html, body {
    height: 100%;
    margin: 0;
    font-family: Arial, sans-serif;
}

.plano-fundo {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: url('/images/cabecalho.png');
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    height: 100%;
    width: 100%;
}

.retangulo-centralizado {
    display: flex;
    width: 80%;
    max-width: 800px;
    height: 300px;
    background-color: rgb(255 255 255 / 60%);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.conteudo-retangulo {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
}

.logo {
    max-width: 80%;
    height: auto;
}

.nome-sistema {
    font-size: 24px;
    color: #282829;
    font-weight: bold;
    text-align: center;
    word-break: break-word;
}

.versao-sistema {
    position: absolute;
    bottom: 10px;
    right: 20px;
    font-size: 13px;
}

@media (max-width: 480px) {
    .nome-sistema {
        font-size: 16px;
        padding: 0 10px;
    }
}