Remove duplicate colour rules for .nav__link and button in style.css

[DoyelMishra15]

🔁 Refactored .nav__link CSS rules by combining repeated :hover, :focus, and .active color declarations into one block.

🧹 Cleaned up redundant styles for buttons to make the CSS more maintainable.

🎯 Improves readability, maintainability, and avoids duplication.

Issue #265

Updated with further cleanup

[greptile-apps]

Greptile Summary

This PR refactors the CSS in styles.css to eliminate code duplication and improve maintainability. The changes focus on two main areas:

1. Navigation link styles: The original .nav__link styles that had separate declarations for :hover, :focus, and .active states (all setting the same color #2563eb) have been consolidated into a single combined selector. This reduces repetition from multiple individual rules to one unified declaration.

2. Button styles: The .btn-primary and .btn-secondary classes both had duplicate color: #fff declarations, which have been extracted into a combined selector to eliminate the redundancy.

The refactoring follows the DRY (Don't Repeat Yourself) principle, making the CSS more maintainable by ensuring that color values only need to be updated in one location rather than multiple places. The visual output remains identical while the underlying code structure becomes cleaner and more efficient. This type of CSS optimization is a common best practice in stylesheet maintenance and fits well with the project's focus on code quality and maintainability.

Confidence score: 3/5

• This PR is generally safe to merge but has one significant code cleanliness issue that should be addressed.
• The score is lowered because the PR leaves a large block of commented-out code (lines 143-184) instead of removing it completely, which goes against clean code practices and could cause confusion for future maintainers.
• The styles.css file needs attention to remove the commented-out code block before merging.

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