/* charts.css — chart-specific styles */

.chart-container {
  position: relative;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  overflow: hidden;
}

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

.chart-axis path,
.chart-axis line {
  stroke: var(--surface-border);
  stroke-width: 1;
}

.chart-axis text {
  fill: var(--text-2);
  font-size: 11px;
  font-family: var(--font-sans);
}

.chart-grid line {
  stroke: var(--surface-border);
  stroke-width: 1;
  stroke-dasharray: 3 3;
}

.chart-bar {
  transition: opacity var(--transition-fast);
  cursor: pointer;
}

.chart-bar:hover {
  opacity: 0.85;
}

.chart-line {
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-area {
  stroke: none;
  opacity: 0.15;
}

.chart-point {
  transition: r var(--transition-fast), stroke-width var(--transition-fast);
  cursor: pointer;
}

.chart-point:hover {
  r: 5;
  stroke-width: 3;
}

.chart-tooltip {
  position: absolute;
  pointer-events: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  background: var(--bg-3);
  border: 1px solid var(--surface-border);
  color: var(--text-0);
  font-size: 0.8125rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 40;
  white-space: nowrap;
}

.chart-tooltip.visible {
  opacity: 1;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.chart-legend-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-2);
}

.chart-legend-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
}

.chart-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: flex-end;
  margin-bottom: var(--space-5);
  padding: var(--space-4);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
}

.chart-controls .form-group {
  margin-bottom: 0;
  flex: 1 1 8rem;
  min-width: 6rem;
}