/* ================================================================
   Compound Review — Shared CSS for Phase 2 Wave C page templates
   Drafted 2026-04-29. Extracted from Wave A tokens + Wave B components.
   Phase 3 Astro replaces this with Tailwind 4 + tokens.css + per-component styles.
   ================================================================ */

:root {
  --slate-50:#F7F8FA; --slate-100:#ECEEF2; --slate-200:#D7DCE4; --slate-300:#B5BEC9;
  --slate-400:#8593A1; --slate-500:#5A6877; --slate-600:#3F4B58; --slate-700:#2C3641;
  --slate-800:#1E262F; --slate-900:#131A21; --slate-950:#0A0E12;
  --teal-50:#EFF6F5; --teal-100:#D5E5E2; --teal-300:#88B5AE; --teal-500:#3F827A;
  --teal-700:#2A5651; --teal-900:#163530;
  --amber-100:#FBEFCF; --amber-300:#EBC461; --amber-500:#C58A1F; --amber-600:#A87513; --amber-700:#8A5E0E;
  --success-50:#E6F3EB; --success-500:#2D7A4B;
  --error-50:#FBEAE7; --error-500:#B53024;
  --font-serif:"Source Serif 4",Charter,"Iowan Old Style",Georgia,serif;
  --font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","SF Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(0.4,0,0.2,1);
  --ease-in:cubic-bezier(0,0,0.2,1);
  --ease-out:cubic-bezier(0.4,0,1,1);
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-sans);font-size:1rem;line-height:1.65;color:var(--slate-800);background:var(--slate-50);-webkit-font-smoothing:antialiased;}
body.is-locked{overflow:hidden;}

a{color:var(--teal-700);text-decoration:none;border-bottom:1px solid var(--teal-300);}
a:hover{color:var(--teal-900);border-color:var(--teal-700);}

img{max-width:100%;height:auto;}

/* Global focus-visible — every focusable element gets the amber ring per Wave A spec */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible{
  outline:2px solid var(--amber-500);
  outline-offset:2px;
  border-radius:2px;
}

/* Skip link */
.skip-link{position:absolute;top:-9999px;left:0;padding:12px 16px;background:var(--slate-950);color:var(--slate-50);font-weight:600;text-decoration:none;z-index:3000;border:0;}
.skip-link:focus{top:0;}

/* Container */
.container{max-width:1280px;margin:0 auto;padding:0 48px;}
@media (max-width:1023px){.container{padding:0 32px;}}
@media (max-width:767px){.container{padding:0 16px;}}

.container-prose{max-width:720px;margin:0 auto;padding:0 16px;}
@media (min-width:1024px){.container-prose{padding:0;}}

/* ============================================================
   RUO banner
   ============================================================ */
.ruo-banner{background:var(--slate-900);color:var(--slate-50);font-size:0.875rem;font-weight:600;line-height:1.4;padding:8px 0;text-align:center;position:sticky;top:0;z-index:100;}
.ruo-banner strong{color:var(--amber-300);font-weight:700;margin-right:6px;}
.ruo-banner .container{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;}
@media (max-width:767px){.ruo-banner{font-size:0.75rem;padding:10px 0;}}

/* ============================================================
   Masthead + primary nav
   ============================================================ */
.masthead{background:var(--slate-50);border-bottom:1px solid var(--slate-200);padding:24px 0 0;}
.masthead .top{display:flex;align-items:center;justify-content:space-between;gap:16px;}
/* Wordmark — HTML text, not SVG.
   SVGs loaded via <img> can't access the parent document's fonts; fallback metrics overflowed the viewBox.
   The dedicated SVG variants in /wordmark/ remain for OG cards and PDF cover. */
.masthead .wordmark{display:inline-block;font-family:var(--font-serif);font-weight:600;font-size:1.875rem;letter-spacing:-0.012em;color:var(--slate-950);line-height:1;text-decoration:none;border:0;white-space:nowrap;}
.masthead .wordmark:hover{color:var(--slate-700);border:0;}
.masthead .wordmark:focus-visible{outline:2px solid var(--amber-500);outline-offset:4px;}
.masthead .top-actions{display:flex;align-items:center;gap:12px;}
.masthead .ham{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:8px;cursor:pointer;color:var(--slate-800);}
.masthead .ham span{display:block;width:22px;height:2px;background:currentColor;}

