/*
 * Overalls website stylesheet.
 *
 * The visual language is The Monospace Web by Oskar Wickström (MIT,
 * https://github.com/owickstrom/the-monospace-web; see
 * assets/monospace-web-LICENSE.md), as adapted for Overalls' own web
 * interface. Typeface: JetBrains Mono (SIL OFL 1.1, assets/fonts).
 *
 * Rules: one grid cell is 1ch wide and var(--line-height) tall. Colours come
 * only from the four tokens below. No rounded corners, shadows or gradients.
 */

/* ---- tokens ---------------------------------------------------------- */
:root {
  --font-family: "JetBrains Mono", ui-monospace, monospace;
  /* 1.2rem, declared as 1.203125rem (19.25px at 16px, 16.84375px at 14px) so
     browser layout units of 1/64 px stay exact and lines never drift. */
  --line-height: 1.203125rem;
  --border-thickness: 2px;
  --font-weight-normal: 500;
  --font-weight-medium: 600;
  --font-weight-bold: 800;
  --text-color: #000;
  --text-color-alt: #666;
  --background-color: #fff;
  --background-color-alt: #eee;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --text-color: #fff;
  --text-color-alt: #aaa;
  --background-color: #000;
  --background-color-alt: #111;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --text-color: #fff;
    --text-color-alt: #aaa;
    --background-color: #000;
    --background-color-alt: #111;
    color-scheme: dark;
  }
}

/* ---- fonts ----------------------------------------------------------- */
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(../fonts/jetbrains-mono-500.woff2) format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: italic;
  font-weight: 500;
  font-display: swap;
  src: url(../fonts/jetbrains-mono-500-italic.woff2) format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(../fonts/jetbrains-mono-600.woff2) format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(../fonts/jetbrains-mono-800.woff2) format("woff2");
}

/* ---- base elements ---------------------------------------------------- */
/*
 * Adapted from The Monospace Web by Oskar Wickström (MIT License,
 * https://github.com/owickstrom/the-monospace-web; see
 * assets/monospace-web-LICENSE.md). Differences from upstream: no
 * external font import (fonts.css serves JetBrains Mono locally), colours
 * come from tokens.css, the universal sibling margin is scoped to flow
 * containers, the 80ch page cap moves to .prose, and form controls include
 * <select>. Everything else keeps the upstream character grid: 1ch wide,
 * var(--line-height) tall.
 */
:root {
  font-family: var(--font-family);
  font-optical-sizing: auto;
  font-weight: var(--font-weight-normal);
  font-style: normal;
  font-variant-numeric: tabular-nums lining-nums;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

/* Vertical rhythm. Upstream applies `* + *`; here it is limited to flow
   containers so renderer-owned DOM (xterm rows, topbar, dialogs, streams)
   keeps its own geometry. */
:where(.stack, .prose, .panel-body) > * + * {
  margin-top: var(--line-height);
}

html {
  width: 100%;
  margin: 0;
  padding: 0;
  background: var(--background-color);
  color: var(--text-color);
}

body {
  position: relative;
  width: 100%;
  min-height: 100dvh;
  margin: 0;
  padding: 0;
  line-height: var(--line-height);
  overflow-x: hidden;
}

@media screen and (max-width: 480px) {
  :root {
    font-size: 14px;
  }
}

.prose {
  max-width: calc(min(80ch, round(down, 100%, 1ch)));
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  margin: calc(var(--line-height) * 2) 0 var(--line-height);
  line-height: var(--line-height);
}

h1 {
  font-size: 2rem;
  line-height: calc(2 * var(--line-height));
  margin-bottom: calc(var(--line-height) * 2);
  text-transform: uppercase;
}
h2 {
  font-size: 1rem;
  text-transform: uppercase;
}
h3, h4, h5, h6 {
  font-size: 1rem;
}
h1.ident, .ident h1 {
  font-size: 1rem;
  line-height: var(--line-height);
  text-transform: none;
  margin-bottom: var(--line-height);
}
:is(h1, h2, h3, h4, h5, h6):first-child {
  margin-top: 0;
}

hr {
  position: relative;
  display: block;
  height: var(--line-height);
  margin: calc(var(--line-height) * 1.5) 0;
  border: none;
  color: var(--text-color);
}
hr:after {
  display: block;
  content: "";
  position: absolute;
  top: calc(var(--line-height) / 2 - var(--border-thickness));
  left: 0;
  width: 100%;
  border-top: calc(var(--border-thickness) * 3) double var(--text-color);
  height: 0;
}

