/* 响应式CSS文件 - 适配手机设备 */

/* 移动设备断点 - 768px及以下 */
@media (max-width: 768px) {
  body {
    overflow-x: hidden;
  }

  /* 头部样式调整 */
  .header {
    padding: 15px 10px;
    height: 35px;
  }

  .header h1 {
    font-size: 14px;
    line-height: 35px;
  }

  .listen_btn span {
    padding: 8px 12px;
    font-size: 16px;
  }

  /* 主内容区域调整 */
  .main_content {
    flex-direction: column;
    margin: 10px;
    width: calc(100% - 20px);
    height: calc(100% - 100px);
  }

  /* 设备列表调整 */
  .device_list {
    flex: 0 0 auto;
    max-height: 150px;
    margin-bottom: 15px;
  }

  .device_list .device_list_title {
    font-size: 16px;
    margin: 15px 0 0 15px;
  }

  .device_list #device_list_ul {
    margin-top: 20px;
  }

  .device_list #device_list_ul .device_item {
    height: 40px;
    line-height: 40px;
    font-size: 14px;
    /* padding-left: 15px; */
  }

  /* 发送接收区域调整 */
  .send_receive_area {
    flex: 1;
    margin-left: 0;
    margin-top: 0;
  }

  .receive_area {
    padding: 15px;
    flex: 1;
    max-height: 50vh; /* 移动端最大高度为视口高度的50% */
  }

  .receive_area .receive_message .receive_area_header .receive_content {
    width: calc(100vw - 220px); /* 移动端调整最大宽度 */
  }

  .receive_area .receive_message {
    padding: 15px 0;
  }

  .receive_area .receive_message .receive_area_header {
    font-size: 16px;
    align-items: flex-start;
  }

  .receive_content .receive_hex,
  .receive_content .receive_ascii {
    font-size: 16px;
    line-height: 28px;
  }

  .receive_area .receive_message .receive_area_header .receive_avatar {
    width: 40px;
    height: 40px;
    margin-right: 15px;
  }

  .receive_area .receive_message .receive_time {
    font-size: 12px;
  }

  /* 发送区域调整 */
  .send_area {
    flex-direction: column;
    align-items: stretch;
    max-height: 160px;
    flex: .3;
  }

  .send_area .send_content {
    margin-bottom: 10px;
    padding: 15px;
  }

  .send_area .send_content .msg_type {
    flex: 0 0 60px;
    font-size: 16px;
    margin-right: 15px;
  }

  .send_area .send_content #send_text {
    font-size: 16px;
    padding-left: 15px;
    line-height: 24px;
  }

  .send_area #send_btn {
    flex: 0 0 45px;
    margin-left: 0;
    font-size: 20px;
  }

  /* 消息提示调整 */
  #message-container {
    left: 10px;
    right: 10px;
    transform: none;
    width: calc(100% - 20px);
  }

  .message {
    padding: 12px;
  }
}

/* 小屏手机断点 - 480px及以下 */
@media (max-width: 480px) {
  /* 进一步缩小字体和间距 */
  .header h1 {
    font-size: 12px;
  }

  .listen_btn span {
    font-size: 14px;
    padding: 5px 8px;
  }

  .device_list #device_list_ul .device_item {
    font-size: 13px;
  }

  .receive_content .receive_hex,
  .receive_content .receive_ascii {
    font-size: 14px;
  }

  .send_area .send_content #send_text {
    font-size: 14px;
    line-height: 18px;
  }

  .send_area #send_btn {
    font-size: 18px;
  }
}