textarea { font-family: 'Courier New', monospace; font-size: 14px; background-color: #f9f9f9; }
h2 { font-weight: 600; }
.dark-mode body { background-color: #1e1e1e !important; color: #fff; }
.dark-mode textarea { background-color: #2d2d2d; color: #f1f1f1; }
pre.hljs { padding: 10px; border-radius: 5px; background: #f4f4f4; overflow-x: auto; }