/* =========================================================
   Arksc Wiki
   ========================================================= */

.wiki-page { --max: 1320px; }

.wiki-shell {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 210px;
  gap: 44px;
  align-items: start;
  padding: 38px 0 72px;
}
.wiki-shell-no-toc {
  grid-template-columns: 250px minmax(0, 1fr);
}
.wiki-shell-no-toc .wiki-main { max-width: 860px; }

.wiki-main {
  min-width: 0;
  max-width: 780px;
}

/* ---------- Sidebar ---------- */

.wiki-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
  font-size: 13px;
}

.wiki-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.wiki-sidebar-title {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.wiki-sidebar-close {
  display: none;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.wiki-search {
  position: relative;
  margin-bottom: 18px;
}
.wiki-search-icon {
  position: absolute;
  left: 11px;
  top: 50%;
  width: 15px;
  height: 15px;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}
.wiki-search input {
  width: 100%;
  height: 38px;
  padding: 0 38px 0 33px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 13px;
  outline: none;
  transition: border-color .18s, box-shadow .18s;
}
.wiki-search input::placeholder { color: var(--muted); }
.wiki-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.wiki-search-kbd {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  pointer-events: none;
}

.wiki-search-results {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 6px);
  z-index: 120;
  max-height: 62vh;
  overflow-y: auto;
  padding: 6px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
}
.wiki-search-results[hidden] { display: none; }
.wiki-result {
  display: block;
  padding: 9px 10px;
  border-radius: 7px;
  text-decoration: none;
  color: inherit;
}
.wiki-result:hover,
.wiki-result:focus {
  background: var(--bg-soft);
  color: inherit;
  outline: none;
}
.wiki-result strong {
  display: block;
  font-size: 13px;
  color: var(--ink);
  line-height: 1.45;
}
.wiki-result small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}
.wiki-result .wiki-result-project {
  display: inline-block;
  margin-bottom: 3px;
  font-size: 9.5px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent-strong);
}
.wiki-result mark {
  background: var(--accent-soft);
  color: var(--ink);
  border-radius: 2px;
  padding: 0 1px;
}
.wiki-search-empty {
  padding: 12px 10px;
  color: var(--muted);
  font-size: 12px;
}

.wiki-search-lg {
  max-width: 680px;
  margin-bottom: 0;
}
.wiki-search-lg input {
  height: 50px;
  padding-left: 42px;
  padding-right: 44px;
  font-size: 15px;
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.wiki-search-lg .wiki-search-icon {
  left: 15px;
  width: 18px;
  height: 18px;
}
.wiki-search-lg .wiki-search-kbd { right: 13px; }
.wiki-search-lg .wiki-search-results { top: calc(100% + 8px); }

.wiki-project-switch {
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.wiki-project-switch label {
  display: block;
  margin-bottom: 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.wiki-project-switch select {
  width: 100%;
  height: 36px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 13px;
  outline: none;
}
.wiki-project-switch select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.wiki-nav { display: flex; flex-direction: column; gap: 1px; }
.wiki-nav-title {
  margin: 0 0 7px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.wiki-nav-link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 8px;
  border-radius: 6px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 12.5px;
  line-height: 1.55;
  transition: background .15s, color .15s;
}
.wiki-nav-link:hover {
  background: var(--bg-soft);
  color: var(--ink);
}
.wiki-nav-link.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}
.wiki-nav-idx {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--line-strong);
  padding-top: 1px;
}
.wiki-nav-link.active .wiki-nav-idx { color: var(--accent); }

.wiki-home-link {
  display: inline-block;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  width: 100%;
  color: var(--muted);
  font-size: 12px;
  text-decoration: none;
}
.wiki-home-link:hover { color: var(--accent-strong); }

.wiki-sidebar-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 13px;
  cursor: pointer;
}
.wiki-sidebar-toggle svg { width: 16px; height: 16px; }

/* ---------- Content header ---------- */

.wiki-header {
  padding-bottom: 24px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line);
}
.wiki-kicker {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent-strong);
}
.wiki-header h1 {
  font-size: clamp(30px, 3.8vw, 42px);
  line-height: 1.25;
  letter-spacing: -.01em;
  margin-bottom: 12px;
}
.wiki-dek {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}
.wiki-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 12px;
}
.wiki-meta span { display: inline-flex; align-items: center; gap: 5px; }

.wiki-prose { font-size: 15.5px; }
.wiki-prose > p:first-child { margin-top: 0; }
.wiki-prose h3 { scroll-margin-top: calc(var(--header-h) + 20px); }
.wiki-prose h4 { scroll-margin-top: calc(var(--header-h) + 20px); }
.wiki-prose .btn { text-decoration: none; }

.heading-anchor {
  margin-left: .35em;
  color: var(--line-strong);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: .72em;
  font-weight: 400;
  opacity: 0;
  transition: opacity .15s, color .15s;
}
.wiki-prose h3:hover .heading-anchor,
.wiki-prose h4:hover .heading-anchor,
.heading-anchor:focus { opacity: 1; }
.heading-anchor:hover { color: var(--accent-strong); }

