body{
    margin:0;
    background:#07131f;
    color:white;
    font-family:Arial,sans-serif;
}

.nextalk-app{
    display:flex;
    width:100%;
    height:100vh;
}

.nextalk-sidebar{
    width:340px;
    background:#08111d;
    overflow-y:auto;
    border-right:1px solid rgba(255,255,255,.08);
    padding:20px;
}

.nextalk-main-chat{
    flex:1;
    background:#0c1726;
    padding:20px;
}

.nextalk-card{
    width:95%;
    max-width:500px;
    margin:auto;
    margin-top:50px;
    background:rgba(15,25,40,.92);
    border-radius:24px;
    backdrop-filter:blur(18px);
    padding:30px;
    box-shadow:0 10px 40px rgba(0,0,0,.35);
}

.nextalk-input,
.nextalk-textarea,
.nextalk-chat-input{
    width:100%;
    margin-top:12px;
    padding:14px;
    border-radius:14px;
    border:1px solid rgba(255,255,255,.05);
    background:#122033;
    color:white;
}

.nextalk-button{
    background:#1ea7ff;
    border:none;
    color:white;
    padding:14px;
    border-radius:14px;
    margin-top:15px;
    cursor:pointer;
}

.nextalk-contact-card{
    display:flex;
    justify-content:space-between;
    align-items:center;
    background:#122033;
    padding:14px;
    border-radius:16px;
    margin-top:12px;
}

.nextalk-online{
    width:12px;
    height:12px;
    border-radius:50%;
    background:#00ff73;
}

.nextalk-id{
    color:#1ea7ff;
    font-weight:bold;
}

@media(max-width:768px){
    .nextalk-app{
        flex-direction:column;
    }

    .nextalk-sidebar{
        width:100%;
    }
}