/* Tema claro */
body {
    font-family: Biondi, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: #333;
}

/* Tema oscuro */
body.dark {
    background-color: #333;
    color: #f5f5f5;
}

header {
    background: #5A8E7E;
    color: white;
    padding: 10px 0;
    text-align: center;
    position: relative;
}

header button {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    background: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 20px;
}

.responsive {
    max-width: 100%;
    height: auto;
}

form {
    display: flex;
    flex-direction: column;
}

form label {
    margin: 10px 0 5px;
}

form input, form textarea, form button {
    padding: 10px;
    margin-bottom: 10px;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
}