/* PeptologyRx — Research & Knowledge Center (learn.html) */
/* Reuses tokens + classes from site.css; only layout-specific styles live here. */

/* ---------- Hero / intro ---------- */
.learn-hero {
  padding-top: 4rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}
.learn-hero h1 { max-width: 18ch; margin-bottom: 1rem; }
.learn-hero-sub {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 46rem;
  margin-bottom: 2rem;
}

/* Quick jump-links */
.learn-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.learn-toc a {
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.5rem 1.15rem;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.learn-toc a:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-soft);
}

/* ---------- Peptide entries ---------- */
.learn-entry {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3rem;
  align-items: center;
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 90px;
}
.learn-entry--reverse .learn-media { order: 2; }

.learn-media {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--fill);
}
.learn-media img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.learn-text .badge { margin-bottom: 1rem; }
.learn-text h2 { margin: 0 0 1.25rem; }
.learn-dose {
  font-size: 1.25rem;
  color: var(--muted);
  font-style: italic;
  margin-left: 0.4rem;
}
.learn-text h3 {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin: 1.5rem 0 0.5rem;
}
.learn-text p { color: var(--muted); }

.learn-list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
.learn-list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--ink);
  font-size: 0.95rem;
}
.learn-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--sage);
}

.learn-note {
  margin-top: 1.5rem;
  font-size: 0.82rem;
  font-style: italic;
  color: var(--muted);
}

/* ---------- Research disclaimer band ---------- */
.learn-disclaimer {
  background: var(--forest);
  color: var(--cream);
  border-radius: var(--radius-xl);
  padding: 3.5rem;
  max-width: 52rem;
  margin: 0 auto;
  text-align: center;
}
.learn-disclaimer .science-eyebrow {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1rem;
  color: rgba(253, 250, 241, 0.7);
  display: block;
  margin-bottom: 1rem;
}
.learn-disclaimer h2 {
  color: var(--cream);
  margin-top: 0;
}
.learn-disclaimer p {
  color: rgba(253, 250, 241, 0.82);
  font-size: 1rem;
  max-width: 42rem;
  margin: 0 auto 1.75rem;
}
.learn-disclaimer .btn-primary {
  background: var(--sage);
  color: var(--ink);
}
.learn-disclaimer .btn-primary:hover { background: #b4d0a6; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .learn-entry {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding: 3rem 0;
  }
  /* Keep image above text on every entry when stacked */
  .learn-entry--reverse .learn-media { order: 0; }
  .learn-disclaimer { padding: 2.5rem 1.5rem; }
}