a {
  text-decoration-thickness: var(--border-thickness);
}

a:link, a:visited {
  color: var(--text-color);
}

p {
  margin: 0 0 var(--line-height);
  word-break: break-word;
  word-wrap: break-word;
  hyphens: auto;
}

strong {
  font-weight: var(--font-weight-bold);
}
em {
  font-style: italic;
}

sub {
  position: relative;
  display: inline-block;
  margin: 0;
  vertical-align: sub;
  line-height: 0;
  width: calc(1ch / 0.75);
  font-size: .75rem;
}

table {
  position: relative;
  top: calc(var(--line-height) / 2);
  width: calc(round(down, 100%, 1ch));
  border-collapse: collapse;
  margin: 0 0 calc(var(--line-height) * 2);
}

th, td {
  border: var(--border-thickness) solid var(--text-color);
  padding:
    calc((var(--line-height) / 2))
    calc(1ch - var(--border-thickness) / 2)
    calc((var(--line-height) / 2) - (var(--border-thickness)))
  ;
  line-height: var(--line-height);
  vertical-align: top;
  text-align: left;
}
table tbody tr:first-child > * {
  padding-top: calc((var(--line-height) / 2) - var(--border-thickness));
}

th {
  font-weight: var(--font-weight-medium);
}
.width-min {
  width: 0%;
  white-space: nowrap;
}
.width-auto {
  width: 100%;
}
td.num, th.num {
  text-align: right;
}

.header {
  margin-bottom: calc(var(--line-height) * 2);
}
.header h1 {
  margin: 0;
}
.header tr td:last-child {
  text-align: right;
}

img, video {
  display: block;
  width: 100%;
  object-fit: contain;
  overflow: hidden;
}
img {
  font-style: italic;
  color: var(--text-color-alt);
}

details {
  border: var(--border-thickness) solid var(--text-color);
  padding: calc(var(--line-height) - var(--border-thickness)) 1ch;
  margin-bottom: var(--line-height);
}

summary {
  font-weight: var(--font-weight-medium);
  cursor: pointer;
}
details[open] summary {
  margin-bottom: var(--line-height);
}

details ::marker {
  display: inline-block;
  content: '▶';
  margin: 0;
}
details[open] ::marker {
  content: '▼';
}

details :last-child {
  margin-bottom: 0;
}

pre {
  white-space: pre;
  overflow-x: auto;
  margin: var(--line-height) 0;
}
pre.columns {
  white-space: pre;
}
figure pre {
  margin: 0;
}

pre, code, kbd, samp {
  font-family: var(--font-family);
}

code {
  font-weight: var(--font-weight-medium);
}

figure {
  margin: calc(var(--line-height) * 2) 3ch;
}

figcaption {
  display: block;
  font-style: italic;
  margin-top: var(--line-height);
}

ul, ol {
  padding: 0;
  margin: 0 0 var(--line-height);
}

ul {
  list-style-type: square;
  padding: 0 0 0 2ch;
}
ol {
  list-style-type: none;
  counter-reset: item;
  padding: 0;
}
ol ul,
ol ol,
ul ol,
ul ul {
  padding: 0 0 0 3ch;
  margin: 0;
}
ol li:before {
  content: counters(item, ".") ". ";
  counter-increment: item;
  font-weight: var(--font-weight-medium);
}

li {
  margin: 0;
  padding: 0;
}

li::marker {
  line-height: 0;
}

::-webkit-scrollbar {
    height: var(--line-height);
}

input, button, textarea, select {
  border: var(--border-thickness) solid var(--text-color);
  padding:
    calc(var(--line-height) / 2 - var(--border-thickness))
    calc(1ch - var(--border-thickness));
  margin: 0;
  font: inherit;
  font-weight: inherit;
  height: calc(var(--line-height) * 2);
  width: auto;
  overflow: visible;
  background: var(--background-color);
  color: var(--text-color);
  line-height: normal;
  -webkit-font-smoothing: inherit;
  -moz-osx-font-smoothing: inherit;
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
}

textarea {
  height: auto;
  min-height: calc(var(--line-height) * 4);
  line-height: var(--line-height);
  resize: vertical;
}

