/* SPDX-FileCopyrightText: 2026 e-editiones
   SPDX-License-Identifier: CC0-1.0 */

/* The page grid is opm's packaged layout (opm/layout.html.j2): the site
   header is its header, the navigation its `before` column, "On this page"
   its `after` column. This file sets the layout's measurements through the
   --opm-layout-* properties on body.doc and styles what goes inside. The
   webfonts come from fonts.css, linked before this file. */

/* Palette and type follow the TEI Guidelines design system: a warm paper ground,
   one amber accent reserved for what is clickable, and a three-family split —
   serif for prose, sans for chrome, mono for anything literally XML. */
:root {
  --doc-paper: #fcfaf6;
  --doc-surface: #fff;
  --doc-ink: #222120;
  --doc-muted: #6e6860;
  --doc-rule: #e5dfd4;
  --doc-wash: #fbf6ec;
  --doc-code-bg: #f6f3ec;
  --doc-amber: #f7a823;
  --doc-amber-text: #9a6510;
  --doc-tag: #9a6510;
  --doc-attr: #6e6860;
  --doc-val: #55504a;
  --doc-selection: #fbe3b0;
  --doc-shadow: rgba(34, 33, 32, 0.12);

  --doc-link: var(--doc-amber-text);
  --doc-link-hover: var(--doc-ink);
  /* Read by the upstream tagdocs.css when tagdocs output is styled outside this
     site; kept in step with the palette so that case does not go stale. */
  --doc-canvas: var(--doc-paper);
  --doc-accent: var(--doc-amber-text);
  --doc-term: var(--doc-ink);
  --doc-code: var(--doc-val);

  --doc-header-h: 4.1rem;
  --doc-scroll-pad: calc(var(--doc-header-h) + 1.5rem);
  --doc-sidebar-w: 14.5rem;
  --doc-aside-w: 12.25rem;
  --doc-measure: 42rem;

  --doc-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --doc-body: "Work Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --doc-mono: "Fira Code", ui-monospace, Menlo, Consolas, monospace;
  --doc-display: var(--doc-serif);
  color-scheme: light;
}

/* Dark is opt-in via the header toggle, which sets data-theme on <html>; with no
   explicit choice the system preference decides. */
:root[data-theme="dark"],
:root:not([data-theme]) {
  --doc-dark-paper: #171614;
  --doc-dark-surface: #1e1d1a;
  --doc-dark-ink: #ede9e2;
  --doc-dark-muted: #a09889;
  --doc-dark-rule: #332f29;
  --doc-dark-wash: #221f19;
  --doc-dark-code-bg: #1c1b18;
  --doc-dark-val: #cfc8bc;
}

:root[data-theme="dark"] {
  --doc-paper: var(--doc-dark-paper);
  --doc-surface: var(--doc-dark-surface);
  --doc-ink: var(--doc-dark-ink);
  --doc-muted: var(--doc-dark-muted);
  --doc-rule: var(--doc-dark-rule);
  --doc-wash: var(--doc-dark-wash);
  --doc-code-bg: var(--doc-dark-code-bg);
  --doc-amber-text: var(--doc-amber);
  --doc-tag: var(--doc-amber);
  --doc-attr: var(--doc-dark-muted);
  --doc-val: var(--doc-dark-val);
  --doc-selection: #5a4413;
  --doc-shadow: rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --doc-paper: var(--doc-dark-paper);
    --doc-surface: var(--doc-dark-surface);
    --doc-ink: var(--doc-dark-ink);
    --doc-muted: var(--doc-dark-muted);
    --doc-rule: var(--doc-dark-rule);
    --doc-wash: var(--doc-dark-wash);
    --doc-code-bg: var(--doc-dark-code-bg);
    --doc-amber-text: var(--doc-amber);
    --doc-tag: var(--doc-amber);
    --doc-attr: var(--doc-dark-muted);
    --doc-val: var(--doc-dark-val);
    --doc-selection: #5a4413;
    --doc-shadow: rgba(0, 0, 0, 0.45);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html {
  font-size: 100%;
  scroll-padding-top: var(--doc-scroll-pad);
}
body.doc {
  /* Navigation at the left edge, "On this page" at the right, the page
     between them; no gaps or gutters, the columns pad themselves. */
  --opm-layout-gutter: 0px;
  --opm-layout-gap: 0px;
  --opm-layout-before-width: var(--doc-sidebar-w);
  --opm-layout-after-width: var(--doc-aside-w);
  --opm-layout-sticky-top: var(--doc-header-h);
  --opm-background-color-drawer: var(--doc-surface);
  margin: 0;
  color: var(--doc-ink);
  background: var(--doc-paper);
  font-family: var(--doc-serif);
  font-size: 1.0625rem;
  line-height: 1.7;
  font-optical-sizing: auto;
  text-wrap: pretty;
}
::selection { background: var(--doc-selection); color: var(--doc-ink); }

a { color: var(--doc-link); text-decoration: none; }
a:hover { color: var(--doc-link-hover); text-decoration: underline; text-underline-offset: 3px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0);
}
.doc .opm-skip:focus {
  padding: 0.5rem 0.8rem; background: var(--doc-amber); color: #222120;
  font-family: var(--doc-body); font-weight: 600;
}

