:root {
  --bg:           #F0EBE0;
  --text-primary: #1C1B18;
  --text-body:    #3A3830;
  --text-muted:   #888077;
  --surface:      #FAF7F2;
  --divider:      #D8D2C4;
  --gaming:    #3B82F6;
  --marketing: #F59E0B;
  --media:     #EF4444;
  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans:  'Inter', -apple-system, sans-serif;
  --font-mono:  'JetBrains Mono', 'Courier New', monospace;
  --card-max:  1120px;
  --body-w:    820px;
  --shadow-card:
    0 2px 6px   rgba(60,50,30,0.05),
    0 10px 32px rgba(60,50,30,0.08),
    0 32px 80px rgba(60,50,30,0.06);
  --shadow-chart:
    0 4px 14px  rgba(60,50,30,0.06),
    0 18px 52px rgba(60,50,30,0.09);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.78;
  color: var(--text-body);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-attachment: fixed;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(28,27,24,0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28,27,24,0.055) 1px, transparent 1px);
  background-size: 60px 60px;
}

#scroll-gradient {
  position: fixed;
  inset: 0;
  z-index: -1; 

  pointer-events: none;

  background: linear-gradient(
    to bottom,
    #F0EBE0,
    #E6DDCF
  );

  transition: background 0.4s ease-out;
}

h1, h2, h3 { font-family: var(--font-serif); color: var(--text-primary); }
h2 {
  font-size: clamp(28px, 3.8vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  font-weight: 500;
}
h3 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
p { font-size: 18px; line-height: 1.78; color: var(--text-body); }
p + p { margin-top: 1rem; }
::selection { background: var(--text-primary); color: var(--bg); }

.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: var(--text-primary);
  width: 0%;
  z-index: 500;
  transition: width 0.08s linear;
}

.hero {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 2rem;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(
    ellipse 70% 55% at 50% 40%,
    rgba(255,252,245,0.7) 0%,
    rgba(255,252,245,0.15) 60%,
    transparent 100%
  );
}

.hero-bg-diagram {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
  width: 100%;
  padding: 6rem 0 8rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(64px, 11vw, 128px);
  line-height: 0.88;
  letter-spacing: -0.035em;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.hero-title em {
  font-style: italic;
  font-weight: 300;
  display: block;
  color: rgba(28,27,24,0.32);
}

.hero-sub {
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.9vw, 21px);
  font-weight: 300;
  font-style: italic;
  line-height: 1.5;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 2.5rem;
  letter-spacing: 0.01em;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.hero-cta:hover { color: var(--text-primary); }
.hero-cta svg { animation: arrowBounce 2.2s ease-in-out infinite; }

@keyframes arrowBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(3px); }
}

main { position: relative; z-index: 2; }

.chapter-rule {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--divider) 10%, var(--divider) 90%, transparent);
  margin: 0 auto;
  max-width: var(--card-max);
  position: relative;
  z-index: 2;
}

.chapter {
  position: relative;
  z-index: 2;
  padding: 64px 2rem 64px;
}

.chapter-card {
  position: relative;
  z-index: 2;
  max-width: var(--card-max);
  margin: 0 auto;
  background: var(--surface);
  border-radius: 8px;
  border: 0.5px solid rgba(60,50,30,0.07);
  padding: 56px 72px 60px;
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateY(72px);
  transition:
    opacity   0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform, opacity;
}

.chapter-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.body-col {
  max-width: var(--body-w);
  margin-top: 1.75rem;
}
.body-col p { margin-bottom: 1rem; }

.chapter-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
}

.viz-block { margin-top: 2rem; }

.viz-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 0.9rem;
}
.viz-controls label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}
.viz-controls select {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 12px;
  border: 0.5px solid var(--divider);
  border-radius: 3px;
  background: var(--bg);
  color: var(--text-primary);
  cursor: pointer;
  outline: none;
  min-width: 150px;
  transition: border-color 0.2s;
}
.viz-controls select:hover { border-color: var(--text-primary); }

