/* Copy button */
.copy-code-wrapper {
  display: inline-flex;
  align-items: flex-start;
  gap: 6px;
}

.copy-code-btn {
  flex-shrink: 0;
  padding: 2px 8px;
  font-size: 12px;
  line-height: 1.4;
  border: 1px solid #d0d0d0;
  border-radius: 4px;
  background: #f5f5f5;
  color: #555;
  cursor: pointer;
  white-space: nowrap;
}

.copy-code-btn:hover {
  background: #e8e8e8;
  border-color: #b0b0b0;
}

.copy-code-btn.copied {
  background: #e6f9e6;
  border-color: #4caf50;
  color: #2e7d32;
}

/* Page TOC */
.page-toc {
  position: fixed;
  top: 80px;
  right: 24px;
  width: 220px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  font-size: 13px;
  line-height: 1.5;
  z-index: 10;
}

.page-toc-title {
  font-size: 11px;
  font-weight: 700;
  color: #999;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.page-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid #e8e8e8;
}

.page-toc li {
  margin: 0;
  padding: 0;
}

.page-toc a {
  display: block;
  padding: 3px 0 3px 12px;
  color: #999;
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color 0.15s, border-color 0.15s;
}

.page-toc a:hover {
  color: #333;
}

.page-toc a.active {
  color: #1fbad6;
  border-left-color: #1fbad6;
}

.page-toc .page-toc-h3 a {
  padding-left: 24px;
  font-size: 12px;
}

.book .page-wrapper {
  padding-right: 260px;
}

@media (max-width: 1240px) {
  .page-toc {
    display: none;
  }
  .book .page-wrapper {
    padding-right: 0;
  }
}