/* =========================================================================
   PeptideCompare — Article Reading Experience  (scoped, additive)
   Enhances the existing .body-content markup into an editorial layout
   without touching the site-wide design.css.
   ========================================================================= */

/* ---- reading progress bar ---------------------------------------------- */
.read-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:400;
  background:linear-gradient(90deg,var(--teal),var(--sky));transition:width .08s linear;}

/* ---- article shell ----------------------------------------------------- */
.article-shell{max-width:1100px;margin:0 auto;padding:0 22px;}
.article-grid{display:grid;grid-template-columns:1fr;gap:0;}

/* ---- hero ---------------------------------------------------------------*/
.art-hero{padding:8px 32px 4px;}
@media (max-width:640px){
  .art-hero{padding:8px 20px 4px;}
}
.art-hero .crumbs{margin-bottom:18px;}
.art-eyebrow-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:16px;}
.art-eyebrow-row .eyebrow{margin-bottom:0;}
.art-meta{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);
  font-size:11px;color:var(--ink-faint);letter-spacing:.3px;}
.art-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-faint);}
.art-meta svg{width:13px;height:13px;stroke:var(--ink-faint);fill:none;stroke-width:1.6;}

.body-content h1, .article-h1{font-family:var(--display);font-weight:700;
  font-size:clamp(30px,4.6vw,50px);line-height:1.08;letter-spacing:-1px;
  color:var(--ink);max-width:18ch;margin:0 0 20px;}
.art-hero h1 em{font-style:italic;color:var(--teal-deep);font-weight:500;}

.art-lead{font-size:clamp(16px,2vw,19px);line-height:1.6;color:var(--ink-soft);
  max-width:62ch;margin:0 0 28px;font-weight:400;}

/* hero divider with subtle gradient */
.art-rule{height:1px;border:0;margin:8px 0 30px;
  background:linear-gradient(90deg,var(--line-strong),transparent);}

/* ---- key takeaways card ------------------------------------------------ */
.key-takeaways{background:linear-gradient(135deg,var(--teal-tint),#fff 75%);
  border:1px solid #cce8dc;border-radius:var(--r-lg);padding:22px 24px;margin:6px 0 36px;}
.key-takeaways .kt-head{display:flex;align-items:center;gap:9px;font-family:var(--mono);
  font-size:11px;font-weight:700;letter-spacing:1.2px;color:var(--teal-deep);
  text-transform:uppercase;margin-bottom:14px;}
.key-takeaways .kt-head svg{width:15px;height:15px;stroke:var(--teal-deep);fill:none;stroke-width:2;}
.key-takeaways ul{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.key-takeaways li{display:flex;gap:11px;font-size:14px;line-height:1.55;color:var(--ink);}
.key-takeaways li::before{content:"";flex-shrink:0;width:7px;height:7px;margin-top:7px;
  border-radius:50%;background:var(--teal);}

/* ---- body column ------------------------------------------------------- */
.body-content{font-size:16px;}
/* body-content sits inside .art-hero (which carries the horizontal padding),
   so page-wrap only needs to remove the legacy max-width cap */
.body-content .page-wrap{max-width:none;margin:0;padding:0;}
.body-content > div{margin-bottom:0;}

/* paragraphs */
.body-content p{font-size:16.5px;line-height:1.78;color:#33433d;margin:0 0 18px;
  max-width:68ch;}
.body-content strong{color:var(--ink);font-weight:600;}

/* section headings with accent tick */
.body-content h2{font-family:var(--display);font-weight:700;
  font-size:clamp(22px,2.6vw,28px);line-height:1.2;letter-spacing:-.5px;color:var(--ink);
  margin:46px 0 16px;padding-top:10px;position:relative;max-width:30ch;}
.body-content h2::before{content:"";position:absolute;top:-8px;left:0;width:42px;height:3px;
  border-radius:3px;background:linear-gradient(90deg,var(--teal),var(--sky));}
.body-content h3{font-family:var(--display);font-weight:700;font-size:18px;
  color:var(--ink);margin:26px 0 10px;}

