:root {
    --soft-color-rgba: rgba(var(--on-surface-color), 0.5);

    --font-family: "Letter Extended", Roboto Mono, monospace;

    --line-thickness: 1px;

    --animation-duration: 0.3s;
}

/* Color scheme */
:root {
    --primary-color: #03FCBAFF;
    /*--primary-variant-color: */
    /*--secondary-color: */
    /*--secondary-variant-color: */

    --primary-color-rgb: rgb(3, 252, 186);

    --background-color: white;
    --surface-color: white;
    --error-color: red;
    --on-primary-color: white;
    --on-secondary-color: black;
    --on-background-color: black;
    --on-surface-color: 0, 0, 0; /* black #000000 */
    --on-error-color: white;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #03FCBAFF;
        /*--primary-variant-color: */
        /*--secondary-color: */
        /*--secondary-variant-color: */

        --background-color: #181a1b;
        --surface-color: black;
        --error-color: red;
        --on-primary-color: black;
        --on-secondary-color: black;
        --on-background-color: white;
        --on-surface-color: 255, 255, 255; /* white #FFFFFF */
        --on-error-color: black;
    }
}

@media (prefers-color-scheme: dark) {
    .icon {
        filter: invert(100%);
    }
}

/* Main styling */
body {
    font-family: var(--font-family);

    line-height: 1.4rem;

    margin: 0;
    padding: 0;

    min-height: 100vh;

    display: flex;
    flex-direction: column;
    /* To show elements below each other */
    align-items: center;

    background-color: var(--background-color);
}

body.scroll-lock {
    /* To disable scrolling when a modal is open */
    overflow: hidden;
}

h1 {
    text-transform: uppercase;

    /*!* When wrapping to multiple lines, some padding between the lines *!*/
    line-height: 1;
}

h2 {
    text-transform: uppercase;

    border-bottom: var(--line-thickness) solid;
    padding-bottom: 0.2em;
    margin-bottom: inherit;

    /* When wrapping to multiple lines, some padding between the lines */
    line-height: 1;
}

a {
    text-underline-offset: 0.2em;
    text-decoration-thickness: var(--line-thickness);
    text-decoration-color: var(--soft-color-rgba);
}

a:link,
a:visited {
    color: unset;
}

button {
    font-family: var(--font-family), monospace;
    font-size: 1rem;

    display: block;
    width: 100%;
    padding: 0.5em 1em;

    background-color: var(--background-color);
    border: var(--line-thickness) solid;
    cursor: pointer;

    vertical-align: center;
}

.badge {
    max-height: 1em;

    vertical-align: middle;
    margin-left: 0.3em;
}

.wrapper {
    /* Wrapper to center the content */
    flex: 1;
    display: flex;
    flex-direction: column;
    /* To show elements below each other */
    align-items: center;
    justify-content: center;
}

.landing {
    text-align: center;
}

footer {
    max-width: 80%;
    bottom: 2vh;
    padding-bottom: 5%;

    opacity: 0.6;
    font-size: small;

    text-align: center;
}

.heart {
    color: #CD001A;
    /* Cherry red */
}

.quote {
    border-left: var(--line-thickness) solid var(--primary-color);
    padding-left: 10px;
    margin: 20px;
    text-align: left;
}

/* Custom details element */
details {
    padding-left: 2.1em;
}

summary {
    list-style: none;
}

details summary {
    display: flex;
}

details > summary::before {
    content: '[+]';
    cursor: pointer;
    margin-left: -2.1em;
    margin-right: 0.3em;
}

details[open] summary::before {
    content: '[−] ';
}

details[open] {
    /* When open, add some spacing below */
    margin-bottom: 1em;
}

details[open] table td {
    min-width: 1.5rem;
}

@media print {
    details,
    details summary::before {
        margin: initial;
        padding: initial;
    }

    /* Hide the [+] in print */
    details summary::before,
    details[open] summary::before {
        content: '';
    }
}

/* Show icons with links next to each other */
ul.links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

ul.links li {
    padding: 0 10px;
}

ul.links img {
    width: 40px;
    height: 40px;
}

ul.links a:hover {
    -webkit-filter: opacity(50%);
    -webkit-transition: all 0.5s ease;
    -moz-transition: all 0.5s ease;
    -o-transition: all 0.5s ease;
    -ms-transition: all 0.5s ease;
    transition: all 0.5s ease;
}

/* https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-reduced-motion */
@media (prefers-reduce-motion: no-preference) {
    /* URL animation on hover in footer
       Draw a line from left to right when hovering over the link */
    footer a {
        text-decoration: none;
        /* Reset to default text color */
        color: inherit;
        position: relative;
    }

    footer a::before {
        content: '';
        position: absolute;
        /* Height of the line */
        bottom: -2px;
        height: 2px;
        left: 0;
        width: 0;
        background-color: var(--primary-color);
        transition: width 0.3s ease;
    }

    footer a:hover::before {
        width: 100%;
    }
}

footer>button-collection {
    max-width: 100%;
}

@media (max-width: 600px) {
    footer {
        max-width: 100%;
    }
}

@media (min-height: 100vh) {
    .footer {
        position: static;
    }
}