/* ---------- tokens ---------- */

:root {
  --font: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, monospace;

  --bg: oklch(97.5% 0.008 85);
  --surface: oklch(99% 0.004 85);
  --surface-2: oklch(95% 0.01 85);
  --ink: oklch(24% 0.02 260);
  --ink-2: oklch(42% 0.02 260);
  --ink-3: oklch(56% 0.015 260);
  --line: oklch(88% 0.012 85);
  --line-strong: oklch(78% 0.015 85);
  --accent: oklch(52% 0.16 265);
  --mark: oklch(90% 0.11 95);
  --warn: oklch(55% 0.15 60);

  --t1: oklch(52% 0.06 250);
  --t2: oklch(50% 0.13 155);
  --t3: oklch(52% 0.13 235);
  --t4: oklch(56% 0.15 55);
  --t5: oklch(53% 0.19 25);
  --t-bg-mix: 12%;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: oklch(18% 0.012 260);
    --surface: oklch(21% 0.014 260);
    --surface-2: oklch(25% 0.014 260);
    --ink: oklch(93% 0.008 85);
    --ink-2: oklch(78% 0.01 85);
    --ink-3: oklch(64% 0.012 260);
    --line: oklch(30% 0.014 260);
    --line-strong: oklch(40% 0.016 260);
    --accent: oklch(74% 0.12 265);
    --mark: oklch(45% 0.09 95);
    --warn: oklch(78% 0.12 70);

    --t1: oklch(74% 0.05 250);
    --t2: oklch(76% 0.13 155);
    --t3: oklch(75% 0.11 235);
    --t4: oklch(78% 0.13 60);
    --t5: oklch(72% 0.16 25);
    --t-bg-mix: 16%;
  }
}

:root[data-theme="dark"] {
  --bg: oklch(18% 0.012 260);
  --surface: oklch(21% 0.014 260);
  --surface-2: oklch(25% 0.014 260);
  --ink: oklch(93% 0.008 85);
  --ink-2: oklch(78% 0.01 85);
  --ink-3: oklch(64% 0.012 260);
  --line: oklch(30% 0.014 260);
  --line-strong: oklch(40% 0.016 260);
  --accent: oklch(74% 0.12 265);
  --mark: oklch(45% 0.09 95);
  --warn: oklch(78% 0.12 70);

  --t1: oklch(74% 0.05 250);
  --t2: oklch(76% 0.13 155);
  --t3: oklch(75% 0.11 235);
  --t4: oklch(78% 0.13 60);
  --t5: oklch(72% 0.16 25);
  --t-bg-mix: 16%;
}

:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

/* ---------- base ---------- */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

button { font: inherit; color: inherit; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 0 0.35em;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  background: var(--surface);
  font: inherit;
  font-size: 11px;
  line-height: 1.6;
  text-align: center;
  color: var(--ink-2);
}

code {
  font: inherit;
  padding: 0 0.3em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--ink);
}

mark { background: var(--mark); color: inherit; }

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

.muted { color: var(--ink-3); }

/* ---------- layout ---------- */

.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-sep { color: var(--ink-3); padding: 0 0.25em; font-weight: 400; }
.brand-tool { font-weight: 400; color: var(--ink-2); }

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 4px 10px;
  cursor: pointer;
  font-size: 12px;
  color: var(--ink-2);
}
.theme-toggle::before { content: "◐ "; color: var(--ink-3); }
.theme-toggle:hover { border-color: var(--line-strong); color: var(--ink); }

.intro { padding: 40px 0 20px; }

h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 6vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.lede { margin: 0; color: var(--ink-2); max-width: 56ch; }

/* ---------- controls ---------- */

.controls {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--bg);
  padding: 12px 0;
  display: grid;
  gap: 10px;
}

.search {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  padding: 0 12px;
}
.search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }

.search-icon {
  width: 16px; height: 16px; flex: none;
  fill: none; stroke: var(--ink-3); stroke-width: 1.5;
}

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 16px; /* no iOS zoom on focus */
  padding: 12px 0;
}
.search input::placeholder { color: var(--ink-3); }
.search input::-webkit-search-cancel-button { display: none; }
.search:focus-within .search-kbd { visibility: hidden; }

.filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  background: var(--surface);
}

.seg {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 13px;
  color: var(--ink-2);
}
.seg:last-child { border-right: 0; }
.seg:hover:not(:disabled) { background: var(--surface-2); color: var(--ink); }
.seg:disabled { cursor: default; opacity: 0.4; }
.seg-count { font-size: 11px; color: var(--ink-3); }
.seg.is-active { background: var(--ink); color: var(--bg); }
.seg.is-active .seg-count { color: inherit; opacity: 0.7; }
.seg[class*="tint-"].is-active { background: var(--tint); color: var(--bg); }

.switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  color: var(--ink-2);
  user-select: none;
}
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch-box {
  position: relative;
  width: 28px; height: 16px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  flex: none;
}
.switch-box::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 10px; height: 10px;
  background: var(--ink-3);
  transition: transform 120ms ease;
}
.switch input:checked + .switch-box { background: var(--ink); border-color: var(--ink); }
.switch input:checked + .switch-box::after { transform: translateX(12px); background: var(--bg); }
.switch input:focus-visible + .switch-box { outline: 2px solid var(--accent); outline-offset: 2px; }

.result-meta {
  margin: 4px 0 12px;
  font-size: 12px;
  color: var(--ink-3);
  min-height: 1.55em;
}

