body{margin:0;font-family:Arial;background:#0f172a;color:white}
.nav{position:fixed;bottom:0;width:100%;background:#020617;display:flex;justify-content:space-around;padding:10px}
.container{padding:20px;padding-bottom:80px}
.card{background:#1e293b;padding:10px;margin:10px 0;border-radius:10px}
.chat{height:300px;overflow:auto;background:#020617;padding:10px;border-radius:10px}
button{background:#38bdf8;border:none;padding:8px;color:white;border-radius:6px}