/* ====================================
   SECTION 8: PHYSICAL AI — STYLES
   ==================================== */

/* --- BLOCK 1: QUOTE HERO --- */
.pai-quote-hero {
  position: relative;
  text-align: center;
  padding: 3rem 2rem;
  margin-bottom: 2.5rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(78,205,196,0.06) 0%, rgba(124,77,255,0.06) 100%);
  border: 1px solid rgba(78,205,196,0.12);
  overflow: hidden;
}

.pai-quote-glow {
  position: absolute;
  top: -60%;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(78,205,196,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.pai-quote-text {
  position: relative;
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-primary);
  max-width: 750px;
  margin: 0 auto 1rem;
  letter-spacing: -0.01em;
}

.pai-quote-cite {
  display: block;
  font-size: 0.88rem;
  font-style: normal;
  color: var(--accent-teal);
  font-weight: 600;
}

/* --- STAT ROW --- */
.pai-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 3rem;
}

.pai-stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.06);
  transition: transform var(--transition), border-color var(--transition);
}

.pai-stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(78,205,196,0.25);
}

.pai-stat-num {
  display: block;
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--accent-teal);
  letter-spacing: -0.03em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.pai-stat-num small {
  font-size: 0.5em;
  font-weight: 700;
  opacity: 0.8;
}

.pai-stat-label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 8px;
  line-height: 1.4;
}

.pai-up {
  color: #66BB6A;
  font-weight: 700;
}

/* --- BLOCK GENERIC --- */
.pai-block {
  margin-bottom: 3rem;
}

.pai-block-sub {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin: -0.75rem 0 1.5rem;
  line-height: 1.5;
}

/* --- BLOCK 2: BRAIN RACE --- */
.pai-brain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 1.5rem;
}

.pai-brain-card {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  cursor: default;
}

.pai-brain-card:hover {
  transform: translateY(-4px);
  border-color: rgba(78,205,196,0.3);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.pai-brain-card--dvc {
  border-color: rgba(245,197,66,0.3);
}
.pai-brain-card--dvc:hover {
  border-color: rgba(245,197,66,0.5);
  box-shadow: 0 8px 32px rgba(245,197,66,0.1);
}

.pai-brain-card::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  padding: 12px 14px;
  background: #1A1A2E;
  color: var(--text-secondary);
  font-size: 0.78rem;
  line-height: 1.5;
  border-radius: 8px;
  border: 1px solid rgba(78,205,196,0.15);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 10;
}

.pai-brain-card:hover::after {
  opacity: 1;
}

.pai-brain-icon {
  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 4px;
}

.pai-brain-card strong {
  font-size: 1rem;
  color: var(--text-primary);
}

.pai-brain-model {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.pai-brain-stats {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 4px;
}

.pai-brain-stats .tabnum {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-teal);
}

.pai-brain-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.pai-tag {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--tag-color) 12%, transparent);
  color: var(--tag-color);
  letter-spacing: 0.02em;
}

/* --- INSIGHT CALLOUT --- */
.pai-insight-callout {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: rgba(78,205,196,0.06);
  border-left: 3px solid var(--accent-teal);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.pai-insight-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.pai-insight-callout p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.5;
}

/* --- BLOCK 3: TIER LIST --- */
.pai-tier {
  margin-bottom: 16px;
}

.pai-tier-label {
  display: block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
  padding-left: 4px;
}

.pai-tier-label--elite { color: var(--accent-teal); }
.pai-tier-label--contenders { color: var(--accent-blue); }
.pai-tier-label--rising { color: var(--text-secondary); }

.pai-tier-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.pai-tier-card {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border: 1px solid rgba(255,255,255,0.06);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  cursor: default;
}

.pai-tier-card:hover {
  transform: translateY(-3px);
  border-color: rgba(78,205,196,0.2);
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
}

.pai-tier-card::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: 240px;
  padding: 10px 12px;
  background: #1A1A2E;
  color: var(--text-secondary);
  font-size: 0.75rem;
  line-height: 1.5;
  border-radius: 8px;
  border: 1px solid rgba(78,205,196,0.15);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 10;
}

