/* ==========================================================================
   reidEXA — exa.css
   Styles for the EXA framework overview page (exa.html).

   Sections:
     1. Breadcrumb
     2. EXA hero
     3. Manifesto + pull-quote
     4. Overview infographic
     5. Enterprise Impact grid
     6. Three Pillars grid
     7. EXA CTA
     8. Back to homepage
     9. Section utilities (label, title, intro)
    10. Mobile (≤900px)
    11. Reduced motion
   ========================================================================== */


/* ==========================================================================
   1. Breadcrumb — runs above the hero on Midnight
   ========================================================================== */

.breadcrumb {
  padding: 20px 0 0;
  background: var(--midnight);
}
.breadcrumb-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--slate-light);
}
.breadcrumb-inner a {
  color: var(--slate-light);
  transition: color var(--dur-base) var(--ease-out);
}
.breadcrumb-inner a:hover { color: var(--white); }
.breadcrumb-sep { color: var(--slate); }
.breadcrumb-current {
  color: var(--electric);
  text-transform: uppercase;
}


/* ==========================================================================
   2. EXA hero — distinctive treatment with oversized "EXA" mark behind
   ========================================================================== */

.exa-hero {
  position: relative;
  overflow: hidden;
  padding: 80px 0 120px;
  background:
    radial-gradient(1000px 680px at 12% 0%,
      hsl(var(--electric-hsl) / 0.10), transparent 60%),
    radial-gradient(900px 620px at 100% 100%,
      hsl(var(--midnight-3-hsl) / 0.82), transparent 55%),
    var(--midnight);
}
.exa-hero::before {
  content: 'EXA';
  position: absolute;
  bottom: -140px;
  right: -60px;
  font-family: var(--display);
  font-size: 560px;
  font-weight: 700;
  line-height: 0.8;
  letter-spacing: -0.06em;
  color: hsl(var(--electric-hsl) / 0.06);
  pointer-events: none;
}
.exa-hero-inner {
  position: relative;
  max-width: 840px;
}
.exa-hero-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--electric);
}
.exa-hero-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--electric);
}
.exa-hero-title {
  margin-bottom: 24px;
  font-family: var(--display);
  font-size: 64px;
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--white);
}
.exa-hero-title em {
  font-style: normal;
  font-weight: 700;
  color: var(--electric);
}
.exa-hero-deck {
  max-width: 720px;
  margin-bottom: 44px;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -0.015em;
  color: var(--slate-dim);
}
.exa-hero-deck em {
  font-style: normal;
  font-weight: 600;
  color: var(--white);
}


/* ==========================================================================
   3. Manifesto — long-form narrative with pull-quote treatment
   ========================================================================== */

.manifesto {
  padding: 100px 0;
  border-bottom: 1px solid var(--cloud);
}
.manifesto-inner { max-width: 760px; }
.manifesto-prose {
  margin-top: 40px;
  font-size: 17px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--midnight);
}
.manifesto-prose p { margin-bottom: 24px; }
.manifesto-prose p.lead {
  margin-bottom: 36px;
  font-family: var(--display);
  font-size: 26px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--midnight);
}
.manifesto-prose strong {
  font-weight: 500;
  color: var(--midnight);
}

.pull-quote {
  max-width: 720px;
  margin: 40px 0;
  padding: 36px 32px 36px 28px;
  background: linear-gradient(
    180deg,
    hsl(var(--paper-hsl) / 0.0) 0%,
    hsl(var(--paper-hsl) / 0.6) 100%
  );
  border-left: 2px solid var(--electric);
  border-radius: var(--r-md);
  box-shadow: var(--bevel-dark);
  font-family: var(--display);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.025em;
  color: var(--midnight);
}
.pull-quote em {
  font-style: normal;
  font-weight: 700;
  color: var(--electric);
}


/* ==========================================================================
   4. Overview infographic — visual table of contents for the framework
   ========================================================================== */

.overview-visual {
  position: relative;
  overflow: hidden;
  padding: 80px 0;
  background: var(--midnight);
  border-top: 1px solid var(--midnight-4);
  border-bottom: 1px solid var(--midnight-4);
}
.overview-visual-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}
.overview-visual-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--electric);
}
.overview-visual-label::before,
.overview-visual-label::after {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--electric);
}
.overview-visual-figure {
  margin: 0;
}
.overview-visual-figure picture {
  display: block;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid hsl(var(--midnight-4-hsl) / 0.5);
  border-radius: 12px;
  box-shadow: var(--elev-4), var(--bevel-light);
}
.overview-visual-figure img {
  display: block;
  width: 100%;
  height: auto;
  /* Preserve the source aspect ratio so the slot has the correct height
     before the image decodes — prevents layout shift even if the explicit
     width/height attributes are absent. */
  aspect-ratio: 1600 / 872;
}
.overview-visual-caption {
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate-dim);
}


/* ==========================================================================
   5. Enterprise Impact — four-card business value grid
   ========================================================================== */

