#shan-chat-btn{position:fixed;bottom:20px;right:20px;background:#0a3cff;color:#fff;padding:14px;border-radius:50%;cursor:pointer;z-index:9999}
#shan-chat-box{display:none;position:fixed;bottom:80px;right:20px;width:360px;background:#fff;border-radius:12px;box-shadow:0 0 18px rgba(0,0,0,.3)}
#shan-header{background:#0a3cff;color:#fff;padding:12px;text-align:center;font-weight:bold}
#shan-messages{height:320px;overflow:auto;padding:10px;font-size:14px}
.bot{background:#f4f4f4;padding:8px;border-radius:6px;margin-bottom:6px}
.user{text-align:right;background:#0a3cff;color:#fff;padding:8px;border-radius:6px;margin-bottom:6px}
.shan-btn{display:inline-block;margin:6px 4px;padding:7px 12px;background:#0a3cff;color:#fff;border-radius:5px;text-decoration:none}
#shan-footer{text-align:center;padding:6px;border-top:1px solid #eee;font-size:12px}