/* Print-encyclopedia chrome for the atlas pages and 3D plates.
 * Tan paper and ink, not a dark HUD. System Palatino/Georgia for
 * headings; UI chrome uses the system sans. Overlay cards on the
 * 3D plates follow the sagittal teaching figure: cream, rounded,
 * coloured border. */

:root {
  --paper: #e8d6b5;
  --plate: #e2cc9e;
  --ink: #2c2418;
  --dim: #5c5346;
  --faint: #7a6f5c;
  --rule: #c4ae86;
  --line: #d4c19a;
  --panel: #f3e6cc;
  --card: #faf3e4;
  --accent: #6b3a1c;
  --edge: #a89068;
  --ground: var(--paper);
}

* { box-sizing: border-box; }
* { scrollbar-color: #b8a888 transparent; scrollbar-width: thin; }
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: #b8a888; border-radius: 0;
  border: 2px solid transparent; background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: #8c7858; background-clip: content-box; }

html { background: var(--paper); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.65 "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

a { color: var(--accent); }
a:hover { text-decoration: underline; }
code {
  font: 400 .86em/1 ui-monospace, "Source Code Pro", Consolas, monospace;
  color: #2a3340;
  background: var(--panel);
  padding: .05em .35em;
  border: 1px solid var(--line);
}

.encyc-mast {
  border-bottom: 2px solid var(--ink);
  background: var(--paper);
}
.encyc-mast-in {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px clamp(16px, 4vw, 32px) 8px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.encyc-running {
  margin: 0;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 600;
}
.encyc-mast nav { display: flex; gap: 1.1rem; flex-wrap: wrap; }
.encyc-mast nav a {
  color: var(--dim);
  text-decoration: none;
  font-size: 13px;
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
.encyc-mast nav a:hover { color: var(--ink); text-decoration: underline; }

.encyc-head { max-width: 800px; margin: 0 auto; padding: 28px clamp(16px, 5vw, 32px) 8px; }
.encyc-head h1 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4.4vw, 40px);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.15;
  text-wrap: balance;
}
.encyc-head h1::after {
  content: "";
  display: block;
  width: 100%;
  height: 7px;
  margin-top: 12px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.encyc-lede {
  margin: 0;
  color: var(--dim);
  font-size: 1.05rem;
  max-width: 62ch;
}

.wrap { max-width: 800px; margin: 0 auto; padding: 0 clamp(16px, 5vw, 32px) 90px; }
h1 { margin: 0 0 8px; font-size: clamp(26px, 4.2vw, 36px); font-weight: 600; letter-spacing: -.02em; }
h2 {
  margin: 44px 0 12px;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 4px;
}
h3 { font-size: 1.02rem; margin: 1.4rem 0 .4rem; }
p { margin: 0 0 15px; }

.cite {
  margin: 26px 0 0;
  padding: 14px 0 0;
  background: transparent;
  border-top: 1px solid var(--rule);
  border-radius: 0;
  font-size: 14.5px;
  color: var(--dim);
  line-height: 1.62;
}
.cite .t { color: var(--ink); display: block; margin-bottom: 6px; font-weight: 600; }

.note {
  font-size: 15px;
  color: var(--dim);
  border-left: 0;
  border-top: 1px solid var(--rule);
  padding: 12px 0 4px;
  margin: 22px 0;
}
.note b { color: var(--ink); font-weight: 600; }

body.simple-home {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.stage.simple {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.stage.simple .viewport {
  flex: 1;
  min-height: 0;
  border-top: 0;
  border-bottom: 1px solid var(--rule);
}
.stage.simple .canvas {
  height: 100%;
  min-height: 0;
}
.simple-lamps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 10px 16px 14px;
  background: var(--paper);
}
.simple-lamps .tabs { flex: 1 1 auto; }
.simple-full {
  font-size: 13px;
  color: var(--dim);
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
  text-decoration: none;
  white-space: nowrap;
}
.simple-full:hover { color: var(--ink); text-decoration: underline; }

.stage { background: var(--paper); }
.stage .viewport {
  position: relative;
  background: var(--plate);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--rule);
}
.stage .canvas {
  position: relative;
  height: min(76vh, 780px);
  min-height: 380px;
  width: 100%;
  background: var(--plate);
}
#cord .canvas { height: min(72vh, 720px); min-height: 380px; }
#dorsal-horn .canvas { height: min(58vh, 560px); min-height: 340px; }
#dorsal-horn [data-dh-plate] {
  position: absolute; inset: 0; z-index: 3;
  width: 100%; height: 100%;
  object-fit: contain;
  background: var(--plate);
}
#dorsal-horn [data-dh-plate][hidden] { display: none; }

