/* Hoof education hub — editorial layout + diagrams */

.learn-hero {
  padding: clamp(2rem, 6vw, 3.5rem) clamp(1rem, 4vw, 2rem) clamp(2rem, 5vw, 3rem);
  max-width: var(--max);
  margin: 0 auto;
  text-align: center;
}

.learn-hero .eyebrow {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
  margin-bottom: 0.75rem;
}

.learn-hero .h1 {
  margin-bottom: 1rem;
}

.learn-hero .section-lead {
  max-width: 42rem;
  margin: 0 auto;
}

.learn-disclaimer {
  max-width: 44rem;
  margin: 0 auto 2rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(244, 176, 46, 0.35);
  background: rgba(244, 176, 46, 0.06);
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.learn-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem) clamp(4rem, 10vw, 6rem);
}

@media (min-width: 960px) {
  .learn-layout {
    grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
    align-items: start;
  }
}

.learn-toc {
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.35);
  font-size: 0.9rem;
}

.learn-toc h2 {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 1rem;
}

.learn-toc nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.learn-toc a {
  display: block;
  padding: 0.4rem 0.5rem;
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  border-left: 2px solid transparent;
}

.learn-toc a:hover,
.learn-toc a:focus-visible {
  color: var(--accent-hot);
  background: rgba(244, 176, 46, 0.06);
}

.learn-toc a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(244, 176, 46, 0.08);
}

.learn-body {
  min-width: 0;
}

.learn-section {
  scroll-margin-top: calc(var(--header-h) + 1rem);
  padding-bottom: clamp(2.5rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--border);
}

.learn-section:last-of-type {
  border-bottom: none;
}

.learn-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}

.learn-section h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 1.5rem 0 0.65rem;
  color: var(--text);
}

.learn-section p,
.learn-section li {
  color: var(--text-muted);
  max-width: 52rem;
}

.learn-section ul {
  padding-left: 1.25rem;
  line-height: 1.65;
}

.learn-figure {
  margin: 1.5rem 0 0.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
}

.learn-figure img,
.learn-figure__svg svg {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.learn-figure__svg {
  line-height: 0;
}

.learn-figure figcaption {
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.45;
  border-top: 1px solid var(--border);
}

.learn-callout {
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(167, 139, 250, 0.25);
  background: rgba(167, 139, 250, 0.06);
  font-size: 0.92rem;
  color: var(--text-muted);
}

.learn-glossary {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .learn-glossary {
    grid-template-columns: repeat(2, 1fr);
  }
}

.learn-glossary dt {
  font-weight: 700;
  color: var(--accent);
  margin: 0;
  font-size: 0.95rem;
}

.learn-glossary dd {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

@media (max-width: 959px) {
  .learn-toc {
    position: relative;
    top: auto;
  }

  .learn-toc nav ul {
    flex-wrap: wrap;
    flex-direction: row;
    gap: 0.5rem;
  }

  .learn-toc a {
    border-left: none;
    border-bottom: 2px solid transparent;
  }

  .learn-toc a.is-active {
    border-left: none;
    border-bottom-color: var(--accent);
  }
}