.ckboxLayout {
  height: 100vh;
  background: #fff;
  display: flex;
  flex-direction: column;

  .header {
    background: #1890ff;
    color: #fff;
    height: 64px;
    line-height: 64px;
    padding: 0 24px;
    font-size: 18px;
    font-weight: bold;
  }

  .verticalSider {
    background: #2e2e2e;
    border-right: 1px solid #3a3a3a;
    overflow: hidden;
  }

  .sider {
    background: #fff;
    border-right: 1px solid #f0f0f0;
    overflow: auto;
  }

  .sidebar {
    height: 100%;
    display: flex;
    flex-direction: column;

    .searchBar {
      padding: 16px;
      border-bottom: 1px solid #f0f0f0;
      background: #fff;

      :global(.ant-input) {
        border-radius: 20px;
        background: #f5f5f5;
        border: none;

        &:focus {
          background: #fff;
          border: 1px solid #1890ff;
          box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
        }
      }
    }

    .tabs {
      flex: 1;
      display: flex;
      flex-direction: column;

      :global(.ant-tabs-content) {
        flex: 1;
        overflow: hidden;
      }

      :global(.ant-tabs-tabpane) {
        height: 100%;
        overflow: hidden;
      }

      :global(.ant-tabs-nav) {
        margin: 0;
        padding: 0 16px;
        background: #fff;
        border-bottom: 1px solid #f0f0f0;

        :global(.ant-tabs-tab) {
          padding: 12px 16px;
          margin: 0;

          &:hover {
            color: #1890ff;
          }

          &.ant-tabs-tab-active {
            .ant-tabs-tab-btn {
              color: #1890ff;
            }
          }
        }

        :global(.ant-tabs-ink-bar) {
          background: #1890ff;
        }
      }
    }

    .emptyState {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      height: 200px;
      color: #8c8c8c;

      p {
        margin-top: 16px;
        font-size: 14px;
      }
    }
  }

  .mainContent {
    background: #f5f5f5;
    display: flex;
    flex-direction: column;
    overflow: auto;

    .chatContainer {
      height: 100%;
      display: flex;
      flex-direction: column;

      .chatToolbar {
        background: #fff;
        border-bottom: 1px solid #f0f0f0;
        padding: 8px 16px;
        display: flex;
        justify-content: flex-end;
        align-items: center;
        min-height: 48px;
      }
    }

    .welcomeScreen {
      flex: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #fff;

      .welcomeContent {
        text-align: center;
        color: #8c8c8c;

        h2 {
          margin: 24px 0 12px 0;
          color: #262626;
          font-size: 24px;
          font-weight: 600;
        }

        p {
          font-size: 16px;
          margin: 0;
        }
      }
    }
  }
}

// 响应式设计
@media (max-width: 768px) {
  .ckboxLayout {
    .sidebar {
      .searchBar {
        padding: 12px;
      }

      .tabs {
        :global(.ant-tabs-nav) {
          padding: 0 12px;

          :global(.ant-tabs-tab) {
            padding: 10px 12px;
          }
        }
      }
    }

    .mainContent {
      .chatContainer {
        .chatToolbar {
          padding: 6px 12px;
          min-height: 40px;
        }
      }

      .welcomeScreen {
        .welcomeContent {
          h2 {
            font-size: 20px;
          }

          p {
            font-size: 14px;
          }
        }
      }
    }
  }
}