:root{
/* Print-derived, so shadows are sparse and hard — a paper lift, not a glow.
   Elevation belongs to the ribbon, the sticker badge and floating price tags only. */
--shadow-none:none;
--shadow-paper:2px 2px 0 rgba(39,39,51,0.14);
--shadow-lift:3px 3px 0 var(--pen-ink);          /* hard offset, no blur — sticker look */
--shadow-lift-blue:3px 3px 0 var(--pen-blue);
--shadow-soft:0 2px 8px rgba(39,39,51,0.14);     /* screen-only: dialogs, menus */
--shadow-inset-field:inset 0 1px 0 rgba(39,39,51,0.06);
--focus-ring:0 0 0 3px var(--blue-300);

/* Semantic */
--elevation-card:var(--shadow-none);
--elevation-card-raised:var(--shadow-paper);
--elevation-sticker:var(--shadow-lift);
--elevation-overlay:var(--shadow-soft);
}