Complex, detailed, or sophisticated.
Intricate, fancy, flashy, or showy.
to develop in detail or complexity
(sometimes followed by on or upon, and then the object of the preposition) to expand/enlarge in detail
Complicated, especially of complex technology.
Of a person: having obtained worldly experience, and lacking naiveté; cosmopolitan, worldly-wise.
Of art or other things: appealing to the tastes of an intellectual or sophisticated (sense 1) person; cerebral; also, cultured, elegant, refined.