:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --header-bg: #333;
    --header-text: #fff;
    --footer-bg: #333;
    --footer-text: #fff;
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --header-bg: #000;
    --header-text: #ddd;
    --footer-bg: #000;
    --footer-text: #ddd;
}

body {
    font-family: sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
}

header {
    background-color: var(--header-bg);
    color: var(--header-text);
    padding: 1rem;
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    margin: 0;
}

main {
    padding: 1rem;
    margin-bottom: 4rem; /* Space for fixed footer */
}

footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 1rem;
    text-align: center;
    position: fixed;
    bottom: 0;
    width: 100%;
}

hairstyle-recommender {
    display: block;
    margin-top: 2rem;
}

#theme-toggle {
    background: none;
    border: 1px solid var(--header-text);
    color: var(--header-text);
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 4px;
}

#theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}