I'm new to working as a contractor, and have just been offered a contract-to-hire position through a contracting company for a specific client. Notably, I have not seen the actual contract I would be signing or seen the formal offer letter, just the rate, start date and expected duration. The document I would be signing states that signing it confirms I accept the offer, and that the contract to sign will be generated after that. I'm a resident of California, and the contracting company is in Texas.
My question is: Is this unusual, and if I sign to accept the offer, is any of it binding when it comes to signing the actual contract? I know that with a regular employment offer, most if not all US states allow walking away from it at any point without penalties, even after the offer has been accepted. I have never done contract work however, so I don't know if more restrictive clauses or penalties can be added to those, and if so, would it be easy to challenge? For reference, I have not picked up any shady vibes from either the client or the contracting company throughout the process, so I don't really expect that anyone's trying to pull anything funny. I'm just trying to make sure I don't end up signing a contract I haven't seen.
Edit: Thanks, I have requested a wording change that explicitly states the contract will be signed and executed separately, which they agreed to without any issues.