body {
  background-color: #f8fafc;
}
.copy-btn {
  transition: all 0.2s;
}
.copy-btn:active {
  transform: scale(0.95);
}
.copy-btn.copied {
  background-color: #22c55e !important;
}
.spinner {
  border: 3px solid #e5e7eb;
  border-top: 3px solid #3b82f6;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}