/* SupplementAI — Shared styles */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:           #f7f5f0;
  --surface:      #ffffff;
  --surface2:     #f1ece4;
  --border:       #e2d9cc;
  --border-focus: #9ec4ae;
  --green:        #1a5235;
  --green-mid:    #26724a;
  --green-light:  #e6f1eb;
  --green-border: #9dc8b0;
  --amber:        #b07010;
  --amber-light:  #fdf2dc;
  --amber-border: #e0c060;
  --blue:         #1e4a8a;
  --blue-light:   #e8f0fb;
  --blue-border:  #9ab4d8;
  --text:         #141c18;
  --text-2:       #364840;
  --muted:        #7a9080;
  --sh-xs:        0 1px 4px rgba(10,24,16,.06);
  --sh-sm:        0 2px 14px rgba(10,24,16,.08);
  --sh-md:        0 6px 30px rgba(10,24,16,.11);
  --sh-lg:        0 14px 52px rgba(10,24,16,.15);
  --r:            20px;
  --r-sm:         14px;
  --r-xs:         10px;
}

html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: 'DM Sans', system-ui, sans-serif; min-height: 100vh; line-height: 1.65; }

/* ── Nav ── */
.site-nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--sh-xs);
}
.nav-logo { font-size:.72rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--green);text-decoration:none;padding:16px 0;flex-shrink:0; }
.nav-links { display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none; }
.nav-links::-webkit-scrollbar { display:none; }
.nav-link { padding:8px 14px;border-radius:var(--r-xs);font-size:.8rem;font-weight:600;color:var(--text-2);text-decoration:none;white-space:nowrap;transition:background .15s,color .15s; }
.nav-link:hover { background:var(--surface2);color:var(--text); }
.nav-link.active { background:var(--green-light);color:var(--green); }
.nav-cta { padding:8px 16px;border-radius:var(--r-xs);background:var(--green);color:#fff;font-size:.8rem;font-weight:700;text-decoration:none;white-space:nowrap;transition:background .15s;flex-shrink:0; }
.nav-cta:hover { background:var(--green-mid); }

/* ── Footer ── */
footer { text-align:center;padding:24px;color:var(--muted);font-size:.71rem;border-top:1px solid var(--border);line-height:1.7; }

/* ── Article layout ── */
.article-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 52px 24px 44px;
  text-align: center;
}
.eyebrow { display:inline-flex;align-items:center;gap:8px;font-size:.63rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--green-mid);margin-bottom:10px; }
.eyebrow::before { content:'';width:18px;height:2px;background:var(--green-mid);border-radius:2px; }

.article-hero h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--text);
  line-height: 1.18;
  max-width: 700px;
  margin: 0 auto 16px;
}
.article-hero h1 em { font-style: italic; color: var(--green); }

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: .78rem;
  color: var(--muted);
  font-weight: 500;
}
.meta-dot { color: var(--border); }
.meta-cat {
  padding: 3px 10px;
  border-radius: 99px;
  background: var(--green-light);
  border: 1px solid var(--green-border);
  color: var(--green);
  font-weight: 700;
  font-size: .7rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

/* ── Article body ── */
.article-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 52px 24px 100px;
}

.article-body { display: flex; flex-direction: column; gap: 28px; }

.article-body h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.25;
  margin-top: 12px;
}
.article-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
}
.article-body p { font-size: .95rem; color: var(--text-2); line-height: 1.8; }
.article-body ul, .article-body ol {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.article-body li { font-size: .95rem; color: var(--text-2); line-height: 1.75; }
.article-body strong { color: var(--text); font-weight: 700; }

/* ── Highlight box ── */
.highlight-box {
  background: var(--green-light);
  border: 1.5px solid var(--green-border);
  border-radius: var(--r-sm);
  padding: 20px 24px;
}
.highlight-box p { color: var(--green); }
.highlight-box strong { color: var(--green); }

.info-box {
  background: var(--amber-light);
  border: 1.5px solid var(--amber-border);
  border-radius: var(--r-sm);
  padding: 20px 24px;
}
.info-box p { color: var(--amber); }

