16 year old daughter is not pleased I want to take tech at bedtime

I’ve read the studies and done my own testing with my now 16 year old daughter and bottom line for me is technology including smart phones and computers doesn’t live in the bedroom. Period. A standard alarm clock wakes her. And What I have noticed is that her morning disposition is better, her overall attitude is better, and we see a clear difference about her attitude toward technology. And without saying it but watching her sometimes debate the issue for a “special nigh” we see relief in her when we say no and it frees her to rest with no guilt and no interruptions. And we even see in the occasional message that comes in from friends after her curfew that they know she will not answer until the morning. It has definitely changed things for the better. I think they simply can’t resist the temptation to just peek or continue on after hours. Just my two bits…