/* Rules changelog (/changelog/). Builds on site.css: colours, type and the
   dark hero band come from there. */
.changelog-page { padding: 0; }
.changelog-page > .changelog-wrap {
  padding-block: clamp(2rem, 5vw, 3rem) clamp(3rem, 6vw, 5rem);
  display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); gap: 2rem clamp(1.5rem, 4vw, 3.5rem); align-items: start;
}
.changelog-hero .lede { max-width: 44rem; }
.changelog-stats, .changelog-about { grid-column: 1 / -1; }
.changelog-stats { padding-bottom: 0.5rem; }
.changelog-stats dd.d { font-size: var(--step-1); line-height: 1.3; letter-spacing: -0.01em; padding-top: 0.6rem; }
.changelog-about p { margin: 0 0 0.6rem; color: var(--muted); }

.release-index { position: sticky; top: 5.5rem; padding: 1.25rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.release-index h2 { font: 600 0.8125rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 0.75rem; }
.release-index ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.1rem; }
.release-index a { display: inline-flex; align-items: center; min-height: 32px; font: 600 0.9375rem/1.2 var(--mono); text-decoration: none; }
.release-index a:hover { text-decoration: underline; }
.release-index time { display: block; font-size: var(--step--1); color: var(--muted); margin-top: -0.3rem; margin-bottom: 0.3rem; }

.releases { display: grid; gap: 1.25rem; min-width: 0; }
.release {
  padding: clamp(1.25rem, 3vw, 1.75rem); background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); display: grid; gap: 0.9rem; scroll-margin-top: 5.5rem;
}
.release:first-child { box-shadow: var(--shadow); }
.release-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 0.25rem 1rem; }
.release-head h2 { margin: 0; font-size: var(--step-2); font-weight: 700; line-height: 1.15; display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; }
.release-head h2 .tag { font-family: var(--body); letter-spacing: 0; }
.release-date { margin: 0; font: 500 0.875rem/1.2 var(--mono); color: var(--muted); }
.release-summary { margin: 0; font-size: var(--step-1); line-height: 1.5; max-width: 50rem; }
.release-tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.release-files { margin: 0; color: var(--muted); font-size: 0.9375rem; }

.change-group h3 { margin: 0.4rem 0 0.6rem; font-size: 1.0625rem; display: flex; align-items: center; gap: 0.5rem; }
.change-group h3 .n { font: 500 0.75rem/1 var(--mono); color: var(--muted); background: var(--surface-2); padding: 0.3rem 0.5rem; border-radius: 99px; }
.change-list { list-style: none; margin: 0; padding: 0; display: grid; }
.change {
  display: grid; grid-template-columns: 5.4rem minmax(0, 1fr); gap: 0.75rem; align-items: baseline;
  padding: 0.7rem 0; border-top: 1px solid var(--line);
}
.change .rule-id { font: 500 0.8125rem/1.2 var(--mono); color: var(--muted); }
.change-body { min-width: 0; display: grid; gap: 0.2rem; }
.change-body p { margin: 0; }
.change-body .t { font-weight: 600; line-height: 1.4; }
.change-body .t .tag { margin-left: 0.3rem; vertical-align: 0.1em; padding: 0.25rem 0.5rem; }
.change-body .d { font-size: var(--step--1); color: var(--muted); overflow-wrap: anywhere; }
.change-fields { margin: 0.2rem 0 0; padding-left: 1.1rem; font-size: 0.9375rem; display: grid; gap: 0.15rem; overflow-wrap: anywhere; }

.change-more { border: 1px dashed var(--line); border-radius: 12px; }
.change-more summary {
  cursor: pointer; min-height: 44px; padding: 0.7rem 1rem; display: flex; align-items: center;
  font-weight: 600; color: var(--seal);
}
.change-more summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 12px; }
.change-more[open] summary { border-bottom: 1px solid var(--line); }
.change-more .change-list { padding: 0 1rem; }
.change-more .change:first-child { border-top: 0; }

@media (max-width: 56rem) {
  .changelog-page > .changelog-wrap { grid-template-columns: minmax(0, 1fr); }
  .release-index { position: static; }
  .release-index ol { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
  .release-index time { display: none; }
}
@media (max-width: 36rem) {
  .change { grid-template-columns: minmax(0, 1fr); gap: 0.2rem; }
}
@media print {
  .changelog-hero, .release-index { display: none !important; }
  .release { break-inside: avoid-page; border-color: #999999; box-shadow: none; }
  .change-more > .change-list { display: grid !important; }
}