/* Refnusa docs page: a reference manual, not a landing page. See design-system/refnusa/MASTER.md
   ("Decision (2026-09-24 rework)") for the source of every value below. */

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/ibm-plex-sans-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/fonts/ibm-plex-sans-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/fonts/ibm-plex-sans-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2');
}

:root {
  --surface: #FFFFFF;
  --surface-container-low: #F7F7F8;
  --surface-container: #F1F2F4;
  --outline-variant: #E4E6EA;
  --outline: #C9CDD3;
  --on-surface: #16181C;
  --on-surface-variant: #545A63;
  --primary: #A31621;
  --primary-container: #FBEAEA;
  --on-primary-container: #7F1019;
  --code-surface: #16181C;
  --on-code: #E7E9EC;
  --code-muted: #9AA1AB;
  --code-key: #F2B8B5;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --surface: #121316;
    --surface-container-low: #17191D;
    --surface-container: #1D2025;
    --outline-variant: #2B2F36;
    --outline: #3A3F47;
    --on-surface: #E7E9EC;
    --on-surface-variant: #A9B0BA;
    --primary: #F2B8B5;
    --primary-container: #3B1418;
    --on-primary-container: #FFDAD6;
    --code-surface: #0C0D0F;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, p, ul, ol, dl, dd, figure, pre, table, th, td { margin: 0; padding: 0; }

html { color-scheme: light dark; }
body {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 16px;
  line-height: 1.625;
  color: var(--on-surface);
  background: var(--surface);
}

h1, h2, h3 { font-weight: 600; }
h1 { font-size: 1.75rem; line-height: 1.286; letter-spacing: -0.01em; margin-bottom: var(--space-md); }
h2 { font-size: 1.5rem; line-height: 1.333; margin-bottom: var(--space-md); }
h3 { font-size: 1.125rem; line-height: 1.444; margin-bottom: var(--space-sm); }
@media (min-width: 480px) {
  h1 { font-size: 2rem; line-height: 1.25; }
}
p { max-width: 68ch; margin-bottom: var(--space-md); }
p:last-child { margin-bottom: 0; }
ul, ol { padding-left: 1.25em; }

a { color: var(--primary); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; transition: text-decoration-thickness 150ms; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.875em;
  background: var(--surface-container);
  padding: 1px 5px;
  border-radius: 4px;
}
pre code { background: none; padding: 0; border-radius: 0; font-size: inherit; }

.skip {
  position: absolute;
  top: 0;
  left: 0;
  transform: translateY(-100%);
  background: var(--surface);
  color: var(--on-surface);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--outline-variant);
  border-radius: 4px;
  z-index: 20;
  transition: transform 150ms;
}
.skip:focus { transform: translateY(0); }

.muted { color: var(--on-surface-variant); }

/* ---------- app bar ---------- */
.appbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--outline-variant);
}
.appbar-row {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-inline: var(--space-md);
}
.appbar-left { display: flex; align-items: baseline; gap: var(--space-sm); min-width: 0; }
.wordmark { font-weight: 600; font-size: 1.125rem; color: var(--on-surface); text-decoration: none; }
.appbar-label { color: var(--on-surface-variant); font-size: 0.8125rem; white-space: nowrap; }
.appbar-right { display: flex; align-items: center; gap: var(--space-md); position: relative; }
.appbar-baseurl { display: none; color: var(--on-surface-variant); font-size: 0.8125rem; }

/* Mobile navigation: a native disclosure, so it works with no JavaScript. Hidden entirely from
   1024px, where the permanent drawer below takes over. */
.nav-disclosure { position: relative; }
.nav-disclosure summary {
  cursor: pointer;
  list-style: none;
  font-weight: 500;
  font-size: 0.875rem;
  padding: 6px 10px;
  border-radius: 4px;
  transition: background-color 150ms;
}
.nav-disclosure summary::-webkit-details-marker { display: none; }
.nav-disclosure summary:hover { background: color-mix(in srgb, var(--on-surface) 6%, transparent); }
.nav-disclosure nav {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  width: max(260px, 80vw);
  max-width: 320px;
  max-height: calc(100vh - 72px);
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: 6px;
  padding: var(--space-sm) 0;
}

