/* ─── Chart Container ─── */
.chart-container {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.chart-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.chart-header-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chart-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

.chart-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.chart-header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.chart-body {
  padding: var(--spacing-lg);
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chart-body canvas {
  max-width: 100%;
}

/* Period selector — deprecated, replaced by .filter-presets / .preset-chip
   in components.css. This block is kept empty as a reminder; no selectors
   should be added here. */

/* ─── Chart Legend ─── */
.chart-legend {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.legend-item:hover {
  opacity: 0.75;
}

.legend-item.hidden {
  opacity: 0.4;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.legend-line {
  width: 16px;
  height: 3px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* ─── Mini Charts / Sparklines ─── */
.sparkline-wrapper {
  height: 40px;
  width: 100px;
}

/* ─── Chart Stats Row ─── */
.chart-stats-row {
  display: flex;
  border-top: 1px solid var(--color-border-light);
}

.chart-stat {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  border-right: 1px solid var(--color-border-light);
  text-align: center;
}

.chart-stat:last-child {
  border-right: none;
}

.chart-stat-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 4px;
}

.chart-stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ─── Placeholder / Loading state ─── */
.chart-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  min-height: 200px;
  color: var(--color-text-muted);
}

.chart-placeholder .material-icons {
  font-size: 40px;
  opacity: 0.4;
}

.chart-placeholder-text {
  font-size: var(--font-size-sm);
}