body{
background:#0f0f0f;
color:white;
font-family:Arial;
display:flex;
justify-content:center;
align-items:center;
height:100vh;
margin:0;
}

.chat-container{
width:420px;
background:#1a1a1a;
border-radius:10px;
display:flex;
flex-direction:column;
overflow:hidden;
}

h2{
text-align:center;
padding:15px;
margin:0;
border-bottom:1px solid #333;
}

#chatBox{
height:420px;
overflow-y:auto;
padding:15px;
}

.message{
margin-bottom:10px;
padding:8px 10px;
background:#2a2a2a;
border-radius:6px;
}

.input-area{
display:flex;
border-top:1px solid #333;
}

#messageInput{
flex:1;
padding:10px;
background:#1a1a1a;
border:none;
color:white;
outline:none;
}

#sendBtn{
padding:10px 15px;
background:#3ea6ff;
border:none;
color:white;
cursor:pointer;
}