/* Decoding Visualizer — "Prime Intellect" technical-datasheet theme.
   Dark, monospace-forward, hairline grid, cyan/green accents. Viz semantics:
   cyan = selected/path · green = top-p nucleus/kept · amber = high-entropy fork · red = cut. */

:root {
  --bg:        #08090b;
  --bg-grid:   rgba(120,140,170,.045);
  --panel:     #101317;
  --panel-2:   #151920;
  --recessed:  #0c0e12;
  --line:      rgba(140,160,190,.12);
  --line-soft: rgba(140,160,190,.07);
  --ink:       #e6eaf0;
  --ink-dim:   #8b95a6;
  --ink-faint: #5a6473;

  --cyan:      #38d3ee;   --cyan-dim: rgba(56,211,238,.14);  --cyan-line: rgba(56,211,238,.45);
  --green:     #4ade80;   --green-dim: rgba(74,222,128,.13); --green-line: rgba(74,222,128,.5);
  --amber:     #f5b942;   --amber-dim: rgba(245,185,66,.14); --amber-line: rgba(245,185,66,.5);
  --red:       #f8716a;   --red-dim: rgba(248,113,106,.13);
  --ink-on-accent: #04181d;

  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: 'Hanken Grotesk', system-ui, sans-serif;
  --r: 8px;
}

* { box-sizing: border-box; min-width: 0; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 30px 30px;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(820px 420px at 82% -6%, var(--cyan-dim), transparent 60%),
    radial-gradient(680px 380px at 6% 12%, var(--green-dim), transparent 64%);
  opacity: .7;
}
.app { position: relative; z-index: 1; max-width: 1320px; margin: 0 auto; padding: 0 20px 80px; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 18px 4px 16px; border-bottom: 1px solid var(--line); margin-bottom: 18px;
}
.brand { font-family: var(--sans); font-weight: 700; font-size: 17px; letter-spacing: -.01em; display: flex; align-items: center; gap: 10px; }
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px var(--cyan-dim), 0 0 12px var(--cyan); }
.brand small { font-family: var(--mono); font-weight: 400; font-size: 11px; color: var(--ink-faint); letter-spacing: .04em; }
.topbar .spacer { flex: 1; }

.field { display: flex; align-items: center; gap: 8px; font-size: 11px; color: var(--ink-dim); letter-spacing: .05em; text-transform: uppercase; }
.field select {
  font-family: var(--mono); font-size: 12.5px; color: var(--ink); text-transform: none; letter-spacing: 0;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 6px; padding: 6px 9px; cursor: pointer; max-width: 320px;
}
.field select:hover { border-color: var(--cyan-line); }
.badge {
  font-size: 11px; color: var(--green); background: var(--green-dim); border: 1px solid var(--green-line);
  border-radius: 999px; padding: 3px 10px; letter-spacing: .02em;
}
.modeswitch { display: inline-flex; border: 1px solid var(--line); border-radius: 7px; overflow: hidden; }
.modeswitch button {
  font-family: var(--mono); font-size: 12px; border: none; background: transparent; color: var(--ink-dim);
  padding: 6px 14px; cursor: pointer; transition: .15s;
}
.modeswitch button.on { background: var(--cyan); color: var(--ink-on-accent); font-weight: 600; }

/* ---------- layout ---------- */
.layout { display: grid; grid-template-columns: 1.5fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 980px) { .layout { grid-template-columns: 1fr; } }
.right { display: flex; flex-direction: column; gap: 16px; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 0; overflow: hidden; }
.panel-head {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 11px 15px; border-bottom: 1px solid var(--line-soft); background: var(--recessed);
}
.panel-title { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-dim); display: flex; align-items: center; gap: 8px; }
.panel-title .sq { width: 8px; height: 8px; border-radius: 2px; background: var(--cyan); }
.panel-body { padding: 15px; }
.hint { font-size: 11px; color: var(--ink-faint); letter-spacing: .02em; }

/* ---------- token tree (svg) ---------- */
#tree-svg { width: 100%; height: 440px; display: block; cursor: grab; }
.tree-edge { stroke: var(--line); fill: none; }
.tree-edge.on { stroke: var(--cyan-line); stroke-width: 1.6; }
.tree-node { cursor: pointer; }
.tree-node circle { fill: var(--panel-2); stroke: var(--ink-faint); stroke-width: 1.25; transition: fill .15s, stroke .15s; }
.tree-node:hover circle { stroke: var(--cyan); }
.tree-node.on circle { fill: var(--cyan-dim); stroke: var(--cyan); stroke-width: 2; }
.tree-node.sel circle { fill: var(--cyan); stroke: var(--cyan); }
.tree-node.fork circle { stroke: var(--amber); }
.tree-node.fork.ring circle { stroke-dasharray: 3 2; }
.tree-node text { font-family: var(--mono); font-size: 11px; fill: var(--ink-dim); }
.tree-node.on text, .tree-node.sel text { fill: var(--ink); }
.tree-forkbadge { font-size: 9px; fill: var(--amber); }
.tree-legend { font-size: 10.5px; fill: var(--ink-faint); }

