*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --mono: 'Geist Mono', ui-monospace, monospace;
  --sans: 'Geist', system-ui, sans-serif;
  --bg:   #0D0E0E;
  --bg2:  #171819;
  --bg3:  #262A2B;
  --bg4:  #2e3436;
  --fg:   #e8edf2;
  --fg2:  #8fa3b8;
  --fg3:  #4d6478;
  --fg4:  #2a3d52;
  --acc:  #F7A41D;
  --acc-dim: rgba(247,164,29,0.13);
  --acc-border: rgba(247,164,29,0.25);
  --steel: #4a7fa5;
  --ok:   #4ade80;
  --err:  #f87171;
  --b:    rgba(140,180,220,0.10);
  --b2:   rgba(140,180,220,0.18);
  --field: #a8c4d8;
  --param: #c4a8d8;
  --sidebar-w: 280px;
  --nav-h: 52px;
}

html, body {
  font-family: var(--mono);
  background: var(--bg);
  color: var(--fg);
  height: 100%;
}
body { overflow: hidden; }

a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: var(--mono); border: none; background: none; }

/* ── NAV ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(13,14,14,0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--b);
  display: flex; align-items: center; padding: 0 20px; gap: 16px;
}
.nav-logo { display: flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 700; color: var(--fg); letter-spacing: -0.3px; }
.nav-logo img { width: 24px; height: 24px; object-fit: contain; }
.nav-sep { color: var(--fg4); font-size: 16px; font-weight: 300; }
.nav-title { font-size: 13px; color: var(--fg2); }
.nav-ver { font-size: 10px; font-weight: 700; color: var(--acc); background: var(--acc-dim); border: 1px solid var(--acc-border); padding: 2px 7px; border-radius: 4px; letter-spacing: 0.05em; }
.nav-end { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.nav-link { font-size: 12px; color: var(--fg3); padding: 5px 10px; border-radius: 4px; transition: all 0.12s; }
.nav-link:hover { color: var(--fg); background: rgba(255,255,255,0.05); }
.btn-ghost { color: var(--fg2); font-size: 12px; padding: 5px 12px; border-radius: 6px; box-shadow: 0 0 0 1px var(--b2) inset; transition: opacity 0.15s; display: inline-block; }
.btn-ghost:hover { opacity: 0.75; }

/* ── LAYOUT ── */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  height: 100vh;
  padding-top: var(--nav-h);
}

/* ── SIDEBAR ── */
.sidebar {
  border-right: 1px solid var(--b);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}

.search-wrap {
  padding: 12px 12px 8px;
  border-bottom: 1px solid var(--b);
  flex-shrink: 0;
}

.search-box {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg2);
  border: 1px solid var(--b2);
  border-radius: 6px;
  padding: 0 10px;
  transition: border-color 0.15s;
}
.search-box:focus-within {
  border-color: rgba(247,164,29,0.4);
  box-shadow: 0 0 0 2px rgba(247,164,29,0.08);
}
.search-icon { color: var(--fg3); font-size: 13px; flex-shrink: 0; user-select: none; }
.search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg);
  padding: 9px 0;
  width: 100%;
}
.search-input::placeholder { color: var(--fg4); }
.search-kbd {
  font-size: 10px; color: var(--fg4);
  background: var(--bg3);
  border: 1px solid var(--b);
  border-radius: 3px;
  padding: 1px 5px;
  flex-shrink: 0;
  font-family: var(--mono);
}

.decl-list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 6px 0 24px;
}
.decl-list::-webkit-scrollbar { width: 4px; }
.decl-list::-webkit-scrollbar-track { background: transparent; }
.decl-list::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 2px; }

.decl-group-label {
  font-size: 9px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--fg4);
  padding: 14px 14px 5px;
}

.decl-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: background 0.1s, border-color 0.1s;
  user-select: none;
}
.decl-item:hover { background: var(--bg2); }
.decl-item.active,
.decl-item:target {
  background: var(--acc-dim);
  border-left-color: var(--acc);
}

