.admin-shell{ display:flex; min-height:100vh; background:#f6f7fb; }
.admin-sidebar{
  width: 260px; background:#fff; border-right:1px solid #e9ecef;
  position: sticky; top:0; height:100vh;
}
.admin-main{ flex:1; }
.admin-topbar{ background:#fff; position: sticky; top:0; z-index:10; }
.admin-sidebar .nav-item{
  display:block; padding:10px 12px; border-radius:10px; margin:6px;
  color:#2F4158; text-decoration:none; font-weight:600;
}
.admin-sidebar .nav-item:hover{ background:#f1f5ff; }
@media(max-width: 992px){
  .admin-sidebar{ display:none; }
}

.admin-sidebar .nav-item{touch-action:manipulation;}