body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:#f0f2f5;color:#333;margin:0;padding:20px;display:flex;justify-content:center;align-items:center;min-height:100vh}#root{width:100%;max-width:800px;background-color:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 4px #0000001a}h1,h2{color:#1c1e21}button{background-color:#1877f2;color:#fff;border:none;padding:10px 15px;border-radius:6px;cursor:pointer;font-size:16px;margin:5px}button:disabled{background-color:#a0a0a0;cursor:not-allowed}button:hover:not(:disabled){background-color:#166fe5}input[type=email],input[type=password],input[type=file]{width:calc(100% - 22px);padding:10px;margin-bottom:10px;border:1px solid #ddd;border-radius:6px}a{color:#1877f2;text-decoration:none}a:hover{text-decoration:underline}