/* ═══════════════════════════════════════════════════════
   IN-KluSo Design System v2.0 — April 2026
   Single source of truth for all pages.
   ═══════════════════════════════════════════════════════ */

:root {
  /* Core palette */
  --cream: #FAF6EE;
  --black: #111;
  --surface: #131313;
  --surface2: #1a1a1a;
  --border: #1f1f1f;
  --border2: #2a2a2a;

  /* Brand */
  --orange-logo: #f27d23;
  --orange: #E8602C;

  /* Divisions */
  --thrive: #F37D24;
  --pulse: #4DAACB;
  --ground: #AFD274;
  --flow: #D54D9B;
  --axis: #FCB912;
  --core: #4D4D4D;

  /* Text */
  --dim: #666;
  --warm-gray: #8A8578;
  --light: #E8E4DC;

  /* Scoring */
  --high: #2E9B6F;
  --moderate: #C9A84C;
  --low: #C94C4C;
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* ─── Typography ─── */
.font-headline, h1, h2 { font-family: 'IBM Plex Sans', sans-serif; }
.font-body, p, li, blockquote { font-family: 'IBM Plex Serif', serif; }
.font-ui, nav, button, .btn, label, input { font-family: 'IBM Plex Sans', sans-serif; }
.font-data, code, .badge, .tag, .sci-badge, .article-id { font-family: 'IBM Plex Mono', monospace; }

body {
  background: var(--black);
  color: var(--cream);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Light mode (article pages) */
body.light {
  background: var(--cream);
  color: var(--black);
}

/* ═══ IN-KluSo Light Mode — Variable Overrides ═══ */
html.light-mode {
  --cream: #111111;
  --black: #FAF6EE;
  --surface: #FFFFFF;
  --surface2: #F5F1E8;
  --border: #E8E4DC;
  --border2: #D4CFC6;
  --dim: #6B6560;
  --warm-gray: #8A8578;
  --light: #3D3830;
  --high: #1F7A54;
}
html.light-mode body {
  background: #FAF6EE;
  color: #111;
}
html.light-mode .nav,
html.light-mode .unified-nav {
  background: rgba(250, 246, 238, 0.92);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}
html.light-mode .section-bar,
html.light-mode .unified-section-bar {
  background: #FFFFFF;
  border-bottom-color: var(--border);
}
html.light-mode .ticker-wrap {
  background: var(--surface2);
  border-bottom-color: var(--border);
}
html.light-mode .ticker-item { color: #6B6560; }
html.light-mode .ticker-item:hover { color: #111; }
html.light-mode .kpi-card {
  background: #FFFFFF;
  border-color: var(--border);
}
html.light-mode .filter-pill {
  border-color: var(--border2);
  color: var(--dim);
}
html.light-mode .filter-pill:hover { color: #111; border-color: #999; }
html.light-mode .filter-pill.active { color: #FAF6EE; }
html.light-mode .filter-pill[data-s="all"].active { background: #111; color: #FAF6EE; }
html.light-mode .g-cell.g-crumb { background: var(--surface2); border-color: var(--border); }
html.light-mode .g-cell.c-mixed { background: var(--surface); border-color: var(--border); }
html.light-mode .list-view .l-card,
html.light-mode .list-view .l-card-new {
  background: #FFFFFF;
  border-color: var(--border);
}
html.light-mode .list-view .l-card:hover,
html.light-mode .list-view .l-card-new:hover { border-color: #D4CFC6; }
html.light-mode .bands-view .b-band { border-bottom-color: var(--border); }
html.light-mode .bands-view .b-num { color: rgba(0, 0, 0, 0.15); }
html.light-mode .stack-card { background: #FFFFFF; border-color: var(--border); }
html.light-mode .stack-card:hover { border-color: #D4CFC6; }
html.light-mode .stack-card-title { color: #111; }
html.light-mode .crumbs-section { border-top-color: var(--border); }
html.light-mode .crumb-row { border-bottom-color: var(--border); }
html.light-mode .cta-section {
  background: linear-gradient(135deg, #F5F1E8, #FAF6EE, #FFFFFF);
  border-top-color: var(--border);
}
html.light-mode .cta-btn-ghost { border-color: #D4CFC6; color: #111; }
html.light-mode .cta-btn-ghost:hover { border-color: #999; background: rgba(0, 0, 0, 0.03); }
html.light-mode .footer { background: #FFFFFF; border-top-color: var(--border); }
html.light-mode .footer-grid { border-bottom-color: var(--border); }
html.light-mode .explore-overlay { background: rgba(17, 17, 17, 0.4); }
html.light-mode .explore-modal { background: #FFFFFF; border-color: var(--border); }
html.light-mode .explore-search-input { color: #111; }
html.light-mode .klu-modal { background: #FFFFFF; border-color: var(--border); }
html.light-mode .klu-modal-title { color: #111; }
html.light-mode .article-body p { color: #222; }
html.light-mode .article-body .pull-quote { color: #111; border-top-color: var(--border); border-bottom-color: var(--border); }
html.light-mode .article-fade::after { background: linear-gradient(transparent, #FAF6EE); }
html.light-mode .section-card { background: #FFFFFF; border-color: var(--border); }
html.light-mode .section-card:hover { border-color: #D4CFC6; }
html.light-mode .section-search-input { background: #FFFFFF; border-color: var(--border); color: #111; }
html.light-mode .nav-search-input,
html.light-mode .unified-nav-search-input { background: #FFFFFF; border-color: var(--border); color: #111; }
html.light-mode .nav-search-input::placeholder,
html.light-mode .unified-nav-search-input::placeholder { color: #999; }
html.light-mode .af-card { background: #FFFFFF; border-color: var(--border); }
html.light-mode .af-card:hover { border-color: #D4CFC6; }
html.light-mode .sci-high { background: var(--high); color: white; }
html.light-mode .nav-logo { color: #111; }