/* ---------- TOC ---------- */

.wiki-toc {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  font-size: 12px;
}
.wiki-toc nav {
  padding: 16px 16px 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 9px;
  box-shadow: var(--shadow-sm);
}
.wiki-toc h2 {
  margin: 0 0 9px;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.wiki-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: wtoc;
}
.wiki-toc li {
  counter-increment: wtoc;
  margin: 0;
}
.wiki-toc a {
  position: relative;
  display: block;
  padding: 4px 0 4px 21px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 11.5px;
  line-height: 1.55;
  border-radius: 4px;
}
.wiki-toc a::before {
  content: counter(wtoc, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--line-strong);
}
.wiki-toc a:hover {
  color: var(--accent-strong);
  background: var(--bg-soft);
}
.wiki-toc a.active {
  color: var(--accent-strong);
  font-weight: 600;
  background: var(--accent-soft);
}
.wiki-toc .toc-sub a { padding-left: 30px; font-size: 11px; }
.wiki-toc .toc-sub a::before { left: 9px; content: "·"; }
.wiki-toc-top {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 0 0;
  border-top: 1px solid var(--line);
  width: 100%;
  color: var(--muted);
  font-size: 10.5px;
  text-decoration: none;
}
.wiki-toc-top::before { content: none !important; display: none; }
.wiki-toc-top:hover { color: var(--accent-strong); }

/* ---------- Prev / next + footer links ---------- */

.wiki-prev-next { margin-top: 38px; }
.wiki-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
.wiki-footer-links a {
  color: var(--muted);
  text-decoration: none;
}
.wiki-footer-links a:hover { color: var(--accent-strong); text-decoration: underline; }

/* ---------- Project home ---------- */

.wiki-project-hero {
  padding: 4px 0 30px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line);
}
.wiki-project-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  margin-bottom: 18px;
}
.wiki-project-hero h1 {
  font-size: clamp(30px, 3.8vw, 42px);
  margin-bottom: 10px;
}
.wiki-project-hero p {
  max-width: 640px;
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.85;
}
.wiki-project-intro { margin-bottom: 36px; }
.wiki-section-title {
  font-size: 22px;
  margin: 0 0 16px;
}

.wiki-page-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.wiki-page-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 9px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform .18s, border-color .18s, box-shadow .18s;
}
.wiki-page-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
  color: inherit;
}
.wiki-page-num {
  flex-shrink: 0;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--line-strong);
}
.wiki-page-body { min-width: 0; flex: 1; }
.wiki-page-body strong {
  display: block;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink);
}
.wiki-page-body small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}
.wiki-page-arrow {
  color: var(--accent-strong);
  font-size: 14px;
  padding-top: 1px;
  transition: transform .18s;
}
.wiki-page-card:hover .wiki-page-arrow { transform: translateX(2px); }

/* ---------- Wiki home index ---------- */

.wiki-index-groups { margin-top: 48px; }
.wiki-index-group {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.wiki-index-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}
.wiki-index-head h2 {
  font-size: 24px;
  margin: 0;
}
.wiki-index-head h2 a {
  color: var(--ink);
  text-decoration: none;
}
.wiki-index-head h2 a:hover { color: var(--accent-strong); }
.wiki-index-head span { color: var(--muted); font-size: 11px; }
.wiki-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 28px;
}
.wiki-index-list li {
  margin: 0;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}
.wiki-index-list a {
  display: block;
  color: var(--ink);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
}
.wiki-index-list a:hover { color: var(--accent-strong); text-decoration: underline; }
.wiki-index-list span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

/* ---------- Projects page ---------- */

.project-feature-list {
  display: grid;
  gap: 18px;
}
.project-feature {
  padding: 28px 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.project-feature-head {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.project-feature-head .tut-icon {
  flex-shrink: 0;
  margin: 0;
}
.project-feature-head h2 {
  font-size: 26px;
  margin: 2px 0 8px;
}
.project-feature-head p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
  max-width: 680px;
}
.project-feature-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 20px;
}
.project-feature-meta span {
  font-size: 10.5px;
  color: var(--muted);
  background: var(--bg-soft);
  border-radius: 4px;
  padding: 3px 8px;
}
.project-feature-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Responsive ---------- */

@media (max-width: 1180px) {
  .wiki-shell {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 34px;
  }
  .wiki-shell-no-toc { grid-template-columns: 230px minmax(0, 1fr); }
  .wiki-toc { display: none; }
  .wiki-main { max-width: 820px; }
}

@media (max-width: 900px) {
  .wiki-page { --max: 1080px; }
  .wiki-shell,
  .wiki-shell-no-toc {
    display: block;
    padding: 26px 0 56px;
  }
  .wiki-sidebar {
    display: none;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 120;
    padding: 20px;
    background: var(--bg);
    border-right: 0;
    overflow-y: auto;
    box-shadow: var(--shadow-md);
  }
  .wiki-sidebar.open { display: block; }
  .wiki-sidebar-close { display: grid; }
  .wiki-sidebar-toggle { display: inline-flex; }
  .wiki-main { max-width: none; }
  .wiki-page-grid { grid-template-columns: 1fr; }
  .wiki-index-list { grid-template-columns: 1fr; }
  .wiki-project-hero h1 { font-size: 34px; }
  .project-feature { padding: 24px 22px; }
  .project-feature-head { gap: 14px; }
  .project-feature-head h2 { font-size: 23px; }
}

@media (max-width: 720px) {
  .wiki-search-lg input { height: 46px; font-size: 14px; }
  .wiki-header h1 { font-size: 30px; }
  .wiki-dek { font-size: 14.5px; }
  .wiki-page { --max: 100%; }
  .wiki-shell { padding-top: 22px; }
  .wiki-index-head h2 { font-size: 21px; }
  .project-feature-head { display: block; }
  .project-feature-head .tut-icon { margin-bottom: 14px; }
  .wiki-meta { gap: 10px; }
}

/* Lock background when the mobile wiki drawer is open. */
body.wiki-nav-open { overflow: hidden; }

/* ---------- Print ---------- */

@media print {
  .wiki-sidebar, .wiki-toc, .wiki-sidebar-toggle, .wiki-prev-next, .wiki-footer-links { display: none !important; }
  .wiki-shell, .wiki-shell-no-toc { display: block; padding: 0; }
  .wiki-main { max-width: none; }
}