Worked on integrating a modern Glass UI theme into the microsoft/fluentui-apple repository, focusing on enhancing visual consistency and accessibility across core components. Leveraged Swift and advanced theming techniques to introduce blur-backed surfaces for the BottomSheetController and unify the appearance of the Tab Bar. Consolidated theming tokens and streamlined state handling to support dynamic appearances, including disabled and unselected states, which reduced future maintenance complexity. Applied component development and UI development skills to establish a scalable theming foundation, enabling cohesive visuals and improved developer efficiency for future Fluent UI Apple component theming efforts without introducing new bugs during the release period.