Two-tiered Navigation Menu with Profile Dropdown

This implements a two-tiered navigation menu with the following features: - Top navbar with logo, primary links, search bar, notifications icon, and profile dropdown - Responsive mobile menu toggle button - Mobile menu overlays content when opened - Current page indicator styles on primary links - Profile dropdown with user details and account links - Background color split for visual interest - Uses utility classes like flex, grid, divide, space, sizing etc to build component styles