/* ============================================================
   NerveStax documentation.

   Loads AFTER /styles.css and inherits every colour token from it —
   nothing here authors a colour beyond the tokens, so light/dark and
   any future brand re-sync flow through automatically.

   Layout: contents (left) · page (centre) · on-this-page (right).
   ============================================================ */

.docs {
  --side: 268px;
  --rail: 210px;
  --dnav-h: 60px;
  background: var(--bg);
}
.docs html { scroll-padding-top: calc(var(--dnav-h) + 16px); }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--surface); color: var(--ink); padding: 10px 16px; border: 1px solid var(--rule);
}
.skip:focus { left: 12px; top: 12px; }

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

.dnav {
  position: sticky; top: 0; z-index: 60;
  height: var(--dnav-h);
  background: color-mix(in oklab, var(--bg) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.dnav-in {
  display: flex; align-items: center; gap: 16px; height: 100%;
  padding: 0 20px; max-width: 1600px; margin: 0 auto;
}
.dnav .brand { text-decoration: none; color: var(--ink); }
.dnav-kind {
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-2); text-decoration: none;
  padding: 4px 8px; border: 1px solid var(--rule); border-radius: 2px;
}
.dnav-kind:hover { color: var(--ink); border-color: var(--ink-2); }
.nav-toggle { display: none; }

.dnav-search {
  display: flex; align-items: center; gap: 8px;
  margin-left: auto;
  width: min(360px, 36vw);
  padding: 0 10px; height: 34px;
  border: 1px solid var(--rule); background: var(--field); color: var(--ink-3);
}
.dnav-search:focus-within { border-color: var(--accent); color: var(--ink-2); }
.dnav-search input {
  flex: 1; min-width: 0; border: 0; background: none; outline: none;
  font-size: 14px; color: var(--ink);
}
.dnav-search input::placeholder { color: var(--ink-3); }
.dnav-search input::-webkit-search-cancel-button { filter: grayscale(1); opacity: .5; }
.dnav-search kbd {
  font-size: 10.5px; padding: 1px 5px; color: var(--ink-3);
  border: 1px solid var(--rule); border-radius: 2px;
}
.dnav-side { display: flex; align-items: center; gap: 10px; }
.dnav .btn { padding: 9px 14px; font-size: 11px; }

/* ---------------------------------------------------------- shell */

/* NOTE: no `align-items: start` — the side columns must stretch to the row's
   full height, otherwise their sticky inner panel runs out of track and the
   contents list scrolls away partway down a long page. */
.shell {
  display: grid;
  grid-template-columns: var(--side) minmax(0, 1fr) var(--rail);
  gap: 0;
  max-width: 1600px; margin: 0 auto;
  min-height: calc(100vh - var(--dnav-h));
}

.sidebar { border-right: 1px solid var(--rule); }
.sidebar-in {
  position: sticky; top: var(--dnav-h);
  max-height: calc(100vh - var(--dnav-h));
  overflow-y: auto; overscroll-behavior: contain;
  padding: 26px 20px 40px 20px;
}
.side-h {
  margin: 0 0 12px; font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-2); display: flex; align-items: baseline; gap: 8px;
}
.side-count { color: var(--ink-3); letter-spacing: .06em; }
.side-foot { margin: 26px 0 0; font-size: 12.5px; color: var(--ink-2); line-height: 1.6; }
.side-foot a { color: var(--accent); text-decoration: none; }
.side-foot a:hover { text-decoration: underline; }

.toc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; }
.toc-sub { margin: 4px 0 4px 10px; padding-left: 10px; border-left: 1px solid var(--rule); }
.toc-group { margin: 16px 0 6px; }
.toc-group-h {
  margin: 0 0 6px; font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3);
}
.toc-link {
  display: block; padding: 6px 10px; text-decoration: none;
  font-size: 14px; line-height: 1.4; color: var(--ink-2);
  border-left: 2px solid transparent; border-radius: 2px;
}
.toc-link:hover { color: var(--ink); background: var(--bg-2); }
.toc-link.is-active {
  color: var(--accent); background: var(--accent-soft);
  border-left-color: var(--accent); font-weight: 500;
}
.toc-empty { font-size: 13px; color: var(--ink-2); line-height: 1.6; }

.results { display: grid; gap: 2px; }
.results-note {
  margin: 0 0 8px; font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3);
}
.result { display: grid; gap: 3px; padding: 9px 10px; text-decoration: none; border-radius: 2px; }
.result:hover { background: var(--bg-2); }
.result-t { font-size: 14px; color: var(--ink); }
.result-s { font-size: 12px; line-height: 1.5; color: var(--ink-2); }

/* ---------------------------------------------------------- main */

.main { min-width: 0; padding: 30px clamp(24px, 4vw, 56px) 80px; }
.crumb {
  margin: 0 0 18px; font-size: 11px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-3);
}
.prose[aria-busy="true"] { opacity: .35; }

