Dark mode fixes (#11182)

* add transparent home illustration

* add transparent home icons

closes #11175

* fix onboarding bar bg on dark mode

closes #11174

Author: a-hariti

src/components/onboarding/index.tsx

@@ -212,7 +212,7 @@ export function OnboardingOptionButtons({
   }, [options, touchedOptions]);
 
   return (
-    <div className="flex flex-wrap gap-3 py-2 bg-[var(--white-a3)] sticky top-[80px] z-[4] shadow-[var(--shadow-6)] transition">
+    <div className="flex flex-wrap gap-3 py-2 bg-[var(--white)] dark:bg-[var(--gray-1)]  sticky top-[80px] z-[4] shadow-[var(--shadow-6)] transition">
       {options.map(option => (
         <Button
           variant="surface"