/* ==========================================================================
   togo-page-blog.css — Cluster 10 page-scoped polish
   ──────────────────────────────────────────────────────────────────────────
   Scope:  body[data-page="blog-hub"]      → /blog/index.html
           body[data-page="blog-article"]  → individual research articles
   Loads AFTER blog.css + togo-blog-polish.css. Never overrides outside scope.

   Issues addressed (15):
     B1  · hub: section-rail rhythm + section--surface contrast on light
     B2  · hub: blog-card hard-coded colors leak in light theme
     B3  · hub: blog-card cover-icon gradient too saturated in light
     B4  · hub: blog-card uneven heights when excerpts vary
     B5  · hub: cat-section-head__count strong color in light theme
     B6  · article: body type tokens instead of hard-coded #dadae0/#cbd5e1
     B7  · article: paragraph spacing rhythm + h2/h3 cadence
     B8  · article: TOC sticky offset vs sticky-header (--header-height)
     B9  · article: TOC focus-visible ring + scrollbar in light theme
     B10 · article: code/<pre> overflow handling (only inline used today,
             but pre-block forward-fix for future code)
     B11 · article: citation [N] anchor pill consistency (cite-ref + raw)
     B12 · article: byline meta — author/date/reading-time alignment
     B13 · article: heading anchor link visibility on hover (≥WCAG focus)
     B14 · article: references list — link underline + PMID pill contrast
     B15 · light theme: callouts, tables, blockquote, references — paper-white
========================================================================== */


/* ── B1 · Hub: section rhythm + section--surface contrast ────────────── */
body[data-page="blog-hub"] .section {
  padding-block: clamp(40px, 6vw, 72px);
}
body[data-page="blog-hub"] .section--surface {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.015) 0%,
    rgba(255, 255, 255, 0.025) 50%,
    rgba(255, 255, 255, 0.015) 100%
  );
}
html[data-theme="light"] body[data-page="blog-hub"] .section--surface {
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.018) 0%,
    rgba(0, 0, 0, 0.028) 50%,
    rgba(0, 0, 0, 0.018) 100%
  );
}

/* ── B5 · Hub: section head count tokenized ──────────────────────────── */
body[data-page="blog-hub"] .cat-section-head__count {
  color: var(--color-text-muted);
}
body[data-page="blog-hub"] .cat-section-head__count strong {
  color: var(--color-text);
}


/* ── B2/B3 · Hub: blog-card token-based + light-theme cover ──────────── */
body[data-page="blog-hub"] .blog-card {
  background: var(--color-bg-elevated, #0e0e11);
  border-color: var(--color-line, rgba(255, 255, 255, 0.08));
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-card:hover {
  border-color: rgba(184, 37, 47, 0.32);
  box-shadow: 0 12px 32px -6px rgba(0, 0, 0, 0.12);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-card__cover {
  background: linear-gradient(135deg, rgba(184, 37, 47, 0.10) 0%, #faf8f3 80%);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-card__cover-icon {
  background: linear-gradient(135deg, #c2272e, #8b1820);
  box-shadow: 0 6px 18px rgba(184, 37, 47, 0.28);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-card__tag {
  color: var(--color-accent-on-weak, #99161D);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-card__title {
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-card__excerpt {
  color: var(--color-text-muted);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-card__meta {
  color: var(--color-text-faint);
  border-top-color: rgba(0, 0, 0, 0.06);
}

/* ── B4 · Hub: equal-height card flex consistency ────────────────────── */
body[data-page="blog-hub"] .blog-grid {
  align-items: stretch;
}
body[data-page="blog-hub"] .blog-card__title {
  /* clamp to 3 lines on narrow cards so cover-row baselines align */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
body[data-page="blog-hub"] .blog-card__excerpt {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── B2 · Hub: focus-visible ring (WCAG AA, both themes) ─────────────── */
body[data-page="blog-hub"] .blog-card:focus-visible {
  outline: 2px solid var(--color-accent, #e01b1b);
  outline-offset: 3px;
  border-radius: 14px;
}


