div.highlight {
  position: relative;
  display: flex;
  border: 1px solid #eee;
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

div.highlight .custom-linenos {
  flex-shrink: 0;
  background: #fafafa;
  border-right: 1px solid #eee;
  color: #999;
  text-align: right;
  padding: 12px 8px;
  font-family: monospace;
  user-select: none;
  line-height: 1.5;
  white-space: pre;
  min-width: 36px;
}

html[data-theme="dark"] div.highlight .custom-linenos {
  background: #2a2a2a;
  border-right-color: #444;
  color: #aaa;
}

div.highlight pre {
  flex: 1;
  margin: 0;
  padding: 12px 16px;
  overflow-x: auto;
  white-space: pre;
  background: transparent;
  line-height: 1.5;
}

div.highlight pre.code-wrapped {
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: hidden;
}

.code-toolbar {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 6px;
  z-index: 50;
}

.code-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 4px;
  cursor: pointer;
  color: #666;
  transition: all 0.1s ease;
  width: 26px;
  height: 26px;
}
.code-icon-btn:hover {
  background-color: #f5f5f5;
  border-color: #ccc;
  color: #333;
}
.code-icon-btn.active {
  background-color: #e8f4e8;
  border-color: #8cc08c;
  color: #2d7d2d;
}

.copy-tooltip {
  position: fixed;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.9);
  color: #fff;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.15s ease, transform 0.15s ease;
  pointer-events: none;
  z-index: 9999;
}
.copy-tooltip.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(-3px);
}