:root {
  color-scheme: light dark;
  --bg: #f3f5f9;
  --surface: #ffffff;
  --text: #17202e;
  --muted: #4b5668;
  --border: #c3cddb;
  --border-soft: #dde3ec;
  --accent: #1d5bbf;
  --accent-soft: #e4edfc;
  --on-accent: #ffffff;
  --focus: #0b3d91;
  --hero-from: #e6eefc;
  --hero-to: #f3f5f9;
  --ok-bg: #dff3e4;
  --ok-text: #11502a;
  --warn-bg: #fcefd0;
  --warn-text: #5e3700;
  --none-bg: #e3e8f8;
  --none-text: #1c2859;
  --bad-bg: #fbe1e1;
  --bad-text: #771111;
  --code-bg: #eceff4;
  --shadow: 0 1px 2px rgba(20, 32, 55, 0.06), 0 4px 14px rgba(20, 32, 55, 0.06);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e131a;
    --surface: #171e28;
    --text: #e8ecf2;
    --muted: #aeb8c7;
    --border: #3a4657;
    --border-soft: #2a3442;
    --accent: #84b6ff;
    --accent-soft: #1b2b45;
    --on-accent: #08172e;
    --focus: #b7d4ff;
    --hero-from: #16233a;
    --hero-to: #0e131a;
    --ok-bg: #12351f;
    --ok-text: #bdf0cb;
    --warn-bg: #3b2a08;
    --warn-text: #fbd999;
    --none-bg: #1f2850;
    --none-text: #cdd6ff;
    --bad-bg: #481515;
    --bad-text: #ffcccc;
    --code-bg: #232c39;
    --shadow: none;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 1rem/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap {
  max-width: 52rem; margin-inline: auto;
  padding-left: max(16px, 4vw, env(safe-area-inset-left));
  padding-right: max(16px, 4vw, env(safe-area-inset-right));
}
main.wrap { padding-block: 0.5rem 2rem; }
footer.wrap { padding-top: 1.2rem; padding-bottom: calc(3rem + env(safe-area-inset-bottom)); color: var(--muted); font-size: 0.88rem; border-top: 1px solid var(--border-soft); }
footer p { margin: 0; }

h1 { font-size: clamp(1.8rem, 6vw, 2.5rem); line-height: 1.1; margin: 0.2rem 0 0.5rem; letter-spacing: -0.02em; }
h2 { font-size: 1.2rem; line-height: 1.3; margin: 0 0 0.6rem; }
h3 { font-size: 1rem; margin: 0 0 0.3rem; }
p { margin: 0 0 0.7rem; }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 0.92rem; margin: 0.4rem 0 0; }

code, pre, textarea { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.88em; overflow-wrap: anywhere; }
pre { background: var(--code-bg); padding: 0.7rem; border-radius: 8px; overflow-x: auto; font-size: 0.82rem; margin: 0.5rem 0; }

.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--on-accent); padding: 0.6rem 1rem; z-index: 10; }
.skip:focus { left: 0; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* Hero */
.hero { background: linear-gradient(180deg, var(--hero-from), var(--hero-to)); padding-block: 1.8rem 1.2rem; }
.eyebrow { margin: 0; color: var(--accent); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.82rem; }
.lead { font-size: 1.1rem; color: var(--muted); margin-bottom: 0.9rem; max-width: 36rem; }
.privacy-pill {
  display: inline-flex; align-items: center; gap: 0.5rem; margin: 0; padding: 0.4rem 0.85rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px; font-size: 0.92rem; font-weight: 600;
}
.icon { width: 1.1rem; height: 1.1rem; fill: var(--ok-text); flex: none; }

/* Collapsible helpers */
details.how { margin: 0.4rem 0; }
details.how > summary { font-weight: 600; font-size: 0.95rem; }
details.how ul { margin: 0.3rem 0 0.5rem; padding-left: 1.2rem; font-size: 0.93rem; color: var(--muted); }
details.how li { margin-bottom: 0.35rem; }
summary { cursor: pointer; min-height: 40px; display: flex; align-items: center; gap: 0.5rem; color: var(--accent); list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::before {
  content: ""; width: 0.5rem; height: 0.5rem; flex: none; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(-45deg); margin-right: 0.2rem; transition: transform 0.12s;
}
details[open] > summary::before { transform: rotate(45deg); }
@media (prefers-reduced-motion: reduce) { summary::before { transition: none; } }
.hero details.how { margin: 0.5rem 0 0; }
.hero details.how ul { max-width: 40rem; }
.tag { font-size: 0.72rem; font-weight: 700; padding: 0.1rem 0.5rem; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }

/* Engine status */
.engine {
  display: flex; align-items: center; gap: 0.6rem; margin: 0.6rem 0; padding: 0.5rem 0.9rem; font-size: 0.92rem;
  border: 1px solid var(--border-soft); border-radius: 999px; background: var(--surface); width: fit-content; max-width: 100%;
}
.engine.ready { border-color: var(--ok-text); color: var(--ok-text); }
.spinner { width: 0.9rem; height: 0.9rem; border-radius: 50%; border: 3px solid var(--border); border-top-color: var(--accent); animation: spin 0.9s linear infinite; flex: none; }
.engine.ready .spinner { animation: none; border-color: var(--ok-text); background: var(--ok-text); }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation: none; } }

/* Input card */
.card { background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 1.1rem; margin: 0.8rem 0 1.2rem; box-shadow: var(--shadow); }
.field { margin: 0 0 1.1rem; padding: 0; border: 0; min-width: 0; }
.field-head { display: flex; justify-content: space-between; align-items: center; }
.field-label { font-weight: 700; font-size: 1.05rem; padding: 0; margin-bottom: 0.4rem; display: block; }
legend.field-label { float: left; width: 100%; }
legend.field-label + * { clear: both; }
.link-btn { font: inherit; background: none; border: 0; color: var(--muted); cursor: pointer; min-height: 44px; padding: 0 0.4rem; text-decoration: underline; }
textarea {
  display: block; width: 100%; min-height: 9.5rem; padding: 0.7rem 0.8rem; font-size: 1rem; line-height: 1.45;
  background: var(--bg); color: var(--text); border: 2px solid var(--border); border-radius: 10px; resize: vertical;
}
textarea::placeholder { color: var(--muted); opacity: 0.9; }
textarea:focus-visible { border-color: var(--focus); outline-offset: 0; }

.chips { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; margin-top: 0.6rem; }
.chips-label { color: var(--muted); font-size: 0.9rem; margin-right: 0.2rem; }
.chip {
  font: inherit; font-size: 0.9rem; font-weight: 600; min-height: 36px; padding: 0.25rem 0.8rem; border-radius: 999px; cursor: pointer;
  background: var(--accent-soft); color: var(--accent); border: 1px solid transparent;
}
.chip { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
@media (hover: hover) { .chip:hover { border-color: var(--accent); } }
.chip[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }

/* Segmented catalogue choice */
.segmented { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.segmented input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.segmented label {
  flex: 1 1 min(12rem, 100%); min-height: 44px; display: flex; align-items: center; justify-content: center; text-align: center; gap: 0.3rem;
  padding: 0.4rem 0.8rem; border: 2px solid var(--border); border-radius: 10px; cursor: pointer; font-weight: 600; background: var(--surface);
}
.segmented label { min-width: 0; flex-wrap: wrap; overflow-wrap: anywhere; }
.segmented input:checked + label { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.segmented input:focus-visible + label { outline: 3px solid var(--focus); outline-offset: 2px; }
.file-row { margin-top: 0.6rem; }
.file-label { display: block; font-size: 0.92rem; margin-bottom: 0.25rem; color: var(--muted); }
input[type="file"] { max-width: 100%; font-size: 1rem; }
.sample-list { list-style: none; padding: 0 !important; display: grid; gap: 0.4rem; }
.sample-list li { background: var(--bg); border: 1px solid var(--border-soft); border-radius: 8px; padding: 0.45rem 0.7rem; font-size: 0.86rem; margin: 0; overflow-wrap: anywhere; color: var(--text); }

.online { border-top: 1px solid var(--border-soft); padding-top: 0.8rem; }
.online .field-label { font-size: 1rem; }
.choice { display: flex; align-items: center; gap: 0.6rem; min-height: 44px; padding: 0; }
.choice input { width: 1.35rem; height: 1.35rem; margin: 0; flex: none; accent-color: var(--accent); }
.choice label { flex: 1; min-height: 44px; display: flex; align-items: center; }
.choice + .hint { margin: 0 0 0.4rem 2rem; }

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1rem; margin-top: 1rem; }
.btn {
  font: inherit; font-weight: 600; min-height: 44px; padding: 0.55rem 1.1rem; border-radius: 10px; cursor: pointer;
  border: 2px solid var(--accent); background: var(--surface); color: var(--accent);
}
.btn.primary { background: var(--accent); color: var(--on-accent); font-size: 1.1rem; padding: 0.7rem 2rem; min-width: min(12rem, 100%); }
.btn.small { min-height: 40px; font-size: 0.92rem; padding: 0.35rem 0.9rem; }
@media (hover: hover) { .btn:hover:not(:disabled) { filter: brightness(1.08); } }
.btn, .link-btn, summary, .segmented label, .choice label { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.btn:disabled { cursor: not-allowed; opacity: 0.55; }
.btn { max-width: 100%; }