.pai-tier-card:hover::after {
  opacity: 1;
}

.pai-tier-card strong {
  font-size: 15px;
  color: var(--text-primary);
}

.pai-tier-val {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-teal);
}

.pai-tier-card--dvc {
  border-color: rgba(245,197,66,0.3);
}

.pai-tier-card--dvc:hover {
  border-color: rgba(245,197,66,0.5);
  box-shadow: 0 6px 24px rgba(245,197,66,0.1);
}

/* --- SHIPMENT BAR --- */
.pai-shipment-bar {
  margin-top: 1.5rem;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
}

.pai-shipment-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
}

.pai-shipment-title {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.pai-shipment-total {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--accent-teal);
  font-variant-numeric: tabular-nums;
}

.pai-shipment-track {
  display: flex;
  height: 36px;
  border-radius: 6px;
  overflow: hidden;
  background: rgba(255,255,255,0.04);
}

.pai-shipment-fill {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.pai-shipment-fill span {
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.pai-shipment-fill--china {
  background: linear-gradient(90deg, var(--accent-coral) 0%, #E8837C 100%);
  color: #fff;
}

.pai-shipment-fill--row {
  background: var(--accent-blue);
  color: #fff;
}

/* --- BLOCK 4: AV GRID --- */
.pai-av-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 2.5rem;
}

.pai-av-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.06);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.pai-av-card:hover {
  transform: translateY(-3px);
  border-color: rgba(78,205,196,0.25);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.pai-av-card--leader {
  grid-column: span 1;
  border-color: rgba(78,205,196,0.15);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(78,205,196,0.04) 100%);
}

.pai-av-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.pai-av-header h4 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.pai-av-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(78,205,196,0.12);
  color: var(--accent-teal);
  letter-spacing: 0.04em;
}

.pai-av-badge--alpha { background: rgba(78,205,196,0.12); color: var(--accent-teal); }
.pai-av-badge--tesla { background: rgba(232,131,124,0.12); color: var(--accent-coral); }
.pai-av-badge--cn { background: rgba(245,197,66,0.12); color: var(--accent-gold); }
.pai-av-badge--amz { background: rgba(74,144,217,0.12); color: var(--accent-blue); }

.pai-av-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 10px;
}

.pai-av-stat {
  display: flex;
  flex-direction: column;
}

.pai-av-stat-num {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--accent-teal);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.pai-av-stat-label {
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.3;
}

.pai-av-details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.pai-av-card.expanded .pai-av-details {
  max-height: 200px;
}

.pai-av-details p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 8px 0 4px;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* --- CHART BLOCK --- */
.pai-chart-block {
  margin-bottom: 2.5rem;
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
}

.pai-chart-title {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin: 0 0 4px;
}

.pai-chart-annotation {
  font-size: 0.78rem;
  color: var(--accent-teal);
  font-weight: 600;
  margin: 0 0 16px;
}

.pai-chart-wrap {
  position: relative;
  width: 100%;
  max-height: 300px;
}

/* --- ECONOMICS BLOCK --- */
.pai-econ-block {
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 2.5rem;
}

.pai-econ-title {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin: 0 0 20px;
}

.pai-econ-bars {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 16px;
}

.pai-econ-row {
  display: grid;
  grid-template-columns: 110px 1fr 80px;
  gap: 12px;
  align-items: center;
}

.pai-econ-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: right;
}

.pai-econ-bar-track {
  height: 28px;
  background: rgba(255,255,255,0.04);
  border-radius: 6px;
  overflow: hidden;
}

.pai-econ-bar {
  height: 100%;
  width: 0;
  background: var(--bar-color);
  border-radius: 6px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.pai-econ-val {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.pai-econ-footer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.pai-econ-metric {
  text-align: center;
}

.pai-econ-metric-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.pai-econ-metric-val {
  display: block;
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--accent-teal);
}

.pai-econ-metric-val small {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-gold);
  margin-top: 2px;
}

/* --- BLOCK 5: TREEMAP --- */
.pai-treemap-wrap {
  position: relative;
  margin-bottom: 2rem;
}

