/* ============================================================
   tiliajs.dev — blueprint stylesheet
   Family resemblance to épure: same type system, cream paper,
   ink hairlines, small-caps mono labels. tilia's own skin:
   warmer paper, linden green + honey accents, flat color only.
   See DESIGN.md for tokens and rationale.
   ============================================================ */

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./fonts/ibm-plex-sans-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("./fonts/ibm-plex-sans-500.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("./fonts/ibm-plex-sans-600.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./fonts/ibm-plex-mono-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("./fonts/ibm-plex-mono-500.woff2") format("woff2");
}

/* ---------- tokens ---------- */
:root {
  /* shared bones, inherited from épure (shifted to warm ivory) */
  --paper: #fbf6e9;
  --card: #fffdf4;
  --ink: #1d1a14;
  --muted: #5c5544;
  --faint: #8d8371;
  --line: #e8e1cc;
  --shade: #f4eedc;
  --lang-toggle: #fffdf455;

  /* tilia's own skin — brand green (wordmark leaf, code keywords) */
  --leaf: #2e7d3a;
  --leaf-ink: #25612f;
  --honey: #a3691a; /* warm second accent — borders, decor */
  --honey-ink: #8a5410; /* AA-safe honey for code strings */
  --honey-soft: #f5ecd9;

  /* accent role — green here; body.query re-inks it to sap blue */
  --accent: #2e7d3a; /* borders, marks, button fill — 4.9:1 vs label, AA */
  --accent-ink: #25612f; /* text and links — 7.2:1 on paper */
  --accent-soft: #e5efe0; /* flat tint, never a gradient */
  --accent-deep: #1e5227; /* button active */
  --btn-label: #fdfbf4;

  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;
}

/* ---------- base ---------- */
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "tnum";
}
h1,
h2,
h3 {
  margin: 0;
  text-wrap: balance;
}
p {
  margin: 0;
}
figure {
  margin: 0;
}
a {
  color: inherit;
}
::selection {
  background: var(--accent-soft);
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* small-caps mono label */
.k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding-left: clamp(20px, 4vw, 36px);
  padding-right: clamp(20px, 4vw, 36px);
}

/* skip link (docs page) */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 10;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 10px 18px;
}
.skip:focus {
  left: 0;
}

/* ---------- header ---------- */
.top {
  border-bottom: 1px solid var(--line);
}
.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  padding-bottom: 20px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.01em;
}
.wordmark svg {
  display: block;
  color: var(--leaf);
}
.package-mark {
  display: flex;
  align-items: center;
  gap: 8px;
}
.package-sep {
  color: var(--faint);
}
.package-name {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 13px;
  text-decoration: none;
}
.nav {
  display: flex;
  gap: clamp(14px, 3vw, 26px);
}
.nav a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}
.nav a:hover {
  color: var(--accent-ink);
  border-bottom-color: var(--accent-ink);
}
.nav a[aria-current="page"] {
  color: var(--accent-ink);
  border-bottom-color: var(--accent-ink);
}

/* ---------- sections ---------- */
section {
  padding-top: clamp(52px, 8vw, 88px);
  padding-bottom: clamp(52px, 8vw, 88px);
}
section + section {
  border-top: 1px solid var(--line);
}

.sec-kicker {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}
.sec-kicker .no {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-ink);
  letter-spacing: 0.14em;
}
.sec-kicker .rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}
.sec-kicker .tag {
  color: var(--faint);
}
.sec-head h2 {
  font-size: clamp(23px, 3.2vw, 30px);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.sec-lead {
  max-width: 60ch;
  margin-top: 12px;
  color: var(--muted);
  font-size: 16.5px;
}

/* ---------- hero ---------- */
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(32px, 5vw, 60px);
  align-items: center;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin-bottom: 20px;
}
.eyebrow .sep {
  color: var(--faint);
  padding: 0 6px;
}
.hero h1 {
  font-size: clamp(34px, 5.2vw, 52px);
  line-height: 1.06;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.hero .lead {
  margin-top: 20px;
  max-width: 50ch;
  color: var(--muted);
  font-size: 17px;
}
.lead code {
  font-family: var(--mono);
  font-size: 0.92em;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 12px 22px;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  background: transparent;
}
.btn:hover {
  border-color: var(--accent-ink);
  color: var(--accent-ink);
}
.btn.solid {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--btn-label);
}
.btn.solid:hover {
  background: var(--accent-ink);
  border-color: var(--accent-ink);
  color: var(--btn-label);
}
.btn.solid:active {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
}

