/* ── Peptide Mom Bulletin Pages — Shared Stylesheet ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #2563eb;
  --accent2: #0ea5e9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --bg: #f8fafc;
  --surface: #ffffff;
  --border: rgba(15, 23, 42, 0.08);
  --radius: 14px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Navbar ── */
.blt-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 2px 20px rgba(0,0,0,0.04);
}
.blt-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.blt-nav-logo img { height: 28px; object-fit: contain; display: block; }
.blt-nav-links { display: flex; gap: 1.75rem; }
.blt-nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.blt-nav-links a:hover { color: var(--accent); }
.blt-nav-btn {
  background: linear-gradient(135deg, #1a5bff, #00c6ff);
  color: #fff;
  padding: 0.55rem 1.3rem;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(26,91,255,0.25);
  transition: opacity 0.2s, transform 0.2s;
}
.blt-nav-btn:hover { opacity: 0.9; transform: translateY(-1px); }
@media (max-width: 768px) { .blt-nav-links { display: none; } }

/* ── Page Layout ── */
.blt-wrap { min-height: 100vh; display: flex; flex-direction: column; }
.blt-main { flex: 1; }

/* ── Hero Header ── */
.blt-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 2rem 3rem;
}
.blt-hero-inner { max-width: 860px; margin: 0 auto; }
.blt-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.blt-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  background: rgba(37,99,235,0.08);
  color: var(--accent);
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
.blt-date {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.blt-hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.85rem;
}
.blt-hero .blt-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 680px;
}
.blt-divider {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 99px;
  margin-top: 1.5rem;
}

/* ── Content Area ── */
.blt-content-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
}
.blt-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2.5rem 3rem;
  box-shadow: 0 2px 16px rgba(15,23,42,0.05);
}
.blt-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2rem 0 0.85rem;
}
.blt-content h2:first-child { margin-top: 0; }
.blt-content p {
  font-size: 0.97rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
}
.blt-content ul, .blt-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.blt-content li {
  font-size: 0.97rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 0.4rem;
}
.blt-content a { color: var(--accent); text-decoration: none; }
.blt-content a:hover { text-decoration: underline; }
.blt-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}
.blt-highlight {
  background: rgba(37,99,235,0.05);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.blt-highlight p { margin: 0; }

/* ── Back Link ── */
.blt-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  margin-bottom: 1.5rem;
  padding: 0.5rem 0;
  transition: gap 0.2s;
}
.blt-back:hover { gap: 0.75rem; }

/* ── Footer ── */
.blt-footer {
  background: #0f172a;
  color: #94a3b8;
  text-align: center;
  padding: 2rem 2rem;
  font-size: 0.82rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.blt-footer a { color: #64748b; text-decoration: none; }
.blt-footer a:hover { color: #fff; }
.blt-footer-links { display: flex; justify-content: center; gap: 1.5rem; margin-top: 0.5rem; }

@media (max-width: 640px) {
  .blt-hero h1 { font-size: 1.75rem; }
  .blt-content { padding: 1.75rem 1.5rem; }
  .blt-content-wrap { padding: 2rem 1rem 4rem; }
}