The menu was appearing instantly without animation because the overflow
property was changing from 'hidden' to 'auto' on hover, which disrupted
the max-height transition.
Fix: Keep overflow-y: auto consistent at all times. This allows the
max-height animation to work smoothly from 0 to calc(100vh - 50px),
creating a smooth top-to-bottom expansion effect.
juanatsap
26e6ec14c0