*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;min-height:100vh}.App{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.game{display:flex;flex-direction:column;align-items:center;background:#fff;border-radius:15px;padding:30px;box-shadow:0 10px 30px #0000004d;max-width:400px;width:100%}.game-info{margin-bottom:30px;text-align:center}.game-info h1{color:#333;margin-bottom:20px;font-size:2.5rem;font-weight:700}.status{font-size:1.5rem;font-weight:600;color:#555;margin-bottom:20px}.reset-button{background:linear-gradient(45deg,#667eea,#764ba2);color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.reset-button:hover{transform:translateY(-2px);box-shadow:0 5px 15px #0003}.game-board{display:flex;flex-direction:column;gap:5px}.board-row{display:flex;gap:5px}.square{width:80px;height:80px;border:3px solid #ddd;background:#f8f9fa;font-size:2rem;font-weight:700;cursor:pointer;transition:all .3s ease;border-radius:8px;color:#333}.square:hover{background:#e9ecef;border-color:#667eea;transform:scale(1.05)}.square:disabled{cursor:not-allowed}.square:contains("X"){color:#e74c3c}.square:contains("O"){color:#3498db}@media (max-width: 480px){.game{padding:20px;margin:10px}.square{width:60px;height:60px;font-size:1.5rem}.game-info h1{font-size:2rem}.status{font-size:1.2rem}}