/* ==========================================================================
   Centrifuger documentation — theme
   Colour tokens are declared once on :root for the light theme and then
   overridden for dark mode, both for the explicit `data-theme="dark"` setting
   and for `auto` under a dark system preference.
   ========================================================================== */

:root {
  --accent:          #0f766e;
  --accent-strong:   #115e56;
  --accent-soft:     #d7f0ec;
  --accent-contrast: #ffffff;

  --bg:        #ffffff;
  --bg-subtle: #f6f8f8;
  --bg-sunken: #eef2f2;
  --bg-code:   #f4f7f7;

  --text:       #14201f;
  --text-muted: #5a6b6a;
  --text-faint: #7c8c8b;

  --border:        #dde5e4;
  --border-strong: #c4d1cf;

  --shadow-sm: 0 1px 2px rgba(16, 32, 30, .06);
  --shadow-md: 0 8px 28px rgba(16, 32, 30, .12);

  --sidebar-w: 17rem;
  --toc-w: 15rem;
  --header-h: 3.75rem;
  --content-max: 48rem;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas,
               "Liberation Mono", monospace;

  color-scheme: light;
}

:root[data-theme="dark"],
:root[data-theme="auto"] {
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] { color-scheme: dark; }
}

:root[data-theme="dark"] { color-scheme: dark; }

/* Dark palette, shared by the explicit and the automatic dark theme. */
:root[data-theme="dark"],
:root[data-theme="auto"] {
  --dark-accent:          #5eead4;
  --dark-accent-strong:   #99f6e4;
  --dark-accent-soft:     #123b38;
  --dark-accent-contrast: #05201d;
  --dark-bg:        #0d1414;
  --dark-bg-subtle: #121b1b;
  --dark-bg-sunken: #0a1010;
  --dark-bg-code:   #101a1a;
  --dark-text:       #e4ecea;
  --dark-text-muted: #9fb2af;
  --dark-text-faint: #7d908d;
  --dark-border:        #223030;
  --dark-border-strong: #2f4140;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --accent: var(--dark-accent);
    --accent-strong: var(--dark-accent-strong);
    --accent-soft: var(--dark-accent-soft);
    --accent-contrast: var(--dark-accent-contrast);
    --bg: var(--dark-bg);
    --bg-subtle: var(--dark-bg-subtle);
    --bg-sunken: var(--dark-bg-sunken);
    --bg-code: var(--dark-bg-code);
    --text: var(--dark-text);
    --text-muted: var(--dark-text-muted);
    --text-faint: var(--dark-text-faint);
    --border: var(--dark-border);
    --border-strong: var(--dark-border-strong);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, .55);
  }
}

:root[data-theme="dark"] {
  --accent: var(--dark-accent);
  --accent-strong: var(--dark-accent-strong);
  --accent-soft: var(--dark-accent-soft);
  --accent-contrast: var(--dark-accent-contrast);
  --bg: var(--dark-bg);
  --bg-subtle: var(--dark-bg-subtle);
  --bg-sunken: var(--dark-bg-sunken);
  --bg-code: var(--dark-bg-code);
  --text: var(--dark-text);
  --text-muted: var(--dark-text-muted);
  --text-faint: var(--dark-text-faint);
  --border: var(--dark-border);
  --border-strong: var(--dark-border-strong);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, .55);
}

/* -------------------------------------------------------------- reset -- */

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); text-underline-offset: 2px; }
a:hover { color: var(--accent-strong); }

img { max-width: 100%; height: auto; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: var(--accent-contrast);
  padding: .6rem 1rem; border-radius: 0 0 .4rem 0;
}
.skip:focus { left: 0; }

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

.site-header {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: .5rem;
  height: var(--header-h);
  padding: 0 1rem;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex; align-items: center;
  font-weight: 650; font-size: 1.05rem; letter-spacing: -.01em;
  color: var(--text); text-decoration: none;
}
.header-spacer { flex: 1; }