.encyc-caption {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px clamp(16px, 4vw, 32px) 4px;
  font-size: 14px;
  color: var(--dim);
}
.encyc-caption b { color: var(--ink); font-weight: 600; font-variant: small-caps; letter-spacing: .04em; }

.source-badge, .scene-legend {
  position: absolute; z-index: 6; pointer-events: none;
  font-size: 12px; line-height: 1.35; color: var(--ink);
  background: rgb(250 243 228 / .92);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 7px 10px;
  max-width: min(22rem, calc(100% - 28px));
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
.source-badge { top: 12px; left: 12px; }
.scene-legend { bottom: 12px; left: 12px; color: var(--dim); font-size: 11.5px; }
.scene-legend b { color: var(--ink); font-weight: 600; }

.load-meter {
  position: absolute; inset: 0; z-index: 8;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; padding: 20px;
  background: rgb(232 214 181 / .78);
  pointer-events: none;
}
.load-meter[hidden] { display: none; }
.load-meter-label {
  margin: 0; color: var(--ink); font-size: 14px;
  font-variant-numeric: tabular-nums;
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
.load-meter-label span { font-weight: 600; }
.load-meter-track {
  width: min(18rem, calc(100% - 48px)); height: 4px;
  border-radius: 0; background: var(--line); overflow: hidden;
}
.load-meter-fill { height: 100%; width: 0; background: var(--accent); }

.callout-svg {
  position: absolute; inset: 0; z-index: 4; pointer-events: none; overflow: visible;
}
.callout-card {
  position: absolute; z-index: 6; pointer-events: none;
  width: min(15.5rem, calc(100% - 24px));
  padding: 9px 11px 10px;
  background: color-mix(in srgb, var(--callout-accent, var(--accent)) 12%, var(--card));
  color: var(--ink);
  border: 2px solid var(--callout-accent, var(--ink));
  --callout-accent: var(--accent);
  font-size: 13px; line-height: 1.4;
  box-shadow: 2px 3px 0 rgb(44 36 24 / .10);
  border-radius: 10px;
}
.callout-card.is-right,
.callout-card.is-left { border: 2px solid var(--callout-accent, var(--ink)); }
.callout-card[hidden], .callout-svg[hidden] { display: none; }
.callout-card .kicker {
  display: block; font-size: 10px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--faint); margin: 0 0 2px;
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
.callout-card strong { display: block; font-weight: 600; font-size: 15px; }
.callout-card .sub { display: block; font-size: 11px; color: var(--faint); margin: 1px 0 0; }
.callout-card p { margin: 6px 0 0; color: var(--dim); font-size: 12.5px; }
.lamp-card { z-index: 5; width: min(11.4rem, calc(100% - 16px)); padding: 6px 8px 7px; }
.lamp-card strong { font-size: 13px; }
.lamp-card .sub { font-size: 10px; }
.lamp-card p { font-size: 11px; margin: 4px 0 0; }
button.lamp-card.is-system {
  appearance: none;
  display: block;
  font: inherit;
  text-align: left;
  pointer-events: auto;
  cursor: pointer;
}
button.lamp-card.is-system:hover,
button.lamp-card.is-system:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}
.callout-card .src-ico {
  display: inline-block; width: 13px; height: 13px;
  vertical-align: -2px; margin-right: 5px;
  background: currentColor;
  -webkit-mask-position: center; -webkit-mask-repeat: no-repeat; -webkit-mask-size: contain;
  mask-position: center; mask-repeat: no-repeat; mask-size: contain;
}
.callout-card .src-ico.ico-book {
  -webkit-mask-image: url("../images/book.svg");
  mask-image: url("../images/book.svg");
}
.lamp-card.is-focus {
  z-index: 7;
  background: #fffaf0;
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}
.lamp-card.is-focus strong { color: var(--ink); }

