.workflow-designer {
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #f5f5f5;

  .toolbar {
    height: 50px;
    background: #fff;
    border-bottom: 1px solid #e8e8e8;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;

    .toolbar-left, .toolbar-right {
      display: flex;
      align-items: center;
    }
  }

  .main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
  }

  .node-panel {
    width: 220px;
    background: #fff;
    border-right: 1px solid #e8e8e8;
    overflow-y: auto;

    .panel-title {
      padding: 12px 16px;
      font-weight: 600;
      border-bottom: 1px solid #e8e8e8;
    }

    .node-category {
      .category-title {
        padding: 8px 16px;
        font-size: 12px;
        color: #999;
        background: #fafafa;
      }

      .node-list {
        padding: 8px;
      }

      .node-item {
        display: flex;
        align-items: center;
        padding: 8px 12px;
        margin-bottom: 8px;
        background: #fff;
        border: 1px solid #e8e8e8;
        border-radius: 4px;
        cursor: grab;
        transition: all 0.2s;

        &:hover {
          box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        i {
          font-size: 18px;
          margin-right: 8px;
        }

        span {
          font-size: 13px;
        }
      }
    }
  }

  .canvas-container {
    flex: 1;
    position: relative;
    overflow: auto;

    .canvas-svg {
      min-width: 100%;
      min-height: 100%;
      cursor: grab;

      &.dragging-canvas {
        cursor: grabbing;
      }

      .node-group {
        cursor: move;

        rect {
          transition: stroke-width 0.2s;

          &.selected {
            stroke-width: 3;
          }
        }

        .node-content {
          display: flex;
          align-items: center;
          height: 100%;
          padding: 0 10px;
          overflow: hidden;

          i {
            font-size: 16px;
            margin-right: 6px;
            flex-shrink: 0;
          }

          .node-name {
            font-size: 12px;
            color: #333;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            flex: 1;
            min-width: 0;
          }
        }

        .anchor {
          opacity: 0;
          cursor: crosshair;
          transition: opacity 0.2s;
        }

        &:hover .anchor {
          opacity: 1;
        }
      }

      .edge-group {
        cursor: pointer;

        path {
          transition: stroke-width 0.2s;

          &.selected {
            stroke-width: 3;
          }
        }
      }
    }
  }

  .property-panel {
    width: 280px;
    background: #fff;
    border-left: 1px solid #e8e8e8;
    overflow-y: auto;

    .panel-title {
      padding: 12px 16px;
      font-weight: 600;
      border-bottom: 1px solid #e8e8e8;
      display: flex;
      justify-content: space-between;
      align-items: center;

      .el-icon-close {
        cursor: pointer;
        color: #999;

        &:hover {
          color: #333;
        }
      }
    }

    .el-form {
      padding: 16px;
    }
  }
}