/* OsteoStrong Mercer Island - Blog Styles */
:root {
  --ink: #f6f7fb;
  --muted: #cfd3df;
  --brand: #ffd24a;
  --accent: #49d4c8;
  --radius: 16px;
  --maxw: 760px;
  --maxw-wide: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); font: 17px/1.65 system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(100%, var(--maxw)); margin-inline: auto; padding: 0 20px; }
.wrap-wide { width: min(100%, var(--maxw-wide)); margin-inline: auto; padding: 0 20px; }

/* Fixed background + overlay */
.bg-fixed { position: fixed; inset: 0; z-index: -2; background: url('/images/session-room-dark-1200x700.jpeg') center / cover no-repeat; }
.bg-overlay { position: fixed; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(0,0,0,.55), rgba(0,0,0,.65)); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 40; backdrop-filter: blur(10px); background: rgba(0,0,0,.55); border-bottom: 1px solid rgba(255,255,255,.08); }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.logo-wrap { display: inline-flex; align-items: center; gap: 10px; }
.logo-img { display: block; height: 28px; width: auto; }
.logo-sub { font-size: 12px; letter-spacing: 2px; opacity: .9; margin-left: 6px; white-space: nowrap; }
.nav a { color: var(--ink); opacity: .92; }
.nav-links { display: flex; gap: 18px; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 18px; border-radius: 999px; font-weight: 700; border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.06); color: var(--ink); }
.btn:hover { text-decoration: none; background: rgba(255,255,255,.1); }
.btn.primary { background: var(--brand); color: #181818; border: none; box-shadow: 0 10px 24px rgba(255,210,74,.18); }
.btn.primary:hover { filter: brightness(.96); }

/* Blog Index */
.blog-header { padding: 56px 0 32px; text-align: center; }
.blog-header h1 { font-size: clamp(28px, 5vw, 42px); margin: 0 0 8px; color: var(--brand); }
.blog-header p { color: var(--muted); margin: 0; font-size: 1.1rem; }

.post-list { list-style: none; padding: 0; margin: 0 0 64px; display: grid; gap: 20px; }
.post-card { background: rgba(0,0,0,.45); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 24px; transition: border-color .2s; }
.post-card:hover { border-color: rgba(255,255,255,.25); }
.post-card h2 { margin: 0 0 8px; font-size: 1.4rem; }
.post-card h2 a { color: var(--ink); }
.post-card h2 a:hover { color: var(--brand); text-decoration: none; }
.post-meta { font-size: .9rem; color: var(--muted); margin-bottom: 12px; }
.post-excerpt { color: var(--muted); margin: 0; }

/* Article */
.article-header { padding: 56px 0 24px; }
.article-header h1 { font-size: clamp(26px, 4.5vw, 40px); line-height: 1.2; margin: 0 0 12px; }
.article-meta { font-size: .95rem; color: var(--muted); }
.article-meta .author { color: var(--accent); }

.article-body { padding-bottom: 64px; }
.article-body h2 { font-size: 1.5rem; color: var(--brand); margin: 2em 0 .75em; }
.article-body h3 { font-size: 1.2rem; margin: 1.5em 0 .5em; }
.article-body p { margin: 0 0 1.25em; }
.article-body ul, .article-body ol { margin: 0 0 1.25em; padding-left: 1.5em; }
.article-body li { margin-bottom: .5em; }
.article-body blockquote { border-left: 3px solid var(--brand); margin: 1.5em 0; padding: .5em 0 .5em 1.25em; color: var(--muted); font-style: italic; }
.article-body strong { color: var(--ink); }
.article-body img { max-width: 100%; height: auto; border-radius: 12px; margin: 1.5em 0; }

/* CTA Panel */
.cta-panel { background: rgba(0,0,0,.5); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 32px; text-align: center; margin: 48px 0; }
.cta-panel h3 { margin: 0 0 8px; font-size: 1.3rem; }
.cta-panel p { color: var(--muted); margin: 0 0 18px; }

/* Back link */
.back-link { display: inline-block; margin-bottom: 24px; font-size: .95rem; }

/* Footer */
footer { color: var(--muted); border-top: 1px solid rgba(255,255,255,.12); padding: 28px 0 60px; background: rgba(0,0,0,.35); }
.mini { font-size: 13px; color: var(--muted); }

@media (max-width: 760px) {
  .nav-links { display: none; }
}