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// color-contrast() was introduced in Bootstrap 5.
// We include our own version for a few reasons:
// 1. Easily turn off warnings options(bslib.color_contrast_warnings=F)
// 2. Allow Bootstrap 3 & 4 to use color-contrast() in variable definitions
// 3. Allow Bootstrap 3 & 4 to use bs_get_contrast()
// Also note that color-contrast() lives in sass-utils since projects like Quarto
// and flexdashboard currently assume it exists there....
@import "../sass-utils/color-contrast.scss";
@function is-css-variable($x) {
@if (type-of($x) != string) {
@return false;
} @else {
@return str-slice($x, 1, 6) == 'var(--';
}
}
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