/* ── B1/B2 · Hub: hero light-theme — radial reds too hot on paper ────── */
html[data-theme="light"] body[data-page="blog-hub"] .blog-hub-hero {
  background-image:
    radial-gradient(ellipse 60% 50% at 80% 0%, rgba(184, 37, 47, 0.10), transparent 60%),
    radial-gradient(ellipse 55% 50% at 20% -10%, rgba(140, 30, 30, 0.08), transparent 55%);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-hub-hero__title {
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-hub-hero__lead {
  color: var(--color-text-soft);
}
html[data-theme="light"] body[data-page="blog-hub"] .blog-hub-hero__eyebrow {
  color: var(--color-accent-on-weak, #99161D);
}


/* ═════════════════════════════════════════════════════════════════════
   ARTICLE PAGE
   ═════════════════════════════════════════════════════════════════════ */

/* ── B6/B7 · Article body — token-based color + tightened rhythm ─────── */
body[data-page="blog-article"] .article-body {
  color: var(--color-text-soft);
}
body[data-page="blog-article"] .article-body p {
  color: var(--color-text-soft);
}
body[data-page="blog-article"] .article-body > * + * {
  margin-top: 1.1em;
}
body[data-page="blog-article"] .article-body p + p {
  margin-top: 1.1em;
}
body[data-page="blog-article"] .article-body h2 + p,
body[data-page="blog-article"] .article-body h3 + p {
  margin-top: 0.4em;
}
body[data-page="blog-article"] .article-body h2 {
  /* Slightly tighter h2 cadence — 48 was too airy */
  margin: 44px 0 12px;
  color: var(--color-text);
}
body[data-page="blog-article"] .article-body h3 {
  margin: 28px 0 8px;
  color: var(--color-text);
}
body[data-page="blog-article"] .article-body strong {
  color: var(--color-text);
}
body[data-page="blog-article"] .article-body ul,
body[data-page="blog-article"] .article-body ol {
  color: var(--color-text-soft);
}


/* ── B12 · Byline alignment — flex-wrap safety on narrow viewport ───── */
body[data-page="blog-article"] .article-byline {
  flex-wrap: wrap;
  row-gap: 8px;
}
body[data-page="blog-article"] .article-byline__reading-time {
  margin-left: auto;
}
@media (max-width: 520px) {
  body[data-page="blog-article"] .article-byline__reading-time {
    margin-left: 52px; /* align under text, past avatar */
    width: 100%;
  }
}

/* Mobile article hero density: the base hero kept the byline + print action
   almost a full viewport tall before the first paragraph. Keep all metadata
   visible, but reduce the vertical chrome so research content starts sooner. */
@media (max-width: 640px) {
  body[data-page="blog-article"] .article-hero {
    padding: 26px 0 18px;
  }

  body[data-page="blog-article"] .article-meta-top {
    margin-bottom: 10px;
  }

  body[data-page="blog-article"] .article-title {
    margin-bottom: 12px;
  }

  body[data-page="blog-article"] .article-deck {
    margin-bottom: 16px;
    line-height: 1.48;
  }

  body[data-page="blog-article"] .article-byline {
    gap: 10px 12px;
    margin-bottom: 14px;
    padding-block: 10px;
  }

  body[data-page="blog-article"] .article-byline__author-avatar {
    width: 34px;
    height: 34px;
    font-size: 12px;
  }

  body[data-page="blog-article"] .article-byline__details {
    line-height: 1.28;
  }

  body[data-page="blog-article"] .article-hero .print-button {
    min-height: 38px;
    padding-block: 8px;
  }
}


/* ── B11 · Inline citation [N] pill — consistency for both raw + cite-ref */
body[data-page="blog-article"] .article-body a.cite-ref {
  font-size: 0.78em;
  vertical-align: super;
  line-height: 1;
  padding: 1px 4px;
  margin: 0 1px;
  border-radius: 4px;
  background: var(--color-accent-soft);
  color: var(--color-accent, #ff5e5e);
  text-decoration: none;
  font-weight: 600;
  transition: background 140ms ease, color 140ms ease;
}
body[data-page="blog-article"] .article-body a.cite-ref:hover,
body[data-page="blog-article"] .article-body a.cite-ref:focus-visible {
  background: var(--color-accent, #e01b1b);
  color: #fff;
  outline: none;
}
html[data-theme="light"] body[data-page="blog-article"] .article-body a.cite-ref {
  color: var(--color-accent-on-weak, #99161D);
}
html[data-theme="light"] body[data-page="blog-article"] .article-body a.cite-ref:hover,
html[data-theme="light"] body[data-page="blog-article"] .article-body a.cite-ref:focus-visible {
  background: var(--color-accent-on-weak, #99161D);
  color: #fff;
}


