.segment-breakdown {
  font-size: 0.75rem;
}

.segment-breakdown__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.segment-breakdown__metric-select {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--color-border-light, #e2e8f0);
  border-radius: 0.375rem;
  background: var(--color-panel-main, #ffffff);
  color: var(--color-txt-main, #0f172a);
  cursor: pointer;
  outline: none;
}

.segment-breakdown__metric-select:focus {
  border-color: var(--color-brand, #e6c619);
  box-shadow: 0 0 0 2px rgba(230, 198, 25, 0.15);
}

.segment-breakdown__chart {
  width: 100%;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

/* The bar row: left-aligned so that when the bars overflow (many intervals)
   the overflow extends to the right and the chart scrolls horizontally. */
.segment-breakdown__bars {
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  gap: 0.25rem;
  height: 160px;
}

.segment-breakdown__bar-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  min-width: 24px;
  flex-shrink: 0; /* never compress bars — scroll instead when they overflow */
  height: 100%;
}

.segment-breakdown__value-above {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--color-txt-main, #0f172a);
  line-height: 1.1;
  margin-bottom: 2px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.segment-breakdown__bar {
  width: 100%;
  border-radius: 3px 3px 0 0;
  transition: height 0.4s ease, background 0.3s ease;
  min-height: 4px;
  cursor: pointer;
}

.segment-breakdown__bar:hover {
  opacity: 0.8;
}

/* Pace colors */
.segment-breakdown__bar--pace-fast {
  background: #EF4444;
}

.segment-breakdown__bar--pace-mid {
  background: #EAB308;
}

.segment-breakdown__bar--pace-slow {
  background: #22C55E;
}

/* HR colors - gradient from cool (low HR) to warm (high HR) */
.segment-breakdown__bar--hr-low {
  background: linear-gradient(to top, #60A5FA, #3B82F6);
}

.segment-breakdown__bar--hr-mid {
  background: linear-gradient(to top, #FBBF24, #F97316);
}

.segment-breakdown__bar--hr-high {
  background: linear-gradient(to top, #F87171, #EF4444);
}

/* Power colors - gradient from cool (low power) to warm (high power) */
.segment-breakdown__bar--power-low {
  background: linear-gradient(to top, #34D399, #10B981);
}

.segment-breakdown__bar--power-mid {
  background: linear-gradient(to top, #FBBF24, #F97316);
}

.segment-breakdown__bar--power-high {
  background: linear-gradient(to top, #F87171, #EF4444);
}

.segment-breakdown__label {
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--color-txt-muted, #64748b);
  margin-top: 2px;
  text-align: center;
  white-space: nowrap;
}

.segment-breakdown__summary {
  display: flex;
  gap: 1rem;
  justify-content: center;
  padding-top: 0.5rem;
  margin-top: 0.5rem;
  border-top: 1px solid var(--color-border-light, #e2e8f0);
  font-size: 0.65rem;
  color: var(--color-txt-muted, #64748b);
}

.segment-breakdown__summary-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.segment-breakdown__summary-value {
  font-weight: 700;
  color: var(--color-txt-main, #0f172a);
  font-variant-numeric: tabular-nums;
}

.segment-breakdown__empty {
  text-align: center;
  padding: 2rem 0;
  color: var(--color-txt-muted, #64748b);
  font-size: 0.7rem;
}