You are a genius! How did you come up with this idea?
'Genio' = GE-nio, two syllables. 'Venuta' = ve-NU-ta.
Use this as an enthusiastic, hyperbolic compliment for a brilliant idea or solution. Italians use 'genio' more freely than English speakers use 'genius' — it can refer to exceptional cleverness in any specific instance.
'Genio' (genius) — Italy produced more recognised geniuses per capita than perhaps any other country (da Vinci, Galileo, Michelangelo). Using it colloquially for someone who has a clever idea is affectionate hyperbole. 'Come ti è venuta?' = 'how did it come to you?'
Sei troppo in gamba!
You are too clever/capable!
'In gamba' is a very Italian informal expression for being smart and capable
Non avevo mai pensato a questo. Brillante!
I had never thought of this. Brilliant!
Novelty of the idea emphasised
Mi hai salvato/a con questa idea.
You saved me with this idea.
The practical impact of their brilliance
Italy's cultural DNA is deeply associated with creative genius. The Italian Renaissance produced the greatest concentration of artistic genius in human history. The country's self-image includes the belief in Italian creative superiority — 'l'arte di arrangiarsi' (the art of finding creative solutions) is considered a specifically Italian talent.