Drop zone — active
The same component, state=Active. Solid accent border (sky-blue, the
linear-keyframe color — visually consistent with the editor's "active"
language across the app). Background tint shifts to the same sky at low
alpha. Glyph picks up the accent.
The transform-scale (1.005) is intentional — small enough not to feel
animated-for-its-own-sake, big enough to confirm the drag is recognized
under fast cursor motion.
Headline + subtext swap to "Release to import" / "Will open in the editor" so users get a confirmation of what's about to happen before they let go.