#tttBoard{background:#0a0f24;border-radius:10px;gap:4px;padding:6px;display:grid;box-shadow:0 0 25px #00000080,inset 0 0 10px #ffffff0d}.tttCell{cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:manipulation;background:#1a2340;border:none;border-radius:8px;justify-content:center;align-items:center;font-size:2.4em;font-weight:700;line-height:1;transition:background .12s,transform .1s;display:flex}.tttCell.empty:hover:not(:disabled){background:#2a3558;transform:scale(1.04)}.tttCell.player{color:#6ecfff;text-shadow:0 0 12px #6ecfff80;cursor:default}.tttCell.ai{color:#ff7a7a;text-shadow:0 0 12px #ff7a7a80;cursor:default}.tttCell.win{box-shadow:0 0 0 2px var(--gt-gold), inset 0 0 12px #28cec040;background:#3a4a2a}#tttMessage{min-height:1.4em;color:var(--gt-gold);margin-top:8px;font-size:1.2em;font-weight:700}