/* Overview tab: regional trip-volume summary across MTP24 horizon years */

.overview-viz-root {
  position: relative;
  color-scheme: light;
  --ov-page:        #ffffff;
  --ov-surface:      #ffffff;
  --ov-text-primary: #0b0b0b;
  --ov-text-secondary: #52514e;
  --ov-text-muted:   #898781;
  --ov-gridline:     #e1e0d9;
  --ov-baseline:     #c3c2b7;
  --ov-border:       rgba(11, 11, 11, 0.10);

  --ov-total:        #2a78d6;
  --ov-auto:         #2a78d6;
  --ov-transit:      #eb6834;
  --ov-nonmotor:     #1baf7a;
  --ov-schoolbus:    #eda100;

  /* Categorical hues (validated adjacent-pair order) for the 5 horizon years. */
  --ov-year-1:       #2a78d6;
  --ov-year-2:       #eb6834;
  --ov-year-3:       #1baf7a;
  --ov-year-4:       #eda100;
  --ov-year-5:       #e87ba4;

  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5em 1em 3em;
  background: var(--ov-page);
}

.overview-viz-root .overview-header {
  text-align: center;
  color: var(--ov-text-primary);
  font-size: 2em;
  font-weight: bold;
  margin-bottom: 0.2em;
}

.overview-viz-root .overview-subhead {
  text-align: center;
  color: var(--ov-text-secondary);
  font-size: 1.05em;
  max-width: 900px;
  margin: 0 auto 0.6em;
}

.overview-viz-root .overview-note {
  text-align: center;
  color: var(--ov-text-muted);
  font-size: 0.85em;
  max-width: 900px;
  margin: 0 auto 1.6em;
}

/* KPI tiles */
.overview-kpi-tile {
  background: #f5f0d6;
  border: 1px solid var(--ov-border);
  border-radius: 6px;
  padding: 0.9em 0.6em;
  text-align: center;
  margin-bottom: 1em;
}

.overview-kpi-tile .overview-kpi-label {
  color: var(--ov-text-secondary);
  font-size: 0.8em;
  line-height: 1.3em;
  min-height: 2.6em;
}

.overview-kpi-tile .overview-kpi-value {
  color: var(--ov-text-primary);
  font-size: 1.7em;
  font-weight: 600;
  margin: 0.15em 0;
}

.overview-kpi-tile .overview-kpi-delta {
  color: var(--ov-text-muted);
  font-size: 0.8em;
}

/* Chart card */
.overview-chart-card {
  background: var(--ov-surface);
  border: 1px solid var(--ov-border);
  border-radius: 6px;
  padding: 1.2em 1.2em 0.6em;
  margin-top: 1.2em;
}

.overview-chart-title {
  color: var(--ov-text-primary);
  font-size: 1.4em;
  font-weight: 600;
  text-align: center;
}

.overview-chart-subtitle {
  color: var(--ov-text-secondary);
  font-size: 1.05em;
  text-align: center;
  max-width: 700px;
  margin: 0.2em auto 0.8em;
}

.overview-chart-caveat {
  color: var(--ov-text-muted);
  font-size: 0.85em;
  font-style: italic;
  max-width: 700px;
  margin: -0.3em auto 1em;
  padding: 0.5em 0.8em;
  border-left: 3px solid var(--ov-schoolbus);
  background: rgba(237, 161, 0, 0.06);
  border-radius: 0 4px 4px 0;
  text-align: left;
}

.overview-chart-caveat > div + div {
  margin-top: 0.5em;
}

.overview-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.2em;
  margin-bottom: 0.8em;
}

.overview-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--ov-text-secondary);
  font-size: 1.05em;
  cursor: pointer;
  user-select: none;
}

.overview-legend-item.dimmed {
  opacity: 0.35;
}

.overview-legend-item svg {
  flex: 0 0 auto;
  overflow: visible;
}

.overview-chart-svg {
  width: 100%;
  height: auto;
  display: block;
}

.overview-chart-svg .ov-gridline {
  stroke: var(--ov-gridline);
  stroke-width: 1px;
}

.overview-chart-svg .ov-baseline {
  stroke: var(--ov-baseline);
  stroke-width: 1px;
}

.overview-chart-svg .ov-axis-label {
  fill: var(--ov-text-muted);
  font-size: 11px;
}

.overview-chart-svg .ov-category-label {
  fill: var(--ov-text-secondary);
  font-size: 12px;
}

.overview-chart-svg .ov-total-label {
  fill: var(--ov-text-primary);
  font-size: 12px;
  font-weight: 600;
  text-anchor: middle;
}

.overview-chart-svg .ov-hit-target {
  fill: transparent;
  cursor: pointer;
}

.overview-chart-svg .ov-hit-target.hovered {
  fill: var(--ov-text-primary);
  opacity: 0.04;
}

.overview-chart-svg .ov-year-line.ov-line-hidden {
  display: none;
}

.overview-chart-svg .ov-marker {
  pointer-events: none;
}

.overview-chart-svg .ov-branch-divider {
  stroke: var(--ov-baseline);
  stroke-width: 1px;
  stroke-dasharray: 3 3;
}

.overview-chart-svg .ov-branch-label {
  fill: var(--ov-text-muted);
  font-size: 10px;
  text-anchor: middle;
}

/* Tooltip */
.overview-tooltip {
  position: absolute;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.1s ease;
  background: var(--ov-surface);
  border: 1px solid var(--ov-border);
  border-radius: 4px;
  padding: 0.6em 0.8em;
  font-size: 0.8em;
  color: var(--ov-text-secondary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 10000;
  min-width: 180px;
}

.overview-tooltip .ov-tooltip-title {
  color: var(--ov-text-primary);
  font-weight: 600;
  margin-bottom: 0.4em;
}

.overview-tooltip .ov-tooltip-row {
  display: flex;
  align-items: center;
  gap: 0.4em;
  margin: 0.15em 0;
}

.overview-tooltip .ov-tooltip-key {
  width: 10px;
  height: 2px;
  border-radius: 1px;
  flex: 0 0 auto;
}

.overview-tooltip .ov-tooltip-value {
  color: var(--ov-text-primary);
  font-weight: 600;
}

.overview-tooltip .ov-tooltip-label {
  color: var(--ov-text-secondary);
}

.overview-tooltip .ov-tooltip-total {
  border-top: 1px solid var(--ov-border);
  margin-top: 0.4em;
  padding-top: 0.4em;
  color: var(--ov-text-primary);
  font-weight: 600;
}

.overview-hourly-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  margin-top: 1em;
}

.overview-hourly-controls label {
  color: var(--ov-text-secondary);
  font-size: 1em;
  font-weight: normal;
  margin: 0;
}

.overview-hourly-controls select {
  width: auto;
  display: inline-block;
}

/* Table toggle + table */
.overview-table-toggle {
  text-align: center;
  margin-top: 0.8em;
}

.overview-table-toggle label {
  color: var(--ov-text-secondary);
  font-size: 0.85em;
  font-weight: normal;
  cursor: pointer;
}

.overview-table-container {
  margin-top: 1em;
  margin-bottom: 2.5em;
}

.overview-table-container.hidden-table {
  display: none;
}

.overview-table-container table {
  color: var(--ov-text-secondary);
}

.overview-table-container th {
  color: var(--ov-text-primary);
}

.overview-table-container td.ov-num {
  font-variant-numeric: tabular-nums;
}

.overview-table-container th.ov-num,
.overview-table-container td.ov-num {
  text-align: right;
}