/* Respiratory Autotexts
 *
 * Identity: the field. Every block on this site is a piece of writing with
 * holes in it, and the holes are the point — they are where the patient goes.
 * So the empty bracket pair is the one thing given colour, in the yellow of the
 * highlighter you would have run over a paper proforma, and everything else on
 * the page stays out of its way.
 *
 * Paste blocks are set in mono because that is what they are: fixed-width plain
 * text on its way to a plain-text box in an electronic record. The mono face
 * is a promise that what you see is what lands on the clipboard.
 *
 * The accent is pine rather than the arterial red and venous blue of the sister
 * site — these two are related, not the same publication.
 *
 * No web fonts: this gets read on hospital wifi.
 */

:root {
  --paper: #f0f2ee;
  --card: #ffffff;
  --ink: #14181b;
  --muted: #59636c;
  --rule: #d5d9d3;
  --rule-soft: #e5e8e3;
  --pine: #14554c;      /* links, headings, the brand */
  --pine-deep: #0d3d36;
  --field: #fbe28c;     /* the highlighter */
  --field-edge: #e0bd4a;
  --field-ink: #3d3005;
  --focus: #14554c;

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --measure: 66ch;
  --gap: 1.5rem;
  --radius: 3px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #11151a;
    --card: #181d23;
    --ink: #e4e8e6;
    --muted: #94a0a8;
    --rule: #29313a;
    --rule-soft: #202730;
    --pine: #63c9b5;
    --pine-deep: #8bdcca;
    --field: #3a3213;
    --field-edge: #6d5c20;
    --field-ink: #f0d489;
    --focus: #63c9b5;
  }
}

:root[data-theme="dark"] {
  --paper: #11151a;
  --card: #181d23;
  --ink: #e4e8e6;
  --muted: #94a0a8;
  --rule: #29313a;
  --rule-soft: #202730;
  --pine: #63c9b5;
  --pine-deep: #8bdcca;
  --field: #3a3213;
  --field-edge: #6d5c20;
  --field-ink: #f0d489;
  --focus: #63c9b5;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  font-synthesis-weight: none;
}

a { color: var(--pine); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--pine-deep); }

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

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--card); padding: 0.6rem 1rem; z-index: 10;
}
.skip:focus { left: 0; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

.wrap { max-width: 62rem; margin: 0 auto; padding: 0 1.25rem; }

/* --- masthead ---------------------------------------------------------- */

.masthead {
  background: var(--card);
  border-bottom: 1px solid var(--rule);
  position: sticky; top: 0; z-index: 5;
}

.masthead__bar {
  max-width: 62rem; margin: 0 auto; padding: 0.7rem 1.25rem;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}

.wordmark {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}
.wordmark__field {
  background: var(--field);
  color: var(--field-ink);
  border-bottom: 1px solid var(--field-edge);
  padding: 0 0.15em;
  margin-left: 0.15em;
}

.search { position: relative; flex: 1 1 16rem; min-width: 12rem; }
.search input {
  width: 100%;
  font: inherit;
  font-size: 0.9rem;
  padding: 0.45rem 2.2rem 0.45rem 0.6rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
}
.search input::placeholder { color: var(--muted); }
.search__hint {
  position: absolute; right: 0.5rem; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--muted); border: 1px solid var(--rule); border-radius: 2px;
  padding: 0 0.3rem; background: var(--card); pointer-events: none;
}

.search__results {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0;
  background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius);
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.12);
  max-height: 70vh; overflow-y: auto; z-index: 20;
}
.search__results a {
  display: block; padding: 0.5rem 0.7rem; text-decoration: none;
  border-bottom: 1px solid var(--rule-soft); color: var(--ink);
}
.search__results a:last-child { border-bottom: 0; }
.search__results a:hover, .search__results a.on { background: var(--paper); }
.r-title { font-weight: 600; display: block; }
.r-meta { color: var(--muted); font-size: 0.82rem; }

.nav {
  max-width: 62rem; margin: 0 auto; padding: 0 1.25rem 0.5rem;
  display: flex; flex-wrap: wrap; gap: 0.25rem 1rem;
}
.navgroup { position: relative; }
.navgroup summary {
  cursor: pointer; list-style: none;
  font-size: 0.8rem; letter-spacing: 0.04em; text-transform: uppercase;
  font-weight: 600; color: var(--muted); padding: 0.25rem 0;
}
.navgroup summary::-webkit-details-marker { display: none; }
.navgroup[open] summary, .navgroup summary:hover { color: var(--ink); }
.navgroup ul {
  position: absolute; top: 100%; left: -0.6rem; z-index: 20;
  margin: 0; padding: 0.4rem 0; list-style: none; min-width: 12rem;
  background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius);
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.12);
}
.navgroup li a {
  display: block; padding: 0.3rem 0.9rem; text-decoration: none;
  font-size: 0.9rem; color: var(--ink);
}
.navgroup li a:hover { background: var(--paper); color: var(--pine); }

