/* moonconf site — graphite and brass.
 *
 * The library is a control cabinet: several plates of settings bolted together
 * into one reading. The page is built the same way: plates, hairline seams,
 * knurled edges, brass for whatever is live, rust for whatever was refused.
 *
 * Colour is defined once on :root for the dark theme and again for the light
 * one; nothing below re-states a colour.
 */

:root {
  color-scheme: dark;

  --bg: #0e1012;
  --bg-soft: #131619;
  --panel: #171b1f;
  --panel-2: #1e2429;
  --panel-3: #262d33;
  --screen: #0b0d0f;
  --ink: #ece7dc;
  --ink-2: #b6b1a4;
  --ink-3: #867f72;
  --rule: #2b3237;
  --rule-2: #3d464d;
  --brass: #e0a94a;
  --brass-2: #f4d192;
  --brass-ink: #1b1405;
  --brass-dim: #6d5320;
  --steel: #9db4c2;
  --rust: #e0653f;
  --moss: #96b46b;
  --shadow: 0 18px 40px -24px rgb(0 0 0 / 0.9);
  --tier-default: #98a2a9;
  --tier-file: #74a9c5;
  --tier-env: #e0a94a;
  --tier-override: #e08a5a;
  --grid: rgb(224 169 74 / 0.05);
  --halo: rgb(224 169 74 / 0.14);

  --font-display: "Barlow Condensed", "Arial Narrow", "Helvetica Neue", sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --page: 1180px;
  --gutter: 24px;
  --radius: 4px;
  --step: 8px;
}

[data-theme="light"] {
  color-scheme: light;

  --bg: #eeeae0;
  --bg-soft: #f4f1e8;
  --panel: #f8f5ed;
  --panel-2: #ece7da;
  --panel-3: #e0d9c8;
  --screen: #f7f4ec;
  --ink: #191b1a;
  --ink-2: #4b4e49;
  --ink-3: #6f726b;
  --rule: #d6cebd;
  --rule-2: #bcb29b;
  --brass: #86580f;
  --brass-2: #6b4408;
  --brass-ink: #fdf6e6;
  --brass-dim: #c8a768;
  --steel: #2f6b86;
  --rust: #a63c1c;
  --moss: #4f6b25;
  --shadow: 0 18px 34px -26px rgb(60 48 20 / 0.55);
  --tier-default: #6b7370;
  --tier-file: #2f6b86;
  --tier-env: #8a5a12;
  --tier-override: #a8552a;
  --grid: rgb(120 96 40 / 0.07);
  --halo: rgb(134 88 15 / 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

html,
button,
input,
textarea,
select {
  font-variant-ligatures: no-contextual;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* A fine engineering grid, and a slow warm light from the top left. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    radial-gradient(60% 50% at 12% -10%, var(--halo), transparent 70%);
  background-size:
    48px 48px,
    48px 48px,
    100% 100%;
  pointer-events: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--brass);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--brass-2);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.04;
  margin: 0;
  text-wrap: balance;
}

p {
  margin: 0 0 1em;
}

code,
pre,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

:not(pre) > code {
  background: color-mix(in srgb, var(--panel-3) 70%, transparent);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.08em 0.36em;
  font-size: 0.86em;
  white-space: nowrap;
}

/* Scrollbars: knurled, not the browser's own. */
@supports not selector(::-webkit-scrollbar) {
  * {
    scrollbar-width: thin;
    scrollbar-color: var(--rule-2) transparent;
  }
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--bg) 70%, transparent);
}

::-webkit-scrollbar-thumb {
  background: var(--rule-2);
  border: 2px solid var(--bg);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brass-dim);
}

::selection {
  background: color-mix(in srgb, var(--brass) 34%, transparent);
  color: var(--ink);
}

.wrap {
  width: min(var(--page), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

.inner {
  width: min(var(--page), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 16px;
  top: 16px;
  z-index: 100;
  background: var(--brass);
  color: var(--brass-ink);
  padding: 8px 14px;
}

/* ---------------------------------------------------------------- header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(12px) saturate(120%);
  border-bottom: 1px solid var(--rule);
}

