/* Docs + changelog — layered on top of /styles.css.
   Black-and-white spine, mint as accent only, 12px radius across.
   No backdrop blur. No drop shadows. */

.brand-back {
  gap: 10px; padding: 4px 4px 4px 2px;
  border-radius: var(--radius-sm);
  transition: background-color 0.12s;
}
.brand-back:hover { background: rgba(10,10,11,0.04); }
.brand-back .back-arrow {
  width: 18px; height: 18px;
  color: var(--slate);
  transition: color 0.12s, transform 0.12s;
}
.brand-back:hover .back-arrow { color: var(--ink); transform: translateX(-2px); }

.docs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 18px var(--gutter);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.docs-nav { display: flex; gap: 18px; align-items: center; }
.dh-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--slate);
  padding: 8px 4px;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}
.dh-link:hover { color: var(--ink); }
.dh-link.is-active { color: var(--ink); border-bottom-color: var(--ink); }

.docs-page {
  max-width: 880px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px) var(--gutter);
}
.docs-page-wide { max-width: 1180px; }

/* ── Hero — clean white surface, heroic h1. */
.docs-hero {
  padding: clamp(8px, 2vw, 16px) 0 clamp(28px, 4vw, 44px);
  margin-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--line);
}
.docs-hero h1 {
  font-size: clamp(40px, 6.5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 16px;
  color: var(--ink);
}
.docs-lead {
  color: var(--slate);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.55;
  max-width: 56ch;
  margin-bottom: 22px;
}

.docs-search-wrap { position: relative; max-width: 520px; }
.docs-search {
  width: 100%;
  padding: 13px 16px;
  font: inherit;
  font-size: 14.5px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  outline: none;
  transition: border-color 0.14s;
}
.docs-search::placeholder { color: var(--mute); }
.docs-search:focus {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

.docs-search-results {
  position: absolute;
  top: calc(100% + 6px); left: 0; right: 0;
  background: var(--surface);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  max-height: 60vh;
  overflow-y: auto;
  z-index: 20;
  padding: 4px;
  color: var(--ink);
}
.ds-row {
  display: flex; flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
}
.ds-row:hover { background: var(--bg); }
.ds-row .ds-kind {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}
.ds-row .ds-title { font-size: 14px; font-weight: 600; color: inherit; }
.ds-row .ds-snippet {
  font-size: 12.5px; color: var(--slate);
  line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.ds-empty { padding: 14px 12px; color: var(--slate); font-size: 13px; }

/* ── Index groups + grid. */
.docs-group + .docs-group { margin-top: 36px; }
.docs-group-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 14px;
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
}

/* Doc card — flat white with hairline. */
.doc-card {
  position: relative;
  display: flex; align-items: flex-start; gap: 16px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.14s;
  overflow: hidden;
}
.doc-card:hover { border-color: var(--ink); }

.doc-card-icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--ink);
  display: inline-flex; align-items: center; justify-content: center;
  transition: background-color 0.14s, color 0.14s;
}
.doc-card-icon svg { width: 18px; height: 18px; }
.doc-card:hover .doc-card-icon { background: var(--ink); color: var(--mint); }

.doc-card-text { flex: 1; min-width: 0; }
.doc-card-head {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 4px;
  padding-right: 22px;
}
.doc-card-head h3 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.018em;
  flex: 1;
  min-width: 0;
  color: var(--ink);
}
.doc-card-desc {
  font-size: 13.5px;
  color: var(--slate);
  line-height: 1.55;
}
.doc-card-arrow {
  position: absolute;
  top: 24px; right: 22px;
  font-size: 14px;
  color: var(--mute);
  transition: color 0.14s, transform 0.14s;
}
.doc-card:hover .doc-card-arrow { color: var(--ink); transform: translateX(3px); }

/* ── Doc detail page. */
.docs-page-doc { max-width: 1180px; }
.docs-page-doc .doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 56px;
}
.docs-page-doc.has-toc .doc-layout {
  grid-template-columns: minmax(0, 1fr) 220px;
}
@media (max-width: 960px) {
  .docs-page-doc.has-toc .doc-layout { grid-template-columns: 1fr; }
}

.doc-toc {
  position: sticky;
  top: 80px;
  align-self: start;
  max-height: calc(100dvh - 100px);
  overflow-y: auto;
  padding-left: 18px;
  border-left: 1px solid var(--line);
  font-size: 13px;
}
@media (max-width: 960px) { .doc-toc { display: none; } }
.doc-toc-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 12px;
}
.doc-toc-list { list-style: none; padding: 0; margin: 0; }
.doc-toc-list li { line-height: 1.5; margin-bottom: 6px; }
.doc-toc-list .doc-toc-l3 { padding-left: 14px; }
.doc-toc-list a {
  color: var(--slate);
  text-decoration: none;
  display: block;
  padding: 2px 0;
  border-left: 2px solid transparent;
  margin-left: -10px;
  padding-left: 8px;
  transition: color 0.12s, border-color 0.12s;
}
.doc-toc-list a:hover { color: var(--ink); }
.doc-toc-list a.is-active {
  color: var(--ink);
  border-left-color: var(--ink);
  font-weight: 600;
}