/* ---------- shell: drawer + main ---------- */
.shell { display: block; }
main { padding-inline: var(--space-md); }
.plain-main { padding-block: var(--space-2xl); }
main > section { padding-block: var(--space-xl); border-bottom: 1px solid var(--outline-variant); }
main > section:last-of-type { border-bottom: none; }

.drawer { display: none; }
@media (min-width: 1024px) {
  .nav-disclosure { display: none; }
  .shell { display: grid; grid-template-columns: 248px minmax(0, 1fr); align-items: start; }
  .drawer {
    display: block;
    position: sticky;
    top: 56px;
    height: calc(100vh - 56px);
    overflow-y: auto;
    background: var(--surface-container-low);
    border-right: 1px solid var(--outline-variant);
    padding-block: var(--space-md);
  }
  .appbar-row, main, footer { padding-inline: 40px; }
  .appbar-baseurl { display: inline; }
  main { max-width: 1040px; }
}

nav[aria-label="Sections"] { display: flex; flex-direction: column; }
.nav-group { padding-inline: var(--space-sm); margin-bottom: var(--space-sm); }
.nav-heading { margin: var(--space-md) var(--space-sm) var(--space-xs); font-size: 0.75rem; font-weight: 600; color: var(--on-surface-variant); }
.nav-link {
  display: block;
  padding: 8px 12px;
  border-radius: 4px;
  color: var(--on-surface);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 150ms;
}
.nav-link:hover { background: color-mix(in srgb, var(--on-surface) 6%, transparent); }
.nav-link[aria-current="true"] { background: var(--primary-container); color: var(--on-primary-container); }
.nav-sub { font-weight: 400; font-size: 0.8125rem; padding-left: 20px; display: flex; gap: 6px; align-items: baseline; }
.nav-sub code { background: none; padding: 0; font-size: 0.6875rem; color: var(--on-surface-variant); }
.nav-link[aria-current="true"] .nav-sub code, .nav-link[aria-current="true"] code { color: inherit; }

/* ---------- code panels (Vercel-style: header with a label and, once JS runs, a Copy button) ---------- */
.code-panel { background: var(--code-surface); border: 1px solid var(--outline-variant); border-radius: 6px; overflow: hidden; }
.code-panel + .code-panel { margin-top: var(--space-md); }
.code-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: 8px var(--space-md);
  border-bottom: 1px solid var(--outline-variant);
}
.code-label { font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem; color: var(--code-muted); }
.code-panel pre {
  margin: 0;
  padding: var(--space-md);
  overflow-x: auto;
  color: var(--on-code);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.84375rem;
  line-height: 1.6296;
}
.tok-key { color: var(--code-key); }
.tok-punct, .tok-comment { color: var(--code-muted); }

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--code-muted);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 150ms, color 150ms;
}
.copy-btn:hover { background: color-mix(in srgb, var(--on-code) 12%, transparent); color: var(--on-code); }

/* ---------- tabs (Material 3 secondary tabs) ---------- */
.tabs { margin-block: var(--space-md); }
.tablist { display: flex; gap: var(--space-lg); border-bottom: 1px solid var(--outline-variant); margin-bottom: var(--space-md); }
.tablist [role="tab"] {
  appearance: none;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: var(--space-sm) 2px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: color 150ms, border-color 150ms;
}
.tablist [role="tab"]:hover { color: var(--on-surface); }
.tablist [role="tab"][aria-selected="true"] { color: var(--primary); border-bottom-color: var(--primary); }
.tab-plain-label { font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem; color: var(--on-surface-variant); margin-bottom: var(--space-sm); }
.tab-panel + .tab-panel { margin-top: var(--space-md); }

/* ---------- tables (labelled stacked rows on phones) ---------- */
.table-scroll { overflow-x: auto; margin-block: var(--space-md); }
table { min-width: 100%; border-collapse: collapse; }
th, td { text-align: left; vertical-align: top; padding: var(--space-sm) 12px; border-bottom: 1px solid var(--outline-variant); }
thead th { background: var(--surface-container-low); font-weight: 600; font-size: 0.875rem; border-bottom: 1px solid var(--outline); }
@media (max-width: 767px) {
  thead { display: none; }
  tbody, tr, td { display: block; width: 100%; }
  tr { border-bottom: 1px solid var(--outline-variant); padding-block: var(--space-md); }
  td { border-bottom: none; padding: var(--space-xs) 0; }
  td::before {
    content: attr(data-label);
    display: block;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--on-surface-variant);
    margin-bottom: var(--space-xs);
  }
}

