feat: improve editor layout and control organization

[YLaxmikanth]

Description

Improves the editor layout and control organization to create a cleaner and more intuitive editing experience while preserving all existing functionality.

Changes made

• Made the video preview area more visually prominent

• Improved spacing and alignment throughout the editor

• Reorganized controls into clearer sections:

  • Core edits
  • Output setup

• Preserved existing functionality:

  • Preset selection
  • Framing controls
  • Recommended preset suggestions

• Improved responsive behavior for smaller screens

• Enhanced visual hierarchy with clearer grouping and card structure

Related Issue

Closes #901

Type of Contribution

• Bug fix
• New feature
• Documentation update
• Refactor
• GSSoC contribution

Participant Info

• GitHub username: YLaxmikanth
• Contribution level (Beginner/Intermediate/Advanced): Intermediate

Checklist

• I have read the contribution guidelines
• My changes follow the project structure
• I have tested my changes in Chrome, Firefox, and Safari
• bun run lint passes (no ESLint errors)
• bunx tsc --noEmit passes (no TypeScript errors)
• New interactive elements have aria-label / accessible names
• No console.log statements left in
• This PR is related to a valid issue
• Screen recording attached above

[vercel]

@YLaxmikanth is attempting to deploy a commit to the magic-peach1's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

✅ PR Format Check Passed — @YLaxmikanth

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, @YLaxmikanth!

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

🟠 GSSoC'26 PR detected — thanks for contributing under GirlScript Summer of Code 2026!

What happens next

1. 🤖 Automated checks — build & TypeScript typecheck will run automatically
2. ✅ Vercel preview — a preview deployment will be created (requires maintainer authorization for fork PRs)
3. 👀 Code review — a maintainer will review your changes
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
• ⭐ Star the repo to support the project!

Happy coding! 🎉