### Apple Glass Theme Design - **Modern Glass Effects**: Translucent BlurView components with authentic Apple Glass aesthetics - **Dynamic Dual Themes**: Blue and Green Apple Glass themes with runtime switching - **Persistent Theme Storage**: User theme preferences saved with AsyncStorage - **Authentic Typography**: SF Pro Display/Roboto font stack - **Professional Shadows**: Layered shadow effects for depth and visual hierarchy ### User Interface Refinements - **Borderless Buttons**: Removed black borders for authentic glass effect - **Slimmer State Selection**: Elegant, refined button padding - **Enhanced Shadows**: Improved button visibility and depth - **Optimized Spacing**: Reduced top spacing in question screens - **Full-Screen Settings**: Modal settings screen with slide animation ### Professional Error Handling & Logging - **Firebase Integration**: Automatic error logging to Firestore - **Retry Mechanisms**: Network error recovery with exponential backoff - **Error Queueing**: Offline error storage and batch sending - **User Notifications**: Smart alerts for critical errors only - **Safe Execution**: Graceful degradation with fallback values - **Comprehensive Categories**: 9 error types (NETWORK, STORAGE, THEME, etc.) ### Quiz Features - **300+ Federal Questions**: Complete German citizenship test question bank - **16 State-Specific Modules**: Bayern, Berlin, Hamburg, and 13 other states - **Multi-Language Support**: German, English, Turkish, Farsi, Russian, Hindi - **Speech Synthesis**: Text-to-speech in all supported languages - **Detailed Results**: Question-by-question review with correct answers - **Progress Tracking**: Real-time score tracking and history

~Ersin Akyuz