.site-header::after {
  content: "";
  display: block;
  height: 3px;
  background:
    repeating-linear-gradient(
      90deg,
      color-mix(in srgb, var(--brass) 55%, transparent) 0 1px,
      transparent 1px 6px
    );
  opacity: 0.55;
}

.site-header .inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 66px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  flex: none;
}

.wordmark .gear {
  width: 26px;
  height: 26px;
  color: var(--brass);
}

.wordmark .name {
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  line-height: 1;
}

.wordmark .dash {
  width: 1px;
  height: 20px;
  background: var(--rule-2);
}

.wordmark .kind {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.site-nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: 2px;
  white-space: nowrap;
}

.site-nav a:hover {
  color: var(--ink);
  border-color: var(--rule);
}

.site-nav a[aria-current="page"] {
  color: var(--brass);
  border-color: color-mix(in srgb, var(--brass) 40%, transparent);
  background: color-mix(in srgb, var(--brass) 8%, transparent);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: none;
}

/* The padding that makes a nav link comfortable must not squeeze an icon. */
.icon-button {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
}

.icon-button:hover {
  color: var(--ink);
  border-color: var(--rule-2);
  background: var(--panel-2);
}

.icon-button svg {
  width: 17px;
  height: 17px;
}

[data-theme="dark"] .icon-sun,
[data-theme="light"] .icon-moon {
  display: none;
}

/* ------------------------------------------------------------------ hero */

.hero {
  position: relative;
  overflow: clip;
  padding: 64px 0 72px;
  border-bottom: 1px solid var(--rule);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 56px;
  align-items: start;
  position: relative;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 22px;
}

.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brass);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brass) 18%, transparent);
}

.hero h1 {
  font-size: clamp(52px, 7.2vw, 92px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.005em;
  margin-bottom: 24px;
}

.hero h1 .accent {
  color: var(--brass);
}

.hero .lede {
  font-size: 18px;
  line-height: 1.58;
  color: var(--ink-2);
  max-width: 34em;
  margin-bottom: 28px;
}

.hero .lede strong {
  color: var(--ink);
  font-weight: 600;
}

.install {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--rule-2);
  background: var(--screen);
  padding: 10px 12px;
  margin-bottom: 18px;
  max-width: min(420px, 100%);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--ink) 6%, transparent);
}

.install .prompt {
  color: var(--brass);
  font-family: var(--font-mono);
  font-size: 13px;
}

.install code {
  flex: 1;
  min-width: 0;
  font-size: 13.5px;
  color: var(--ink);
  overflow-x: auto;
  white-space: nowrap;
}

.install button {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--rule);
  padding: 4px 8px;
  cursor: pointer;
  border-radius: 2px;
}

.install button:hover {
  color: var(--brass);
  border-color: var(--brass-dim);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 11px 18px;
  border: 1px solid var(--rule-2);
  border-radius: 2px;
  color: var(--ink);
  background: var(--panel);
}

.btn svg {
  width: 15px;
  height: 15px;
}

.btn-primary {
  background: var(--brass);
  border-color: var(--brass);
  color: var(--brass-ink);
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--brass-2);
  border-color: var(--brass-2);
  color: var(--brass-ink);
}

.btn-ghost:hover {
  border-color: var(--brass-dim);
  color: var(--brass);
}

/* Nameplate: the numbers that do not go stale. */
.plate {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--rule);
  background:
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--ink) 4%, transparent),
      transparent 40%
    ),
    var(--panel);
}

.plate .cell {
  padding: 12px 14px 11px;
  border-right: 1px solid var(--rule);
}

.plate .cell:last-child {
  border-right: 0;
}

.plate .value {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
}

.plate .value em {
  font-style: normal;
  color: var(--brass);
}

.plate .label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 6px;
}

/* ---------------------------------------------------------------- bench */

.bench {
  border: 1px solid var(--rule-2);
  background: var(--panel);
  box-shadow: var(--shadow);
  position: relative;
}

.bench::before,
.bench::after,
.panel::before,
.panel::after {
  content: "";
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #7b8288, #22282c 72%);
  box-shadow:
    inset 0 0 0 1px rgb(0 0 0 / 0.55),
    0 1px 0 rgb(255 255 255 / 0.12);
}