/* ── Header ─────────────────────────────────────────────────────────────── */

.doc .page-header {
  background: var(--doc-surface);
  border-bottom: 1px solid var(--doc-rule);
}
.doc .menubar {
  --opm-menubar-max: 100%;
  gap: 1.5rem;
  min-height: var(--doc-header-h);
  padding: 0 1.75rem;
  font-family: var(--doc-body);
  color: var(--doc-ink);
}
.doc .menubar ul { gap: 1.5rem; }
.doc .menubar > ul:last-child { flex: 0 1 auto; gap: 1.5rem; padding-block: 0.75rem; }
.doc .menubar .logo a {
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 0.938rem;
  letter-spacing: -0.01em;
  color: var(--doc-ink);
}
.doc .menubar .logo a:hover { text-decoration: none; }
.doc .menubar .logo a:hover .logo__title { color: var(--doc-ink); }
/* Only the controls on the right are padded, so the logo may take the
   menubar's full height (--doc-header-h); set --doc-logo-height to resize it,
   keeping its aspect ratio. */
.doc .logo__image {
  width: auto;
  max-width: 100%;
  height: var(--doc-logo-height, 2.75rem);
}
.doc .logo__title {
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
}
/* Beside a logo, a rule sets the title apart. */
.doc .logo__image + .logo__title {
  align-self: stretch;
  display: flex;
  align-items: center;
  margin-left: 0.5rem;
  padding-left: 1.25rem;
  border-left: 1px solid var(--doc-rule);
}
.doc-edition {
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--doc-muted);
  border-left: 1px solid var(--doc-rule);
  padding-left: 1.25rem;
}
.doc-search { position: relative; width: 22rem; min-width: 0; }
.doc-search input {
  width: 100%;
  padding: 0.44rem 0.8rem;
  border: 1px solid var(--doc-rule);
  border-radius: 999px;
  background: var(--doc-paper);
  color: var(--doc-ink);
  font-family: var(--doc-body);
  font-size: 0.813rem;
  min-height: 2.125rem;
}
.doc-search input::placeholder { color: var(--doc-muted); }
.doc-search input:focus {
  outline: none;
  border-color: var(--doc-amber);
  box-shadow: 0 0 0 3px rgba(247, 168, 35, 0.22);
}
/* Qualified to outrank the menubar's `.menubar ul` and `.doc .menubar ul`,
   which would lay the hits out in a row with wide gaps. */
.doc .doc-search ul.doc-search__hits {
  position: absolute; left: 0; right: 0; top: 100%;
  display: flex; flex-direction: column; align-items: stretch; gap: 0;
  margin: 0.3rem 0 0; padding: 0.3rem 0;
  list-style: none;
  background: var(--doc-surface);
  border: 1px solid var(--doc-rule);
  border-radius: 0.4rem;
  max-height: 18rem;
  overflow: auto;
  box-shadow: 0 10px 28px var(--doc-shadow);
  font-size: 0.875rem;
}
.doc .doc-search ul.doc-search__hits[hidden] { display: none; }
.doc-search__hits a {
  display: block; padding: 0.35rem 0.8rem;
  color: var(--doc-ink); text-decoration: none;
}
.doc-search__hits a:hover, .doc-search__hits [aria-selected="true"] a {
  background: var(--doc-wash);
  color: var(--doc-amber-text);
}
.doc-search__kind { color: var(--doc-muted); font-size: 0.85em; margin-left: 0.4rem; }
.doc-theme {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.125rem;
  height: 2.125rem;
  padding: 0;
  color: var(--doc-ink);
  background: transparent;
  border: 1px solid var(--doc-rule);
  border-radius: 999px;
  cursor: pointer;
}
.doc-theme:hover { background: var(--doc-wash); border-color: var(--doc-amber); }
.doc-theme:focus-visible {
  outline: none;
  border-color: var(--doc-amber);
  box-shadow: 0 0 0 3px rgba(247, 168, 35, 0.22);
}
.doc-theme svg {
  width: 1.05rem;
  height: 1.05rem;
}
.doc-theme .doc-theme__sun { display: none; }
:root[data-theme="dark"] .doc-theme .doc-theme__moon { display: none; }
:root[data-theme="dark"] .doc-theme .doc-theme__sun { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .doc-theme .doc-theme__moon { display: none; }
  :root:not([data-theme]) .doc-theme .doc-theme__sun { display: block; }
}

