.game-container{flex-direction:column;align-items:center;max-width:900px;margin:0 auto;padding:40px 10px;display:flex}body{background:#f5f5f5;margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,sans-serif}.row{flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;margin-bottom:14px;display:flex}.tile{cursor:pointer;border-radius:8px;justify-content:center;align-items:center;min-width:50px;height:50px;font-size:20px;font-weight:700;transition:all .2s;display:flex}.tile-available{background:#d0d0d0}.tile-used{color:#fff;cursor:not-allowed;background:#555}.tile-active{border:3px solid #3b82f6}.tile-result{background:#bdbdbd}.tile-result-used{color:#fff;background:#444}.operator{color:#fff;background:#f59e0b}.operator:hover{opacity:.8}.button{cursor:pointer;border:none;border-radius:8px;padding:10px 18px;font-weight:700}.button-danger{color:#fff;background:#dc2626;min-width:50px;height:50px}.button-danger:hover{opacity:.8}