/* Shared presentation for the shdr guides, examples and reference pages. */
:root {
  color-scheme: light dark;
  --bg: #fafbf8;
  --surface: #ffffff;
  --fg: #1c2d29;
  --muted: #52635c;
  --border: #d8e1da;
  --accent: #09654b;
  --accent-soft: #e6f2eb;
  --code: #edf2ee;
  --focus: #a14505;
}
/* Respect the reader's chosen appearance without hiding the content. */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111c19;
    --surface: #182622;
    --fg: #e4eee8;
    --muted: #aabeb2;
    --border: #354a40;
    --accent: #80d9b4;
    --accent-soft: #203d31;
    --code: #1b2d25;
    --focus: #ffc488;
  }
}
/* Give layouts predictable dimensions and keep anchored headings visible. */
* { box-sizing: border-box; }
html { scroll-padding-top: 1.5rem; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 1rem/1.7 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: var(--accent); text-underline-offset: .18em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: .14em; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
button, input, select { font: inherit; }
button, summary { cursor: pointer; }
img, svg { max-width: 100%; height: auto; }
/* A visible keyboard shortcut skips repeated navigation. */
.skip-link { position: absolute; top: -5rem; left: 1rem; z-index: 10; padding: .7rem 1rem; color: var(--fg); background: var(--surface); border: 2px solid var(--accent); }
.skip-link:focus { top: .5rem; }
.site-header { border-bottom: 1px solid var(--border); background: var(--surface); }
.header-inner { max-width: 1240px; margin: auto; padding: 1rem 2rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .8rem 2rem; }
.brand { color: var(--fg); text-decoration: none; font-size: 1.5rem; font-weight: 800; letter-spacing: -.05em; }
.brand span { margin-left: .6rem; color: var(--muted); font-size: .8rem; font-weight: 450; letter-spacing: 0; }
.brand .release-version { color: var(--accent); font-size: .85rem; font-weight: 700; }
.site-nav { display: flex; flex-wrap: wrap; gap: .25rem .4rem; margin: 0; }
.site-nav a { padding: .35rem .65rem; text-decoration: none; border-radius: .35rem; font-size: .92rem; font-weight: 600; }
.site-nav a[aria-current="page"], .site-nav a:hover { color: var(--fg); background: var(--accent-soft); }
/* Guides keep a readable line length while tables can use the wider shell. */
.page-shell { max-width: 1240px; margin: auto; padding: 3rem 2rem 5rem; }
main.page-main { max-width: 1050px; margin: 0 auto; padding: 0; min-width: 0; }
.guide-layout { display: grid; grid-template-columns: minmax(0, 1fr) 15rem; gap: 3.5rem; }
.guide-layout .page-main { width: 100%; }
.page-main > p, .page-main > ul, .page-main > ol { max-width: 78ch; }
h1, h2, h3, h4 { line-height: 1.22; letter-spacing: -.025em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); margin: 0 0 1.2rem; }
h2 { font-size: 1.75rem; margin: 3rem 0 1rem; }
h3 { font-size: 1.2rem; margin: 2rem 0 .7rem; }
h4 { font-size: 1.05rem; }
p { margin: 1rem 0; }
li { margin: .4rem 0; }
li > p { margin: .4rem 0; }
strong { font-weight: 700; }
.eyebrow { color: var(--accent); font-size: .8rem; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; margin: 0 0 .8rem; }
.lead { color: var(--muted); font-size: 1.2rem; line-height: 1.65; max-width: 65ch; }
.muted, .metadata, figcaption { color: var(--muted); font-size: .9rem; }
.callout, blockquote { margin: 1.5rem 0; padding: .5rem 1.3rem; border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 .5rem .5rem 0; }
.callout p:first-child, blockquote p:first-child { margin-top: .5rem; }
.callout p:last-child, blockquote p:last-child { margin-bottom: .5rem; }
.toc { font-size: .9rem; align-self: start; position: sticky; top: 1.5rem; padding-left: 1.2rem; border-left: 1px solid var(--border); }
.toc p { font-weight: 700; margin: 0 0 .6rem; }
.toc ul { padding: 0; list-style: none; }
.toc li { margin: .55rem 0; line-height: 1.4; }
.toc a { text-decoration: none; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: .7rem; padding: 1.25rem; }
.card h2, .card h3 { margin: 0 0 .6rem; font-size: 1.15rem; }
.card p { margin: .5rem 0; }
