@import url('https://fonts.googleapis.com/css2?family=Encode+Sans:wght@400;700;900&display=swap');

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

body {
    font-family: 'Encode Sans', sans-serif;
    background-color: #f0f0f0;
    color: #333;
}

header {
    background-color: #004aad;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 0;
}

header img {
    height: 80px;
}

.artigo-container {
    width: 90%;
    margin: 40px auto;
    background-color: #fff;
    padding: 30px 40px 50px 40px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-radius: 8px;
}

.artigo-titulo {
    font-size: 3rem;
    font-weight: 900;
    color: #1a1a1a;
    line-height: 1.2;
    margin-bottom: 15px;
}

.artigo-subtitulo {
    font-size: 1.2rem;
    font-weight: 400;
    color: #555;
    line-height: 1.5;
    margin-bottom: 25px;
}

.artigo-meta {
    border-top: 1px solid #e5e5e5;
    border-bottom: 1px solid #e5e5e5;
    padding: 10px 0;
    margin-bottom: 25px;
}

.info-autor {
    font-size: 0.9rem;
    color: #777;
}

.info-autor span {
    display: block;
    font-size: 0.8rem;
}

.imagem-principal {
    margin-bottom: 25px;
}

.imagem-principal img {
    width: 50%;
    margin: auto;
    display: block;
    height: auto;
    border-radius: 4px;
}

.imagem-principal figcaption {
    font-size: 0.85rem;
    color: #777;
    margin-top: 8px;
}

.corpo-artigo p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.corpo-artigo strong {
    font-weight: 700;
}

.corpo-artigo ul {
    list-style-position: inside;
    margin-left: 10px;
    margin-bottom: 20px;
}

.corpo-artigo li {
    line-height: 1.8;
}

.secao-topico {
    margin-top: 40px;
}

.secao-topico h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #83d1da;
    margin-bottom: 20px;
}

.link-externo {
    color: #3d81da;
    text-decoration: none;
    font-weight: 700;
}

.link-externo:hover {
    text-decoration: underline;
}

#btn-voltar {
    height: 50px;
    width: 50px;
    position: fixed;
    right: 20px;
    bottom: 20px;
}

@media (max-width:800px){
    .artigo-titulo {
    font-size: 2rem;
    }
    .imagem-principal img {
    width: 80%;
    }
}