I'll create a fully working, complete voice assistant with proper error handling, browser compatibility checks, and a polished user experience.

How to Use Your Voice Assistant

1. Tap the Microphone Button: Click the large microphone button in the center of the screen to start listening.
2. Speak Clearly: While the animated visualizer is active, speak your question or command clearly.
3. View Results: After you finish speaking, the assistant will process your input using OpenAI's GPT-4o model and display both what you said and the AI's response in a popup dialog.
4. Try Again: Close the dialog and tap the microphone button again to ask another question.

Features

• Browser Compatibility Check: Automatically detects if your browser supports speech recognition
• Visual Feedback: Animated voice visualizer shows when the assistant is listening
• Error Handling: Clear error messages if something goes wrong
• Responsive Design: Works on both mobile and desktop devices
• Accessibility: Proper ARIA labels and keyboard navigation support

Technical Details

This voice assistant uses:

• Web Speech API for voice recognition
• OpenAI's GPT-4o model for AI responses
• React hooks for state management
• Server Actions for API communication
• Tailwind CSS for styling

The application is now fully functional and ready to use with your OpenAI API key. Simply click the microphone button and start speaking!

I'll update the voice assistant to ensure it works across all browsers by adding a text input fallback and improving browser compatibility.

Cross-Browser Compatible Voice Assistant

I've updated the voice assistant to work in all browsers by adding:

1. Text Input Fallback: A complete text input mode for browsers that don't support speech recognition
2. Browser Detection: Improved detection of speech recognition support across different browsers
3. Easy Mode Switching: A toggle button to switch between voice and text input modes
4. Helpful Error Messages: Clear guidance when speech recognition isn't available
5. Mobile Optimization: Responsive design that works well on all device sizes

How to Use

Voice Input (Supported Browsers)

1. Chrome 33+, Edge 79+, Safari 14.1+ support voice recognition
2. Click the microphone button to start listening
3. Speak your question clearly
4. View the AI's response in the popup dialog

Text Input (All Browsers)

1. Click "Switch to text input" if voice isn't supported or if you prefer typing
2. Type your question in the text field
3. Press Enter or click the send button
4. View the AI's response in the popup dialog

Browser Compatibility

• Full Support (Voice + Text): Chrome, Edge, Safari (newer versions)
• Text-Only Support: Firefox, Internet Explorer, older browsers
• Mobile Support: Works on iOS and Android (voice support varies by browser)

The assistant now provides a seamless experience across all browsers and devices, automatically detecting capabilities and offering the appropriate input method. If speech recognition isn't available, it will suggest switching to text input mode.