/*
 * Mermaid 图表样式 - 一次性彻底解决黑色背景问题
 *
 * 解决方案：
 * 1. Hugo render hook 让 mermaid 不经过 chroma 高亮
 * 2. 白色包装器完全覆盖父容器背景
 * 3. CSS 确保所有元素背景正确
 */

/* === Mermaid 包装器：白色背景，覆盖所有黑色 === */
.mermaid-wrapper {
  background: #ffffff !important;
  padding: 2rem 1rem !important;
  margin: 2rem 0 !important;
  width: 100% !important;
  border-radius: 8px !important;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08) !important;
  box-sizing: border-box !important;
}

/* === Mermaid 容器本身 === */
.mermaid {
  text-align: center !important;
  background: transparent !important;
  display: block !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* === Mermaid 内部所有元素背景透明 === */
.mermaid,
.mermaid *,
.mermaid > *,
.mermaid svg,
.mermaid svg > *,
.mermaid g,
.mermaid g > *,
.mermaid text,
.mermaid path,
.mermaid rect,
.mermaid circle,
.mermaid ellipse,
.mermaid polygon,
.mermaid line,
.mermaid foreignObject {
  background: transparent !important;
  background-color: transparent !important;
}

/* === subgraph (cluster) 背景设置为浅灰 === */
.mermaid .cluster rect {
  fill: #fafafa !important;
  stroke: #e0e0e0 !important;
  stroke-width: 1px !important;
}

/* === 确保 SVG 图表居中 === */
.mermaid svg {
  display: block !important;
  margin: 0 auto !important;
}