body {
  background-color: #0d1117; /* dark theme */
  color: #c9d1d9;
  font-family: sans-serif;
  padding: 2rem;
}
.markdown-body {
  max-width: 900px;
  margin: auto;
  background-color: #0d1117;
  padding: 2rem;
  border-radius: 6px;
  border: 1px solid #30363d;
}
a {
  color: #58a6ff;
}
#backBtn {
  margin-bottom: 1rem;
  padding: 0.5rem 1rem;
  background-color: #161b22;
  color: #58a6ff;
  border: 1px solid #30363d;
  border-radius: 6px;
  cursor: pointer;
}
#backBtn:hover {
  background-color: #21262d;
}
ol li.active a {
  font-weight: bold;
  color: #f78166;
}
pre {
  position: relative;
}
.copy-container {
  position: absolute;
  top: 8px;
  right: 12px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  padding: 5px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 5px;
  gap: 10px;
}
.copy-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 100%;
  background-color: #1f252e; /* hover color */
  border-radius: 5px;
  transform: scaleX(0);
  transform-origin: right; /* change to right if you want right-to-left */
  transition: transform 0.3s ease;
  z-index: 0;
}
.copy-container:hover::before {
  transform: scaleX(1);
}
.copy-container svg {
  z-index: 1;
  transition: transform 0.3s ease;
}
.copy-text {
  z-index: 1;
  display: none;
  transition: transform 0.3s ease;
}

.copy-container:hover {
  background-color: #1f252e; /* slightly brighter/darker hover */
}
.copy-container:hover svg {
  transform: scale(1.15);
  transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}
.copy-container:hover .copy-text {
  display: inline-block;
}