.site-header button, .site-header .gh {
  display: inline-flex; align-items: center; gap: .45rem;
  height: 2.2rem; padding: 0 .6rem;
  border: 1px solid var(--border); border-radius: .5rem;
  background: var(--bg-subtle); color: var(--text-muted);
  font: inherit; font-size: .875rem; cursor: pointer;
  text-decoration: none;
}
.site-header button:hover, .site-header .gh:hover {
  border-color: var(--border-strong); color: var(--text);
}
.site-header .gh { padding: 0 .55rem; }

.search-open { min-width: 13rem; justify-content: flex-start; }
.search-open .search-label { flex: 1; text-align: left; }
.search-open kbd {
  font-family: var(--font-sans); font-size: .7rem;
  border: 1px solid var(--border-strong); border-radius: .3rem;
  padding: .05rem .3rem; color: var(--text-faint);
}

.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] .theme-toggle .icon-sun { display: none; }
  :root[data-theme="auto"] .theme-toggle .icon-moon { display: block; }
}

.site-header .menu-toggle {
  display: none; flex-direction: column; justify-content: center;
  gap: 3px; width: 2.2rem;
}
.site-header .menu-toggle span { display: block; width: 15px; height: 1.6px; background: currentColor; }

/* ------------------------------------------------------------- layout -- */

.layout {
  display: flex;
  align-items: flex-start;
  max-width: 96rem;
  margin: 0 auto;
}

.sidebar {
  flex: none;
  width: var(--sidebar-w);
  position: sticky; top: var(--header-h);
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 1.75rem 1rem 3rem 1.25rem;
  border-right: 1px solid var(--border);
}

.content-col { flex: 1; min-width: 0; display: flex; flex-direction: column; }

main { padding: 2.25rem 2.5rem 1rem; }

.rightbar {
  flex: none; width: var(--toc-w);
  position: sticky; top: var(--header-h);
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 2.25rem 1.25rem 3rem 0;
}

body.home .sidebar, body.home .rightbar { display: none; }
body.home main { padding: 0; }

/* ------------------------------------------------------- sidebar nav -- */

.nav-group {
  margin: 1.5rem 0 .4rem; padding: 0 .6rem;
  font-size: .72rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--text-faint);
}
.nav-group:first-child { margin-top: 0; }
.sidebar-nav ul { list-style: none; margin: 0; padding: 0; }
.sidebar-nav a {
  display: block; padding: .32rem .6rem; border-radius: .4rem;
  color: var(--text-muted); text-decoration: none; font-size: .9rem;
}
.sidebar-nav a:hover { background: var(--bg-subtle); color: var(--text); }
.sidebar-nav a.active {
  background: var(--accent-soft); color: var(--accent-strong); font-weight: 600;
}
:root[data-theme="dark"] .sidebar-nav a.active { color: var(--accent); }

/* ------------------------------------------------------------- prose -- */

.prose { max-width: var(--content-max); }

.page-head { margin-bottom: 2rem; }
.eyebrow {
  margin: 0 0 .35rem; font-size: .75rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase; color: var(--accent);
}
.page-head h1 {
  margin: 0; font-size: clamp(1.9rem, 1.4rem + 1.6vw, 2.5rem);
  line-height: 1.15; letter-spacing: -.02em; font-weight: 700;
}
.lede { margin: .7rem 0 0; color: var(--text-muted); font-size: 1.075rem; }

.prose h2 {
  margin: 2.75rem 0 .85rem; padding-top: .4rem;
  font-size: 1.5rem; line-height: 1.25; letter-spacing: -.015em; font-weight: 680;
  border-top: 1px solid var(--border);
}
.prose h3 { margin: 2rem 0 .6rem; font-size: 1.175rem; font-weight: 650; }
.prose h4 { margin: 1.5rem 0 .4rem; font-size: 1rem; font-weight: 650; color: var(--text-muted); }

.anchor {
  margin-left: .4rem; color: var(--text-faint); text-decoration: none;
  opacity: 0; font-weight: 400;
}
h2:hover .anchor, h3:hover .anchor, h4:hover .anchor, .anchor:focus { opacity: 1; }

