na-adjective, noun which may take the genitive case particle 'no'
very bleak outlook; dim prospects
Describes a situation where the future looks hopeless or extremely unpromising. Often used in a resigned or pessimistic tone.
このまま成績が下がり続けたら、進学はお先真っ暗だ。
If my grades keep dropping like this, my prospects for further education are very bleak.
With the company's performance worsening, I feel like the future is completely dark.