.fullscreen-center{display:flex;justify-content:center;align-items:center;padding:30px 16px;min-height:100vh;background-color:#fefefe;box-sizing:border-box}.json-box{width:100%;max-width:800px;padding:20px;background:#fff;border-radius:8px;box-shadow:0 0 10px rgba(0,0,0,.08);text-align:center}textarea{width:100%;height:200px;font-family:monospace;padding:10px;font-size:14px;border-radius:5px;border:1px solid #ccc;margin-bottom:10px;resize:vertical}button{padding:8px 16px;margin-bottom:20px;background-color:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer}pre{text-align:left;background-color:#f4f4f4;padding:15px;white-space:pre-wrap;word-break:break-word;border-radius:6px;overflow-x:auto}.copy-icon{cursor:pointer;font-size:1.2rem;margin-left:10px;vertical-align:middle}