.impact-section {
  padding: 100px 0;
  background:
    radial-gradient(800px 500px at 100% 0%,
      hsl(var(--electric-hsl) / 0.05), transparent 60%),
    radial-gradient(700px 460px at 0% 100%,
      hsl(var(--cloud-hsl) / 0.65), transparent 60%),
    var(--paper);
}
.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 40px;
}
.impact-card {
  padding: 36px 32px;
  background: var(--white);
  border-top: 2px solid var(--electric);
  border-radius: 10px;
  box-shadow: var(--elev-2), var(--bevel-dark);
  transition:
    box-shadow var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}
.impact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--elev-3), var(--bevel-dark);
}
.impact-num {
  margin-bottom: 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--electric);
}
.impact-title {
  margin-bottom: 12px;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--midnight);
}
.impact-desc {
  font-size: 15px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--slate);
}


/* ==========================================================================
   6. Three Pillars — three deep-dive card links to scale/intelligence/clarity
   ========================================================================== */

.pillars-section {
  padding: 120px 0;
  border-bottom: 1px solid var(--cloud);
}
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.pillar-card {
  position: relative;
  display: block;
  overflow: hidden;
  padding: 44px 36px 36px;
  background: var(--midnight);
  border-radius: 12px;
  box-shadow: var(--elev-3), var(--bevel-light);
  transition:
    background-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}
.pillar-card:hover {
  transform: translateY(-4px);
  background: var(--midnight-2);
  box-shadow: var(--elev-4), var(--bevel-light-strong);
}
.pillar-card::before {
  content: attr(data-num);
  position: absolute;
  top: -40px;
  right: -20px;
  font-family: var(--display);
  font-size: 220px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: hsl(var(--electric-hsl) / 0.08);
  pointer-events: none;
}
.pillar-card-num {
  position: relative;
  margin-bottom: 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--electric);
}
.pillar-card-title {
  position: relative;
  margin-bottom: 16px;
  font-family: var(--display);
  font-size: 32px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--white);
}
.pillar-card-desc {
  position: relative;
  margin-bottom: 28px;
  font-size: 14px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--slate-dim);
}
.pillar-card-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--electric);
  transition: gap var(--dur-base) var(--ease-out);
}
.pillar-card:hover .pillar-card-link { gap: 14px; }


/* ==========================================================================
   7. EXA CTA — "Bring EXA to your enterprise"
   ========================================================================== */

.exa-cta {
  padding: 100px 0;
  text-align: center;
  background:
    radial-gradient(900px 620px at 50% 0%,
      hsl(var(--electric-hsl) / 0.12), transparent 60%),
    radial-gradient(800px 500px at 50% 100%,
      hsl(var(--midnight-3-hsl) / 0.8), transparent 55%),
    var(--midnight);
}
.exa-cta-title {
  max-width: 680px;
  margin: 0 auto 20px;
  font-family: var(--display);
  font-size: 44px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.035em;
  color: var(--white);
}
.exa-cta-title em {
  font-style: normal;
  font-weight: 700;
  color: var(--electric);
}
.exa-cta-sub {
  max-width: 560px;
  margin: 0 auto 36px;
  font-size: 16px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--slate-dim);
}
.exa-cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}


/* ==========================================================================
   8. Back to homepage (reused from case study pattern)
   ========================================================================== */

.back-home {
  padding: 40px 0 60px;
  background: var(--midnight);
  border-top: 1px solid var(--midnight-4);
  text-align: center;
}
.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: transparent;
  color: var(--white);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid var(--slate);
  border-radius: 6px;
  transition: border-color var(--dur-base) var(--ease-out);
}
.back-home-link:hover { border-color: var(--white); }


/* ==========================================================================
   9. Section utilities — label, title, intro (mirrors pillar.css)
   Kept defensively in this stylesheet so exa.html is self-sufficient.
   If site.css already defines these, the rules cascade identically.
   ========================================================================== */

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--electric);
}
.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--electric);
}
.section-title-lg {
  max-width: 760px;
  margin-bottom: 20px;
  font-family: var(--display);
  font-size: 44px;
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--midnight);
}
.section-title-lg em {
  font-style: normal;
  font-weight: 500;
  color: var(--slate);
}
.section-intro-lg {
  max-width: 620px;
  font-size: 17px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--slate);
}



/* ==========================================================================
   Pillar card meta triad — discipline / governs / outcome
   ========================================================================== */

.pillar-card-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 0 24px;
  margin-top: 20px;
  border-top: 1px solid hsl(var(--midnight-4-hsl) / 0.6);
}

.pillar-card-meta-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.pillar-card-meta-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate);
  flex-shrink: 0;
}

.pillar-card-meta-value {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 400;
  color: var(--slate-dim);
  text-align: right;
}


/* ==========================================================================
   EXA Lexicon — flat definition card grid
   ========================================================================== */