/* ---------------------------------------------------------- right rail */

.outline-wrap { border-left: 1px solid var(--rule); }
.outline-in {
  position: sticky; top: var(--dnav-h);
  max-height: calc(100vh - var(--dnav-h));
  overflow-y: auto; padding: 30px 18px 40px;
}
#outline { display: grid; gap: 1px; }
.outline-link {
  display: block; padding: 4px 8px; text-decoration: none;
  font-size: 12.5px; line-height: 1.45; color: var(--ink-2);
  border-left: 2px solid transparent;
}
.outline-link.lvl-3 { padding-left: 20px; font-size: 12px; }
.outline-link:hover { color: var(--ink); }
.outline-link.is-active { color: var(--accent); border-left-color: var(--accent); }
.outline-top {
  display: inline-block; margin-top: 18px; font-family: var(--font-mono);
  font-size: 11px; letter-spacing: .06em; color: var(--ink-3); text-decoration: none;
}
.outline-top:hover { color: var(--ink); }

/* ============================================================
   PROSE — the rendered markdown
   ============================================================ */

.prose { max-width: 76ch; font-size: 16px; line-height: 1.68; color: var(--ink); }
.prose > *:first-child { margin-top: 0; }

.prose h1, .prose h2, .prose h3, .prose h4, .prose h5, .prose h6 {
  line-height: 1.25; letter-spacing: -0.02em; scroll-margin-top: calc(var(--dnav-h) + 20px);
}
.prose h1 { font-size: clamp(28px, 3.6vw, 38px); margin: 0 0 18px; font-weight: 600; }
.prose h2 {
  font-size: 23px; font-weight: 600; margin: 52px 0 16px;
  padding-top: 22px; border-top: 1px solid var(--rule);
}
.prose h3 { font-size: 18px; font-weight: 600; margin: 34px 0 12px; }
.prose h4 { font-size: 15.5px; font-weight: 600; margin: 26px 0 10px; color: var(--ink); }
.prose h5, .prose h6 {
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink-2); margin: 24px 0 8px;
}

.prose .anchor {
  margin-left: 8px; color: var(--ink-3); text-decoration: none;
  font-family: var(--font-mono); font-weight: 400; opacity: 0; transition: opacity .12s;
}
.prose :is(h1,h2,h3,h4,h5,h6):hover .anchor,
.prose .anchor:focus-visible { opacity: 1; }
.prose .anchor:hover { color: var(--accent); }

.prose p { margin: 0 0 17px; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 2.5px; text-decoration-thickness: 1px; }
.prose a:hover { color: var(--accent-hover); }
.prose strong { font-weight: 600; }
.prose hr { height: 1px; border: 0; background: var(--rule); margin: 34px 0; }
/* Docs conventionally write "---" above every "## " — that plus the h2's own
   top rule drew two hairlines with a dead gap between them. One rule wins. */
.prose hr + :is(h2, h3) { border-top: 0; padding-top: 0; margin-top: 26px; }
.prose img { display: block; margin: 22px 0; border: 1px solid var(--rule); border-radius: 3px; }

.prose ul, .prose ol { margin: 0 0 17px; padding-left: 24px; }
.prose li { margin: 6px 0; }
.prose li > ul, .prose li > ol { margin: 6px 0 4px; }
.prose li::marker { color: var(--ink-3); }
.prose li.task { list-style: none; margin-left: -20px; }
.prose li.task input { margin-right: 8px; accent-color: var(--accent); }

/* inline code — quiet, not a badge */
.prose :not(pre) > code {
  font-family: var(--font-mono); font-size: 0.875em;
  padding: 1.5px 5px; border-radius: 3px;
  background: var(--bg-2); border: 1px solid var(--rule-soft); color: var(--ink);
  word-break: break-word;
}
.prose a > code { color: inherit; }

/* code blocks are brand "artifact" panels: dark in BOTH themes, on purpose */
.prose figure.code {
  position: relative; margin: 20px 0 24px;
  background: var(--panel); border: 1px solid var(--panel-rule); border-radius: 4px;
  overflow: hidden;
}
/* In dark the page background IS the panel colour, so lift the block a step —
   still a brand dark surface, just distinguishable from the page. */
[data-theme="dark"] .prose figure.code { background: var(--surface); }
.prose figure.code pre {
  margin: 0; padding: 16px 18px; overflow-x: auto;
  font-family: var(--font-mono); font-size: 13px; line-height: 1.6;
  color: var(--panel-ink); tab-size: 2;
}
.prose figure.code code { font: inherit; background: none; border: 0; padding: 0; color: inherit; }
.code-lang {
  position: absolute; top: 8px; right: 62px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--panel-ink-3); pointer-events: none;
}
.code-copy {
  position: absolute; top: 6px; right: 6px;
  padding: 4px 9px; cursor: pointer;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .06em;
  color: var(--panel-ink-2); background: var(--panel-2);
  border: 1px solid var(--panel-rule); border-radius: 3px;
  opacity: 0; transition: opacity .12s, color .12s;
}
.prose figure.code:hover .code-copy, .code-copy:focus-visible { opacity: 1; }
.code-copy:hover { color: var(--panel-ink); }
.code-copy.is-done { color: var(--ok); border-color: var(--ok); opacity: 1; }

