:root {
  color-scheme: light dark;

  --color-background: hsl(0, 20%, 99%);
  --color-background-weak: hsl(0, 8%, 97%);
  --color-background-weak-hover: hsl(0, 8%, 94%);
  --color-background-strong: hsl(0, 5%, 12%);
  --color-background-interactive: #f0603c;
  --color-background-interactive-weak: hsl(10, 86%, 96%);

  --color-text: hsl(0, 1%, 39%);
  --color-text-weak: hsl(0, 1%, 60%);
  --color-text-weaker: hsl(0, 3%, 55%);
  --color-text-strong: hsl(0, 5%, 12%);
  --color-text-inverted: hsl(0, 20%, 99%);

  --color-border: hsl(30, 2%, 81%);
  --color-border-weak: hsl(0, 1%, 85%);
  --color-code-bg: hsl(0, 8%, 97%);

  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:
    'JetBrains Mono', ui-monospace, 'SFMono-Regular', 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;

  --sidebar-width: 17rem;
  --content-width: 64rem;
  --toc-width: 15rem;
  --nav-height: 5rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: hsl(0, 9%, 7%);
    --color-background-weak: hsl(0, 6%, 10%);
    --color-background-weak-hover: hsl(0, 5%, 15%);
    --color-background-strong: hsl(0, 15%, 94%);
    --color-background-interactive-weak: hsl(10, 50%, 12%);

    --color-text: hsl(0, 4%, 71%);
    --color-text-weak: hsl(0, 2%, 49%);
    --color-text-weaker: hsl(0, 3%, 58%);
    --color-text-strong: hsl(0, 15%, 94%);
    --color-text-inverted: hsl(0, 9%, 7%);

    --color-border: hsl(0, 3%, 28%);
    --color-border-weak: hsl(0, 4%, 23%);
    --color-code-bg: hsl(0, 6%, 10%);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  background: var(--color-background-interactive);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.page {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(12rem, var(--sidebar-width)) auto;
  gap: 2.5rem;
  align-items: center;
  justify-content: space-between;
  min-height: var(--nav-height);
  padding: 1rem 1.5rem;
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border-weak);
}

.site-title {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  line-height: 1;
}

.site-title img {
  display: block;
  width: min(100%, 270px);
  height: auto;
}

.site-header__version {
  margin: 0;
  color: var(--color-text-weak);
  font-size: 0.9rem;
}

.site-header__version {
  font-family: var(--font-mono);
}

.main-frame {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--toc-width);
  min-height: calc(100vh - var(--nav-height));
}

@media (min-width: 72rem) {
  .main-frame {
    grid-template-columns:
      var(--sidebar-width)
      minmax(0, min(var(--content-width), calc(100vw - var(--sidebar-width) - var(--toc-width))))
      minmax(var(--toc-width), 1fr);
  }
}

.sidebar-pane {
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  border-inline-end: 1px solid var(--color-border-weak);
}

.sidebar {
  padding: 1.5rem 0;
}

.right-sidebar-panel {
  position: sticky;
  top: var(--nav-height);
  max-height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  padding: 1.5rem 0;
}

.sidebar ul,
.toc ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sidebar a,
.toc a,
.doc-footer a {
  color: var(--color-text-weaker);
  text-decoration: none;
}

.sidebar a {
  display: block;
  width: 100%;
  padding: 0.25rem 1.5rem;
  border-left: 2px solid transparent;
  font-size: 0.95rem;
  user-select: none;
}

.sidebar a:hover,
.toc a:hover,
.doc-footer a:hover {
  color: var(--color-text-strong);
  background: var(--color-background-weak);
}

.sidebar a.active,
.sidebar a[aria-current='page'] {
  border-left-color: var(--color-background-interactive);
  background: var(--color-background-weak);
  color: var(--color-text-strong);
  font-weight: 600;
}

.nav-group {
  margin-top: 1.25rem;
}

.nav-group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.25rem 1.5rem;
  cursor: pointer;
  color: var(--color-text-strong);
  font-weight: 600;
  list-style: none;
  user-select: none;
}

.nav-group summary::-webkit-details-marker {
  display: none;
}

.nav-group summary::after {
  content: '⌄';
  color: var(--color-text-weak);
  font-size: 0.9rem;
}

.nav-group details:not([open]) summary::after {
  content: '›';
}

.nav-group summary:hover {
  background: var(--color-background-weak);
}

.nav-group ul a {
  padding-left: 2.25rem;
}

.content-panel {
  min-width: 0;
  max-width: var(--content-width);
  padding: 2rem 3rem 4rem;
}

.content-panel > :first-child {
  margin-top: 0;
}

.content-panel h1,
.content-panel h2,
.content-panel h3,
.content-panel h4 {
  color: var(--color-text-strong);
  font-weight: 500;
  line-height: 1.25;
}

.content-panel h1 {
  margin: 0 0 1rem;
  font-size: 1.85rem;
}

.content-panel h2 {
  margin: 2.2rem 0 0.85rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--color-border-weak);
  font-size: 1.55rem;
}

.content-panel h3 {
  margin: 1.7rem 0 0.7rem;
  font-size: 1.25rem;
}

.content-panel h4 {
  margin: 1.4rem 0 0.5rem;
  font-size: 1.05rem;
}

.content-panel p,
.content-panel li {
  color: var(--color-text);
}

.content-panel a {
  color: var(--color-text-strong);
  text-decoration: underline;
  text-decoration-color: var(--color-background-interactive);
  text-underline-offset: 0.2em;
}

