Build responsive layouts

Build responsive layouts for key screens so they behave across phone, tablet, and desktop. Deliver the dashboard, settings page, and item detail views at 360, 768, and 1440 widths. Define breakpoints, describe how navigation collapses, and show how cards reflow. Annotate any layout decisions that affect component behavior. Ready for handoff by Monday morning.

Before this goes to front-end, make the responsive behavior obvious: put the breakpoint rules at the top of each file, show before-and-after frames for key reflows, highlight any components that change interaction (e.g., hover to tap), and call out where performance or image assets will need to swap at smaller sizes.

User tests show the primary action disappears into a 'more' menu on small screens and people can't find it. I need a diagnosis and the best next move. Is this a layout oversight, a priority decision, or an interaction problem? Recommend the single change to test that will surface the action on mobile without breaking desktop.

For three releases we shipped with layout regressions and frontend had to do manual CSS fixes. Where are we losing predictability and what habit should I change so responsive behavior is reliable? Suggest one design-time practice and one naming or spacing convention to prevent these recurring fixes.