* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: #f9f9f9;
    color: #333;
}

.barradenav {
    background-color: #333;
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
}

.barradenav .conteudo {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.barradenav .barradenav-fundo {
    color: #fff;
    font-size: 1.8rem;
    text-transform: uppercase;
    font-weight: 600;
    text-decoration: none;
    padding-left: 20px;
}

.barradenav .barradenav-links a {
    color: #fff;
    margin: 0 15px;
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.barradenav .barradenav-links a:hover {
    color: #007bff;
}


.principal {
    height: 100vh;
    background-color: #007bff;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
    position: relative;
}

.principal .principal-conteudo {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.principal .principal-img {
    width: 300px;
    border-radius: 50%;
    margin-bottom: 20px;
    transition: transform 0.5s ease;
}

.principal .principal-img:hover {
    transform: scale(1.1);
}

.principal h1 {
    font-size: 3rem;
    margin: 10px 0;
}

.principal .email-link {
    font-size: 1.2rem;
    color: #fff;
    text-decoration: none;
    margin-top: 10px;
    transition: color 0.3s ease;
}

.principal .email-link:hover {
    color: #ddd;
}

.section {
    padding: 80px 0;
}

.sobre-conteudo {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sobre-texto {
    width: 50%;
}

.sobre-texto h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.sobre-texto ul {
    list-style: none;
    padding-left: 0;
}

.sobre-img {
    width: 45%;
    border-radius: 8px;
}

.trabalhos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.trabalho-card {
    background-color: #f0f0f0;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.trabalho-card:hover {
    transform: translateY(-5px);
}

.linguagem-img {
    width: 80px;
    height: auto;
    margin-bottom: 10px;
}

.trabalho-card h4 {
    font-size: 20px;
    color: #333;
    margin: 10px 0;
}

.exercicios-lista {
    list-style: none;
    padding: 0;
}

.exercicios-lista li {
    margin: 6px 0;
}

.exercicios-lista a {
    text-decoration: none;
    color: #007BFF;
    font-weight: 500;
}

.exercicios-lista a:hover {
    color: #0056b3;
}




@media (max-width: 768px) {
    .barradenav .barradenav-links {
        display: none;
    }

    .principal .principal-conteudo {
        flex-direction: column;
    }

    .sobre-conteudo {
        flex-direction: column;
        text-align: center;
    }

    .sobre-img {
        width: 80%;
        margin-top: 20px;
    }

    .trabalhos-itens {
        flex-direction: column;
    }

    .trabalhos-item {
        width: 80%;
        margin-bottom: 20px;
    }
}