.decl-tag {
  font-size: 9px; font-weight: 700;
  letter-spacing: 0.04em;
  padding: 2px 5px;
  border-radius: 3px;
  flex-shrink: 0;
  min-width: 32px;
  text-align: center;
}
.tag-struct { background: rgba(74,127,165,0.18); color: var(--steel); }
.tag-fn     { background: rgba(74,222,128,0.12); color: var(--ok); }
.tag-type   { background: rgba(247,164,29,0.15); color: var(--acc); }
.tag-const  { background: rgba(140,180,220,0.10); color: var(--fg3); }
.tag-error  { background: rgba(248,113,113,0.12); color: var(--err); }

.decl-name {
  font-size: 12px; color: var(--fg);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  flex: 1;
}
.decl-item.active .decl-name { color: var(--acc); }

/* ── MAIN ── */
.main {
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--bg);
  scroll-behavior: smooth;
}
.main::-webkit-scrollbar { width: 6px; }
.main::-webkit-scrollbar-track { background: transparent; }
.main::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 3px; }

.doc-pane {
  max-width: 820px;
  padding: 40px 48px 80px;
  margin: 0 auto;
}

.decl-section {
  scroll-margin-top: 24px;
  padding-bottom: 56px;
  margin-bottom: 56px;
  border-bottom: 1px solid var(--b);
}
.decl-section:last-child { border-bottom: none; margin-bottom: 0; }

/* breadcrumb */
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; color: var(--fg3);
  margin-bottom: 24px;
}
.breadcrumb-sep { color: var(--fg4); }
.breadcrumb-cur { color: var(--fg2); }

/* decl header */
.decl-header {
  display: flex; align-items: flex-start; gap: 14px;
  margin-bottom: 20px;
}
.decl-header-tag {
  font-size: 10px; font-weight: 700;
  padding: 3px 8px; border-radius: 4px;
  flex-shrink: 0; margin-top: 4px;
}
.decl-header h1 {
  font-size: 26px; font-weight: 700;
  color: var(--fg); letter-spacing: -0.8px;
  line-height: 1.1;
}

/* source line */
.source-line {
  font-size: 11px; color: var(--fg3);
  margin-bottom: 20px;
  display: flex; align-items: center; gap: 8px;
}
.source-link {
  color: var(--steel); cursor: pointer;
  transition: color 0.12s;
}
.source-link:hover { color: var(--fg2); }

/* doc comment */
.doc-comment {
  font-size: 13px; color: var(--fg2);
  line-height: 1.8;
  margin-bottom: 28px;
  padding: 16px 18px;
  background: var(--bg2);
  border-radius: 8px;
  border-left: 2px solid var(--b2);
}
.doc-comment code {
  font-family: var(--mono); font-size: 11.5px;
  color: var(--acc); background: var(--acc-dim);
  padding: 1px 5px; border-radius: 3px;
}
.doc-comment p + p { margin-top: 10px; }

/* signature block */
.sig-block {
  background: var(--bg2);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 28px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.5);
}
.sig-bar {
  background: var(--bg3);
  padding: 8px 14px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--b);
}
.sig-bar-label { font-size: 10px; color: var(--fg3); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.sig-body {
  padding: 16px 18px;
  font-size: 12.5px; line-height: 1.9;
  white-space: pre; overflow-x: auto;
  color: var(--fg);
  font-family: var(--mono);
}
.sig-body::-webkit-scrollbar { height: 3px; }
.sig-body::-webkit-scrollbar-thumb { background: var(--bg4); }

/* syntax colors */
.kw  { color: var(--acc); font-weight: 700; }
.fn  { color: var(--fg); }
.str { color: var(--ok); }
.cmt { color: var(--fg3); }
.typ { color: var(--fg2); }
.num { color: var(--acc); opacity: 0.65; }
.field { color: var(--field); }
.param { color: var(--param); }

/* fields / params table */
.section-title {
  font-size: 10px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--fg4);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--b);
}

