How much do I need to make to live comfortably in San Francisco?

I may be moving to San Francisco pretty soon. I currently live in Dallas and have a fairly decent quality of life money-wise. I’d like to maintain roughly the same quality of living as I have here. Here’s what it boils down to:

* I don’t really need anything fancy in terms of living accommodations (although I will be living by myself most likely).
* I plan on selling my car and just using public transit.
* I’m open to living in some of the “less desirable” places as long as they’re safe and walkable.
* I do eat out more than I should, but I generally try to keep the cost down.

I’m considering what salary I’d like to have, and I just want to get a ballpark idea of what kind of salary I’d be happy with.