.bench::before,
.panel::before {
  top: 7px;
  left: 7px;
}

.bench::after,
.panel::after {
  top: 7px;
  right: 7px;
}

.bench-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px 8px 18px;
  border-bottom: 1px solid var(--rule-2);
  background:
    repeating-linear-gradient(
      90deg,
      color-mix(in srgb, var(--brass) 10%, transparent) 0 2px,
      transparent 2px 9px
    ),
    var(--panel-2);
}

.bench-head .title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.bench-head .led {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--moss);
  box-shadow: 0 0 6px var(--moss);
  animation: pulse 3.6s ease-in-out infinite;
}

.bench-head .meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}

.bench-body {
  padding: 12px;
  display: grid;
  gap: 10px;
}

.layers {
  display: grid;
  gap: 6px;
}

.layer {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 7px 10px 7px 9px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--tier, var(--rule-2));
  background: var(--panel-2);
  cursor: pointer;
  text-align: left;
  color: inherit;
  font: inherit;
}

.layer:hover {
  border-color: var(--rule-2);
  border-left-color: var(--tier, var(--brass));
}

.layer[aria-pressed="false"] {
  opacity: 0.45;
}

.layer .switch {
  width: 12px;
  height: 12px;
  border: 1px solid var(--rule-2);
  background: var(--screen);
  position: relative;
}

.layer[aria-pressed="true"] .switch::after {
  content: "";
  position: absolute;
  inset: 2px;
  background: var(--tier, var(--brass));
}

.layer .file {
  display: block;
  min-width: 0;
}

.layer .file .top {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

.layer .file .name {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.layer .file .tier {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--tier, var(--ink-3));
  flex: none;
}

.layer .sample {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}

.layer .format {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--rule);
  padding: 1px 5px;
}

.bench-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.bench-row .label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.ghost-chip {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  background: transparent;
  border: 1px dashed var(--rule-2);
  border-radius: 2px;
  padding: 3px 8px;
  cursor: pointer;
}

.ghost-chip:hover {
  color: var(--brass);
  border-color: var(--brass-dim);
}

.seg {
  display: inline-flex;
  border: 1px solid var(--rule-2);
  background: var(--screen);
}

.seg button {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  padding: 4px 9px;
  background: transparent;
  color: var(--ink-2);
  border: 0;
  border-right: 1px solid var(--rule);
  cursor: pointer;
}

.seg button:last-child {
  border-right: 0;
}

.seg button[aria-pressed="true"] {
  background: var(--brass);
  color: var(--brass-ink);
  font-weight: 600;
}

.tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--rule-2);
  margin-bottom: 0;
}

.tabs button {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: transparent;
  color: var(--ink-3);
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 6px 10px;
  cursor: pointer;
}

.tabs button[aria-selected="true"] {
  color: var(--brass);
  border-bottom-color: var(--brass);
}

.screen {
  background: var(--screen);
  border: 1px solid var(--rule);
  padding: 10px 12px;
  min-height: 168px;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
}

.screen pre {
  margin: 0;
  font-size: 12px;
  line-height: 1.75;
  white-space: pre;
  overflow-x: auto;
}

.jline {
  white-space: pre;
}

.jline .key {
  color: var(--ink);
}

.jline .punct {
  color: var(--ink-3);
}

.jline .str {
  color: var(--tier-file, var(--steel));
}

.jline .num {
  color: var(--tier-env, var(--brass));
}

.jline .bool {
  color: var(--tier-env, var(--brass));
}

.jline .val {
  border-bottom: 1px dotted transparent;
  cursor: help;
}

.jline .val:hover {
  border-bottom-color: currentColor;
}

.refusal {
  border-left: 3px solid var(--rust);
  background: color-mix(in srgb, var(--rust) 8%, transparent);
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink);
}

.refusal .why {
  display: block;
  color: var(--rust);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 3px;
}

.bench-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px 9px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-3);
  min-height: 32px;
}

.bench-foot .probe {
  color: var(--ink-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bench-foot .right {
  margin-left: auto;
  white-space: nowrap;
}