.fields-table {
  width: 100%; border-collapse: collapse;
  font-size: 12px;
  margin-bottom: 28px;
}
.fields-table th {
  font-size: 9px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--fg4); padding: 6px 10px; text-align: left;
  border-bottom: 1px solid var(--b);
}
.fields-table td {
  padding: 9px 10px; color: var(--fg2);
  vertical-align: top; line-height: 1.55;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.fields-table tr:last-child td { border-bottom: none; }
.fields-table tr:hover td { background: rgba(255,255,255,0.02); }
.fields-table td:first-child { color: var(--field); white-space: nowrap; font-weight: 400; }
.fields-table td.col-type { color: var(--fg3); white-space: nowrap; }
.fields-table td code {
  font-family: var(--mono); font-size: 11px;
  color: var(--acc); background: var(--acc-dim);
  padding: 1px 4px; border-radius: 3px;
}
.fields-table td .def { color: var(--fg4); font-size: 11px; }

/* method cards (using <details>) */
.method-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 32px; }
.method-card {
  background: var(--bg2);
  border-radius: 6px;
  border: 1px solid var(--b);
  overflow: hidden;
  transition: border-color 0.12s;
}
.method-card:hover { border-color: var(--b2); }
.method-card > summary {
  list-style: none;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
}
.method-card > summary::-webkit-details-marker { display: none; }
.method-card > summary:hover { background: rgba(255,255,255,0.02); }
.method-fn-name { font-size: 13px; color: var(--fg); font-weight: 400; }
.method-fn-name .fn-keyword { color: var(--acc); font-weight: 700; margin-right: 6px; }
.method-return { font-size: 11px; color: var(--fg3); margin-left: auto; }
.method-chevron { color: var(--fg4); font-size: 11px; transition: transform 0.18s; }
.method-card[open] .method-chevron { transform: rotate(90deg); }
.method-body {
  border-top: 1px solid var(--b);
  padding: 12px 14px;
  font-size: 12px; color: var(--fg2); line-height: 1.7;
}
.method-sig {
  font-size: 11.5px; color: var(--fg3);
  white-space: pre; overflow-x: auto;
  margin-bottom: 8px; line-height: 1.8;
  font-family: var(--mono);
}

/* note box */
.note-box {
  font-size: 11.5px; color: var(--fg3); line-height: 1.7;
  padding: 11px 14px;
  background: var(--bg3);
  border-radius: 6px;
  border-left: 2px solid var(--acc);
  margin-bottom: 20px;
}
.note-box code {
  font-family: var(--mono); font-size: 11px;
  color: var(--acc);
}

.value-line {
  font-size: 13px;
  margin-bottom: 24px;
}
.value-line .value-type { color: var(--fg3); margin-right: 8px; }
.value-line .value-val  { color: var(--ok); }

@media (max-width: 700px) {
  :root { --sidebar-w: 220px; }
  .doc-pane { padding: 24px 20px 60px; }
}

/* ── PROSE (rendered SuperMD) ── */
.prose {
  max-width: 820px;
  padding: 40px 48px 80px;
  margin: 0 auto;
  font-size: 13.5px;
  color: var(--fg2);
  line-height: 1.8;
}
.prose h1, .prose h2, .prose h3, .prose h4 {
  color: var(--fg);
  font-weight: 700;
  letter-spacing: -0.4px;
  line-height: 1.2;
  margin-top: 1.6em;
  margin-bottom: 0.5em;
}
.prose h1 { font-size: 28px; letter-spacing: -0.8px; margin-top: 0; }
.prose h2 { font-size: 19px; padding-top: 14px; border-top: 1px solid var(--b); }
.prose h3 { font-size: 15px; color: var(--fg2); }
.prose h4 { font-size: 13px; color: var(--fg3); text-transform: uppercase; letter-spacing: 0.06em; }
.prose p, .prose ul, .prose ol, .prose blockquote { margin: 0.7em 0; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: 0.25em 0; }
.prose a { color: var(--steel); text-decoration: none; border-bottom: 1px solid rgba(74,127,165,0.3); transition: border-color 0.12s, color 0.12s; }
.prose a:hover { color: var(--fg); border-bottom-color: var(--fg2); }
.prose code {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--acc);
  background: var(--acc-dim);
  padding: 1px 5px;
  border-radius: 3px;
}
.prose pre {
  background: var(--bg2);
  border-radius: 8px;
  padding: 16px 18px;
  font-size: 12.5px;
  line-height: 1.85;
  overflow-x: auto;
  margin: 1em 0 1.4em;
  border-left: 2px solid var(--b2);
  color: var(--fg);
}
.prose pre code {
  background: none;
  color: var(--fg);
  padding: 0;
  font-size: 12.5px;
}
.prose blockquote {
  border-left: 2px solid var(--acc);
  padding: 8px 14px;
  background: var(--bg3);
  border-radius: 0 6px 6px 0;
  color: var(--fg3);
  font-size: 12.5px;
}
.prose hr { border: none; border-top: 1px solid var(--b); margin: 2em 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: 12.5px; margin: 1em 0; }
.prose table th, .prose table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--b); }
.prose table th { color: var(--fg4); font-size: 10px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.prose img { max-width: 100%; border-radius: 8px; margin: 1em 0; }

