Is weed legal in Spain?

Hello there, I was wondering if you could clarify something for me regarding the legality of marijuana, or weed, as it's commonly referred to, in Spain. I've heard differing opinions on the matter, and I'm curious about the current stance of the Spanish government towards its possession, use, and sale. Could you please provide me with a concise and accurate answer to the question, "Is weed legal in Spain?" Thank you in advance for your help.