How little Germany knew about Pearl Harbor

How much did Germany know about Pearl Harbor before the attack?

Very little; Germany expected Japan to distract the United States but did not anticipate the Allied Europe-first strategy.

Hitler appears to have been surprised by Japan's entry into the war rather than involved in detailed joint planning. German leaders nevertheless welcomed the prospect that a Pacific conflict might absorb American attention. That expectation failed when the United States adopted a Europe-first strategy, reinforced by Churchill's argument that defeating Germany would free Allied resources for the Far East. The exchange separates Axis political alignment from genuine strategic coordination.