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span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}.menu-toggle.active span:nth-child(2){opacity:0}.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}.sidebar-overlay{display:none;position:fixed;inset:0;background:#0000004d;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:90;opacity:0;transition:opacity .3s ease}.sidebar-overlay.active{opacity:1}@media(max-width:768px){.menu-toggle{display:flex}.workspace{grid-template-columns:1fr}.sidebar{position:fixed;top:0;right:-320px;width:300px;height:100vh;z-index:100;border-right:none;border-left:1px solid var(--border-light);box-shadow:var(--shadow-lg);transition:right .3s ease;padding-top:80px}.sidebar.open{right:0}.sidebar-overlay{display:block}.canvas-container{height:calc(100vh - 60px)}.header{position:relative;z-index:101}.summary-modal{width:95%;max-height:90vh}.summary-stats{grid-template-columns:1fr}.header-btn span{display:none}.header-btn{padding:0;width:36px}}