body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', Arial, sans-serif;
}

.btn-primary {
  transition: all 0.15s ease-in-out;
}
.btn-primary:active {
  transform: scale(0.97);
}

.spinner {
  border: 3px solid #e5e7eb;
  border-top-color: #4f46e5;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}