.prose p { margin: 0 0 1rem; }
.prose ul, .prose ol { margin: 0 0 1rem; padding-left: 1.3rem; }
.prose li { margin: .3rem 0; }
.prose li > ul, .prose li > ol { margin: .3rem 0; }

.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2.5rem 0; }

.prose blockquote {
  margin: 0 0 1rem; padding: .1rem 0 .1rem 1rem;
  border-left: 3px solid var(--border-strong); color: var(--text-muted);
}

:not(pre) > code {
  font-family: var(--font-mono); font-size: .855em;
  background: var(--bg-code); border: 1px solid var(--border);
  border-radius: .3rem; padding: .08em .32em;
  word-break: break-word;
}

/* --------------------------------------------------------- code block -- */

figure.code {
  margin: 0 0 1.25rem;
  border: 1px solid var(--border); border-radius: .6rem;
  background: var(--bg-code); overflow: hidden;
}
figure.code figcaption {
  display: flex; align-items: center; justify-content: space-between;
  padding: .3rem .4rem .3rem .8rem;
  background: var(--bg-subtle); border-bottom: 1px solid var(--border);
  font-size: .72rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--text-faint);
}
figure.code .copy {
  border: 1px solid transparent; border-radius: .35rem;
  background: transparent; color: var(--text-faint);
  font: inherit; font-size: .72rem; text-transform: uppercase; letter-spacing: .06em;
  padding: .15rem .45rem; cursor: pointer;
}
figure.code .copy:hover { border-color: var(--border-strong); color: var(--text); }
figure.code .copy.done { color: var(--accent); border-color: transparent; }
figure.code pre { margin: 0; padding: .9rem 1rem; overflow-x: auto; }
figure.code code {
  font-family: var(--font-mono); font-size: .82rem; line-height: 1.6;
  white-space: pre; color: var(--text);
}

/* -------------------------------------------------------------- table -- */

.table-wrap { overflow-x: auto; margin: 0 0 1.25rem; border: 1px solid var(--border); border-radius: .6rem; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
thead th {
  text-align: left; font-weight: 650; white-space: nowrap;
  background: var(--bg-subtle); color: var(--text);
  padding: .55rem .8rem; border-bottom: 1px solid var(--border);
}
tbody td { padding: .55rem .8rem; border-bottom: 1px solid var(--border); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr.group td {
  background: var(--bg-sunken); font-size: .78rem; letter-spacing: .05em;
  text-transform: uppercase; color: var(--text-muted);
}
tbody td code { white-space: nowrap; }

/* --------------------------------------------------------- admonition -- */

.admonition {
  margin: 0 0 1.25rem; padding: .9rem 1.1rem;
  border: 1px solid var(--border); border-left-width: 3px;
  border-radius: .5rem; background: var(--bg-subtle);
}
.admonition > :last-child { margin-bottom: 0; }
.admonition-title {
  margin: 0 0 .4rem !important; font-weight: 650; font-size: .9rem;
  display: flex; align-items: center; gap: .4rem;
}.admonition.note   { border-left-color: #3b82f6; }
.admonition.note   .admonition-title { color: #2563eb; }
.admonition.tip    { border-left-color: var(--accent); }
.admonition.tip    .admonition-title { color: var(--accent); }
.admonition.caution{ border-left-color: #d97706; }
.admonition.caution .admonition-title { color: #b45309; }
.admonition.danger { border-left-color: #dc2626; }
.admonition.danger .admonition-title { color: #b91c1c; }
:root[data-theme="dark"] .admonition.note .admonition-title { color: #7fb0ff; }
:root[data-theme="dark"] .admonition.caution .admonition-title { color: #f0b355; }
:root[data-theme="dark"] .admonition.danger .admonition-title { color: #ff8f8f; }
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] .admonition.note .admonition-title { color: #7fb0ff; }
  :root[data-theme="auto"] .admonition.caution .admonition-title { color: #f0b355; }
  :root[data-theme="auto"] .admonition.danger .admonition-title { color: #ff8f8f; }
}
/* ---------------------------------------------------------------- toc -- */

