/* Separatrix website layout. Loaded after the vendored tokens.css and components.css,
   which it never restyles. Tokens only: no literal colours, type from the type-style
   classes, spacing from space-*, radii by role, shadows only on floating things. */

/* The theme is on <body data-theme>, so set color-scheme (scrollbars, form controls) from
   the matching attribute on <html>. components.css's html[data-theme="light"] projector
   scale is deliberately not triggered on the website. */
html[data-site-theme="light"] { color-scheme: light; }
html[data-site-theme="dark"] { color-scheme: dark; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
/* In-page links land below the sticky header. src/site.js sets --site-header-h to the
   header's measured height; without the script, the fallback is its height on one row, or
   on two rows at phone width, where the nav wraps under the name. */
html {
  --site-header-fallback: var(--topbar-h);
  scroll-padding-top: calc(var(--site-header-h, var(--site-header-fallback)) + var(--space-4));
}
@media (max-width: 39.99rem) {
  html { --site-header-fallback: calc(var(--topbar-h) + var(--control-h) + var(--space-2) * 2); }
}

/* components.css gives everything the 2px focus ring. <main>, the skip link's target,
   spans the page, so its ring sits just inside it, where the window's edges can't cut it off. */
.ds-root main:focus-visible { outline-offset: -2px; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
body > main, body > .site-docs { flex: 1 0 auto; }
img, video { max-width: 100%; height: auto; }
p, h1, h2, h3, h4, figure, ul, ol { margin: 0; }
[hidden] { display: none !important; }

/* Links: accent-coloured text, always underlined in running text so colour is not the
   only cue. */
.ds-root a:not(.ds-button) { color: var(--accent-ink); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
.ds-root a:not(.ds-button):hover { text-decoration-thickness: 2px; }

.site-container {
  width: 100%;
  max-width: 76rem;
  margin: 0 auto;
  padding: 0 var(--space-4);
}
@media (min-width: 48rem) {
  .site-container { padding: 0 var(--space-8); }
}

/* ---- Skip link ---------------------------------------------------------------- */
.ds-root .site-skip {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 100;
  /* Far enough up that its shadow is off screen too. */
  transform: translateY(calc(-100% - var(--space-10) - var(--space-10)));
  box-shadow: var(--shadow-pop);
}
.ds-root .site-skip:focus { transform: none; }

/* ---- Header ------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.site-header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  min-height: var(--topbar-h);
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}
.ds-root a.site-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--ink);
  text-decoration: none;
  border-radius: var(--radius-sm);
}
.site-logo { color: var(--accent); }
.site-brand .site-logo { width: calc(var(--icon) * 1.25); height: calc(var(--icon) * 1.25); }
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  order: 3;
  width: 100%;
}
.ds-root a.site-nav-link {
  display: inline-flex;
  align-items: center;
  height: var(--control-h);
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--ink-2);
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.ds-root a.site-nav-link:hover { background: var(--hover); color: var(--ink); }
.ds-root a.site-nav-link[aria-current="page"] { background: var(--active); color: var(--ink); }
.site-theme { margin-left: auto; }
@media (min-width: 40rem) {
  .site-nav { order: 0; width: auto; margin-left: var(--space-4); }
  .site-header-inner { flex-wrap: nowrap; padding-top: 0; padding-bottom: 0; }
}

/* ---- Footer ------------------------------------------------------------------- */
.site-footer {
  margin-top: var(--space-10);
  border-top: 1px solid var(--line);
  background: var(--ground);
  color: var(--ink-2);
}
.site-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-6);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}
.site-footer-brand { display: inline-flex; align-items: center; gap: var(--space-2); color: var(--ink); }

/* ---- Home: hero --------------------------------------------------------------- */
.site-hero {
  display: grid;
  gap: var(--space-8);
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
/* The download block leads: beside the name on wide screens, right under it on narrow
   ones. The video follows below. */
@media (min-width: 64rem) {
  .site-hero { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); align-items: start; padding-top: var(--space-10); }
  .site-hero-text { padding-top: var(--space-5); }
  .site-hero > .site-video { grid-column: 1 / -1; }
}
.site-hero-text { display: flex; flex-direction: column; gap: var(--space-3); min-width: 0; }
.site-hero-name { display: flex; align-items: center; gap: var(--space-3); color: var(--ink); text-wrap: balance; }
.site-hero-name .site-hero-logo { width: 2.25rem; height: 2.25rem; }
.site-hero-lede { color: var(--ink); text-wrap: pretty; }
.site-hero-who { color: var(--ink-2); }
.site-hero-dl { min-width: 0; }

