body{
    margin:0;
    background:#050505;
    font-family:Arial,sans-serif;
}

.container{
    width:90%;
    max-width:900px;
    margin:auto;
    height:100vh;
    display:flex;
    flex-direction:column;
}

.header{
    background:#0a84ff;
    color:white;
    text-align:center;
    padding:15px;
    border-radius:0 0 15px 15px;
}

#chat{
    flex:1;
    overflow-y:auto;
    padding:20px;
}

.user{
    background:#0a84ff;
    color:white;
    padding:12px;
    margin:10px;
    border-radius:15px;
    max-width:70%;
    margin-left:auto;
}

.ai{
    background:#111;
    color:#ddd;
    padding:12px;
    margin:10px;
    border-radius:15px;
    border:1px solid #0a84ff;
    max-width:70%;
}

.input-area{
    display:flex;
    padding:15px;
}

input{
    flex:1;
    padding:15px;
    background:#111;
    border:1px solid #0a84ff;
    color:white;
    border-radius:10px;
}

button{
    margin-left:10px;
    padding:15px 25px;
    background:#0a84ff;
    border:none;
    color:white;
    border-radius:10px;
    cursor:pointer;
}