select {
  padding-right: 3ch;
  cursor: pointer;
}
.select {
  position: relative;
  display: inline-block;
  width: auto;
}
.select::after {
  content: "▾";
  position: absolute;
  right: 1ch;
  top: 0;
  line-height: calc(var(--line-height) * 2);
  pointer-events: none;
}
.select select {
  width: 100%;
}

input[type=checkbox],
input[type=radio] {
  display: inline-grid;
  place-content: center;
  vertical-align: top;
  width: 2ch;
  height: var(--line-height);
  padding: 0;
  cursor: pointer;
}
input[type=checkbox]:checked:before,
input[type=radio]:checked:before {
  content: "";
  width: 1ch;
  height: calc(var(--line-height) / 2);
  background: var(--text-color);
}
input[type=radio],
input[type=radio]:before {
  border-radius: 100%;
}

button:focus, input:focus, select:focus, textarea:focus {
  --border-thickness: 3px;
  outline: none;
}
a:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: var(--border-thickness) solid var(--text-color);
  outline-offset: 2px;
}

input:not([type=checkbox]):not([type=radio]) {
  width: calc(round(down, 100%, 1ch));
}
::placeholder {
  color: var(--text-color-alt);
  opacity: 1;
}
::-ms-input-placeholder {
  color: var(--text-color-alt);
}
button::-moz-focus-inner {
  padding: 0;
  border: 0
}

button {
  text-transform: uppercase;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
}

button:hover {
  background: var(--background-color-alt);
}
@media (prefers-reduced-motion: no-preference) {
  button:active {
    transform: translate(2px, 2px);
  }
}
button:disabled, input:disabled, select:disabled, textarea:disabled {
  cursor: not-allowed;
  color: var(--text-color-alt);
  border-color: var(--text-color-alt);
  background: var(--background-color);
}

label {
  display: block;
  width: calc(round(down, 100%, 1ch));
  height: auto;
  line-height: var(--line-height);
  font-weight: var(--font-weight-medium);
  margin: 0;
}

label input, label select, label textarea {
  width: 100%;
}
label input:not([type=checkbox]):not([type=radio]), label select, label textarea, label > .select {
  display: block;
  width: 100%;
}

::selection {
  background: var(--text-color);
  color: var(--background-color);
}

.tree, .tree ul {
  position: relative;
  padding-left: 0;
  list-style-type: none;
  line-height: var(--line-height);
}
.tree ul {
  margin: 0;
}
.tree ul li {
  position: relative;
  padding-left: 1.5ch;
  margin-left: 1.5ch;
  border-left: var(--border-thickness) solid var(--text-color);
}
.tree ul li:before {
  position: absolute;
  display: block;
  top: calc(var(--line-height) / 2);
  left: 0;
  content: "";
  width: 1ch;
  border-bottom: var(--border-thickness) solid var(--text-color);
}
.tree ul li:last-child {
  border-left: none;
}
.tree ul li:last-child:after {
  position: absolute;
  display: block;
  top: 0;
  left: 0;
  content: "";
  height: calc(var(--line-height) / 2);
  border-left: var(--border-thickness) solid var(--text-color);
}

.grid {
  --grid-cells: 0;
  display: flex;
  gap: 1ch;
  width: calc(round(down, 100%, (1ch * var(--grid-cells)) - (1ch * var(--grid-cells) - 1)));
  margin-bottom: var(--line-height);
}

.grid > *,
.grid > input {
  flex: 0 0 calc(round(down, (100% - (1ch * (var(--grid-cells) - 1))) / var(--grid-cells), 1ch));
}
.grid:has(> :last-child:nth-child(1)) { --grid-cells: 1; }
.grid:has(> :last-child:nth-child(2)) { --grid-cells: 2; }
.grid:has(> :last-child:nth-child(3)) { --grid-cells: 3; }
.grid:has(> :last-child:nth-child(4)) { --grid-cells: 4; }
.grid:has(> :last-child:nth-child(5)) { --grid-cells: 5; }
.grid:has(> :last-child:nth-child(6)) { --grid-cells: 6; }
.grid:has(> :last-child:nth-child(7)) { --grid-cells: 7; }
.grid:has(> :last-child:nth-child(8)) { --grid-cells: 8; }
.grid:has(> :last-child:nth-child(9)) { --grid-cells: 9; }


