.chart-container {
  background: var(--bg-secondary);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-lg);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
  margin-bottom: var(--spacing-xl);
}

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

.chart-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.chart-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.chart-wrapper {
  position: relative;
  height: 300px;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
}

.empty-chart {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 300px;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
}

.chart-limit-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.chart-limit-select {
  padding: var(--spacing-sm) 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chart-limit-select:hover {
  border-color: var(--accent-primary);
}

.chart-limit-select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

@media (max-width: 768px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }

  .chart-wrapper {
    height: 250px;
  }

  .chart-header {
    flex-direction: column;
    align-items: stretch;
  }

  .chart-limit-label {
    justify-content: space-between;
  }
}