.toc-title {
  margin: 0 0 .5rem; font-size: .72rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase; color: var(--text-faint);
}
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--border); }
.toc a {
  display: block; padding: .22rem .75rem; margin-left: -1px;
  border-left: 1px solid transparent;
  color: var(--text-muted); text-decoration: none; font-size: .84rem; line-height: 1.4;
}
.toc li.lvl3 a { padding-left: 1.5rem; font-size: .81rem; }
.toc a:hover { color: var(--text); }
.toc a.active { color: var(--accent); border-left-color: var(--accent); font-weight: 550; }

/* -------------------------------------------------------------- pager -- */

.pager {
  display: flex; gap: 1rem; margin: 3rem 0 1rem;
  border-top: 1px solid var(--border); padding-top: 1.5rem;
}
.pager a {
  flex: 1; display: flex; flex-direction: column; gap: .15rem;
  padding: .75rem 1rem; border: 1px solid var(--border); border-radius: .6rem;
  text-decoration: none; color: var(--text); font-weight: 600; font-size: .95rem;
}
.pager a:hover { border-color: var(--accent); background: var(--bg-subtle); }
.pager a span { font-size: .75rem; font-weight: 500; color: var(--text-faint); text-transform: uppercase; letter-spacing: .06em; }
.pager .next { text-align: right; align-items: flex-end; }
.pager > span { flex: 1; }

.edit-link { display: inline-block; font-size: .875rem; color: var(--text-muted); }

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

.site-footer {
  margin-top: auto;
  padding: 2rem 2.5rem 3rem;
  border-top: 1px solid var(--border);
  color: var(--text-faint); font-size: .85rem;
}
.site-footer p { margin: .25rem 0; }

/* --------------------------------------------------------------- home -- */

.hero {
  padding: 4.5rem 2rem 3.5rem;
  background:
    radial-gradient(60rem 26rem at 50% -10%, var(--accent-soft), transparent 70%);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.hero-inner { max-width: 52rem; margin: 0 auto; }
.hero .badge {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .25rem .7rem; margin-bottom: 1.1rem;
  border: 1px solid var(--border-strong); border-radius: 999px;
  background: var(--bg); font-size: .8rem; color: var(--text-muted);
}
.hero .badge strong { color: var(--accent); font-weight: 650; }
.hero h1 {
  margin: 0; font-size: clamp(2.2rem, 1.4rem + 3.2vw, 3.6rem);
  line-height: 1.08; letter-spacing: -.03em; font-weight: 750;
}
.hero p.tagline {
  margin: 1.1rem auto 0; max-width: 40rem;
  font-size: clamp(1.02rem, .95rem + .35vw, 1.2rem); color: var(--text-muted);
}
.cta { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center; margin-top: 2rem; }
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .65rem 1.3rem; border-radius: .55rem;
  font-weight: 600; font-size: .95rem; text-decoration: none;
  border: 1px solid transparent;
}
.btn.primary { background: var(--accent); color: var(--accent-contrast); }
.btn.primary:hover { background: var(--accent-strong); color: var(--accent-contrast); }
.btn.ghost { border-color: var(--border-strong); color: var(--text); background: var(--bg); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

.home-section { max-width: 62rem; margin: 0 auto; padding: 3.5rem 2rem; }
.home-section > h2 {
  margin: 0 0 .6rem; font-size: 1.75rem; letter-spacing: -.02em; font-weight: 700;
}
.home-section > p.section-lede { margin: 0 0 2rem; color: var(--text-muted); max-width: 46rem; }

.home-section > p { max-width: 46rem; }
.home-section > ul, .home-section > ol { max-width: 46rem; }
.home-section > figure.code, .home-section > .table-wrap { max-width: 52rem; }

.cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.card {
  padding: 1.25rem 1.35rem; border: 1px solid var(--border);
  border-radius: .75rem; background: var(--bg-subtle);
}
.card h3 { margin: 0 0 .4rem; font-size: 1.02rem; font-weight: 650; }
.card p { margin: 0; color: var(--text-muted); font-size: .92rem; }
.card a { font-weight: 600; }