/* ── Shell ──────────────────────────────────────────────────────────────── */

.doc .opm-layout > :is(.before, .after) {
  padding: 0;
}

.doc-sidebar {
  padding: 1.875rem 1.25rem 3.75rem 1.75rem;
  border-right: 1px solid var(--doc-rule);
  font-family: var(--doc-body);
  font-size: 0.813rem;
  line-height: 1.5;
}
.doc-sidebar a {
  display: block;
  padding: 0.3rem 0.5rem;
  border-radius: 0.3rem;
  color: var(--doc-muted);
  text-decoration: none;
}
.doc-sidebar a:hover { background: var(--doc-wash); color: var(--doc-ink); text-decoration: none; }
.doc-sidebar a[aria-current] {
  background: var(--doc-wash);
  color: var(--doc-ink);
  font-weight: 600;
  box-shadow: inset 2px 0 0 var(--doc-amber);
}
.doc-sidebar ul { list-style: none; margin: 0; padding: 0; }
.doc-sidebar li { margin: 0.1rem 0; }
.doc-sidebar__label {
  font-size: 0.656rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--doc-muted);
  margin: 0 0 0.75rem;
}

.doc-main {
  min-width: 0;
  max-width: var(--doc-measure);
  padding: 3.5rem 2.75rem 7.5rem;
}

.doc-aside {
  padding: 3.5rem 1.75rem 3.75rem 0;
  font-family: var(--doc-body);
  font-size: 0.781rem;
  line-height: 1.5;
}
.doc-aside__label {
  font-size: 0.656rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--doc-muted);
  margin-bottom: 0.875rem;
}
.doc-aside ul {
  list-style: none;
  margin: 0;
  padding: 0 0 0 0.875rem;
  border-left: 1px solid var(--doc-rule);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.doc-aside ul[hidden] { display: none; }
.doc-aside a { color: var(--doc-muted); text-decoration: none; }
.doc-aside a:hover { color: var(--doc-ink); }
.doc-aside li.is-sub { padding-left: 0.75rem; }

.doc-footer {
  border-top: 1px solid var(--doc-rule);
  padding: 1.625rem 1.75rem;
  font-family: var(--doc-body);
  font-size: 0.719rem;
  color: var(--doc-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 1.125rem;
}

.doc-crumbs {
  font-family: var(--doc-body);
  font-size: 0.688rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--doc-amber-text);
  margin-bottom: 1.125rem;
}
.doc-crumbs a { color: inherit; }

/* ── Prose ──────────────────────────────────────────────────────────────── */

h1, h2, h3, h4, h5, h6 { font-family: var(--doc-display); font-weight: 600; }
.doc-main h1 {
  font-size: 2.375rem;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1.35rem;
}
.doc-main h2 {
  font-size: 1.5rem;
  line-height: 1.28;
  letter-spacing: -0.015em;
  margin: 2.5rem 0 0.75rem;
}
.doc-main h3 { font-size: 1.25rem; line-height: 1.3; margin: 2rem 0 0.65rem; }
.doc-main h4 { font-size: 1.125rem; margin: 1.65rem 0 0.5rem; }
/* A head's level follows the depth of its div, so chapter prose reaches h5
   and h6, which the browser would otherwise set *below* body size. The scale
   bottoms out at the body's 1.0625rem: the last level parts company with the
   text by tracking and colour instead of by shrinking below it. */
.doc-main h5 { font-size: 1.0625rem; line-height: 1.35; margin: 1.5rem 0 0.45rem; }
.doc-main h6 {
  font-size: 0.9375rem;
  line-height: 1.4;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--doc-muted);
  margin: 1.4rem 0 0.4rem;
}
.doc-main p { margin: 0 0 1.15rem; }
/* Chapter navigation sits in two places, per the design: a full-width pair of
   cards after the last section, and a compact pair at the top of the right-hand
   rail, above "On this page" — the rail one stays reachable while scrolled, the cards work
   at any width and are the landing a finished chapter asks for. */
.chapter-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 4rem 0 0;
  padding-top: 2.5rem;
  border-top: 1px solid var(--doc-rule);
  font-family: var(--doc-body);
}
.chapter-nav a {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  padding: 1.125rem 1.25rem;
  border: 1px solid var(--doc-rule);
  border-radius: 5px;
  color: inherit;
  text-decoration: none;
}
.chapter-nav a:hover {
  border-color: var(--doc-amber);
  background: var(--doc-wash);
  text-decoration: none;
}
.chapter-nav a:focus-visible {
  outline: none;
  border-color: var(--doc-amber);
  box-shadow: 0 0 0 3px rgba(247, 168, 35, 0.22);
}
.chapter-nav__next { align-items: flex-end; text-align: right; }
.chapter-nav__label {
  font-size: 0.656rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--doc-muted);
}
.chapter-nav__prev .chapter-nav__label::before { content: "\2190\00a0"; }
.chapter-nav__next .chapter-nav__label::after { content: "\00a0\2192"; }
.chapter-nav__title {
  font-family: var(--doc-serif);
  font-size: 1.125rem;
  line-height: 1.3;
  color: var(--doc-ink);
}
.chapter-nav__num { color: var(--doc-amber-text); }
.chapter-nav__num:not(:empty)::after { content: "\00a0"; }
.chapter-nav a[href=""], .chapter-nav a:not([href]) {
  visibility: hidden;
  pointer-events: none;
}

