/* =====================================================================
   Heart Health Library pages (education/*.html)
   Matches the home page design: ivory and gold palette, Cormorant Garamond
   headings, DM Sans text, JetBrains Mono labels, with the glass finish
   from glass.css.
   ===================================================================== */
:root {
  --navy-950: #fbf8f2;
  --navy-900: #f4eee1;
  --navy-800: #ece2cc;
  --navy-700: #ddc99a;
  --teal-500: #8a6b2f;
  --teal-300: #6b5323;
  --gold-500: #c9a24f;
  --gold-300: #7a5a1f;
  --crimson: #b8393f;
  --ink: #191309;
  --ink-dim: #2e2517;
  --ink-dimmer: #3a2f1c;
  --cream: #241b0f;
  --line: rgba(42, 33, 22, 0.12);
  --display: 'Cormorant Garamond', serif;
  --body: 'DM Sans', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --ease: cubic-bezier(.16, .8, .28, 1);
  --header-h: 84px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-y: clamp(4.5rem, 9vw, 7rem);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  background: var(--navy-950); color: var(--ink);
  font-family: var(--body); font-size: 1.02rem; line-height: 1.65;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
[hidden] { display: none !important; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
ul, ol { padding: 0; }
::selection { background: var(--teal-500); color: #fff; }
h1, h2, h3, h4 { font-family: var(--display); font-weight: 500; letter-spacing: .01em; color: var(--cream); line-height: 1.15; }
h1 em, h2 em { font-style: italic; color: var(--teal-300); }
:focus-visible { outline: 2px solid var(--gold-500); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200; padding: 10px 16px; border-radius: 999px;
  background: var(--cream); color: var(--navy-950); font-family: var(--mono); font-size: .75rem;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

.wrap { width: 100%; max-width: calc(1240px + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.wrap--narrow { max-width: calc(780px + var(--gutter) * 2); }
.section { padding-block: var(--section-y); }
.section--tint { position: relative; }
[id] { scroll-margin-top: calc(var(--header-h) + 12px); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .6em; margin-bottom: 1rem;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; color: var(--gold-300);
}
.eyebrow::before { content: ''; width: 26px; height: 1px; background: var(--gold-500); }
.lede { color: var(--ink-dim); max-width: 640px; font-size: 1.05rem; margin-top: 1.2rem; }
.minor-heading {
  font-family: var(--mono); font-size: .7rem; font-weight: 400; letter-spacing: .2em; text-transform: uppercase;
  color: var(--gold-300); margin-bottom: 1.25rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  padding: .95rem 1.7rem; border-radius: 999px; border: 1px solid transparent;
  font-family: var(--mono); font-size: .76rem; letter-spacing: .05em; white-space: nowrap;
  transition: transform .4s var(--ease), background .4s, color .4s, border-color .4s, box-shadow .4s;
}
.btn i { font-size: 1.1em; }
.btn:hover { transform: translateY(-3px); }
.btn--sm { padding: .7rem 1.2rem; font-size: .72rem; }
.btn--lg { padding: 1.05rem 1.9rem; }
.btn--primary {
  color: var(--cream);
  background: linear-gradient(180deg, #dcbb6c 0%, var(--gold-500) 52%, #b88f3c 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.6), inset 0 -1px 0 rgba(90,60,10,.18), 0 12px 26px -12px rgba(140,100,30,.65);
}
.btn--ghost {
  color: var(--ink); border-color: var(--g-stroke);
  background: var(--g-sheen), var(--g-fill); box-shadow: var(--g-shadow);
}
.btn--ghost:hover { color: var(--teal-300); background: var(--g-sheen), var(--g-fill-hover); }

