/* 傷口護理知識 · Wound Care Notes  v1.0.0
   Warm paper + sage/clay healthcare notes. Distinct from CNE 手帳. */
:root {
  --paper: #f4efe4;
  --paper-deep: #e8dfd0;
  --card: #fffbf4;
  --ink: #1c2a24;
  --ink-soft: #3d4a43;
  --muted: #5c6b64;
  --line: #d9cfc0;
  --sage: #2f5d4e;
  --sage-mid: #3f6f5e;
  --sage-soft: #e4efe9;
  --clay: #b04a35;
  --clay-deep: #8c3a2a;
  --clay-soft: #f8e6e0;
  --gold: #8a6a3b;
  --gold-soft: #f3ead6;
  --alert: #8e1c1c;
  --alert-bg: #fbecea;
  --urgent: #8a4b00;
  --urgent-bg: #f8edd9;
  --prompt: #1e4a6d;
  --prompt-bg: #e7f0f6;
  --care: #2f5d4e;
  --care-bg: #e4efe9;
  --shadow: 0 10px 28px rgba(28, 42, 36, 0.08);
  --radius: 18px;
  --header-h: 56px;
  --font-ui: "PingFang TC", "Noto Sans TC", "Hiragino Sans CNS", "Microsoft JhengHei", "Heiti TC", system-ui, -apple-system, sans-serif;
  --font-display: "Songti TC", "Noto Serif TC", "PMingLiU", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
  background: var(--paper);
}
body {
  font-family: var(--font-ui);
  color: var(--ink);
  background:
    radial-gradient(1200px 400px at 50% -80px, rgba(47, 93, 78, 0.08), transparent 60%),
    var(--paper);
  line-height: 1.55;
  min-height: 100dvh;
}
img { max-width: 100%; }
a { color: var(--sage); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid var(--clay);
  outline-offset: 2px;
}
.skip {
  position: absolute;
  left: -999px;
  top: 0;
}
.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 50;
  background: var(--card);
  padding: 8px 12px;
  border-radius: 8px;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: var(--header-h);
  padding: 8px 12px;
  padding-top: max(8px, env(safe-area-inset-top));
  background: rgba(244, 239, 228, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.icon-btn, .lang-toggle, .back-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--sage);
  font: inherit;
  min-width: 44px;
  min-height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  text-decoration: none;
}
.icon-btn:active, .lang-toggle:active, .back-btn:active { background: var(--sage-soft); }
.back-btn[hidden] { visibility: hidden; pointer-events: none; }
.brand {
  flex: 1;
  min-width: 0;
  text-align: center;
  text-decoration: none;
  color: inherit;
}
.brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand-sub {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 1px;
}
.lang-toggle {
  font-weight: 700;
  font-size: 0.85rem;
  border: 1.5px solid var(--line);
  background: var(--card);
  color: var(--ink-soft);
  padding: 0 10px;
}
.lang-toggle span[data-on="true"] { color: var(--sage); }

main {
  width: min(42rem, 100%);
  margin: 0 auto;
  padding: 16px 16px 48px;
  padding-bottom: max(48px, env(safe-area-inset-bottom));
}

.hero {
  padding: 8px 4px 18px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  line-height: 1.25;
  margin: 0 0 8px;
  font-weight: 700;
}
.hero p.lead {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.search-box {
  display: flex;
  gap: 8px;
  margin: 16px 0 8px;
}
.search-box input {
  flex: 1;
  min-height: 48px;
  border: 1.5px solid var(--line);
  border-radius: 14px;
  padding: 10px 14px;
  font: inherit;
  background: var(--card);
  color: var(--ink);
}
.search-box button {
  min-width: 48px;
  min-height: 48px;
  border: 0;
  border-radius: 14px;
  background: var(--sage);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.disclaimer, .callout, .dont, .note, .flag {
  border-radius: 14px;
  padding: 12px 14px;
  margin: 14px 0;
}
.disclaimer {
  background: var(--gold-soft);
  border: 1px solid #e2d3ae;
  color: var(--ink-soft);
  font-size: 0.9rem;
}
.disclaimer strong { color: var(--gold); display: block; margin-bottom: 4px; font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; }
.callout { background: var(--sage-soft); border-left: 4px solid var(--sage); }
.dont { background: var(--clay-soft); border-left: 4px solid var(--clay); }
.note { background: var(--card); border: 1px dashed var(--line); color: var(--ink-soft); }
.callout h3, .dont h3, .note h3, .flag h3 {
  margin: 0 0 6px;
  font-size: 0.95rem;
}

.section-grid, .topic-list, .search-results { display: grid; gap: 12px; margin-top: 8px; }
.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 16px 16px 18px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  min-height: 72px;
}
.card:active { transform: translateY(1px); }
.card-kicker {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 4px;
}
.card h2, .card h3 {
  font-family: var(--font-display);
  margin: 0 0 6px;
  font-size: 1.15rem;
  line-height: 1.3;
}
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.card-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}
.chev { color: var(--sage); font-size: 1.2rem; line-height: 1; margin-top: 2px; }

.crumbs {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 12px;
}
.crumbs a { color: var(--sage); text-decoration: none; font-weight: 600; }

article.topic h1 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  line-height: 1.28;
  margin: 0 0 10px;
}
.summary { color: var(--ink-soft); margin: 0 0 8px; }
.topic h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 1.4rem 0 0.5rem;
  padding-top: 0.2rem;
  border-top: 0;
  color: var(--sage);
}
.topic p { margin: 0.4rem 0 0.7rem; }
.topic ul, .topic ol { margin: 0.3rem 0 0.9rem; padding-left: 1.2rem; }
.topic li { margin: 0.28rem 0; }
.topic li::marker { color: var(--sage-mid); }

.sources {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.sources h2 { color: var(--gold); margin-top: 0; }
.sources ol { padding-left: 1.2rem; }
.sources a { word-break: break-word; font-size: 0.9rem; }
.sources li { margin: 0.45rem 0; color: var(--ink-soft); }

/* Quick-reference rows */
.qr-group { margin: 1.1rem 0 1.4rem; }
.qr-group h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pill {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
}
.pill-emergency { background: var(--alert); color: #fff; }
.pill-urgent { background: var(--urgent); color: #fff; }
.pill-prompt { background: var(--prompt); color: #fff; }
.pill-care { background: var(--sage); color: #fff; }

.qr-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  margin: 8px 0;
  display: grid;
  gap: 6px;
}
.qr-item.emergency {
  background: var(--alert-bg);
  border-color: #e3b6b6;
  border-left: 5px solid var(--alert);
}
.qr-item.urgent {
  background: var(--urgent-bg);
  border-color: #e4d2a8;
  border-left: 5px solid var(--urgent);
}
.qr-item.prompt {
  background: var(--prompt-bg);
  border-color: #b9cfe0;
  border-left: 5px solid var(--prompt);
}
.qr-item.care {
  border-left: 5px solid var(--sage);
}
.qr-sign { font-weight: 700; }
.qr-action { color: var(--ink-soft); font-size: 0.95rem; }

.footer-note {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}
.footer-note a { color: var(--sage); }

.empty { text-align: center; color: var(--muted); padding: 2rem 1rem; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}
@media (min-width: 720px) {
  .section-grid { grid-template-columns: 1fr 1fr; }
}