Full dark theme with custom colors, inverted backgrounds, and auto system preference detection.
The dark theme overrides all CSS custom properties with dark variants. Also supports automatic activation via prefers-color-scheme: dark.
@media<!-- Link the theme CSS -->
<link href="theme-dark.css"
rel="stylesheet">
<!-- Apply to form -->
<form data-ev-form
data-ev-theme="dark">
...
</form>