.pai-penetration-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(232,131,124,0.1);
  border: 1px solid rgba(232,131,124,0.2);
  border-radius: 20px;
  margin-bottom: 16px;
}

.pai-penetration-pct {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--accent-coral);
}

.pai-penetration-txt {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.pai-treemap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 6px;
  min-height: 220px;
}

.pai-treemap-cell {
  position: relative;
  background: color-mix(in srgb, var(--cell-color) 15%, var(--bg-card));
  border: 1px solid color-mix(in srgb, var(--cell-color) 25%, transparent);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}

.pai-treemap-cell:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  border-color: var(--cell-color);
  z-index: 2;
}

.pai-treemap-cell strong {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.pai-treemap-cell > span {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--cell-color);
  font-variant-numeric: tabular-nums;
  margin-top: 4px;
}

/* Make cells proportional — first row bigger */
.pai-treemap-cell:nth-child(1) { grid-column: span 2; } /* Manufacturing $8T */
.pai-treemap-cell:nth-child(8) { grid-column: span 2; } /* Other $11.5T */

.pai-treemap-tooltip {
  position: fixed;
  padding: 12px 16px;
  background: #1A1A2E;
  color: var(--text-secondary);
  font-size: 0.78rem;
  line-height: 1.5;
  border-radius: 8px;
  border: 1px solid rgba(78,205,196,0.2);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  max-width: 280px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 100;
}

.pai-treemap-tooltip.visible {
  opacity: 1;
}

/* --- MARKET ARROW --- */
.pai-market-arrow {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 20px 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
}

.pai-market-arrow-start,
.pai-market-arrow-end {
  text-align: center;
  flex-shrink: 0;
  min-width: 80px;
}

.pai-market-arrow-val {
  display: block;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--accent-teal);
  font-variant-numeric: tabular-nums;
}

.pai-market-arrow-yr {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 2px;
}

.pai-market-arrow-end .pai-market-arrow-val {
  color: var(--accent-gold);
}

.pai-market-arrow-line {
  flex: 1;
  position: relative;
  height: 3px;
  background: rgba(255,255,255,0.08);
  margin: 0 16px;
  border-radius: 2px;
  overflow: hidden;
}

.pai-market-arrow-flow {
  position: absolute;
  top: 0;
  left: -40%;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--accent-teal), var(--accent-gold), transparent);
  animation: pai-flow 2.5s linear infinite;
}

@keyframes pai-flow {
  0% { left: -40%; }
  100% { left: 100%; }
}

.pai-market-arrow-label {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* ====================================
   RESPONSIVE
   ==================================== */
@media (max-width: 768px) {
  .pai-stat-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .pai-stat-num {
    font-size: 2rem;
  }

  .pai-quote-text {
    font-size: 1.1rem;
    padding: 0 0.5rem;
  }

  .pai-brain-grid {
    grid-template-columns: 1fr;
  }

  .pai-tier-cards {
    grid-template-columns: 1fr 1fr;
  }

  .pai-av-grid {
    grid-template-columns: 1fr;
  }

  .pai-av-card--leader {
    grid-column: span 1;
  }

  .pai-econ-row {
    grid-template-columns: 80px 1fr 60px;
    gap: 8px;
  }

  .pai-econ-label {
    font-size: 0.72rem;
  }

  .pai-econ-footer {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .pai-treemap {
    grid-template-columns: repeat(2, 1fr);
  }

  .pai-treemap-cell:nth-child(1) { grid-column: span 2; }
  .pai-treemap-cell:nth-child(8) { grid-column: span 2; }

  .pai-market-arrow {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .pai-market-arrow-line {
    width: 100%;
    margin: 0;
    height: 3px;
  }

  .pai-market-arrow-label {
    position: static;
    transform: none;
    margin-bottom: 8px;
  }

  .pai-brain-card::after,
  .pai-tier-card::after {
    display: none;
  }
}

@media (max-width: 480px) {
  .pai-tier-cards {
    grid-template-columns: 1fr;
  }

  .pai-av-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .pai-stat-num {
    font-size: 1.75rem;
  }
}