.pf{max-width:64rem;color:var(--foreground);flex-direction:column;gap:1rem;margin:0 auto;display:flex}.pf-head h1{letter-spacing:-.02em;font-size:1.9rem;font-weight:700}.pf-sub{color:var(--muted);margin-top:.6rem;font-size:.95rem;line-height:1.6}.pf-algos{flex-wrap:wrap;gap:.5rem;display:flex}.pf-algo{font-family:var(--font-mono);border:1px solid var(--border);background:var(--surface);color:var(--muted);cursor:pointer;border-radius:9px;align-items:center;gap:.35rem;padding:.45rem .85rem;font-size:.82rem;transition:color .15s,border-color .15s,background .15s;display:inline-flex}.pf-algo:hover:not(:disabled){color:var(--foreground);border-color:var(--accent)}.pf-algo.active{background:var(--accent);border-color:var(--accent);color:var(--accent-foreground);font-weight:600}.pf-algo:disabled{opacity:.5;cursor:not-allowed}.pf-w{opacity:.8;font-size:.7rem}.pf-blurb{color:var(--muted);min-height:1.4em;font-size:.88rem;line-height:1.5}.pf-controls{flex-wrap:wrap;align-items:center;gap:.6rem;display:flex}.pf-btn{font-family:var(--font-mono);border:1px solid var(--border);background:var(--surface);color:var(--foreground);cursor:pointer;border-radius:9px;padding:.5rem .9rem;font-size:.82rem;transition:border-color .15s,transform 50ms}.pf-btn:hover:not(:disabled){border-color:var(--accent)}.pf-btn:active:not(:disabled){transform:translateY(1px)}.pf-btn:disabled{opacity:.5;cursor:not-allowed}.pf-btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-foreground);font-weight:600}.pf-slider{color:var(--muted);align-items:center;gap:.5rem;font-size:.8rem;display:inline-flex}.pf-slider input[type=range]{accent-color:var(--accent);cursor:pointer}.pf-grid{border:1px solid var(--border);background:var(--border);-webkit-user-select:none;user-select:none;aspect-ratio:41/21;border-radius:10px;gap:1px;padding:1px;display:grid;overflow:hidden}.pf-cell{background:var(--background);cursor:pointer;justify-content:center;align-items:center;font-size:.7rem;line-height:1;transition:background .1s;display:flex}.pf-cell.weight{background:color-mix(in srgb, #f59e0b 22%, var(--background));color:#b45309}.pf-cell.wall{background:var(--foreground);animation:.15s pf-wall}@keyframes pf-wall{0%{transform:scale(.4)}}.pf-cell.visited{background:color-mix(in srgb, var(--accent) 38%, var(--background));animation:.3s pf-visit}@keyframes pf-visit{0%{background:color-mix(in srgb, var(--accent) 70%, transparent);border-radius:50%;transform:scale(.3)}to{border-radius:0}}.pf-cell.path{background:#fbbf24;animation:.3s pf-path}@keyframes pf-path{0%{transform:scale(.4)}}.pf-cell.start{color:#052e1a;background:#34d399;font-weight:700}.pf-cell.end{color:#4c0519;background:#fb7185;font-weight:700}.pf-stats{font-family:var(--font-mono);color:var(--muted);flex-wrap:wrap;gap:1.25rem;font-size:.82rem;display:flex}.pf-stats strong{color:var(--foreground)}.pf-stats .ok{color:#34d399}.pf-stats .warn{color:#ef4444}.pf-idle{font-family:var(--font-mono);color:var(--muted);font-size:.82rem}