Premium Dark Navbar UI Enhancement & Global Theme System Refactor

[jikrana1]

📋 Pull Request — Premium Dark Navbar UI Enhancement & Global Theme System Refactor

🔗 Related Issue

Closes #47 — Premium Dark Navbar UI Enhancement & Global Theme System Refactor

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📝 Summary

This PR improves the overall UI/UX consistency of the SmartPark application by redesigning the navbar with a more premium dark appearance and integrating a centralized theme management system using ThemeContext.

✅ Changes Made

• Refactored theme handling to use ThemeContext globally across pages.
• Removed duplicate local theme states and replaced them with shared context-based theme management.
• Improved navbar dark mode appearance with premium dark backgrounds (#141414 / #191919) and enhanced blur effects.
• Added smoother transitions and better visual consistency between the HomePage and Navbar.
• Improved hover states, gradients, shadows, and active navigation styles.
• Enhanced mobile navigation UI and theme toggle behavior.
• Fixed inconsistent navbar colors caused by transparency and backdrop blur combinations.
• Cleaned up legacy commented theme logic for better maintainability.
• Improved responsiveness and modern glassmorphism styling.

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🔘 Type of Change

• Bug fix
• New feature
• Documentation update
• Refactoring

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✅ Checklist

• Code follows project style
• Tested locally
• Updated documentation

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