body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f9f9f9;
}

header {
    background: #003366;
    color: #fff;
    padding: 1em;
    text-align: center;
}

nav {
    background: #006699;
    padding: 0.5em;
    text-align: center;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 1em;
}

.lang-toggle {
    float: right;
    margin-right: 10px;
}

.container {
    padding: 1.5em;
}

footer {
    background: #003366;
    color: #fff;
    padding: 1em;
    text-align: center;
    margin-top: 2em;
}

.section {
    margin-bottom: 2em;
}

.form-group {
    margin-bottom: 1em;
}

.form-group label {
    display: block;
    margin-bottom: 0.5em;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.5em;
}

button {
    padding: 0.7em 1.5em;
    background: #006699;
    color: #fff;
    border: none;
    cursor: pointer;
}