/* Drawings, plate markings and chrome are not prose: a selection box dragged
   across a gear is a reader fight, not a feature. */
.train,
.plate,
.bench-head,
.step .no,
.station .idx,
.station .icon,
.wordmark,
.site-nav,
.site-footer .links,
.icon-button,
.layer,
.seg,
.tabs,
.btn,
.ghost-chip,
.knurl {
  -webkit-user-select: none;
  user-select: none;
}

.train svg,
.station .icon,
.wordmark .gear {
  pointer-events: none;
}

.train {
  cursor: default;
}

/* Values take the colour of the layer that won. */
.t-default {
  color: var(--tier-default);
}

.t-file {
  color: var(--tier-file);
}

.t-env {
  color: var(--tier-env);
}

.t-override {
  color: var(--tier-override);
}

.tier-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--tier, var(--rule-2));
}

.jtree {
  white-space: pre;
  font-family: var(--font-mono);
}

.refusal code {
  white-space: normal;
  border: 0;
  background: transparent;
  color: var(--brass);
  padding: 0;
}

/* --------------------------------------------------------------- sections */

.section {
  padding: 84px 0;
  border-bottom: 1px solid var(--rule);
  position: relative;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 24px;
  margin-bottom: 40px;
}

.section-head .kicker {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-head .kicker::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--brass);
  display: inline-block;
}

.section-head h2 {
  font-size: clamp(34px, 4.4vw, 52px);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.section-head .aside {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  text-align: right;
  line-height: 1.7;
  padding-bottom: 6px;
}

.section-head p.sub {
  grid-column: 1 / -1;
  color: var(--ink-2);
  max-width: 60ch;
  margin: 6px 0 0;
}

/* The line: four gears, four steps. */

.train {
  border: 1px solid var(--rule);
  /* A flat plate, so a gear filled with the same colour truly occludes the shaft
     behind it instead of leaving a visible disc. */
  background: var(--panel);
  padding: 10px 18px 4px;
  margin-bottom: 28px;
}

.train svg {
  width: 100%;
  height: auto;
}

.train .gear-body {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  opacity: 0.9;
}

.train .gear-hub {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
  stroke-dasharray: 3 4;
  opacity: 0.55;
}

.train .label-tier {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  fill: currentColor;
}

.train .label-src {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--ink-3);
}

.train .shaft {
  stroke: var(--rule-2);
  stroke-width: 8;
  stroke-linecap: butt;
}

.train .shaft-cap {
  fill: var(--panel-2);
  stroke: var(--rule-2);
}

.train .out-label {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  fill: var(--ink);
}

.train .dim {
  stroke: var(--rule-2);
  stroke-width: 1;
}

.train .dim-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  fill: var(--ink-3);
}

.gear-spin {
  transform-box: fill-box;
  transform-origin: center;
  animation: turn 42s linear infinite;
}

.gear-spin.rev {
  animation-direction: reverse;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--rule);
}

.step {
  display: flex;
  flex-direction: column;
  padding: 20px 20px 22px;
  border-right: 1px solid var(--rule);
  background: var(--panel);
  position: relative;
}

.step:last-child {
  border-right: 0;
}

.step .no {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--brass);
}

.step h3 {
  font-size: 24px;
  text-transform: uppercase;
  margin: 10px 0 8px;
}

.step p {
  font-size: 14px;
  color: var(--ink-2);
  margin: 0;
}

.step .api {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  color: var(--ink-3);
}

/* Stations. */

.stations {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.station {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule);
  background: var(--panel);
  padding: 22px 22px 24px;
  position: relative;
  overflow: hidden;
}

.station::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    color-mix(in srgb, var(--brass) 60%, transparent) 0 3px,
    transparent 3px 8px
  );
  opacity: 0;
  transition: opacity 0.2s;
}

.station:hover::after {
  opacity: 1;
}

.station .icon {
  width: 30px;
  height: 30px;
  color: var(--brass);
  margin-bottom: 16px;
}

.station .idx {
  position: absolute;
  top: 16px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}

