.message-user{margin-left:auto}.message-bot{margin-right:auto}@media (max-width: 768px){.message-bubble{font-size:14px}}thinking{display:block;margin-bottom:1em;margin-top:4px;font-style:italic;border-left:2px solid #ddd;padding-left:8px;font-size:.9em;line-height:1.5}