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768px){.admin-sidebar{position:fixed;left:0;top:0;bottom:0;z-index:100;transform:translate(-100%);transition:transform .3s}.admin-sidebar.mobile-open{transform:translate(0)}.sidebar-overlay.show{display:block}.admin-main{margin-left:0}.admin-topbar{padding:0 16px}.admin-content-wrapper{padding:16px}.topbar-user-info{display:none}.stats-grid{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.form-row{flex-direction:column}.modal-container{max-width:95vw}}