body{font:17px system-ui,sans-serif;background:#111827;color:#f3f4f6;margin:0}main{max-width:38rem;margin:auto;padding:1.3rem}label{display:block;margin-top:1rem}input,button{box-sizing:border-box;width:100%;padding:.8rem;font:inherit;margin-top:.4rem;border:1px solid #64748b;border-radius:.4rem}input{background:#fff;color:#111}button{background:#2563eb;color:white;margin-top:1.3rem}button:disabled,input:disabled{opacity:.5}p{line-height:1.5;font-size:.95rem}#status{font-weight:bold}