pre {
  position: relative;
  margin: 20px 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid #333;
  font-size: 14px;
  line-height: 1.6;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  background: #1e1e1e;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: #2d2d2d;
  border-bottom: 1px solid #444;
}

.code-title {
  font-weight: 500;
  color: #ccc;
  font-size: 14px;
}

.code-copy-btn {
  padding: 3px 8px;
  font-size: 12px;
  color: #fff;
  background: #009e94;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
}
.code-copy-btn:hover {
  background: #007b7a;
}
.code-copy-btn.copied {
  background: #28a745;
}

pre code {
  display: block;
  padding: 16px;
  background: #1e1e1e;
  color: #d4d4d4;
  overflow-x: auto;
  white-space: pre;
}

.hl-comment { color: #6a9955; }
.hl-string  { color: #ce9178; }
.hl-keyword { color: #569cd6; }
.hl-variable{ color: #9cdcfe; }
.hl-func    { color: #dcdcaa; }
.hl-tag     { color: #4ec9b0; }