/* Demo chrome and chart tokens.
 *
 * The two modes are separately selected palettes, not one flipped palette: the
 * dark steps are chosen for the dark surface and validated against it. Both are
 * declared under the media query (OS setting) and under [data-theme] (explicit
 * choice) so the toggle wins in either direction.
 *
 * Categorical slots come from the validated three-slot set. All-pairs checks
 * pass in both modes; the light-mode aqua sits at 2.74:1 against the surface,
 * so every chart using it ships direct labels and a table view — the relief
 * that requirement calls for. */

.viz {
  --viz-surface: #ffffff;
  --viz-grid: #e8ecec;
  --viz-rule: #9aa6ac;
  --viz-ink: #161d21;
  --viz-ink-soft: #56636a;

  --series-1: #2a78d6;   /* blue    — eta */
  --series-2: #eb6834;   /* orange  — brittleness */
  --series-3: #1baf7a;   /* aqua    — NVDIC / cluster re-solves */
  --series-4: #eda100;   /* yellow  — quality scoring */
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .viz {
    --viz-surface: #182027;
    --viz-grid: #2a353c;
    --viz-rule: #6d7c84;
    --viz-ink: #e9eef0;
    --viz-ink-soft: #9fadb3;

    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
  }
}

:root[data-theme="dark"] .viz {
  --viz-surface: #182027;
  --viz-grid: #2a353c;
  --viz-rule: #6d7c84;
  --viz-ink: #e9eef0;
  --viz-ink-soft: #9fadb3;

  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --series-4: #c98500;
}

/* ------------------------------------------------------------------ layout */

.viz { background: var(--viz-surface); color: var(--viz-ink); }

.demo-panel { padding: 22px 24px; border-top: 1px solid var(--line-soft); }
.demo-panel:first-child { border-top: none; }
.demo-panel > h3 {
  font-family: var(--sans); font-size: 15px; font-weight: 650;
  letter-spacing: -0.005em; margin-bottom: 3px;
}
.demo-panel > .panel-note {
  font-size: 14px; color: var(--viz-ink-soft); margin-bottom: 18px; max-width: 62ch;
}

.panel-grid { display: grid; grid-template-columns: 220px 1fr; gap: 26px; align-items: start; }
@media (max-width: 720px) { .panel-grid { grid-template-columns: 1fr; gap: 18px; } }

/* ---------------------------------------------------------------- controls */

.controls { display: flex; flex-direction: column; gap: 18px; }
.control-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.control label { font-size: 13px; font-weight: 600; color: var(--viz-ink); }
.control output {
  font-family: var(--mono); font-size: 13px; font-variant-numeric: tabular-nums;
  color: var(--accent); font-weight: 600;
}
.control-hint { font-size: 12px; color: var(--viz-ink-soft); margin-top: 5px; line-height: 1.45; }

.control input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 22px; background: transparent; margin-top: 6px; cursor: pointer;
}
.control input[type="range"]::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px; background: var(--viz-grid);
}
.control input[type="range"]::-moz-range-track {
  height: 4px; border-radius: 2px; background: var(--viz-grid);
}
.control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 16px; height: 16px; margin-top: -6px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--viz-surface);
  box-shadow: 0 0 0 1px var(--accent);
}
.control input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--viz-surface);
  box-shadow: 0 0 0 1px var(--accent);
}
.control input[type="range"]:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }

.demo-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 4px; }
.demo-actions button {
  font: inherit; font-size: 13.5px; font-weight: 600;
  padding: 8px 15px; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink);
}
.demo-actions button.ghost { background: transparent; color: var(--accent); }
.demo-actions button:hover { opacity: 0.88; }
.demo-actions button:disabled { opacity: 0.45; cursor: progress; }

/* ------------------------------------------------------------------ plots */

.plot-host { position: relative; }
.plot { display: block; width: 100%; height: auto; overflow: visible; }
.plot-grid line { stroke: var(--viz-grid); stroke-width: 1; }
.plot text.tick, .plot text.axis-title {
  font-family: var(--mono); font-size: 10px; fill: var(--viz-ink-soft);
  font-variant-numeric: tabular-nums;
}
.plot text.axis-title { font-family: var(--sans); font-size: 11px; }
/* Labels wear text tokens, never the series colour — a light categorical hue
   is illegible as text on the surface. Identity comes from the mark beside it. */
.plot text.point-label {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  fill: var(--viz-ink); font-variant-numeric: tabular-nums;
}
.plot text.rule-label {
  font-family: var(--mono); font-size: 10px; fill: var(--viz-ink-soft);
}

.plot-tip {
  position: absolute; transform: translate(-50%, calc(-100% - 14px));
  background: var(--viz-surface); border: 1px solid var(--line);
  border-radius: 7px; padding: 8px 11px; pointer-events: none;
  box-shadow: 0 4px 16px rgb(0 0 0 / 0.14); font-size: 12.5px;
  display: grid; grid-template-columns: 1fr auto; gap: 3px 16px; white-space: nowrap; z-index: 5;
}
.plot-tip .tip-x {
  grid-column: 1 / -1; font-family: var(--mono); font-size: 11px;
  color: var(--viz-ink-soft); padding-bottom: 3px; border-bottom: 1px solid var(--line-soft);
  margin-bottom: 2px;
}
.plot-tip .k { display: flex; align-items: center; gap: 7px; color: var(--viz-ink-soft); }
.plot-tip .k i { width: 9px; height: 9px; border-radius: 2px; flex: none; }
.plot-tip b { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--viz-ink); }

