body{color:#fff;background:#0f172a;margin:0;font-family:Arial,sans-serif}.container{text-align:center;margin-top:40px}.title h1{font-size:38px}.mode button{color:#fff;cursor:pointer;background:#3b82f6;border:none;border-radius:6px;margin:5px;padding:8px 15px}.mode button:hover{background:#2563eb}.score h2{font-size:32px}.buttons button{cursor:pointer;color:#fff;background:#22c55e;border:none;border-radius:8px;margin:10px;padding:12px 20px;font-size:16px}.buttons button:hover{background:#16a34a}.buttons button:disabled{cursor:not-allowed;background:gray}.reset button{cursor:pointer;color:#fff;background:#ef4444;border:none;border-radius:8px;margin-top:20px;padding:10px 20px}.reset button:hover{background:#dc2626}.history{max-height:200px;margin-top:30px;overflow-y:auto}.history-item{background:#1e293b;border-radius:6px;width:60%;margin:5px auto;padding:8px}