/* Glassmorphism nav — pill-shaped links with a sliding indicator, layered on top of the existing nav/.nav-dropdown/.mob-nav/.theme-switch markup and JS (sertek-theme.js, sertek-auth.js). No HTML structure required beyond what every page already has. Tokens mirror the approved mockup (liquid-glass-nav prototype). This file is linked near the top of (right after sertek-theme.js), BEFORE each page's own large inline