<!-- theme switcher -->
{{ $class := .Class }}
{{ if site.Params.theme_switcher }}
  <div class="theme-switcher {{ $class }}">
    <input id="theme-switcher" data-theme-switcher type="checkbox" />
    <label for="theme-switcher">
      <span class="sr-only">theme switcher</span>
      <span>
        <!-- sun -->
        <svg
          class="absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2 z-10 opacity-100 dark:opacity-0"
          viewBox="0 0 56 56"
          fill="#fff"
          height="16"
          width="16">
          <path
            d="M30 4.6c0-1-.9-2-2-2a2 2 0 0 0-2 2v5c0 1 .9 2 2 2s2-1 2-2Zm9.6 9a2 2 0 0 0 0 2.8c.8.8 2 .8 2.9 0L46 13a2 2 0 0 0 0-2.9 2 2 0 0 0-3 0Zm-26 2.8c.7.8 2 .8 2.8 0 .8-.7.8-2 0-2.9L13 10c-.7-.7-2-.8-2.9 0-.7.8-.7 2.1 0 3ZM28 16a12 12 0 0 0-12 12 12 12 0 0 0 12 12 12 12 0 0 0 12-12 12 12 0 0 0-12-12Zm23.3 14c1.1 0 2-.9 2-2s-.9-2-2-2h-4.9a2 2 0 0 0-2 2c0 1.1 1 2 2 2ZM4.7 26a2 2 0 0 0-2 2c0 1.1.9 2 2 2h4.9c1 0 2-.9 2-2s-1-2-2-2Zm37.8 13.6a2 2 0 0 0-3 0 2 2 0 0 0 0 2.9l3.6 3.5a2 2 0 0 0 2.9 0c.8-.8.8-2.1 0-3ZM10 43.1a2 2 0 0 0 0 2.9c.8.7 2.1.8 3 0l3.4-3.5c.8-.8.8-2.1 0-2.9-.8-.8-2-.8-2.9 0Zm20 3.4c0-1.1-.9-2-2-2a2 2 0 0 0-2 2v4.9c0 1 .9 2 2 2s2-1 2-2Z" />
        </svg>
        <!-- moon -->
        <svg
          class="absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2 z-10 opacity-0 dark:opacity-100"
          viewBox="0 0 24 24"
          fill="none"
          height="16"
          width="16">
          <path
            fill="#000"
            fill-rule="evenodd"
            clip-rule="evenodd"
            d="M8.2 2.2c1-.4 2 .6 1.6 1.5-1 3-.4 6.4 1.8 8.7a8.4 8.4 0 0 0 8.7 1.8c1-.3 2 .5 1.5 1.5v.1a10.3 10.3 0 0 1-9.4 6.2A10.3 10.3 0 0 1 3.2 6.7c1-2 2.9-3.5 4.9-4.4Z" />
        </svg>
      </span>
    </label>
  </div>

  <!-- theme switcher -->
  <script>
    var darkMode = {{if eq site.Params.theme_default "dark"}}true{{else}}false{{end}};

    {{ if eq site.Params.theme_default "system" }}
    if (window.matchMedia("(prefers-color-scheme: dark)").matches){darkMode = true}
    {{ end }}

    if (localStorage.getItem("theme") === "dark"){darkMode = true}
    else if (localStorage.getItem("theme") === "light"){darkMode = false}
    if (darkMode){document.documentElement.classList.toggle("dark")}
    var themeSwitch = document.querySelectorAll("[data-theme-switcher]");

    document.addEventListener("DOMContentLoaded", () => {
      [].forEach.call(themeSwitch, function (ts) {
        ts.checked = darkMode ? true : false;
        ts.addEventListener("click", () => {
          document.documentElement.classList.toggle("dark");
          localStorage.setItem(
            "theme",
            document.documentElement.classList.contains("dark") ? "dark" : "light"
          );
        });
      });
    });
  </script>
{{ end }}
