* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

ul {
    list-style: none;
}

body {
    background-color: #000;
    overflow: hidden;
    transition: background-color 0.3s ease;
}

main::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    min-height: 100vh;
    width: 80vw;
    background: linear-gradient(-233deg, #000 40%, rgba(0, 0, 0, 0) 65%) no-repeat;
    transition: width 0.3s ease;
}

main .planeta {
    display: none;
    height: 100vh;
    transition: display 0.3s ease;
}

main .planeta.selecionado {
    display: block;
    transition: display 0.3s ease;
}

main .planeta .imagem {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: height 0.3s ease;
}

.conteudo {
    position: absolute;
    top: 0;
    left: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 100vh;
    max-width: 380px;
    z-index: 1;
    transition: top 0.3s ease, padding 0.3s ease;
}

.conteudo .nome-planeta {
    color: #fff;
    font-size: 48px;
    font-family: "Secular One";
    font-weight: 400;
    margin-bottom: 20px;
    transition: font-size 0.3s ease;
}

.conteudo .descricao {
    color: #fff;
    font-family: "Rubik";
    line-height: 24px;
    transition: font-size 0.3s ease, max-width 0.3s ease;
}

.conteudo .logo {
    background-image: url("../imagens/logotipo/logo-sistema-solar.png");
    background-size: cover;
    height: 110px;
    width: 160px;
    margin-bottom: 10px;
    transition: width 0.3s ease, height 0.3s ease;
}

/* Menu lateral */
.rodape-icones {
    width: auto;
    padding: 20px;
    text-align: left;
    background: transparent;
    position: absolute;
    bottom: 150px;
    left: 100px;
    z-index: 2;
}

.rodape-icones ul {
    display: flex;
    justify-content: flex-start;
    gap: 20px;
    padding: 0;
    margin: 0;
}

.rodape-icones .icone {
    width: 30px;
    height: 30px;
    filter: invert(100%);
    transition: transform 0.2s ease;
}

.rodape-icones .icone:hover {
    transform: scale(1.1);
}

.botoes {
    position: fixed;
    top: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 120px;
    gap: 15px;
    background-color: rgba(0, 0, 14, 0.233);
    z-index: 100;
    transition: flex-direction 0.3s ease, width 0.3s ease, gap 0.3s ease;
}

.botoes .botao {
    border: none;
    background: #000;
    cursor: pointer;
    border-radius: 50%;
    width: 55px;
    height: 55px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.botoes .botao img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.botoes .botao.selecionado {
    transform: scale(1.1);
    box-shadow: 0 0 10px #D9D9D9;
}

/* Responsividade */
@media (max-width: 1024px) {
    main::after {
        background: linear-gradient(0deg, #000 20%, rgba(0, 0, 0, 0) 65%) no-repeat;
        width: 100vw;
    }

    .conteudo {
        justify-content: flex-start;
        left: 60px;
        max-width: 100vw;
        padding: 20px;
        top: 150px;
    }

    .conteudo .nome-planeta {
        font-size: 36px;
    }

    .conteudo .descricao {
        max-width: 500px;
    }

    .botoes {
        flex-direction: row;
        width: 100%;
        margin-top: 90px;
    }

    .botoes .botao {
        width: 50px;
        height: 50px;
    }

    .rodape-icones {
        bottom: 20px;
        left: 350px;
        padding: 10px;
    }
}

@media (max-width: 720px) {
    .main .planeta .imagem {
        height: 85%;
    }

    .conteudo {
        justify-content: flex-start;
        left: 50px;
        max-width: 100vw;
        padding: 30px;
        top: 150px;
    }

    .conteudo .nome-planeta {
        font-size: 30px;
    }

    .conteudo .descricao {
        max-width: 450px;
    }

    .botoes {
        flex-direction: row;
        width: 100%;
        margin-top: 90px;
    }

    .botoes .botao {
        width: 45px;
        height: 45px;
    }

    .rodape-icones {
        bottom: 20px;
        left: 350px;
        padding: 10px;
    }
}

@media (max-width: 620px) {
    .main .planeta .imagem {
        height: auto;
    }

    .conteudo .logo {
        width: 100px;
        height: 60px;
    }

    .conteudo .nome-planeta {
        font-size: 20px;
    }

    .botoes {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        padding: 10px;
        width: 100%;
        margin-top: 90px;
    }

    .botoes .botao {
        width: 35px;
        height: 35px;
        flex: 0 0 calc(50% - 10px);
    }

    .rodape-icones {
        bottom: 20px;
        left: 200px;
        padding: 10px;
    }
}

@media (max-width: 425px) {
    .botoes .botao {
        width: 25px;
        height: 25px;
    }

    .rodape-icones {
        bottom: 20px;
        left: 128px;
        padding: 10px;
    }
}