Description

Redesign timeline UI with modern icon-based controls.

Type of Change

• New feature (non-breaking change which adds functionality)

Changes Made

• Replace text buttons with SVG icons
• Group controls visually with styled containers
• Style numeric inputs (removed native spinners)
• Play button with play/pause icon toggle
• Grid/guide control buttons with icons
• Guide mode hint chip
• Custom scrollbar styling
• Consistent button styling

Testing

• Tested in Firefox

Test Configuration:

• OS: Windows 10
• Browser: Firefox

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have tested my changes thoroughly

Related Issues

N/A