/* Rail variant: no card, just the pair above the on-this-page list. */
.chapter-nav--rail {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  margin: 0 0 2.25rem;
  padding: 0;
  border-top: 0;
  font-size: 0.781rem;
}
.chapter-nav--rail a {
  gap: 0.188rem;
  padding: 0;
  border: 0;
  border-radius: 0;
}
.chapter-nav--rail a:hover { background: none; }
.chapter-nav--rail a:hover .chapter-nav__title { color: var(--doc-link-hover); }
.chapter-nav--rail a:focus-visible { box-shadow: 0 0 0 3px rgba(247, 168, 35, 0.22); }
.chapter-nav--rail .chapter-nav__next { align-items: flex-start; text-align: left; }
.chapter-nav--rail .chapter-nav__label {
  font-size: 0.625rem;
  letter-spacing: 0.09em;
}
.chapter-nav--rail .chapter-nav__title {
  font-family: inherit;
  font-size: 0.781rem;
  line-height: 1.35;
}
.chapter-nav--rail .chapter-nav__num { font-weight: 600; }
/* A chapter with no previous (or no next) leaves no gap in the rail. */
.chapter-nav--rail a[href=""], .chapter-nav--rail a:not([href]) { display: none; }
/* Nothing to separate from when the page has no headings to list. */
.doc-aside:has(> ul[hidden]) .chapter-nav--rail { margin: 0; }

.lead, .spec__lead {
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--doc-ink);
}
.lead:empty { display: none; }
/* The edition line sits under the title page, inside its bottom margin, and
   is gone when the header carries no editionStmt. */
.home-edition {
  margin: -2rem 0 2.5rem;
  text-align: center;
  font-family: var(--doc-body);
  font-size: 0.813rem;
  color: var(--doc-muted);
}
.home-edition:empty { display: none; }
.home > p {
  font-size: 1.1875rem;
  line-height: 1.55;
  margin: 0 0 1.5rem;
}
.title-page {
  text-align: center;
  margin: 2.5rem 0 3rem;
  font-family: var(--doc-serif);
}
.title-page__title {
  font-family: var(--doc-display);
  font-size: 2rem;
  line-height: 1.25;
  margin: 0.75rem 0 1rem;
}
.title-page__sub {
  margin: -0.5rem 0 1rem;
  font-size: 1.05rem;
  font-style: italic;
  color: var(--doc-muted);
}
.title-page__sub:empty { display: none; }
.title-page__byline, .title-page__imprint { color: var(--doc-muted); }
.muted { color: var(--doc-muted); }

/* Top-level headed divs are the chapter's sections. Space and a hairline live
   on the wrapper so they are not collapsed away from the preceding paragraph
   (the heading is the wrapper's first child). The chapter <article> itself is
   not a section of itself. */
.doc-main .doc-chapter > .tei-div:has(> .tei-head) {
  margin-top: 2.5rem;
  padding-top: 1.65rem;
  border-top: 1px solid var(--doc-rule);
}
/* Subsections below that get neither rule nor padding: the wrapper margin is
   only a floor, and the heading's own margin collapses into it. */
.doc-main .doc-chapter > .tei-div .tei-div:has(> .tei-head) {
  margin-top: 2rem;
  padding-top: 0;
  border-top: 0;
}
/* Only the padded wrapper above needs its heading's margin zeroed — padding
   stops that margin collapsing, so it would otherwise add to the rule gap.
   Deeper headings keep their margin; without it they sat flush against the
   preceding paragraph. */
.doc-main .doc-chapter > .tei-div > .tei-head:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}
.doc-main .tei-p { margin: 0 0 1.15rem; }
.doc-main .tei-list { margin: 1.25rem 0 1.5rem; padding-left: 1.25rem; }
.doc-main ul, .doc-main ol { margin: 0 0 1.35rem; padding-left: 1.4rem; }
.doc-main li { margin: 0.35rem 0; }
/* A specList is a glossary, not an enumeration: the tag opening each entry is
   marker enough, so drop the bullet and let the entries run full width. */
.doc-main .tei-specList { list-style: none; padding-left: 0; margin: 1.5rem 0 1.75rem; }
.doc-main .tei-specList > li { margin: 0.85rem 0; line-height: 1.55; }
/* Footnotes. The runtime appends one dl per note to the end of the chapter, so
   the group has no wrapper: the rule above the block comes from the first note
   that follows ordinary prose. */
.doc-main a.note {
  font-family: var(--doc-body);
  font-size: 0.7em;
  font-weight: 600;
  vertical-align: super;
  line-height: 0;
  padding-left: 0.1em;
}
.doc-main .footnote {
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  margin: 0.65rem 0 0;
  font-family: var(--doc-body);
  font-size: 0.844rem;
  line-height: 1.6;
  color: var(--doc-muted);
}
.doc-main > *:not(.footnote) + .footnote,
.doc-main .doc-chapter > *:not(.footnote) + .footnote {
  margin-top: 2.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--doc-rule);
}
.doc-main .footnote .fn-number {
  font-weight: 600;
  color: var(--doc-amber-text);
}
.doc-main .footnote .fn-content { margin: 0; }
.doc-main .footnote .fn-back { margin-left: 0.4rem; text-decoration: none; }

