/* Base styling */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: #333;
}
header {
    background-color: #007aff;
    color: white;
    padding: 1rem;
    text-align: center;
}
nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
}
nav li {
    margin: 0 0.5rem;
}
nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}
main {
    padding: 1rem;
}
section {
    margin-bottom: 2rem;
}
form {
    display: flex;
    flex-direction: column;
}
label {
    margin-bottom: 0.25rem;
}
input[type="text"],
input[type="email"] {
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
}
button {
    background-color: #007aff;
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: 4px;
    cursor: pointer;
}
button:hover {
    background-color: #005bb5;
}
footer {
    text-align: center;
    padding: 1rem;
    background-color: #ddd;
    position: fixed;
    width: 100%;
    bottom: 0;
}

/* Responsive - iPhone widths */
@media screen and (max-width: 480px) {
    nav ul {
        flex-direction: column;
    }
    nav li {
        margin: 0.25rem 0;
    }
    main {
        padding: 0.5rem;
    }
    form {
        width: 100%;
    }
}