A Costco employee on leave from the Inglewood store deserves more than $850,000 for being disparaged by fellow workers in a video and also demoted, all because he is gay, an attorney told a civil jury Wednesday. “Mr. [Juan I.] Valera was treated different simply because of his sexual orientation,’’ attorney Leo J. Terrell said. But Costco lawyer Tara L. Wilcox said Valera’s case has plenty of allegations that do not add up or make sense. “The three people involved in the video didn’t even know he was gay,’’ Wilcox said in her closing argument. The HIV-positive plaintiff filed ...