.history-strata-lab {
  --strata-coral: #df604a;
  --strata-blue: #3978b9;
  --strata-olive: #858426;
  --strata-green: #287e67;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-media);
  background: #f8f9f6;
  box-shadow: var(--shadow-panel);
  container-name: history-strata;
  container-type: inline-size;
}

.history-strata-demo-row {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.history-strata-home .history-strata-stage {
  height: 378px;
}

.history-strata-header {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0 var(--space-3-5);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--type-dense-compact);
  font-weight: 650;
}

.history-strata-run {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--strata-green);
  white-space: nowrap;
}

.history-strata-run i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 12%, transparent);
}

.history-strata-run b {
  font: inherit;
}

.history-strata-run[data-strata-run-state="future"] {
  color: var(--action-primary-strong);
}

.history-strata-stage {
  position: relative;
  height: clamp(340px, 24vw, 360px);
  overflow: hidden;
  background:
    linear-gradient(rgba(19, 35, 31, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19, 35, 31, 0.035) 1px, transparent 1px),
    #f3f5f1;
  background-size: 26px 26px;
}

.history-strata-stage canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.history-strata-legend {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-2) var(--space-3-5);
  max-width: calc(100% - 24px);
  padding: var(--space-2) var(--space-2-5);
  border: 1px solid rgba(19, 35, 31, 0.12);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 6px 16px rgba(19, 35, 31, 0.05);
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--type-dense-micro);
  font-weight: 700;
  text-transform: uppercase;
}

.history-strata-legend span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1-5);
  white-space: nowrap;
}

.history-strata-legend i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--strata-coral);
}

.history-strata-legend i[data-tone="support"] {
  border-radius: 1px;
  background: var(--strata-blue);
}

.history-strata-legend i[data-tone="policy"] {
  border-radius: 0;
  background: var(--strata-olive);
  transform: rotate(45deg);
}

.history-strata-legend i[data-tone="future"] {
  border: 1px solid var(--strata-coral);
  background: transparent;
}

.history-strata-readout {
  display: grid;
  min-height: 94px;
  grid-template-columns: 0.72fr 0.9fr 1.55fr;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.history-strata-readout > section {
  min-width: 0;
  padding: var(--space-3-5) var(--space-3-5);
}

.history-strata-readout > section + section {
  border-left: 1px solid var(--line);
}

.history-strata-readout small,
.strata-layer-metrics dt {
  display: block;
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--type-dense-micro);
  font-weight: 700;
}

.strata-selected-layer {
  display: grid;
  align-content: center;
  gap: var(--space-1);
}

.strata-selected-layer strong {
  color: var(--ink);
  font-size: var(--type-body);
  line-height: 1.1;
}

.strata-selected-layer span {
  color: var(--strata-green);
  font-family: var(--mono);
  font-size: var(--type-dense-compact);
  font-weight: 650;
}

.history-strata-lab[data-period="future"] .strata-selected-layer span {
  color: var(--action-primary-strong);
}

.strata-layer-metrics {
  display: grid;
  align-items: center;
}

.strata-layer-metrics dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
}

.strata-layer-metrics dl > div {
  min-width: 0;
}

.strata-layer-metrics dd {
  margin: var(--space-1-5) 0 0;
  color: var(--ink);
  font-family: var(--mono);
  font-size: var(--type-label);
  font-weight: 700;
}

.strata-causal-chain {
  display: grid;
  align-content: center;
  gap: var(--space-3);
}

.strata-causal-chain > div {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-1-5);
}

.strata-causal-chain span {
  min-width: 0;
  padding: var(--space-1-5) var(--space-1-5);
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: var(--type-dense-micro);
  font-weight: 650;
  text-align: center;
  white-space: nowrap;
}

.strata-causal-chain i {
  position: relative;
  min-width: 8px;
  height: 1px;
  flex: 1;
  background: var(--line-strong);
}

.strata-causal-chain i::after {
  position: absolute;
  top: -2px;
  right: 0;
  width: 4px;
  height: 4px;
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
  content: "";
  transform: rotate(45deg);
}

.history-strata-timeline {
  display: grid;
  min-height: 76px;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  gap: var(--space-3-5);
  padding: var(--space-2-5) var(--space-3-5) var(--space-2);
  border-top: 1px solid var(--line);
  background: #eef1ed;
}

.strata-play-toggle {
  display: grid;
  width: 34px;
  height: 34px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
}

.strata-play-toggle:hover,
.strata-play-toggle:focus-visible {
  border-color: var(--ink);
}

.strata-play-toggle svg {
  width: 13px;
  height: 13px;
}

.strata-play-toggle .strata-icon-play,
.strata-play-toggle[aria-pressed="false"] .strata-icon-pause {
  display: none;
}

.strata-play-toggle[aria-pressed="false"] .strata-icon-play {
  display: block;
  margin-left: var(--space-half);
}

.strata-timeline-control {
  --today-position: 89.74%;
  position: relative;
  display: grid;
  min-width: 0;
  gap: var(--space-2);
}

.strata-timeline-control input[type="range"] {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 14px;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: ew-resize;
}

.strata-timeline-control input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: linear-gradient(to right, var(--line-strong) 0 var(--today-position), rgba(223, 96, 74, 0.42) var(--today-position) 100%);
}

.strata-timeline-control input[type="range"]::-webkit-slider-thumb {
  width: 14px;
  height: 14px;
  margin-top: calc(-1 * var(--space-1-5));
  appearance: none;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--strata-coral);
  box-shadow: 0 0 0 1px var(--strata-coral);
}

.strata-timeline-control input[type="range"]::-moz-range-track {
  height: 2px;
  border: 0;
  background: var(--line-strong);
}

.strata-timeline-control input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--strata-coral);
}

.strata-today-marker {
  position: absolute;
  z-index: 1;
  top: -9px;
  left: var(--today-position);
  display: grid;
  justify-items: center;
  color: var(--action-primary-strong);
  transform: translateX(-50%);
}

.strata-today-marker i {
  width: 1px;
  height: 22px;
  background: currentColor;
}

.strata-today-marker b {
  margin-top: var(--space-half);
  font-family: var(--mono);
  font-size: var(--type-dense-micro);
}

.strata-timeline-labels {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--type-dense-micro);
  font-weight: 650;
}

.strata-timeline-labels span:last-child {
  color: var(--action-primary-strong);
}

@container history-strata (max-width: 680px) {
  .history-strata-readout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .strata-causal-chain {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
    border-left: 0 !important;
  }
}

@container history-strata (max-width: 500px) {
  .history-strata-stage {
    height: 320px;
  }

  .history-strata-readout {
    grid-template-columns: 1fr;
  }

  .history-strata-readout > section + section {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .strata-causal-chain > div {
    flex-wrap: wrap;
  }

  .strata-causal-chain i {
    flex: 0 0 10px;
  }

  .history-strata-timeline {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: var(--space-2);
    padding-right: var(--space-2-5);
    padding-left: var(--space-2-5);
  }

  .strata-timeline-labels span:nth-child(2),
  .strata-timeline-labels span:nth-child(3) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .history-strata-lab * {
    animation: none !important;
  }
}