:root {
    --background-dark: #333333;
    --header-dark: #121212;
    --footer-dark: #121212;
    --background-light: #e6e6e6;
    --text-dark: #ffffff;
    --text-light: #000000;
}

body {
    font-family: 'JetBrains Mono', monospace;
    background-color: var(--background-dark);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
}

header {
    padding: 1rem;
    text-align: center;
    background-color: var(--header-dark);
    color: white;
    position: relative;
}

.toggle-button {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem;
    cursor: pointer;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
}

main {
    padding: 2rem;
    text-align: center;
}

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

.light-mode {
    background-color: var(--background-light);
    color: var(--text-light);
}

.toggle-button:hover {
    opacity: 0.7;
}

a:link {
    color: green;
    background-color: transparent;
    text-decoration: none;
}

a:visited {
    color: mediumpurple;
    background-color: transparent;
    text-decoration: none;
}

a:hover {
    color: red;
    background-color: transparent;
    text-decoration: underline;
}

a:active {
    color: yellow;
    background-color: transparent;
    text-decoration: underline;
}