@layer atoms {
  .spinner {
    display: inline-block;
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spinner-spin 0.8s linear infinite;
  }
  @keyframes spinner-spin { to { transform: rotate(360deg); } }
}