:root {
  --bg: #faf8f5;
  --card: #ffffff;
  --card-border: #e8e4dc;
  --text: #1a1a1a;
  --text-dim: #787570;
  --healthy: #4a7c59;
  --broken: #c4554d;
  --rc-1: #b5453a;
  --rc-2: #c4863b;
  --rc-3: #3a6b8c;
  --data: #5a5650;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans: 'Atkinson Hyperlegible', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  min-height: 100vh;
}

#report {
  max-width: 860px;
  margin: 0 auto;
  padding: 56px 24px 72px;
}

#masthead {
  text-align: center;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 56px;
}

#masthead h1 {
  font-family: var(--font-serif);
  font-size: clamp(40px, 7vw, 64px);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 8px;
}

.subtitle {
  font-size: 15px;
  color: var(--text-dim);
  font-family: var(--font-serif);
  font-style: italic;
}

.zone-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 12px;
}

/* Root cause cards */
#root-causes {
  margin-bottom: 48px;
}

#root-cause-cards {
  display: flex;
  gap: 16px;
}

.root-cause-card {
  flex: 1;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-left: 4px solid var(--card-border);
  padding: 24px;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
  position: relative;
}

.root-cause-card:hover {
  border-color: var(--text-dim);
}

.root-cause-card.active {
  border-left-width: 4px;
}

.root-cause-card[data-rc="monetary-debasement"] { border-left-color: var(--rc-1); }
.root-cause-card[data-rc="broken-price-signals"] { border-left-color: var(--rc-2); }
.root-cause-card[data-rc="financialization"] { border-left-color: var(--rc-3); }

.rc-label {
  font-family: var(--font-serif);
  font-size: 22px;
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0.01em;
  margin-bottom: 8px;
}

.rc-oneliner {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.4;
  margin-bottom: 12px;
}

.rc-stat {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--broken);
}

/* Arrow connector zone between root causes and primitives */
#rc-arrows {
  display: flex;
  gap: 16px;
  height: 24px;
  margin-top: 8px;
}

.arrow-down {
  flex: 1;
  position: relative;
}

.arrow-down::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--card-border);
  transition: background 0.2s;
}

.arrow-down.rc-1-active::after { background: var(--rc-1); }
.arrow-down.rc-2-active::after { background: var(--rc-2); }
.arrow-down.rc-3-active::after { background: var(--rc-3); }

/* Primitive flip cards */
#primitives {
  margin-bottom: 48px;
}

#primitive-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.flip-card {
  perspective: 800px;
  height: 200px;
  cursor: pointer;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.flip-card.flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 16px;
  display: flex;
  flex-direction: column;
  border-radius: 2px;
}

.flip-card-front {
  border-left: 3px solid var(--healthy);
}

.flip-card-back {
  border-left: 3px solid var(--broken);
  transform: rotateY(180deg);
}

.flip-label {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.flip-card-front .flip-label { color: var(--healthy); }
.flip-card-back .flip-label { color: var(--broken); }

.flip-text {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
  flex: 1;
}

.flip-stat {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--broken);
  line-height: 1.4;
  margin-top: 8px;
}

.flip-hint {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-dim);
  margin-top: 12px;
}

.flip-card.dimmed {
  opacity: 0.3;
  pointer-events: none;
  transition: opacity 0.3s;
}

.flip-card.highlighted .flip-card-front,
.flip-card.highlighted .flip-card-back {
  border-color: var(--broken);
  box-shadow: 0 0 0 2px var(--card-border);
}

/* Arrow zone between primitives and symptoms */
#primitive-arrows {
  height: 24px;
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
}

#primitive-arrows::after {
  content: "";
  width: 2px;
  height: 100%;
  background: var(--card-border);
}

/* Symptom pills */
#symptoms {
  margin-bottom: 48px;
}

#symptom-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.symptom-pill {
  font-family: var(--font-serif);
  font-size: 14px;
  font-style: italic;
  padding: 8px 18px;
  background: var(--card);
  border: 1px solid var(--card-border);
  cursor: pointer;
  color: var(--text-dim);
  transition: border-color 0.2s, color 0.2s;
  border-radius: 24px;
}

.symptom-pill:hover {
  border-color: var(--text-dim);
  color: var(--text);
}

.symptom-pill.active {
  border-color: var(--broken);
  color: var(--broken);
}

/* Footer */
#report-footer {
  border-top: 1px solid var(--card-border);
  padding-top: 32px;
  text-align: center;
  font-size: 12px;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-dim);
  line-height: 1.6;
}

/* Mobile */
@media (max-width: 700px) {
  #report { padding: 32px 16px 48px; }

  #root-cause-cards {
    flex-direction: column;
  }

  #primitive-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .flip-card {
    height: 180px;
  }
}