/* ─── Dark theme ───────────────────────────────────────────────────────────────
   Split out of site.css 2026-08-02. Everything here is scoped to
   [data-theme="dark"]; base styles stay in site.css.

   LOAD ORDER IS PART OF THE CONTRACT. _Layout links site.css, then every theme
   file, then themes/_shared.css. Theme rules carry an extra attribute selector,
   so they outrank base styles wherever they land - but do not reorder the links
   without re-reading _shared.css, which wins by POSITION rather than weight.

   The picker applies themes client-side with no reload (site.js), so every theme
   file ships on every page. Serving only the active theme would need the picker
   to fetch on demand first. */
/* Dark is the :root default (no palette overrides needed), but still needs the
   under-nav line turned off like Light - see the comment there. */
[data-theme="dark"] {
    --nav-gradient: transparent;
}