Add light/dark mode toggle to the preview #51
Merged
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Implements a light/dark mode toggle for the preview site. The CSS diff here is large because we need to switch how we style light and dark mode. You can't change media queries with JavaScript, but we want to default to using media queries to implement light and dark mode without requiring javascript. This PR switches to this syntax:
var(--light, light-mode-only-styles) var(--dark, dark-mode-only-styles)The
styles.cssstylesheet sets up these css variables based on media queries. While the syntax is a bit odd, this works without javascript and can easily be overwritten by the toggle