/* ==========================================================================
   膳软 softmeal — theme.css
   Dysphagia care knowledge hub. Audience: elderly patients + caregivers.
   Design principle: accessibility IS the design — high contrast, large type,
   clear hierarchy, and the official IDDSI framework palette used as a
   functional wayfinding / color-coding system throughout the site.
   ========================================================================== */

:root{
  /* Base palette */
  --bg: #FBF7F2;
  --surface: #FFFFFF;
  --ink: #23201C;
  --ink-soft: #4A443C;
  --border: #E4DDD1;
  --primary: #2E7D6B;
  --primary-dark: #1F5A4C;
  --primary-tint: #E4F0EC;
  --focus-ring: #1857A4;
  --link: #1F5A4C;

  /* Official IDDSI framework level colors (functional category coding) */
  --iddsi-0: #EFEFEF; /* Thin */
  --iddsi-1: #9AA0A6; /* Slightly Thick */
  --iddsi-2: #E8607D; /* Mildly Thick */
  --iddsi-3: #F2C13D; /* Liquidised / Moderately Thick */
  --iddsi-4: #57A55A; /* Pureed */
  --iddsi-5: #E88B2A; /* Minced & Moist */
  --iddsi-6: #3E7CC0; /* Soft & Bite-Sized */
  --iddsi-7: #333333; /* Regular / Easy to Chew */

  --radius: 14px;
  --shadow: 0 1px 3px rgba(35,32,28,.08), 0 6px 20px rgba(35,32,28,.06);
}

@media (prefers-color-scheme: dark){
  :root{
    --bg: #17140F;
    --surface: #221E18;
    --ink: #F3EDE3;
    --ink-soft: #C9C0B2;
    --border: #3A342A;
    --primary: #5CBBA3;
    --primary-dark: #8AD5C0;
    --primary-tint: #1E3831;
    --focus-ring: #7EB6FF;
    --link: #8AD5C0;

    --iddsi-0: #3A3A3A;
    --iddsi-1: #A9AFB5;
    --iddsi-2: #F0809A;
    --iddsi-3: #F6CE63;
    --iddsi-4: #74C177;
    --iddsi-5: #F0A254;
    --iddsi-6: #6FA1DA;
    --iddsi-7: #C9C9C9;

    --shadow: 0 1px 3px rgba(0,0,0,.35), 0 6px 20px rgba(0,0,0,.3);
  }
}
:root[data-theme="dark"]{
  --bg: #17140F; --surface: #221E18; --ink: #F3EDE3; --ink-soft: #C9C0B2;
  --border: #3A342A; --primary: #5CBBA3; --primary-dark: #8AD5C0;
  --primary-tint: #1E3831; --focus-ring: #7EB6FF; --link: #8AD5C0;
  --iddsi-0: #3A3A3A; --iddsi-1: #A9AFB5; --iddsi-2: #F0809A; --iddsi-3: #F6CE63;
  --iddsi-4: #74C177; --iddsi-5: #F0A254; --iddsi-6: #6FA1DA; --iddsi-7: #C9C9C9;
  --shadow: 0 1px 3px rgba(0,0,0,.35), 0 6px 20px rgba(0,0,0,.3);
}
:root[data-theme="light"]{
  --bg: #FBF7F2; --surface: #FFFFFF; --ink: #23201C; --ink-soft: #4A443C;
  --border: #E4DDD1; --primary: #2E7D6B; --primary-dark: #1F5A4C;
  --primary-tint: #E4F0EC; --focus-ring: #1857A4; --link: #1F5A4C;
  --iddsi-0: #EFEFEF; --iddsi-1: #9AA0A6; --iddsi-2: #E8607D; --iddsi-3: #F2C13D;
  --iddsi-4: #57A55A; --iddsi-5: #E88B2A; --iddsi-6: #3E7CC0; --iddsi-7: #333333;
  --shadow: 0 1px 3px rgba(35,32,28,.08), 0 6px 20px rgba(35,32,28,.06);
}

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

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

body{
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, 'PingFang SC', 'Microsoft YaHei', Roboto, Arial, sans-serif;
  font-size: 18px;
  line-height: 1.8;
  margin: 0;
  text-rendering: optimizeLegibility;
}

/* Layout container from the Cayman-derived default.html */
.container-lg{ max-width: 860px; }
.markdown-body{
  padding-top: .5rem;
}

