.code-block-container {
  background: #f8f8f8;
  border: 1px solid #ddd;
  border-radius: 4px;
  margin: 1.5em 0;
  position: relative;
}
.code-block-container pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-family: 'Source Code Pro', monospace;
  font-size: 0.95em;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: #2980b9;
  color: white;
  border: none;
  padding: 4px 10px;
  border-radius: 3px;
  font-size: 0.85em;
  cursor: pointer;
}
.copy-btn:hover { background: #1c5980; }