.content-panel a:hover {
  color: var(--color-background-interactive);
}

.content-panel strong {
  color: var(--color-text-strong);
  font-weight: 500;
}

.content-panel ul,
.content-panel ol {
  padding-left: 1.1rem;
}

.content-panel li {
  margin: 0.3rem 0;
}

.content-panel li::marker {
  color: var(--color-background-interactive);
}

.content-panel img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--color-border-weak);
  border-radius: 6px;
}

.content-panel code {
  padding: 0.1rem 0.28rem;
  border: 1px solid var(--color-border-weak);
  border-radius: 4px;
  background: var(--color-code-bg);
  color: var(--color-text-strong);
  font-family: var(--font-mono);
  font-size: 0.88em;
}

.content-panel pre {
  overflow-x: auto;
  margin: 0.75rem 0 2.4rem;
  padding: 1rem;
  border: 1px solid var(--color-border-weak);
  border-radius: 6px;
  background: var(--color-code-bg);
}

.content-panel pre code {
  padding: 0;
  border: 0;
  background: transparent;
}

.content-panel table {
  display: block;
  width: 100%;
  margin: 1.25rem 0 2rem;
  overflow-x: auto;
  border-collapse: collapse;
}

.content-panel th,
.content-panel td {
  padding: 0.5rem 0.75rem 0.5rem 0;
  border-bottom: 1px solid var(--color-border-weak);
  text-align: left;
  vertical-align: top;
}

.content-panel th {
  color: var(--color-text-strong);
  font-weight: 500;
}

.content-panel td:first-child {
  white-space: nowrap;
}

.right-sidebar {
  border-inline-start: 0;
}

.right-sidebar-panel {
  padding: 1.5rem 0;
}

@media (min-width: 72rem) {
  .right-sidebar-panel {
    width: var(--toc-width);
  }
}

.right-sidebar-panel h2 {
  margin: 0;
  padding: 0 1.5rem 0.75rem;
  color: var(--color-text-strong);
  font-size: 0.95rem;
  font-weight: 400;
}

.toc a {
  display: block;
  width: 100%;
  padding: 0.25rem 1.5rem;
  color: var(--color-text-weaker);
  font-size: 0.92rem;
  user-select: none;
}

.toc__level-3 a {
  padding-left: 2.25rem;
}

.toc__empty {
  margin: 0;
  padding: 0 1.5rem;
  color: var(--color-text-weak);
  font-size: 0.92rem;
}

.mobile-menu,
.mobile-toc {
  display: none;
}

.doc-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 3rem;
  margin-top: 3rem;
  padding-top: 3rem;
  border-top: 1px solid var(--color-border-weak);
  color: var(--color-text-weak);
  font-size: 0.9rem;
}

.doc-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.doc-footer p {
  margin: 0;
}

@media (max-width: 58rem) {
  .site-header {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem;
    min-height: var(--nav-height);
    padding: 1rem 1.25rem;
  }

  .site-header__section {
    display: none;
  }

  .main-frame {
    display: block;
  }

  .sidebar-pane,
  .right-sidebar {
    display: none;
  }

  .mobile-menu,
  .mobile-toc {
    display: block;
    border-bottom: 1px solid var(--color-border-weak);
  }

  .mobile-menu {
    position: sticky;
    top: var(--nav-height);
    z-index: 9;
    background: var(--color-background);
  }

  .mobile-menu summary,
  .mobile-toc summary {
    cursor: pointer;
    padding: 0.85rem 1.25rem;
    color: var(--color-text-strong);
    font-weight: 500;
    list-style: none;
    user-select: none;
  }

  .mobile-menu summary::-webkit-details-marker,
  .mobile-toc summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary span {
    margin-right: 0.45rem;
    color: var(--color-background-interactive);
  }

  .mobile-menu nav {
    padding-bottom: 0.75rem;
  }

  .mobile-menu nav ul,
  .mobile-toc nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .mobile-menu nav a,
  .mobile-toc nav a {
    display: block;
    padding: 0.35rem 1.25rem;
    color: var(--color-text-weaker);
    text-decoration: none;
    user-select: none;
  }

  .mobile-menu nav a.active,
  .mobile-menu nav a[aria-current='page'] {
    background: var(--color-background-weak);
    color: var(--color-text-strong);
    font-weight: 600;
  }

  .mobile-menu .nav-group summary {
    padding: 0.6rem 1.25rem 0.25rem;
  }

  .mobile-menu .nav-group ul a {
    padding-left: 2rem;
  }

  .content-panel {
    padding: 1.5rem 1.25rem 3rem;
  }

  .content-panel h1 {
    font-size: 1.6rem;
  }

  .content-panel h2 {
    font-size: 1.35rem;
  }

  .mobile-toc {
    margin-top: 2.5rem;
    border-top: 1px solid var(--color-border-weak);
  }

  .mobile-toc nav {
    padding-bottom: 0.75rem;
  }

  .doc-footer {
    padding-top: 1.5rem;
  }
}

:where(a, summary, .skip-link):focus-visible {
  outline: 2px solid var(--color-background-interactive);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}