/* The docs site. Plain CSS, no build; light and dark from the platform.
   Every text colour pair here is above 4.5:1 (the axe run in `npm run test:a11y` measures it). */
:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-alt: #f4f5f7;
  --text: #1b1f24;
  --muted: #4d5560;
  --line: #d5d9de;
  --link: #0b57d0;
  --accent: #0b57d0;
  --code-bg: #f4f5f7;
  --ok: #146c2e;
  --error: #b3261e;
  --focus: #0b57d0;
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121417;
    --bg-alt: #1c1f24;
    --text: #e8eaed;
    --muted: #b4bac2;
    --line: #3a4048;
    --link: #8ab4f8;
    --accent: #8ab4f8;
    --code-bg: #1c1f24;
    --ok: #81c995;
    --error: #f2b8b5;
    --focus: #8ab4f8;
  }
}
* { box-sizing: border-box; }
html { background: var(--bg); color: var(--text); }
body { margin: 0; }
a { color: var(--link); }
a:focus-visible, button:focus-visible, textarea:focus-visible, pre:focus-visible, main:focus-visible, iframe:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
main:focus { outline: none; }
.skip { position: absolute; left: -999px; top: 0; background: var(--bg); padding: 0.5rem 1rem; z-index: 10; }
.skip:focus { left: 0.5rem; top: 0.5rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.top { display: flex; align-items: baseline; gap: 0.75rem; padding: 0.75rem 1.5rem; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.version { color: var(--muted); font-size: 0.875rem; }

.layout { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: 2rem; max-width: 80rem; margin: 0 auto; padding: 0 1.5rem; }
.side { padding: 1.25rem 0; border-right: 1px solid var(--line); }
.side ul, .toc ul { list-style: none; margin: 0 0 1rem; padding: 0; }
.side li a { display: block; padding: 0.2rem 0.75rem 0.2rem 0; text-decoration: none; }
.side li a[aria-current="page"] { font-weight: 700; color: var(--text); border-left: 3px solid var(--accent); padding-left: 0.5rem; margin-left: -0.75rem; }
.nav-title { margin: 0.5rem 0 0.25rem; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
main { padding: 1.25rem 0 3rem; min-width: 0; }
article { max-width: 52rem; }
.toc { float: right; width: 14rem; margin: 0 0 1rem 1.5rem; padding: 0.75rem 1rem; border: 1px solid var(--line); border-radius: 6px; font-size: 0.9rem; }
.toc .toc-3 { padding-left: 0.75rem; }
/* WCAG 2.2 target size: a list of links is not inline text, so each one gets 24 px. */
.toc li a { display: inline-block; min-height: 24px; padding: 2px 0; }
.side li a { min-height: 24px; }
@media (max-width: 64rem) { .toc { float: none; width: auto; margin: 0 0 1rem; } }
@media (max-width: 48rem) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .side { border-right: none; border-bottom: 1px solid var(--line); }
  /* A section a row, scrolled sideways: forty links wrapped took two screens before the page began (V36). */
  .side ul { display: flex; flex-wrap: nowrap; gap: 0 1rem; overflow-x: auto; white-space: nowrap; }
}

/* A heading of one long word breaks rather than push a phone's page sideways: in Linux's wider system font
   "Internationalisation" at 2rem is wider than 320 pixels (WCAG 1.4.10, W1). */
h1, h2, h3, h4 { overflow-wrap: break-word; hyphens: auto; }
h1 { font-size: 2rem; line-height: 1.25; margin: 0.5rem 0 1rem; }
h2 { font-size: 1.45rem; margin: 2.25rem 0 0.75rem; padding-top: 0.5rem; border-top: 1px solid var(--line); }
h3 { font-size: 1.15rem; margin: 1.75rem 0 0.5rem; }
h4 { font-size: 1rem; margin: 1.25rem 0 0.5rem; }
blockquote { margin: 1rem 0; padding: 0.25rem 1rem; border-left: 4px solid var(--accent); background: var(--bg-alt); }
code { font: 0.9em/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--code-bg); padding: 0.1em 0.3em; border-radius: 3px; }
/* An address or a call in a sentence breaks anywhere rather than push a phone's page sideways (WCAG 1.4.10). */
:not(pre) > code { overflow-wrap: anywhere; }
pre { margin: 0; padding: 0.9rem 1rem; overflow: auto; background: var(--code-bg); border: 1px solid var(--line); border-radius: 6px; }
pre code { background: none; padding: 0; font-size: 0.85rem; }
figure.code { margin: 1rem 0; }
.code-source { margin: 0.25rem 0 0; font-size: 0.85rem; color: var(--muted); }