/* tables */
.prose .table-wrap { overflow-x: auto; margin: 20px 0 26px; border: 1px solid var(--rule); border-radius: 3px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 14px; }
.prose th, .prose td {
  text-align: left; padding: 10px 14px;
  border-bottom: 1px solid var(--rule-soft); vertical-align: top;
}
.prose thead th {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-2); font-weight: 500; background: var(--bg-2);
  border-bottom: 1px solid var(--rule);
}
.prose tbody tr:last-child td { border-bottom: 0; }
.prose tbody tr:hover td { background: color-mix(in oklab, var(--bg-2) 60%, transparent); }

/* blockquotes, and the note/warning callouts they can carry */
.prose blockquote {
  margin: 20px 0; padding: 14px 18px;
  border-left: 2px solid var(--rule-strong); background: var(--bg-2);
  color: var(--ink-2); border-radius: 0 3px 3px 0;
}
.prose blockquote > *:last-child { margin-bottom: 0; }
.prose blockquote.cx-note, .prose blockquote.cx-tip { border-left-color: var(--info); }
.prose blockquote.cx-warning, .prose blockquote.cx-caution { border-left-color: var(--warn); }
.prose blockquote.cx-important { border-left-color: var(--accent); }
.prose blockquote.cx-danger { border-left-color: var(--err); }

/* prev / next */
.doc-pager {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin-top: 56px; padding-top: 26px; border-top: 1px solid var(--rule);
}
.pager {
  display: grid; gap: 4px; padding: 14px 16px; text-decoration: none;
  border: 1px solid var(--rule); border-radius: 3px; color: var(--ink);
}
.pager:hover { border-color: var(--accent); }
.pager-next { text-align: right; }
.pager-k {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-3);
}
.pager-t { font-size: 15px; }

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

.dfoot { border-top: 1px solid var(--rule); }
.dfoot-in {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  max-width: 1600px; margin: 0 auto; padding: 20px 24px;
  font-size: 11.5px; letter-spacing: .05em; color: var(--ink-2);
}
.dfoot-links { display: flex; gap: 18px; }
.dfoot-links a { color: var(--ink-2); text-decoration: none; font-family: var(--font-mono); font-size: 11.5px; }
.dfoot-links a:hover { color: var(--accent); }

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

.nav-scrim {
  position: fixed; inset: 0; z-index: 55;
  background: oklch(0 0 0 / .45);
  opacity: 0; pointer-events: none; transition: opacity .18s;
}

@media (max-width: 1180px) {
  .shell { grid-template-columns: var(--side) minmax(0, 1fr); }
  .outline-wrap { display: none; }
}

@media (max-width: 880px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .nav-toggle { display: grid; }
  .dnav-kind { display: none; }
  .dnav-cta { display: none; }
  .dnav-search { width: auto; flex: 1; }
  .dnav-search kbd { display: none; }

  .sidebar {
    position: fixed; z-index: 56; top: var(--dnav-h); bottom: 0; left: 0;
    width: min(320px, 86vw);
    background: var(--surface); border-right: 1px solid var(--rule);
    transform: translateX(-102%); transition: transform .2s ease;
  }
  .nav-open .sidebar { transform: none; box-shadow: 0 0 40px oklch(0 0 0 / .28); }
  .nav-open .nav-scrim { opacity: 1; pointer-events: auto; }
  .nav-open { overflow: hidden; }
  .sidebar-in { max-height: 100%; height: 100%; }
  .main { padding: 24px 20px 64px; }
  .prose h2 { margin-top: 40px; }
  .doc-pager { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .dnav-in { gap: 10px; padding: 0 14px; }
  .brand span:not(.tile) { font-size: 15px; }
  .prose { font-size: 15.5px; }
  .code-copy { opacity: 1; }
}

/* ---------------------------------------------------------- print */

@media print {
  .dnav, .sidebar, .outline-wrap, .dfoot, .doc-pager, .code-copy, .skip { display: none !important; }
  .shell { display: block; }
  .main { padding: 0; }
  .prose { max-width: none; color: #000; }
  .prose figure.code { background: #f5f5f5; border-color: #ccc; }
  .prose figure.code pre { color: #111; }
}