.primary-nav{padding:16px 0 24px;border-top:1px solid var(--slate-200);margin-top:24px;}
.primary-nav ul{list-style:none;padding:0;margin:0;display:flex;gap:24px;flex-wrap:wrap;}
.primary-nav a{font-family:var(--font-sans);font-size:0.9375rem;font-weight:500;color:var(--slate-700);text-decoration:none;border:0;padding:4px 0;border-bottom:2px solid transparent;}
.primary-nav a:hover{color:var(--slate-950);border-bottom-color:var(--slate-300);}
.primary-nav a.current{color:var(--slate-950);font-weight:600;border-bottom-color:var(--teal-500);}

@media (max-width:767px){
  .masthead{padding:16px 0 0;}
  .masthead .wordmark{font-size:1.5rem;}
  .masthead .ham{display:flex;}
  .primary-nav{display:none;}
}

/* ============================================================
   Buttons
   ============================================================ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-sans);font-size:1rem;font-weight:600;line-height:1;padding:14px 24px;border:1px solid transparent;border-radius:2px;cursor:pointer;transition:background 200ms var(--ease),border-color 200ms var(--ease);text-decoration:none;min-height:44px;white-space:nowrap;}
.btn:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px;}
.btn-primary{background:var(--amber-500);color:var(--slate-950);border-color:var(--amber-500);}
.btn-primary:hover{background:var(--amber-600);border-color:var(--amber-600);color:var(--slate-950);}
.btn-secondary{background:transparent;color:var(--slate-900);border-color:var(--slate-300);}
.btn-secondary:hover{background:var(--slate-100);border-color:var(--slate-400);}
.btn[disabled],.btn[aria-disabled=true]{opacity:0.5;cursor:not-allowed;}

/* ============================================================
   Signup card (CTA pattern)
   ============================================================ */
.signup-card{background:var(--amber-100);border-left:3px solid var(--amber-700);padding:28px;}
.signup-card h2,.signup-card h3{font-family:var(--font-serif);font-size:1.5rem;font-weight:600;color:var(--slate-900);margin:0 0 8px;line-height:1.25;}
.signup-card p{font-family:var(--font-sans);font-size:1rem;color:var(--slate-700);margin:0 0 20px;line-height:1.55;}
.signup-card form{display:flex;gap:8px;flex-wrap:wrap;}
.signup-card input[type=email]{flex:1;min-width:200px;font-family:var(--font-sans);font-size:1rem;padding:13px 16px;border:1px solid var(--slate-300);border-radius:2px;background:#FFFFFF;color:var(--slate-900);}
.signup-card input[type=email]:focus{outline:2px solid var(--amber-500);outline-offset:2px;border-color:var(--amber-500);}
.signup-card .consent{font-family:var(--font-sans);font-size:0.75rem;color:var(--slate-600);margin:12px 0 0;line-height:1.45;}