/* ─── Light mode: all text black ─── */
html.light-mode h1, html.light-mode h2, html.light-mode h3,
html.light-mode h4, html.light-mode h5, html.light-mode h6,
html.light-mode p, html.light-mode span, html.light-mode a,
html.light-mode li, html.light-mode td, html.light-mode th,
html.light-mode label, html.light-mode .g-card-title,
html.light-mode .g-card-city, html.light-mode .g-card-deck,
html.light-mode .l-card-title, html.light-mode .l-card-city,
html.light-mode .b-title, html.light-mode .b-city,
html.light-mode .mt-text, html.light-mode .mt-sub,
html.light-mode .kpi-val, html.light-mode .kpi-label,
html.light-mode .footer-col a, html.light-mode .footer-copy,
html.light-mode .f-desc { color: #111; }
html.light-mode .g-card-deck,
html.light-mode .l-card-deck,
html.light-mode .b-deck { color: #333; }

/* ─── Light mode: CORE cards gris claro ─── */
html.light-mode .g-cell.c-core,
html.light-mode .g-card.c-core .g-card-body { background: #E8E4DC; color: #111; }
html.light-mode .g-cell.c-core .g-card-title,
html.light-mode .g-cell.c-core .g-card-city,
html.light-mode .g-cell.c-core .g-card-deck,
html.light-mode .g-card.c-core .g-card-title { color: #111; }
html.light-mode .g-card-img.filter-core::after { background: linear-gradient(to top, rgba(232,228,220,1) 0%, rgba(232,228,220,0) 50%); }

/* ─── Light mode: ALL card body text black ─── */
html.light-mode .g-card-body,
html.light-mode .g-card.c-pulse .g-card-body,
html.light-mode .g-card.c-flow .g-card-body,
html.light-mode .g-card.c-axis .g-card-body,
html.light-mode .g-card.c-thrive .g-card-body,
html.light-mode .g-card.c-ground .g-card-body,
html.light-mode .g-card.c-core .g-card-body,
html.light-mode .g-card.c-mixed .g-card-body { color: #111 !important; }
html.light-mode .g-card-title,
html.light-mode .g-card-city,
html.light-mode .g-card-deck { color: #111 !important; }
html.light-mode .l-card-title,
html.light-mode .l-card-city,
html.light-mode .l-card-deck { color: #111 !important; }
html.light-mode .b-title,
html.light-mode .b-city,
html.light-mode .b-deck { color: #111 !important; }

/* ─── Light mode: newsletter + CTA ─── */
html.light-mode .newsletter-band { background: #FFFFFF; border-color: var(--border); }
html.light-mode .newsletter-title { color: #111; }
html.light-mode .newsletter-sub { color: #333; }
html.light-mode .newsletter-email { background: #FFFFFF; border-color: var(--border); color: #111; }
html.light-mode .newsletter-email::placeholder { color: #999; }
html.light-mode .newsletter-btn { background: var(--orange-logo); color: #fff; }
html.light-mode .cta-headline, html.light-mode .cta-sub { color: #111; }