.dataset-label { font-weight: 500; margin-bottom: 2px; }
.dataset-code { color: var(--on-surface-variant); }
.source-clamp { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
td details { margin-top: var(--space-xs); }
td details summary { cursor: pointer; color: var(--primary); font-size: 0.8125rem; }
td details p { max-width: none; margin-top: var(--space-xs); color: var(--on-surface-variant); }

.meter { display: flex; align-items: center; gap: var(--space-sm); }
.meter-bar {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  width: 96px;
  height: 4px;
  border: none;
  border-radius: 2px;
  overflow: hidden;
  flex: none;
  vertical-align: middle;
  background: var(--outline-variant);
  color: var(--on-surface-variant);
}
.meter-bar::-webkit-progress-bar { background: var(--outline-variant); border-radius: 2px; }
.meter-bar::-webkit-progress-value { background: var(--on-surface-variant); border-radius: 2px; }
.meter-bar::-moz-progress-bar { background: var(--on-surface-variant); border-radius: 2px; }
.meter-label { font-size: 0.8125rem; color: var(--on-surface-variant); white-space: nowrap; }
.status { font-size: 0.875rem; white-space: nowrap; }

/* ---------- REST reference ---------- */
#rest > .muted { margin-bottom: var(--space-lg); }
.endpoint { padding-block: var(--space-xl); border-top: 1px solid var(--outline-variant); }
#rest > section:first-of-type .endpoint { border-top: none; padding-top: 0; }
.endpoint-info > * + *, .endpoint-example > * + * { margin-top: var(--space-md); }
.method { font-family: 'IBM Plex Mono', monospace; color: var(--primary); font-weight: 600; margin-right: var(--space-sm); }
h3 .path, .endpoint-info h3 code { font-weight: 400; font-size: 1rem; }
.example-caption { color: var(--on-surface-variant); font-size: 0.8125rem; margin: 0; }
@media (min-width: 1280px) {
  /* minmax(0, 1fr), not 1fr: a grid item's default min-width is auto (its content's min-content
     size), which for a code panel sizes to the longest unwrapped line and blows out the column,
     defeating the pre's own overflow-x: auto. minmax(0, 1fr) lets each column shrink below that. */
  .endpoint { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-2xl); }
  main { max-width: 1280px; }
}

/* ---------- MCP tools list (Material 3 two-line list) ---------- */
.tool-list { list-style: none; padding: 0; }
.tool-list li { padding-block: var(--space-md); border-bottom: 1px solid var(--outline-variant); }
.tool-list li:last-child { border-bottom: none; }
.tool-name { margin-bottom: 2px; }
.tool-args { font-family: 'IBM Plex Mono', monospace; font-size: 0.8125rem; color: var(--on-surface-variant); margin-bottom: 2px; }
.tool-desc { color: var(--on-surface-variant); }

/* ---------- sources and changelog ---------- */
.changelog-list { list-style: none; padding: 0; margin-top: var(--space-lg); }
.changelog-list li { padding-block: var(--space-md); border-bottom: 1px solid var(--outline-variant); }
.changelog-list li:last-child { border-bottom: none; }
.changelog-meta { margin-bottom: 2px; }
.changelog-meta code { margin-right: var(--space-sm); }

/* ---------- footer, snackbar ---------- */
footer { border-top: 1px solid var(--outline-variant); padding: var(--space-lg) var(--space-md) var(--space-2xl); color: var(--on-surface-variant); font-size: 0.875rem; }
main footer { padding-inline: 0; }
.footer-links { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-md); padding: 0; margin-top: var(--space-sm); }

.snackbar {
  position: fixed;
  left: var(--space-md);
  bottom: var(--space-md);
  background: var(--on-surface);
  color: var(--surface);
  padding: 10px var(--space-md);
  border-radius: 4px;
  font-size: 0.875rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 150ms, transform 150ms;
  pointer-events: none;
  z-index: 20;
}
.snackbar.show { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  a, .skip, .nav-link, .copy-btn, .tablist [role="tab"], .snackbar { transition: none; }
}