<footer class="page-footer">
  <span>quire v{{ self.version() }}</span>
  <button class="dark-toggle" @click="toggleDark()" :aria-label="darkMode ? 'switch to light' : 'switch to dark'" title="toggle dark mode">
    <span x-show="!darkMode">◐</span><span x-show="darkMode">◑</span>
  </button>
</footer>