/* ============================================================
   Article body prose
   ============================================================ */
.prose{max-width:720px;margin:0 auto;}
.prose h1{font-family:var(--font-serif);font-size:3rem;font-weight:600;line-height:1.10;letter-spacing:-0.01em;color:var(--slate-950);margin:0 0 16px;}
.prose .meta{font-family:var(--font-sans);font-size:0.875rem;font-weight:500;color:var(--slate-500);margin:0 0 32px;}
.prose .meta a{color:var(--teal-700);border-bottom:1px solid var(--teal-300);}
.prose .lede{font-family:var(--font-serif);font-size:1.375rem;font-weight:400;font-style:italic;line-height:1.45;color:var(--slate-600);margin:0 0 32px;border-left:2px solid var(--teal-300);padding-left:16px;}
.prose h2{font-family:var(--font-serif);font-size:2.25rem;font-weight:600;line-height:1.15;letter-spacing:-0.005em;color:var(--slate-900);margin:48px 0 16px;}
.prose h3{font-family:var(--font-serif);font-size:1.625rem;font-weight:600;line-height:1.20;color:var(--slate-900);margin:32px 0 12px;}
.prose h4{font-family:var(--font-serif);font-size:1.25rem;font-weight:600;line-height:1.25;color:var(--slate-900);margin:24px 0 8px;}
.prose p{font-family:var(--font-sans);font-size:1.125rem;line-height:1.70;color:var(--slate-800);margin:0 0 24px;}
.prose p a{color:var(--teal-700);border-bottom:1px solid var(--teal-300);}
.prose p a:hover{color:var(--teal-900);border-color:var(--teal-700);}
.prose ul,.prose ol{font-family:var(--font-sans);font-size:1.125rem;line-height:1.70;color:var(--slate-800);margin:0 0 24px;padding-left:24px;}
.prose li{margin-bottom:8px;}
.prose code,.prose .seq{font-family:var(--font-mono);font-size:0.95em;background:var(--slate-100);color:var(--slate-900);padding:2px 6px;border-radius:2px;font-feature-settings:"liga" 0;}
.prose blockquote{margin:24px 0;padding:16px 24px;background:var(--slate-100);border-left:3px solid var(--slate-400);font-family:var(--font-serif);font-style:italic;color:var(--slate-700);}
.prose hr{border:0;border-top:1px solid var(--slate-200);margin:48px 0;}
.prose .article-figure{margin:32px 0;}
.prose .article-figure img{display:block;width:100%;height:auto;max-width:100%;background:var(--slate-50);border:1px solid var(--slate-200);border-radius:2px;}
.prose .article-figure figcaption{margin-top:10px;font-family:var(--font-sans);font-size:0.875rem;line-height:1.5;color:var(--slate-600);}
.prose .article-figure figcaption em{font-style:italic;}
.prose table{width:100%;border-collapse:collapse;font-family:var(--font-sans);font-size:0.9375rem;margin:0 0 24px;}
.prose th,.prose td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--slate-200);}
.prose th{background:var(--slate-100);font-weight:600;color:var(--slate-900);font-size:0.8125rem;text-transform:uppercase;letter-spacing:0.05em;}

@media (max-width:767px){
  .prose h1{font-size:2.25rem;}
  .prose .lede{font-size:1.125rem;}
  .prose h2{font-size:1.875rem;margin:40px 0 12px;}
  .prose h3{font-size:1.375rem;margin:28px 0 10px;}
  .prose p,.prose ul,.prose ol{font-size:1rem;}
}

/* ============================================================
   Compliance note (inline in articles)
   ============================================================ */
.compliance-note{background:var(--teal-50);border-left:3px solid var(--teal-700);padding:20px 24px;margin:32px 0;font-family:var(--font-sans);font-size:1rem;font-weight:500;line-height:1.60;color:var(--slate-800);}
.compliance-note strong{color:var(--slate-900);}

/* ============================================================
   References list
   ============================================================ */
.refs{list-style:decimal;padding-left:24px;font-family:var(--font-sans);font-size:0.875rem;line-height:1.55;color:var(--slate-700);font-variant-numeric:tabular-nums;}
.refs li{margin-bottom:14px;padding:6px 12px;margin-left:-12px;border-left:3px solid transparent;transition:background 300ms var(--ease),border-color 300ms var(--ease);}
.refs li:target{background:var(--teal-50);border-left-color:var(--teal-500);}
.refs em{color:var(--slate-800);}
.refs a{color:var(--teal-700);border-bottom:1px solid var(--teal-300);}

