fixes on search not found logic and code clean up using arrow functions

[rubanero14]

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[!IMPORTANT] Fixes 'Search not found' logic and refactors code using arrow functions, with UI enhancements in CSS.

• Behavior:
  • Fixes logic for 'Search not found' state in script.js and script_socials.js to correctly display a message when no results match the search query.
• Code Refactor:
  • Refactors JavaScript functions in script.js and script_socials.js to use arrow functions for better readability and performance.
• UI Enhancements:
  • Updates CSS in style.css to improve styling for 'Search not found' state, ensuring consistent text color and layout.

^{This description was created by for 83425240632dfd6d20f7f00b4f929a398a9d9222. It will automatically update as commits are pushed.}