.chart-panel { margin-bottom: var(--sp-4); }

.chart-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-3);
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.chart-panel__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-md);
}

.chart-legend {
  display: flex;
  gap: var(--sp-4);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  color: var(--ink-muted);
  flex-wrap: wrap;
}
.chart-legend__item { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend__swatch { width: 12px; height: 2px; display: inline-block; }
.chart-legend__swatch.is-dashed { background-image: linear-gradient(90deg, currentColor 50%, transparent 50%); background-size: 5px 2px; height: 0; border-top: 2px dashed currentColor; }

svg.chart { display: block; width: 100%; height: auto; overflow: visible; }

.chart .grid-line { stroke: var(--grid); stroke-width: 1; }
.chart .axis-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  fill: var(--ink-faint);
}
.chart .axis-title {
  font-family: var(--font-mono);
  font-size: 9.5px;
  fill: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.chart .trace-primary { stroke: var(--signal); stroke-width: 1.6; fill: none; }
.chart .trace-fill { fill: var(--signal); opacity: 0.06; }
.chart .trace-secondary { stroke: var(--ink-faint); stroke-width: 1.3; fill: none; }
.chart .trace-secondary-fill { fill: var(--ink-faint); opacity: 0.08; }
.chart .trace-dashed { stroke-dasharray: 5 3; }
.chart .limit-breach-trace { stroke: var(--fail); stroke-width: 1.9; fill: none; }

.chart .limit {
  stroke: var(--fail);
  stroke-width: 1.4;
  stroke-dasharray: 4 3;
}
.chart .limit-zone { fill: var(--fail); opacity: 0.07; }
.chart .limit-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  fill: var(--fail-strong);
}
.chart .limit-tag-bg { fill: var(--fail-wash); }

.chart .crosshair-line { stroke: var(--ink-muted); stroke-width: 1; stroke-dasharray: 2 2; pointer-events: none; }
.chart .crosshair-dot { fill: var(--signal); stroke: var(--panel); stroke-width: 1.5; pointer-events: none; }

.chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--panel-raised);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-raised);
  padding: 7px 10px;
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  color: var(--ink);
  white-space: nowrap;
  z-index: 5;
  opacity: 0;
  transition: opacity 100ms;
}
.chart-tooltip.is-visible { opacity: 1; }
.chart-tooltip__row { display: flex; justify-content: space-between; gap: 10px; }
.chart-tooltip__row + .chart-tooltip__row { margin-top: 2px; }
.chart-tooltip__label { color: var(--ink-muted); }

.chart-surface { position: relative; }

/* sparkline used in Trends run table + stat tiles */
.spark { display: block; }
.spark .spark-line { stroke: var(--signal); stroke-width: 1.4; fill: none; }
.spark .spark-fill { fill: var(--signal); opacity: 0.08; }
.spark .spark-fail-line { stroke: var(--fail); }

/* phase-breakdown bar used on Glossary to decompose http_req_duration */
.phase-bar {
  display: flex;
  height: 26px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
}
.phase-bar__seg {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9.5px;
  color: var(--panel-raised);
  white-space: nowrap;
  overflow: hidden;
  min-width: 2px;
}
.phase-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  color: var(--ink-soft);
}
.phase-legend__item { display: inline-flex; align-items: center; gap: 6px; }
.phase-legend__swatch { width: 10px; height: 10px; border-radius: 2px; }