*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;background:linear-gradient(135deg,#ff9a56,#ffad56);min-height:100vh;display:flex;align-items:center;justify-content:center}#app{text-align:center;padding:2rem}h1{color:#8b4513;font-size:2.5rem;margin-bottom:2rem;text-shadow:2px 2px 4px rgba(0,0,0,.1)}#game-board{display:grid;grid-template-columns:repeat(3,120px);grid-template-rows:repeat(3,120px);gap:8px;margin:2rem auto;background:#8b4513;padding:8px;border-radius:15px;box-shadow:0 8px 16px #0003}.cell{background:#fff8dc;border:none;font-size:3rem;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;border-radius:10px}.cell:hover:not(.filled){background:#ffe4b5;transform:scale(1.05)}.cell.filled{cursor:not-allowed}.cell.winning{background:#90ee90;animation:pulse .5s ease-in-out}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}#status{font-size:1.5rem;margin:1rem 0;color:#8b4513;font-weight:700}#reset-btn{background:tomato;color:#fff;border:none;padding:12px 30px;font-size:1.2rem;border-radius:25px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 8px #0003}#reset-btn:hover{background:#ff4500;transform:translateY(-2px);box-shadow:0 6px 12px #0000004d}@media (max-width: 480px){#game-board{grid-template-columns:repeat(3,100px);grid-template-rows:repeat(3,100px)}.cell{font-size:2.5rem}h1{font-size:2rem}}