*{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;justify-content:center;align-items:center;touch-action:manipulation;-webkit-tap-highlight-color:transparent}#game-container{width:100%;max-width:400px;background:#fff;border-radius:20px;box-shadow:0 10px 40px #0000004d;overflow:hidden}#game-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#f8f9fa;border-bottom:1px solid #e9ecef}#game-header h1{font-size:18px;font-weight:600;color:#333}#game-header .back-link{display:flex;align-items:center;gap:4px;color:#667eea;font-size:14px;font-weight:500;text-decoration:none;padding:8px;border-radius:8px;transition:background .2s;min-height:44px;min-width:44px}#game-header .back-link:active{background:#e9ecef}#game-header button{width:40px;height:40px;border:none;border-radius:50%;background:#e9ecef;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}#game-header button:hover{background:#dee2e6}#game-header button:active{transform:scale(.95)}#game-main{display:flex;justify-content:center;padding:16px;background:#f1f3f4}#game-canvas{display:block;background:#e8f4f8;border-radius:12px;box-shadow:inset 0 2px 8px #0000001a;max-width:100%;height:auto}#game-footer{display:flex;justify-content:space-between;padding:12px 16px;background:#f8f9fa;border-top:1px solid #e9ecef;font-size:14px;color:#666}#overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;opacity:1;transition:opacity .3s}#overlay.hidden{opacity:0;pointer-events:none}#overlay-content{background:#fff;border-radius:16px;padding:32px;text-align:center;max-width:280px;transform:scale(1);transition:transform .3s}#overlay.hidden #overlay-content{transform:scale(.9)}#overlay-title{font-size:24px;font-weight:700;margin-bottom:8px;color:#333}#overlay-message{font-size:14px;color:#666;margin-bottom:24px}#overlay-buttons{display:flex;gap:12px;justify-content:center}#overlay-buttons button{padding:12px 24px;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s}#overlay-retry{background:#e9ecef;color:#333}#overlay-retry:hover{background:#dee2e6}#overlay-next{background:#4caf50;color:#fff}#overlay-next:hover{background:#43a047}#overlay-buttons button:active{transform:scale(.95)}@media(prefers-color-scheme:dark){body{background:linear-gradient(135deg,#1a1a2e,#16213e)}#game-container{background:#1e1e2e}#game-header{background:#252536;border-color:#3a3a4a}#game-header h1{color:#e0e0e0}#game-header button{background:#3a3a4a;color:#e0e0e0}#game-header button:hover{background:#4a4a5a}#game-main{background:#1a1a2a}#game-canvas{background:#252536}#game-footer{background:#252536;border-color:#3a3a4a;color:#a0a0a0}#overlay-content{background:#2a2a3a}#overlay-title{color:#e0e0e0}#overlay-message{color:#a0a0a0}#overlay-retry{background:#3a3a4a;color:#e0e0e0}}@media(max-width:420px){#game-container{max-width:100%;border-radius:0}}