/* ---------- Headings & hierarchy ---------- */
.markdown-body h1{
  font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.4rem);
  line-height: 1.3;
  font-weight: 800;
  color: var(--ink);
  margin: 0 0 1rem;
  border-bottom: 3px solid var(--primary);
  padding-bottom: .5rem;
}
.markdown-body h2{
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin: 2.4rem 0 1rem;
  padding-top: .2rem;
}
.markdown-body h3{
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--ink);
  margin: 1.8rem 0 .8rem;
}
.markdown-body p, .markdown-body li{ font-size: 1rem; }
.markdown-body ul, .markdown-body ol{ padding-left: 1.4em; }
.markdown-body li{ margin: .35em 0; }

/* ---------- Links & focus ---------- */
.markdown-body a{
  color: var(--link);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 2px;
  font-weight: 600;
}
.markdown-body a:hover{ color: var(--primary); }

:focus-visible{
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}
a:focus:not(:focus-visible){ outline: none; }

.skip-link{
  position: absolute;
  left: .75rem;
  top: .75rem;
  z-index: 10000;
  padding: .55rem .8rem;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform .2s ease, box-shadow .2s ease;
  box-shadow: var(--shadow);
}
.skip-link:focus{
  transform: translateY(0);
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}
.skip-link:not(:focus){
  pointer-events: none;
}

/* ---------- Blockquote / TL;DR callouts ---------- */
.markdown-body blockquote{
  background: var(--primary-tint);
  border-left: 6px solid var(--primary);
  margin: 1.4rem 0;
  padding: 1rem 1.2rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink);
}
.markdown-body blockquote p{ margin: .3em 0; }

/* ---------- Tables ---------- */
.markdown-body table{
  display: block;
  width: max-content;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-collapse: collapse;
  margin: 1.4rem 0;
  font-size: .95rem;
}
.markdown-body th, .markdown-body td{
  border: 1px solid var(--border);
  padding: .6em .8em;
  text-align: left;
}
.markdown-body th{ background: var(--primary-tint); color: var(--primary-dark); }

/* ---------- Code ---------- */
.markdown-body code{
  background: var(--primary-tint);
  color: var(--primary-dark);
  padding: .15em .4em;
  border-radius: 6px;
  font-size: .9em;
}

/* ---------- Site logo / home link ----------
   The layout renders a "site title" H1 link ahead of the page's own H1
   whenever site.title != page.title (true on almost every content page).
   That produced two stacked giant headings. De-emphasize the first one
   into a small eyebrow/breadcrumb so the real page title carries the
   visual hierarchy. Only applies when a second H1 actually follows it. */
.markdown-body:has(> h1 + h1) > h1:first-child{
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink-soft);
  border-bottom: none;
  margin: 0 0 1.1rem;
  padding-bottom: 0;
  text-transform: uppercase;
}
.markdown-body > h1:first-child a{
  text-decoration: none;
  color: inherit;
  border-bottom: none;
}

/* ==========================================================================
   Language switcher bar
   ========================================================================== */
#lang-bar{
  position: sticky;
  top: 0;
  z-index: 9999;
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  padding: 10px 16px;
  text-align: center;
  font-size: 15px;
  line-height: 1.6;
  box-shadow: var(--shadow);
}
#lang-bar a{
  color: var(--ink-soft);
  text-decoration: none;
  margin: 0 3px;
  padding: 5px 12px;
  border-radius: 999px;
  font-weight: 700;
  display: inline-block;
}
#lang-bar a:hover{ background: var(--primary-tint); color: var(--primary-dark); }
#lang-bar a.active{ background: var(--primary); color: #fff; }
#lang-bar a:focus-visible{ outline-offset: 1px; }
#lang-bar .sep{ color: var(--border); margin: 0 1px; }

/* ==========================================================================
   Homepage topic/category cards — IDDSI palette used as wayfinding accent
   ========================================================================== */
.cat-grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.1rem;
  margin: 1.5rem 0 2.5rem;
}
.cat-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.cat-card__tab{
  height: 8px;
  width: 100%;
}
.cat-card__body{ padding: 1.1rem 1.3rem 1.3rem; }
.cat-card h3{
  margin: 0 0 .7rem;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: .5em;
}
.cat-card h3 .cat-dot{
  width: 12px; height: 12px; border-radius: 50%;
  display: inline-block;
  border: 1px solid rgba(0,0,0,.15);
  flex: none;
}
.cat-card ul{ margin: 0; padding: 0; list-style: none; }
.cat-card li{ margin: 0; border-top: 1px solid var(--border); }
.cat-card li:first-child{ border-top: none; }
.cat-card a{
  display: block;
  padding: .55em 0;
  font-size: .96rem;
  font-weight: 500;
  line-height: 1.55;
  text-decoration: none;
  color: var(--ink-soft);
}
.cat-card a:hover, .cat-card a:focus-visible{ color: var(--primary-dark); text-decoration: underline; }

