.activity-shell-controls{
  position:fixed;
  top:10px;
  right:10px;
  z-index:9999;
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  justify-content:flex-end;
  max-width:min(96vw,640px);
}

.activity-shell-btn{
  border:0;
  border-radius:999px;
  padding:12px 16px;
  font:900 0.95rem/1 "Avenir Next","Segoe UI",Arial,sans-serif;
  text-decoration:none;
  cursor:pointer;
  color:#f8fbff;
  background:rgba(7,16,30,.78);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 10px 24px rgba(0,0,0,.22);
  backdrop-filter:blur(12px);
}

.activity-shell-btn.primary{
  background:linear-gradient(135deg,#2563eb,#6d28d9);
}

.activity-shell-btn:hover{
  filter:brightness(1.05);
}

body.activity-shell-ready{
  min-height:100vh;
}

body.activity-shell-ready .app-shell,
body.activity-shell-ready .flag-app,
body.activity-shell-ready .page,
body.activity-shell-ready .alpha-app,
body.activity-shell-ready .maincard,
body.activity-shell-ready .app{
  width:100%;
  max-width:none !important;
}

body.activity-shell-ready.activity-fs{
  overflow:hidden;
}

body.activity-shell-ready.activity-fs .app-shell,
body.activity-shell-ready.activity-fs .flag-app,
body.activity-shell-ready.activity-fs .page,
body.activity-shell-ready.activity-fs .alpha-app,
body.activity-shell-ready.activity-fs .maincard,
body.activity-shell-ready.activity-fs .app{
  width:100vw !important;
  max-width:none !important;
  min-height:100vh;
  padding-left:8px !important;
  padding-right:8px !important;
}

body.activity-shell-ready.activity-fs .hero,
body.activity-shell-ready.activity-fs .hero-card,
body.activity-shell-ready.activity-fs .flag-hero,
body.activity-shell-ready.activity-fs .topbar,
body.activity-shell-ready.activity-fs .toolbar-card,
body.activity-shell-ready.activity-fs .board-topbar{
  border-radius:18px !important;
}

body.activity-shell-ready.activity-fs .layout,
body.activity-shell-ready.activity-fs .game-layout,
body.activity-shell-ready.activity-fs .board-shell,
body.activity-shell-ready.activity-fs .quiz-shell,
body.activity-shell-ready.activity-fs .battle-top,
body.activity-shell-ready.activity-fs .battle-layout,
body.activity-shell-ready.activity-fs .board-grid{
  width:100%;
  max-width:none !important;
}

body.activity-shell-ready.activity-fs .screen.active{
  min-height:100vh;
}

@media (max-width: 760px){
  .activity-shell-controls{
    left:8px;
    right:8px;
    top:auto;
    bottom:8px;
    justify-content:stretch;
  }

  .activity-shell-btn{
    flex:1 1 120px;
    text-align:center;
    padding:12px 14px;
  }
}