feat: improve UI styling for key sections

[Kokila-chandrakar]

Summary

Enhanced the UI styling for key sections in Reframe including:

• Improved File Upload section with glassmorphism and gradient buttons
• Enhanced Export Overlay with animated glow effects
• Redesigned Preset Selector cards with colorful gradients and hover animations
• Updated Footer styling with better hover interactions and modern visuals
• Improved overall spacing, responsiveness, and visual hierarchy

Changes Made

• Added gradient backgrounds and glow effects
• Improved hover and transition animations
• Enhanced active/selected states for preset buttons
• Added backdrop blur and glass-card styling
• Improved accessibility and responsiveness

Result

The UI now feels more modern, colorful, interactive, and visually engaging while maintaining Reframe’s clean minimal design.

close #1235

[vercel]

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[github-actions]

✅ PR Format Check Passed — @Kokila-chandrakar

Basic format checks passed. A maintainer will review your code changes.

This does not mean the PR is approved — it just means the format is correct.

[github-actions]

👋 Thanks for your PR, @Kokila-chandrakar!

Welcome to Reframe — a browser-based video editor built for everyone 🎬

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4. 🚀 Merge — once approved, your PR will be merged!

Quick checklist

• PR title follows Conventional Commits (e.g. feat: add dark mode)
• Linked the issue this PR closes (e.g. Closes #123)
• Tested the changes locally (bun run dev)
• Build passes (bun run build)

Useful links

• 📖 CONTRIBUTING.md
• 🐛 Open Issues
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Happy coding! 🎉

[Kokila-chandrakar]

Hi @magic-peach , could you please review and approve the pending workflows for this PR? The remaining checks are waiting for maintainer approval. Thank you!