/* ================================================================
   theme.css — Peptidegenics (Site 3)
   Diet & Metabolism — Sports science publication register
   Brandbook ref: docs/brandbook.md — Site 3
   Colors: Deep graphite #1C1C2E primary, Crimson #D62839 accent
   Fonts: Space Grotesk (headings), DM Sans (body), DM Mono (data)
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;1,9..40,400&family=DM+Mono:wght@400&display=swap');

:root {
  /* Colors */
  --color-bg:            #F4F4F6;
  --color-surface:       #FFFFFF;
  --color-primary:       #1C1C2E;
  --color-accent:        #D62839;
  --color-accent-light:  #FDEDEF;
  --color-text:          #2E2E3A;
  --color-text-body:     #2E2E3A;
  --color-text-muted:    #6B6B80;
  --color-muted:         #6B6B80;
  --color-border:        #DDDDE8;
  --color-primary-light: #EEEEF4;
  --color-data:          #F0A500;
  --color-badge-bg:      #FDEDEF;
  --color-badge-text:    #D62839;

  /* Typography */
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'DM Sans', system-ui, sans-serif;
  --font-meta:    'DM Sans', system-ui, sans-serif;
  --font-mono:    'DM Mono', monospace;

  /* Answer capsule */
  --answer-capsule-border-color: #D62839;
  --answer-capsule-bg:           #FDEDEF;

  /* Prose */
  --prose-max-width: 740px;
}

/* ── Category badges — square-radius, graphite style ─────────── */
.badge {
  border-radius: 4px;
  font-family:   var(--font-meta);
  font-size:     0.75rem;
  font-weight:   500;
  padding:       3px 10px;
  letter-spacing: 0.01em;
  display: inline-block;
  white-space: nowrap;
}

.badge--category {
  background: var(--color-primary);
  color:      #FFFFFF;
}

/* ── Metabolic Applicability Rating badge variants ────────────── */
/* Brandbook ref: docs/brandbook.md — Site 3, unique trust badge */
.badge--direct {
  background: #FDEDEF;
  color:      #D62839;
  border: 1px solid #D62839;
}

.badge--context-dep {
  background: #FFF6E0;
  color:      #B87A00;
  border: 1px solid #F0A500;
}

.badge--extrapolated {
  background: #EEEEF4;
  color:      #4A4A6A;
  border: 1px solid #DDDDE8;
}

.badge--mechanistic {
  background: #F4F4F6;
  color:      #6B6B80;
  border: 1px solid #DDDDE8;
}

.badge--conflicting {
  background: #FFF0D0;
  color:      #9A6200;
  border: 1px solid #E0A000;
}

/* ── Metabolic context tags ───────────────────────────────────── */
.metabolic-tag {
  border:        1px solid #D62839;
  color:         #D62839;
  background:    transparent;
  border-radius: 3px;
  font-size:     0.78rem;
  padding:       2px 7px;
  font-family:   var(--font-meta);
  display: inline-block;
  margin: 0 4px 4px 0;
}

/* ── Data point callout — homepage full-width graphite band ───── */
.data-callout {
  background:  var(--color-primary);
  color:       #FFFFFF;
  padding:     3rem 2.5rem;
  text-align:  center;
}

.data-callout__inner {
  max-width: 740px;
  margin:    0 auto;
}

.data-callout__stat {
  font-family:  var(--font-heading);
  font-size:    4rem;
  font-weight:  700;
  color:        var(--color-accent);
  line-height:  1;
  margin-bottom: 0.5rem;
}

.data-callout__label {
  font-family:  var(--font-body);
  font-size:    1.05rem;
  color:        rgba(255, 255, 255, 0.85);
  margin-top:   0.5rem;
  line-height:  1.5;
}

.data-callout__source {
  font-family:  var(--font-meta);
  font-size:    0.8rem;
  color:        rgba(255, 255, 255, 0.5);
  margin-top:   0.75rem;
  font-style:   italic;
}

/* ── Metabolic context panels — homepage 2x2 grid ─────────────── */
.context-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 768px) {
  .context-panels { grid-template-columns: 1fr; }
}