/* ---------- Header (same look as the home page) ---------- */
.site-header { position: sticky; top: 0; z-index: 100; padding: 1.1rem 0; transition: padding .5s var(--ease); }
.header-inner {
  max-width: 1240px; margin: 0 auto; padding: 0 var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
  border: 1px solid transparent; border-radius: 999px;
  transition: background .5s var(--ease), box-shadow .5s var(--ease), border-color .5s var(--ease), padding .5s var(--ease);
}
.site-header.is-scrolled { padding: .7rem 0; }
.site-header.is-scrolled .header-inner {
  width: calc(100% - 2 * clamp(.75rem, 3vw, 2rem)); max-width: 1220px; padding: .45rem .5rem .45rem 1rem;
  background: var(--g-sheen), linear-gradient(150deg, rgba(255,255,255,.72), rgba(255,252,245,.52));
  border-color: var(--g-stroke); box-shadow: var(--g-shadow);
  -webkit-backdrop-filter: var(--g-blur); backdrop-filter: var(--g-blur);
}
.brand { display: flex; align-items: center; gap: .9rem; min-width: 0; }
.brand-mark {
  flex: none; width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  font-family: var(--body); font-size: .95rem; color: var(--cream);
  border: 1px solid rgba(184,137,66,.35);
  background: linear-gradient(150deg, rgba(255,255,255,.75), rgba(255,255,255,.3));
  box-shadow: inset 0 1px 0 #fff, 0 0 0 5px rgba(184,137,66,.08);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; min-width: 0; }
.brand-name { font-family: var(--display); font-size: 1.45rem; font-weight: 600; color: var(--cream); white-space: nowrap; }
.brand-role {
  position: relative; margin-top: .3rem; padding-left: 1.3rem; white-space: nowrap;
  font-family: var(--mono); font-size: .6rem; letter-spacing: .2em; text-transform: uppercase; color: var(--gold-300);
}
.brand-role::before { content: ''; position: absolute; left: 0; top: 50%; width: 1rem; height: 1px; background: var(--gold-500); }

.site-nav { display: flex; align-items: center; gap: .4rem; }
.site-nav a:not(.btn) {
  padding: .5rem .9rem; border-radius: 999px; border: 1px solid rgba(255,255,255,.75);
  font-family: var(--mono); font-size: .74rem; letter-spacing: .03em; color: var(--ink-dim);
  background: linear-gradient(150deg, rgba(255,255,255,.55), rgba(255,255,255,.22));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 4px 12px -8px rgba(74,52,24,.25);
  transition: color .3s, background .3s, border-color .3s, transform .3s var(--ease);
}
.site-header.is-scrolled .site-nav a:not(.btn) { background: transparent; border-color: transparent; box-shadow: none; }
.site-nav a:not(.btn):hover, .site-nav a[aria-current="page"],
.site-header.is-scrolled .site-nav a[aria-current="page"] {
  color: var(--cream); background: var(--gold-500); border-color: var(--gold-500); transform: translateY(-2px);
}
.site-nav .nav-cta {
  margin-left: .4rem; color: var(--gold-300); border-color: var(--gold-500); box-shadow: none;
  background: linear-gradient(150deg, rgba(255,255,255,.6), rgba(233,207,142,.22));
}
.site-nav .nav-cta:hover { background: var(--gold-500); color: var(--cream); }
.nav-toggle {
  display: none; width: 44px; height: 44px; border-radius: 50%; place-items: center; font-size: 1.35rem; color: var(--cream);
  border: 1px solid var(--g-stroke); background: var(--g-sheen), var(--g-fill); box-shadow: var(--g-shadow);
}
@media (max-width: 1440px) {
  .site-nav a:not(.btn) { padding: .5rem .7rem; font-size: .7rem; }
}
@media (max-width: 1279px) {
  :root { --header-h: 72px; }
  .nav-toggle { display: grid; }
  .site-header.is-scrolled .header-inner { width: auto; max-width: none; padding: 0 var(--gutter); background: none; border-color: transparent; box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .site-header.is-scrolled, .site-header.menu-open {
    background: var(--g-sheen), linear-gradient(150deg, rgba(255,255,255,.8), rgba(255,252,245,.65));
    border-bottom: 1px solid rgba(255,255,255,.85); box-shadow: 0 10px 30px -18px rgba(74,52,24,.35);
    -webkit-backdrop-filter: var(--g-blur); backdrop-filter: var(--g-blur);
  }
  .site-nav {
    position: absolute; top: 100%; left: var(--gutter); right: var(--gutter); margin-top: .5rem;
    display: none; flex-direction: column; align-items: stretch; gap: .5rem; padding: 1rem;
    border-radius: 24px; border: 1px solid var(--g-stroke);
    background: linear-gradient(160deg, rgba(255,255,255,.96), rgba(250,246,236,.97)); box-shadow: var(--g-shadow);
  }
  .site-header.menu-open .site-nav { display: flex; animation: menu-in .3s var(--ease); }
  .site-nav a:not(.btn), .site-header.is-scrolled .site-nav a:not(.btn) {
    padding: .9rem 1.2rem; font-size: .8rem;
    background: linear-gradient(150deg, rgba(255,255,255,.7), rgba(255,255,255,.35)); border-color: rgba(255,255,255,.85);
    box-shadow: inset 0 1px 0 #fff, 0 6px 16px -10px rgba(74,52,24,.3);
  }
  .site-nav .nav-cta { margin: .3rem 0 0; }
}
@media (max-width: 420px) { .brand-role { display: none; } .brand-name { font-size: 1.25rem; } }
@keyframes menu-in { from { opacity: 0; transform: translateY(-8px); } }

