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/* ============================================================
* rustio-admin / layout / shell
*
* Page-level flex shell: banner → topbar → (sidebar + main) →
* footer. Layout uses flex (not grid) so an absent sidebar (login,
* forbidden, error, public chrome) doesn't leave a 240px ghost
* column squeezing the main content.
*
* Mobile-first off-canvas overrides live in layout/responsive.css.
* ============================================================ */
}
}
}
/* Layout uses flex, not grid, so an absent sidebar (login page,
* forbidden, error, public chrome) doesn't leave a 240px ghost
* column squeezing the main content. With sidebar: row of two
* children, sidebar is fixed-width. Without: main takes 100%. */
}
}