Description

This issue tracks the first iteration of refactoring the codebase to improve structure, maintainability, and collaboration.

• CSS has been modularized successfully.

• JavaScript has been reorganized to remove AI-generated clutter and improve clarity, but it still requires further modularization (especially event and action logic).

Goals

• Modularize CSS into clean, reusable files.

• Clean up and partially reorganize JavaScript structure.

• Improve readability and developer experience.

• Lay the foundation for a second refactor focused on full JS modularization.