.link-button {
  border: 0;
  background: none;
  padding: 0;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: inherit;
}

/* ---------- class tints ---------- */

.tint-1 { --tint: var(--t1); }
.tint-2 { --tint: var(--t2); }
.tint-3 { --tint: var(--t3); }
.tint-4 { --tint: var(--t4); }
.tint-5 { --tint: var(--t5); }

/* ---------- groups ---------- */

.results { display: grid; gap: 16px; }

.group { border: 1px solid var(--line); background: var(--surface); }

.group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  border: 0;
  background: var(--surface-2);
  padding: 10px 14px;
  cursor: pointer;
  text-align: left;
}
.group-head:hover .group-name { text-decoration: underline; text-underline-offset: 3px; }
.group-head[aria-expanded="true"] { border-bottom: 1px solid var(--line); }

.group-tag {
  font-weight: 700;
  color: var(--tint);
}
.group-name { font-weight: 700; }
.group-count { margin-left: auto; font-size: 12px; color: var(--ink-3); }

.chevron {
  width: 14px; height: 14px; flex: none;
  fill: none; stroke: var(--ink-3); stroke-width: 1.5;
  transition: transform 120ms ease;
}
[aria-expanded="false"] > .chevron { transform: rotate(-90deg); }

/* ---------- rows ---------- */

.row {
  display: grid;
  grid-template-columns: auto 1fr;
  border-bottom: 1px solid var(--line);
}
.row:last-child { border-bottom: 0; }
.row.is-open { background: var(--bg); }

.code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 72px;
  margin: 8px 0 8px 10px;
  padding: 4px 0;
  border: 1px solid color-mix(in oklch, var(--tint) 45%, transparent);
  background: color-mix(in oklch, var(--tint) var(--t-bg-mix), transparent);
  color: var(--tint);
  font-weight: 700;
  font-size: 14px;
  cursor: copy;
  align-self: start;
}
.code:hover { background: color-mix(in oklch, var(--tint) calc(var(--t-bg-mix) + 10%), transparent); }
.code.is-copied { background: var(--tint); color: var(--surface); }
.code .check { width: 12px; height: 12px; }
.is-unofficial .code { border-style: dashed; }

.row-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 10px 14px;
  cursor: pointer;
  text-align: left;
}
.row-toggle:hover .phrase { text-decoration: underline; text-underline-offset: 3px; }

.phrase { min-width: 0; }

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-left: auto;
  justify-content: flex-end;
}
.badge {
  font-size: 11px;
  line-height: 1.5;
  padding: 0 6px;
  border: 1px solid var(--line);
  color: var(--ink-3);
  white-space: nowrap;
}
.badge-warn { color: var(--warn); border-color: color-mix(in oklch, var(--warn) 40%, transparent); }
.badge-unofficial { border-style: dashed; color: var(--ink-2); }

.badges:empty { display: none; }
.badges:empty + .chevron { margin-left: auto; }

/* ---------- detail ---------- */

.detail {
  grid-column: 1 / -1;
  padding: 2px 14px 16px 92px;
  display: grid;
  gap: 12px;
}

.desc { margin: 0; max-width: 64ch; }

.note {
  margin: 0;
  max-width: 64ch;
  padding: 8px 12px;
  border-left: 3px solid var(--tint);
  background: var(--surface-2);
  color: var(--ink-2);
}
.note-label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  margin-bottom: 2px;
}

.facts {
  margin: 0;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 16px;
  font-size: 13px;
}
.facts dt { color: var(--ink-3); }
.facts dd { margin: 0; }
.facts a { display: inline-flex; align-items: center; gap: 2px; }
.arrow { width: 12px; height: 12px; fill: none; stroke: currentColor; stroke-width: 1.5; }

.copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.copy-label { font-size: 12px; color: var(--ink-3); margin-right: 4px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  padding: 3px 8px;
  font-size: 12px;
  cursor: pointer;
  color: var(--ink-2);
}
.chip:hover { color: var(--ink); border-color: var(--ink-3); }
.chip.is-copied { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.chip .check { width: 12px; height: 12px; }

.check { fill: none; stroke: currentColor; stroke-width: 2; }


/* ---------- empty ---------- */

.empty {
  border: 1px dashed var(--line-strong);
  padding: 32px 20px;
  text-align: center;
  color: var(--ink-2);
  display: grid;
  justify-items: center;
  gap: 10px;
}
.empty p { margin: 0; }

/* ---------- footer ---------- */

.footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-3);
}
.footer p { margin: 0 0 4px; }
.footer a { color: var(--ink-2); }

/* ---------- small screens ---------- */

@media (max-width: 560px) {
  .page { padding: 0 16px 40px; }
  .intro { padding: 28px 0 12px; }
  .search-kbd { display: none; }
  .filters { align-items: flex-start; flex-direction: column; }
  .segmented { width: 100%; }
  .seg { flex: 1; justify-content: center; padding: 6px 4px; gap: 4px; }
  .code { width: 56px; margin-left: 8px; }
  .row-toggle { padding: 10px; flex-wrap: wrap; row-gap: 4px; }
  .badges { margin-left: 0; justify-content: flex-start; order: 3; flex-basis: 100%; }
  .badges:empty + .chevron, .row-toggle > .chevron { margin-left: auto; }
  .detail { padding: 2px 12px 14px; }
  .footer-keys { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}