/* ==========================================================================
   IDDSI-level header band (article pages — auto-detected from title)
   ========================================================================== */
.iddsi-band{
  display: flex;
  align-items: center;
  gap: .7em;
  margin: 0 0 1.4rem;
  padding: .7em 1em;
  border-radius: var(--radius);
  background: var(--primary-tint);
  border: 1px solid var(--border);
  font-size: .95rem;
  font-weight: 700;
  color: var(--ink);
}
.iddsi-badge{
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4em;
  height: 2.4em;
  border-radius: 50%;
  background: var(--surface);
  color: var(--ink);
  font-weight: 800;
  font-size: 1rem;
  border: 4px solid var(--iddsi-4);
}
.iddsi-band__label{ color: var(--ink-soft); font-weight: 600; }

/* ---------- IDDSI level color assignment (used by JS via data-level) ---------- */
.iddsi-band[data-level="0"] .iddsi-badge{ border-color: var(--iddsi-0); box-shadow: inset 0 0 0 1px var(--border); }
.iddsi-band[data-level="1"] .iddsi-badge{ border-color: var(--iddsi-1); }
.iddsi-band[data-level="2"] .iddsi-badge{ border-color: var(--iddsi-2); }
.iddsi-band[data-level="3"] .iddsi-badge{ border-color: var(--iddsi-3); }
.iddsi-band[data-level="4"] .iddsi-badge{ border-color: var(--iddsi-4); }
.iddsi-band[data-level="5"] .iddsi-badge{ border-color: var(--iddsi-5); }
.iddsi-band[data-level="6"] .iddsi-badge{ border-color: var(--iddsi-6); }
.iddsi-band[data-level="7"] .iddsi-badge{ border-color: var(--iddsi-7); }

.iddsi-band[data-level="0"]{ border-left: 8px solid var(--iddsi-1); }
.iddsi-band[data-level="1"]{ border-left: 8px solid var(--iddsi-1); }
.iddsi-band[data-level="2"]{ border-left: 8px solid var(--iddsi-2); }
.iddsi-band[data-level="3"]{ border-left: 8px solid var(--iddsi-3); }
.iddsi-band[data-level="4"]{ border-left: 8px solid var(--iddsi-4); }
.iddsi-band[data-level="5"]{ border-left: 8px solid var(--iddsi-5); }
.iddsi-band[data-level="6"]{ border-left: 8px solid var(--iddsi-6); }
.iddsi-band[data-level="7"]{ border-left: 8px solid var(--iddsi-7); }

/* Category tab colors, cycled positionally by the homepage enhancer script */
.cat-card[data-c="0"] .cat-card__tab, .cat-card[data-c="0"] .cat-dot{ background: var(--iddsi-1); }
.cat-card[data-c="1"] .cat-card__tab, .cat-card[data-c="1"] .cat-dot{ background: var(--iddsi-2); }
.cat-card[data-c="2"] .cat-card__tab, .cat-card[data-c="2"] .cat-dot{ background: var(--iddsi-3); }
.cat-card[data-c="3"] .cat-card__tab, .cat-card[data-c="3"] .cat-dot{ background: var(--iddsi-4); }
.cat-card[data-c="4"] .cat-card__tab, .cat-card[data-c="4"] .cat-dot{ background: var(--iddsi-5); }
.cat-card[data-c="5"] .cat-card__tab, .cat-card[data-c="5"] .cat-dot{ background: var(--iddsi-6); }
.cat-card[data-c="6"] .cat-card__tab, .cat-card[data-c="6"] .cat-dot{ background: var(--iddsi-7); }

/* ==========================================================================
   IDDSI legend chip (used on the /iddsi/ standards pages if present)
   ========================================================================== */
.iddsi-legend{ display:flex; flex-wrap:wrap; gap:.5em; margin: 1rem 0 1.6rem; }
.iddsi-legend span{
  display:inline-flex; align-items:center; gap:.4em;
  padding:.35em .7em; border-radius:999px; border:1px solid var(--border);
  background:var(--surface); font-size:.85rem; font-weight:700;
}
.iddsi-legend i{ width:10px; height:10px; border-radius:50%; display:inline-block; border:1px solid rgba(0,0,0,.15); }

/* ---------- Founder footer line ---------- */
.markdown-body + p, body > p{ }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 640px){
  body{ font-size: 17px; }
  .container-lg{ padding-left: 1rem; padding-right: 1rem; }
  .markdown-body h1{ font-size: 1.5rem; }
  #lang-bar{ font-size: 13px; padding: 8px 6px; }
  #lang-bar a{ padding: 4px 8px; margin: 0 1px; }
  .cat-grid{ grid-template-columns: 1fr; }
}

img, video{ max-width: 100%; height: auto; border-radius: 10px; }