@media (max-width: 760px) {
  .stage .canvas { height: min(56vh, 420px); }
}

.controls {
  border-top: 0;
  background: var(--paper);
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
.controls .in { max-width: 1100px; margin: 0 auto; padding: 14px clamp(16px, 5vw, 32px) 22px; }
.row { margin: 0 0 14px; }
.row > h3 {
  margin: 0 0 7px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
  border: 0;
  padding: 0;
}
.tabs { display: flex; flex-wrap: wrap; gap: 5px; }
.tabs button {
  appearance: none;
  background: var(--card);
  color: var(--dim);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 5px 12px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
.tabs button u { display: block; text-decoration: none; font-size: 10.5px; color: var(--faint); }
.tabs.lamps button {
  color: var(--ink);
  background: color-mix(in srgb, var(--lamp, var(--edge)) 34%, var(--card));
  border-color: color-mix(in srgb, var(--lamp, var(--edge)) 55%, var(--rule));
  border-left: 4px solid var(--lamp, var(--edge));
}
.tabs.lamps button[aria-pressed="false"] { filter: grayscale(.35) opacity(.72); }
.tabs.lamps button[aria-pressed="true"] {
  box-shadow: none;
  outline: 1px solid var(--ink);
  outline-offset: -1px;
  background: color-mix(in srgb, var(--lamp, var(--edge)) 34%, var(--card));
}
.tabs button:hover { color: var(--ink); border-color: var(--ink); }
.tabs button[aria-selected="true"],
.tabs button[aria-pressed="true"] {
  color: var(--ink);
  border-color: var(--ink);
  background: var(--card);
}
.tabs button:disabled { opacity: .45; cursor: not-allowed; }

.linkpair { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; }
.linkpair span, .linkpair label { color: var(--dim); font-size: 13.5px; }
.linkpair label { display: flex; align-items: center; gap: 8px; }
.linkpair select {
  appearance: none;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 6px 28px 6px 12px;
  font: inherit; font-size: 13.5px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--dim) 50%),
    linear-gradient(135deg, var(--dim) 50%, transparent 50%);
  background-position: calc(100% - 14px) 55%, calc(100% - 9px) 55%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.bundles {
  display: flex; flex-wrap: wrap; gap: 6px; max-height: 184px; overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: #b8a888 transparent; padding-right: 8px;
}
.bundles .lg {
  appearance: none; display: inline-flex; align-items: center; gap: 8px;
  background: var(--card); border: 1px solid var(--rule); border-radius: 0;
  color: var(--dim); font: inherit; font-size: 12.5px; padding: 5px 10px; cursor: pointer;
}
.bundles .lg s { width: 9px; height: 9px; border-radius: 0; flex: 0 0 auto; text-decoration: none; }
.bundles .lg em { font-style: normal; color: var(--faint); font-variant-numeric: tabular-nums; }
.bundles .lg:hover { color: var(--ink); border-color: var(--ink); }
.bundles .lg[aria-pressed="true"] {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--cc) 55%, var(--ink));
  background: color-mix(in srgb, var(--cc) 10%, #fff);
}

.tnote { margin: 8px 0 0; font-size: 12.5px; color: var(--faint); max-width: 46rem; }
.info { margin: 14px 0 0; font-size: 13.5px; color: var(--dim); }
.info b { color: var(--ink); font-weight: 600; }
.pill {
  display: inline-flex; align-items: center; gap: 5px; font-size: 11px;
  padding: 2px 8px; border-radius: 0;
  border: 1px solid color-mix(in srgb, var(--cc, #154a7a) 45%, var(--rule));
  color: var(--ink);
  background: color-mix(in srgb, var(--cc, #154a7a) 10%, #fff);
  vertical-align: 2px;
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
.pill .ico {
  width: 16px; height: 16px; flex: 0 0 auto; display: block;
  background: currentColor;
  -webkit-mask-position: center; -webkit-mask-repeat: no-repeat; -webkit-mask-size: contain;
  mask-position: center; mask-repeat: no-repeat; mask-size: contain;
}
.pill .ico-book { -webkit-mask-image: url("../images/book.svg"); mask-image: url("../images/book.svg"); }
.pill .ico-atlas { -webkit-mask-image: url("../images/microscope.svg"); mask-image: url("../images/microscope.svg"); }
.rows {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 2px 24px; margin: 10px 0 0;
}
.rows > div {
  display: flex; justify-content: space-between; gap: 12px; padding: 5px 0;
  border-bottom: 1px solid var(--line);
}
.rows dt { margin: 0; color: var(--dim); }
.rows dd { margin: 0; color: var(--ink); font-variant-numeric: tabular-nums; }
.rows dd u, .tabs button u { text-transform: none; text-decoration: none; color: var(--faint); font-size: 11.5px; }
.whatfor {
  font-size: 13.5px; color: var(--dim); margin: 12px 0 0;
  border-left: 2px solid var(--rule); padding: 1px 0 1px 14px;
}
.actblurb { font-size: 13.5px; color: var(--dim); margin: 0 0 12px; }
ol.chain { list-style: none; margin: 0 0 14px; padding: 0; counter-reset: leg; }
ol.chain li {
  counter-increment: leg; position: relative;
  padding: 7px 0 7px 34px; border-bottom: 1px solid var(--line);
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px;
  font-size: 13px; color: var(--dim);
}
ol.chain li::before {
  content: counter(leg); position: absolute; left: 0; top: 7px;
  width: 22px; height: 22px; border-radius: 0; font-size: 11px;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink); border: 1px solid var(--rule); background: var(--panel);
}
ol.chain li b { color: var(--ink); font-weight: 600; }
ol.chain li span { flex: 1 1 200px; color: var(--faint); font-size: 12.5px; }
ol.chain li em { font-style: normal; color: var(--dim); font-variant-numeric: tabular-nums; font-size: 12px; }
.fallback { color: var(--faint); font-size: 14px; margin: 8px 0 0; }

