feat: Implement blue theme with modern design

- Add Inter font from Google Fonts for modern typography
- Implement blue theme from shadcn.com (primary: blue)
- Add beautiful hero header with car icon
- Create Separator component for visual division
- Increase card padding (p-8) for better breathing room
- Larger card titles (text-2xl) for better hierarchy
- Improved spacing throughout (gap-8, py-12, etc.)
- Blue primary color (#3B82F6) with proper foregrounds
- Professional, modern look matching shadcn.com aesthetic

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "@radix-ui/react-separator": "^1.1.7"
+  }
+}