/* dictionary entry */
.defcard {
  margin-top: 34px;
  max-width: 52ch;
  padding: 15px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--card);
  font-size: 14.5px;
  color: var(--muted);
}
.defcard .term {
  font-family: var(--mono);
  font-weight: 500;
  color: var(--ink);
}
.defcard .ipa {
  font-family: var(--mono);
  color: var(--faint);
}
.defcard .gram {
  font-style: italic;
  color: var(--faint);
}
/* defcard as a guide callout (markdown "::: def") */
.chapter .defcard {
  margin-top: 22px;
}
.defcard p {
  margin: 0;
}
.defcard p strong {
  font-family: var(--mono);
  font-weight: 500;
  color: var(--ink);
}

/* ---------- code figure ---------- */
.codefig {
  border: 1.5px solid var(--ink);
  background: var(--card);
}
.codebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
}
.codebar .figlabel {
  color: var(--faint);
}
.langswitch {
  display: inline-flex;
  border: 1px solid var(--line);
}
.langswitch button {
  appearance: none;
  border: 0;
  margin: 0;
  cursor: pointer;
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
}
.langswitch button + button {
  border-left: 1px solid var(--line);
}
.langswitch button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}
.codefig[data-lang="res"] .langswitch button[aria-pressed="true"] {
  background: var(--honey-soft);
  color: var(--honey-ink);
  box-shadow: inset 0 0 0 1px var(--honey);
}
pre.code,
pre[class^="language-"],
pre[class*=" language-"] {
  margin: 0;
  padding: 20px 22px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink);
}
.codefig[data-lang="ts"] .code-res {
  display: none;
}
.codefig[data-lang="res"] .code-ts {
  display: none;
}
.codefoot {
  padding: 10px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.codefoot .ps1 {
  color: var(--faint);
}

/* hand-set syntax tokens — restrained */
.tk {
  color: var(--leaf-ink);
} /* keyword — brand green on every page */
.ts {
  color: var(--honey-ink);
} /* string */
.tc {
  color: var(--faint);
  font-style: italic;
} /* comment */
.tf {
  font-weight: 500;
} /* call */

/* Prism tokens from docs build output */
.token.keyword,
.token.builtin {
  color: var(--leaf-ink);
}
.token.string,
.token.char,
.token.number,
.token.boolean,
.token.constant,
.token.attr-value {
  color: var(--honey-ink);
}
.token.comment,
.token.prolog,
.token.doctype {
  color: var(--faint);
  font-style: italic;
}
.token.function,
.token.function-variable {
  font-weight: 500;
}
/* Gherkin (Prism): step keywords, Feature/Scenario labels, table headers, tags */
.token.atrule {
  color: var(--leaf-ink);
}
.token.important {
  font-weight: 500;
}
.token.variable {
  color: var(--honey-ink);
}
.token.tag {
  color: var(--faint);
  font-style: italic;
}

/* ---------- value propositions ---------- */
.props {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-top: clamp(28px, 4vw, 44px);
}
.prop {
  padding: 26px 26px 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.prop:hover {
  background: var(--card);
}
.prop .pid {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--accent-ink);
}
.prop .glyph {
  margin: 18px 0 14px;
  color: var(--muted);
}
.prop:hover .glyph {
  color: var(--accent);
}
.prop .glyph svg {
  display: block;
}
.prop h3 {
  font-size: 17.5px;
  font-weight: 600;
  margin-bottom: 8px;
}
.prop p {
  font-size: 14.5px;
  color: var(--muted);
  max-width: 44ch;
}