/* ============================================================
   Author bio
   ============================================================ */
.author-bio{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-family:var(--font-sans);font-size:0.875rem;color:var(--slate-500);padding:16px 0;border-top:1px solid var(--slate-200);border-bottom:1px solid var(--slate-200);margin:48px 0 32px;}
.author-bio strong{color:var(--slate-700);font-weight:600;}
.author-bio .sep{color:var(--slate-300);}
.author-bio a{color:var(--teal-700);font-weight:500;border-bottom:1px solid var(--teal-300);padding-bottom:1px;}

/* ============================================================
   Brief identity grid
   ============================================================ */
.brief-eyebrow{font-family:var(--font-sans);font-size:0.75rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--teal-700);margin:0 0 12px;}
.brief-identity{background:#FFFFFF;border:1px solid var(--slate-200);padding:24px;margin:0 0 32px;}
.brief-identity dl{display:grid;grid-template-columns:1fr;gap:16px 32px;margin:0;}
@media (min-width:768px){.brief-identity dl{grid-template-columns:repeat(2,1fr);}}
.brief-identity .full{grid-column:1/-1;}
.brief-identity dt{font-family:var(--font-sans);font-size:0.6875rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--slate-500);margin:0 0 4px;}
.brief-identity dd{font-family:var(--font-sans);font-size:1rem;color:var(--slate-900);margin:0;font-weight:500;}
.brief-identity dd.mono{font-family:var(--font-mono);word-break:break-all;font-feature-settings:"liga" 0;}

/* ============================================================
   Article cards (grid)
   ============================================================ */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}

.card{display:block;background:#FFFFFF;border:1px solid var(--slate-200);padding:24px;text-decoration:none;color:inherit;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);}
.card:hover{border-color:var(--slate-400);box-shadow:0 2px 8px rgba(19,26,33,0.10);}
.card:hover .card-title{text-decoration:underline;text-decoration-color:var(--slate-400);text-underline-offset:3px;}
.card-eyebrow{font-family:var(--font-sans);font-size:0.6875rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--teal-700);margin:0 0 8px;}
.card-eyebrow.method{color:var(--slate-700);}
.card-compound{font-family:var(--font-mono);font-size:0.75rem;color:var(--slate-500);margin:0 0 4px;}
.card-title{font-family:var(--font-serif);font-size:1.375rem;font-weight:600;line-height:1.25;color:var(--slate-900);margin:0 0 12px;}
.card-desc{font-family:var(--font-sans);font-size:0.9375rem;line-height:1.55;color:var(--slate-700);margin:0 0 16px;}
.card-meta{font-family:var(--font-sans);font-size:0.75rem;color:var(--slate-500);margin:0;display:flex;justify-content:space-between;align-items:center;}
.card-meta .read{color:var(--teal-700);font-weight:600;}

/* ============================================================
   Section heading pattern
   ============================================================ */
.section-eyebrow{font-family:var(--font-sans);font-size:0.75rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--teal-700);margin:0 0 8px;}
.section-title{font-family:var(--font-serif);font-size:2.25rem;font-weight:600;line-height:1.15;letter-spacing:-0.005em;color:var(--slate-900);margin:0 0 16px;}
.section-intro{font-size:1.125rem;color:var(--slate-600);max-width:720px;margin:0 0 32px;line-height:1.55;}
@media (min-width:1024px){.section-title{font-size:2.5rem;}}

