:root {
  --bg: #f6f4ee;
  --surface: #ffffff;
  --text: #1c2326;
  --muted: #5d686d;
  --border: #e2ddd1;
  --accent: #1f5c66;
  --accent-text: #ffffff;
  --link: #17616d;
  --chip: #ebe7dc;
  --prim-bg: #fdefc4;
  --prim-text: #8a5a00;
  --focus-ring: #e3a72f;
  --highlight: #fff8e1;
  --radius: 12px;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 2px 8px rgb(0 0 0 / 4%);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg: #121719;
    --surface: #1b2225;
    --text: #e6eaeb;
    --muted: #9aa7ab;
    --border: #2c373b;
    --accent: #5fb3bf;
    --accent-text: #0d1416;
    --link: #79c6d1;
    --chip: #253034;
    --prim-bg: #4a3a12;
    --prim-text: #ffdf8a;
    --highlight: #2a2a1c;
    --shadow: none;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #121719;
  --surface: #1b2225;
  --text: #e6eaeb;
  --muted: #9aa7ab;
  --border: #2c373b;
  --accent: #5fb3bf;
  --accent-text: #0d1416;
  --link: #79c6d1;
  --chip: #253034;
  --prim-bg: #4a3a12;
  --prim-text: #ffdf8a;
  --highlight: #2a2a1c;
  --shadow: none;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--link); }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: 52rem;
  margin: 0 auto;
  padding: 0 1rem;
}

main.container { flex: 1; padding-top: 1rem; padding-bottom: 2rem; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.muted, .note { color: var(--muted); }
.note { font-size: 0.9rem; margin: 0.25rem 0 0; }

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--accent);
  color: var(--accent-text);
  padding-top: env(safe-area-inset-top);
}
.header-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 3.25rem;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: inherit;
  text-decoration: none;
  font-weight: 650;
  margin-right: auto;
}
.brand img { border-radius: 6px; }
.nav { display: flex; gap: 0.25rem; }
.nav a {
  color: inherit;
  text-decoration: none;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
}
.nav a[aria-current="page"] { background: rgb(255 255 255 / 18%); }
.tools { display: flex; align-items: center; gap: 0.5rem; }
.langs { display: flex; border: 1px solid rgb(255 255 255 / 35%); border-radius: 999px; overflow: hidden; }
.langs button, .theme {
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  color: inherit;
  background: transparent;
  border: 0;
  padding: 0.3rem 0.55rem;
  cursor: pointer;
}
.langs button[aria-pressed="true"] { background: var(--accent-text); color: var(--accent); }
.theme { font-size: 1.05rem; border-radius: 999px; }

@media (max-width: 34rem) {
  .brand span { font-size: 0.95rem; }
  .header-row { padding-bottom: 0.4rem; }
}

/* ------------------------------------------------------------------ list */
.tagline { color: var(--muted); margin: 0.25rem 0 0.75rem; }
.controls { display: grid; gap: 0.6rem; margin-bottom: 0.5rem; }
.search input {
  width: 100%;
  font: inherit;
  font-size: 1.05rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip {
  font: inherit;
  font-size: 0.9rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--chip);
  color: var(--text);
  cursor: pointer;
}
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.count { color: var(--muted); font-size: 0.9rem; margin: 0.5rem 0; }

.results { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.4rem; }
.results .empty { color: var(--muted); padding: 1rem 0; }
.entry {
  display: grid;
  grid-template-columns: minmax(7rem, auto) 1fr;
  gap: 0.25rem 1rem;
  align-items: baseline;
  padding: 0.6rem 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow);
}
.entry:hover { border-color: var(--link); }
.entry .head { display: flex; align-items: baseline; gap: 0.4rem; flex-wrap: wrap; }
.entry .glosses { display: flex; flex-wrap: wrap; gap: 0.15rem 0.9rem; color: var(--muted); }
.entry .glosses b { color: var(--text); font-weight: 600; font-size: 0.85rem; }
.entry.reading { grid-template-columns: 2.5rem minmax(6rem, auto) 1fr auto; }
.entry .ord { color: var(--muted); font-variant-numeric: tabular-nums; font-size: 0.85rem; text-align: right; }

@media (max-width: 30rem) {
  .entry { grid-template-columns: 1fr; }
  .entry.reading { grid-template-columns: 2.2rem 1fr auto; }
  .entry.reading .glosses { grid-column: 2 / -1; }
}

.lemma { font-weight: 650; font-size: 1.1rem; }
.lemma sup, .tok sup { font-size: 0.65em; font-weight: 600; margin-left: 0.05em; }
.lemma.prim { color: var(--prim-text); }

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
  background: var(--chip);
  color: var(--muted);
  white-space: nowrap;
}
.badge.prim { background: var(--prim-bg); color: var(--prim-text); }