/* ─── Light mode: footer details ─── */
html.light-mode .footer-copy { color: #555; }
html.light-mode .footer-col ul li a { color: #555; }
html.light-mode .footer-col ul li a:hover { color: #111; }
html.light-mode .footer-social { color: #555; border-color: var(--border); }
html.light-mode .footer-social:hover { color: #111; }

/* ─── Light mode: search focus states ─── */
html.light-mode .nav-search-input:focus { border-color: #999; }
html.light-mode .sb-auth-btn:hover { border-color: #999; }
html.light-mode .ticker-item:hover { color: #333; }

/* ─── Light mode: card image gradients per division ─── */
html.light-mode .g-card-img.filter-thrive::after { background: linear-gradient(to top, rgba(243,125,36,0.15) 0%, transparent 50%); }
html.light-mode .g-card-img.filter-pulse::after { background: linear-gradient(to top, rgba(77,170,203,0.15) 0%, transparent 50%); }
html.light-mode .g-card-img.filter-ground::after { background: linear-gradient(to top, rgba(175,210,116,0.15) 0%, transparent 50%); }
html.light-mode .g-card-img.filter-flow::after { background: linear-gradient(to top, rgba(213,77,155,0.15) 0%, transparent 50%); }
html.light-mode .g-card-img.filter-axis::after { background: linear-gradient(to top, rgba(252,185,18,0.15) 0%, transparent 50%); }

/* ─── Light mode: paywall + modals ─── */
html.light-mode .paywall-overlay { background: rgba(250,246,238,0.95); }
html.light-mode .paywall-title, html.light-mode .paywall-desc { color: #111; }
html.light-mode .paywall-btn { border-color: var(--border2); color: #111; }

/* ─── Light mode: scroll gate ─── */
html.light-mode .scroll-gate { border-color: var(--border); }
html.light-mode .scroll-gate:hover { background: var(--surface2); }
html.light-mode .scroll-gate-text { color: #555; }
html.light-mode .scroll-gate:hover .scroll-gate-text { color: #111; }

/* ─── Light mode: audio player ─── */
html.light-mode .article-audio { background: #FFFFFF; border-color: var(--border); }
html.light-mode .audio-title { color: #111; }

/* ─── Reading Progress Bar ─── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  z-index: 200;
  transition: width 0.1s linear;
}
.reading-progress.rp-thrive { background: var(--thrive); }
.reading-progress.rp-pulse { background: var(--pulse); }
.reading-progress.rp-ground { background: var(--ground); }
.reading-progress.rp-flow { background: var(--flow); }
.reading-progress.rp-axis { background: var(--axis); }
.reading-progress.rp-core { background: var(--core); }

/* ─── Shared Nav (dual bar from CORE prototype) ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(17,17,17,0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
}
.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 52px;
  gap: 12px;
}
.nav-logo { flex: 0 1 auto; min-width: 80px; max-width: 220px; }
.nav-logo svg { height: 38px; width: auto; display: block; }

/* Section bar */
.section-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  position: sticky;
  top: 52px;
  z-index: 99;
}
.section-bar-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 40px;
}
.sb-sections {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.sb-sections::-webkit-scrollbar { display: none; }
.sb-item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 14px;
  height: 40px;
  cursor: pointer;
  transition: all 0.15s;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  text-decoration: none;
  color: inherit;
}
.sb-item:hover { background: var(--surface2); }
.sb-item.active { border-bottom-color: var(--cream); }
.sb-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.sb-name {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dim);
  transition: color 0.15s;
}
.sb-item:hover .sb-name, .sb-item.active .sb-name { color: var(--cream); }

.sb-auth-btn {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.15s;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--dim);
  text-decoration: none;
}
.sb-auth-btn:hover { color: var(--cream); border-color: #444; }
.sb-auth-btn.premium {
  background: var(--orange-logo);
  color: var(--black);
  border-color: var(--orange-logo);
  font-weight: 800;
}

/* ─── SCI Badges ─── */
.sci-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 3px;
  letter-spacing: 1px;
  font-weight: 600;
}
.sci-high { background: var(--high); color: white; }
.sci-moderate { background: var(--moderate); color: var(--black); }
.sci-low { background: var(--low); color: white; }

/* ─── Section Pills ─── */
.section-pill {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 8px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 2px;
  color: white;
}
.pill-thrive { background: var(--thrive); }
.pill-pulse { background: var(--pulse); }
.pill-ground { background: var(--ground); color: var(--black); }
.pill-flow { background: var(--flow); }
.pill-axis { background: var(--axis); color: var(--black); }
.pill-core { background: var(--core); }

