/* Paint the shell color the instant the theme is stamped, BEFORE the app stylesheet arrives:
   browsers (Firefox especially) can paint a frame from the OS color-scheme in that gap, which
   flashes white on a dark-themed page (or the reverse) on hard refresh. Values mirror
   dashboard.css --shell in each theme. Served from public/ so the CSP stays style-src 'self'. */
html { background: #fafafa; }
html[data-theme='dark'] { background: #08090b; }