.plot-legend {
  display: flex; flex-wrap: wrap; gap: 8px 20px; list-style: none;
  margin: 10px 0 0; padding: 0; font-size: 12.5px; color: var(--viz-ink-soft);
}
.plot-legend li { display: flex; align-items: center; gap: 7px; }
.plot-legend i { width: 11px; height: 3px; border-radius: 2px; flex: none; }

.plot-caption {
  font-size: 12.5px; color: var(--viz-ink-soft); margin-top: 8px; max-width: 64ch; line-height: 1.5;
}

/* ------------------------------------------------------------- stat tiles */

.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 14px; margin-top: 16px; }
.stat {
  border: 1px solid var(--line); border-radius: 8px; padding: 13px 15px; background: var(--viz-surface);
}
.stat .stat-label { font-size: 11.5px; color: var(--viz-ink-soft); line-height: 1.35; }
.stat .stat-value {
  font-family: var(--mono); font-size: 20px; font-weight: 600;
  font-variant-numeric: tabular-nums; margin-top: 5px; color: var(--viz-ink);
}
.stat .stat-value small { font-size: 12px; font-weight: 500; color: var(--viz-ink-soft); }
.stat.is-pick { border-color: var(--accent); }

/* ------------------------------------------------------------ table view */

.table-view { margin-top: 14px; }
.table-view summary {
  font-size: 12.5px; color: var(--accent); cursor: pointer; font-weight: 600;
  list-style: none; display: inline-flex; align-items: center; gap: 6px;
}
.table-view summary::-webkit-details-marker { display: none; }
.table-view summary::before { content: "▸"; transition: transform 0.15s; }
.table-view[open] summary::before { transform: rotate(90deg); }
.table-view .scroll { overflow-x: auto; margin-top: 10px; }
.table-view table { border-collapse: collapse; width: 100%; font-size: 13px; }
.table-view caption { text-align: left; font-size: 12px; color: var(--viz-ink-soft); padding-bottom: 8px; }
.table-view th, .table-view td {
  text-align: left; padding: 7px 12px; border-bottom: 1px solid var(--line-soft);
}
.table-view thead th {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--viz-ink-soft); font-weight: 600;
}
.table-view tbody th { font-weight: 500; color: var(--viz-ink-soft); }
.table-view td.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* --------------------------------------------------------------- loading */

.demo-loading { padding: 30px 24px; font-size: 14px; color: var(--viz-ink-soft); }

@media (prefers-reduced-motion: reduce) {
  .table-view summary::before { transition: none; }
}


/* ------------------------------------------------- phase bar & allocation */

.phase-bar { display: flex; width: 100%; height: 26px; border-radius: 4px; overflow: hidden; gap: 2px; }
.phase-bar span { display: block; height: 100%; }
.phase-key { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 10px; list-style: none; padding: 0; font-size: 12px; }
.phase-key li { display: flex; align-items: baseline; gap: 7px; color: var(--viz-ink-soft); }
.phase-key i { width: 10px; height: 10px; border-radius: 2px; flex: none; align-self: center; }
.phase-key b { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--viz-ink); font-weight: 600; }

.alloc { display: flex; flex-direction: column; gap: 7px; margin-top: 4px; }
.alloc-row { display: grid; grid-template-columns: 108px 1fr 58px; gap: 10px; align-items: center; font-size: 13px; }
.alloc-row .n { color: var(--viz-ink-soft); }
.alloc-row .track { background: var(--viz-grid); height: 12px; border-radius: 3px; overflow: hidden; }
.alloc-row .fill { height: 100%; background: var(--series-1); border-radius: 3px 0 0 3px; }
.alloc-row .v { font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; color: var(--viz-ink); }
.alloc-row.is-cash .fill { background: var(--viz-rule); }

.demo-error {
  border: 1px solid var(--series-2); background: color-mix(in srgb, var(--series-2) 8%, transparent);
  padding: 14px 16px; border-radius: 8px; font-size: 14px; color: var(--viz-ink);
}
.demo-error code { font-size: 12.5px; }

/* ------------------------------------------------------------- selects */

.demo-select {
  font: inherit; font-size: 13.5px; width: 100%; margin-top: 6px;
  padding: 7px 10px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--viz-surface); color: var(--viz-ink);
}
.demo-select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* A tile reporting something that is wrong right now. Semantic, and separate
   from the categorical series colours. */
.stat.is-warn { border-color: var(--series-2); }
.stat.is-warn .stat-value { color: var(--series-2); }

/* --------------------------------------------------------- floor plan */

.floorplan { background: var(--viz-surface); }
.solver-strip { font-family: var(--mono); font-size: 12px; line-height: 1.6; }
.solver-strip strong { color: var(--viz-ink); font-weight: 600; font-variant-numeric: tabular-nums; }

.aisle-row { display: flex; gap: 6px; margin-top: 8px; }
.aisle-slider {
  -webkit-appearance: none; appearance: none;
  flex: 1; min-width: 0; height: 18px; background: transparent; cursor: pointer;
}
.aisle-slider::-webkit-slider-runnable-track { height: 3px; border-radius: 2px; background: var(--viz-grid); }
.aisle-slider::-moz-range-track { height: 3px; border-radius: 2px; background: var(--viz-grid); }
.aisle-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 11px; height: 11px; margin-top: -4px; border-radius: 50%;
  background: var(--accent); border: 1.5px solid var(--viz-surface);
}
.aisle-slider::-moz-range-thumb {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--accent); border: 1.5px solid var(--viz-surface);
}
.aisle-slider:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }