:root {
    --logo-dark: url("/images/AEdark.png");
    --logo-light: url("/images/AElight.png");
    --pico-font-size: 100%;
}

@media only screen and (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --logo: var(--logo-dark);
    }
}

[data-theme="dark"] {
    --logo: var(--logo-dark);
}

[data-theme="light"] {
    --logo: var(--logo-light);
}

html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    justify-content: center; /* horizontal centering */
    align-items: center; /* vertical centering */
    min-height: 100vh; /* ensures full viewport height */
    text-align: center; /* optional, centers inline text */
}

main.container {
    display: flex;
    flex-direction: column; /* stacks logo and text vertically */
    align-items: center;
}