Implement Fully Responsive Layout for Calculator UI #1
Description
Overview
Improve the calculator's layout and styling to ensure a seamless, user-friendly experience across all device sizes (desktop, tablet, mobile).
Goals
- Use CSS Grid and Flexbox to adapt the layout responsively.
- Buttons and panels should scale and rearrange for mobile, tablet, and desktop.
- Ensure all features are accessible and usable on touch devices.
- Optimize font sizes, button hit-areas, and spacing for smaller screens.
- Test and polish transitions (e.g., history, memory, keypad) so nothing overlaps or clips.
- Maintain visual consistency across all supported themes.
- Add/Improve media queries as needed.
- Test keyboard navigation and focus visibility on all screen sizes.
Acceptance Criteria
- Calculator works and looks good from 320px wide up to wide desktops.
- No UI elements are clipped or overlapping at any breakpoint.
- Calculator remains fully accessible on all devices.
- No regressions in existing features.
Additional Context
This is the first upgrade as part of a larger initiative to modernize and expand the calculator's capabilities.
Future improvements will build on this foundation.