:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}body{margin:0;padding:0;height:100vh;display:flex;align-items:center;justify-content:center;background:#f0f2f5;font-family:Segoe UI,sans-serif}.container{text-align:center;background:#fff;padding:40px;border-radius:12px;box-shadow:0 8px 20px #0000001a}h1{margin-bottom:20px;color:#333}.status{margin-bottom:20px;font-size:1.2rem;font-weight:500}.board{display:grid;grid-template-columns:repeat(3,100px);gap:10px;justify-content:center;margin-bottom:20px}.cell{width:100px;height:100px;background-color:#fff;border:2px solid #ccc;font-size:2.5rem;font-weight:700;color:#333;cursor:pointer;transition:background-color .3s,color .3s;display:flex;align-items:center;justify-content:center;border-radius:10px}.cell:hover{background-color:#f5f5f5}.cell.winning{background-color:#90ee90!important;color:#000}button{padding:10px 20px;font-size:1rem;background-color:#007bff;color:#fff;border:none;border-radius:6px;cursor:pointer;transition:background-color .3s}button:hover{background-color:#0056b3}