/* ---------- Page heading ---------- */
.page-head { padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(2rem, 4vw, 3rem); }
.page-head h1 { font-size: clamp(2.7rem, 5.8vw, 4.8rem); line-height: 1.04; max-width: 16ch; }
.crumbs {
  display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; margin-bottom: 1.75rem;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-dimmer);
}
.crumbs a { color: var(--gold-300); }
.crumbs a:hover { text-decoration: underline; text-underline-offset: 3px; }
.crumbs i { font-size: .7rem; opacity: .6; }
.topic-hero-icon { width: 72px; height: 72px; border-radius: 22px; font-size: 2rem; margin-bottom: 1.5rem; }

/* ---------- Search ---------- */
.search-field { display: grid; gap: .55rem; max-width: 560px; margin-bottom: 1.75rem; }
.search-field label { font-family: var(--mono); font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold-300); }
.search-input { position: relative; }
.search-input i { position: absolute; left: 1.2rem; top: 50%; transform: translateY(-50%); font-size: 1.15rem; color: var(--gold-300); pointer-events: none; }
.search-input input {
  width: 100%; height: 56px; padding: 0 1.25rem 0 3rem; border-radius: 999px;
  border: 1px solid var(--g-stroke); background: var(--g-sheen), var(--g-fill); box-shadow: var(--g-shadow);
  font-size: 1rem; color: var(--ink); transition: border-color .3s, box-shadow .3s;
}
.search-input input::placeholder { color: rgba(58,47,28,.62); }
.search-input input:focus { outline: none; border-color: var(--gold-500); box-shadow: var(--g-shadow), 0 0 0 4px rgba(201,162,79,.18); }
.search-help { font-family: var(--mono); font-size: .7rem; color: var(--ink-dimmer); min-height: 1em; }

.note {
  display: grid; grid-template-columns: 28px 1fr; gap: .75rem; padding: 1.25rem 1.4rem; border-radius: 20px;
  border: 1px solid var(--g-stroke); background: var(--g-sheen), var(--g-fill); box-shadow: var(--g-shadow);
  color: var(--ink-dim); font-size: .94rem;
}
.note i { font-size: 1.35rem; color: var(--gold-300); }

/* ---------- Article ---------- */
.read-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 150; transform-origin: 0 50%; transform: scaleX(0);
  background: linear-gradient(90deg, var(--gold-500), var(--teal-500));
}
@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    .read-progress { animation: read-progress linear both; animation-timeline: scroll(root); }
  }
}
@keyframes read-progress { to { transform: scaleX(1); } }

