/* 新增样式 */
   .connection-status {
    position: fixed;
    top: 10px;
    right: 10px;
    padding: 8px 15px;
    background: #ff4444;
    color: white;
    border-radius: 15px;
    z-index: 10000;
  }
  
  .connection-status.connected {
    background: #00C851;
  }
  
  .side-menu-trigger {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(127,128,127,0.7);
    padding: 10px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 9999;
  }
  
  .side-menu {
    position: fixed;
    left: -300px;
    top: 0;
    bottom: 0;
    width: 280px;
    background: rgba(255,255,255,0.95);
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    transition: all 0.3s;
    z-index: 10000;
  }
  
  .side-menu.active {
    left: 0;
  }
  
  .menu-header {
    display: flex;
    justify-content: space-between;
    padding: 15px;
    border-bottom: 1px solid #eee;
  }
  
  .close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
  }
  
  .connection-types {
    display: flex;
    padding: 10px;
  }
  
  .connection-types button {
    flex: 1;
    padding: 10px;
    border: none;
    background: #f0f0f0;
    cursor: pointer;
  }
  
  .connection-types button.active {
    background: #2196F3;
    color: white;
  }
  
  .menu-content {
    padding: 15px;
  }
  
 .usb-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
  }
  
 .usb-item button {
    margin-left: 5px;
    padding: 5px 10px;
    background: #2196F3;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
  }


  /* 新增样式 */
.connection-form {
    padding: 15px;
  }
  
  .form-group {
    margin-bottom: 15px;
  }
  
  .form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-size: 14px;
  }
  
  .form-input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
  }
  
  .connect-btn {
    width: 100%;
    padding: 10px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
  }
  
  .connect-btn:hover {
    background: #0056b3;
  }

  /* 输入组布局 */
.input-group {
    margin: 12px 0;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  
  .input-label {
    min-width: 80px;
    text-align: right;
    color: #fff;
  }
  
  .input-field {
    flex: 1;
    padding: 8px;
    border: 1px solid #666;
    border-radius: 4px;
    background: rgba(255,255,255,0.9);
  }
  
  /* 认证按钮组 */
  .auth-check {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    justify-content: flex-end;
  }
  
  .connect-btn {
    padding: 8px 20px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
  }
  
  .connect-btn:hover {
    background: #45a049;
  }