html, body {
  height: 100%;
  background: #f5f5f5;
  transition: background 0.3s, color 0.3s;
}
body.dark {
  background: #1e1e1e;
  color: #eee;
}
.mdui-appbar-fixed {
  z-index: 100;
}
.mdui-drawer {
  top: 64px;
  z-index: 90;
}
.mdui-card {
  margin-bottom: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
body.dark .mdui-card {
  background: #2d2d2d;
  color: #eee;
}
.mdui-typo h1,
.mdui-typo h2,
.mdui-typo h3,
.mdui-typo h4 {
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}
.mdui-typo p {
  line-height: 1.8;
}
pre code {
  border-radius: 6px;
  padding: 1em;
}
body.dark pre code {
  background: #262626;
}
.doc-toc {
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  margin-bottom: 1rem;
}
body.dark .doc-toc {
  background: #2a2a2a;
}
.doc-toc a {
  display: block;
  padding: 4px 0;
  color: #333;
  text-decoration: none;
}
body.dark .doc-toc a {
  color: #eee;
}
.doc-toc a:hover {
  color: #3f51b5;
}
#back-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: none;
  z-index: 80;
}