/* Public Aceternity Grouped Sidebar preview adapted to the classroom's native DOM. */
.classroom-shell{grid-template-columns:300px minmax(0,1fr);gap:0;transition:grid-template-columns .28s ease}
.grouped-sidebar{border-right:1px solid #e4e8ec;background:#f8fafb;min-width:0}
.grouped-sidebar .sidebar-panel{padding:20px 14px;max-height:100dvh;scrollbar-width:thin;scrollbar-color:#d1dcdf transparent}
.grouped-sidebar .sidebar-body{min-width:0}
.grouped-sidebar .sidebar-title{display:none}
.sidebar-brand-row{display:flex;align-items:center;gap:10px;margin:0 0 24px}
.sidebar-brand{display:flex;align-items:center;gap:10px;min-width:0;flex:1}
.sidebar-brand-icon{display:grid;place-items:center;width:36px;height:36px;background:#087f83;border-radius:10px;color:white;flex-shrink:0}
.sidebar-brand strong{display:block;font-size:15px;letter-spacing:-.4px}.sidebar-brand small{display:block;font-size:11px;color:#87969f}
.sidebar-collapse{display:grid;place-items:center;width:30px;height:32px;flex-shrink:0;background:white;border:1px solid #dfe6e9;border-radius:8px;color:#647981;cursor:pointer}
.sidebar-collapse .icon{width:17px;transform:rotate(90deg);transition:transform .25s}
.sidebar-primary{display:grid;gap:4px;padding:4px 0 20px;margin-bottom:18px;border-bottom:1px solid #e1e7ea}
.sidebar-primary a{display:flex;align-items:center;gap:10px;min-height:40px;padding:9px 10px;border-radius:8px;font-size:13px;color:#5d6b76}
.sidebar-primary .icon{width:18px;height:18px}.sidebar-count{margin-left:auto;font-size:11px;background:#e6eded;padding:0 6px;border-radius:5px}
.sidebar-primary a:hover,.grouped-sidebar .chapter a:hover{background:#edf2f4;color:#213d43}
.sidebar-primary a[aria-current=page]{background:#e2f0ed;color:#087f83;font-weight:700}
.sidebar-group-label{display:flex;justify-content:space-between;padding:0 10px 12px;color:#84919b;font-size:11px;font-weight:650}
.sidebar-group-label>span{font-weight:400}
.grouped-sidebar .chapter{border:0;margin-bottom:8px}
.grouped-sidebar .chapter>summary{padding:9px 8px;gap:9px;border-radius:8px;font-size:12px;color:#53636e;font-weight:650;min-height:38px}
.grouped-sidebar .chapter>summary:hover{background:#edf2f4}
.grouped-sidebar .chapter-number{width:25px;height:25px;border-radius:7px;display:grid;place-items:center;background:#e9edef;color:#72808a;font-size:10px;flex-shrink:0}
.grouped-sidebar .chapter[open] .chapter-number{background:#dceee9;color:#087f83}
.grouped-sidebar .chapter-label{flex:1}.grouped-sidebar .chapter summary>.icon{width:13px;height:13px}
.grouped-sidebar .chapter>div{margin:3px 0 9px 20px;padding:0 0 0 12px;border-left:1px solid #dde4e7;animation:sidebar-group-reveal .18s ease-out}
.grouped-sidebar .chapter a{gap:9px;padding:9px 8px;margin:2px 0;border:0;border-radius:7px;color:#667680;line-height:1.5;font-size:12px}
.grouped-sidebar .chapter a>.lesson-menu-number{opacity:1;flex-shrink:0;color:#92a0a8;font-size:10px;min-width:17px;margin-top:2px}
.grouped-sidebar .chapter a>.lesson-menu-title{opacity:1;font-size:12px;margin:0}
.grouped-sidebar .chapter a[aria-current=page]{background:#087f83;color:white;font-weight:650;box-shadow:0 2px 6px #087f831a}
.grouped-sidebar .chapter a[aria-current=page]>.lesson-menu-number{color:#bce9df}
.grouped-sidebar .source-sidebar{padding:16px 10px 3px;margin-top:20px;border-color:#e1e7ea;font-size:12px;gap:10px}.grouped-sidebar .source-sidebar .icon{width:18px;height:18px}
.sidebar-search-shortcut{display:none}
@keyframes sidebar-group-reveal{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:801px){
.classroom-shell.sidebar-is-collapsed{grid-template-columns:74px minmax(0,1fr)}
.sidebar-is-collapsed .grouped-sidebar .sidebar-panel{padding:16px 10px}
.sidebar-is-collapsed .grouped-sidebar .sidebar-label,.sidebar-is-collapsed .sidebar-search{display:none}
.sidebar-is-collapsed .sidebar-brand-row{flex-direction:column;gap:12px;margin-bottom:14px}
.sidebar-is-collapsed .sidebar-collapse{width:32px}.sidebar-is-collapsed .sidebar-collapse .icon{transform:rotate(-90deg)}
.sidebar-is-collapsed .sidebar-search-shortcut{display:grid;place-items:center;background:transparent;border:0;color:#087f83;width:100%;height:40px;margin-bottom:10px;border-radius:8px;cursor:pointer}
.sidebar-is-collapsed .sidebar-primary a{justify-content:center;padding:10px}
.sidebar-is-collapsed .grouped-sidebar .chapter>summary{justify-content:center;padding:7px 0}
.sidebar-is-collapsed .grouped-sidebar .chapter>div{border:0;margin:0;padding:0}
.sidebar-is-collapsed .grouped-sidebar .chapter a{justify-content:center;padding:9px 4px}
.sidebar-is-collapsed .grouped-sidebar .chapter a>.lesson-menu-number{text-align:center;margin:0}
.sidebar-is-collapsed .grouped-sidebar .source-sidebar{justify-content:center;padding:16px 0}
.sidebar-is-collapsed .grouped-sidebar .search-empty{display:none}
}
@media(max-width:800px){.classroom-shell{display:block}.grouped-sidebar{border-right:0;border-bottom:1px solid #e4e8ec;border-radius:12px;margin-top:16px}.grouped-sidebar .sidebar-panel{padding:14px;max-height:none}.grouped-sidebar .sidebar-title{display:flex;font-size:15px}.grouped-sidebar .sidebar-body{padding:14px 4px 4px;max-height:65dvh}.sidebar-collapse{display:none}.sidebar-brand-row{margin-bottom:18px}.grouped-sidebar .chapter a>.lesson-menu-title{font-size:13px}.grouped-sidebar .chapter>summary{font-size:13px}}
@media(prefers-reduced-motion:reduce){.classroom-shell,.sidebar-collapse .icon{transition:none}.grouped-sidebar .chapter>div{animation:none}}
@media print{.grouped-sidebar{display:none}.classroom-shell,.classroom-shell.sidebar-is-collapsed{display:block}}