:root{
--shadow-card:0 1px 2px rgba(15,17,21,0.04),0 2px 8px rgba(15,17,21,0.06);
--shadow-card-hover:0 4px 12px rgba(15,17,21,0.08),0 2px 4px rgba(15,17,21,0.05);
--shadow-popover:0 8px 24px rgba(15,17,21,0.12);
--shadow-brand-glow:0 12px 24px rgba(0,61,201,0.28);
--shadow-inset-border:inset 0 0 0 1px var(--border-subtle);
}