body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f5f5;
    color: #222;
}

header {
    background: #111;
    color: white;
    text-align: center;
    padding: 40px 20px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

section {
    max-width: 850px;
    margin: 40px auto;
    padding: 0 20px;
}

h2 {
    border-left: 5px solid #111;
    padding-left: 10px;
}

#habilidades ul {
    list-style: square;
}

.card {
    background: white;
    padding: 20px;
    margin: 20px 0;
    border-radius: 8px;
    border: 1px solid #ddd;
}

.card h3 {
    margin-top: 0;
}

.card a {
    display: inline-block;
    margin-top: 10px;
    padding: 8px 14px;
    background: #111;
    color: white;
    text-decoration: none;
    border-radius: 6px;
}

.card a:hover {
    background: #333;
}

footer {
    text-align: center;
    padding: 20px;
    background: #111;
    color: white;
    margin-top: 40px;
}