/* F3 OS mobile navigation: real hamburger + full-screen drawer */
.os-mobile-menu{display:none}
@media (max-width: 820px){
  body.os-menu-open{overflow:hidden}
  .app-shell{display:block!important;min-height:100vh}
  .sidebar{
    position:fixed!important;top:0!important;left:0!important;right:0!important;z-index:1000!important;
    width:100%!important;height:76px!important;min-height:76px!important;padding:0 14px!important;
    display:flex!important;flex-direction:row!important;align-items:center!important;justify-content:space-between!important;
    border-right:0!important;border-bottom:1px solid #353132!important;background:var(--black)!important;overflow:visible!important;
  }
  .brand-lockup{
    width:auto!important;height:76px!important;padding:0!important;margin:0!important;display:flex!important;align-items:center!important;gap:10px!important;
  }
  .brand-lockup img{width:98px!important;max-height:54px!important;object-fit:contain!important}
  .brand-lockup span{font-size:8px!important;margin:0!important;line-height:1.05!important}
  .os-mobile-menu{
    display:grid!important;place-items:center!important;position:relative!important;z-index:1002!important;
    width:48px!important;height:48px!important;padding:0!important;border:1px solid #4a4647!important;background:var(--acid)!important;color:var(--black)!important;
  }
  .os-mobile-menu-bars{display:grid;width:22px;gap:5px}
  .os-mobile-menu-bars i{display:block;width:22px;height:2px;background:var(--black);transition:transform .2s ease,opacity .2s ease}
  .sidebar.mobile-open .os-mobile-menu-bars i:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .sidebar.mobile-open .os-mobile-menu-bars i:nth-child(2){opacity:0}
  .sidebar.mobile-open .os-mobile-menu-bars i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  #main-nav{
    display:none!important;position:fixed!important;top:76px!important;left:0!important;right:0!important;bottom:0!important;z-index:1001!important;
    padding:16px 14px 110px!important;background:var(--black)!important;overflow-y:auto!important;align-content:start!important;gap:4px!important;
  }
  .sidebar.mobile-open #main-nav{display:grid!important}
  #main-nav .nav-item{
    min-height:56px!important;padding:13px 14px!important;border-top:1px solid #302d2e!important;border-radius:0!important;
    color:#d8d3d4!important;grid-template-columns:34px 1fr auto!important;font-size:15px!important;transform:none!important;
  }
  #main-nav .nav-item:first-child{border-top:0!important}
  #main-nav .nav-item.active{background:var(--acid)!important;color:var(--black)!important}
  #main-nav .nav-icon{font-size:19px!important}
  #main-nav .nav-num{font-size:10px!important}
  #main-nav .nav-arrow{opacity:.65!important}
  .sidebar-bottom{
    display:none!important;position:fixed!important;left:14px!important;right:14px!important;bottom:14px!important;z-index:1002!important;margin:0!important;
  }
  .sidebar.mobile-open .sidebar-bottom{display:block!important}
  .sidebar.mobile-open .pulse{display:none!important}
  .sidebar.mobile-open .profile-button{background:#211f20!important}
  .main-content{width:100%!important;min-width:0!important;padding-top:76px!important}
  .topbar{
    padding:18px 16px 14px!important;display:grid!important;grid-template-columns:1fr auto!important;gap:12px!important;align-items:start!important;
  }
  .topbar-title{min-width:0!important}
  .topbar-title h1{font-size:30px!important;line-height:.95!important}
  .topbar-actions{display:flex!important;gap:7px!important;justify-content:flex-end!important;flex-wrap:wrap!important}
  .topbar-actions .button.ghost:not(.f3-pwa-action){display:none!important}
  .topbar-actions .f3-pwa-action{display:inline-flex!important;align-items:center!important;justify-content:center!important;padding:10px 12px!important;font-size:10px!important}
  .topbar-actions .button.acid{padding:10px 12px!important;font-size:10px!important;box-shadow:3px 3px 0 var(--black)!important}
  .icon-action{width:38px!important;height:38px!important}
  .view{padding:8px 16px 36px!important}
}
@media (max-width: 480px){
  .brand-lockup img{width:88px!important}
  .brand-lockup span{font-size:7px!important}
  .topbar{grid-template-columns:1fr!important}
  .topbar-actions{justify-content:flex-start!important}
}