:root {
  --agui-layout-splitter-size: 3px;
  --agui-layout-splitter-color: black;
}

// override
.splitpanes__pane {
  // 禁用初始化时的动画
  transition: none !important;
}

// splitpanes
.splitpanes__pane {
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: Helvetica, Arial, sans-serif;
  color: rgba(255, 255, 255, 0.6);
  font-size: 1em;
}

.splitpanes__splitter {
  background-color: var(--agui-layout-splitter-color);
  position: relative;
}
.splitpanes__splitter:before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  transition: opacity 0.4s;
  background-color: rgba(0, 0, 0, 0.3);
  opacity: 0;
  z-index: 1;
}
.splitpanes__splitter:hover:before {
  opacity: 1;
}
.splitpanes--vertical > .splitpanes__splitter:before {
  left: calc(-1 * var(--agui-layout-splitter-size));
  right: calc(-1 * var(--agui-layout-splitter-size));
  height: 100%;
}
.splitpanes--horizontal > .splitpanes__splitter:before {
  top: calc(-1 * var(--agui-layout-splitter-size));
  bottom: calc(-1 * var(--agui-layout-splitter-size));
  width: 100%;
}