/* ---------- bridge to épure ---------- */
.bridge {
  position: relative;
  border: 1.5px solid var(--ink);
  background: var(--card);
  padding: 24px 28px;
  display: flex;
  align-items: baseline;
  gap: 24px;
}
.bridge .k {
  color: var(--accent-ink);
  white-space: nowrap;
  font-weight: 500;
}
.bridge p {
  font-size: 15px;
  color: var(--muted);
  max-width: 62ch;
}
.bridge p strong {
  color: var(--ink);
  font-weight: 600;
}
.bridge-link {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}
.bridge-link:hover {
  color: var(--accent-ink);
}
.bridge-link .arrow {
  color: var(--accent-ink);
}

/* registration crosshairs — the épure stitch */
.reg {
  position: absolute;
  width: 22px;
  height: 22px;
  pointer-events: none;
}
.reg::before,
.reg::after {
  content: "";
  position: absolute;
  background: var(--ink);
}
.reg::before {
  left: 50%;
  top: 0;
  width: 1px;
  height: 100%;
}
.reg::after {
  top: 50%;
  left: 0;
  height: 1px;
  width: 100%;
}
.reg.tl {
  top: -12px;
  left: -12px;
}
.reg.br {
  bottom: -12px;
  right: -12px;
}

/* ---------- footer ---------- */
.foot {
  border-top: 1.5px solid var(--ink);
  background: var(--paper);
}
.foot .wrap {
  display: grid;
  grid-template-columns: repeat(5, auto);
  justify-content: space-between;
  gap: 12px 28px;
  padding-top: 18px;
  padding-bottom: 22px;
}
.fcell {
  min-width: 0;
}
.fcell .lbl {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 3px;
}
.fcell .val {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.fcell .val a {
  text-decoration: none;
  color: var(--accent-ink);
}
.fcell .val a:hover {
  text-decoration: underline;
}

/* ============================================================
   Docs page
   ============================================================ */
.docs-head {
  padding-top: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(28px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}
.docs-head h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.015em;
}
.docs-head .eyebrow {
  margin-bottom: 14px;
}
.standfirst {
  margin-top: 12px;
  max-width: 62ch;
  color: var(--muted);
  font-size: 16.5px;
}
.standfirst a {
  color: var(--accent-ink);
}

.docs-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
  padding-top: clamp(32px, 5vw, 52px);
  padding-bottom: clamp(52px, 8vw, 88px);
}

.toc {
  position: sticky;
  top: 24px;
}
.toc .idx-group {
  color: var(--faint);
  margin: 0 0 6px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--line);
}
.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: ch;
}
.toc li {
  counter-increment: ch;
}
.toc a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 13px;
  text-decoration: none;
  color: var(--muted);
  padding: 5px 0 5px 10px;
  border-left: 2px solid transparent;
}
.toc a::before {
  content: counter(ch, decimal-leading-zero);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--faint);
}
.toc a:hover {
  color: var(--accent-ink);
  border-left-color: var(--accent);
}
.toc a[aria-current="true"] {
  color: var(--accent-ink);
  border-left-color: var(--accent);
}
.toc a[aria-current="true"]::before {
  color: var(--accent-ink);
}

.chapters {
  max-width: 70ch;
}
.chapter {
  scroll-margin-top: 24px;
}
.chapter + .chapter {
  margin-top: clamp(44px, 6vw, 64px);
  padding-top: clamp(44px, 6vw, 64px);
  border-top: 1px solid var(--line);
}
.ch-kicker {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 10px;
}
.ch-kicker .no {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-ink);
  letter-spacing: 0.14em;
}
.ch-kicker .rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}
.chapter h2 {
  font-size: clamp(22px, 3vw, 27px);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.chapter h2 a {
  text-decoration: none;
}
.chapter h2 a:hover {
  color: var(--accent-ink);
}
.chapter h2 a:hover::after {
  content: " #";
  color: var(--line);
}
.chapter h3 {
  font-size: 17.5px;
  font-weight: 600;
  margin-top: 34px;
}

.chapter p.body,
.chapter ul,
.chapter ol {
  margin-top: 16px;
  font-size: 15.5px;
  color: var(--muted);
}
.chapter p.body strong {
  color: var(--ink);
  font-weight: 600;
}
.chapter p.body code,
.chapter ul code,
.chapter ol code,
.story code,
.pro code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--shade);
  border: 1px solid var(--line);
  padding: 1px 5px;
}
.chapter p.body a {
  color: var(--accent-ink);
}