/* ---- components ------------------------------------------------------- */
/* Shared components: buttons, status labels, panels, fields, key/value lists,
   dialogs, layout helpers and the utility classes hooks and tests rely on. */
.console-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1ch;
  text-decoration: none;
  white-space: nowrap;
  text-transform: uppercase;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  border: var(--border-thickness) solid var(--text-color);
  background: var(--background-color);
  color: var(--text-color);
  height: calc(var(--line-height) * 2);
  padding: calc(var(--line-height) / 2 - var(--border-thickness)) calc(1ch - var(--border-thickness));
  line-height: normal;
}
a.console-button {
  line-height: calc(var(--line-height) * 2 - var(--border-thickness) * 2);
  padding-top: 0;
  padding-bottom: 0;
}
.console-button:hover {
  background: var(--background-color-alt);
}
.console-button.primary {
  background: var(--text-color);
  color: var(--background-color);
}
.console-button.primary:hover {
  background: var(--text-color-alt);
  border-color: var(--text-color-alt);
}
.console-button.ghost {
  border-color: transparent;
}
.console-button.ghost:hover {
  border-color: var(--text-color);
}
.console-button.danger {
  font-weight: var(--font-weight-bold);
  border-style: double;
  border-width: calc(var(--border-thickness) * 3);
  padding-left: calc(1ch - var(--border-thickness) * 3);
  padding-right: calc(1ch - var(--border-thickness) * 3);
}
.console-button:disabled, .console-button[aria-disabled="true"] {
  cursor: not-allowed;
  color: var(--text-color-alt);
  border-color: var(--text-color-alt);
  background: var(--background-color);
}
.console-button.compact {
  height: var(--line-height);
  padding-top: 0;
  padding-bottom: 0;
  border-width: 0;
  text-decoration: underline;
  text-decoration-thickness: var(--border-thickness);
}

/* Status is text: [state]. The brackets are decoration; DOM text stays exact. */
.status-label {
  display: inline-block;
  white-space: nowrap;
}
.status-label::before {
  content: "[";
}
.status-label::after {
  content: "]";
}
.status-label[data-state="running"],
.status-label[data-tone="success"] {
  font-weight: var(--font-weight-bold);
}
.status-label[data-state="failed"],
.status-label[data-tone="danger"],
.status-label[data-tone="warning"] {
  background: var(--text-color);
  color: var(--background-color);
  font-weight: var(--font-weight-bold);
}
.status-label[data-state="stopped"],
.status-label[data-state="pending"],
.status-label[data-tone="muted"] {
  color: var(--text-color-alt);
}

.panel {
  border: var(--border-thickness) solid var(--text-color);
  padding: calc(var(--line-height) - var(--border-thickness)) calc(2ch - var(--border-thickness));
  margin: 0 0 var(--line-height);
  min-width: 0;
}
.panel > header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0 2ch;
  margin-bottom: var(--line-height);
}
.panel > header h2, .panel > header h3 {
  margin: 0;
}
.panel-body > :last-child,
.panel > :last-child {
  margin-bottom: 0;
}
.panel.dashed, .empty-state {
  border-style: dashed;
}
.panel.danger {
  border-style: double;
  border-width: calc(var(--border-thickness) * 3);
  padding: calc(var(--line-height) - var(--border-thickness) * 3) calc(2ch - var(--border-thickness) * 3);
}
.empty-state {
  border: var(--border-thickness) dashed var(--text-color-alt);
  padding: calc(var(--line-height) - var(--border-thickness)) calc(2ch - var(--border-thickness));
  margin: 0 0 var(--line-height);
  color: var(--text-color-alt);
}
.empty-state h2 {
  margin-top: 0;
  color: var(--text-color);
}
.empty-state > :last-child {
  margin-bottom: 0;
}

.page-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0 2ch;
  margin-bottom: var(--line-height);
}
.page-heading h1 {
  margin: 0 0 var(--line-height);
}
.page-heading p {
  color: var(--text-color-alt);
  margin: 0 0 var(--line-height);
}
.heading-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--line-height) 1ch;
  margin-bottom: var(--line-height);
}

/* Key/value lists */
dl {
  margin: 0 0 var(--line-height);
}
dl.kv > div {
  display: grid;
  grid-template-columns: minmax(12ch, max-content) minmax(0, 1fr);
  gap: 0 2ch;
}
dl.kv dt {
  color: var(--text-color-alt);
  font-weight: var(--font-weight-medium);
}
dl.kv dd {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
}
dl.kv.stacked > div {
  grid-template-columns: minmax(0, 1fr);
}

