body {
  font-family: Arial, sans-serif;
  background-color: #f8f9fa;
  color: #222;
  margin: 0;
  padding: 1rem;
}

h1 {
  margin-bottom: 2rem;
}

.chart-container {
  margin-bottom: 2rem;
  background: white;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

h2 {
  margin-bottom: 0.25rem;
}

h3 {
  margin-top: 0;
  color: #555;
}

.chart-warning {
  color: #b00;
  font-style: italic;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  display: none;
}

canvas {
  width: 100% !important;
  height: auto !important;
  max-height: 400px;
}