/* ------------------------------------------------------------------ word */
.back { text-decoration: none; }
.word-head { display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap; margin: 0.5rem 0 1rem; }
.word-head h1 { margin: 0; font-size: 2.2rem; line-height: 1.1; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin: 0 0 0.9rem;
  box-shadow: var(--shadow);
  scroll-margin-top: 4.5rem;
}
.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.6rem;
  align-items: baseline;
}
.card h2 .gloss { font-weight: 500; }
.reading-card.focus { border-color: var(--focus-ring); background: var(--highlight); }
.other-langs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1rem;
  margin: 0 0 0.6rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.other-langs abbr { text-decoration: none; font-weight: 600; text-transform: uppercase; font-size: 0.75rem; }

.def {
  font-size: 1.15rem;
  line-height: 1.9;
  margin: 0.4rem 0;
  padding: 0.6rem 0.8rem;
  background: var(--bg);
  border-radius: 8px;
}
.tok { text-decoration: underline dotted 1px; text-underline-offset: 0.2em; }
.tok:hover { text-decoration-style: solid; }
.tok.prim { color: var(--prim-text); text-decoration: none; font-weight: 500; }
.tok.prim:hover { text-decoration: underline; }
.prim-note { margin: 0.3rem 0; }
.prime { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9rem; }
.meta { color: var(--muted); font-size: 0.85rem; margin: 0.2rem 0 0.4rem; }

.used-in summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; }
.used-in .refs { display: flex; flex-wrap: wrap; gap: 0.35rem 0.8rem; margin: 0.4rem 0 0; }

.sources dl { margin: 0; display: grid; grid-template-columns: minmax(8rem, 12rem) 1fr; gap: 0.6rem 1rem; }
.sources dt { font-weight: 600; color: var(--muted); font-size: 0.9rem; }
.sources dd { margin: 0; }
.sources p { margin: 0; }
.sources .ku { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.3rem; }
.sources .ku li { background: var(--chip); border-radius: 999px; padding: 0.05rem 0.6rem; font-size: 0.9rem; }
.sources .pct { color: var(--muted); font-size: 0.8rem; }
.sources .license-note { color: var(--muted); font-size: 0.8rem; margin-top: 0.8rem; }
@media (max-width: 34rem) {
  .sources dl { grid-template-columns: 1fr; gap: 0.2rem; }
  .sources dd { margin-bottom: 0.6rem; }
}

/* ----------------------------------------------------------------- about */
.prose h1 { margin-top: 0; font-size: 1.5rem; }
.prose h2 { font-size: 1.1rem; margin: 1.2rem 0 0.3rem; display: block; }
.prose li { margin: 0.2rem 0; }

/* --------------------------------------------------------------- sources */
.refs-group { margin-top: 1.6rem; }
.refs-group h2 { font-size: 1.25rem; padding-bottom: 0.25rem; border-bottom: 1px solid var(--border); }
.refs-intro { color: var(--muted); margin: 0.4rem 0 0.6rem; }
.refs h3 { font-size: 1rem; margin: 1.1rem 0 0.4rem; }
.refs-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.8rem; }
.refs-list li { margin: 0; overflow-wrap: break-word; }
.ref-title { font-weight: 600; }
.ref-meta { color: var(--muted); font-size: 0.85rem; }
.ref-note { margin: 0.15rem 0 0; }
.ref-links { margin: 0.15rem 0 0; font-size: 0.85rem; }

/* --------------------------------------------------------------- tooltip */
.tip {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  max-width: min(22rem, calc(100vw - 1rem));
  padding: 0.45rem 0.7rem 0.5rem;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgb(0 0 0 / 18%);
  font-size: 0.9rem;
  line-height: 1.4;
  pointer-events: none;
}
.tip[hidden] { display: none; }
.tip-head { display: flex; align-items: baseline; gap: 0.5rem; }
.tip-lemma { font-weight: 650; }
.tip-lemma.prim { color: var(--prim-text); }
.tip-lemma sup { font-size: 0.7em; margin-left: 0.05em; }
.tip-kind { color: var(--muted); font-size: 0.78rem; }
.tip-gloss { margin-top: 0.1rem; }
.tip-other { display: grid; gap: 0.05rem; margin-top: 0.3rem; color: var(--muted); font-size: 0.82rem; }
.tip-other b { font-size: 0.68rem; font-weight: 600; margin-right: 0.3rem; }

/* ---------------------------------------------------------------- footer */
.site-footer {
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  padding: 0.75rem 0 calc(0.75rem + env(safe-area-inset-bottom));
}
.site-footer p { margin: 0.2rem 0; }
.loading { color: var(--muted); }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}