.sidebar {
            height: 100vh;
            position: fixed;
            width: 250px;
            transition: all 0.3s;
            z-index: 1001;
            box-shadow: 2px 0 5px rgba(0,0,0,0.1);
        }
        
        .sidebar.collapsed {
            width: 70px;
            overflow: hidden;
        }
        
        .sidebar.collapsed .nav-link-text,
        .sidebar.collapsed .sidebar-header h4,
        .sidebar.collapsed .user-name,
        .sidebar.collapsed .dropdown-toggle::after {
            display: none;
        }
        
        .sidebar.collapsed .nav-link {
            text-align: center;
            justify-content: center;
        }
        
        .sidebar.collapsed .nav-link i {
            margin-right: 0;
            font-size: 1.2rem;
        }
        
        .sidebar .nav-link {
            color: #333;
            padding: 0.75rem 1rem;
            border-radius: 0.25rem;
            margin-bottom: 0.25rem;
            display: flex;
            align-items: center;
            position: relative;
        }
        
        .sidebar .nav-link:hover, .sidebar .nav-link.active {
            background-color: rgba(0, 0, 0, 0.1);
        }
        
        .sidebar .nav-link i {
            margin-right: 10px;
        }
        
        /* Nested menu styles */
        .sidebar .dropdown-menu {
            border: none;
            background-color: rgba(0,0,0,0.05);
            margin-left: 10px;
            z-index: 1001;
        }

        .sidebar .dropdown-item {
            padding-left: 2rem;
        }
        
        .sidebar .dropdown-toggle::after {
            margin-left: auto;
        }
        
        .main-content {
            margin-left: 250px;
            padding: 20px;
            transition: all 0.3s;
        }
        
        .main-content.collapsed {
            margin-left: 70px;
        }
        
        .navbar-centered .navbar-nav {
            margin: 0 auto;
        }
        
        /* Top navbar nested dropdown styles */
        .dropdown-submenu {
            position: relative;
        }
        
        .dropdown-submenu .dropdown-menu {
            top: 0;
            left: 100%;
            margin-top: -0.5rem;
            margin-left: 0.1rem;
        }
        
        @media (max-width: 992px) {
            .sidebar {
                margin-left: -250px;
            }
            .sidebar.active {
                margin-left: 0;
            }
            .main-content {
                margin-left: 0;
            }
            .main-content.active {
                margin-left: 250px;
            }
            .sidebar.collapsed {
                margin-left: -70px;
            }
            .sidebar.collapsed.active {
                margin-left: 0;
                width: 70px;
            }
            .main-content.collapsed.active {
                margin-left: 70px;
            }
            
            /* Stack nested dropdowns on mobile */
            .dropdown-submenu .dropdown-menu {
                left: 0;
                top: 100%;
                margin-top: 0;
            }
        }