/**
 * PixelUI 浮动滚动条（仅视觉；不套用 PxScrollArea 布局）
 * 对齐 huaPixelUI --px-scrollbar-size / float 叠层行为
 */

:root {
  --px-scrollbar-size: 6px;
  --px-scrollbar-edge: 2px;
  /* 对齐 PixelUI 方角拇指；中灰在浅底/深底侧栏都可见 */
  --px-scrollbar-thumb: #8a8a8a;
  --px-scrollbar-thumb-hover: #5c5c5c;
}

/* 隐藏原生滚动条（页面 + 可滚动容器） */
html.px-sb-ready,
html.px-sb-ready body,
.px-sb-host {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html.px-sb-ready::-webkit-scrollbar,
html.px-sb-ready body::-webkit-scrollbar,
.px-sb-host::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.px-sb-host {
  position: relative;
}

/* 视口级（document）浮动条 */
.px-sb-doc-track {
  position: fixed;
  z-index: 9990;
  box-sizing: border-box;
  background: transparent;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
}

.px-sb-doc-track.is-visible,
.px-sb-doc-track.is-dragging {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.px-sb-doc-track--vertical {
  top: 0;
  right: var(--px-scrollbar-edge);
  bottom: 0;
  width: var(--px-scrollbar-size);
}

.px-sb-doc-track--horizontal {
  left: 0;
  right: 0;
  bottom: var(--px-scrollbar-edge);
  height: var(--px-scrollbar-size);
}

/* 容器内浮动条（几何由 JS fixed 贴合宿主） */
.px-sb-track {
  position: fixed;
  z-index: 9990;
  box-sizing: border-box;
  background: transparent;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
}

.px-sb-track.is-visible,
.px-sb-track.is-dragging {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.px-sb-track--vertical {
  width: var(--px-scrollbar-size);
}

.px-sb-track--horizontal {
  height: var(--px-scrollbar-size);
}

.px-sb-thumb {
  position: absolute;
  box-sizing: border-box;
  border-radius: 0;
  background: var(--px-scrollbar-thumb);
  cursor: default;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  touch-action: none;
  user-select: none;
}

.px-sb-thumb:hover,
.px-sb-track.is-dragging .px-sb-thumb {
  background: var(--px-scrollbar-thumb-hover);
}

.px-sb-doc-track--vertical .px-sb-thumb,
.px-sb-track--vertical .px-sb-thumb {
  top: 0;
  left: 0;
  width: 100%;
  min-height: 48px;
}

.px-sb-doc-track--horizontal .px-sb-thumb,
.px-sb-track--horizontal .px-sb-thumb {
  left: 0;
  top: 0;
  height: 100%;
  min-width: 24px;
}