:root {
  color-scheme: light dark;
  --body-background: #ffffff;
  --body-font-color: #000000;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-500: #adb5bd;
  --color-link: #0055bb;
  --color-visited-link: #8440f1;
  --hint-info: #6bf;
  --hint-warning: #fd6;
  --hint-danger: #f66;

  --layout-max: 80rem;
  --layout-min: 20rem;
  --menu-width: 16rem;
  --toc-width: 16rem;
  --header-height: 3.5rem;
  --radius: 0.25rem;
  --space-1: 1px;
  --space-2: 0.25rem;
  --space-3: 0.5rem;
  --space-4: 1rem;
  --space-5: 2rem;
  --subtle-border: 1px solid var(--gray-200);
}

@media (prefers-color-scheme: dark) {
  :root {
    --body-background: #343a40;
    --body-font-color: #f8f9fa;
    --gray-100: rgba(255, 255, 255, 0.1);
    --gray-200: rgba(255, 255, 255, 0.2);
    --gray-500: rgba(255, 255, 255, 0.5);
    --color-link: #84b2ff;
    --color-visited-link: #b88dff;
  }
}

* { box-sizing: border-box; }
html { font-size: 17px; }
body {
  margin: 0;
  min-width: var(--layout-min);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--body-background);
  color: var(--body-font-color);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.33px;
}

a { color: var(--color-link); text-decoration: none; }
a:visited { color: var(--color-visited-link); }
.doc-content a:hover,
.doc-menu a:hover,
.doc-toc a:hover { text-decoration: underline; }

.container {
  width: min(100%, var(--layout-max));
  margin: 0 auto;
}

.doc-header {
  display: none;
  height: var(--header-height);
  border-bottom: var(--subtle-border);
  background: var(--body-background);
  position: sticky;
  top: 0;
  z-index: 70;
}
.doc-header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0 var(--space-4);
}
.brand-title { font-size: 0.95rem; font-weight: 650; }
.menu-toggle {
  border: var(--subtle-border);
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
}

.doc-shell {
  display: grid;
  grid-template-columns: var(--menu-width) minmax(0, 1fr) var(--toc-width);
  gap: var(--space-5);
  padding: var(--space-4);
  flex: 1;
}
.doc-menu {
  border-right: var(--subtle-border);
  padding-right: var(--space-4);
}
.menu-brand { margin-bottom: var(--space-4); }
.menu-subtitle { color: var(--gray-500); font-size: 0.85rem; }
.menu-block + .menu-block { margin-top: var(--space-4); }
.menu-title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--gray-500); margin-bottom: var(--space-3); }
.menu-links { list-style: none; margin: 0; padding: 0; }
.menu-links li { margin: 1em 0; }
.menu-links .nested { padding-left: 1rem; }
.menu-links a { display: block; color: inherit; opacity: 0.9; }
.menu-links a:hover { opacity: 0.5; }
.menu-links a.active { color: var(--color-link); opacity: 1; font-weight: 600; }

.doc-main { min-width: 0; }
.doc-content {
  margin: 1rem;
}
.doc-content h1,
.doc-content h2,
.doc-content h3,
.doc-content h4,
.doc-content h5,
.doc-content h6 {
  margin-top: 1.5em;
  margin-bottom: 1rem;
  line-height: 1.25;
  letter-spacing: 0;
}
.doc-content h4,
.doc-content h5,
.doc-content h6 { font-weight: 700; }
.anchor-link {
  opacity: 0;
  margin-left: 0.35rem;
  font-size: 0.75em;
}
.doc-content h1:hover .anchor-link,
.doc-content h2:hover .anchor-link,
.doc-content h3:hover .anchor-link,
.doc-content h4:hover .anchor-link,
.doc-content h5:hover .anchor-link,
.doc-content h6:hover .anchor-link,
.anchor-link:focus { opacity: 0.7; }

.doc-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  padding: 0 0.25rem;
  background: var(--gray-200);
  border-radius: 0.25rem;
  font-size: 0.875em;
}
.doc-content pre {
  padding: 1rem;
  background: var(--gray-100);
  border-radius: 0.25rem;
  overflow-x: auto;
}
.doc-content pre code { padding: 0; background: transparent; }
.doc-content table { width: 100%; border-collapse: collapse; }
.doc-content th,
.doc-content td { padding: 0.5rem 1rem; border: 1px solid var(--gray-200); }
.doc-content tbody tr:nth-child(even) { background: var(--gray-100); }
.doc-content blockquote {
  margin: 1rem 0;
  padding: 0.5rem 1rem 0.5rem 0.75rem;
  border-left: 0.25rem solid var(--gray-200);
  border-radius: 0.25rem;
  background: var(--gray-100);
}

.doc-toc {
  border-left: var(--subtle-border);
  padding-left: var(--space-4);
}
.doc-toc .toc-title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--gray-500); margin-bottom: var(--space-3); }
.doc-toc ul { list-style: none; margin: 0; padding: 0; }
.doc-toc li { margin: 0.55rem 0; }
.doc-toc a { color: inherit; opacity: 0.85; }

.search-input,
.search-select,
.search-button {
  width: 100%;
  border: var(--subtle-border);
  border-radius: 0.25rem;
  padding: 0.5rem;
  font-size: 0.95rem;
  background: var(--gray-100);
  color: inherit;
}
.search-button {
  cursor: pointer;
  background: var(--body-background);
}
.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
}
.search-row.with-select {
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 14rem) auto;
}
.note { color: var(--gray-500); font-size: 0.9rem; }
.surface {
  border: var(--subtle-border);
  border-radius: var(--radius);
  background: var(--body-background);
  padding: 1rem;
}

.suggestions {
  margin-top: 0.5rem;
  background: var(--body-background);
  border: var(--subtle-border);
  border-radius: 0.25rem;
  display: none;
  max-height: 20rem;
  overflow-y: auto;
}
.suggestions.visible { display: block; }
.suggestion-group { padding: 0.4rem 0.8rem; font-size: 0.85rem; color: var(--gray-500); border-top: var(--subtle-border); background: var(--gray-100); }
.suggestion { padding: 0.55rem 0.8rem; cursor: pointer; }
.suggestion:hover, .suggestion.highlighted { background: var(--gray-100); }
.suggestion.top { font-weight: 600; }

.man-body pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.5;
}
.Xr {
  background: var(--gray-100);
  border: var(--subtle-border);
}


.site-footer {
  border-top: var(--subtle-border);
  margin-top: auto;
}
.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4);
}
.site-footer-text {
  margin: 0;
  color: var(--gray-500);
  font-size: 0.9rem;
}
.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.doc-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  z-index: 60;
}

@media (max-width: 56rem) {
  .doc-header { display: block; }
  .doc-shell {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding: var(--space-4);
  }
  .doc-menu {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(16rem, 86vw);
    background: var(--body-background);
    padding: 0.75rem 1rem 1.25rem;
    transform: translateX(-102%);
    transition: transform 180ms ease;
    z-index: 80;
    box-shadow: 0 0 0.5rem rgba(0, 0, 0, 0.1);
    overflow-y: auto;
    border-right: var(--subtle-border);
  }
  body.nav-open .doc-menu { transform: translateX(0); }
  body.nav-open .doc-overlay { display: block; }
  body.nav-open .doc-main,
  body.nav-open .doc-toc { opacity: 0.4; }
  .doc-toc { border-left: 0; padding-left: 0; }
  .doc-content { margin: 0; }
  .site-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .search-row,
  .search-row.with-select { grid-template-columns: 1fr; }
}