Single-Select Dropdown

<!--
  Exactly one row is aria-checked at a time via role="menuitemradio", and picking
  a new one closes the menu - single-select is a decision, not an accumulation.
  The trigger shows the current value so the answer is visible without opening.
-->
<div class="relative inline-block">
  <button type="button" aria-haspopup="menu" aria-expanded="true" aria-controls="rd-menu" class="inline-flex items-center gap-1.5 rounded-lg border border-gray-300 bg-white px-3.5 py-2 text-sm font-semibold text-gray-700 hover:bg-gray-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-600 focus-visible:ring-offset-2 focus-visible:ring-offset-white dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 dark:hover:bg-gray-800 dark:focus-visible:ring-blue-400 dark:focus-visible:ring-offset-gray-900">
    <span class="text-gray-500 dark:text-gray-400">Priority:</span>
    Medium
    <svg class="h-4 w-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" focusable="false"><path d="m6 9 6 6 6-6" /></svg>
  </button>

  <ul id="rd-menu" role="menu" aria-label="Priority" class="absolute left-0 top-[calc(100%+0.375rem)] z-20 min-w-48 max-w-[calc(100vw-2rem)] rounded-xl border border-gray-200 bg-white p-1 shadow-lg dark:border-gray-700 dark:bg-gray-900">
    <li role="none">
      <button type="button" role="menuitemradio" aria-checked="false" class="flex w-full items-center gap-2.5 rounded-md px-3 py-2 text-left text-sm text-gray-700 hover:bg-gray-100 hover:text-gray-900 focus-visible:bg-gray-100 focus-visible:text-gray-900 focus-visible:outline-none dark:text-gray-300 dark:hover:bg-gray-800 dark:hover:text-gray-100 dark:focus-visible:bg-gray-800 dark:focus-visible:text-gray-100">
        <span aria-hidden="true" class="flex h-4 w-4 flex-none items-center justify-center"></span>
        Low
      </button>
    </li>
    <li role="none">
      <button type="button" role="menuitemradio" aria-checked="true" class="flex w-full items-center gap-2.5 rounded-md px-3 py-2 text-left text-sm text-gray-700 hover:bg-gray-100 hover:text-gray-900 focus-visible:bg-gray-100 focus-visible:text-gray-900 focus-visible:outline-none dark:text-gray-300 dark:hover:bg-gray-800 dark:hover:text-gray-100 dark:focus-visible:bg-gray-800 dark:focus-visible:text-gray-100">
        <span aria-hidden="true" class="flex h-4 w-4 flex-none items-center justify-center">
          <svg class="h-4 w-4 text-blue-600 dark:text-blue-400" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6 9 17l-5-5" /></svg>
        </span>
        Medium
      </button>
    </li>
    <li role="none">
      <button type="button" role="menuitemradio" aria-checked="false" class="flex w-full items-center gap-2.5 rounded-md px-3 py-2 text-left text-sm text-gray-700 hover:bg-gray-100 hover:text-gray-900 focus-visible:bg-gray-100 focus-visible:text-gray-900 focus-visible:outline-none dark:text-gray-300 dark:hover:bg-gray-800 dark:hover:text-gray-100 dark:focus-visible:bg-gray-800 dark:focus-visible:text-gray-100">
        <span aria-hidden="true" class="flex h-4 w-4 flex-none items-center justify-center"></span>
        High
      </button>
    </li>
  </ul>
</div>