Enhance existing Drupal 7 site and theme for mobile devices (iPad, iPhone, Android) - repost

We have an existing Drupal 7 page at [login to view URL] using a custom theme based on zen theme. This site does not give good user experience on mobile equipment: iOS based (iPad and iPhone) and Android based devices. Some examples of bad user experience are: - the initial zoom level is wrong - zooming in and out not working well - unreadable fonts - behaviour of second level menus - behaviour of right toolbox and popup (search, map and image gallery) - image popups. Other things might need adjustment to achieve a overall good user and visual experience to mobile device users. We need you to adjust the theme / CSS / Javascript to achieve a good to very good mobile experience. Maybe some changes in the second level menu scrolling functionality are needed as well (for example disable scrolling and make two rows out of it). Since it is not easy to describe all requirements in detail, we would like to follow a agile approach with some development cycles and feedback from our side. To account for this, please estimate a bit more than on projects with detailed requirements known in advance. Additional items: - Changes should be tested on mobile devices. We can give you access to Sauce Labs for proper testing. - Changes should not affect / change the layout / functionality for PC (for example IE, Firefox, Chrome, ... on PC) You should have at least have good experience with Drupal, HTML, (responsive) CSS, Javascript and know what good user experience is made off. In addition to this request we are looking for a long term partnership for additional development work for this site. Many issues are still pending. For this we would prefer working with an individual person or an individual programmer from a company, so that knowledge of this project is not lost when doing future requests. If this project will work well, we are happy to give additional projects to you or work on an hourly budget with you. Please consider the PDF with our attached basic requirements during your estimation.