As you can see the new review time for WP Themes is less than 1x day. They are now hard rejecting almost all the themes.
Nowadays the hard rejection is (received in less than one day) = a soft rejection. As I understand, since the new WP Rules were introduced, many items will be hard rejected for less problems (then few months ago).
What you can do now, double check the new WP Standards (design + code), and then resubmit your item.
P.S: Your item is pretty good. I’ve seen many bad items rejected (here on the forums) but is just me or this item is not so bad?!
You can also submit a ticket at the Author Envato Help team and ask for more feedback and/or the hard rejection was a mistake.
Good Luck! (Please don’t forget to post the results/updates here)