/* Positioned, so what is placed inside it (a visually hidden name) scrolls with the table, not the page. */
.table-wrap { position: relative; overflow-x: auto; margin: 1rem 0; }
table { border-collapse: collapse; font-size: 0.92rem; min-width: 60%; }
caption { text-align: left; color: var(--muted); font-size: 0.85rem; padding-bottom: 0.4rem; }
th, td { border: 1px solid var(--line); padding: 0.4rem 0.6rem; vertical-align: top; text-align: left; }
thead th { background: var(--bg-alt); }
tbody th { font-weight: 600; }
table.api td:nth-child(2) code { white-space: pre-wrap; word-break: break-word; }
.range { color: var(--muted); font-size: 0.85em; }

.example { margin: 1.5rem 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.example-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem; padding: 0.5rem 1rem; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.example-head p { margin: 0; }
.example-status { font-size: 0.9rem; color: var(--muted); }
.example[data-state="ok"] .example-status { color: var(--ok); }
.example[data-state="error"] .example-status { color: var(--error); font-weight: 600; }
.example-body { display: grid; grid-template-columns: minmax(0, 1fr); }
.example-code { padding: 0.75rem 1rem; border-bottom: 1px solid var(--line); }
.example-code label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.25rem; }
.example-code textarea {
  display: block; width: 100%; min-height: 14rem; resize: vertical; padding: 0.75rem;
  font: 0.85rem/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--text); background: var(--code-bg); border: 1px solid var(--line); border-radius: 6px; tab-size: 2;
}
.example-actions { display: flex; gap: 0.5rem; margin-top: 0.5rem; }
.example-actions button {
  font: inherit; font-size: 0.9rem; padding: 0.3rem 0.9rem; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--bg); color: var(--link);
}
.example-actions button[data-action="run"] { background: var(--accent); color: var(--bg); }
/* How to run the example at home: the foot of its box, after the result, folded until asked for. */
.example-foot { padding: 0.5rem 1rem; background: var(--bg-alt); border-top: 1px solid var(--line); }
.example-local summary { cursor: pointer; font-size: 0.9rem; color: var(--muted); min-height: 24px; }
.example-local[open] summary { margin-bottom: 0.25rem; }
.example-local ol { margin: 0; padding-left: 1.5rem; font-size: 0.9rem; }
.example-local li { margin: 0.5rem 0 0.75rem; }
.example-local p { margin: 0.5rem 0; }
.example-local pre { margin: 0.5rem 0; max-height: 24rem; overflow: auto; background: var(--bg); }
.example-file button {
  font: inherit; font-size: 0.85rem; padding: 0.15rem 0.7rem; margin-left: 0.25rem; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--bg); color: var(--link);
}
.example-frame { display: block; width: 100%; border: 0; background: #ffffff; }
/* On a phone a demo that turns vertical takes the height its meta.json gives it (narrowHeight). */
@media (max-width: 640px) { .example-frame[data-narrow] { height: var(--frame-narrow) !important; } }
/* A demo takes the whole column, past the article's reading width. */
.example--showcase { clear: both; width: min(60rem, calc(100vw - 21rem)); }
@media (max-width: 48rem) { .example--showcase { width: auto; } }
.example--showcase .example-code { border-bottom: 0; border-top: 1px solid var(--line); }
.example--showcase .example-code summary { cursor: pointer; font-size: 0.9rem; color: var(--muted); }
.example--showcase .example-code[open] summary { margin-bottom: 0.5rem; }

.pager { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); clear: both; }
.bottom { border-top: 1px solid var(--line); padding: 1rem 1.5rem; color: var(--muted); font-size: 0.875rem; text-align: center; }