*{box-sizing:border-box;}

body{
  margin:0;
  font-family: "Segoe UI", Arial, sans-serif;
  background:#f1f4f9;
}

.chat-wrapper{
  width:100%;
  height:100vh;
  display:flex;
  flex-direction:column;
  background:#fff;
}

/* HEADER */
.chat-header{
  background:linear-gradient(135deg,#0d6efd,#084298);
  color:#fff;
  padding:15px;
  text-align:left;
}

/* BODY */
#chat-body{
  flex:1;
  padding:15px;
  overflow-y:auto;
  background:#f7f9fc;
}

/* MESSAGES */
.bot-msg{
  max-width:80%;
  background:#ffffff;
  padding:10px 14px;
  border-radius:12px 12px 12px 0;
  margin-bottom:10px;
  font-size:14px;
  box-shadow:0 2px 6px rgba(0,0,0,.08);
}

.user-msg{
  max-width:80%;
  background:#0d6efd;
  color:#fff;
  padding:10px 14px;
  border-radius:12px 12px 0 12px;
  margin-bottom:10px;
  margin-left:auto;
  font-size:14px;
}

/* INPUT */
.chat-input{
  display:flex;
  padding:10px;
  border-top:1px solid #ddd;
  background:#fff;
}

.chat-input input{
  flex:1;
  padding:10px;
  border:1px solid #ccc;
  border-radius:20px;
  outline:none;
}

.chat-input button{
  margin-left:8px;
  background:#0d6efd;
  color:#fff;
  border:none;
  padding:0 18px;
  border-radius:20px;
  cursor:pointer;
}