.body-content ul, .body-content ol{margin:0 0 18px;padding-left:0;list-style:none;max-width:66ch;}
.body-content ul li, .body-content ol li{position:relative;padding-left:24px;margin-bottom:10px;
  font-size:16px;line-height:1.7;color:#33433d;}
.body-content ul li::before{content:"";position:absolute;left:3px;top:10px;width:6px;height:6px;
  border-radius:50%;background:var(--teal);}
.body-content ol{counter-reset:li;}
.body-content ol li{counter-increment:li;}
.body-content ol li::before{content:counter(li);position:absolute;left:0;top:1px;
  font-family:var(--mono);font-size:12px;font-weight:600;color:var(--teal-deep);
  background:var(--teal-tint);width:18px;height:18px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;}

/* ---- enhanced comparison/option cards (the old .g2col) ----------------- */
.body-content .g2col{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0 26px;}
.body-content .g2col > div{background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:20px 20px 18px;position:relative;overflow:hidden;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;}
.body-content .g2col > div:hover{transform:translateY(-2px);
  box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.body-content .g2col > div::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--teal),var(--sky));opacity:.85;}
.body-content .g2col > div > div:first-child{font-weight:700;font-family:var(--display);
  font-size:15px;margin-bottom:8px;color:var(--ink);letter-spacing:-.2px;line-height:1.3;}
.body-content .g2col > div p{font-size:14px;line-height:1.62;margin-bottom:10px;color:var(--ink-soft);}
/* status line = last child div inside a card */
.body-content .g2col > div > div:last-child:not(:first-child){
  font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.2px;
  color:var(--ink-soft);padding:7px 11px;background:var(--bg2);border:1px solid var(--line);
  border-radius:8px;display:inline-block;margin-top:2px;}

/* accent variants by leading glyph in status line */
.body-content .g2col > div:has(> div:last-child:not(:first-child)) {}

/* ---- callout / "how PeptideCompare uses" box --------------------------- */
/* The articles end with a highlighted div: <div><div>LABEL</div><p>..</p></div>
   Target a div that directly contains an UPPERCASE label div + p. */
.body-content .pc-note{margin:34px 0 8px;padding:22px 24px;
  background:linear-gradient(135deg,var(--amber-tint),#fff 80%);
  border:1px solid var(--amber-line);border-radius:var(--r-lg);}
.body-content .pc-note > div:first-child{font-family:var(--mono);font-size:11px;font-weight:700;
  letter-spacing:1.2px;color:var(--amber-deep);margin-bottom:10px;text-transform:uppercase;}
.body-content .pc-note p{margin:0;font-size:14.5px;line-height:1.7;color:#4a4030;max-width:none;}

/* ---- warning rows (red-flag lists like in coa-guide) ------------------- */
.body-content .flag-row{display:flex;gap:13px;padding:15px 16px;background:#fff;
  border:1px solid var(--line);border-left:3px solid var(--amber);border-radius:12px;
  margin-bottom:10px;align-items:flex-start;}
.body-content .flag-row > span:first-child{color:var(--amber-deep);font-size:15px;flex-shrink:0;
  line-height:1.5;}
.body-content .flag-row > div{font-size:14.5px;line-height:1.62;color:var(--ink-soft);}
.body-content .flag-row strong{color:var(--ink);}

/* ---- plain fact rows (def-list style stacks) --------------------------- */
.body-content .fact-stack{display:grid;gap:10px;margin:18px 0 26px;}
.body-content .fact-stack > div{padding:14px 16px;background:var(--bg2);
  border:1px solid var(--line);border-radius:12px;font-size:14.5px;line-height:1.62;color:var(--ink-soft);}
.body-content .fact-stack > div strong{color:var(--ink);}

