/* ============================================
   CHARTS CSS — Chart wrappers and controls
   ============================================ */

.chart-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}

.chart-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border-color);
  gap: 12px;
}

.chart-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.chart-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.chart-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.chart-type-btn {
  padding: 4px 10px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--card-bg);
  font-family: var(--font-family);
}
.chart-type-btn:hover { background: var(--page-bg); }
.chart-type-btn.active { background: var(--color-primary); color: white; border-color: var(--color-primary); }

.chart-body {
  padding: 16px 20px;
  position: relative;
}

.chart-body--sm { height: 180px; }
.chart-body--dash { height: 220px; max-height: 220px; }
.chart-body--md { height: 240px; }
.chart-body--lg { height: 300px; }
.chart-body--xl { height: 380px; }

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

/* Chart legend */
.chart-legend {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

/* Chart summary metrics below charts */
.chart-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  border-top: 1px solid var(--border-color);
}

.chart-metric {
  padding: 12px 16px;
  border-right: 1px solid var(--border-color);
  text-align: center;
}
.chart-metric:last-child { border-right: none; }

.chart-metric-value {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.chart-metric-label {
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-muted);
  margin-top: 3px;
}

/* Donut center text */
.donut-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.donut-center {
  position: absolute;
  text-align: center;
  pointer-events: none;
}

.donut-center-value {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
}

.donut-center-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

/* Sparkline */
.sparkline-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 32px;
}

.sparkline-bar {
  flex: 1;
  border-radius: 2px 2px 0 0;
  background: var(--color-primary);
  opacity: 0.5;
  transition: opacity var(--transition-fast);
  min-width: 4px;
}
.sparkline-bar:hover { opacity: 1; }
.sparkline-bar--success { background: var(--color-success); }
.sparkline-bar--danger { background: var(--color-danger); }

/* Report chart export button */
.chart-export-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-color);
  background: var(--card-bg);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-family);
}
.chart-export-btn:hover { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-light); }
.chart-export-btn svg { width: 12px; height: 12px; }

/* KPI Gauge */
.gauge-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px;
}

.gauge-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.gauge-label {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
  .chart-body--lg { height: 220px; }
  .chart-body--xl { height: 260px; }
  .chart-metrics { grid-template-columns: 1fr 1fr; }
}