body {
  font-family: Arial, sans-serif;
  background-color: #1e1e1e;
  color: white;
  margin: 20px;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

#filters {
  text-align: center;
  margin-bottom: 20px;
}

#filters label, #filters select {
  margin: 0 10px;
  font-size: 14px;
}

.chart-row {
  display: flex;
  justify-content: center;
  gap: 20px;
}

svg {
  background-color: #2e2e2e;
  border: 1px solid #444;
  border-radius: 6px;
}
.tooltip {
  position: absolute;
  background: #333;
  color: #fff;
  padding: 5px;
  border-radius: 4px;
  pointer-events: none;
  font-size: 12px;
  opacity: 0;
  transition: opacity 0.3s ease;
}