.example {
  margin-top: 22px;
  border: 1px solid var(--line);
  background: var(--card);
}
.example .exbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 8px 8px 16px;
  border-bottom: 1px solid var(--line);
}
.example .exbar .k {
  color: var(--faint);
}
.example pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink);
}

.story {
  margin-top: 22px;
  padding: 2px 0 2px 20px;
  border-left: 2px solid var(--line);
  font-style: italic;
  font-size: 15px;
  color: var(--muted);
}
.story em {
  font-weight: 500;
}
.story .k {
  display: block;
  font-style: normal;
  color: var(--faint);
  margin-bottom: 4px;
}

.pro {
  margin-top: 22px;
  padding: 14px 18px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--card);
  font-size: 14.5px;
  color: var(--muted);
}
.pro .k {
  display: block;
  color: var(--accent-ink);
  font-weight: 500;
  margin-bottom: 6px;
}

.xref {
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}
.xref a {
  color: var(--accent-ink);
  text-decoration: none;
  text-transform: none;
  letter-spacing: 0.02em;
  font-size: 12px;
}
.xref a:hover {
  text-decoration: underline;
}
.xref .arrow {
  color: var(--accent-ink);
}

/* ============================================================
   API reference page
   ============================================================ */
.api-head {
  padding-top: clamp(40px, 6vw, 64px);
  padding-bottom: clamp(28px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}
.api-head h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.015em;
}
.api-head .eyebrow {
  margin-bottom: 14px;
}
.api-head .sec-lead {
  margin-top: 10px;
}

.api-layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
  padding-top: clamp(32px, 5vw, 52px);
  padding-bottom: clamp(52px, 8vw, 88px);
}
.api-index {
  position: sticky;
  top: 24px;
  display: flex;
  flex-direction: column;
}
.api-index .idx-group {
  color: var(--faint);
  margin: 0 0 6px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--line);
}
.api-index .idx-group:not(:first-child) {
  margin-top: 22px;
}
.api-index a {
  font-family: var(--mono);
  font-size: 13px;
  text-decoration: none;
  color: var(--muted);
  padding: 4px 0 4px 10px;
  border-left: 2px solid transparent;
}
.api-index a:hover {
  color: var(--accent-ink);
  border-left-color: var(--accent);
}

/* entry — manual-page pattern, repeats for 30+ entries */
.entry {
  scroll-margin-top: 24px;
}
.entry + .entry {
  margin-top: clamp(44px, 6vw, 64px);
  padding-top: clamp(44px, 6vw, 64px);
  border-top: 1px solid var(--line);
}
.entry-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-bottom: 10px;
}
.entry-head h2 {
  font-family: var(--mono);
  font-size: clamp(19px, 2.6vw, 23px);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.entry-head h2 a {
  text-decoration: none;
}
.entry-head h2 a:hover {
  color: var(--accent-ink);
}
.entry-head h2 a:hover::after {
  content: " #";
  color: var(--line);
}
.tags {
  display: flex;
  gap: 8px;
}
.tags span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--card);
  padding: 3px 8px;
}
.tags span.core {
  color: var(--accent-ink);
  border-color: var(--accent);
}
.tags span.react {
  color: var(--honey-ink);
  border-color: var(--honey);
}
.entry .summary {
  font-size: 16.5px;
  color: var(--ink);
  max-width: 60ch;
}
.sig-wrap[data-pair] {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.sig-wrap[data-pair] > pre.sig {
  margin-top: 0;
}
pre.sig {
  margin: 18px 0 0;
  padding: 14px 18px;
  overflow-x: auto;
  background: var(--shade);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.6;
  white-space: pre-wrap;
}
.entry .prose > p,
.entry .prose > ol,
.entry .prose > ul {
  margin-top: 18px;
  font-size: 15px;
  color: var(--muted);
  max-width: 66ch;
}
.entry .prose > p code,
.entry .prose > ul code,
.entry .prose > ol code,
.entry .summary code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--shade);
  border-radius: 2px;
  padding: 1px 5px;
}
.entry .ex {
  margin-top: 22px;
  border: 1px solid var(--line);
  background: var(--card);
}
.entry .ex figcaption {
  padding: 8px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--faint);
}
.entry .ex pre.code,
.entry .ex[data-pair] > pre.language-typescript,
.entry .ex[data-pair] > pre.language-rescript,
.entry .ex[data-pair] > pre.language-res,
.example > pre.code,
.example[data-pair] > pre.language-typescript,
.example[data-pair] > pre.language-rescript,
.example[data-pair] > pre.language-res {
  padding: 16px 18px;
}
.exbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.lang-toggle {
  appearance: none;
  border: 1px solid var(--line);
  margin: 0;
  cursor: pointer;
  background: var(--lang-toggle);
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
}
.lang-toggle .lt {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1;
  padding: 4px 8px;
}
html[data-lang="ts"] .lang-toggle .lt-ts {
  background: var(--accent-soft);
  color: var(--accent-ink);
  box-shadow: inset 0 0 0 1px var(--accent);
}
html[data-lang="res"] .lang-toggle .lt-res {
  background: var(--honey-soft);
  color: var(--honey);
  box-shadow: inset 0 0 0 1px var(--honey);
}
html[data-lang="ts"] [data-pair] > pre.language-rescript,
html[data-lang="ts"] [data-pair] > pre.language-res {
  display: none;
}
html[data-lang="res"] [data-pair] > pre.language-typescript {
  display: none;
}
.sig-wrap[data-pair] > .lang-toggle {
  position: absolute;
  top: 10px;
  right: 10px;
}

