.dashboard-charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin: 30px;
}

.chart-card {
  background: #fff;
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 6px 14px rgba(0,0,0,0.08);
}

.chart-card h3 {
  margin-bottom: 15px;
  font-size: 18px;
  font-weight: 600;
  color: #444;
}