.site-video { display: flex; flex-direction: column; gap: var(--space-2); min-width: 0; max-width: 56rem; }
.site-video video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--plot-bg);
}
.site-video figcaption { color: var(--ink-2); }

/* ---- Download block ------------------------------------------------------------ */
.site-dl {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--raised);
}
.site-dl-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: var(--space-1) var(--space-3); }
.site-dl-free { color: var(--ink-2); }
.site-dl-primary { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2) var(--space-3); }
.site-dl-status { color: var(--ink-2); }
.site-dl-groups {
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
}
@media (min-width: 40rem) {
  .site-dl-groups:not(.site-dl-groups--one) { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.site-dl-os { display: flex; flex-direction: column; gap: var(--space-2); min-width: 0; }
.site-dl-os > h3, .site-dl-os > h4 { color: var(--ink); }
.site-dl-needs { color: var(--ink-2); margin-top: calc(var(--space-1) * -1); }
.site-dl-list { display: flex; flex-direction: column; gap: var(--space-3); padding: 0; list-style: none; }
.site-dl-groups--one .site-dl-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 14rem), 1fr)); }
.site-dl-item { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 var(--space-2); }
.site-dl-size { color: var(--ink-2); }
.site-dl-note { flex-basis: 100%; color: var(--ink-2); }
.site-dl-guide { margin-top: var(--space-1); }
.site-dl-foot { color: var(--ink-2); }
.site-dl-notice:empty { display: none; }
.site-dl .ds-diagnostic-actions .ds-button { text-decoration: none; }
.site-prose .site-dl { margin: var(--space-6) 0 var(--space-8); }
/* Inside a docs page the block keeps its own spacing, not the prose rhythm. */
.site-prose .site-dl :is(h2, h3, h4, p, ul, li) { margin: 0; }
.site-prose .site-dl ul { padding-left: 0; }

/* ---- Home: sections ---------------------------------------------------------- */
.site-section { padding-top: var(--space-10); display: flex; flex-direction: column; gap: var(--space-3); }
.site-section > h2 { color: var(--ink); text-wrap: balance; }
.site-section-lede { color: var(--ink-2); max-width: 72ch; }
.site-section-more { margin-top: var(--space-3); }

.site-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr));
  gap: var(--space-6);
  margin-top: var(--space-3);
  padding: 0;
  list-style: none;
}
.site-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--raised);
  transition: border-color var(--dur-fast) var(--ease);
}
.site-card:hover { border-color: var(--edge); }
.ds-root a.site-card-shot { display: block; border-bottom: 1px solid var(--line); background: var(--plot-bg); }
.site-card-shot img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.site-card-body { display: flex; flex-direction: column; gap: var(--space-2); flex: 1 1 auto; padding: var(--space-3) var(--space-4) var(--space-4); }
.ds-root a.site-card-title { color: var(--ink); text-decoration: none; }
.ds-root a.site-card-title:hover { text-decoration: underline; }
.site-card-text { color: var(--ink-2); }
.site-card-example { color: var(--ink-2); }
.site-card-links { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-4); margin-top: auto; padding-top: var(--space-1); }

.site-gallery-note { color: var(--ink-2); max-width: 72ch; }

.site-why {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 18rem), 1fr));
  gap: var(--space-6) var(--space-8);
  margin-top: var(--space-3);
  padding: 0;
  list-style: none;
}
.site-why > li { display: flex; flex-direction: column; gap: var(--space-1); padding-top: var(--space-3); border-top: 1px solid var(--line); }
.site-why h3 { color: var(--ink); }
.site-why p { color: var(--ink-2); }
.site-math { font-family: var(--font-math); font-style: italic; }

/* ---- Tables (home and docs) -------------------------------------------------- */
.site-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-md); }
.site-table { width: 100%; border-collapse: collapse; }
.site-table th, .site-table td { padding: var(--space-2) var(--space-3); text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.site-table th { color: var(--ink-2); background: var(--ground); white-space: nowrap; }
.site-table tr:last-child td { border-bottom: 0; }
.site-table .site-num { text-align: right; white-space: nowrap; }

