“The Orange County Performing Arts Center sued star architect Cesar Pelli and construction giant Fluor Corp., blaming them and subcontractors for more than $30 million in cost overruns and irremediable design flaws in the new Renee and Henry Segerstrom Concert Hall in Costa Mesa.” Filed Friday, the suit “questions costs that ballooned from a planned $200 million to an estimated $240 million, and design flaws that resulted in obstructed sight lines, cramped quarters and a lack of legroom in certain seats.”