v1.0.2: Complete CSS refactoring with custom properties

- Introduced comprehensive CSS custom properties for colors, fonts, and transitions
- Eliminated 40+ hardcoded color values with centralized variables
- Consolidated duplicate font family definitions
- Removed redundant button styles and input styling
- Optimized theme system with consistent property usage
- Fixed accessibility issue with MIT license link
- Reduced code redundancy while maintaining full functionality
- All themes (auto/light/dark) now use unified variable system

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jmespath-playground",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "A React-based web application for testing JMESPath expressions against JSON data",
   "main": "index.js",
   "scripts": {