/* ==========================================================================
   Furry Peptides — Shared Design System
   ========================================================================== */

:root {
  --pine: #1f3a2e;
  --pine-dark: #142720;
  --pine-light: #2d5443;
  --clay: #c1622d;
  --clay-dark: #9c4c21;
  --clay-light: #f3e3d5;
  --cream: #faf7f1;
  --cream-alt: #f2ece1;
  --ink: #24291f;
  --muted: #5c6459;
  --border: #e3ddd0;
  --card: #ffffff;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 30px rgba(31, 58, 46, 0.08);
  --maxw: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  font-size: 17px;
}
h1, h2, h3, h4, .display {
  font-family: 'Fraunces', Georgia, serif;
  color: var(--pine-dark);
  line-height: 1.2;
  font-weight: 600;
}
a { color: var(--clay-dark); text-decoration-thickness: 1px; }
a:hover { color: var(--clay); }
img { max-width: 100%; }
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}
.eyebrow {
  display: inline-block;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--clay-dark);
  margin-bottom: 14px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  background: var(--pine-dark);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 1.25rem;
  text-decoration: none;
}
.logo svg { flex-shrink: 0; }
.logo:hover { color: #fff; }
.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: rgba(255,255,255,0.86);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a.active { border-bottom: 2px solid var(--clay); padding-bottom: 4px; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
}
@media (max-width: 820px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--pine-dark);
    flex-direction: column;
    gap: 0;
    padding: 8px 0 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 28px; display: block; }
  .nav-toggle { display: block; }
}

/* ---------- Cross-link banner (PeptideReport.ai) ---------- */
.crosslink-bar {
  background: var(--clay-light);
  border-bottom: 1px solid #ecd3b8;
  padding: 10px 0;
  font-size: 0.88rem;
  text-align: center;
  color: var(--clay-dark);
}
.crosslink-bar .wrap { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.crosslink-bar a { color: var(--pine-dark); font-weight: 700; text-decoration: underline; }
.crosslink-bar a:hover { color: var(--clay); }

.mid-crosslink {
  background: #eaf1ed;
  border: 1px solid #cfe0d6;
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 34px 0;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.mid-crosslink p { margin: 0; color: var(--pine-dark); font-size: 0.98rem; max-width: 620px; }
.mid-crosslink p strong { color: var(--pine); }
.mid-crosslink a.btn-small {
  display: inline-block;
  background: var(--pine);
  color: #fff;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 10px 20px;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
}
.mid-crosslink a.btn-small:hover { background: var(--pine-light); }

.cta-band.pine { background: linear-gradient(135deg, var(--pine), var(--pine-dark)); }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  font-size: 0.85rem;
  color: var(--muted);
  padding: 18px 0 0;
}
.breadcrumbs a { color: var(--muted); }
.breadcrumbs .sep { margin: 0 6px; }

/* ---------- Hero ---------- */
.hero {
  padding: 56px 0 48px;
}
.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3rem);
  margin: 0 0 18px;
  max-width: 820px;
}
.hero p.lead {
  font-size: 1.18rem;
  color: var(--muted);
  max-width: 680px;
  margin: 0 0 22px;
}
.hero-page {
  background: linear-gradient(160deg, var(--pine), var(--pine-dark));
  color: #fff;
}
.hero-page h1 { color: #fff; }
.hero-page p.lead { color: rgba(255,255,255,0.85); }
.hero-page .eyebrow { color: var(--clay-light); }

.hero-flex { display: flex; align-items: center; gap: 44px; }
.hero-flex .hero-text { flex: 1.15; min-width: 0; }
.hero-flex .hero-media { flex: 1; text-align: center; }
.hero-flex .hero-media img { width: 100%; max-width: 380px; display: block; margin: 0 auto; }
@media (max-width: 860px) {
  .hero-flex { flex-direction: column-reverse; gap: 24px; }
  .hero-flex .hero-media img { max-width: 260px; }
}

.hero-banner-strip { text-align: center; margin: 30px 0 6px; }
.hero-banner-strip img { max-width: 420px; width: 100%; border-radius: var(--radius-lg); }

.card .icon-badge { width: 44px; height: 44px; margin-bottom: 12px; display: block; }
.article-row .row-icon { width: 56px; height: 56px; flex-shrink: 0; }
.article-row { align-items: flex-start; }

.pill-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.pill {
  background: rgba(255,255,255,0.14);
  color: #fff;
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 0.86rem;
}
.pill.light { background: var(--clay-light); color: var(--clay-dark); font-weight: 600; }

/* ---------- Layout: article with sidebar TOC ---------- */
.article-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  padding: 48px 0 64px;
  align-items: start;
}
@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; }
}
.side-toc {
  position: sticky;
  top: 90px;
  font-size: 0.9rem;
}
.side-toc .toc-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 10px;
}
.side-toc ul { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--border); }
.side-toc li a {
  display: block;
  padding: 7px 0 7px 16px;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -2px;
}
.side-toc li a:hover { color: var(--pine-dark); border-left-color: var(--clay); }

.prose h2 { font-size: 1.6rem; margin: 44px 0 14px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.2rem; margin: 30px 0 10px; color: var(--pine); }
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 22px; }
.prose li { margin-bottom: 8px; }
.reading-meta { color: var(--muted); font-size: 0.88rem; margin-bottom: 8px; }