/* --- headings ---------------------------------------------------------- */

h1 {
  font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.022em;
  font-weight: 650;
  margin: 0 0 0.5rem;
  max-width: 22ch;
}
h2 {
  font-size: 1.1rem; letter-spacing: -0.01em; font-weight: 650;
  margin: 2rem 0 0.6rem;
}
h3 { font-size: 0.95rem; font-weight: 650; margin: 1.2rem 0 0.4rem; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 0.6rem;
}
.eyebrow a { color: var(--muted); text-decoration: none; }
.eyebrow a:hover { color: var(--pine); text-decoration: underline; }
.eyebrow__sep { opacity: 0.5; margin: 0 0.35em; }

.pagehead { padding: 2rem 0 1.25rem; border-bottom: 1px solid var(--rule); margin-bottom: 1.5rem; }
.pagehead__blurb { color: var(--muted); max-width: var(--measure); margin: 0.4rem 0 0; }
.pagehead__guidelines { font-size: 0.88rem; color: var(--muted); margin: 0.8rem 0 0; }
.pagehead__warn {
  margin: 1rem 0 0; padding: 0.7rem 0.9rem;
  border-left: 3px solid var(--field-edge);
  background: var(--card);
  font-size: 0.88rem; color: var(--muted); max-width: var(--measure);
}

/* --- hero -------------------------------------------------------------- */

.hero {
  display: grid; gap: 2rem;
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--rule);
}
@media (min-width: 60rem) {
  .hero { grid-template-columns: 1fr 1.05fr; align-items: start; gap: 3rem; }
}
.hero__lede { max-width: 42ch; margin: 0 0 1rem; }
.hero__note {
  font-size: 0.88rem; color: var(--muted); max-width: 42ch; margin: 0;
  padding-left: 0.9rem; border-left: 3px solid var(--field);
}
.hero__demo { min-width: 0; }
.hero__caption { font-size: 0.85rem; color: var(--muted); margin: 0.6rem 0 0; }

/* --- the paste block --------------------------------------------------- */

.block {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0 0 1rem;
}

.block__head {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.45rem 0.6rem 0.45rem 0.85rem;
  border-bottom: 1px solid var(--rule-soft);
  background: linear-gradient(var(--paper), var(--card));
}
.block__label {
  font-family: var(--mono); font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.block__count {
  margin-left: auto; font-family: var(--mono); font-size: 0.72rem;
  color: var(--muted); white-space: nowrap;
}

.copy {
  font: inherit; font-size: 0.8rem; font-weight: 600;
  padding: 0.25rem 0.85rem;
  border: 1px solid var(--pine); border-radius: var(--radius);
  background: var(--pine); color: var(--card);
  cursor: pointer; white-space: nowrap;
}
.copy:hover { background: var(--pine-deep); border-color: var(--pine-deep); }
.copy[data-state="done"] {
  background: var(--card); color: var(--pine);
}
.copy[data-state="failed"] { background: var(--card); color: var(--ink); border-color: var(--rule); }

.paste {
  margin: 0;
  padding: 1rem 1.1rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  overflow-x: auto;
  tab-size: 4;
}

/* On a block's own page the whole thing is shown: the page exists to display it,
   and a scrollbar inside a scrolling page is a way to hide the last third of a
   template from someone who does not realise it is there. Only the front-page
   sample is capped. */
.hero .paste { max-height: 30rem; overflow-y: auto; }

/* The signature. Styling only: textContent still yields the bracket pair
   exactly as written, so the clipboard gets plain text. */
.f {
  background: var(--field);
  color: var(--field-ink);
  border-bottom: 1px solid var(--field-edge);
  border-radius: 1px;
  padding: 0 0.1em;
}

/* --- field strip ------------------------------------------------------- */

.fields {
  margin: 0 0 1rem;
  padding: 0.7rem 0.9rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--field-edge);
  border-radius: var(--radius);
}
.fields__label {
  display: block;
  font-family: var(--mono); font-size: 0.68rem;
  text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted);
  margin-bottom: 0.4rem;
}
.fields__list {
  margin: 0; padding: 0; list-style: none;
  display: flex; flex-wrap: wrap; gap: 0.3rem 1rem;
  font-size: 0.84rem;
}
.fields__list li { display: flex; align-items: baseline; gap: 0.35rem; }
.fields__n {
  font-family: var(--mono); font-size: 0.7rem; color: var(--muted);
  min-width: 1.1em; text-align: right;
}
.fields__more { margin: 0.5rem 0 0; font-size: 0.8rem; color: var(--muted); }

/* --- the block page ---------------------------------------------------- */

.text { padding: 2rem 0 1rem; }
.text__head { margin-bottom: 1.25rem; }
.text__summary { color: var(--muted); max-width: var(--measure); margin: 0; }

.notes p, .why__lede, .prose p, .variant__note, .localblock__note, .localnote p {
  max-width: var(--measure);
}
.notes p { margin: 0; }
.why { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); }
.why__lede { color: var(--muted); font-size: 0.88rem; margin: 0 0 1rem; }

.sources { list-style: none; margin: 0; padding: 0; }
.sources li {
  padding: 0.55rem 0; border-bottom: 1px solid var(--rule-soft);
  max-width: var(--measure);
}
.sources li:last-child { border-bottom: 0; }
.sources__name { font-weight: 600; display: block; font-size: 0.92rem; }
.sources__note { color: var(--muted); font-size: 0.88rem; }

