:root{
--duration-instant:80ms;
--duration-fast:140ms;
--duration-base:220ms;
--duration-slow:340ms;
--duration-slower:520ms;

--ease-standard:cubic-bezier(.32,.72,.35,1);
--ease-out:cubic-bezier(.16,1,.3,1);
--ease-in:cubic-bezier(.55,0,1,.45);
--ease-bounce:cubic-bezier(.34,1.56,.64,1); /* gentle overshoot — buttons, chips, bubbles */

--transition-control:background-color var(--duration-fast) var(--ease-standard),color var(--duration-fast) var(--ease-standard),border-color var(--duration-fast) var(--ease-standard),box-shadow var(--duration-fast) var(--ease-standard),transform var(--duration-fast) var(--ease-standard);
--lift-hover:translateY(-2px);
--press-active:translateY(1px) scale(.985);
}