/* GH peptides beginner guide — surface-local teaching diagrams */

.teach-diagram {
  max-width: none;
  margin: 2rem 0 2.5rem;
  padding: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.teach-diagram figcaption {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--navy);
  margin: 0;
  padding: 1.1rem 1.25rem 0.85rem;
  text-transform: none;
  letter-spacing: -0.015em;
  border-bottom: 1px solid var(--line);
}

.teach-diagram .figure-note {
  margin: 0;
  padding: 0.75rem 1.25rem 1.05rem;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--ink-muted);
  border-top: 1px solid var(--line);
}

.article-prose .teach-diagram h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  text-transform: none;
  letter-spacing: -0.01em;
  color: var(--navy);
  margin: 0 0 0.45rem;
  scroll-margin-top: 0;
}

.teach-diagram p,
.teach-diagram li {
  max-width: none;
}

.teach-diagram :focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ── 1. Age decline bars ──────────────────────────────────── */

.gh-age {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 1.15rem 1.25rem 1.2rem;
  list-style: none;
}

.gh-age__row {
  display: grid;
  grid-template-columns: 4.5rem 1fr auto;
  gap: 0.75rem;
  align-items: center;
  margin: 0;
}

.gh-age__label {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--navy);
}

.gh-age__track {
  height: 0.7rem;
  background: rgba(10, 25, 47, 0.08);
  border-radius: var(--radius);
  overflow: hidden;
}

.gh-age__fill {
  display: block;
  height: 100%;
  background: var(--navy);
  border-radius: var(--radius);
}

.gh-age__fill--gold {
  background: var(--gold);
}

.gh-age__pct {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--ink-muted);
  white-space: nowrap;
}

/* ── 2. Two signals ───────────────────────────────────────── */

.gh-signals {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 1.15rem 1.25rem 1.05rem;
}

.gh-signals__path,
.gh-signals__gland {
  margin: 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
}

.gh-signals__gland {
  background: var(--navy);
  border-color: var(--navy);
  text-align: center;
}

.gh-signals__kicker,
.gh-signals__gland-label {
  margin: 0 0 0.2rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--navy);
}

.gh-signals__gland-label {
  color: #fff;
}

.gh-signals__names,
.gh-signals__gland-sub {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--ink-soft);
}

.gh-signals__gland-sub {
  color: var(--gold);
}

.gh-signals__pulse {
  margin: 0.15rem 0 0;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--gold);
}

@media (min-width: 720px) {
  .gh-signals {
    grid-template-columns: 1fr auto 1fr;
    grid-template-areas:
      "path1 gland path2"
      "pulse pulse pulse";
    align-items: stretch;
  }

  .gh-signals__path:first-of-type { grid-area: path1; }
  .gh-signals__gland { grid-area: gland; min-width: 8.5rem; }
  .gh-signals__path:last-of-type { grid-area: path2; }
  .gh-signals__pulse { grid-area: pulse; }
}

.gh-signals__key {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin: 0;
  padding: 0.85rem 1.25rem 1.15rem;
  list-style: none;
  border-top: 1px solid var(--line);
}

.gh-signals__key p {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--ink-soft);
}

@media (min-width: 720px) {
  .gh-signals__key {
    grid-template-columns: 1fr 1fr;
  }
}

/* ── 3. Insulin vs pulse ──────────────────────────────────── */

.gh-insulin {
  display: grid;
  grid-template-columns: 1fr;
}

.gh-insulin__panel {
  min-width: 0;
  padding: 1.1rem 1.25rem 1.2rem;
}

.gh-insulin__panel + .gh-insulin__panel {
  border-top: 1px solid var(--line);
}

.gh-insulin__svg {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 0 0.7rem;
}

.gh-insulin__caption {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--ink-soft);
}

@media (min-width: 640px) {
  .gh-insulin {
    grid-template-columns: 1fr 1fr;
  }

  .gh-insulin__panel + .gh-insulin__panel {
    border-top: none;
    border-left: 1px solid var(--line);
  }
}

/* ── 4. Three compounds, three jobs ───────────────────────── */

.gh-jobs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.gh-jobs li {
  margin: 0;
  padding: 1.1rem 1.25rem 1.15rem;
  border-bottom: 1px solid var(--line);
}

.gh-jobs li:last-child {
  border-bottom: none;
}

.gh-jobs p {
  margin: 0 0 0.45rem;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--ink-soft);
}

.gh-jobs p:last-child {
  margin-bottom: 0;
}

@media (min-width: 800px) {
  .gh-jobs {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .gh-jobs li {
    border-bottom: none;
  }

  .gh-jobs li + li {
    border-left: 1px solid var(--line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .teach-diagram,
  .teach-diagram * {
    animation: none !important;
    transition: none !important;
  }
}