.footer {
  margin-top: 2rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  text-align: center;
  color: #6c757d;
  font-size: 0.875rem;
}

.hidden {
  display: none !important;
}

.chart-container {
  min-height: 300px;
  margin-bottom: 2rem;
  position: relative;
}