refactor(ui): update button and input components to use brand-orange styles, enhancing UI consistency across the application

app/onboarding/page.tsx

@@ -95,7 +95,7 @@ export default function OnboardingPage() {
           <div>
             <Button
               type="submit"
-              className="w-full flex justify-center py-2 px-4 border border-transparent text-sm font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
+              className="w-full"
             >
               Create Organization
             </Button>