How much money do you need in your bank account to move to Spain?

Hello there, I'm interested in relocating to Spain, and I'm curious about the financial aspect of it. Could you please tell me, how much money should I aim to have in my bank account before making the move? I understand that living expenses and the cost of living vary depending on various factors, but a general estimate would be really helpful. Would it differ depending on the city I choose to settle in? And, do I need to factor in any additional costs or taxes that might apply to foreigners? I'm just trying to get a sense of the financial picture before I start planning my relocation. Thank you for your help!