.main-sidebar{width:100%;border-right:1px solid #ddd;padding:15px;overflow-y:auto}.sidebar-section{margin-bottom:2px}.sidebar-list{width:100%;border:none;border-radius:4px;background-color:#fff;box-shadow:0 1px 3px rgba(0,0,0,.1)}.sidebar-list .summary{padding:10px 15px;cursor:pointer;font-weight:600;display:flex;align-items:center;justify-content:space-between;position:relative}.summary::after{content:"▼";font-size:12px;transition:transform .3s ease}details[open] .summary::after{transform:rotate(180deg)}.sidebar-list ul{list-style-type:none;padding:0;margin:0}.sidebar-list li{padding:8px 15px 8px 20px;border-top:1px solid #eee;font-size:14px;color:#555}.sidebar-list li:hover{background-color:#f7f7f7;color:#333}.sidebar-list ul{max-height:0;overflow:hidden;transition:max-height .3s ease}details[open] .sidebar-list ul{max-height:500px}.sidebar-list a{text-decoration:none}a:hover{text-color:red}