/* Layout helpers */
.stack > :last-child {
  margin-bottom: 0;
}
.row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0 1ch;
}
.row.between {
  justify-content: space-between;
}
.row.actions {
  gap: var(--line-height) 1ch;
  margin-bottom: var(--line-height);
}
.cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(32ch, 1fr));
  gap: var(--line-height) 2ch;
  margin-bottom: var(--line-height);
}
.cols > .panel {
  margin-bottom: 0;
}
.muted {
  color: var(--text-color-alt);
}
.inverse {
  background: var(--text-color);
  color: var(--background-color);
}
.glyph {
  display: inline;
}
.nowrap {
  white-space: nowrap;
}
.break {
  overflow-wrap: anywhere;
}
.hidden {
  display: none !important;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
[hidden] {
  display: none;
}

/* Shell: skip link, brand, public header (ported from Kittens shell.css). */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1ch;
  z-index: 100;
  padding: 0 1ch;
  line-height: calc(var(--line-height) * 2);
  background: var(--background-color);
  border: var(--border-thickness) solid var(--text-color);
}
.skip-link:focus {
  top: 0;
}
.console-brand {
  display: inline-block;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  text-decoration: none;
  line-height: var(--line-height);
}
.console-brand .brand-dot {
  color: var(--text-color-alt);
}
.public-page {
  padding: var(--line-height) 2ch;
  max-width: calc(min(100ch, round(down, 100%, 1ch)));
  margin: 0 auto;
}
.public-header .title {
  margin: 0;
}
.public-header .title .console-brand {
  font-size: 2rem;
  line-height: calc(2 * var(--line-height));
}
.public-header .tagline {
  margin: 0;
  color: var(--text-color-alt);
  text-wrap: balance;
}
.public-header th {
  white-space: nowrap;
}
.public-header td a[aria-current="page"] {
  background: var(--text-color);
  color: var(--background-color);
  text-decoration: none;
  padding: 0 1ch;
  margin: 0 -1ch;
}
.appearance-control {
  width: 100%;
}
.appearance-control select {
  height: var(--line-height);
  padding: 0 3ch 0 0;
  border: 0;
  font-weight: var(--font-weight-medium);
}
.appearance-control::after {
  line-height: var(--line-height);
  right: 0;
}

/* Public docs layout (ported from Kittens workspace.css). */
.docs-shell {
  display: grid;
  grid-template-columns: 28ch minmax(0, 1fr);
  gap: var(--line-height) 2ch;
}
.docs-nav nav a {
  display: block;
  text-decoration: none;
}
.docs-nav nav a:hover {
  background: var(--background-color-alt);
}
.docs-nav nav a[aria-current="page"] {
  background: var(--text-color);
  color: var(--background-color);
  font-weight: var(--font-weight-bold);
}
.docs-content {
  min-width: 0;
  max-width: calc(min(80ch, round(down, 100%, 1ch)));
}
.docs-content h1:first-child {
  margin-top: 0;
}
.docs-content :is(ul, ol) {
  margin-bottom: var(--line-height);
}
.docs-content pre, .prose pre, pre.term {
  padding: 0 1ch;
  background: var(--background-color-alt);
  max-width: 100%;
}
.docs-content code, .prose code {
  overflow-wrap: anywhere;
}
.docs-content table {
  width: 100%;
  table-layout: auto;
}
.docs-content td {
  overflow-wrap: anywhere;
}
blockquote {
  margin: 0 0 var(--line-height);
  padding-left: calc(2ch - var(--border-thickness));
  border-left: var(--border-thickness) solid var(--text-color);
}
.docs-content ol > li + li, .docs-content ul > li + li {
  margin-top: calc(var(--line-height) / 2);
}
.docs-content ol > li > pre {
  margin: calc(var(--line-height) / 2) 0;
}
.pager {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--line-height) 2ch;
  margin-top: calc(var(--line-height) * 2);
  padding-top: calc(var(--line-height) - var(--border-thickness));
  border-top: var(--border-thickness) solid var(--text-color);
}

