refactor(contacts-footer-hero-section): remove placeholder text from input fields for cleaner UI

- Removed placeholder text from various input fields in ContactsStep, FooterStep, HeroStep, and SectionStep components to streamline the user interface.
- Updated MarketingForm to enhance form field handling and validation logic.
- Improved default values in useMarketingForm for better initial state management.

src/components/FormElements/InputGroup/index.tsx

@@ -100,9 +100,8 @@ const InputGroup = <T extends FieldValues>({
             })}
           className={cn(
             "w-full rounded-xl border border-stroke/70 bg-white/90 shadow-[0_1px_2px_rgba(16,24,40,0.04),0_8px_20px_rgba(16,24,40,0.04)] outline-none backdrop-blur-[1px] transition-all duration-200 focus:border-primary/70 focus:bg-white focus:shadow-[0_0_0_2px_rgba(59,130,246,0.14),0_10px_24px_rgba(59,130,246,0.08)] disabled:cursor-default disabled:bg-gray-2/70 data-[active=true]:border-primary/70 dark:border-dark-3/80 dark:bg-dark-2/85 dark:focus:border-primary/80 dark:focus:shadow-[0_0_0_2px_rgba(59,130,246,0.2),0_10px_24px_rgba(15,23,42,0.45)] dark:disabled:bg-dark dark:data-[active=true]:border-primary/80",
-            // Add error styles conditionally
             error &&
-              "border-red/80 focus:border-red focus:shadow-[0_0_0_2px_rgba(239,68,68,0.16),0_10px_24px_rgba(239,68,68,0.1)] dark:border-red/80 dark:focus:shadow-[0_0_0_2px_rgba(239,68,68,0.24),0_10px_24px_rgba(127,29,29,0.45)]",
+              "focus:border-red border-none focus:shadow-[0_0_0_2px_rgba(239,68,68,0.16),0_10px_24px_rgba(239,68,68,0.1)] dark:border-none",
             type === "file"
               ? getFileStyles(props.fileStyleVariant!)
               : "px-5.5 py-3 text-dark placeholder:text-dark-6 dark:text-white",
@@ -117,7 +116,7 @@ const InputGroup = <T extends FieldValues>({
       </div>
 
       {error && (
-        <p className="text-red mt-1.5 text-sm font-medium">
+        <p className="mt-1.5 text-sm font-medium text-error">
           {error.message as string}
         </p>
       )}