/* ── B10 · Code block overflow (forward-fix for future <pre>) ─────── */
body[data-page="blog-article"] .article-body pre {
  margin: 20px 0;
  padding: 16px 18px;
  background: var(--color-surface, #111114);
  border: 1px solid var(--color-line, rgba(255, 255, 255, 0.08));
  border-radius: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-text-soft);
  /* preserve newlines; allow horizontal scroll for long lines */
  white-space: pre;
  tab-size: 2;
}
body[data-page="blog-article"] .article-body pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
  color: inherit;
}
/* mobile: very long single-line code in tables (e.g. peptide sequence)
   must wrap to avoid horizontal page scroll */
@media (max-width: 640px) {
  body[data-page="blog-article"] .article-compare code {
    word-break: break-all;
  }
  body[data-page="blog-article"] .article-compare {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}


/* ── B8 · TOC sticky offset relative to actual header height ─────────── */
@media (min-width: 1024px) {
  body[data-page="blog-article"] #togo-toc {
    /* Header is 64px (--header-height) + 24px breathing room */
    top: calc(var(--header-height, 64px) + 24px);
    max-height: calc(100vh - var(--header-height, 64px) - 48px);
  }
}

/* ── B9 · TOC focus-visible + light-theme contrast ───────────────────── */
body[data-page="blog-article"] #togo-toc .togo-toc__link:focus-visible {
  outline: 2px solid var(--color-accent, #e01b1b);
  outline-offset: 2px;
}
html[data-theme="light"] body[data-page="blog-article"] #togo-toc {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(0, 0, 0, 0.10);
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-article"] #togo-toc .togo-toc__title {
  color: var(--color-text-muted);
}
html[data-theme="light"] body[data-page="blog-article"] #togo-toc .togo-toc__link {
  color: var(--color-text-soft);
}
html[data-theme="light"] body[data-page="blog-article"] #togo-toc .togo-toc__link:hover {
  background: rgba(0, 0, 0, 0.04);
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-article"] #togo-toc .togo-toc__link.is-active {
  background: rgba(184, 37, 47, 0.10);
  border-left-color: var(--color-accent-on-weak, #99161D);
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-article"] #togo-toc .togo-toc__num {
  color: var(--color-text-faint);
}


/* ── B13 · Heading anchor — better visibility on hover, mobile safe ──── */
body[data-page="blog-article"] .article-body h2 .h-anchor,
body[data-page="blog-article"] .article-body h3 .h-anchor {
  color: var(--color-text-faint);
}
body[data-page="blog-article"] .article-body h2:hover .h-anchor,
body[data-page="blog-article"] .article-body h3:hover .h-anchor,
body[data-page="blog-article"] .article-body h2 .h-anchor:focus-visible,
body[data-page="blog-article"] .article-body h3 .h-anchor:focus-visible {
  opacity: 1;
  color: var(--color-accent, #e01b1b);
  outline: none;
}
html[data-theme="light"] body[data-page="blog-article"] .article-body h2 .h-anchor:hover,
html[data-theme="light"] body[data-page="blog-article"] .article-body h3 .h-anchor:hover {
  color: var(--color-accent-on-weak, #99161D);
  background: rgba(0, 0, 0, 0.05);
}


/* ── B14 · References — light-theme + tightened PMID pill ────────────── */
body[data-page="blog-article"] .article-references {
  background: var(--color-surface, #0d0d10);
  border-color: var(--color-line, rgba(255, 255, 255, 0.08));
}
body[data-page="blog-article"] .article-references li {
  color: var(--color-text-soft);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}
body[data-page="blog-article"] .article-references a {
  color: var(--color-text);
  border-bottom: 1px solid var(--color-accent-soft);
  text-decoration: none;
}
body[data-page="blog-article"] .article-references a:hover {
  border-bottom-color: var(--color-accent, #e01b1b);
}
body[data-page="blog-article"] .article-references .ref__pmid {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-muted);
}
html[data-theme="light"] body[data-page="blog-article"] .article-references {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.10);
}
html[data-theme="light"] body[data-page="blog-article"] .article-references li {
  border-bottom-color: rgba(0, 0, 0, 0.06);
}
html[data-theme="light"] body[data-page="blog-article"] .article-references li::before {
  color: var(--color-accent-on-weak, #99161D);
}
html[data-theme="light"] body[data-page="blog-article"] .article-references a {
  color: var(--color-text);
  border-bottom-color: rgba(184, 37, 47, 0.32);
}
html[data-theme="light"] body[data-page="blog-article"] .article-references .ref__pmid {
  background: rgba(0, 0, 0, 0.05);
  color: var(--color-text-muted);
}