/* Step ladders: [■] done  [▸] current  [ ] pending. */
.steps {
  list-style: none;
  padding: 0;
  margin: var(--line-height) 0;
}
.steps li {
  padding-left: 4ch;
  text-indent: -4ch;
  color: var(--text-color-alt);
}
.steps li::before {
  content: none;
}
.steps li[data-state="done"] {
  color: var(--text-color);
}
.steps li[data-state="current"] {
  color: var(--text-color);
  font-weight: var(--font-weight-bold);
}
.steps li a {
  color: inherit;
}
.step-marker::before {
  content: "[ ]";
}
[data-state="done"] > .step-marker::before {
  content: "[■]";
}
[data-state="current"] > .step-marker::before {
  content: "[▸]";
}
.steps .step-marker {
  margin-right: 1ch;
}

/* Overalls: landing page pieces. All sizes in ch and line heights. */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) max-content;
  gap: var(--line-height) 3ch;
  align-items: start;
  margin: calc(var(--line-height) * 2) 0 calc(var(--line-height) * 2);
}
.hero h1 {
  margin: 0 0 var(--line-height);
  text-wrap: balance;
}
.hero h1 .line {
  display: block;
}
.hero .lede {
  font-size: 1rem;
  max-width: 60ch;
}
.hero figure {
  margin: 0;
}
.mark {
  /* The two-kitten mark is 35 columns wide. Drawn at 0.875rem it leaves the
     hero headline room for its two lines; line-height in em keeps the box
     drawing joined at the smaller size. */
  font-size: .875rem;
  line-height: 1.2;
  font-weight: var(--font-weight-bold);
  margin: 0;
  overflow: visible;
}
.mark-small {
  display: inline-block;
}
.hero figcaption, .mark-caption {
  color: var(--text-color-alt);
  font-style: normal;
  text-align: center;
}
.panel h3, .panel h4 {
  margin: 0;
}
.feature-group > h3 {
  margin: calc(var(--line-height) * 2) 0 var(--line-height);
}
.feature-group > h3::before {
  content: "### ";
  color: var(--text-color-alt);
}
.panel > header .status-label {
  font-weight: var(--font-weight-medium);
}
.feature-grid .panel p {
  margin: 0;
}
.status-label[data-tone="stable"] {
  font-weight: var(--font-weight-bold);
}
.status-label[data-tone="preview"] {
  color: var(--text-color-alt);
  font-weight: var(--font-weight-medium);
}
.status-label[data-tone="experimental"] {
  background: var(--text-color);
  color: var(--background-color);
  font-weight: var(--font-weight-bold);
}
.legend {
  color: var(--text-color-alt);
}
.diagram {
  margin: calc(var(--line-height) * 2) 0;
}
.diagram pre {
  overflow-x: auto;
  padding: var(--line-height) 2ch;
  border: var(--border-thickness) solid var(--text-color);
  background: var(--background-color);
}
.diagram figcaption {
  color: var(--text-color-alt);
}
pre.term {
  padding: var(--line-height) 2ch;
}
pre.term .prompt, pre .muted {
  color: var(--text-color-alt);
  user-select: none;
}
pre.term b {
  font-weight: var(--font-weight-bold);
}
section {
  margin-bottom: calc(var(--line-height) * 2);
}
section > h2 {
  margin-top: calc(var(--line-height) * 2);
}
section > h2::before {
  content: "## ";
  color: var(--text-color-alt);
}
.section-index {
  color: var(--text-color-alt);
}
.faq details summary {
  font-weight: var(--font-weight-medium);
}
.site-footer {
  margin-top: calc(var(--line-height) * 3);
  padding-top: calc(var(--line-height) - var(--border-thickness));
  border-top: calc(var(--border-thickness) * 3) double var(--text-color);
  color: var(--text-color-alt);
}
.site-footer a:link, .site-footer a:visited {
  color: var(--text-color-alt);
}
.site-footer p {
  margin: 0;
}
.error-page {
  max-width: calc(min(60ch, round(down, 100%, 1ch)));
  margin: calc(var(--line-height) * 4) auto;
  text-align: center;
}
.error-page pre {
  display: inline-block;
  text-align: left;
}