/* Tables in running prose. TEI gives rows a role rather than a thead, so the
   header is a `row-label` tr of plain cells: it takes the same uppercase sans
   label as a spec section heading. Cells align on the baseline so a wrapping
   cell does not push its neighbours off the first line, and the first and last
   columns keep the text margin instead of padding away from it. */
.doc-main .tei-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0 2.25rem;
  font-family: var(--doc-body);
  font-size: 0.875rem;
  line-height: 1.5;
}
.doc-main .tei-table th,
.doc-main .tei-table td {
  padding: 0.55rem 1.25rem 0.55rem 0;
  text-align: left;
  vertical-align: baseline;
  border-bottom: 1px solid var(--doc-rule);
}
.doc-main .tei-table th:last-child,
.doc-main .tei-table td:last-child { padding-right: 0; }
.doc-main .tei-table tr:last-child td { border-bottom: 0; }
.doc-main .tei-table th,
.doc-main .tei-table .row-label td {
  font-family: var(--doc-body);
  font-size: 0.688rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--doc-muted);
}
.doc-main .tei-table caption {
  caption-side: top;
  text-align: left;
  font-size: 0.688rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--doc-muted);
  margin-bottom: 0.625rem;
}

/* Gloss lists: a term over its definition, not a browser dl with a 40px hang. */
.doc-main dl.tei-list {
  margin: 1.5rem 0 1.75rem;
  padding-left: 0;
}
.doc-main dl.tei-list > dt {
  margin: 1.125rem 0 0.2rem;
  font-weight: 600;
}
.doc-main dl.tei-list > dt:first-of-type { margin-top: 0; }
.doc-main dl.tei-list > dd { margin: 0 0 0 1.5rem; }

.doc-main blockquote {
  margin: 1.65rem 0;
  padding: 0.25rem 0 0.25rem 1.25rem;
  border-left: 3px solid var(--doc-rule);
  color: var(--doc-muted);
}

/* ── Inline conventions ─────────────────────────────────────────────────────
   Literal XML is mono, a place in the document is sans, a concept stays serif;
   amber marks only what is clickable. */

/* Element reference: mono, amber, brackets kept so it reads as a tag. */
.doc-main a.tei-gi,
.doc-main .specList-elementSpec {
  font-family: var(--doc-mono);
  font-size: 0.88em;
  color: var(--doc-tag);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--doc-amber) 45%, transparent);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
.doc-main a.tei-gi::before,
.doc-main .specList-elementSpec::before { content: "<"; }
.doc-main a.tei-gi::after,
.doc-main .specList-elementSpec::after { content: ">"; }
.doc-main a.tei-gi:hover {
  color: var(--doc-ink);
  text-decoration-color: currentColor;
}

/* Attribute reference: same mono, but ink not amber, so it never reads as an element. */
.doc-main .tei-att {
  font-family: var(--doc-mono);
  font-size: 0.88em;
  color: var(--doc-val);
}
.doc-main a.tei-att {
  text-decoration: underline;
  text-decoration-color: var(--doc-rule);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
.doc-main a.tei-att:hover { color: var(--doc-ink); text-decoration-color: currentColor; }

/* Class and datatype names: long and dotted, so a tinted ground rather than a rule. */
.doc-main .tei-ident,
.doc-main .tei-dataRef,
.doc-main .specList-classSpec,
.doc-main .specList-macroSpec,
.doc-main .specList-dataSpec {
  font-family: var(--doc-mono);
  font-size: 0.86em;
  color: var(--doc-tag);
  background: var(--doc-code-bg);
  border-radius: 0.19rem;
  padding: 0.06em 0.31em;
}

/* Literal values the encoder types verbatim: mono, ink, tinted, never a link. */
.doc-main .tei-val,
.doc-main .tei-code,
.doc-main .tei-tag {
  font-family: var(--doc-mono);
  font-size: 0.86em;
  color: var(--doc-val);
  background: var(--doc-code-bg);
  border-radius: 0.19rem;
  padding: 0.06em 0.31em;
}
.doc-main .tei-tag::before { content: "<"; }
.doc-main .tei-tag::after { content: ">"; }

/* Term, defining occurrence: a concept, so it stays in the serif. Not a link. */
.doc-main .tei-term {
  font-style: italic;
  color: inherit;
  border-bottom: 1px dotted var(--doc-amber);
  padding-bottom: 1px;
}
.doc-main .tei-mentioned { font-style: italic; }
.doc-main .tei-soCalled::before, .doc-main .tei-soCalled::after { content: "\201c"; }
.doc-main .tei-soCalled::after { content: "\201d"; }
.doc-main .tei-foreign { font-style: italic; }

/* Section cross-reference: a place in the document, so it leaves the serif. The
   canvas marks these with an amber section number, which generated ptr labels do
   not always carry — hence a rule beneath, so they still read as clickable. */
.doc-main a.tei-ptr,
.doc-main a.tei-ref:not([href^="http"]) {
  font-family: var(--doc-body);
  font-size: 0.9em;
  color: var(--doc-ink);
  text-decoration: underline;
  text-decoration-color: var(--doc-rule);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.doc-main a.tei-ptr:hover,
.doc-main a.tei-ref:not([href^="http"]):hover {
  color: var(--doc-ink);
  text-decoration-color: var(--doc-amber);
}

