Why is there a な in this sentence?


I am translating the following sentence I found in my workbook.

> 美味しそう **な** 写真を見て、思わず[涎]{よだれ}が出た。

`美味しい` is an i-adjective, so why is there a `な`?




This isn't simply 美味しい, but 美味しそう. The そう suffix means 'appears to be', and it
takes な.

> When I saw a photo of delicious-looking food, I couldn't help but drool.




This isn't simply 美味しい, but 美味しそう. The そう suffix means 'appears to be', and it
takes な.

> When I saw a photo of delicious-looking food, I couldn't help but drool.