/* ---- Docs layout ------------------------------------------------------------- */
.site-docs {
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-6);
}
@media (min-width: 56rem) {
  .site-docs { grid-template-columns: 14rem minmax(0, 1fr); gap: var(--space-10); padding-top: var(--space-8); }
}
.site-main { min-width: 0; }

.site-side { min-width: 0; }
.site-side-toggle { display: none; }
.site-side-body { display: flex; flex-direction: column; gap: var(--space-4); }
.site-side-group { display: flex; flex-direction: column; gap: var(--space-1); }
.site-side-title { color: var(--ink-2); padding: 0 var(--space-2); }
.site-side-list { display: flex; flex-direction: column; gap: 0; padding: 0; list-style: none; }
.ds-root a.site-side-link {
  display: block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--ink-2);
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.ds-root a.site-side-link:hover { background: var(--hover); color: var(--ink); }
.ds-root a.site-side-link[aria-current="page"] { background: var(--accent-soft); color: var(--ink); font-weight: 600; }

@media (min-width: 56rem) {
  .site-side-body {
    position: sticky;
    top: calc(var(--topbar-h) + var(--space-6));
    max-height: calc(100vh - var(--topbar-h) - var(--space-10));
    overflow-y: auto;
    padding-bottom: var(--space-4);
  }
}
/* Small screens: with the script, the page list folds behind a "Pages" button. */
@media (max-width: 55.99rem) {
  .site-side.is-collapsible .site-side-toggle { display: inline-flex; }
  .site-side.is-collapsible .site-side-toggle .ds-icon { transition: transform var(--dur) var(--ease); }
  .site-side.is-collapsible.is-open .site-side-toggle .ds-icon { transform: rotate(180deg); }
  .site-side.is-collapsible:not(.is-open) .site-side-body { display: none; }
  .site-side.is-collapsible.is-open .site-side-body { padding: var(--space-3) 0 var(--space-2); }
  .site-side { border-bottom: 1px solid var(--line); padding-bottom: var(--space-2); }
}

/* ---- Prose (rendered docs) ---------------------------------------------------- */
.site-prose { max-width: 46rem; color: var(--ink); }
.site-prose > * + * { margin-top: var(--space-3); }
.site-prose h1 { text-wrap: balance; margin-bottom: var(--space-2); }
.site-prose h2 { margin-top: var(--space-10); text-wrap: balance; }
.site-prose h3 { margin-top: var(--space-6); text-wrap: balance; }
.site-prose h4 { margin-top: var(--space-4); }
.site-prose h2 + *, .site-prose h3 + *, .site-prose h4 + * { margin-top: var(--space-2); }
.site-prose ul, .site-prose ol { padding-left: var(--space-6); }
.site-prose li + li { margin-top: var(--space-1); }
.site-prose li > p + p, .site-prose li > p + .site-code, .site-prose li > .site-code + p { margin-top: var(--space-2); }
.site-prose li > .site-code { margin-top: var(--space-2); }
.site-prose strong { font-weight: 600; }
.site-prose img {
  display: block;
  margin: var(--space-2) 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.site-prose p > img:only-child { margin: 0; }
.site-prose .site-table-wrap { margin-top: var(--space-4); margin-bottom: var(--space-2); }

.ds-root :not(pre) > code.code {
  padding: 0 var(--space-1);
  border-radius: var(--radius-xs);
  background: var(--hover);
  overflow-wrap: anywhere;
}
.site-code pre {
  margin: 0;
  padding: var(--space-3);
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--sunken);
  color: var(--ink);
}
.site-code pre code { font: inherit; }
/* With a Copy button, the box holds the code and the button side by side. Only the code
   scrolls, so a long line never runs under the button. */
.site-code.has-copy {
  display: flex;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--sunken);
}
.site-code.has-copy pre { flex: 1 1 auto; min-width: 0; border: 0; border-radius: var(--radius-sm); }
.ds-root .site-copy { flex: none; margin: var(--space-1); }

.site-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  max-width: 46rem;
  margin-top: var(--space-10);
}
.ds-root a.site-pager-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--ink);
  text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.ds-root a.site-pager-link:hover { border-color: var(--edge); background: var(--hover); }
.site-pager-link .caption { color: var(--ink-2); }
.site-pager-link--next { text-align: right; }
.site-source { margin-top: var(--space-6); color: var(--ink-2); max-width: 46rem; }