body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: #f4f6f9;
}

.btn-lg {
  padding: 12px 16px;
  font-size: 1rem;
}

.input-group .btn {
  z-index: 0;
}

.table th {
  font-weight: 600;
  color: #495057;
  border-bottom-width: 1px;
}

.table td, .table th {
  padding: 10px 8px;
  vertical-align: middle;
}

.table-responsive {
  max-height: 400px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.btn-action {
  padding: 3px 7px;
  font-size: 0.75rem;
  border-radius: 4px;
}

/* KHUNG QUÉT BARCODE CAMERA */
#reader {
  width: 100% !important;
  min-height: 250px;
  background-color: #000;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}

#reader video {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover;
  border-radius: 12px;
}

.spin-anim {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}