/* ── HOME / HERO ── */
.hero {
  max-width: 820px;
  padding: 80px 48px 40px;
  margin: 0 auto;
}
.hero-eyebrow {
  font-size: 10px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--acc); margin-bottom: 16px;
}
.hero h1 {
  font-size: 44px; font-weight: 700;
  letter-spacing: -1.4px; line-height: 1.05;
  color: var(--fg); margin-bottom: 14px;
}
.hero h1 span { color: var(--acc); }
.hero p {
  font-size: 15px; color: var(--fg2);
  line-height: 1.7; max-width: 620px;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-primary {
  display: inline-block;
  font-size: 12px; font-weight: 700;
  color: var(--bg); background: var(--acc);
  padding: 9px 18px; border-radius: 6px;
  letter-spacing: 0.02em;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.9; }
.btn-secondary {
  display: inline-block;
  font-size: 12px; color: var(--fg2);
  padding: 9px 18px; border-radius: 6px;
  box-shadow: 0 0 0 1px var(--b2) inset;
  transition: opacity 0.15s, color 0.15s;
}
.btn-secondary:hover { opacity: 1; color: var(--fg); }

.feature-grid {
  max-width: 820px; margin: 24px auto 0;
  padding: 0 48px 80px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.feature-card {
  background: var(--bg2);
  border-radius: 8px;
  padding: 18px 20px;
  border-left: 2px solid var(--b2);
}
.feature-card h3 {
  font-size: 12px; font-weight: 700;
  color: var(--acc);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 12.5px; color: var(--fg2);
  line-height: 1.65;
}

/* ── SIDEBAR (guides nav) ── */
.guide-sidebar .decl-group-label { padding: 14px 14px 5px; }

/* highlight-on-search */
.decl-item.hidden { display: none; }

/* ── Tree-sitter syntax highlighting (zine emits these classes) ── */
.prose pre .keyword,
.prose pre .keyword_control,
.prose pre .keyword_function,
.prose pre .keyword_operator,
.prose pre .keyword_repeat,
.prose pre .keyword_return,
.prose pre .keyword_storage,
.prose pre .conditional { color: var(--acc); font-weight: 700; }

.prose pre .function,
.prose pre .function_call,
.prose pre .function_method,
.prose pre .function_builtin,
.prose pre .method { color: var(--fg); font-weight: 400; }

.prose pre .string,
.prose pre .string_special,
.prose pre .character { color: var(--ok); }

.prose pre .number,
.prose pre .float,
.prose pre .boolean,
.prose pre .constant,
.prose pre .constant_builtin,
.prose pre .constant_numeric { color: var(--acc); opacity: 0.75; }

.prose pre .comment,
.prose pre .comment_line,
.prose pre .comment_block { color: var(--fg3); font-style: italic; }

.prose pre .type,
.prose pre .type_builtin,
.prose pre .type_definition,
.prose pre .storage_type { color: var(--fg2); }

.prose pre .variable,
.prose pre .variable_parameter,
.prose pre .parameter { color: var(--param); }

.prose pre .property,
.prose pre .field { color: var(--field); }

.prose pre .operator,
.prose pre .punctuation,
.prose pre .punctuation_bracket,
.prose pre .punctuation_delimiter,
.prose pre .punctuation_special { color: var(--fg2); }

.prose pre .attribute,
.prose pre .label,
.prose pre .tag { color: var(--steel); }

.prose pre .escape,
.prose pre .string_escape { color: var(--err); }