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ease;margin-right:8px}.mobile-menu-button:hover{background:#f3f4f6;color:#374151}@media(max-width:768px){.mobile-overlay{display:block}.mobile-menu-button{display:flex}.file-sidebar{position:fixed;top:0;left:0;height:100vh;z-index:1001;transform:translate(-100%);transition:transform .3s ease;box-shadow:4px 0 20px #00000026}.file-sidebar.mobile-open{transform:translate(0)}.main-editor-area{width:100%}.editor-toolbar{padding:8px 16px}.toolbar-group{gap:1px}.editor-toolbar button{padding:4px 8px;min-width:28px;height:28px;font-size:13px}.editor-content{padding:32px 16px}}@media(max-width:480px){.file-sidebar{width:260px}.file-sidebar-header{padding:16px 12px}.file-sidebar-header h3{font-size:14px}.file-item{padding:8px 12px;margin:0 2px}.file-name{font-size:13px}.editor-toolbar{padding:6px 12px;flex-wrap:wrap;gap:4px}.toolbar-group{order:2;justify-content:center;margin-top:4px}.current-file-info{order:1;flex:1;min-width:0}.toolbar-spacer{display:none}.editor-content{padding:24px 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