.chat-shell{max-width:900px;margin:1.5rem auto;background:#fff;border-radius:22px;box-shadow:0 .5rem 2rem rgba(0,0,0,.1);overflow:hidden}.chat-header{padding:1rem 1.25rem;background:linear-gradient(135deg,#163a70,#285aa6);color:#fff}.chat-messages{height:min(62vh,620px);overflow:auto;padding:1.25rem;background:#f4f7fb}.message{display:flex;margin-bottom:1rem}.message.user{justify-content:flex-end}.bubble{max-width:78%;padding:.8rem 1rem;border-radius:18px;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.06)}.user .bubble{background:#285aa6;color:#fff;border-bottom-right-radius:5px}.bot .bubble{border-bottom-left-radius:5px}.message-time{font-size:.72rem;opacity:.7;margin-top:.35rem}.quick-replies{display:flex;gap:.5rem;overflow:auto;padding:.8rem 1rem;background:#fff}.chat-composer{padding:1rem;background:white;border-top:1px solid #e6eaf0}.typing{display:none}.feedback-actions button{font-size:.78rem}@media(max-width:576px){.chat-shell{margin:0;border-radius:0}.chat-messages{height:65vh}.bubble{max-width:88%}}