.stats { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); margin-top: 2rem; }
.stat {
  padding: 1.15rem 1.25rem; border: 1px solid var(--border);
  border-radius: .75rem; background: var(--bg);
}
.stat .value { font-size: 1.6rem; font-weight: 700; letter-spacing: -.02em; color: var(--accent); }
.stat .label { font-size: .85rem; color: var(--text-muted); margin-top: .2rem; }

.quickstart { background: var(--bg-subtle); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.quickstart .home-section { padding-top: 3rem; padding-bottom: 3rem; }
.quickstart figure.code { background: var(--bg); }

.citation {
  border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: .6rem; background: var(--bg-subtle);
  padding: 1.1rem 1.3rem;
}
.citation p { margin: 0 0 .5rem; }
.citation p:last-child { margin-bottom: 0; }
.award {
  display: inline-block; margin-top: .3rem; padding: .15rem .55rem;
  border-radius: 999px; background: var(--accent-soft); color: var(--accent-strong);
  font-size: .78rem; font-weight: 650;
}
:root[data-theme="dark"] .award { color: var(--accent); }

/* ------------------------------------------------------------- search -- */

.search-modal {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(10, 20, 19, .45);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 6rem 1rem 2rem;
}
.search-modal[hidden] { display: none; }
.search-panel {
  width: min(40rem, 100%); max-height: 70vh; display: flex; flex-direction: column;
  background: var(--bg); border: 1px solid var(--border-strong);
  border-radius: .8rem; box-shadow: var(--shadow-md); overflow: hidden;
}
.search-input {
  border: 0; border-bottom: 1px solid var(--border);
  padding: 1rem 1.15rem; font: inherit; font-size: 1rem;
  background: transparent; color: var(--text); outline: none;
}
.search-results { list-style: none; margin: 0; padding: .4rem; overflow-y: auto; flex: 1; }
.search-results li a {
  display: block; padding: .55rem .75rem; border-radius: .45rem;
  text-decoration: none; color: var(--text);
}
.search-results li a:hover, .search-results li.sel a { background: var(--accent-soft); }
:root[data-theme="dark"] .search-results li a:hover,
:root[data-theme="dark"] .search-results li.sel a { background: var(--accent-soft); }
.search-results .r-group { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); }
.search-results .r-title { font-weight: 600; display: block; }
.search-results .r-snippet { font-size: .84rem; color: var(--text-muted); display: block; }
.search-results .empty { padding: 1.2rem; color: var(--text-muted); text-align: center; font-size: .9rem; }
.search-hint { margin: 0; padding: .5rem .9rem; border-top: 1px solid var(--border);
  font-size: .75rem; color: var(--text-faint); }

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

@media (max-width: 1200px) {
  .rightbar { display: none; }
}

@media (max-width: 900px) {
  .site-header .menu-toggle { display: flex; }
  .search-open { min-width: 0; }
  .search-open .search-label, .search-open kbd { display: none; }
  .sidebar {
    position: fixed; top: var(--header-h); left: 0; bottom: 0;
    width: min(20rem, 82vw); z-index: 45;
    background: var(--bg); max-height: none;
    transform: translateX(-102%); transition: transform .18s ease;
    box-shadow: var(--shadow-md);
  }
  body.nav-open .sidebar { transform: translateX(0); }
  body.nav-open::after {
    content: ""; position: fixed; inset: var(--header-h) 0 0 0;
    background: rgba(10, 20, 19, .4); z-index: 44;
  }
  main { padding: 1.75rem 1.25rem 1rem; }
  .site-footer { padding: 1.75rem 1.25rem 2.5rem; }
  .home-section, .hero { padding-left: 1.25rem; padding-right: 1.25rem; }
  .pager { flex-direction: column; }
  .pager > span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar { transition: none; }
}

/* The home page hides the sidebar on wide screens, but the off-canvas drawer
   is still the only navigation available on a phone, so bring it back. */
@media (max-width: 900px) {
  body.home .sidebar { display: block; }
}

@media print {
  .site-header, .sidebar, .rightbar, .pager, .search-modal, .edit-link { display: none !important; }
  main { padding: 0; }
}