Navbar is sticky top-0 z-50. On scroll >8px: bg opacity drops to 80%
and backdrop-blur-md activates with a subtle shadow. Transitions on
background-color and backdrop-filter (300ms). Smooth scrolling via
html { scroll-behavior: smooth } in globals.css.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Werkzeuge→#werkzeuge, Blog→#blog, Über Björn→#ueber-bjoern.
Shop remains /shop (no matching section). Added matching id attributes
to Tools, Blog and About section root elements.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Marco