body{font-family:Arial;background:#eef7ff;margin:0;padding:0;}
.container{max-width:500px;margin:auto;background:white;padding:20px;border-radius:12px;margin-top:40px;box-shadow:0 0 10px #ccc;}
#chat-box{height:300px;overflow-y:auto;border:1px solid #ddd;padding:10px;margin-bottom:10px;}
.msg{padding:8px;margin:5px;border-radius:8px;}
.user{background:#d7edff;}
.bot{background:#fff3cd;}