I've added a fully functional "Add Post" feature to CryptoGazette with the following enhancements:

New Features Added:

Floating Action Button (FAB)

• Blue circular button with a plus icon positioned at bottom-right
• Fixed positioning that stays visible while scrolling
• Mobile-optimized size and placement

Post Creation Modal

• Mobile-friendly dialog that opens when FAB is clicked
• Responsive design with proper spacing and scrolling
• Form validation - requires title, content, and company name

Post Form Fields

• Company/Source Name - for attribution
• Category Selection - dropdown with all available categories
• Title Input - for the post headline
• Content Textarea - for the main post content
• Optional Image URL - users can add images via URL
• Publish Button - disabled until required fields are filled

Real-time Functionality

• Instant posting - new posts appear immediately at the top of the feed
• Dynamic timestamps - shows "Just now" for new posts
• State management - posts persist during the session
• Form reset - clears form after successful submission

Mobile Optimizations

• Touch-friendly button sizes and spacing
• Keyboard-friendly form inputs
• Proper modal sizing for mobile screens
• Smooth interactions with proper loading states

Now users can easily share their crypto insights, news, and tips with the global community. The posts integrate seamlessly with the existing feed and maintain the same professional appearance and functionality as the original content.