*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;justify-content:center;align-items:center}.game{text-align:center;background:#fff;padding:2rem;border-radius:16px;box-shadow:0 10px 40px rgba(0,0,0,.2)}h1{margin:0 0 1rem;color:#333;font-size:2rem}.status{font-size:1.25rem;margin-bottom:1rem;color:#555;font-weight:500}.status.winner{color:#22c55e}.board{display:grid;grid-template-columns:repeat(3,80px);grid-template-rows:repeat(3,80px);grid-gap:8px;gap:8px;margin:0 auto;width:-moz-fit-content;width:fit-content}.square{width:80px;height:80px;font-size:2.5rem;font-weight:700;background:#f3f4f6;border:none;border-radius:8px;cursor:pointer;transition:all .15s ease;color:#333}.square:hover{background:#e5e7eb;transform:scale(1.05)}.square.winning{background:#86efac;color:#166534}.reset{margin-top:1.5rem;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;background:#667eea;color:#fff;border:none;border-radius:8px;cursor:pointer;transition:background .15s ease}.reset:hover{background:#5a67d8}