/* External link: leaves the site, so it earns a marker. */
.doc-main a.tei-ref[href^="http"],
.doc-main a[rel~="external"] {
  font-family: var(--doc-body);
  font-size: 0.85em;
  color: var(--doc-amber-text);
  text-decoration: underline;
  text-decoration-color: var(--doc-amber);
  text-underline-offset: 3px;
}
.doc-main a.tei-ref[href^="http"]::after,
.doc-main a[rel~="external"]::after { content: "\202f\2197"; }

.doc-main .tei-gloss { color: var(--doc-muted); }
.doc-main .tei-q, .doc-main .inline-quote { font-style: normal; }

/* ── Code and examples ──────────────────────────────────────────────────── */

pre.code, .egXML, .tei-eg,
.doc-main pre.code, .doc-main .egXML, .doc-main .tei-eg {
  margin: 1.65rem 0 1.85rem;
  font-family: var(--doc-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--doc-val);
  background: var(--doc-code-bg);
  border: 1px solid var(--doc-rule);
  border-radius: 0.31rem;
  padding: 1.15rem 1.25rem;
  overflow-x: auto;
  white-space: pre-wrap;
}
.egXML .p { color: var(--doc-muted); }           /* Punctuation */
.egXML .nt { color: var(--doc-tag); }            /* Name.Tag */
.egXML .na { color: var(--doc-attr); }           /* Name.Attribute */
.egXML .s, .egXML .s2 { color: var(--doc-val); } /* String */
.egXML .c, .egXML .c1, .egXML .cm { color: var(--doc-muted); font-style: italic; }
.egXML .cp { color: var(--doc-muted); }          /* Comment.Preproc / PI */

.doc-figure { margin: 0 0 1.875rem; }
.doc-figure figcaption,
.doc-label {
  font-family: var(--doc-body);
  font-size: 0.688rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--doc-muted);
  margin-bottom: 0.625rem;
}

/* ── Reference pages ────────────────────────────────────────────────────── */

.spec__ident {
  font-family: var(--doc-mono);
  font-weight: 500;
  font-size: 2.5rem;
  letter-spacing: -0.03em;
  color: var(--doc-ink);
}
.spec > h1 { margin: 0 0 0.625rem; }
.spec__gloss {
  display: block;
  margin: 0 0 1.625rem;
  font-family: var(--doc-body);
  font-size: 1.063rem;
  font-style: normal;
  font-weight: 400;
  color: var(--doc-muted);
}
.spec__lead { margin: 0 0 1.25rem; }
.spec__chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 2.75rem;
  font-family: var(--doc-body);
  font-size: 0.781rem;
}
.spec__chip {
  padding: 0.31rem 0.69rem;
  border-radius: 999px;
  background: var(--doc-wash);
  border: 1px solid var(--doc-rule);
  color: var(--doc-ink);
}
/* A chip that leaves the site keeps the pill: it takes the arrow from the
   external-link rule above, but none of its inline type or underline. */
.doc-main a.spec__chip,
.doc-main a.spec__chip[rel~="external"] {
  font-family: inherit;
  font-size: inherit;
  color: var(--doc-ink);
  text-decoration: none;
}
a.spec__chip:hover { border-color: var(--doc-amber); color: var(--doc-ink); text-decoration: none; }
.spec__chip strong { font-weight: 600; }
/* A moduleSpec met in running prose, rather than the block under a spec title. */
.spec__chips--inline { margin: 1.5rem 0 1.75rem; }
.spec__chip__desc:not(:empty)::before { content: "\00a0\2014\00a0"; }

.spec-section { margin: 0 0 3.25rem; }
.spec-section > h2 {
  font-family: var(--doc-body);
  font-size: 0.688rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--doc-muted);
  margin: 0 0 1.375rem;
  padding: 0 0 0.75rem;
  border: 0;
  border-bottom: 1px solid var(--doc-rule);
}
.spec-note {
  font-family: var(--doc-body);
  font-size: 0.844rem;
  line-height: 1.6;
  color: var(--doc-muted);
  margin: 0 0 1.625rem;
}

