.chart-card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.chart-title-group {
  flex: 1;
}

.chart-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

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

.chart-badge {
  background-color: rgba(45, 94, 30, 0.08);
  color: var(--color-primary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
}

.chart-container {
  position: relative;
  width: 100%;
  max-height: 280px;
  margin-bottom: var(--spacing-lg);
}

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

/* Chart tabs */
.chart-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.chart-tab {
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  background: transparent;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.chart-tab:hover {
  border-color: var(--color-primary);
}

.chart-tab.active {
  background-color: var(--color-primary);
  color: var(--color-accent);
  border-color: var(--color-primary);
}

/* Legend */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

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

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

.legend-line {
  width: 10px;
  height: 2px;
  flex-shrink: 0;
  margin-top: 3px;
}

/* Donut chart wrapper */
.donut-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-lg);
}

.donut-container {
  position: relative;
  width: 140px;
  height: 140px;
  flex-shrink: 0;
}

.donut-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.donut-center-value {
  font-size: 1.3rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

.donut-center-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.donut-info {
  flex: 1;
}

.donut-info-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-top: var(--spacing-md);
}

/* Bar chart wrapper */
.bar-wrapper {
  position: relative;
  width: 100%;
  min-height: 200px;
}

/* Payback visualization */
.payback-viz {
  display: flex;
  gap: 4px;
  align-items: flex-end;
  height: 60px;
  margin: var(--spacing-lg) 0;
}

.payback-bar {
  flex: 1;
  border-radius: 3px 3px 0 0;
  transition: all var(--transition-normal);
  min-width: 6px;
  background-color: var(--color-border);
}

.payback-bar.paid {
  background-color: var(--color-success);
}

.payback-bar.current {
  background-color: var(--color-accent);
  position: relative;
}

.payback-bar:hover {
  opacity: 0.8;
}

/* ROI Milestones table */
.milestones-table {
  width: 100%;
}

.milestone-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-base);
}

.milestone-row:last-child {
  border-bottom: none;
}

.milestone-label {
  color: var(--color-text-secondary);
}

.milestone-value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.milestone-value.highlight {
  color: var(--color-primary);
}

/* Responsive charts */
@media (max-width: 768px) {
  .chart-card {
    padding: var(--spacing-lg);
  }
  
  .chart-header {
    flex-direction: column;
  }
  
  .donut-wrapper {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .donut-container {
    width: 120px;
    height: 120px;
  }
  
  .chart-legend {
    flex-direction: column;
  }
}