour-dot{width:8px;height:8px;border-radius:50%;border:none;background:var(--border);cursor:pointer;transition:background .2s,transform .2s;padding:0}.tour-dot:hover{background:var(--text-dim)}.tour-dot.done{background:color-mix(in srgb,var(--accent) 50%,var(--border))}.tour-dot.active{background:var(--accent);transform:scale(1.3);box-shadow:0 0 6px var(--accent-glow)}.tour-body{padding:18px 22px;overflow-y:auto;flex:1;font-size:13.5px;line-height:1.65;color:var(--text-dim);display:flex;flex-direction:column;gap:10px}.tour-body p{color:var(--text-dim)}.tour-body strong{color:var(--text)}.tour-body a{color:var(--accent)}.tour-legend{display:flex;flex-direction:column;gap:7px;margin-top:4px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:12px 14px}.tour-legend-row{display:flex;align-items:flex-start;gap:12px;font-size:12.5px;color:var(--text-dim)}.tour-legend-row strong{color:var(--text)}.tl-swatch{width:18px;height:18px;display:inline-block;flex-shrink:0;margin-top:1px;border-radius:2px}.tour-algo-grid{display:flex;flex-direction:column;gap:5px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:10px 12px;margin:4px 0}.tour-algo-row{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-dim)}.tour-tag-key{display:flex;gap:14px;flex-wrap:wrap;font-size:11px;color:var(--text-dim);padding:6px 0 0}.tour-tag-key span{display:flex;align-items:center;gap:5px}.tour-list{display:flex;flex-direction:column;gap:6px;padding:10px 14px;background:var(--surface2);border:1px solid var(--border);border-radius:10px}.tour-list div{font-size:12.5px;color:var(--text-dim);line-height:1.5}.tour-list strong{color:var(--text)}.tour-tip{background:var(--tour-tip);border:1px solid var(--tour-tip-border);border-radius:8px;padding:9px 13px;font-size:12.5px;color:var(--accent);line-height:1.5}[data-theme=light] .tour-tip{color:#058}.tour-footer{display:flex;align-items:center;justify-content:space-between;padding:14px 22px;border-top:1px solid var(--border);flex-shrink:0;background:var(--tour-hdr)}.tour-nav{display:flex;gap:8px}.tour-btn{font-family:Syne,sans-serif;font-size:13px;font-weight:700;padding:8px 18px;border-radius:8px;cursor:pointer;transition:all .15s;border:1px solid transparent}.tour-btn:disabled{opacity:.4;cursor:not-allowed}.tour-btn-ghost{background:none;border-color:var(--border);color:var(--text-dim)}.tour-btn-ghost:hover:not(:disabled){border-color:var(--text-dim);color:var(--text)}.tour-btn-secondary{background:var(--surface2);border-color:var(--border);color:var(--text)}.tour-btn-secondary:hover:not(:disabled){background:var(--border)}.tour-btn-primary{background:var(--accent);color:#000;border-color:var(--accent);box-shadow:0 0 16px var(--accent-glow)}.tour-btn-primary:hover:not(:disabled){filter:brightness(1.1);box-shadow:0 0 24px var(--accent-glow)}