.maincontent {
    margin: 20px;
    color: rgb(202, 202, 202);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
.card {
    margin: 10px;
    width: 150px;
    height: auto;
    min-height: 230px;
    padding: 10px;
    background: rgba(31,30,30,255);
    box-shadow: 0 4px 8px rgba(0,0,0,0.4);
    border-radius: 5px;
    opacity: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.card:hover {
    transform: scale(1.05);
    cursor:pointer;
}
.card h2 {
    min-height: 50px;
    font-size: 20px;
    overflow-wrap: break-word;
}
.card img {
    max-width: 100px;
    max-height: 100px;
    margin-bottom: 15px;
    display: inline-block;
}
.card a {
    text-decoration: none;
    color: white;
}

/* Media Queries para responsividade */

/* Tablets em modo paisagem e grandes celulares - largura até 1024px */
@media (max-width: 1024px) {
    .card {
        width: 180px;
        min-height: 220px;
        padding: 12px;
    }
    .card h2 {
        font-size: 18px;
        min-height: 45px;
    }
    .card img {
        max-width: 90px;
        max-height: 90px;
    }
}

/* Tablets em modo retrato / celulares grandes - largura até 768px */
@media (max-width: 768px) {
    .card {
        width: 140px;
        min-height: 200px;
        padding: 10px;
    }
    .card h2 {
        font-size: 16px;
        min-height: 40px;
    }
    .card img {
        max-width: 80px;
        max-height: 80px;
        margin-bottom: 10px;
    }
}

/* Celulares médios - largura até 480px */
@media (max-width: 480px) {
    .card {
        width: 120px;
        min-height: 180px;
        padding: 8px;
    }
    .card h2 {
        font-size: 14px;
        min-height: 35px;
    }
    .card img {
        max-width: 70px;
        max-height: 70px;
        margin-bottom: 8px;
    }
}

/* Celulares pequenos - largura até 360px */
@media (max-width: 360px) {
    .card {
        width: 100px;
        min-height: 160px;
        padding: 6px;
    }
    .card h2 {
        font-size: 12px;
        min-height: 30px;
    }
    .card img {
        max-width: 60px;
        max-height: 60px;
        margin-bottom: 6px;
    }
}