.doc-crumbs {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}
.doc-crumbs a { color: var(--slate); }
.doc-crumbs a:hover { color: var(--ink); }

.doc-article-head {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.doc-article-head h1 {
  font-size: clamp(34px, 4.8vw, 48px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 12px;
  color: var(--ink);
}
.doc-article-desc {
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--slate);
  line-height: 1.55;
  max-width: 60ch;
}

.doc-article-body { font-size: 16px; line-height: 1.74; color: var(--slate); }
.doc-article-body p { margin: 0 0 16px; }
.doc-article-body h2 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 40px 0 14px;
  scroll-margin-top: 80px;
  position: relative;
}
.doc-article-body h3 {
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 28px 0 10px;
  scroll-margin-top: 80px;
  position: relative;
}
.doc-article-body h2 .anchor,
.doc-article-body h3 .anchor {
  display: inline-block;
  margin-left: 8px;
  color: var(--mute);
  text-decoration: none;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.14s, color 0.14s;
}
.doc-article-body h2:hover .anchor,
.doc-article-body h3:hover .anchor { opacity: 1; }
.doc-article-body h2 .anchor:hover,
.doc-article-body h3 .anchor:hover { color: var(--ink); }

.doc-article-body strong { color: var(--ink); font-weight: 700; }
.doc-article-body a {
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  transition: border-color 0.12s, color 0.12s;
}
.doc-article-body a:hover { border-bottom-color: var(--ink); }

.doc-article-body ul, .doc-article-body ol { margin: 0 0 16px 24px; }
.doc-article-body li { margin-bottom: 6px; }
.doc-article-body code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  padding: 2px 6px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.doc-article-body pre {
  background: var(--ink);
  color: #fff;
  padding: 18px 20px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  margin: 18px 0;
}
.doc-article-body pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: inherit;
  color: inherit;
}
.doc-article-body blockquote {
  border-left: 3px solid var(--ink);
  padding: 4px 16px;
  margin: 18px 0;
  color: var(--slate);
  font-style: italic;
}
.doc-article-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 18px 0;
  font-size: 14px;
}
.doc-article-body th {
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  padding: 10px 12px;
  text-align: left;
}
.doc-article-body td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--slate);
}
.doc-article-body img {
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  margin: 18px 0;
}
.doc-article-body hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }

/* In-content link to an /app/ page renders as a chip pill. */
.doc-article-body a.app-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 10px;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius-sm);
  border: 0;
  font-weight: 600;
  font-size: 13.5px;
}
.doc-article-body a.app-link:hover {
  background: var(--mint); color: var(--ink);
}

/* ── Changelog. */
.changelog-page { max-width: 800px; }
.changelog-filters {
  display: flex; gap: 6px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.cl-filter {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--slate);
  cursor: pointer;
  text-transform: capitalize;
  transition: background-color 0.14s, color 0.14s, border-color 0.14s;
}
.cl-filter:hover { color: var(--ink); border-color: var(--ink); }
.cl-filter.is-active {
  background: var(--ink); color: #fff;
  border-color: var(--ink);
}
.cl-filter .cl-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mute);
  font-weight: 500;
}
.cl-filter.is-active .cl-count { color: rgba(255,255,255,0.6); }

.cl-timeline {
  position: relative;
  padding-left: 22px;
}
.cl-timeline::before {
  content: "";
  position: absolute;
  top: 8px; bottom: 8px; left: 0;
  width: 1px;
  background: var(--line);
}
.cl-entry { position: relative; margin-bottom: 24px; }
.cl-dot {
  position: absolute;
  left: -7px; top: 12px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 3px solid var(--bg);
  z-index: 1;
}
.cl-dot-added    { background: var(--mint); }
.cl-dot-improved { background: var(--mint); }
.cl-dot-changed  { background: var(--ink); }
.cl-dot-fixed    { background: var(--ink); }
.cl-dot-removed  { background: var(--danger); }
.cl-dot-default  { background: var(--ink); }

.cl-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: border-color 0.14s;
}
.cl-card:hover { border-color: var(--ink); }

.cl-head { margin-bottom: 14px; }
.cl-head h2 {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 8px;
}
.cl-meta { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.cl-tag {
  display: inline-flex; align-items: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.cl-tag-added, .cl-tag-improved {
  background: var(--mint-soft);
  color: var(--mint-ink);
  border-color: var(--mint-deep);
}
.cl-tag-fixed { background: var(--bg); color: var(--ink); }
.cl-tag-removed { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.cl-date {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--slate);
  margin-left: auto;
  letter-spacing: 0.04em;
}

.cl-body { font-size: 15px; line-height: 1.7; color: var(--slate); }
.cl-body p { margin: 0 0 12px; }
.cl-body p:last-child { margin-bottom: 0; }
.cl-body strong { color: var(--ink); font-weight: 700; }
.cl-body ul { margin: 0 0 12px 22px; }
.cl-body li { margin-bottom: 4px; }

/* No-results state. */
.cl-empty {
  text-align: center;
  color: var(--slate);
  padding: 48px 22px;
  font-size: 14px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}