/* ---------- distribution bars ---------- */
.dist-node-label { font-family: var(--mono); color: var(--cyan); }
#dist-bars { display: flex; flex-direction: column; gap: 3px; margin-bottom: 12px; }
.bar-row { display: grid; grid-template-columns: 92px 1fr 64px; align-items: center; gap: 9px; height: 21px; position: relative; }
.bar-tok { font-size: 12px; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: right; }
.bar-track { position: relative; height: 14px; background: var(--recessed); border-radius: 3px; overflow: hidden; }
.bar-fill { position: absolute; inset: 0 auto 0 0; border-radius: 3px; transition: width .35s cubic-bezier(.2,.7,.2,1), background .2s; }
.bar-fill.keep  { background: linear-gradient(90deg, var(--green), var(--green-line)); }
.bar-fill.cut   { background: var(--line); }
.bar-fill.plain { background: linear-gradient(90deg, var(--cyan), var(--cyan-line)); }
.bar-p { font-size: 11px; color: var(--ink-dim); text-align: right; font-variant-numeric: tabular-nums; }
.bar-row.cut .bar-tok, .bar-row.cut .bar-p { color: var(--ink-faint); }
.bar-row.greedy .bar-tok::after { content: " ◂"; color: var(--cyan); }

.cutline { position: relative; height: 0; }
.cutline .lbl {
  position: absolute; left: 101px; transform: translateY(-50%); font-size: 9.5px; letter-spacing: .05em;
  color: var(--ink-on-accent); background: var(--amber); padding: 1px 6px; border-radius: 3px; white-space: nowrap;
}
.cutdivider { font-size: 10px; color: var(--amber); text-align: center; letter-spacing: .08em; padding: 4px 0 2px; opacity: .85; }
.dist-other { display: grid; grid-template-columns: 92px 1fr 64px; align-items: center; gap: 9px; margin-top: 8px; padding-top: 9px; border-top: 1px dashed var(--line-soft); }
.dist-other .bar-track { flex: 1; }
.dist-other .bar-fill { background: repeating-linear-gradient(45deg, var(--ink-faint), var(--ink-faint) 2px, transparent 2px, transparent 5px); opacity: .5; }

.readout { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 13px; }
.stat { flex: 1; min-width: 88px; background: var(--recessed); border: 1px solid var(--line-soft); border-radius: 6px; padding: 9px 11px; }
.stat .k { font-size: 9.5px; letter-spacing: .09em; text-transform: uppercase; color: var(--ink-faint); }
.stat .v { font-size: 19px; font-weight: 600; margin-top: 2px; font-variant-numeric: tabular-nums; }
.stat.ent .v { color: var(--amber); } .stat.kept .v { color: var(--green); } .stat.other .v { color: var(--ink-dim); }

/* ---------- controls ---------- */
.tabs { display: flex; gap: 6px; margin-bottom: 15px; flex-wrap: wrap; }
.tab {
  font-family: var(--mono); font-size: 12px; color: var(--ink-dim); background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 6px; padding: 6px 12px; cursor: pointer; transition: .15s;
}
.tab:hover { border-color: var(--cyan-line); color: var(--ink); }
.tab.on { background: var(--cyan-dim); border-color: var(--cyan); color: var(--cyan); }
.slider { margin-bottom: 14px; }
.slider.hidden { display: none; }
.slider-head { display: flex; justify-content: space-between; font-size: 11px; margin-bottom: 6px; }
.slider-head .name { color: var(--ink-dim); letter-spacing: .05em; text-transform: uppercase; }
.slider-head .val { color: var(--cyan); font-variant-numeric: tabular-nums; }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 4px; border-radius: 3px; background: var(--line); outline: none; }
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 15px; height: 15px; border-radius: 50%; background: var(--cyan);
  cursor: pointer; box-shadow: 0 0 0 4px var(--cyan-dim); transition: box-shadow .15s;
}
input[type=range]::-webkit-slider-thumb:hover { box-shadow: 0 0 0 6px var(--cyan-dim); }
input[type=range]::-moz-range-thumb { width: 15px; height: 15px; border: none; border-radius: 50%; background: var(--cyan); cursor: pointer; }
.slider-cap { font-size: 10px; color: var(--ink-faint); margin-top: 3px; }

.dice {
  width: 100%; font-family: var(--mono); font-size: 13px; letter-spacing: .03em;
  background: var(--panel-2); color: var(--ink); border: 1px solid var(--cyan-line); border-radius: 7px;
  padding: 10px; cursor: pointer; transition: .15s; margin-top: 4px;
}
.dice:hover { background: var(--cyan-dim); box-shadow: 0 0 18px -6px var(--cyan); }
.dice:active { transform: translateY(1px); }
.dice-out { margin-top: 10px; font-size: 12px; color: var(--ink-dim); min-height: 18px; }
.dice-out b { color: var(--green); }

/* ---------- evidence ---------- */
#evidence-panel { margin-top: 16px; }
.ev-row { display: grid; grid-template-columns: 132px 1fr; gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--line-soft); align-items: baseline; }
.ev-row:last-child { border-bottom: none; }
.ev-strat { display: flex; flex-direction: column; gap: 3px; }
.ev-strat .nm { font-size: 12.5px; color: var(--ink); font-weight: 600; }
.ev-strat .tag { font-size: 10px; color: var(--ink-faint); }
.ev-strat .dot { width: 7px; height: 7px; border-radius: 2px; display: inline-block; margin-right: 6px; }
.ev-cont { font-size: 13px; color: var(--ink-dim); line-height: 1.7; }
.ev-cont .seed { color: var(--ink-faint); }
.ev-cont .gen { color: var(--ink); }
.ev-cont.loopy .gen { color: var(--red); }
.ws { color: var(--ink-faint); opacity: .55; }

/* ---------- misc ---------- */
.err { color: var(--red); padding: 16px; font-family: var(--mono); white-space: pre-wrap; }
.fade { animation: fade .5s both; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { *, .bar-fill { transition: none !important; animation: none !important; } }