:root {
    --background-color: #f4f4f9;
    --text-color: #333;
    --link-color: #0070f3;
    --link-color-visited: #8928b3;
}

@media screen and (prefers-color-scheme: dark) {
    :root {
        --background-color: #1e1e2f;
        --text-color: #f4f4f9;
        --link-color: #4f81ff;
        --link-color-visited: #b3a1ff;
    }
}

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}

a {
    color: var(--link-color);
}

a:visited {
    color: var(--link-color-visited);
}

main {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    & form {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
}