.article-head { padding-block: clamp(2.25rem, 5vw, 3.75rem) 0; }
.article-head h1 { font-size: clamp(2.4rem, 5vw, 3.7rem); line-height: 1.06; }
.article-lede { font-size: clamp(1.1rem, 1.8vw, 1.25rem); color: var(--ink-dim); margin-top: 1.25rem; line-height: 1.6; }
.article-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.25rem; margin-top: 2rem;
  padding: .9rem 1rem .9rem .9rem; border-radius: 24px;
  border: 1px solid var(--g-stroke); background: var(--g-sheen), var(--g-fill); box-shadow: var(--g-shadow);
  font-family: var(--mono); font-size: .7rem; letter-spacing: .04em; color: var(--ink-dimmer);
}
.article-meta .by { display: flex; align-items: center; gap: .7rem; font-family: var(--body); font-size: .92rem; letter-spacing: 0; color: var(--cream); font-weight: 500; }
.article-meta .by img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; object-position: 50% 18%; border: 2px solid #fff; box-shadow: 0 4px 12px -6px rgba(74,52,24,.5); }
.article-meta .by small { display: block; font-weight: 400; font-size: .78rem; color: var(--ink-dimmer); }
.article-meta [data-article-meta] { display: flex; flex-wrap: wrap; gap: .25rem 1.1rem; }
.article-tools { display: flex; gap: .45rem; margin-left: auto; }
.tool-btn {
  display: inline-flex; align-items: center; gap: .4rem; height: 38px; padding: 0 .9rem; border-radius: 999px;
  border: 1px solid rgba(201,162,79,.4); background: rgba(255,255,255,.6); box-shadow: inset 0 1px 0 #fff;
  font-family: var(--mono); font-size: .68rem; letter-spacing: .04em; color: var(--ink-dim);
  transition: background .3s, color .3s, border-color .3s;
}
.tool-btn:hover, .tool-btn[aria-pressed="true"] { background: var(--gold-500); border-color: var(--gold-500); color: var(--cream); }
.tool-btn i { font-size: 1rem; }

.keypoints {
  margin-top: 2.25rem; padding: clamp(1.4rem, 3vw, 2rem); border-radius: 26px;
  border: 1px solid var(--g-stroke); background: var(--g-sheen), linear-gradient(150deg, rgba(255,255,255,.72), rgba(244,238,225,.5));
  box-shadow: var(--g-shadow);
}
.keypoints h2 { font-size: 1.6rem; display: flex; align-items: center; gap: .55rem; }
.keypoints h2 i { color: var(--gold-300); font-size: 1.35rem; }
.keypoints ul { list-style: none; margin-top: 1rem; display: grid; gap: .85rem; }
.keypoints li { display: grid; grid-template-columns: 24px 1fr; gap: .55rem; color: var(--ink); line-height: 1.6; }
.keypoints li::before { content: "\e182"; font-family: "Phosphor"; color: var(--gold-500); font-size: 1.1rem; line-height: 1.5; }

.prose { margin-top: 2.5rem; font-size: 1.08rem; line-height: 1.8; color: var(--ink-dim); }
.prose > * + * { margin-top: 1.15rem; }
.prose h2 { font-size: clamp(1.7rem, 3vw, 2.15rem); margin-top: 2.75rem; }
.prose h3 { font-size: 1.4rem; margin-top: 2rem; }
.prose strong { color: var(--cream); font-weight: 600; }
.prose a { color: var(--teal-300); text-decoration: underline; text-decoration-color: rgba(201,162,79,.6); text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.4rem; display: grid; gap: .6rem; }
.prose li::marker { color: var(--gold-500); }
.prose ol li::marker { font-family: var(--mono); font-size: .9em; }
.prose li { padding-left: .25rem; }

