In a suit designed for a hot country (7)
I believe the answer is:
tunisia
'hot country' is the definition.
'Tunisia' can be an answer for 'country' (Tunisia is an example). I am not sure about the 'hot' bit.
'in a suit designed' is the wordplay.
'designed' indicates anagramming the letters (designed with the letters).
'in'+'a'+'suit'='inasuit'
'inasuit' anagrammed gives 'TUNISIA'.
'for a' acts as a link.
Can you help me to learn more?
(Other definitions for tunisia that I've seen before include "country-style" , "Somewhere in North Africa" , "Land" , "Country where Carthage is found" , "As Inuit visits there in North Africa" .)