.preview-tab{display:none}
@media(max-width:900px){
  html,body{width:100%;min-height:100%;overflow-x:hidden}
  body{display:block;background:#07111f}
  aside{position:relative;width:100%;height:auto;min-height:100dvh;padding:14px 14px calc(20px + env(safe-area-inset-bottom));border:0}
  aside>h1{font-size:22px}
  aside>p{margin:8px 0 10px;font-size:13px}
  .actions{grid-template-columns:1fr 1fr;margin:10px 0}
  .actions button,.tab{min-height:46px;font-size:13px;touch-action:manipulation}
  .actions button:last-child{grid-column:1/-1}
  .tabs{position:sticky;top:0;z-index:300;grid-template-columns:1.25fr 1fr .75fr;margin:12px -4px;padding:5px;box-shadow:0 4px 16px #000b}
  .preview-tab{display:block}
  .editing-help{font-size:11px}
  .group{margin-top:12px}
  .group h3{position:sticky;top:61px;z-index:150;margin:0 -2px 8px;padding:9px 4px;background:#091827}
  .field{margin:10px 0}
  .field>label,#playerForm label{font-size:12px}
  .multi-select{min-height:50px;padding:6px}
  .multi-select input,#playerForm input,#playerForm select{min-height:38px;font-size:16px}
  .chip{min-height:28px;padding:5px 7px;font-size:12px}
  .chip button{width:20px;height:20px}
  .select-options{position:fixed;z-index:500;left:10px;right:10px;top:auto;bottom:calc(10px + env(safe-area-inset-bottom));max-height:48vh;padding:7px;border-radius:12px}
  .select-option{min-height:54px;padding:10px}
  .select-option strong{font-size:15px}
  .select-option small{font-size:11px}
  .power-grid{grid-template-columns:1fr;gap:10px}
  .form-actions button{min-height:44px}
  #playerList{padding-bottom:20px}
  .player-row{padding:12px 4px}
  .player-row strong{font-size:15px}
  .player-row small{font-size:11px}
  .player-row button{min-height:38px;font-size:12px}
  main{display:none;width:100%;padding:8px 0 16px;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin;background:#030913}
  .preview-mode aside{min-height:auto;padding-bottom:8px}
  .preview-mode aside>p,.preview-mode .actions,.preview-mode .tab-panel{display:none}
  .preview-mode main{display:block}
  .preview-mode #posterViewport{margin-left:8px;margin-right:8px}
  #poster{touch-action:pan-x pan-y}
  .building-card{touch-action:none}
  .resize-handle{width:22px;height:22px}
  .preview-mode .building-card.selected{outline-width:5px}
}
@media(max-width:420px){
  aside{padding-left:10px;padding-right:10px}
  .tabs{margin-left:0;margin-right:0}
  .actions button{padding:8px 5px}
  .select-options{left:6px;right:6px}
}