Facebook-Like Social UI Redesign

My custom social platform follows the familiar Facebook-style layout, but the visual layer is starting to look dated. I want the entire user interface refreshed so it feels modern, intuitive, and fully responsive across desktop and mobile without disrupting the underlying functionality... (Budget: $30 - $250 USD, Jobs: CSS, Frontend Development, Graphic Design, HTML5, User Interface / IA, Web Design, Web Development, Website Design)