body{background:#0f172a;color:white;font-family:Arial;margin:0;padding:20px}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.card{background:#1e293b;padding:20px;border-radius:10px}
button{padding:8px 14px;margin-top:10px;cursor:pointer}
input{width:100%;padding:8px;margin-bottom:10px}
a{color:#22d3ee;text-decoration:none}