.station h3 {
  font-size: 26px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.station p {
  font-size: 14px;
  color: var(--ink-2);
  margin-bottom: 12px;
}

.station .api {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-3);
  border-top: 1px solid var(--rule);
  padding-top: 10px;
  margin: 0;
  white-space: nowrap;
  overflow-x: auto;
}

.station .api b {
  color: var(--brass);
  font-weight: 500;
}

/* Code and output. */

.duo {
  display: grid;
  grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.68fr);
  gap: 16px;
  align-items: start;
}

.code-card {
  border: 1px solid var(--rule);
  background: var(--panel);
  min-width: 0;
}

.code-card .bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--rule);
  background: var(--panel-2);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.code-card .bar .lang {
  color: var(--brass);
}

.code-card .bar .file {
  text-transform: none;
  letter-spacing: 0.04em;
}

.code-card .bar .spacer {
  margin-left: auto;
}

.code-card .bar button {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-3);
  padding: 2px 6px;
  cursor: pointer;
  border-radius: 2px;
}

.code-card .bar button:hover {
  color: var(--brass);
  border-color: var(--brass-dim);
}

.code-card pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink);
  tab-size: 2;
}

.terminal {
  border: 1px solid var(--rule-2);
  background: var(--screen);
  min-width: 0;
}

.terminal .bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.terminal pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.8;
  white-space: pre;
}

.terminal .cmd {
  color: var(--brass);
}

.terminal .dim {
  color: var(--ink-3);
}

/* Syntax colours, applied by app.js. */
.tok-key {
  color: var(--brass);
}

.tok-str {
  color: var(--moss);
}

.tok-num {
  color: var(--tier-file, var(--steel));
}

.tok-com {
  color: var(--ink-3);
  font-style: italic;
}

.tok-type {
  color: var(--steel);
}

.tok-fn {
  color: var(--ink);
}

/* Spec tables. */

.spec {
  width: 100%;
  border: 1px solid var(--rule);
  border-collapse: collapse;
  background: var(--panel);
  font-size: 14px;
}

.spec caption {
  caption-side: top;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-bottom: 10px;
}

.spec th {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule-2);
  background: var(--panel-2);
  white-space: nowrap;
}

.spec td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  color: var(--ink-2);
}

.spec tr:last-child td {
  border-bottom: 0;
}

.spec td:first-child {
  color: var(--ink);
  white-space: nowrap;
}

.spec code {
  font-size: 12.5px;
  white-space: nowrap;
}

.spec .strength {
  display: inline-block;
  width: 44px;
  height: 4px;
  background: var(--rule);
  position: relative;
  vertical-align: middle;
  margin-right: 8px;
}

.spec .strength span {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--brass);
}

.tables {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
}

/* --------------------------------------------------------------- footer */

.site-footer {
  padding: 40px 0 56px;
  color: var(--ink-3);
  font-size: 13px;
}

.site-footer .inner {
  display: flex;
  gap: 24px;
  align-items: baseline;
  flex-wrap: wrap;
}

.site-footer .links {
  margin-left: auto;
  display: flex;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-footer a {
  color: var(--ink-2);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--brass);
}

/* ----------------------------------------------------------------- docs */

.docs-layout {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 56px;
  padding: 56px 0 72px;
  align-items: start;
}

.docs-toc {
  position: sticky;
  top: 96px;
  max-height: calc(100vh - 120px);
  overflow: auto;
  border-left: 1px solid var(--rule);
  padding-left: 16px;
  font-size: 13px;
}

.docs-toc .title {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 10px;
}

.docs-toc a {
  display: block;
  color: var(--ink-2);
  text-decoration: none;
  padding: 3px 0 3px 10px;
  border-left: 2px solid transparent;
  margin-left: -18px;
  padding-left: 16px;
  line-height: 1.45;
}

.docs-toc a:hover {
  color: var(--ink);
}

.docs-toc a[aria-current="true"] {
  color: var(--brass);
  border-left-color: var(--brass);
  border-radius: 0;
}

.docs-toc .sub {
  padding-left: 26px;
  font-size: 12px;
  color: var(--ink-3);
}