.error { background: var(--bad-bg); color: var(--bad-text); border: 2px solid var(--bad-text); border-radius: var(--radius); padding: 0.9rem 1.1rem; margin: 1rem 0; }
.error h2, .error h3 { color: inherit; }
.error code { background: transparent; border: 1px solid currentColor; }
.error .btn { background: var(--surface); }

/* Results */
.results { margin: 1.5rem 0; scroll-margin-top: 1rem; }
.results > h2, .results h2#results-h { font-size: 1.6rem; margin-bottom: 0.2rem; }
.results h2:focus { outline: none; }
.meta { color: var(--muted); font-size: 0.92rem; margin-bottom: 0.7rem; }
.banner {
  display: flex; gap: 0.5rem; align-items: center; background: var(--none-bg); color: var(--none-text);
  border-radius: 10px; padding: 0.55rem 0.9rem; margin: 0 0 0.9rem; font-weight: 600; font-size: 0.95rem;
}
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 5.4rem), 1fr)); gap: 0.6rem; margin: 0; padding: 0; list-style: none; }
.tile { border-radius: var(--radius); padding: 0.8rem 0.9rem; border: 2px solid currentColor; min-width: 0; }
.tile .big { font-size: clamp(1.3rem, 5vw, 2rem); font-weight: 800; line-height: 1.1; }
.tile .pct { font-size: 1rem; font-weight: 700; }
.tile .name { font-weight: 700; margin-top: 0.25rem; }
.tile .what { font-size: 0.84rem; margin: 0.15rem 0 0; }
.tile.verified { background: var(--ok-bg); color: var(--ok-text); }
.tile.metadata_mismatch { background: var(--warn-bg); color: var(--warn-text); }
.tile.no_verdict { background: var(--none-bg); color: var(--none-text); }
.bar { display: flex; height: 0.8rem; border: 2px solid var(--text); border-radius: 999px; overflow: hidden; margin: 0.7rem 0 0.4rem; }
.bar span { display: block; min-width: 0; }
.bar .verified { background: var(--ok-text); }
.bar .metadata_mismatch { background: var(--warn-text); }
.bar .no_verdict { background: repeating-linear-gradient(135deg, var(--none-text) 0 4px, var(--none-bg) 4px 8px); }
.flags-line { margin: 0.3rem 0; font-size: 0.95rem; font-weight: 600; }
.legend summary { font-size: 0.92rem; min-height: 36px; }
.legend ul { margin: 0.2rem 0 0.6rem; padding-left: 1.2rem; font-size: 0.9rem; color: var(--muted); }

.toolbar { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.6rem; margin: 0.9rem 0 0.4rem; align-items: center; }
.filters { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.exports { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.notes { margin: 0.5rem 0; }
.notes summary { font-size: 0.92rem; min-height: 36px; }
.notes p { background: var(--none-bg); color: var(--none-text); border-radius: 8px; padding: 0.5rem 0.8rem; font-size: 0.9rem; margin: 0.3rem 0; }

