/* The spec page, from the signed-off sketch: the revision line, numbered
   clauses, the superseded-revision warning, and the sidebar's contents and
   revision list. */

/* clause anchors are inline, not headings, so they need their own offset */
.spec main [id] {
  scroll-margin-top: 96px;
}

.spec-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
  margin: 0 0 14px;
  font-family: var(--mono-font);
  font-size: .85rem;
  color: var(--ink-3);
}
.badge {
  font-family: var(--mono-font);
  font-size: .72rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--heading);
  background: var(--th-bg);
  border-radius: 999px;
  padding: 2px 9px;
}
.badge.superseded {
  color: var(--callout-edge);
  background: var(--callout-bg);
}

/* a clause: its number a link to itself, a rule marking normative text */
.spec main p:has(> .clause) {
  position: relative;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--line);
}
.spec main p:has(> .clause:hover), .spec main p:has(> .clause:focus-visible) {
  border-left-color: var(--accent);
}
.spec main p:has(> .clause:target) {
  border-left-color: var(--accent);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.clause {
  font-family: var(--mono-font);
  font-size: .86em;
  font-weight: 500;
  color: var(--heading);
  text-decoration: none;
  margin-right: .3em;
}
.clause:hover {
  text-decoration: underline;
}

/* the superseded-revision warning: a full frame, not only a left rule */
.superseded-note {
  display: flex;
  gap: 14px;
  margin: 22px 0 8px;
  padding: 16px 18px;
  background: var(--callout-bg);
  border: 1.5px solid var(--callout-edge);
  border-radius: var(--radius);
}
.superseded-note p {
  margin: .4em 0;
}
.superseded-note strong {
  color: var(--callout-edge);
}
/* the light accent falls short of 3:1 on this frame; the link colour does not */
.superseded-note :focus-visible {
  outline-color: var(--link);
}
.superseded-note .warn {
  flex: none;
  width: 24px;
  height: 24px;
  margin-top: 3px;
  fill: none;
  stroke: var(--callout-edge);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}
/* the corrections to a superseded revision, from SPEC-ERRATA.md */
.errata {
  margin-top: .9em;
  padding-top: .7em;
  border-top: 1px solid color-mix(in srgb, var(--callout-edge) 30%, transparent);
  font-size: .92em;
  color: var(--ink-2);
}
.errata ul, .errata ol {
  margin: .3em 0;
  padding-left: 1.2em;
}
.superseded-note .errata-label {
  margin: 0 0 .3em;
  font-family: var(--mono-font);
  font-size: .8em;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--callout-edge);
}
.to-current {
  display: inline-block;
  margin-top: 2px;
  padding: 6px 12px;
  border-radius: 6px;
  background: var(--callout-edge);
  color: var(--callout-bg);
  text-decoration: none;
  font-weight: 500;
}
.to-current:hover {
  filter: brightness(1.1);
}
.missing-clause {
  margin: 18px 0;
  padding: 10px 14px;
  border: 1px dashed var(--callout-edge);
  border-radius: var(--radius);
  color: var(--ink-2);
  font-size: .95em;
}

/* the sidebar: this page's sections, then every revision */
.revisions, .toc-spec, .toc-spec ol {
  list-style: none;
  padding: 0;
  margin: 0;
}
.revisions li {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.revisions a, .toc-spec a {
  display: block;
  padding: 4px 8px;
  margin-inline: -8px;
  border-radius: 6px;
  color: var(--ink-2);
  text-decoration: none;
}
.revisions a {
  display: flex;
  flex-direction: column;
  flex: 1;
}
.revisions small {
  font-size: .8em;
  color: var(--ink-3);
}
.revisions a[aria-current] {
  color: var(--heading);
  font-weight: 500;
}
.revisions a:hover, .toc-spec a:hover {
  color: var(--link);
  background: var(--surface);
}
.toc-spec > li > a {
  color: var(--ink);
}
.toc-spec ol {
  padding-left: 14px;
  margin: 0 0 4px 2px;
  border-left: 1px solid var(--line);
}
.toc-spec ol a {
  font-size: .93em;
}
.toc-spec a.on {
  color: var(--heading);
  background: var(--surface);
}
/* with the script, only the section being read shows its subsections */
.toc-spec.collapsible > li:not(.open) > ol {
  display: none;
}
.revisions-label {
  margin-top: 28px;
}

@media (max-width: 760px) {
  .drawer .revisions + .drawer-site {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
  }
}