/* ============================================================
   ComplianceFooter
   ============================================================ */
.site-footer{background:var(--slate-900);color:var(--slate-300);padding:64px 0 32px;}
/* Footer wordmark — HTML text, same rationale as masthead. */
.site-footer .wordmark{display:inline-block;font-family:var(--font-serif);font-weight:600;font-size:1.75rem;letter-spacing:-0.012em;color:var(--slate-50);line-height:1;text-decoration:none;border:0;margin-bottom:24px;white-space:nowrap;}
.site-footer .disclaimer{font-family:var(--font-sans);font-size:0.875rem;line-height:1.55;color:var(--slate-300);max-width:720px;margin:0 0 16px;}
.site-footer .tpc{font-family:var(--font-sans);font-size:0.875rem;line-height:1.55;color:var(--slate-300);max-width:720px;margin:0 0 32px;padding-top:16px;border-top:1px solid var(--slate-700);}
.site-footer .tpc strong{color:var(--slate-100);}
/* Footer link override: default link is teal-700 (too dark on slate-900). Use teal-300 for AA contrast on dark background. */
.site-footer a{color:var(--teal-300);border-bottom-color:rgba(136,181,174,0.4);}
.site-footer a:hover{color:#FFFFFF;border-bottom-color:var(--teal-300);}
.site-footer .copyright{font-family:var(--font-sans);font-size:0.75rem;color:var(--slate-300);margin:0;padding-top:16px;border-top:1px solid var(--slate-700);display:flex;flex-wrap:wrap;gap:8px 16px;}
.site-footer .copyright a{color:var(--slate-200);border-bottom:1px solid var(--slate-700);padding-bottom:1px;}
.site-footer .copyright a:hover{color:#FFFFFF;border-color:var(--slate-400);}

/* ============================================================
   TOC sidebar (methodology articles)
   ============================================================ */
.article-with-toc{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){
  .article-with-toc{grid-template-columns:240px 1fr;gap:48px;align-items:start;max-width:1080px;margin:0 auto;}
}
.toc-sidebar{background:#FFFFFF;border:1px solid var(--slate-200);padding:24px;}
@media (min-width:1024px){.toc-sidebar{position:sticky;top:96px;}}
.toc-sidebar h4{font-family:var(--font-sans);font-size:0.6875rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--slate-500);margin:0 0 16px;}
.toc-sidebar ol{list-style:none;padding:0;margin:0;}
.toc-sidebar ol ol{margin-left:16px;margin-top:6px;}
.toc-sidebar li{margin-bottom:6px;}
.toc-sidebar a{display:block;font-family:var(--font-sans);font-size:0.875rem;line-height:1.4;color:var(--slate-600);text-decoration:none;padding:4px 0 4px 12px;border:0;border-left:2px solid transparent;}
.toc-sidebar a:hover{color:var(--slate-900);}
.toc-sidebar a.active{color:var(--teal-700);border-left-color:var(--teal-500);font-weight:600;}

/* ============================================================
   Reference table
   ============================================================ */
.ref-table-wrap{overflow-x:auto;border:1px solid var(--slate-200);background:#FFFFFF;}
.ref-table{width:100%;border-collapse:collapse;font-family:var(--font-sans);font-size:0.875rem;}
.ref-table caption{text-align:left;font-family:var(--font-serif);font-size:1.25rem;font-weight:600;color:var(--slate-800);padding:16px 16px 8px;caption-side:top;}
.ref-table thead{background:var(--slate-100);position:sticky;top:0;}
.ref-table th{text-align:left;padding:12px 16px;font-family:var(--font-sans);font-size:0.6875rem;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;color:var(--slate-700);border-bottom:1px solid var(--slate-300);white-space:nowrap;}
.ref-table th button{background:none;border:none;padding:0;color:inherit;font:inherit;letter-spacing:inherit;text-transform:inherit;cursor:pointer;display:inline-flex;align-items:center;gap:6px;}
.ref-table th button:hover{color:var(--slate-900);}
.ref-table th[aria-sort=ascending] button::after{content:"▲";font-size:0.625rem;color:var(--teal-700);}
.ref-table th[aria-sort=descending] button::after{content:"▼";font-size:0.625rem;color:var(--teal-700);}
.ref-table th[aria-sort=none] button::after{content:"⇅";font-size:0.625rem;color:var(--slate-400);}
.ref-table td{padding:12px 16px;border-bottom:1px solid var(--slate-100);color:var(--slate-800);font-variant-numeric:tabular-nums;}
.ref-table td.mono{font-family:var(--font-mono);font-size:0.8125rem;font-feature-settings:"liga" 0;color:var(--slate-700);}
.ref-table td.compound{font-weight:600;color:var(--slate-900);}
.ref-table tbody tr:nth-child(even){background:var(--slate-50);}
.ref-table tbody tr:hover{background:var(--teal-50);}

