:root { --stagebar-gap: 8px; }
#stage-bar, .stage-bar, .control-bar { display:flex; gap:var(--stagebar-gap); align-items:stretch; width:100%; max-width:100%; min-width:0; }
#stage-bar > *, .stage-bar > *, .control-bar > * { flex:1 1 0; min-width:0; }
#stage-bar select, .stage-bar select, .control-bar select,
#stage-bar .select, .stage-bar .select, .control-bar .select { width:100%; max-width:100%; min-width:0; box-sizing:border-box; }
html.stagebar-ready #stage-bar, html.stagebar-ready .stage-bar, html.stagebar-ready .control-bar { display:flex; }