footer {
  border-top: 2px solid var(--ink);
  color: var(--faint);
  font-size: 13.5px;
  padding: 18px 0 0;
  margin: 48px 0 0;
}
footer a { color: var(--dim); }

table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 1rem 0 1.6rem; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { background: var(--panel); font-weight: 600; }

.bar {
  position: sticky; top: 0; z-index: 8;
  background: rgb(232 214 181 / .94);
  border-bottom: 1px solid var(--ink);
}
.bar-in {
  max-width: 1280px; margin: 0 auto; padding: 10px 18px;
  display: flex; gap: 14px; align-items: center; flex-wrap: wrap;
}
.bar a { text-decoration: none; color: var(--dim); font-size: 14px; font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif; }
.bar a:hover { color: var(--ink); }

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.9fr);
  gap: 18px;
  align-items: start;
}
.grid .stage {
  background: var(--plate);
  border: 1px solid var(--ink);
  min-height: 520px;
  height: min(72vh, 740px);
  position: relative;
}
.grid .stage .canvas {
  position: absolute;
  inset: 0;
  height: auto;
  min-height: 0;
}
.lede { color: var(--dim); max-width: 72ch; margin: 0 0 18px; }
.hint { color: var(--dim); font-size: 12.5px; }
.swatch { display: inline-block; width: 12px; height: 12px; vertical-align: -1px; margin-right: 4px; border: 1px solid var(--rule); }
.stage.paint-on { cursor: crosshair; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
textarea {
  width: 100%;
  min-height: 140px;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--rule);
  font: 13px/1.45 ui-monospace, Consolas, monospace;
  padding: 8px;
}
@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
}

fieldset {
  border: 1px solid var(--rule);
  border-radius: 0;
  background: var(--card);
  margin: 0 0 12px;
  padding: 10px 12px 12px;
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
legend {
  color: var(--faint);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 0 6px;
}
label.row, .row.chips, .chips { font-size: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips label {
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 3px 10px;
  font-size: 13px;
  cursor: pointer;
  background: var(--card);
}
.goto, .copy {
  appearance: none;
  border: 1px solid var(--ink);
  background: var(--card);
  color: var(--ink);
  padding: 4px 10px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  border-radius: 0;
}
.copy.primary, button.copy[type="button"]:not([style]) { }

.hud {
  position: absolute; left: 10px; top: 10px; z-index: 4;
  font-size: 12px; color: var(--dim);
  background: rgb(250 243 228 / .9);
  border: 1px solid var(--rule);
  padding: 6px 9px;
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}
.status {
  position: absolute; left: 10px; bottom: 10px; z-index: 4;
  font-size: 12px; color: var(--dim);
  background: rgb(250 243 228 / .9);
  border: 1px solid var(--rule);
  padding: 6px 9px;
  max-width: 28rem;
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
}

[data-modeling].wrap { max-width: 1280px; padding: 22px 18px 80px; }

.kicker {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
  font-family: ui-sans-serif, "Segoe UI", system-ui, sans-serif;
  font-weight: 600;
}
.why { color: var(--dim); max-width: 70ch; }
.goals {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 22px;
  margin: 22px 0 36px;
  align-items: start;
}
@media (max-width: 800px) { .goals { grid-template-columns: 1fr; } }
.goals ul { margin: 0; padding-left: 1.15rem; }
.goals li { margin: 0 0 8px; }
.goals small { display: block; color: var(--faint); font-size: 13px; }
article.plate {
  margin: 0 0 48px;
  padding-top: 12px;
  border-top: 1px solid var(--ink);
}
article.plate .stage, .goals .stage {
  background: var(--plate);
  border: 1px solid var(--ink);
  min-height: 0;
}
article.plate .stage svg, .goals .stage svg { display: block; width: 100%; height: auto; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 800px) { .split { grid-template-columns: 1fr; } }
.split .pane { background: #fff; border: 1px solid var(--rule); padding: 8px; }
.split .pane.dark { background: var(--plate); }
.meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 12px;
}
.meta h3 { margin: 0 0 4px; font-size: 0.95rem; border: 0; }
.chips button {
  appearance: none;
  border: 1px solid var(--rule);
  background: var(--card);
  color: var(--ink);
  padding: 4px 10px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}