.docs-body {
  min-width: 0;
  max-width: 78ch;
}

.docs-body h2 {
  font-size: 40px;
  text-transform: uppercase;
  margin: 56px 0 14px;
  scroll-margin-top: 100px;
}

.docs-body h2:first-child {
  margin-top: 0;
}

.docs-body h3 {
  font-size: 24px;
  margin: 34px 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.docs-body h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 26px 0 8px;
}

.docs-body p,
.docs-body li {
  color: var(--ink-2);
}

.docs-body strong {
  color: var(--ink);
}

.docs-body ul,
.docs-body ol {
  padding-left: 22px;
  margin: 0 0 18px;
}

.docs-body li {
  margin-bottom: 6px;
}

.docs-body .lead {
  font-size: 18px;
  color: var(--ink-2);
}

.docs-body .code-card,
.docs-body .terminal {
  margin: 16px 0 20px;
}

.docs-body .caption {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 22px 0 -6px;
}

.note {
  border-left: 3px solid var(--brass);
  border-radius: 0 6px 6px 0;
  background: color-mix(in srgb, var(--brass) 7%, transparent);
  padding: 12px 16px;
  margin: 20px 0;
  font-size: 14.5px;
  color: var(--ink-2);
}

.note strong {
  color: var(--ink);
}

.note.warn {
  border-left-color: var(--rust);
  background: color-mix(in srgb, var(--rust) 7%, transparent);
}

.verb {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 12px;
  border-top: 1px solid var(--rule);
  padding: 10px 0;
  font-size: 14px;
}

.verb dt {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--brass);
}

.verb dd {
  margin: 0;
  color: var(--ink-2);
}

/* --------------------------------------------------------------- API ref */

.api-package {
  margin-top: 44px;
  padding-top: 26px;
  border-top: 1px solid var(--rule);
}

.api-package .section-head h2 {
  letter-spacing: 0.02em;
}

.api-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 18px;
}

.api-item {
  border: 1px solid var(--rule);
  background: var(--panel);
  padding: 14px 16px 12px;
  scroll-margin-top: 100px;
  min-width: 0;
}

.api-item h3 {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
  letter-spacing: 0;
  text-transform: none;
}

.api-signature {
  display: block;
  max-width: 100%;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--brass);
  background: var(--screen);
  border: 1px solid var(--rule);
  padding: 7px 10px;
  overflow-x: auto;
  white-space: pre;
  margin-bottom: 10px;
}

.api-item p {
  font-size: 14px;
  color: var(--ink-2);
  margin: 0 0 8px;
}

.api-item p:last-child {
  margin-bottom: 0;
}

.api-members {
  margin-top: 10px;
  border-top: 1px solid var(--rule);
  padding-top: 8px;
}

.api-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 6px;
}

.api-members ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.api-members li {
  display: grid;
  gap: 4px;
}

.api-member {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink);
  background: transparent;
  border: 0;
  padding: 0;
  overflow-x: auto;
  white-space: pre;
}

.api-members p {
  font-size: 13.5px;
  color: var(--ink-3);
  margin: 0;
}

.api-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 4px 0 18px;
}

.api-jump a {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-2);
  text-decoration: none;
  border: 1px solid var(--rule);
  padding: 2px 7px;
  background: var(--panel);
}

.api-jump a:hover {
  color: var(--brass);
  border-color: var(--brass-dim);
}

/* ------------------------------------------------------------- showcase */

.shop {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.panel {
  border: 1px solid var(--rule);
  background: var(--panel);
  position: relative;
  min-width: 0;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule);
  background: var(--panel-2);
}

.panel-head .title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.panel-head .hint {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-3);
}

.panel-body {
  padding: 14px;
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.field .label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.field select {
  width: max-content;
  min-width: 110px;
  justify-self: start;
  padding: 4px 26px 4px 8px;
  font-size: 11px;
}