/* Copy buttons, added by site.js only. */
.copyable {
  position: relative;
}
.copy-button {
  position: absolute;
  top: 0;
  right: 0;
  height: var(--line-height);
  padding: 0 1ch;
  border: 0;
  background: var(--text-color);
  color: var(--background-color);
  font-size: 1rem;
  line-height: var(--line-height);
  opacity: 0;
}
.copyable:hover .copy-button, .copy-button:focus {
  opacity: 1;
}
.copy-button:hover {
  background: var(--text-color-alt);
}
@media (hover: none) {
  .copy-button {
    opacity: 1;
  }
}

@media (max-width: 800px) {
  /* The public header table stacks into labelled lines on narrow screens. */
  .public-header .header,
  .public-header .header tbody,
  .public-header .header tr {
    display: block;
    width: auto;
    top: 0;
  }
  .public-header .header th,
  .public-header .header td {
    display: block;
    width: auto;
    border: 0;
    padding: 0;
  }
  .public-header .header tr {
    display: grid;
    grid-template-columns: 14ch minmax(0, 1fr);
  }
  .public-header .header tr:first-child > td:first-child {
    grid-column: 1 / -1;
    margin-bottom: var(--line-height);
  }
  .public-header .header th {
    color: var(--text-color-alt);
  }
  .public-header .header tr td:last-child {
    text-align: left;
  }
  .docs-shell, .hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero figure {
    order: -1;
    justify-self: center;
  }
  .docs-nav {
    border-bottom: var(--border-thickness) solid var(--text-color);
    padding-bottom: calc(var(--line-height) - var(--border-thickness));
  }
  figure {
    margin-left: 0;
    margin-right: 0;
  }
  .table-stack thead {
    display: none;
  }
  .table-stack, .table-stack tbody, .table-stack tr, .table-stack td {
    display: block;
    width: 100%;
    border: 0;
  }
  .table-stack {
    border-top: var(--border-thickness) solid var(--text-color);
    top: 0;
  }
  .table-stack tr {
    border-bottom: var(--border-thickness) solid var(--text-color);
    padding: calc(var(--line-height) - var(--border-thickness)) 0 var(--line-height);
  }
  .table-stack td, .table-stack tbody tr:first-child > * {
    padding: 0;
  }
  .table-stack td[data-label]::before {
    content: attr(data-label) " ";
    color: var(--text-color-alt);
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  :root, :root:not([data-theme="light"]), :root[data-theme="dark"] {
    --text-color: #000;
    --text-color-alt: #444;
    --background-color: #fff;
    --background-color-alt: #fff;
    color-scheme: light;
  }
  .public-header .appearance-row, .copy-button, .skip-link {
    display: none;
  }
}

/* Donors and sponsors: names in full text colour, not the muted dt default. */
dl.kv.sponsors > div {
  grid-template-columns: minmax(20ch, max-content) minmax(0, 1fr);
}
dl.kv.sponsors dt {
  color: var(--text-color);
}
@media (max-width: 480px) {
  dl.kv.sponsors > div {
    grid-template-columns: minmax(0, 1fr);
    margin-bottom: calc(var(--line-height) / 2);
  }
}

/* Newsletter signup: email field and button on one row, stacked on phones. */
.newsletter-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) max-content;
  gap: var(--line-height) 1ch;
  max-width: calc(min(60ch, round(down, 100%, 1ch)));
  margin-bottom: var(--line-height);
}
.newsletter-form input {
  width: 100%;
}
.newsletter-form[data-state="sending"] button {
  color: var(--text-color-alt);
  cursor: progress;
}
.newsletter-status[data-state="done"] {
  color: var(--text-color);
  font-weight: var(--font-weight-medium);
}
.newsletter-status[data-state="error"]::before {
  content: "! ";
}
@media (max-width: 480px) {
  .newsletter-form {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Announcement callout above the header on every page. */
.announcement {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 2ch;
  border: var(--border-thickness) dashed var(--text-color);
  padding: calc(var(--line-height) / 2 - var(--border-thickness)) calc(2ch - var(--border-thickness));
  margin-bottom: var(--line-height);
}
.announcement p {
  margin: 0;
}
.announcement time {
  font-weight: var(--font-weight-bold);
}

/* Inline code: shaded like command blocks so it stands out from monospace body text.
   No horizontal padding, so text stays on the character grid. */
:not(pre) > code {
  background: var(--background-color-alt);
  outline: 2px solid var(--background-color-alt);
}

/* Diagrams in guide pages use the full prose width. */
.docs-content figure.diagram {
  margin-left: 0;
  margin-right: 0;
}