/* Documentation layout. Design tokens and shared components live in base.css. */

.search-open {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 2.5rem;
  padding: 0 0.8rem;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-size: 0.92rem;
  cursor: pointer;
}
.search-open:hover {
  color: var(--foreground);
  background: var(--surface-2);
}
.search-open-text {
  display: none;
  min-width: 7rem;
  text-align: left;
}
@media (min-width: 720px) {
  .search-open-text {
    display: inline;
  }
}
.site-link {
  display: none;
}
@media (min-width: 900px) {
  .site-link {
    display: inline-flex;
  }
}
.nav-toggle {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  background: var(--surface);
  color: var(--foreground);
  cursor: pointer;
}
@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
}
.brand-tag {
  display: none;
}
@media (min-width: 560px) {
  .brand-tag {
    display: inline-block;
  }
}

/* ---------- three column shell ---------- */
.docs-shell {
  display: grid;
  gap: 2.5rem;
  padding-block: 2rem 4rem;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 1024px) {
  .docs-shell {
    grid-template-columns: 16.5rem minmax(0, 1fr);
  }
}
@media (min-width: 1280px) {
  .docs-shell {
    grid-template-columns: 16.5rem minmax(0, 1fr) 13.5rem;
  }
}

/* sidebar */
.docs-nav {
  font-size: 0.95rem;
}
.docs-nav .nav-section {
  margin: 1.4rem 0 0.4rem;
  padding-inline: 0.8rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}
.docs-nav .nav-section:first-child {
  margin-top: 0;
}
.docs-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.docs-nav a {
  display: block;
  padding: 0.42rem 0.8rem;
  border-radius: 0.6rem;
  color: var(--muted);
  text-decoration: none;
}
.docs-nav a:hover {
  color: var(--foreground);
  background: var(--surface-2);
}
.docs-nav a[aria-current="page"] {
  color: var(--foreground);
  font-weight: 600;
  background: color-mix(in srgb, var(--primary) 14%, transparent);
  box-shadow: inset 3px 0 0 var(--primary);
}
@media (max-width: 1023px) {
  .docs-nav {
    display: none;
    position: fixed;
    inset: 4rem 0 0 0;
    z-index: 30;
    overflow-y: auto;
    padding: 1.2rem 1.25rem 3rem;
    background: var(--background);
  }
  body.nav-open .docs-nav {
    display: block;
  }
  body.nav-open {
    overflow: hidden;
  }
}
@media (min-width: 1024px) {
  .docs-nav {
    position: sticky;
    top: 5.5rem;
    align-self: start;
    max-height: calc(100vh - 6.5rem);
    overflow-y: auto;
    padding-right: 0.5rem;
  }
}

/* table of contents */
.docs-toc {
  display: none;
  font-size: 0.88rem;
}
.docs-toc p {
  margin: 0 0 0.6rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}
.docs-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--border);
}
.docs-toc a {
  display: block;
  padding: 0.3rem 0.9rem;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--muted);
  text-decoration: none;
}
.docs-toc a:hover {
  color: var(--foreground);
}
.docs-toc a[aria-current="true"] {
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
}
@media (min-width: 1280px) {
  .docs-toc {
    display: block;
    position: sticky;
    top: 5.5rem;
    align-self: start;
    max-height: calc(100vh - 6.5rem);
    overflow-y: auto;
  }
}

/* ---------- article ---------- */
.docs-main {
  min-width: 0;
  max-width: 48rem;
}
.doc-section {
  margin: 0 0 0.6rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
}
.doc h1 {
  font-size: clamp(2rem, 4vw, 2.7rem);
  margin-bottom: 0.9rem;
}
.doc-lead {
  font-size: 1.18rem;
  color: var(--muted);
  margin-bottom: 2rem;
}
.doc h2 {
  font-size: 1.55rem;
  margin: 2.8rem 0 0.9rem;
  padding-top: 0.4rem;
}
.doc h3 {
  font-size: 1.2rem;
  margin: 2rem 0 0.6rem;
}
.doc h2 .anchor,
.doc h3 .anchor {
  margin-left: -1.3rem;
  padding-right: 0.45rem;
  color: var(--muted);
  text-decoration: none;
  opacity: 0;
  font-weight: 400;
}
.doc h2:hover .anchor,
.doc h3:hover .anchor,
.doc .anchor:focus {
  opacity: 1;
}
.doc ul,
.doc ol {
  padding-left: 1.4rem;
  margin: 0 0 1.2rem;
}
.doc li {
  margin: 0.35rem 0;
}
.doc li > ul,
.doc li > ol {
  margin-bottom: 0;
}
.doc hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}
.doc img:not(.shot) {
  border-radius: 0.6rem;
}
.doc .shot-figure {
  max-width: 100%;
}

/* previous / next */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.pager a {
  display: block;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--surface);
  color: var(--foreground);
  font-weight: 600;
  text-decoration: none;
}
.pager a:hover {
  border-color: color-mix(in srgb, var(--primary) 55%, var(--border));
}
.pager a span {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 0.15rem;
}
.pager-next {
  text-align: right;
  grid-column: 2;
}
.pager-prev {
  grid-column: 1;
}

/* ---------- search dialog ---------- */
.search[hidden] {
  display: none;
}
.search {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: start center;
  padding: 8vh 1rem 1rem;
}
.search-backdrop {
  position: absolute;
  inset: 0;
  background: rgb(0 0 0 / 0.55);
  backdrop-filter: blur(4px);
}
.search-panel {
  position: relative;
  width: min(40rem, 100%);
  max-height: 78vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  box-shadow: var(--shadow);
}
.search-input-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}
.search-input-row input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  color: var(--foreground);
  font: inherit;
  font-size: 1.05rem;
}
.search-input-row input:focus {
  outline: none;
}
.search-esc {
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--muted);
  border-radius: 0.4rem;
  font: inherit;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  cursor: pointer;
}
.search-results {
  list-style: none;
  margin: 0;
  padding: 0.5rem;
  overflow-y: auto;
}
.search-results a {
  display: block;
  padding: 0.7rem 0.9rem;
  border-radius: 0.7rem;
  color: var(--foreground);
  text-decoration: none;
}
.search-results a[aria-selected="true"],
.search-results a:hover {
  background: color-mix(in srgb, var(--primary) 14%, transparent);
}
.search-results .r-title {
  font-weight: 600;
}
.search-results .r-meta {
  font-size: 0.78rem;
  color: var(--muted);
}
.search-results .r-snippet {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 0.15rem;
}
.search-results mark {
  background: color-mix(in srgb, var(--primary) 30%, transparent);
  color: inherit;
  border-radius: 0.2rem;
}
.search-empty,
.search-hint {
  margin: 0;
  padding: 1rem 1.2rem;
  color: var(--muted);
  font-size: 0.92rem;
}

/* ---------- footer (docs) ---------- */
.docs-footer {
  padding: 1.5rem 0;
}
.footer-note-flat {
  margin: 0;
  padding-block: 0;
  border: 0;
}

body.no-scroll {
  overflow: hidden;
}

/* keep the header controls from being squeezed on small screens */
.nav-toggle,
.theme-switch,
.search-open {
  flex: none;
}
@media (max-width: 479px) {
  .site-header .brand > span {
    display: none; /* logo only; the link keeps its accessible name */
  }
  .header-inner {
    gap: 0.6rem;
  }
}