.credentials-form{background:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000001a}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:500;color:#333}.form-group input{width:100%;padding:12px;border:1px solid #ddd;border-radius:4px;font-size:16px;transition:border-color .2s}.form-group input:focus{outline:none;border-color:#4a90e2}.form-group input:disabled{background-color:#f5f5f5;cursor:not-allowed}.submit-button{width:100%;padding:12px;background-color:#4a90e2;color:#fff;border:none;border-radius:4px;font-size:16px;font-weight:500;cursor:pointer;transition:background-color .2s}.submit-button:hover:not(:disabled){background-color:#357abd}.submit-button:disabled{background-color:#ccc;cursor:not-allowed}.app-container{width:100%}.header{margin-bottom:20px;background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 10px #0000001a}.header h1{margin:0;color:#333;font-size:24px;text-align:center}.chat-id-info{background:#fff;padding:15px 20px;border-radius:8px;box-shadow:0 2px 10px #0000001a;margin-bottom:20px}.chat-id-info p{margin:0;color:#666}.chat-id-info strong{color:#333}.message{padding:12px;border-radius:4px;margin-bottom:20px}.message.success{background-color:#d4edda;color:#155724;border:1px solid #c3e6cb}.message.error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.loading{text-align:center;padding:40px;font-size:18px;color:#666}.error-container{background:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000001a;text-align:center}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5;min-height:100vh;display:flex;align-items:center;justify-content:center}#root{width:100%;max-width:500px;padding:20px}