/* ---- inline source citation footer ------------------------------------- */
.art-sources{margin:44px 0 0;padding:22px 0 0;border-top:1px solid var(--line);}
.art-sources .src-head{font-family:var(--mono);font-size:10.5px;font-weight:700;
  letter-spacing:1.2px;color:var(--ink-faint);text-transform:uppercase;margin-bottom:12px;}
.art-sources ul{list-style:none;margin:0;padding:0;display:grid;gap:7px;max-width:none;}
.art-sources li{padding-left:0;font-size:12.5px;color:var(--ink-faint);line-height:1.5;}
.art-sources li::before{display:none;}
.art-sources a{color:var(--teal-deep);text-decoration:none;}
.art-sources a:hover{text-decoration:underline;}

/* ---- "read next" related articles ------------------------------------- */
.art-related{margin:52px 0 10px;}
.art-related .rel-head{font-family:var(--display);font-weight:700;font-size:20px;
  color:var(--ink);margin-bottom:18px;}
.art-related .rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.art-related .rel-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px;text-decoration:none;display:block;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;}
.art-related .rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.art-related .rel-card .rel-cat{font-family:var(--mono);font-size:10px;font-weight:600;
  letter-spacing:.6px;color:var(--teal-deep);text-transform:uppercase;}
.art-related .rel-card h4{font-family:var(--display);font-weight:700;font-size:15.5px;
  color:var(--ink);margin:7px 0 0;line-height:1.3;}
.art-related .rel-card .rel-arrow{margin-top:12px;color:var(--teal-deep);font-size:13px;font-weight:600;}

/* ---- responsive -------------------------------------------------------- */
@media (max-width:880px){
  .body-content .g2col{grid-template-columns:1fr;}
  .art-related .rel-grid{grid-template-columns:1fr;}
  .body-content p, .art-lead{max-width:none;}
}
@media (prefers-reduced-motion:reduce){
  .body-content .g2col > div, .art-related .rel-card{transition:none;}
  .body-content .g2col > div:hover, .art-related .rel-card:hover{transform:none;}
  .read-progress{transition:none;}
}

/* ---- Khavinson: organ-system compound grid ----------------------------- */
.organ-systems{display:grid;gap:22px;margin:20px 0 30px;}
.organ-group{}
.organ-group .organ-label{display:flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:10.5px;font-weight:700;letter-spacing:1.4px;
  color:var(--teal-deep);text-transform:uppercase;margin:0 0 11px;}
.organ-group .organ-label::after{content:"";flex:1;height:1px;
  background:linear-gradient(90deg,var(--line-strong),transparent);}
.organ-group .compound-row{display:grid;
  grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px;}
.compound-card{display:flex;flex-direction:column;gap:5px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:13px 15px;text-decoration:none;position:relative;
  transition:transform .14s ease,box-shadow .14s ease,border-color .14s ease;}
.compound-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);
  border-color:var(--line-strong);}
.compound-card .cc-top{display:flex;align-items:center;gap:8px;}
.compound-card .cc-name{font-family:var(--display);font-weight:700;font-size:15px;
  color:var(--ink);letter-spacing:-.2px;line-height:1.2;}
.compound-card .cc-tissue{font-size:12.5px;line-height:1.45;color:var(--ink-soft);}
.compound-card .cc-tag{font-family:var(--mono);font-size:8.5px;font-weight:700;
  letter-spacing:.6px;text-transform:uppercase;padding:2px 6px;border-radius:6px;
  line-height:1;flex-shrink:0;}
.compound-card .cc-tag.syn{color:var(--teal-deep);background:var(--teal-tint);}
.compound-card .cc-tag.nat{color:var(--amber-deep);background:var(--amber-tint);
  border:1px solid var(--amber-line);}
.compound-card .cc-arrow{position:absolute;top:13px;right:14px;color:var(--ink-faint);
  font-size:13px;opacity:0;transition:opacity .14s ease,transform .14s ease;}
.compound-card:hover .cc-arrow{opacity:1;transform:translateX(2px);}
@media (max-width:880px){
  .organ-group .compound-row{grid-template-columns:1fr;}
}

