* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--pique-font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

#app {
  width: 100%;
  min-height: 100vh;
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
}

.kicker {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.075em;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.main-title {
  font-size: 1.85rem;
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 0.5rem;
  color: var(--color-text-main);
}

.deck {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin: 0;
  max-width: 880px;
}

.meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

.meta-item strong {
  color: var(--color-text-muted);
}

/* Two-column Scrollytelling Layout */
.scrolly-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  position: relative;
  padding: 0 1rem;
}

/* Sticky Visual Column */
.visual-column {
  flex: 0 0 52%;
  position: sticky;
  top: 1rem;
  height: calc(100vh - 2rem);
  display: flex;
  flex-direction: column;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  margin: 1rem 0;
  overflow: hidden;
  z-index: 10;
}

.visual-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0.5rem;
}

.visual-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.active-scene-indicator {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}

.scene-nav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.6rem;
}

.nav-pill-btn {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.nav-pill-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.nav-pill-btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.stage-wrapper {
  flex: 1 1 auto;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
  justify-content: center;
}

#svg-stage {
  width: 100%;
  height: auto;
  max-height: 480px;
  display: block;
}

.visual-data-card {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.85rem;
}

.data-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  text-align: center;
}

.card-stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-faint);
  display: block;
}

.card-stat-val {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-text-main);
}

.card-stat-val.primary { color: var(--color-primary); }
.card-stat-val.warning { color: var(--color-warning); }
.card-stat-val.danger { color: var(--color-danger); }

/* Narrative Scroll Column */
.narrative-column {
  flex: 0 0 48%;
  padding: 1rem 1rem 4rem 2rem;
}

.scene-block {
  min-height: 85vh;
  margin-bottom: 4rem;
  padding: 1.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.scene-block.is-active {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.scene-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  background: var(--color-border-subtle);
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.scene-block.is-active .scene-badge {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.scene-title {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 0.85rem;
  color: var(--color-text-main);
}

.scene-body {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.scene-body p {
  margin: 0 0 0.9rem;
}

.rule-highlight-box {
  background: var(--color-bg);
  border-left: 4px solid var(--color-primary);
  padding: 0.85rem 1rem;
  border-radius: 0 8px 8px 0;
  margin: 1rem 0;
  font-size: 0.875rem;
}

.rule-highlight-box strong {
  display: block;
  color: var(--color-text-main);
  margin-bottom: 0.25rem;
}

.rule-highlight-box.warning {
  border-left-color: var(--color-warning);
}

.rule-highlight-box.danger {
  border-left-color: var(--color-danger);
}

.rule-citation {
  display: block;
  font-size: 0.75rem;
  font-family: var(--pique-font-mono);
  color: var(--color-text-faint);
  margin-top: 0.5rem;
}

/* Image Embeds inside scenes */
.scene-figure {
  margin: 1rem 0 1.25rem;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.scene-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.scene-figure figcaption {
  font-size: 0.75rem;
  color: var(--color-text-faint);
  padding: 0.5rem 0.75rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
}

.figure-credit {
  font-weight: 600;
  display: block;
  margin-top: 0.2rem;
}

/* Comparison Table */
.matrix-table-wrapper {
  overflow-x: auto;
  margin: 1rem 0;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  text-align: left;
}

.matrix-table th {
  background: var(--color-bg);
  padding: 0.6rem 0.75rem;
  font-weight: 700;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-main);
}

.matrix-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-muted);
}

.matrix-table tr:last-child td {
  border-bottom: none;
}

.status-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.status-allowed { background: var(--color-success-light); color: var(--color-success); }
.status-speed-limit { background: var(--color-warning-light); color: var(--color-warning); }
.status-banned { background: var(--color-danger-light); color: var(--color-danger); }

/* Document & Source Attribution Footer */
.attribution-footer {
  max-width: 1200px;
  margin: 3rem auto 2rem;
  padding: 1.5rem 1rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

.attribution-footer h3 {
  font-size: 0.95rem;
  color: var(--color-text-main);
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.attribution-footer ul {
  margin: 0;
  padding-left: 1.25rem;
}

.attribution-footer li {
  margin-bottom: 0.35rem;
}

/* Mobile Responsiveness Reflow */
@media (max-width: 860px) {
  .scrolly-container {
    flex-direction: column;
    padding: 0 0.5rem;
  }

  .visual-column {
    position: sticky;
    top: 0;
    width: 100%;
    flex: none;
    height: auto;
    max-height: none;
    margin: 0 0 1rem;
    padding: 0.5rem 0.75rem 0.5rem;
    border-radius: 0 0 12px 12px;
    z-index: 50;
    overflow: visible;
  }

  .visual-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.35rem;
    margin-bottom: 0.35rem;
  }

  .visual-title {
    font-size: 0.85rem;
  }

  .active-scene-indicator {
    font-size: 0.7rem;
    padding: 0.15rem 0.45rem;
  }

  .scene-nav-pills {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.35rem;
    margin-bottom: 0.45rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
  }

  .scene-nav-pills::-webkit-scrollbar {
    display: none;
  }

  .nav-pill-btn {
    flex: 0 0 auto;
    font-size: 0.72rem;
    padding: 0.25rem 0.55rem;
    white-space: nowrap;
    line-height: 1.2;
  }

  .stage-wrapper {
    flex: 0 0 auto;
    min-height: auto;
    display: block;
    margin-bottom: 0.25rem;
  }

  #svg-stage {
    width: 100%;
    height: auto;
    max-height: 145px;
    display: block;
  }

  .visual-data-card {
    margin-top: 0.35rem;
    padding: 0.35rem 0.5rem;
  }

  .card-stat-val {
    font-size: 0.95rem;
  }

  .card-stat-label {
    font-size: 0.65rem;
  }

  .narrative-column {
    flex: none;
    width: 100%;
    padding: 0 0.5rem 3rem;
  }

  .scene-block {
    min-height: auto;
    margin-bottom: 2rem;
    padding: 1.25rem;
  }

  .main-title {
    font-size: 1.45rem;
  }

  .scene-title {
    font-size: 1.2rem;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

html[data-pique-reduced-motion="reduce"] * {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}