.controls {
  margin: 1em;
  display: flex;
  gap: 0.5em;
  flex-wrap: wrap;
}

.controls button {
  padding: 0.5em 1em;
  font-size: 1em;
  cursor: pointer;
}

.auto-controls {
  margin: 1em;
  display: flex;
  gap: 1em;
  align-items: center;
}

.auto-controls input {
  width: 5em;
  padding: 0.3em;
}

.auto-controls button.active {
  background: #4a7c59;
  color: white;
}

.stats {
  margin: 1em;
  display: flex;
  gap: 2em;
  flex-wrap: wrap;
}

.chart-container {
  margin: 1em;
  max-width: 800px;
  height: 400px;
}