*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial,sans-serif;
}

body{
    background:#f5f7fb;
}

#chatbot{
    width:380px;
    height:650px;
    background:#fff;
    position:fixed;
    right:25px;
    bottom:25px;
    border-radius:15px;
    overflow:hidden;
    box-shadow:0 15px 40px rgba(0,0,0,.25);
    display:flex;
    flex-direction:column;
}

.header{
    background:#0057B8;
    color:white;
    padding:18px;
    font-size:20px;
    font-weight:bold;
}

#messages{
    flex:1;
    padding:15px;
    background:#f4f6f9;
    overflow-y:auto;
}

.bot{
    background:white;
    padding:12px;
    border-radius:12px;
    margin-bottom:12px;
    max-width:85%;
    box-shadow:0 2px 8px rgba(0,0,0,.08);
}

.input-area{
    display:flex;
    padding:12px;
    border-top:1px solid #ddd;
    background:white;
}

#message{
    flex:1;
    padding:12px;
    border:1px solid #ccc;
    border-radius:8px;
    font-size:15px;
}

#send{
    margin-left:10px;
    background:#0057B8;
    color:white;
    border:none;
    padding:12px 20px;
    border-radius:8px;
    cursor:pointer;
}
.user{
    background:#0057B8;
    color:white;
    padding:12px;
    border-radius:12px;
    margin-bottom:12px;
    margin-left:auto;
    max-width:80%;
}

.bot{
    background:white;
    padding:12px;
    border-radius:12px;
    margin-bottom:12px;
    max-width:80%;
}
.user{
    background:#0057B8;
    color:white;
    padding:12px;
    border-radius:12px;
    margin:10px 0;
    max-width:85%;
    margin-left:auto;
    text-align:right;
}

.bot{
    background:white;
    color:#222;
    padding:12px;
    border-radius:12px;
    margin:10px 0;
    max-width:85%;
    box-shadow:0 2px 8px rgba(0,0,0,.08);
}