/* ── B15 · Light theme — callouts, tables, blockquote, code, meta ────── */
html[data-theme="light"] body[data-page="blog-article"] .article-hero {
  background-image:
    radial-gradient(ellipse 60% 40% at 70% 0%, rgba(184, 37, 47, 0.08), transparent 60%),
    radial-gradient(ellipse 50% 40% at 25% -10%, rgba(140, 30, 30, 0.06), transparent 55%);
}
html[data-theme="light"] body[data-page="blog-article"] .article-title {
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-article"] .article-deck {
  color: var(--color-text-soft);
}
html[data-theme="light"] body[data-page="blog-article"] .article-meta-top {
  color: var(--color-text-muted);
}
html[data-theme="light"] body[data-page="blog-article"] .article-meta-top a {
  color: var(--color-text-soft);
}
html[data-theme="light"] body[data-page="blog-article"] .article-meta-top a:hover {
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-article"] .article-meta-top__tag {
  background: rgba(184, 37, 47, 0.08);
  color: var(--color-accent-on-weak, #99161D);
  border-color: rgba(184, 37, 47, 0.20);
}
html[data-theme="light"] body[data-page="blog-article"] .article-byline {
  border-top-color: rgba(0, 0, 0, 0.08);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}
html[data-theme="light"] body[data-page="blog-article"] .article-byline__author {
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-article"] .article-byline__details {
  color: var(--color-text-muted);
}
html[data-theme="light"] body[data-page="blog-article"] .article-byline__reading-time {
  color: var(--color-text-muted);
}
html[data-theme="light"] body[data-page="blog-article"] .article-byline__author-avatar {
  background: linear-gradient(135deg, #c2272e, #8b1820);
}

/* Article body — paper-white readability */
html[data-theme="light"] body[data-page="blog-article"] .article-body,
html[data-theme="light"] body[data-page="blog-article"] .article-body p,
html[data-theme="light"] body[data-page="blog-article"] .article-body ul,
html[data-theme="light"] body[data-page="blog-article"] .article-body ol {
  color: #1f1f24;        /* ~13:1 on #FCFAF6 cream */
}
html[data-theme="light"] body[data-page="blog-article"] .article-body h2,
html[data-theme="light"] body[data-page="blog-article"] .article-body h3,
html[data-theme="light"] body[data-page="blog-article"] .article-body strong {
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-article"] .article-body a {
  color: var(--color-accent-on-weak, #99161D);
  text-decoration-color: rgba(184, 37, 47, 0.45);
}
html[data-theme="light"] body[data-page="blog-article"] .article-body a:hover {
  color: var(--color-text);
  text-decoration-color: var(--color-accent-on-weak, #99161D);
}
html[data-theme="light"] body[data-page="blog-article"] .article-body code {
  background: rgba(0, 0, 0, 0.06);
  color: #2a2a30;
}

/* Comparison-table — light */
html[data-theme="light"] body[data-page="blog-article"] .article-compare {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.10);
}
html[data-theme="light"] body[data-page="blog-article"] .article-compare th,
html[data-theme="light"] body[data-page="blog-article"] .article-compare td {
  border-bottom-color: rgba(0, 0, 0, 0.06);
}
html[data-theme="light"] body[data-page="blog-article"] .article-compare th {
  color: var(--color-text-muted);
  background: rgba(0, 0, 0, 0.02);
}
html[data-theme="light"] body[data-page="blog-article"] .article-compare th:first-child,
html[data-theme="light"] body[data-page="blog-article"] .article-compare td:first-child,
html[data-theme="light"] body[data-page="blog-article"] .article-compare__num {
  color: var(--color-text);
}
html[data-theme="light"] body[data-page="blog-article"] .article-compare td {
  color: var(--color-text-soft);
}