/* Attribute definitions: the name and its gloss on one line, the facts beneath. */
.att-def {
  margin: 0 0 1.625rem;
  display: grid;
  gap: 0.625rem;
}
.att-def dt {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-family: var(--doc-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--doc-tag);
}
.att-def > dd { margin: 0; }
.att-def dt > .tei-desc,
.att-def dt > span:not(.att-def__name) {
  font-family: var(--doc-body);
  font-size: 0.906rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--doc-ink);
}
.att-def dd dl {
  margin: 0.625rem 0 0;
  display: grid;
  grid-template-columns: 6.625rem minmax(0, 1fr);
  font-family: var(--doc-body);
  font-size: 0.813rem;
  border-top: 1px solid var(--doc-rule);
}
.att-def dd dl dt {
  display: block;
  font-family: var(--doc-body);
  font-size: 0.813rem;
  font-weight: 400;
  color: var(--doc-muted);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--doc-rule);
}
.att-def dd dl dd {
  margin: 0;
  padding: 0.5rem 0;
  line-height: 1.6;
  border-bottom: 1px solid var(--doc-rule);
}
/* An attribute's values, nested in the Status/Datatype list. */
.att-def dd dl.val-list {
  margin: 0;
  border-top: 0;
  grid-template-columns: max-content minmax(0, 1fr);
  column-gap: 1rem;
}
.att-def dd dl.val-list dt,
.att-def dd dl.val-list dd {
  padding: 0.25rem 0;
  border-bottom: 0;
}
.att-def dd dl.val-list dt { color: var(--doc-ink); }
.att-def dd dl.val-list code { font-family: var(--doc-mono); }

.att-class {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.5rem;
  margin: 0.35rem 0;
  font-family: var(--doc-body);
  font-size: 0.844rem;
}
.att-class__nested { flex: 1 1 100%; margin-left: 1rem; }
.att-class s { color: var(--doc-muted); }
/* The class name takes the class treatment, its attributes the attribute one. */
.att-class > a:first-child {
  font-family: var(--doc-mono);
  font-size: 0.813rem;
  color: var(--doc-tag);
  background: var(--doc-code-bg);
  border-radius: 0.19rem;
  padding: 0.06em 0.31em;
}
.att-class a:not(:first-child), .att-class s {
  font-family: var(--doc-mono);
  font-size: 0.813rem;
  color: var(--doc-val);
}

/* Classes and content: a label column against a value column. */
.spec-facts {
  display: grid;
  grid-template-columns: 6.625rem minmax(0, 1fr);
  gap: 1.25rem;
  font-family: var(--doc-body);
  font-size: 0.844rem;
  line-height: 1.7;
}
.spec-facts > dt { color: var(--doc-muted); margin: 0; }
.spec-facts > dd {
  margin: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.module-group { display: flex; flex-wrap: wrap; gap: 0.31rem; align-items: baseline; }
.module-group h4 {
  flex: none;
  width: 6.625rem;
  margin: 0;
  font-family: var(--doc-body);
  font-size: 0.656rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--doc-amber-text);
}
.module-group ul {
  display: flex; flex-wrap: wrap; gap: 0.25rem;
  list-style: none; margin: 0; padding: 0; min-width: 0;
}
.module-group li { margin: 0; }
.module-group a, .spec-links a {
  font-family: var(--doc-mono);
  font-size: 0.75rem;
  padding: 0.06rem 0.38rem;
  border-radius: 0.19rem;
  color: var(--doc-val);
}
.module-group a:hover, .spec-links a:hover {
  background: var(--doc-code-bg);
  color: var(--doc-link);
  text-decoration: none;
}
.spec-links { display: flex; flex-wrap: wrap; gap: 0.25rem; }

/* Processing model listing. */
.pm { list-style: none; margin: 0; padding: 0; font-family: var(--doc-body); font-size: 0.875rem; }
.pm__item { margin: 0 0 0.85rem; padding: 0 0 0.75rem; border-bottom: 1px dashed var(--doc-rule); }
.pm__item:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: 0; }
.pm .pm { margin: 0.5rem 0 0 1rem; }
.pm__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.35rem 0.6rem; }
.pm__kind {
  font-size: 0.656rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--doc-muted);
}
.pm__behaviour { font-family: var(--doc-mono); font-size: 0.813rem; color: var(--doc-tag); }
.pm__output, .pm__class { color: var(--doc-muted); font-size: 0.9em; }
.pm__pred {
  display: block; flex: 1 1 100%;
  font-family: var(--doc-mono); font-size: 0.75rem; color: var(--doc-muted);
}
.pm__desc { margin: 0.35rem 0 0; }
.pm__params {
  display: grid; grid-template-columns: max-content 1fr;
  gap: 0.15rem 0.8rem; margin: 0.4rem 0 0;
}
.pm__params dt { font-family: var(--doc-mono); font-size: 0.75rem; color: var(--doc-muted); }
.pm__params dd { margin: 0; }
.pm__template { margin: 0.4rem 0 0; }

/* A model need not carry a template, a description, parameters, an output or a
   predicate, but the tagdocs template emits every wrapper unconditionally, so an
   absent one arrives as an empty element. An empty pre.code is the visible one:
   it keeps its border, background and ~1.75rem margins and reads as a broken
   code block. The rest are flex children of .pm__head, where each empty one
   still claims its 0.6rem gap. */
.pm__template:has(> code:empty),
.pm__desc:empty,
.pm__params:empty,
.pm__head > :empty { display: none; }

/* A callout for the pointer back to the reference section. */
.doc-callout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  margin: 2.25rem 0 0;
  padding: 1.125rem 1.25rem;
  border: 1px dashed var(--doc-rule);
  border-radius: 0.31rem;
  font-family: var(--doc-body);
  font-size: 0.906rem;
  line-height: 1.6;
  color: var(--doc-muted);
}
.doc-callout__label {
  font-size: 0.656rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--doc-amber-text);
  padding-top: 0.12rem;
}

