body{
    margin:0;
    font-family:Arial;
    background:#0b1220;
    color:white;
}

.navbar{
    display:flex;
    justify-content:space-between;
    padding:15px;
    background:#111827;
}

.navbar a{
    color:white;
    margin:0 10px;
    text-decoration:none;
}

.container{
    padding:20px;
    text-align:center;
}

.grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
    gap:15px;
}

.card{
    background:#1f2937;
    padding:20px;
    border-radius:12px;
    transition:0.3s;
}

.card:hover{
    background:#22c55e;
    cursor:pointer;
}

.btn{
    display:inline-block;
    padding:10px 15px;
    background:#22c55e;
    border-radius:8px;
    color:white;
    text-decoration:none;
    margin:5px;
}

.lock{
    color:red;
    font-size:12px;
}