.pullquote {
  border-left: 4px solid var(--clay);
  background: var(--clay-light);
  padding: 18px 24px;
  margin: 28px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: 'Fraunces', serif;
  font-size: 1.15rem;
  color: var(--pine-dark);
}

.callout {
  background: var(--cream-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 26px 0;
}
.callout.warn {
  background: #fbeee6;
  border-color: #eec7ab;
}
.callout strong { color: var(--clay-dark); }
.callout.pine {
  background: #eaf1ed;
  border-color: #cfe0d6;
}
.callout.pine strong { color: var(--pine); }

/* ---------- Cards / grids ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 760px) {
  .grid, .grid.cols-3 { grid-template-columns: 1fr; }
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 10px; font-size: 1.08rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.96rem; }
.card .tag {
  display: inline-block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--pine);
  background: #eaf1ed;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.section { padding: 56px 0; }
.section.alt { background: var(--cream-alt); }
.section-head { max-width: 680px; margin-bottom: 32px; }
.section-head h2 { font-size: 1.9rem; margin: 0 0 12px; }
.section-head p { color: var(--muted); margin: 0; }

/* ---------- Article preview list (Topics hub) ---------- */
.article-row {
  display: flex;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
}
.article-row:last-child { border-bottom: none; }
.article-row .num {
  font-family: 'Fraunces', serif;
  font-size: 1.6rem;
  color: var(--clay);
  flex-shrink: 0;
  width: 44px;
}
.article-row h3 { margin: 0 0 8px; font-size: 1.2rem; }
.article-row p { margin: 0 0 10px; color: var(--muted); }
.article-row a.read-link { font-weight: 600; font-size: 0.92rem; }

/* ---------- FAQ ---------- */
details.faq {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  padding: 2px 22px;
}
details.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 16px 0;
  color: var(--pine-dark);
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-family: 'Fraunces', serif;
  font-size: 1.05rem;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; color: var(--clay); font-size: 1.4rem; flex-shrink: 0; }
details.faq[open] summary::after { content: "\2212"; }
details.faq p { margin: 0 0 18px; color: var(--muted); }
details.faq .faq-cat {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--clay-dark);
  font-weight: 700;
  margin-bottom: 6px;
}

/* ---------- Glossary ---------- */
dl.glossary { margin: 0; }
dl.glossary div {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
@media (max-width: 700px) { dl.glossary div { grid-template-columns: 1fr; gap: 4px; } }
dl.glossary dt { font-weight: 700; color: var(--pine-dark); font-family: 'Fraunces', serif; }
dl.glossary dd { margin: 0; color: var(--muted); }

/* ---------- Steps ---------- */
ol.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; }
ol.steps li {
  counter-increment: step;
  position: relative;
  padding: 4px 0 22px 46px;
  margin: 0;
}
ol.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--pine);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: 'Fraunces', serif;
  font-size: 0.95rem;
}
ol.steps li strong { color: var(--pine-dark); display: block; margin-bottom: 4px; }

/* ---------- Table ---------- */
.table-scroll { overflow-x: auto; }
table.compare { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
table.compare th, table.compare td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.compare th {
  color: var(--pine-dark);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--cream-alt);
}

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--clay-dark), var(--clay));
  color: #fff;
  text-align: center;
  padding: 64px 0;
}
.cta-band h2 { color: #fff; }
.cta-band p { max-width: 560px; margin: 0 auto 26px; color: rgba(255,255,255,0.92); }
.btn {
  display: inline-block;
  background: #fff;
  color: var(--clay-dark);
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 999px;
  text-decoration: none;
}
.btn:hover { background: var(--clay-light); color: var(--clay-dark); }
.btn.secondary {
  background: transparent;
  border: 2px solid #fff;
  color: #fff;
  margin-left: 12px;
}
.btn.secondary:hover { background: rgba(255,255,255,0.14); color: #fff; }

/* ---------- Related articles ---------- */
.related { padding: 8px 0 56px; }
.related h3 { font-size: 1.1rem; margin-bottom: 18px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 760px) { .related-grid { grid-template-columns: 1fr; } }
.related-grid a {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  text-decoration: none;
  color: var(--ink);
}
.related-grid a .tag { display: block; font-size: 0.72rem; text-transform: uppercase; color: var(--clay-dark); font-weight: 700; margin-bottom: 8px; }
.related-grid a h4 { margin: 0; font-family: 'Fraunces', serif; color: var(--pine-dark); font-size: 1.02rem; }

/* ---------- Footer ---------- */
footer.site-footer {
  background: var(--pine-dark);
  color: rgba(255,255,255,0.75);
  padding: 56px 0 30px;
  font-size: 0.92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 {
  color: #fff;
  font-family: 'Fraunces', serif;
  font-size: 0.98rem;
  margin: 0 0 14px;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a { color: rgba(255,255,255,0.7); text-decoration: none; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { color: rgba(255,255,255,0.68); max-width: 320px; }
.disclaimer-box {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0 22px;
  color: rgba(255,255,255,0.8);
  font-size: 0.88rem;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: rgba(255,255,255,0.55);
  font-size: 0.84rem;
}
.footer-bottom a { color: rgba(255,255,255,0.7); }