/* Mobile scroll wrapper — the key fix.
   On desktop: invisible passthrough.
   On mobile: horizontal scroll container with drag hint. */
.mobile-scroll-wrapper {
  width: 100%;
  position: relative;
}

.chart-frame {
  background: var(--bg);
  border: 0.5px solid var(--divider);
  border-radius: 4px;
  padding: 1.25rem;
  min-height: 280px;
  overflow: hidden;
  box-shadow: var(--shadow-chart);
}

.viz-caption {
  display: block;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 0.75rem;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 2rem;
}
.industry-card {
  background: var(--bg);
  border: 0.5px solid var(--divider);
  border-radius: 4px;
  padding: 1.25rem;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.industry-card:hover { transform: translateY(-4px); }
.ind-bar {
  display: block;
  width: 24px;
  height: 2.5px;
  border-radius: 2px;
  margin-bottom: 0.9rem;
}
.gaming-bar    { background: var(--gaming);    }
.marketing-bar { background: var(--marketing); }
.media-bar     { background: var(--media);     }
.industry-card h3 { font-size: 15px; margin-bottom: 0.5rem; }
.industry-card p  { font-size: 13px; line-height: 1.6; color: var(--text-body); margin: 0; }

.stat-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 1.75rem;
}
.stat {
  background: var(--bg);
  border: 0.5px solid var(--divider);
  border-radius: 4px;
  padding: 0.9rem 1.1rem;
  min-width: 120px;
}
.stat-accent { border-left: 3px solid var(--text-primary); }
.stat-val {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.2;
}
.stat-lab {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-top: 3px;
}

.findings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 2rem;
}
.finding {
  background: var(--bg);
  border: 0.5px solid var(--divider);
  border-radius: 4px;
  padding: 1rem 1.1rem;
}
.finding-n {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}
.finding p { font-size: 14px; line-height: 1.6; margin: 0; }

.site-footer {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 0.5px solid var(--divider);
}
.site-footer p {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  line-height: 2.2;
}
.site-footer a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}
.site-footer a:hover { color: var(--text-primary); }

#vg-tooltip-element {
  font-family: var(--font-sans) !important;
  background: var(--surface) !important;
  border: 0.5px solid var(--divider) !important;
  border-radius: 3px !important;
  color: var(--text-primary) !important;
  font-size: 12px !important;
  box-shadow: 0 8px 28px rgba(60,50,30,0.14) !important;
  padding: 10px 14px !important;
}
#vg-tooltip-element td.key   { color: var(--text-muted) !important; padding-right: 12px !important; }
#vg-tooltip-element td.value { color: var(--text-primary) !important; font-weight: 500 !important; }

@media (prefers-reduced-motion: reduce) {
  .chapter-card { opacity: 1 !important; transform: none !important; transition: none !important; }
  .hero-cta svg { animation: none !important; }
  #scroll-gradient { transition: none !important; }
  html { scroll-behavior: auto; }
}

@media (max-width: 900px) {
  .chapter-card { padding: 40px 36px 44px; }
  .findings-grid { grid-template-columns: 1fr 1fr; }
  .industry-grid { grid-template-columns: 1fr; }
}

/* Mobile 
   chart-frame keeps overflow:hidden so Vega renders correctly.
   mobile-scroll-wrapper becomes the scrollable element.
   User swipes left/right inside the wrapper to see the full chart. */
@media (max-width: 700px) {
  .chapter { padding: 40px 1rem 40px; }
  .chapter-card { padding: 28px 20px 32px; }
  .hero-title { font-size: clamp(52px, 15vw, 80px); }
  p { font-size: 16px; }
  .findings-grid { grid-template-columns: 1fr; }

  .mobile-scroll-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 4px;
  }

  .mobile-scroll-wrapper .chart-frame {
    min-width: 560px;
    overflow: visible;
  }

  .mobile-scroll-wrapper::before {
    content: '← swipe to see full chart →';
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--text-muted);
    text-align: center;
    letter-spacing: 0.08em;
    padding: 0 0 6px;
    opacity: 0.7;
  }
}