* {
  font-family: 'Roboto', sans-serif;
}


/* =========================
   ESTILO DO MAIN
========================= */
main {
    display: flex;
    flex-direction: column;    
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 4.375rem); /* 70px */
    background-color: #161616;
    background-repeat: no-repeat;
    background-position: center right;
    background-size: auto;
    color: white;
    text-align: center;
    padding: 5rem 0 10rem 0;
}

main h1 {
    margin-bottom: 1rem;
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: 0.0625rem;
}

main p {
    max-width: 45rem;
    line-height: 1.8;
    font-size: 1rem;
    color: #e0e0e0;
}

/* =========================
   CONTAINER DE CARDS
========================= */
.cards-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
    gap: 2rem;
    margin-top: 2rem;
    width: 100%;
    max-width: 75rem; /* 1200px */
    padding: 0 1rem;
}

/* =========================
   CARD INDIVIDUAL
========================= */
.card {
    flex: 1 1 17.5rem; /* 280px */
    max-width: 18.75rem; /* 300px */
    height: 17.5rem; /* 280px */
    background-color: #fdfdfd;
    border-radius: 0.75rem; /* 12px */
    overflow: hidden;
    text-align: center;
    color: black;
    box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-0.375rem); /* 6px */
    box-shadow: 0 0.5rem 1.125rem rgba(0, 0, 0, 0.6);
}

/* =========================
   IMAGEM DO CARD
========================= */
.card img {
    width: 100%;
    height: 12.5rem; /* 200px */
    object-fit: cover;
    display: block;
}

/* =========================
   TÍTULO DO CARD
========================= */
.card h2 {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    font-size: 1.2rem;
    font-weight: 700;
    color: #111;
    transition: color 0.3s;
}

.card:hover h2 {
    color: #008b8b;
}

/* =========================
   RESPONSIVIDADE
========================= */

/* Tablets grandes */
@media (max-width: 64rem) { /* 1024px */

    main{
        padding-top: 5rem;
    }

    main h1 {
        font-size: 3rem;
    }

    main p {
        max-width: 38rem;
    }

    .cards-container {
        gap: 1.5rem;
    }

    .card {
        flex: 1 1 15rem; /* 240px */
        height: 20rem; /* 320px */
    }

    .card img {
        height: 11.25rem; /* 180px */
    }

    .card h2 {
        font-size: 1.1rem;
    }
}

/* Tablets pequenos / mobile landscape */
@media (max-width: 48rem) { /* 768px */

    main{
        padding-top: 12rem;
    }

    main h1 {
        font-size: 2.5rem;
    }

    main p {
        max-width: 30rem;
        font-size: 1rem;
    }

    .cards-container {
        gap: 1rem;
    }

    .card {
        flex: 1 1 12.5rem; /* 200px */
        height: 18.75rem; /* 300px */
    }

    .card img {
        height: 10rem; /* 160px */
    }

    .card h2 {
        font-size: 1rem;
    }
}

/* Mobile portrait */
@media (max-width: 30rem) { /* 480px */
    main{
        margin-top: 6rem;
    }

    main {
        padding-top: 6rem;
    }

    main h1 {
        font-size: 2rem;
    }

    main p {
        max-width: 90%;
        font-size: 0.9rem;
    }

    .cards-container {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .card {
        flex: 1 1 100%;
        max-width: 17.5rem; /* 280px */
        height: auto;
    }

    .card img {
        height: 10rem; /* 160px */
    }

    .card h2 {
        font-size: 1rem;
        padding: 1rem 0;
    }
}

@media (max-width: 20rem) { /* 320px */
    main {
        padding-top: 5rem;
    }

    main h1 {
        font-size: 1.6rem;
        margin-bottom: 1rem;
    }

    main p {
        max-width: 90%;
        font-size: 0.8rem;
        line-height: 1.4;
    }

    .cards-container {
        flex-direction: column;
        align-items: center;
        gap: 0.8rem;
        padding: 0 0.5rem;
    }

    .card {
        flex: 1 1 100%;
        max-width: 15rem; /* ~240px */
        height: auto;
        border-radius: 0.6rem;
        box-shadow: 0 0.2rem 0.6rem rgba(0, 0, 0, 0.5);
    }

    .card img {
        height: 9rem; /* ~144px */
    }

    .card h2 {
        font-size: 0.9rem;
        padding: 0.8rem 0;
    }
}