layouts/_default/baseof.html


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<!DOCTYPE html>
<html lang="{{ or site.Language.LanguageCode site.Language.Lang }}"
  dir="{{ or site.Language.LanguageDirection `ltr` }}">

  <head>
    {{ partial "head.html" . }}
  </head>

  {{ $theme := "auto"}}

  {{ with .Param "theme" }}
  {{ $theme = .}}
  {{ end }}

  <body class="{{ $theme }}">

    <div class="content">
      <header>
        {{ partial "header.html" . }}
      </header>

      <main class="main">
        {{ block "main" . }}{{ end }}
      </main>
    </div>

    <footer>
      {{ partial "footer.html" . }}
    </footer>

    {{ if .Param "math" }}
    {{ partialCached "math.html" . }}
    {{ end }}

  </body>

  <script>

  function isAuto() {
    return document.body.classList.contains("auto");
  }

  function setTheme() {
    if (!isAuto()) {
      return
    }

    document.body.classList.remove("auto");
    let cls = "light";
    if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
      cls = "dark";
    }

    document.body.classList.add(cls);
  }

  function invertBody() {
    document.body.classList.toggle("dark");
    document.body.classList.toggle("light");
  }

  if (isAuto()) {
    window.matchMedia('(prefers-color-scheme: dark)').addListener(invertBody);
  }

  setTheme();

</script>

</html>