Add comprehensive mobile-first adjustments across the UI: reorganize topbar actions and context in Layout.vue, make the navigation drawer mobile-friendly (new mobile class, bottom location, density and block-button behavior), and add many responsive CSS rules. Introduce safe-area variables and larger touch targets in global.css (44px buttons, icon sizes, nav item heights), plus additional responsive patterns in page-layouts.css and surface-patterns.css. Apply mobile breakpoints and spacing/stacking tweaks to Home, Login, Impressum and 404 pages to ensure CTAs, cards and forms behave well on <=960px and <=600px viewports. Document the responsive implementation standard in GUI/style.md and update codexInfo.md to note the mobile/usability changes. Changes are scoped to mobile breakpoints to avoid desktop regressions.
Introduce reusable global CSS modules and apply them across routes to centralize layout/surface patterns. Added GUI/src/styles/global/page-layouts.css and GUI/src/styles/global/surface-patterns.css and imported both in GUI/src/main.ts. Updated Layout.vue, Home.vue, 404NotFound.vue, Impressum.vue and authentication/Login.vue to use hoard-* utility classes (hoard-page, hoard-shell-grid, hoard-kicker, hoard-action-row, hoard-panel-gradient, etc.) and removed duplicated scoped styles. Also updated codexInfo.md to document the new CSS modules and provide usage guidance. This reduces per-page CSS duplication and standardizes gradients, spacing and page-shell behavior.
Jonas