.field .label .tier-dot {
  width: 7px;
  height: 7px;
  background: var(--tier);
  border-radius: 50%;
}

textarea,
input[type="text"],
select {
  width: 100%;
  background: var(--screen);
  color: var(--ink);
  border: 1px solid var(--rule-2);
  border-radius: 2px;
  padding: 9px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  resize: vertical;
}

textarea {
  min-height: 96px;
  tab-size: 2;
}

textarea:focus,
input:focus,
select:focus,
button:focus-visible,
a:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--brass) 70%, transparent);
  outline-offset: 1px;
}

select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%),
    linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position:
    calc(100% - 15px) calc(50% - 2px),
    calc(100% - 10px) calc(50% - 2px);
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 28px;
}

.shop .screen {
  min-height: 260px;
}

.split-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.stat-line {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-3);
}

.stat-line b {
  color: var(--ink-2);
  font-weight: 500;
}

.tier-key {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

.tier-key span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.model {
  border-top: 1px solid var(--rule);
  padding-top: 10px;
}

.model .label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 6px;
}

.model pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--ink-2);
  white-space: pre;
  overflow-x: auto;
}

.tier-key i {
  width: 8px;
  height: 8px;
  background: var(--dot);
  border-radius: 50%;
}

/* -------------------------------------------------------------- motion */

@keyframes turn {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .gear-spin,
  .bench-head .led {
    animation: none;
  }
}

/* ------------------------------------------------------------ responsive */

@media (width <= 1080px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

  .stations {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tables {
    grid-template-columns: minmax(0, 1fr);
  }

  .duo {
    grid-template-columns: minmax(0, 1fr);
  }

  .docs-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .docs-toc {
    position: static;
    max-height: none;
    border-left: 0;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 12px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 2px 14px;
  }

  .docs-toc .title {
    width: 100%;
  }

  .docs-toc a {
    margin: 0;
    padding: 3px 0;
    border-left: 0;
  }

  .docs-toc .sub {
    display: none;
  }
}

@media (width <= 860px) {
  :root {
    --gutter: 18px;
  }

  body {
    font-size: 16px;
  }

  .site-header .inner {
    gap: 12px;
    height: 60px;
  }

  .wordmark .kind,
  .wordmark .dash {
    display: none;
  }

  .site-nav {
    gap: 0;
  }

  .site-nav a {
    font-size: 11px;
    padding: 6px 7px;
  }

  .hero {
    padding: 40px 0 48px;
  }

  .hero h1 {
    font-size: clamp(40px, 12vw, 60px);
  }

  .hero .lede {
    font-size: 16.5px;
  }

  .section {
    padding: 56px 0;
  }

  .section-head {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .section-head .aside {
    text-align: left;
    padding: 0;
  }

  .plate {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .plate .cell:nth-child(2) {
    border-right: 0;
  }

  .plate .cell:nth-child(-n + 2) {
    border-bottom: 1px solid var(--rule);
  }

  .steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .step {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }

  .step:last-child {
    border-bottom: 0;
  }

  .stations,
  .shop,
  .split-2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .docs-body h2 {
    font-size: 32px;
  }

  .verb {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .site-footer .links {
    margin-left: 0;
  }
}

@media (width <= 560px) {
  .site-header .inner {
    flex-wrap: wrap;
    height: auto;
    padding: 8px 0;
    gap: 6px 10px;
  }

  .site-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    margin-left: 0;
  }

  .header-tools {
    margin-left: auto;
  }

  .layer {
    grid-template-columns: 12px minmax(0, 1fr);
  }

  .layer .format {
    display: none;
  }
}

/* The page scroll bar shows while the page moves or under the pointer and
   hides a moment after; it keeps its place, so nothing shifts. */
@supports selector(::-webkit-scrollbar) {
  html:not(.scrolling)::-webkit-scrollbar-thumb { background: transparent; border-color: transparent; box-shadow: none; }
}
@supports not selector(::-webkit-scrollbar) {
  html:not(.scrolling) { scrollbar-color: transparent transparent; }
}

/* Long identifiers in running text break rather than widen the page. */
:where(p, li, td, dd, h1, h2, h3, h4) code { white-space: pre-wrap; overflow-wrap: anywhere; }

/* Grid items give way to their scrolling code instead of widening the page. */
.duo > * { min-width: 0; }
@media (width <= 560px) {
  table.spec { display: block; overflow-x: auto; }
}