/* Blockquote — light */
html[data-theme="light"] body[data-page="blog-article"] .article-body blockquote {
  background: rgba(184, 37, 47, 0.04);
  border-left-color: var(--color-accent-on-weak, #99161D);
  color: var(--color-text-soft);
}
html[data-theme="light"] body[data-page="blog-article"] .article-body blockquote cite {
  color: var(--color-text-muted);
}

/* Callouts — light */
html[data-theme="light"] body[data-page="blog-article"] .article-callout--info {
  background: rgba(40, 95, 200, 0.06);
  border-color: rgba(40, 95, 200, 0.22);
  color: var(--color-text-soft);
}
html[data-theme="light"] body[data-page="blog-article"] .article-callout--info .article-callout__label {
  color: var(--color-info-on-weak, #1E3A8A);
}
html[data-theme="light"] body[data-page="blog-article"] .article-callout--warn {
  background: rgba(196, 138, 14, 0.08);
  border-color: rgba(196, 138, 14, 0.28);
  color: var(--color-warning-on-weak, #7C4A00);
}
html[data-theme="light"] body[data-page="blog-article"] .article-callout--warn .article-callout__label {
  color: var(--color-warning-on-weak, #7C4A00);
}
html[data-theme="light"] body[data-page="blog-article"] .article-callout--research {
  background: rgba(184, 37, 47, 0.05);
  border-color: rgba(184, 37, 47, 0.22);
  color: var(--color-text-soft);
}
html[data-theme="light"] body[data-page="blog-article"] .article-callout--research .article-callout__label {
  color: var(--color-accent-on-weak, #99161D);
}


/* ── Reduced-motion: drop card lift transition ───────────────────────── */
body[data-page="blog-hub"] .section {
  content-visibility: visible !important;
  contain-intrinsic-size: none !important;
}

@media (max-width: 1100px) {
  body[data-page="blog-hub"] #togo-feedback-fab,
  body[data-page="blog-article"] #togo-feedback-fab {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
  }
}

@media (max-width: 640px) {
  body[data-page="blog-hub"] .blog-hub-hero {
    padding: 24px 0 22px !important;
  }

  body[data-page="blog-hub"] .blog-hub-hero__inner {
    padding-inline: 16px !important;
  }

  body[data-page="blog-hub"] .blog-hub-hero__eyebrow {
    margin-bottom: 8px !important;
    font-size: 10.5px !important;
    letter-spacing: .16em !important;
  }

  body[data-page="blog-hub"] .blog-hub-hero__title {
    margin-bottom: 10px !important;
    font-size: clamp(34px, 9.2vw, 40px) !important;
    line-height: 1.06 !important;
    letter-spacing: 0 !important;
  }

  body[data-page="blog-hub"] .blog-hub-hero__lead {
    max-width: 34ch !important;
    font-size: 15.5px !important;
    line-height: 1.46 !important;
  }

  body[data-page="blog-hub"] .blog-hub-hero .print-button,
  body[data-page="blog-hub"] .blog-hub-hero [class*="print"] {
    display: none !important;
  }

  body[data-page="blog-hub"] .section {
    padding-block: 20px calc(var(--tgp-mn-height, 64px) + env(safe-area-inset-bottom, 0px) + 30px) !important;
  }

  body[data-page="blog-hub"] .section__head,
  body[data-page="blog-hub"] .cat-section-head {
    margin-bottom: 14px !important;
  }

  body[data-page="blog-hub"] .section__title,
  body[data-page="blog-hub"] .cat-section-head__title {
    font-size: clamp(30px, 9vw, 38px) !important;
    line-height: 1.06 !important;
  }

  body[data-page="blog-hub"] .blog-card__cover {
    min-height: 86px;
    aspect-ratio: 16 / 9;
  }

  body[data-page="blog-hub"] .blog-card__body {
    padding: 15px 15px 16px;
  }

  body[data-page="blog-hub"] .blog-card__title {
    font-size: 16px;
    line-height: 1.28;
  }

  body[data-page="blog-hub"] .blog-card__excerpt {
    font-size: 13.25px;
    line-height: 1.46;
    -webkit-line-clamp: 2;
  }

  body[data-page="blog-hub"] .blog-card__meta {
    font-size: 11.5px;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body[data-page="blog-hub"] .blog-card,
  body[data-page="blog-hub"] .blog-card:hover {
    transition: none;
    transform: none;
  }
  body[data-page="blog-article"] #togo-toc .togo-toc__link {
    transition: none;
  }
}