Responsive Sidebar - Copy this Angular, Css Component to your project

The-sidebar-features-a-responsive-design-with-three-primary-menu-items,-each-accompanied-by-nested-sub-items.-In-its-expanded-state,-the-sidebar-displays-icons-alongside-descriptive-text-for-each-menu-item-and-its-sub-items,-creating-a-clear-navigation-structure.-When-toggled-to-the-collapsed-state,-only-the-icons-remain-visible,-ensuring-a-compact-view-while-maintaining-functionality.-Each-primary-item-can-be-clicked-to-reveal-or-hide-its-sub-items,-which-are-visually-indented-for-clarity.-Smooth-animations-enhance-the-transition-between-expanded-and-collapsed-states,-providing-a-seamless-user-experience.-This-design-is-ideal-for-balancing-space-efficiency-with-usability-in-modern-web-applications.