/* ==========================================================================
   learn.css — self-contained stylesheet for the /learn/ content hub.

   Why self-contained (not a shared extract from the app): the app's CSS is
   four manually-versioned, cascade-ordered files (perfectfit-v11→v14j) plus a
   large inline <style> block and ~460 inline style attributes, wired to the
   single-page app's DOM and its dark / high-contrast / colorblind / i18n
   modes and SPA nav() handlers. None of that is cleanly separable without
   editing the app surface (out of scope). These article pages instead
   re-declare the same design tokens, fonts and accent (#D4907E) so they match
   the site visually while staying fully independent and safe to ship.
   ========================================================================== */

:root{
  --blush:#F2E0D6;--rose:#D4907E;--deep-rose:#B5685A;--dark-rose:#8E4D41;
  --cream:#FFFAF7;--warm-white:#FFFDFB;--charcoal:#2D2A28;--soft-black:#3A3633;
  --muted:#8C7E78;--muted-light:#B0A49E;--gold:#C9A96E;--gold-light:#F5ECD8;
  --shadow-sm:0 1px 3px rgba(45,42,40,.06);--shadow-md:0 4px 16px rgba(45,42,40,.08);
  --radius:16px;--radius-sm:10px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:var(--cream);color:var(--charcoal);line-height:1.6;
  min-height:100vh;-webkit-font-smoothing:antialiased;
  -webkit-text-size-adjust:100%;text-size-adjust:100%;
}

/* ---------- Header (matches app top nav, root-relative links) ---------- */
.lrn-topnav{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;gap:16px;
  padding:12px 20px;
  background:rgba(255,253,251,.9);backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--blush);
}
.lrn-logo{display:inline-flex;align-items:center;flex-shrink:0}
.lrn-logo img{height:30px;width:auto;display:block}
.lrn-nav{display:flex;align-items:center;gap:20px;margin-left:auto}
.lrn-nav a{
  font-size:.86rem;font-weight:600;color:var(--muted);
  text-decoration:none;transition:color .2s;
}
.lrn-nav a:hover{color:var(--deep-rose)}
.lrn-nav a.active{color:var(--deep-rose)}
.lrn-cta{
  display:inline-flex;align-items:center;gap:5px;
  padding:9px 16px;background:var(--deep-rose);color:#fff !important;
  border-radius:var(--radius-sm);font-size:.84rem;font-weight:700;
  text-decoration:none;transition:background .2s,transform .2s;
}
.lrn-cta:hover{background:var(--dark-rose);transform:translateY(-1px)}
@media(max-width:640px){
  .lrn-nav{gap:14px}
  .lrn-nav a:not(.lrn-cta){display:none}
}

/* ---------- Layout ---------- */
.lrn-wrap{max-width:720px;margin:0 auto;padding:0 20px}
.lrn-main{padding:36px 0 56px}

.lrn-breadcrumb{
  font-size:.78rem;color:var(--muted);margin-bottom:18px;
}
.lrn-breadcrumb a{color:var(--muted);text-decoration:none;font-weight:600}
.lrn-breadcrumb a:hover{color:var(--deep-rose)}
.lrn-breadcrumb span{color:var(--muted-light)}

/* ---------- Typography ---------- */
h1,h2,h3{font-family:'Cormorant Garamond',Georgia,serif;color:var(--charcoal);line-height:1.18;font-weight:700}
.lrn-main h1{font-size:2.3rem;margin-bottom:14px;letter-spacing:-.5px}
.lrn-main h2{font-size:1.6rem;margin:38px 0 12px}
.lrn-main h3{font-size:1.2rem;margin:24px 0 8px;font-family:'DM Sans',sans-serif;font-weight:700}
.lrn-main p{margin-bottom:16px;color:var(--soft-black)}
.lrn-main ul,.lrn-main ol{margin:0 0 18px 1.2em;color:var(--soft-black)}
.lrn-main li{margin-bottom:9px;padding-left:4px}
.lrn-main a{color:var(--deep-rose);font-weight:600;text-underline-offset:2px}
.lrn-main strong{color:var(--charcoal)}
.lrn-lede{font-size:1.05rem;color:var(--muted);font-style:italic;margin-bottom:22px}

.lrn-hr{border:none;border-top:1px solid var(--blush);margin:34px 0}

/* Pull-quote / reframe */
.lrn-main blockquote{
  margin:24px 0;padding:16px 20px;
  background:linear-gradient(135deg,#FFF5F0,var(--blush));
  border-left:4px solid var(--rose);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-family:'Cormorant Garamond',Georgia,serif;font-size:1.35rem;
  color:var(--dark-rose);font-style:italic;line-height:1.4;
}
.lrn-main blockquote p{margin:0;color:inherit}

/* Sister-size callout list rendering */
.lrn-callout{
  background:var(--gold-light);border-radius:var(--radius-sm);
  padding:14px 18px;margin:0 0 18px;
}