.lexicon-section {
  padding: 120px 0;
  border-bottom: 1px solid var(--cloud);
  background:
    radial-gradient(900px 500px at 100% 0%,
      hsl(var(--electric-hsl) / 0.04), transparent 60%),
    radial-gradient(700px 460px at 0% 100%,
      hsl(var(--cloud-hsl) / 0.65), transparent 60%),
    var(--paper);
}

.lexicon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.lexicon-card {
  position: relative;
  padding: 28px 24px;
  background: var(--white);
  border-left: 2px solid var(--electric);
  border-radius: 8px;
  box-shadow: var(--elev-2), var(--bevel-dark);
  transition:
    box-shadow var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}

.lexicon-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--elev-3), var(--bevel-dark);
}

.lexicon-card--new {
  border-left-color: var(--electric);
  background: linear-gradient(
    160deg,
    hsl(var(--electric-hsl) / 0.04) 0%,
    var(--white) 50%
  );
}

.lexicon-card-badge {
  display: inline-flex;
  align-items: center;
  margin-bottom: 10px;
  padding: 3px 10px;
  background: hsl(var(--electric-hsl) / 0.10);
  border-radius: 20px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--electric);
}

.lexicon-term {
  display: block;
  margin-bottom: 12px;
  font-family: var(--display);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--midnight);
  font-style: normal;
}

.lexicon-abbr {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  background: var(--cloud);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--slate);
  vertical-align: middle;
}

.lexicon-def {
  font-size: 13px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--slate);
}

.lexicon-def em {
  font-style: normal;
  font-weight: 500;
  color: var(--midnight);
}


/* ==========================================================================
   Writing series headers and Series Two card states
   ========================================================================== */

.writing-series-header {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--cloud);
}

.writing-series-header--gap {
  margin-top: 56px;
}

.writing-series-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: var(--midnight);
  border-radius: 20px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--electric);
  flex-shrink: 0;
}

.writing-series-tag--new {
  background: hsl(var(--electric-hsl) / 0.12);
  color: var(--electric);
}

.writing-series-name {
  font-family: var(--display);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--midnight);
  flex: 1;
}

.writing-series-status {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate-light);
  flex-shrink: 0;
}

.writing-preview-grid--series2 {
  grid-template-columns: 1.4fr 1fr;
}

.writing-preview-card--featured {
  border-top-color: var(--electric);
}

.writing-preview-card--pending {
  opacity: 0.65;
  cursor: default;
}

.writing-preview-link--dim {
  color: var(--slate-light);
}


/* ==========================================================================
   10. Mobile — single consolidated breakpoint (≤900px)
   ========================================================================== */

@media (max-width: 900px) {
  /* Hero */
  .exa-hero        { padding: 60px 0 80px; }
  .exa-hero-title  { font-size: 42px; }
  .exa-hero-deck   { font-size: 18px; }
  .exa-hero::before {
    font-size: 360px;
    bottom: -90px;
    right: -40px;
  }

  /* Manifesto */
  .manifesto              { padding: 64px 0; }
  .manifesto-prose        { margin-top: 28px; }
  .manifesto-prose p.lead { font-size: 22px; }
  .pull-quote {
    margin: 32px 0;
    padding: 24px 20px;
    font-size: 22px;
  }

  /* Overview infographic */
  .overview-visual        { padding: 60px 0; }
  .overview-visual-label  { font-size: 10px; }

  /* Impact + Pillars + CTA grids/padding */
  .impact-section         { padding: 64px 0; }
  .impact-grid            { grid-template-columns: 1fr; }
  .impact-card            { padding: 28px 24px; }

  .pillars-section        { padding: 72px 0; }
  .pillars-grid           { grid-template-columns: 1fr; }
  .pillar-card            { padding: 36px 28px 28px; }
  .pillar-card-title      { font-size: 28px; }

  .exa-cta                { padding: 72px 0; }
  .exa-cta-title          { font-size: 32px; }

  .lexicon-section          { padding: 72px 0; }
  .lexicon-grid             { grid-template-columns: 1fr; }

  .writing-series-header    { flex-direction: column; align-items: flex-start; gap: 8px; }
  .writing-preview-grid--series2 { grid-template-columns: 1fr; }

  /* Pillar meta */
  .pillar-card-meta-item    { flex-direction: column; gap: 2px; align-items: flex-start; }
  .pillar-card-meta-value   { text-align: left; }

  /* Section utilities */
  .section-title-lg { font-size: 30px; }
}


/* ==========================================================================
   11. Reduced motion — disable transforms and shorten transitions
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .impact-card,
  .impact-card:hover,
  .pillar-card,
  .pillar-card:hover,
  .pillar-card-link,
  .pillar-card:hover .pillar-card-link,
  .lexicon-card,
  .lexicon-card:hover,
  .breadcrumb-inner a,
  .back-home-link {
    transform: none;
    transition-duration: 0.01ms;
  }
}