Statement
The site header shall support configurable scroll behavior modes — static (default), CSS sticky, and scroll-up (hides on scroll down, reveals on scroll up) — selectable via site configuration (HeaderConfig).
Rationale
Different site types need different header behaviors. Scroll-up maximizes content viewport on mobile while keeping nav accessible. Delivered by WP-C3 (D-C3-03).
Topics
Owner: component-system
Related: navigation
Applies To
- Header & Navigation DOC-00011
- Site Configuration DOC-00002