feat: Complete UI/UX Overhaul & Enhanced File Support

[CodeByRachit]

feat: Complete UI/UX Overhaul & Enhanced File Support

📝 Summary

This PR introduces a comprehensive UI/UX modernization across the application, implementing a new "Glider" tab navigation system, advanced animations, and improved file handling for non-image formats. It aligns the interface with modern design principles (Glassmorphism, Micro-interactions) and ensures full responsiveness.

🚀 Key Changes

🎨 Frontend & UI

• Navigation: * Implemented a new "Glider" tab navigation system with sliding animations.
  • Fixed layout alignment issues between navigation tabs and the theme toggle.
• Welcome Page: * Added a dynamic "Rainbow Gradient" CTA button with animated border effects.
• Upload Interface:
  • Glassmorphism: Added a glass-effect card with a "float-up" entry animation.
  • Smart Previews: Implemented logic to display image previews for photos and a dedicated "File Card" with extension badges for non-image files (PDF, ZIP, DOCX, etc.).
  • Interactions: Added a custom animated "Delete Bin" button for clearing selections.
• Gallery Interface:
  • Animations: Added a staggered "waterfall" entrance animation for evidence cards.
  • Download: Integrated a compact, animated "Download" button on every card.
  • Visuals: Fixed object-fit issues to ensure logos and documents are fully visible without cropping.
• Global Effects:
  • Dark Mode: Implemented a "Circular Ripple" transition effect when toggling themes.
  • Alerts: Added auto-dismiss logic (10s) for flash messages with smooth fade-out transitions.

⚙️ Backend

• File Support: Updated app.py to support ingestion of all file types (removed image-only restriction).
• Processing: Added logic to skip metadata scrubbing for non-image files while ensuring they are still securely hashed and vaulted.

🧪 Testing Instructions

1. Navigation: Click between Home, Upload, and Gallery to verify the sliding "Glider" animation.
2. File Upload: * Upload a PDF to verify the new "File Card" preview appears.
   • Upload an Image to verify the standard photo preview appears.
3. Theme Toggle: Switch between Dark/Light mode to verify the circular ripple effect.
4. Gallery: Check the gallery to ensure images are not cropped and the new "Download" button works for all file types.
5. Alerts: Perform an action (like uploading) and wait 10 seconds to verify the success message fades out automatically.

🎥 Demo

Screen.Recording.2026-01-18.at.5.13.54.PM.mp4

[gemini-code-assist]

Summary of Changes

Hello @CodeByRachit, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request delivers a significant upgrade to the application's user experience by implementing a modern, animated, and responsive UI across all key pages. Concurrently, it expands the system's capabilities to securely ingest and manage a wider array of file formats, ensuring data integrity through hashing while intelligently processing different file types.

Highlights

• Complete UI/UX Overhaul: The application's user interface has been modernized with a new 'Glider' tab navigation system, advanced animations, and a responsive design, incorporating elements like Glassmorphism and micro-interactions.
• Enhanced File Support: The backend now supports the ingestion of all file types, removing the previous image-only restriction. Non-image files are securely hashed and vaulted, while image files continue to have metadata scrubbed.
• Dynamic Previews and Interactions: The upload interface features smart previews, displaying actual images for photo files and dedicated 'File Cards' with extension badges for other document types. A custom animated 'Delete Bin' button is also included for clearing selections.
• Gallery Enhancements: The gallery interface now includes a staggered 'waterfall' entrance animation for evidence cards, a compact animated 'Download' button on each card, and fixes for object-fit issues to ensure full visibility of logos and documents.
• Global UI Effects: Theme toggling now features a 'Circular Ripple' transition effect, and flash messages are equipped with auto-dismiss logic (10s) and smooth fade-out transitions for improved user feedback.

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[gemini-code-assist]

Code Review

This pull request introduces a significant and impressive UI/UX overhaul, along with backend enhancements for broader file type support. The new design is modern and the animations add a great touch. However, I've identified a few critical security and stability issues that need to be addressed before merging. These include a missing dependency, lack of file type validation on upload, and a hardcoded secret key. I've also noted some high-severity performance concerns with image processing and several medium-severity suggestions to improve maintainability, accessibility, and code quality. Please review the detailed comments below.