@layer controls {

  button,
  .button {
    display: inline-block;
    font: inherit;
    font-size: 12px;
    color: var(--color-ink);
    text-decoration: none;
    background: color-mix(in oklch, var(--color-surface), var(--color-ink) 12%);
    border: 1px solid var(--color-edge);
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;

    &:hover {
      background: color-mix(in oklch, var(--color-surface), var(--color-ink) 20%);
    }

    &[aria-pressed="true"],
    &.button--primary {
      background: var(--color-primary);
      color: var(--color-on-primary);
    }

    &.button--primary:hover {
      background: color-mix(in oklch, var(--color-primary), var(--white) 12%);
    }

    &.button--danger {
      background: var(--color-danger);
      color: var(--white);
    }

    &.button--danger:hover {
      background: color-mix(in oklch, var(--color-danger), var(--white) 12%);
    }

    &:disabled {
      opacity: 0.4;
      cursor: default;
    }
  }

  /* button_to wraps its button in a form; keep it inline with neighbours. */
  .button_to {
    display: inline;
  }
}