[2019] Beware of scammers trying to let you login to a fake esl website

Someone contacted me to get in a tournament where you can get keys. He gave me the link to a website where i had to login. I won't say the url here but it's a fake esl site that looks legit (secure connection with certification).
When you try to login it asks for your steam login. This popup window looks again legit but since I was suspicious I looked more closely. I couldn't drag that steam login window out of the main window which means it's not a real window. I also searched the real site on google and esl doesn't ask for your steam account at logging in.

Edit: To be clear, I wasn't scammed but an attempt was made. Just trying to spread an awareness for this.

Take care guys