/* ---- reusable: compound deck (glyph + title + desc + status pill) ------- */
.compound-deck{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:14px;margin:22px 0 28px;}
.cd-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 19px 16px;position:relative;overflow:hidden;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;}
.cd-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.cd-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--teal),var(--sky));opacity:.85;}
.cd-head{display:flex;align-items:center;gap:10px;margin-bottom:9px;}
.cd-glyph{font-size:19px;line-height:1;flex-shrink:0;}
.cd-title{font-family:var(--display);font-weight:700;font-size:14.5px;letter-spacing:-.2px;
  color:var(--ink);line-height:1.25;}
.cd-card p{font-size:13.5px;line-height:1.6;color:var(--ink-soft);margin:0 0 12px;max-width:none;}
.cd-status{display:inline-block;font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.2px;color:var(--ink-soft);padding:7px 11px;background:var(--bg2);
  border:1px solid var(--line);border-radius:8px;line-height:1.4;}
.cd-status.warn{color:var(--amber-deep);background:var(--amber-tint);border-color:var(--amber-line);}
.cd-status.emerg{color:var(--sky-deep);background:var(--sky-tint);border-color:#d3e0fb;}

/* ---- reusable: numbered step flow -------------------------------------- */
.step-flow{margin:8px 0 30px;}
.step-flow .sf-head{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:1.2px;
  color:var(--teal-deep);text-transform:uppercase;margin-bottom:16px;}
.step-flow .sf-list{display:grid;gap:0;position:relative;}
.sf-step{display:grid;grid-template-columns:auto 1fr;gap:16px;padding:0 0 22px;position:relative;}
.sf-step:last-child{padding-bottom:0;}
.sf-num{width:32px;height:32px;border-radius:50%;flex-shrink:0;z-index:1;
  background:linear-gradient(135deg,var(--teal),var(--teal-deep));color:#fff;
  font-family:var(--mono);font-size:14px;font-weight:600;
  display:flex;align-items:center;justify-content:center;}
/* connector line */
.sf-step:not(:last-child)::before{content:"";position:absolute;left:15px;top:34px;bottom:0;
  width:2px;background:linear-gradient(180deg,var(--teal-tint),var(--line));}
.sf-body{padding-top:5px;}
.sf-body strong{display:block;font-family:var(--display);font-weight:700;font-size:15px;
  color:var(--ink);margin-bottom:4px;line-height:1.25;}
.sf-body span{font-size:14px;line-height:1.6;color:var(--ink-soft);}

/* ---- reusable: check-reason list --------------------------------------- */
.check-list{display:grid;gap:10px;margin:18px 0 26px;}
.check-list > div{display:flex;gap:13px;padding:15px 16px;background:#fff;
  border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:12px;
  align-items:flex-start;}
.check-list > div > span:first-child{color:var(--teal);font-size:15px;flex-shrink:0;
  font-weight:700;line-height:1.5;}
.check-list > div > div{font-size:14.5px;line-height:1.62;color:var(--ink-soft);}
.check-list strong{color:var(--ink);}

/* ---- reusable: mini bottom-line callout -------------------------------- */
.mini-callout{display:flex;gap:13px;align-items:flex-start;margin:28px 0 8px;
  padding:18px 20px;background:var(--teal-tint);border:1px solid #cce8dc;border-radius:var(--r-md);}
.mini-callout strong{font-family:var(--display);color:var(--teal-deep);flex-shrink:0;font-size:14.5px;}
.mini-callout span{font-size:14.5px;line-height:1.65;color:#2c4a40;}

@media (max-width:880px){
  .compound-deck{grid-template-columns:1fr;}
}