Generally, Japanese style is considered to be a tatami room.
This is based on Shoin-zukuri.
Shinden-zukuri is the origin of Shoin-zukuri.
Shinden-zukuri is not suitable for housing.
Because the joinery are very large, heavy and difficult to use.
After hundreds of years, the sliding doors are small and easy to use.
In addition, the Shinden-zukuri will be smaller.
And the structure of the room appears.
From here, it will develop into the current Shoin-zukuri.
It took about 500 years from Shinden-zukuri to Shoin-zukuri.