body{
    background:#111827;
    color:white;
    font-family:Arial;
}

.chat-container{
    width:600px;
    margin:40px auto;
}

.chat-header{
    background:#7c3aed;
    padding:15px;
    border-radius:10px;
}

.messages{
    min-height:500px;
    margin-top:10px;
    background:#1f2937;
    padding:15px;
    border-radius:10px;
}

.input-area{
    display:flex;
    margin-top:10px;
}

input{
    flex:1;
    padding:10px;
}

button{
    padding:10px 20px;
}