/* ── Catalogs and home ──────────────────────────────────────────────────── */

.doc-main .catalog__list { columns: 2; column-gap: 2rem; list-style: none; padding: 0; }
.doc-main .catalog__list li {
  break-inside: avoid;
  margin: 0.15rem 0;
  font-family: var(--doc-body);
  font-size: 0.875rem;
}
.doc-main .catalog__list a { font-family: var(--doc-mono); font-size: 0.813rem; }
/* Letter buckets are signposts, not sections: no rule above them. */
.catalog h2 {
  font-family: var(--doc-mono);
  font-size: 1.125rem;
  color: var(--doc-amber-text);
  margin: 2.25rem 0 0.75rem;
  padding-top: 0;
  border-top: 0;
}
.catalog h2:first-of-type { margin-top: 1rem; }
.doc-main .toc { list-style: none; padding: 0; font-family: var(--doc-body); font-size: 0.938rem; }
.doc-main .toc li { margin: 0.35rem 0; }
/* Outline labels — "1.2.1", "iv.1.", "Appendix A" — opening a heading or a
   table-of-contents entry. Per the design the label is not part of the
   heading's own voice: it stays small and sans at one fixed size whatever the
   heading does, marked in amber, on the heading's baseline. */
.heading-number {
  margin-right: 0.875rem;
  font-family: var(--doc-body);
  font-size: 0.813rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  text-transform: none;
  color: var(--doc-amber-text);
}
.heading-number:empty { display: none; }
/* A chapter's own label opens the page instead, as the line above the title. */
.doc-main h1 > .heading-number {
  display: block;
  font-size: 0.688rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 1.125rem;
}
/* In a table of contents the label is part of the entry rather than a mark
   beside it, so it takes the entry's size — but keeps the amber it has in a
   heading, so a number reads as a number wherever it appears. */
.doc-main .toc .heading-number {
  margin-right: 0.4em;
  font-size: inherit;
  font-weight: 500;
}
.doc-main .toc .toc { margin: 0.15rem 0 0.35rem; padding-left: 1.25rem; }
.doc-main .toc .toc li { margin: 0.2rem 0; font-size: 0.875rem; }

.spec-table { width: 100%; border-collapse: collapse; font-family: var(--doc-body); font-size: 0.875rem; }
.spec-table th, .spec-table td {
  vertical-align: top;
  padding: 0.65rem 0.75rem;
  border-top: 1px solid var(--doc-rule);
  text-align: left;
}
.spec-table th { width: 9.5rem; color: var(--doc-muted); font-weight: 600; }
.spec-table td code { font-family: var(--doc-mono); font-size: 0.813rem; }

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 1180px) {
  /* No room for "On this page": its column goes. */
  .doc .opm-layout { --opm-layout-after-track: 0px; }
  .doc .opm-layout > .after { display: none; }
  .doc-main { padding: 3rem 2rem 6rem; }
}
/* Narrow screens: the layout slides the navigation in as a drawer, opened
   from the bar above the page. */
@media (max-width: 64em) {
  .doc .menubar .trigger label {
    font-size: 0.813rem;
    font-weight: 600;
    color: var(--doc-amber-text);
  }
  .doc .opm-drawer__head {
    padding: 0.75rem 1.25rem 0;
    font-family: var(--doc-body);
    font-size: 0.813rem;
    color: var(--doc-muted);
  }
  .doc .opm-drawer__title {
    font-weight: 600;
    color: var(--doc-amber-text);
  }
  .doc-sidebar { border-right: 0; }
}
@media (max-width: 860px) {
  /* One card per row; a missing previous/next collapses instead of leaving a hole. */
  .chapter-nav { grid-template-columns: minmax(0, 1fr); }
  .chapter-nav a[href=""], .chapter-nav a:not([href]) { display: none; }
  .doc-edition { display: none; }
  /* Logo and buttons share the first row; the search field takes the second. */
  .doc .menubar { flex-wrap: wrap; gap: 0.75rem 1rem; padding: 0.75rem 1.25rem; }
  .doc .menubar > ul:first-child { flex: 1 1 auto; }
  .doc .menubar > ul:last-child { display: contents; }
  .doc .menubar > ul:last-child > li { order: 2; }
  .doc-search { order: 3 !important; flex: 1 1 100%; width: auto; }
  .doc-main { padding: 2.25rem 1.25rem 4.5rem; }
  .doc-main h1 { font-size: 2.125rem; }
  .spec__ident { font-size: 1.875rem; }
  .doc-main .catalog__list { columns: 1; }
  .spec-facts, .att-def dd dl { grid-template-columns: minmax(0, 1fr); gap: 0.25rem; }
  .module-group h4 { width: auto; }
}

@media print {
  .doc-sidebar, .doc-aside, .doc-footer, .chapter-nav { display: none !important; }
  .doc-main { max-width: none; padding: 0; }
  body.doc { background: #fff; }
}