/* V3.5D.5.4 — Modern Arena render lock.
   app.js can rebuild the legacy Arena DOM during route/profile activity before
   arena-v33 upgrades it. Keep that transitional DOM invisible so users never
   see the old side-panel UI. No Arena content, behavior or layout is changed. */
#arenaPanel:not([data-v33="1"]){
  visibility:hidden!important;
  opacity:0!important;
  pointer-events:none!important;
}
#arenaPanel[data-v33="1"]{
  visibility:visible!important;
  opacity:1!important;
}
#arenaDockBtn:not([data-v33="1"]){
  visibility:hidden!important;
  opacity:0!important;
  pointer-events:none!important;
}
#arenaDockBtn[data-v33="1"]{
  visibility:visible!important;
  opacity:1!important;
}
/* Never animate the legacy-to-modern handoff itself. The modern Arena keeps
   its own entrance animation once the upgrade has completed. */
#arenaPanel:not([data-v33="1"]),
#arenaDockBtn:not([data-v33="1"]){
  transition:none!important;
}