.context-panel {
  border-left:   4px solid var(--color-accent);
  background:    var(--color-surface);
  padding:       1.25rem 1.5rem;
  border-radius: 0 6px 6px 0;
  border: 1px solid var(--color-border);
  border-left:   4px solid var(--color-accent);
  text-decoration: none;
  display: block;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.context-panel:hover {
  box-shadow: 0 2px 8px rgba(214, 40, 57, 0.15);
  text-decoration: none;
}

.context-panel__heading {
  font-family:  var(--font-heading);
  font-size:    1rem;
  font-weight:  600;
  color:        var(--color-primary);
  margin-bottom: 0.4rem;
}

.context-panel__desc {
  font-family:  var(--font-body);
  font-size:    0.875rem;
  color:        var(--color-muted);
  line-height:  1.55;
  margin-bottom: 0.6rem;
}

.context-panel__count {
  font-family:  var(--font-heading);
  font-size:    1.35rem;
  font-weight:  700;
  color:        var(--color-accent);
}

/* ── Metabolism browse page — context cards ───────────────────── */
.context-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.context-card {
  background:    var(--color-surface);
  border:        1px solid var(--color-border);
  border-left:   3px solid var(--color-accent);
  border-radius: 0 6px 6px 0;
  padding:       1.25rem 1.5rem;
  text-decoration: none;
  display: block;
  transition: border-color 0.15s;
}

.context-card:hover {
  border-color: var(--color-accent);
  text-decoration: none;
}

.context-card__label {
  font-family:  var(--font-heading);
  font-size:    0.95rem;
  font-weight:  600;
  color:        var(--color-primary);
  margin-bottom: 0.35rem;
}

.context-card__desc {
  font-family:  var(--font-body);
  font-size:    0.82rem;
  color:        var(--color-muted);
  line-height:  1.5;
  margin-bottom: 0.5rem;
}

.context-card__count {
  font-family:  var(--font-heading);
  font-size:    1.1rem;
  font-weight:  700;
  color:        var(--color-accent);
}

/* ── Metabolic Context Table (in post body) ───────────────────── */
.metabolic-table {
  border-collapse: collapse;
  width:           100%;
  margin:          1.5rem 0;
  font-family:     var(--font-body);
  font-size:       0.9rem;
}

.metabolic-table th {
  background:     var(--color-primary);
  color:          #FFFFFF;
  font-family:    var(--font-heading);
  font-weight:    600;
  font-size:      0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding:        0.6rem 1rem;
  text-align:     left;
}

.metabolic-table td {
  padding:        0.65rem 1rem;
  border-bottom:  1px solid var(--color-border);
  vertical-align: top;
}

.metabolic-table td:first-child {
  font-weight: 500;
  color:       var(--color-primary);
  width:       38%;
}

/* ── Inline numeric data ──────────────────────────────────────── */
.data-value {
  font-family:           var(--font-mono);
  font-variant-numeric:  tabular-nums;
  color:                 var(--color-primary);
  background:            var(--color-primary-light);
  padding:               1px 4px;
  border-radius:         2px;
  font-size:             0.95em;
}

/* ── Sources rule — thin crimson rule above sources ───────────── */
.sources-rule {
  border:      none;
  border-top:  2px solid var(--color-accent);
  width:       3rem;
  margin:      2rem 0 1rem;
}

/* ── Nav logo monogram ────────────────────────────────────────── */
.site-header__logo-mono {
  font-size:      1.15rem;
  font-weight:    700;
  letter-spacing: -0.04em;
  position:       relative;
}

.site-header__logo-mono::after {
  content:    '';
  display:    block;
  height:     2px;
  background: var(--color-accent);
  margin-top: 1px;
}

/* ── Breadcrumb ───────────────────────────────────────────────── */
.breadcrumb {
  font-family:  var(--font-meta);
  font-size:    0.8rem;
  color:        var(--color-muted);
  margin-bottom: 1.5rem;
}

.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
}

.breadcrumb a:hover { color: var(--color-accent); }

.breadcrumb__sep { margin: 0 0.4em; }