.trials ul { list-style: none; margin: 0; padding: 0; }
.trials li {
  padding: 0.4rem 0; border-bottom: 1px solid var(--rule-soft);
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.5rem;
  max-width: var(--measure); font-size: 0.9rem;
}
.trials li:last-child { border-bottom: 0; }
.trials__acronym { font-family: var(--mono); font-weight: 600; text-decoration: none; }
.trials__acronym:hover { text-decoration: underline; }
.trials__year { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }
.trials__summary { color: var(--muted); flex: 1 1 16rem; }
.trials__source { font-size: 0.82rem; color: var(--muted); margin: 0.8rem 0 0; }

.variant { margin-bottom: 1.5rem; }
.variant__note { color: var(--muted); font-size: 0.9rem; margin: 0 0 0.6rem; }

.localnote {
  margin-top: 2rem; padding: 0.9rem 1rem;
  background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius);
}
.localnote h2 { margin-top: 0; }
.localnote p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.text__foot {
  margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--rule);
  font-size: 0.85rem; color: var(--muted);
}
.text__foot p { margin: 0.25rem 0; }

.localblock { margin-bottom: 2rem; }

/* --- browsing ---------------------------------------------------------- */

.browse { padding: 2rem 0; }
.browse__head { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.browse__head h2 { margin: 0; }
.browse__hint { color: var(--muted); font-size: 0.85rem; margin: 0; }
.browse__hint kbd {
  font-family: var(--mono); font-size: 0.75rem;
  border: 1px solid var(--rule); border-radius: 2px; padding: 0 0.25rem;
  background: var(--card);
}

.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 1rem 0 1.5rem; }
.chip {
  font: inherit; font-size: 0.8rem;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--rule); border-radius: 100px;
  background: var(--card); color: var(--muted); cursor: pointer;
}
.chip:hover { color: var(--ink); }
.chip--on { background: var(--ink); border-color: var(--ink); color: var(--paper); }

.topicblock { margin-bottom: 2rem; }
.topicblock__name {
  font-family: var(--mono); font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 0.12em;
  margin: 0 0 0.6rem; padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--rule);
}
.topicblock__name a { color: var(--muted); text-decoration: none; }
.topicblock__name a:hover { color: var(--pine); }

.cards {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 0.6rem;
}
@media (min-width: 44rem) { .cards { grid-template-columns: 1fr 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  display: flex; flex-direction: column; gap: 0.4rem;
}
.card:hover { border-color: var(--muted); }
.card__link { text-decoration: none; color: inherit; display: block; }
.card__kind {
  display: inline-block;
  font-family: var(--mono); font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted);
  margin-bottom: 0.25rem;
}
.card__title { display: block; font-weight: 600; line-height: 1.3; }
.card__link:hover .card__title { color: var(--pine); text-decoration: underline; }
.card__summary { display: block; color: var(--muted); font-size: 0.86rem; margin-top: 0.2rem; }
.card__meta {
  margin-top: auto; padding-top: 0.3rem;
  display: flex; gap: 0.75rem; align-items: baseline;
  font-size: 0.78rem; color: var(--muted);
}
.card__meta a { color: var(--muted); }
.card__fields { font-family: var(--mono); margin-left: auto; }

.noresults, .empty { color: var(--muted); max-width: var(--measure); }

.related { margin-top: 2rem; }

/* --- prose ------------------------------------------------------------- */

.prose { padding-bottom: 2rem; }
.prose h2 { margin-top: 2rem; }
.prose code {
  font-family: var(--mono); font-size: 0.85em;
  background: var(--card); border: 1px solid var(--rule-soft);
  border-radius: 2px; padding: 0 0.25em;
}

/* --- tooltip and toast ------------------------------------------------- */

.tip {
  position: absolute; z-index: 30; max-width: 26rem;
  background: var(--ink); color: var(--paper);
  font-size: 0.82rem; line-height: 1.4;
  padding: 0.4rem 0.6rem; border-radius: var(--radius);
  pointer-events: none;
}

.shout {
  position: fixed; left: 50%; bottom: 1.5rem; transform: translateX(-50%);
  background: var(--ink); color: var(--paper);
  font-size: 0.85rem; padding: 0.5rem 1rem; border-radius: 100px;
  z-index: 40; opacity: 0; transition: opacity 140ms ease;
  pointer-events: none;
}
.shout[data-on] { opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

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

.footer {
  border-top: 1px solid var(--rule);
  margin-top: 3rem; padding-top: 1.25rem; padding-bottom: 2.5rem;
  font-size: 0.85rem; color: var(--muted);
}
.footer p { max-width: var(--measure); }
.footer__disclaimer {
  border-left: 3px solid var(--field-edge);
  padding-left: 0.9rem;
}
.footer__meta { font-size: 0.8rem; }

@media print {
  .masthead, .footer, .copy, .chips, .search { display: none; }
  .block, .fields { border: 1px solid #999; }
  .f { background: none; border-bottom: 1px solid #999; }
}