.refs { list-style: none; padding: 0; margin: 0.6rem 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.7rem; }
.refs > li, .bib li, .cand-list li { min-width: 0; }
.results, .lookup, .formatted { overflow-wrap: anywhere; }
.refs > li[hidden] { display: none; }
.ref { background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 0.85rem 1rem; border-left-width: 8px; box-shadow: var(--shadow); }
.ref.verified { border-left-color: var(--ok-text); }
.ref.metadata_mismatch { border-left-color: var(--warn-text); }
.ref.needs_review { border-left-color: var(--none-text); }
.ref.missing_reference { border-left-color: var(--bad-text); }
.ref-head { display: flex; flex-wrap: wrap; gap: 0.35rem 0.6rem; align-items: center; }
.ref-id { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-weight: 700; font-size: 0.9rem; overflow-wrap: anywhere; color: var(--muted); }
.badge { display: inline-block; font-size: 0.76rem; font-weight: 700; letter-spacing: 0.02em; padding: 0.12rem 0.55rem; border-radius: 999px; border: 2px solid currentColor; }
.badge.verified { background: var(--ok-bg); color: var(--ok-text); }
.badge.metadata_mismatch { background: var(--warn-bg); color: var(--warn-text); }
.badge.needs_review { background: var(--none-bg); color: var(--none-text); }
.badge.flag, .badge.missing_reference { background: var(--bad-bg); color: var(--bad-text); }
.ref-title { margin: 0.35rem 0 0.1rem; font-weight: 600; overflow-wrap: anywhere; }
.headline { font-weight: 700; margin: 0.15rem 0 0.4rem; }
.headline.verified { color: var(--ok-text); }
.headline.metadata_mismatch { color: var(--warn-text); }
.headline.needs_review { color: var(--none-text); }
.evidence { display: grid; grid-template-columns: minmax(7rem, max-content) minmax(0, 1fr); gap: 0.2rem 0.9rem; margin: 0.3rem 0; font-size: 0.93rem; }
.evidence dt { color: var(--muted); font-weight: 600; }
.evidence dd { margin: 0; overflow-wrap: anywhere; }
.flag-list { list-style: none; padding: 0; margin: 0.4rem 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.3rem; font-size: 0.92rem; }
details.more { margin: 0.3rem 0 0; }
details.more > summary { font-size: 0.9rem; min-height: 36px; }
details.more .subhead { margin: 0.6rem 0 0.2rem; color: var(--muted); font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
.candidates .subhead { margin: 0 0 0.2rem; font-weight: 700; }
.says { margin: 0.2rem 0 0.4rem; padding-left: 0.7rem; border-left: 3px solid var(--border); font-size: 0.93rem; }
.read q { font-style: normal; overflow-wrap: anywhere; }
.reformat { background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 0.2rem 1rem 0.6rem; margin: 0.8rem 0; }
.reformat > summary { font-weight: 700; }
.reformat-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.7rem; margin: 0.3rem 0; }
.select { font: inherit; min-height: 44px; padding: 0.3rem 0.6rem; border: 2px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--text); max-width: 100%; }
.formatted h3 { margin-top: 0.8rem; }
.formatted h3:focus { outline: none; }
.bib { list-style: none; padding: 0; margin: 0.6rem 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.8rem; }
.bib li { border-left: 4px solid var(--border); padding-left: 0.8rem; }
.bib-entry { margin: 0; overflow-wrap: anywhere; }
.bib-meta { margin: 0.2rem 0 0; font-size: 0.85rem; color: var(--muted); }
.person { margin: 0.4rem 0 0; font-size: 0.85rem; color: var(--muted); }

.candidates { border-top: 1px dashed var(--border); margin-top: 0.6rem; padding-top: 0.5rem; }
.cand-list { list-style: none; padding: 0; margin: 0.4rem 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.6rem; }
.cand-list li { background: var(--bg); border: 1px solid var(--border-soft); border-radius: 10px; padding: 0.6rem 0.8rem; overflow-wrap: anywhere; font-size: 0.93rem; }
.cand-list .btn { margin-top: 0.4rem; }
.lookup { border: 2px dashed var(--accent); border-radius: var(--radius); padding: 0.9rem 1rem; margin: 0.8rem 0; background: var(--surface); }
.lookup ul { padding-left: 1.2rem; overflow-wrap: anywhere; font-size: 0.92rem; }
.lookup h3 { margin-bottom: 0.5rem; }

.not-checked { background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 1rem 1.2rem; margin: 1.5rem 0; scroll-margin-top: 1rem; }
.not-checked ul { margin: 0; padding-left: 1.2rem; }
.not-checked li { margin-bottom: 0.45rem; font-size: 0.95rem; }

@media (max-width: 34rem) {
  .evidence { grid-template-columns: 1fr; gap: 0; }
  .evidence dd { margin-bottom: 0.35rem; }
  .btn.primary { width: 100%; }
  .actions { flex-direction: column; align-items: stretch; }
  .tile { padding: 0.6rem 0.55rem; }
  .tile .what { display: none; }
  .tile .name { font-size: 0.85rem; }
  .toolbar { flex-direction: column; align-items: stretch; }
}
@media (min-width: 34.01rem) { .tile .name { font-size: 1rem; } }

@media (forced-colors: active) {
  .tile, .badge, .ref { border: 2px solid CanvasText; }
  .bar span { forced-color-adjust: none; }
}

/* Touch screens: every control is at least 44 px tall (Apple's and WCAG's recommended size). */
@media (pointer: coarse) {
  .chip, .btn.small, summary, details.more > summary, .legend summary, .notes summary, .link-btn { min-height: 44px; }
  .chip { padding-block: 0.4rem; }
  .choice input { width: 1.5rem; height: 1.5rem; }
  .bib li, .refs > li { scroll-margin-top: 1rem; }
}

/* Landscape phones are short: give the content the room. */
@media (max-height: 30rem) and (orientation: landscape) {
  .hero { padding-block: 0.8rem 0.5rem; }
  h1 { font-size: 1.5rem; margin-bottom: 0.3rem; }
  .lead { display: none; }
  textarea { min-height: 6rem; }
}

/* Very narrow screens (small phones, split view, large text). */
@media (max-width: 22rem) {
  .tile { padding: 0.5rem 0.4rem; }
  .tile .big { font-size: 1.2rem; }
  .segmented label { flex-basis: 100%; }
  .privacy-pill { border-radius: 14px; }
}