:root{
--shadow-none:none;
--shadow-1:0 1px 2px rgba(14,29,51,.06),0 1px 1px rgba(14,29,51,.04);
--shadow-2:0 2px 6px rgba(14,29,51,.08),0 1px 2px rgba(14,29,51,.05);
--shadow-3:0 8px 24px rgba(14,29,51,.10),0 2px 6px rgba(14,29,51,.06);
--shadow-4:0 20px 48px rgba(14,29,51,.14),0 4px 12px rgba(14,29,51,.08);
--shadow-focus:0 0 0 3px rgba(31,62,110,.22);
--shadow-focus-accent:0 0 0 3px rgba(56,179,75,.28);
/* Terminal panels sit flat: separation comes from a 1px border, not shadow */
--shadow-terminal:inset 0 0 0 1px var(--term-border);
}