.callout {
  border-radius: 20px; padding: 1.25rem 1.4rem; font-size: 1.02rem;
  border: 1px solid var(--g-stroke); background: var(--g-sheen), var(--g-fill); box-shadow: var(--g-shadow);
}
.callout > * + * { margin-top: .6rem; }
.callout-title { display: flex; align-items: center; gap: .55rem; font-weight: 600; color: var(--cream); }
.callout-title i { font-size: 1.3rem; color: var(--gold-300); }
.callout ul { gap: .4rem; }
.callout--urgent {
  border-color: rgba(184,57,63,.45);
  background: radial-gradient(120% 80% at 0% 0%, rgba(255,255,255,.7), rgba(255,255,255,0) 50%), linear-gradient(135deg, rgba(226,84,90,.10), rgba(255,255,255,.42));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 12px 28px -16px rgba(184,57,63,.45);
}
.callout--urgent .callout-title i { color: var(--crimson); }
.callout--urgent li::marker { color: var(--crimson); }

.disclaimer { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); font-size: .9rem; color: var(--ink-dimmer); line-height: 1.6; }
html.text-large .prose { font-size: 1.28rem; }
html.text-large .keypoints li, html.text-large .article-lede { font-size: 1.22rem; }

.related { padding-block: clamp(3.5rem, 7vw, 5rem); margin-top: clamp(3rem, 6vw, 4.5rem); border-top: 1px solid var(--line); }
.related h2 { font-size: clamp(1.9rem, 3.6vw, 2.6rem); margin-bottom: 1.5rem; }
.related .link-arrow { margin-top: 1.75rem; }
@media (max-width: 640px) {
  .article-tools { margin-left: 0; width: 100%; }
  .tool-btn .tool-label { display: none; }
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; }
.footer-grid h2 { font-family: var(--mono); font-size: .68rem; font-weight: 400; letter-spacing: .2em; text-transform: uppercase; color: var(--gold-300); margin-bottom: 1rem; }
.footer-brand p { color: var(--ink-dimmer); margin-top: 1rem; font-size: .9rem; max-width: 38ch; }
.footer-links { list-style: none; display: grid; gap: .55rem; }
.footer-links a { color: var(--ink-dim); font-size: .92rem; }
.footer-links a:hover { color: var(--teal-300); }
.footer-emergency { font-size: .92rem; color: var(--ink-dimmer); }
.footer-emergency a { display: inline-block; margin-top: .4rem; font-family: var(--display); font-size: 1.9rem; font-weight: 600; color: var(--crimson); }
.footer-base {
  position: relative; display: flex; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap;
  margin-top: 3rem; padding-top: 1.5rem; font-size: .78rem; color: var(--ink-dimmer);
}
.footer-base::before { content: ""; position: absolute; top: 0; left: var(--gutter); right: var(--gutter); border-top: 1px solid var(--line); }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr; gap: 2rem; } }

/* ---------- Mobile quick actions ---------- */
.action-bar { display: none; }
@media (max-width: 1279px) {
  .action-bar {
    position: fixed; z-index: 90; left: .75rem; right: .75rem; bottom: calc(.75rem + env(safe-area-inset-bottom));
    display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; padding: .5rem; border-radius: 999px;
    border: 1px solid var(--g-stroke);
    background: var(--g-sheen), linear-gradient(150deg, rgba(255,255,255,.78), rgba(255,252,245,.6));
    box-shadow: var(--g-shadow); -webkit-backdrop-filter: var(--g-blur); backdrop-filter: var(--g-blur);
    transform: translateY(140%); transition: transform .45s var(--ease);
  }
  .action-bar.is-visible { transform: none; }
  .action-bar .btn { width: 100%; padding: .85rem .6rem; font-size: .7rem; }
  body { padding-bottom: 90px; }
}

/* ---------- Scroll reveal ---------- */
html.js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: calc(var(--i, 0) * 80ms); }
html.js [data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html.js [data-reveal] { opacity: 1; transform: none; transition: none; } }

/* ---------- Print ---------- */
@media print {
  .site-header, .site-footer, .action-bar, .article-tools, .related, .read-progress, .skip-link, .ambient { display: none !important; }
  body { background: #fff; color: #000; font-size: 12pt; padding: 0; }
  .keypoints, .callout, .article-meta { box-shadow: none; border: 1px solid #999; background: #fff; }
  html.js [data-reveal] { opacity: 1; transform: none; }
}