light/dark mode switch improvements and bugfix in search index (#29)

bb1950328

27.33.2021 a03f248319a982926788c5a72356eec408dc66fd

 assets/sass/_variables.sass

@@ -32,6 +32,8 @@
      &_choice
        &::after
          transform: translateX(1.75rem) scale(1.67)
      &_icon
        transform: translateX(1.75rem) translateY(-50%)

  &.dark:not([data-mode="light"])
    @media (prefers-color-scheme: dark)