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .hero .wrap {
    grid-template-columns: minmax(0, 1fr);
  }
  .props {
    grid-template-columns: 1fr 1fr;
  }
  .bridge {
    flex-wrap: wrap;
  }
  .bridge-link {
    margin-left: 0;
  }
}
@media (max-width: 820px) {
  .docs-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
  .toc {
    position: static;
  }
  .toc ol {
    column-count: 2;
    column-gap: 24px;
  }
  .api-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
  .api-index {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 2px 18px;
  }
  .api-index .idx-group {
    border-bottom: none;
    margin: 0;
    width: 100%;
  }
  .api-index .idx-group:not(:first-child) {
    margin-top: 10px;
  }
  .api-index a {
    padding-left: 0;
    border-left: none;
  }
}
@media (max-width: 680px) {
  .toc ol {
    column-count: 1;
  }
  .props {
    grid-template-columns: 1fr;
  }
  .foot .wrap {
    grid-template-columns: 1fr 1fr;
  }
  .nav a:not([href$="api.html"]):not([href*="github"]) {
    display: none;
  }
}

/* ============================================================
   Signature leaf — landing pivot object behind the code card
   ============================================================ */
.hero {
  overflow: clip;
}
.code-slot {
  position: relative;
}
.code-slot .codefig {
  position: relative;
  z-index: 1;
}
.leaf-mark {
  position: absolute;
  right: -90px;
  bottom: -70px;
  width: 335px;
  height: auto;
  color: var(--ink);
  opacity: 0.08;
  z-index: 0;
  pointer-events: none;
}
@media (max-width: 920px) {
  .leaf-mark {
    display: none;
  }
}

/* ============================================================
   @tilia/query page — sève accent (body.query)
   Same paper, same bones; blue takes the accent role. Green
   stays on the wordmark leaf and code keywords (brand, syntax).
   ============================================================ */
body.query {
  --accent: #2c6d9e; /* 5.1:1 vs --btn-label — AA */
  --accent-ink: #245a84; /* 6.8:1 on paper */
  --accent-soft: #e4edf5;
  --accent-deep: #1d4a6d;
}

/* veins-lit leaf: the wood recedes, the transport network shows */
.leaf-mark.sap {
  opacity: 1;
}
.leaf-mark.sap .wood {
  opacity: 0.07;
}
.leaf-mark.sap .veins {
  stroke: var(--accent);
  stroke-width: 1.8;
  opacity: 0.2;
}
/* ---------- print / projection ---------- */
@media print {
  body {
    background: #fff;
  }
  .langswitch,
  .lang-toggle,
  .cta-row,
  .leaf-mark {
    display: none;
  }
  .codefig,
  .bridge,
  .example,
  .pro {
    break-inside: avoid;
  }
}