Two fixes in one — the immediate layout bug from the screenshot (timeline
sliding into column 1 with controls eating ~80% of the viewport) and
the architectural rule that all zebra page layout uses grid.
Layout bug (was: when cameras-col gets .hidden + the global .hidden
utility's display:none !important, the grid auto-placement promoted
.timeline into column 1 and .controls into column 2 → controls took
the 1fr middle track). Fix:
- explicit grid-column: 1/2/3 on cameras-col / timeline / controls so
each child stays in its assigned column regardless of siblings going
display:none
- .cameras-col uses 'display: grid !important' to override the global
.hidden util, then only its content (h2 + #cameras) goes display:none
via separate selectors when the .hidden class is present
- controls track clamped to min(360px, 50vw) so a wide window can't
let the side panel eat the screen-share area
Grid-only refactor:
- every flex container converted: .timeline, .cameras-col, .game-tabs,
.screen-tile, .screen-meta, .tap-play, .camera-tile, .row,
.mod-actions, .invite-banner, .invite-actions, .notice-banner
- chat.html + zebra-audio.html same treatment (.row, .field-row,
.share-box .copy-row, the inline H2 style, .mode-toggle, .dot)
- inline 'style=flex:1' on inputs/meters in chat.html replaced with
'style=width:100%'
- now zero 'display: flex' / 'inline-flex' across all five zebra pages
- CLAUDE.md documents the grid-only rule under web-page authoring