fix: update dark theme SCSS variables (#2546)

.changeset/fix-border-color-translucent-dark.md

@@ -0,0 +1,5 @@
+---
+"@tabler/core": patch
+---
+
+Updated `$border-color-translucent-dark` from `rgba(72, 110, 149, 0.14)` to `rgba(128, 150, 172, 0.2)` to improve visibility of form checkboxes and other form elements in dark mode.

core/scss/_variables-dark.scss

@@ -6,7 +6,7 @@
 $darken-dark: color.adjust($dark, $lightness: -2%) !default;
 $lighten-dark: color.adjust($dark, $lightness: 2%) !default;
 $border-color-dark: color.adjust($dark, $lightness: 8%) !default;
-$border-color-translucent-dark: rgba(72, 110, 149, 0.14) !default;
+$border-color-translucent-dark: rgba(128, 150, 172, 0.2) !default;
 $border-dark-color-dark: color.adjust($dark, $lightness: 4%) !default;
 $border-active-color-dark: color.adjust($dark, $lightness: 12%) !default;
 

core/scss/ui/forms/_form-check.scss

@@ -82,9 +82,4 @@ Form switch
   .form-check-label {
     padding-top: 0.125rem;
   }
-}
-
-/*Correction of Form-check position*/
-.form-check-input:checked {
-  border: none;
-}
+}