/* ---------- In-article CTA card ---------- */
.lrn-cta-card{
  background:linear-gradient(135deg,#FFF8F5,#FFF0EB);
  border:1px solid rgba(212,144,126,.25);border-radius:var(--radius);
  padding:22px 22px;margin:30px 0;box-shadow:var(--shadow-sm);
}
.lrn-cta-card p{margin-bottom:14px;color:var(--soft-black)}
.lrn-cta-card .lrn-btn{margin-top:2px}
.lrn-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:13px 22px;background:var(--deep-rose);color:#fff !important;
  border-radius:var(--radius-sm);font-weight:700;font-size:.95rem;
  text-decoration:none;transition:background .2s,transform .2s;
}
.lrn-btn:hover{background:var(--dark-rose);transform:translateY(-1px)}
.lrn-btn-note{display:block;margin-top:8px;font-size:.78rem;color:var(--muted)}

/* ---------- FAQ block ---------- */
.lrn-faq{margin:8px 0 0}
.lrn-faq-item{
  background:#fff;border:1px solid #F0E8E4;border-radius:12px;
  padding:16px 18px;margin-bottom:10px;box-shadow:var(--shadow-sm);
}
.lrn-faq-item h3{margin:0 0 6px;font-size:1rem}
.lrn-faq-item p{margin:0;font-size:.92rem;color:#6A5A5A}

/* ---------- Sources ---------- */
.lrn-sources{font-size:.84rem;color:var(--muted)}
.lrn-sources li{margin-bottom:10px}

/* ---------- Problem grid (pillar pages) ---------- */
.lrn-prob-grid{list-style:none;margin:24px 0 0;padding:0;display:grid;gap:10px}
.lrn-prob-card{
  display:flex;align-items:center;gap:13px;background:#fff;
  border:1px solid #F0E8E4;border-radius:12px;padding:14px 16px;
  text-decoration:none;box-shadow:var(--shadow-sm);
  transition:border-color .2s,transform .2s,box-shadow .2s;
}
.lrn-prob-card:hover{border-color:var(--rose);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.lrn-prob-emoji{font-size:1.4rem;flex-shrink:0;line-height:1}
.lrn-prob-body{flex:1;min-width:0}
.lrn-prob-title{font-weight:700;color:var(--charcoal);font-size:.95rem}
.lrn-prob-badge{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--deep-rose);background:#FFF0EB;padding:2px 7px;border-radius:10px;margin-left:7px;vertical-align:middle;white-space:nowrap}
.lrn-prob-tag{font-size:.82rem;color:var(--muted);margin-top:2px;line-height:1.4}
.lrn-prob-arrow{color:var(--deep-rose);font-weight:700;flex-shrink:0;font-size:1.1rem}

/* anchored seed sections — keep heading clear of the sticky header on jump */
.lrn-section{scroll-margin-top:84px}
.lrn-section h2{margin-top:0}
.lrn-seed-label{font-weight:700;color:var(--charcoal)}

/* ---------- Hub index listing ---------- */
.lrn-hub-head{margin-bottom:8px}
.lrn-hub-head h1{font-size:2.5rem;margin-bottom:6px}
.lrn-hub-head p{color:var(--muted);font-size:1rem}
.lrn-article-list{list-style:none;margin:26px 0 0;padding:0}
.lrn-article-list li{margin:0 0 14px;padding:0}
.lrn-article-card{
  display:block;background:#fff;border:1px solid #F0E8E4;
  border-radius:var(--radius);padding:20px 22px;text-decoration:none;
  box-shadow:var(--shadow-sm);transition:border-color .2s,transform .2s,box-shadow .2s;
}
.lrn-article-card:hover{border-color:var(--rose);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.lrn-article-card h2{font-size:1.35rem;margin:0 0 6px;color:var(--charcoal)}
.lrn-article-card p{margin:0;color:var(--muted);font-size:.92rem}
.lrn-article-card .lrn-readmore{
  display:inline-block;margin-top:10px;color:var(--deep-rose);
  font-weight:700;font-size:.86rem;font-family:'DM Sans',sans-serif;
}

/* ---------- Footer (matches app footer, root-relative links) ---------- */
.lrn-footer{
  background:var(--warm-white);border-top:1px solid var(--blush);
  padding:40px 20px 48px;margin-top:20px;
}
.lrn-footer-grid{
  max-width:720px;margin:0 auto;display:grid;
  grid-template-columns:1.6fr 1fr 1fr;gap:28px;
}
.lrn-footer-wordmark img{height:34px;width:auto;display:block}
.lrn-footer-tagline{font-size:.84rem;color:var(--muted);margin-top:10px;line-height:1.55;max-width:280px}
.lrn-footer-credit{font-size:.72rem;color:var(--muted-light);margin-top:14px;line-height:1.5}
.lrn-footer-credit a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.lrn-footer-col-title{font-size:.74rem;text-transform:uppercase;letter-spacing:1.2px;font-weight:700;color:var(--muted-light);margin-bottom:10px}
.lrn-footer-col a{display:block;font-size:.86rem;color:var(--soft-black);text-decoration:none;margin-bottom:8px;transition:color .2s}
.lrn-footer-col a:hover{color:var(--deep-rose)}
@media(max-width:640px){
  .lrn-footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .lrn-footer-wordmark,.lrn-footer-brand{grid-column:1 / -1}
}