.button-link { display: inline-block; border: 1px solid var(--accent); border-radius: .4rem; padding: .55rem 1rem; font-weight: 650; text-decoration: none; }
.button-link.primary { background: var(--accent); color: var(--bg); }
.actions { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1.5rem 0; }
/* Code stays exact and scrolls horizontally rather than forcing a narrow page wider. */
code, kbd { font: .9em/1.65 ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace; }
:not(pre) > code { background: var(--code); padding: .12rem .3rem; border-radius: .25rem; overflow-wrap: anywhere; }
pre { max-width: 100%; overflow: auto; background: var(--code); border: 1px solid var(--border); border-radius: .5rem; padding: 1.15rem; font-size: .86rem; line-height: 1.65; tab-size: 4; }
pre code { font-size: inherit; white-space: pre; }
.code-caption { margin: 1.5rem 0 -.3rem; font-size: .86rem; font-weight: 650; color: var(--muted); }
.table-wrap { max-width: 100%; overflow: auto; margin: 1.5rem 0; border: 1px solid var(--border); border-radius: .5rem; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; font-variant-numeric: tabular-nums; }
th, td { padding: .75rem .85rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
th { background: var(--accent-soft); font-weight: 700; }
tbody tr:last-child td { border-bottom: 0; }
caption { text-align: left; font-weight: 650; padding: .75rem; }
details { margin: 1rem 0; padding: .7rem 1rem; border: 1px solid var(--border); border-radius: .5rem; background: var(--surface); }
summary { font-weight: 650; }
details[open] > summary { margin-bottom: .8rem; }
label { display: block; font-weight: 650; margin: 1rem 0 .35rem; }
input[type="search"] { width: 100%; border: 1px solid var(--border); border-radius: .4rem; padding: .7rem .85rem; color: var(--fg); background: var(--surface); }
.hidden, [hidden] { display: none !important; }
.entry { border-top: 1px solid var(--border); margin-top: 1rem; padding: .5rem 0 1rem; }
.entry p { margin: .7rem 0; }
.section-nav { display: flex; flex-wrap: wrap; gap: .5rem 1rem; margin: 1.5rem 0; }
.source { font-size: .85rem; }
.source-view { max-width: none; }
.source-view pre { padding: 1rem 0; }
.source-code code { white-space: pre; }
.line { display: inline-block; min-width: 100%; min-height: 1.65em; padding-right: 1.5rem; }
.line:target { background: var(--accent-soft); outline: 1px solid var(--accent); }
.line-number { display: inline-block; width: 5.8em; margin-right: 1.2em; padding-right: .7em; text-align: right; color: var(--muted); border-right: 1px solid var(--border); text-decoration: none; user-select: none; }
.file-list { columns: 2 21rem; padding-left: 1.3rem; }
.file-list li { break-inside: avoid; }
.footer { border-top: 1px solid var(--border); padding: 1.5rem 2rem; color: var(--muted); font-size: .85rem; }
.footer p { max-width: 1176px; margin: auto; }
/* Stack the guide navigation beneath the article on a narrow screen. */
@media (max-width: 900px) {
  .guide-layout { display: flex; flex-direction: column-reverse; gap: 2rem; }
  .toc { position: static; width: 100%; }
  .toc ul { display: flex; flex-wrap: wrap; gap: .4rem 1rem; margin: 0; }
  .toc li { margin: 0; }
}
@media (max-width: 600px) {
  .header-inner { padding: .9rem 1rem; }
  .brand span { display: none; }
  .brand .release-version { display: inline; }
  .page-shell { padding: 2rem 1rem 3rem; }
  .site-nav { gap: .1rem; }
  .site-nav a { padding: .3rem .45rem; font-size: .85rem; }
  th, td { padding: .6rem; }
  pre { font-size: .8rem; }
  .line-number { width: 4.5em; margin-right: .6em; }
}
/* Printed guides retain source and table content without navigation clutter. */
@media print {
  :root { color-scheme: light; --bg: white; --surface: white; --fg: black; --muted: #333; --border: #aaa; --accent: #064e3b; --accent-soft: #f2f2f2; --code: #f5f5f5; }
  .site-header, .toc, .skip-link, .actions, .footer { display: none; }
  .page-shell { padding: 0; }
  .guide-layout { display: block; }
  pre { white-space: pre-wrap; overflow: visible; }
  pre code { white-space: pre-wrap; }
  .table-wrap { overflow: visible; }
  h2, h3, summary { break-after: avoid; }
}