/* ── Comparison table ── */
.comp-table-wrap { overflow-x: auto; border-radius: var(--r-sm); border: 1.5px solid var(--border); }
.comp-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.comp-table th {
  background: var(--surface2);
  padding: 12px 16px;
  text-align: left;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-2);
  border-bottom: 1.5px solid var(--border);
}
.comp-table td { padding: 13px 16px; border-bottom: 1px solid var(--border); color: var(--text-2); vertical-align: top; }
.comp-table tr:last-child td { border-bottom: none; }
.comp-table tr:hover td { background: var(--surface2); }
.comp-table .best { color: var(--green); font-weight: 700; }

/* ── Product CTA card ── */
.product-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: var(--sh-sm);
}
.product-card-info { flex: 1; min-width: 200px; }
.product-card-name { font-weight: 700; font-size: .95rem; color: var(--text); margin-bottom: 4px; }
.product-card-desc { font-size: .82rem; color: var(--muted); }
.product-cta {
  padding: 11px 20px;
  border-radius: var(--r-xs);
  background: var(--green);
  color: #fff;
  font-size: .84rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: background .15s;
  box-shadow: 0 3px 12px rgba(26,82,53,.22);
}
.product-cta:hover { background: var(--green-mid); }
.product-cta.amber { background: var(--amber); box-shadow: 0 3px 12px rgba(176,112,16,.22); }
.product-cta.amber:hover { background: #956010; }

/* ── FAQ ── */
.faq-section { display: flex; flex-direction: column; gap: 10px; }
.faq-item { background:var(--surface);border:1px solid var(--border);border-radius:var(--r-sm);overflow:hidden; }
.faq-q { padding:16px 20px;font-weight:700;font-size:.88rem;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;user-select:none; }
.faq-q svg { width:15px;height:15px;stroke:var(--muted);fill:none;stroke-width:2;stroke-linecap:round;flex-shrink:0;transition:transform .25s; }
.faq-item.open .faq-q svg { transform:rotate(180deg); }
.faq-a { max-height:0;overflow:hidden;transition:max-height .3s ease;font-size:.86rem;color:var(--text-2);line-height:1.75; }
.faq-item.open .faq-a { max-height:400px; }
.faq-a-inner { padding:0 20px 16px; }

/* ── Related articles ── */
.related-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px; }
.related-card { background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-sm);padding:18px;text-decoration:none;color:inherit;transition:border-color .2s,transform .2s; }
.related-card:hover { border-color:var(--green-border);transform:translateY(-3px); }
.related-cat { font-size:.65rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--green-mid);margin-bottom:6px; }
.related-title { font-size:.9rem;font-weight:700;color:var(--text);line-height:1.35; }
.related-arrow { display:block;margin-top:10px;font-size:.8rem;font-weight:700;color:var(--green); }

/* ── Section heading ── */
.section-heading {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.section-sub { font-size:.86rem;color:var(--text-2);margin-bottom:20px; }

/* ── CTA banner ── */
.cta-banner {
  background: var(--green);
  border-radius: var(--r);
  padding: 28px 32px;
  color: #fff;
  text-align: center;
}
.cta-banner h3 { font-family:'Playfair Display',Georgia,serif;font-size:1.3rem;font-weight:700;margin-bottom:8px; }
.cta-banner p { font-size:.88rem;opacity:.85;margin-bottom:20px; }
.cta-banner a {
  display: inline-block;
  padding: 12px 28px;
  background: #fff;
  color: var(--green);
  border-radius: var(--r-xs);
  font-weight: 700;
  font-size: .9rem;
  text-decoration: none;
  transition: background .15s;
}
.cta-banner a:hover { background: var(--green-light); }

@media (max-width: 640px) {
  .article-wrap { padding: 32px 16px 72px; }
  .article-hero { padding: 40px 20px 36px; }
  .product-card { flex-direction: column; align-items: flex-start; }
}

/* ── Affiliate bar ── */
.affiliate-bar {
  background: var(--amber-light);
  border-bottom: 1px solid var(--amber-border);
  padding: 9px 24px;
  font-size: .74rem;
  font-weight: 500;
  color: var(--amber);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  line-height: 1.5;
}
.affiliate-bar svg { flex-shrink: 0; }