This is the 10873rd most frequent Turkish word.
detaylarının
"Detaylarının" means "its details" or "the details of it."
Here, 'detaylarının' is used to specify the details belonging to the project, serving as a possessive genitive construction.
Projenin tüm detaylarının tamamlanması gerekiyor.
All the details of the project need to be completed.
In this sentence, 'detaylarının' refers to details belonging to the story, focusing on another possessive relationship.
Kitap incelemesinde hikayenin detaylarının açıklanması önemliydi.
In the book review, explaining the details of the story was important.
Here, 'detaylarının' refers to the specific details of the photo shoot, connected similarly via possessive genitive.