/* ============================================================================ Dark-mode token remap for preview cards. Activated by `data-theme="dark"` on (or ) — the floating theme toggle injected by `_theme-toggle.js` flips this attribute. Strategy mirrors `ui_kits/cos-library/dark-mode.css`: • Re-map the neutral scale + semantic surface tokens for a deep navy palette so anything using `var(--color-bg-surface)`, `var(--color-fg-default)`, etc. automatically reads on dark. • Brand primary/semantic hues stay close to their light values for recognisability; their *_50 / *_100 tints collapse to translucent overlays so they read on the dark surface. • Patch raw `white`-literal rules in preview-local stylesheets (`_card.css`, per-card