/* ============================================================
   Video embed (facade)
   ============================================================ */
.video-embed{background:#FFFFFF;border:1px solid var(--slate-200);}
.video-facade{aspect-ratio:16/9;background:var(--slate-900);position:relative;display:flex;align-items:center;justify-content:center;cursor:pointer;width:100%;border:0;}
.video-play{position:relative;z-index:1;width:80px;height:80px;background:var(--amber-500);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,0.30);}
.video-play::after{content:"";display:block;width:0;height:0;border-left:24px solid var(--slate-950);border-top:14px solid transparent;border-bottom:14px solid transparent;margin-left:6px;}
.video-meta{padding:16px 20px;border-top:1px solid var(--slate-200);font-family:var(--font-sans);font-size:0.875rem;color:var(--slate-500);display:flex;justify-content:space-between;align-items:center;}
.video-meta strong{color:var(--slate-800);font-weight:600;font-size:0.9375rem;}

/* ============================================================
   AgeGate modal (mounted by _age-gate.js on every template)
   ============================================================ */
#cr-age-gate{position:fixed;inset:0;z-index:2000;display:flex;align-items:center;justify-content:center;padding:16px;}
#cr-age-gate .cr-age-gate-scrim{position:absolute;inset:0;background:rgba(10,14,18,0.72);animation:crScrim 280ms var(--ease-in);}
#cr-age-gate .cr-age-gate-modal{position:relative;background:#FFFFFF;max-width:480px;width:100%;border:1px solid var(--slate-300);box-shadow:0 8px 24px rgba(19,26,33,0.35);padding:32px;border-radius:4px;animation:crModal 280ms var(--ease-in);}
#cr-age-gate h2{font-family:var(--font-serif);font-size:1.5rem;font-weight:600;line-height:1.20;color:var(--slate-900);margin:0 0 12px;outline:none;}
#cr-age-gate .cr-age-gate-lede{font-family:var(--font-sans);font-size:0.9375rem;line-height:1.55;color:var(--slate-700);margin:0 0 20px;}
#cr-age-gate .cr-age-gate-checks{display:flex;flex-direction:column;gap:14px;margin:0 0 24px;}
#cr-age-gate label{display:flex;gap:12px;align-items:flex-start;font-family:var(--font-sans);font-size:0.9375rem;line-height:1.45;color:var(--slate-800);cursor:pointer;}
#cr-age-gate input[type=checkbox]{margin-top:3px;width:18px;height:18px;flex-shrink:0;accent-color:var(--teal-700);cursor:pointer;}
#cr-age-gate .cr-age-gate-actions{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap;}
#cr-age-gate .cr-age-gate-actions .btn{padding:12px 20px;}

@keyframes crScrim{from{opacity:0;}to{opacity:1;}}
@keyframes crModal{from{opacity:0;transform:translateY(8px) scale(0.98);}to{opacity:1;transform:translateY(0) scale(1);}}

@media (max-width:480px){
  #cr-age-gate .cr-age-gate-modal{padding:24px;}
  #cr-age-gate h2{font-size:1.375rem;}
  #cr-age-gate .cr-age-gate-actions{flex-direction:column-reverse;}
  #cr-age-gate .cr-age-gate-actions .btn{width:100%;}
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
}