Toddler refusing to sleep

I need help pleaseee

My daughter who is 18 months i refusing to go to bed at bedtime now she will fight me tooth and nail we haven’t changed her bedtime routine so she knows when bedtime is

She doesn’t fight me at her nap which is at 10am and she sleeps till 1130-12 and she goes down super easy

But for bed she refuses to sleep or if she goes go to sleep she will wake up with a night terror in less then 2hrs or will wake up at 2 or 3in the morning and will be wide awake and not go to bed till 4/5am I hate seeing her like this and I can tell the lack of sleep is effecting her

Any tips?