The appbar had grown to 11 flat links with no responsive behaviour, and overflowed below ~1100px. Nav is now 7 top-level entries: Inicio, Clientes, Pólizas, Propiedades, Reportes stay one click away, while the movement screens (Captura, Estado de cuenta, Chequera) and the admin screens (Catálogos, Usuarios, Operaciones) collapse into "Cobranza" and "Admin" dropdowns. Groups are ability-filtered and disappear entirely when the user can see none of their items, so VIEWER never renders an empty Admin menu. activeHref now scans the flattened link list, and a group trigger highlights while one of its children is current. Below 980px the nav collapses to a burger drawer that lists every group expanded, closing on navigation and on Escape. Text size is user-adjustable app-wide. Every font-size in globals.css is converted from px to rem (mechanically, 133 declarations) and the root size becomes calc(100% * var(--ui-scale)), so one variable on <html> rescales the whole UI. The preference persists in localStorage and is applied by a pre-hydration script in layout.tsx to avoid a flash at the default size; the Aa control lives in the appbar and, as a segmented row, in the drawer. Spacing stays in px by design, which is why 1.3 is the largest preset. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>