/* ─── Tags ─── */
.tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  padding: 4px 12px;
  border-radius: 3px;
  letter-spacing: 0.5px;
}
body.light .tag { background: #f0ede6; color: var(--warm-gray); }
body:not(.light) .tag { background: var(--surface); color: var(--dim); border: 1px solid var(--border); }

/* ─── Article Page Styles (light mode) ─── */
.article-header { padding: 60px 40px 40px; max-width: 780px; margin: 0 auto; }
.article-body { max-width: 780px; margin: 0 auto; padding: 0 40px 60px; }
.article-body h2 { font-size: 28px; color: var(--black); margin: 48px 0 20px; }
.article-body h3 { font-family: 'IBM Plex Sans', sans-serif; font-size: 16px; font-weight: 700; margin: 36px 0 12px; }
.article-body p { font-size: 17px; margin-bottom: 20px; color: #222; line-height: 1.75; }
.article-body blockquote {
  border-left: 3px solid var(--orange);
  padding: 12px 20px;
  margin: 30px 0;
  font-family: 'IBM Plex Sans', sans-serif;
  font-style: italic;
  font-size: 20px;
  color: #444;
  line-height: 1.5;
}

/* ─── Signal Intel Box ─── */
.signal-intel-box {
  border-left: 4px solid;
  padding: 16px 20px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13px;
  color: var(--warm-gray);
  line-height: 1.6;
  font-style: italic;
}

/* ─── CTA Section ─── */
.cta {
  background: var(--black);
  color: var(--cream);
  text-align: center;
  padding: 60px 40px;
}
.cta h2 { font-size: 32px; margin-bottom: 12px; }
.cta p { font-size: 15px; color: var(--warm-gray); margin-bottom: 24px; }
.cta a {
  display: inline-block;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 32px;
  text-decoration: none;
  border-radius: 4px;
}

/* ─── Footer ─── */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 24px 28px;
  text-align: center;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 12px;
  color: var(--warm-gray);
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .nav { padding: 0 16px; }
  .section-bar { padding: 0 16px; }
  .article-header, .article-body { padding-left: 20px; padding-right: 20px; }
  .sb-item { padding: 0 10px; }
}
/* ═══ FORMAT IDENTITY BADGES ═══ */
.format-eyebrow{font-family:'IBM Plex Mono',monospace;font-size:9px;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:2px;}
.format-commitment{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:1px;text-transform:uppercase;opacity:0.7;}

/* Stacks — neutral cream, reading list */
.format-stacks{padding:12px 16px;border-radius:6px;background:rgba(250,246,238,0.04);border:1px solid rgba(250,246,238,0.08);}
.format-stacks .format-eyebrow{color:var(--cream, #FAF6EE);opacity:0.6;}
.format-stacks .format-commitment{color:var(--cream, #FAF6EE);opacity:0.4;}
html.light-mode .format-stacks{background:rgba(0,0,0,0.02);border-color:rgba(0,0,0,0.06);}
html.light-mode .format-stacks .format-eyebrow{color:#333;}
html.light-mode .format-stacks .format-commitment{color:#555;}

/* Crumbs — green tint, brief snack */
.format-crumbs{padding:12px 16px;border-radius:6px;background:rgba(175,210,116,0.06);border:1px solid rgba(175,210,116,0.12);}
.format-crumbs .format-eyebrow{color:var(--ground, #AFD274);}
.format-crumbs .format-commitment{color:var(--ground, #AFD274);opacity:0.6;}
html.light-mode .format-crumbs{background:rgba(74,122,26,0.04);border-color:rgba(74,122,26,0.1);}
html.light-mode .format-crumbs .format-eyebrow{color:#4A7A1A;}
html.light-mode .format-crumbs .format-commitment{color:#4A7A1A;}

/* Core — orange/amber, deep synthesis */
.format-core{padding:12px 16px;border-radius:6px;background:rgba(242,125,35,0.06);border:1px solid rgba(242,125,35,0.12);}
.format-core .format-eyebrow{color:var(--orange-logo, #f27d23);}
.format-core .format-commitment{color:var(--orange-logo, #f27d23);opacity:0.6;}
html.light-mode .format-core{background:rgba(242,125,35,0.04);border-color:rgba(242,125,35,0.1);}
html.light-mode .format-core .format-eyebrow{color:#C45A0A;}
html.light-mode .format-core .format-commitment{color:#C45A0A;}

@media (max-width: 600px) {
  h1 { font-size: 30px; }
  .article-body p { font-size: 16px; }
  .nav-inner { gap: 8px; }
}