body { 
  background: #f8f9fa; 
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
}
.card { min-height: 140px; }

@media (max-width: 768px) {
  .table {
    display: block;
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
  }

  .form-control,
  .form-select,
  .btn {
    font-size: 1rem;
  }

  .btn-group {
    flex-wrap: wrap;
    gap: 6px;
  }

  .chart-canvas {
    height: 220px;
  }
}