* { margin: 0; padding: 0; box-sizing: border-box;

    /* Color scheme */

    --textcolor: #121212;
    --bgcolor: #fff;
    --highlight: #2749c9;
}

@media (prefers-color-scheme: dark) {
    * {
        --textcolor: #dadada;
        --bgcolor: #141414;
        --highlight: #ffc400;
    }
}

body {
    font-size: 18px;
    font-family: system-ui, sans-serif;
    line-height: 1.45;
    color: var(--textcolor);
    background: var(--bgcolor);
    position: relative;
    max-width: 64em;  /* remove this for a full-width layout */
    margin: 0 auto;  /* centers the layout */
}

@media only screen and (max-width: 680px) { /* smaller screens */
    body {
        font-size: 16px;
    }
}

/* ------- Sections ------- */

section {
    padding: calc(6em + 5vw) 5vw 8vw 5vw;
    /* !! Everything below is needed !! */
    display: none;
    position: absolute;
    top: 0;
    min-height: 100vh;
    width: 100%;
    background: var(--bgcolor);
}

section:target { /* Show section */
    display: block;
}

section#home { /* Show #home by default */
    display: block;
}

/* ------- Header ------- */

header {
    padding: 5vw 5vw 0 5vw;
    display: flex;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

header h1 {
    font-size: 1em;
    flex: 1;
    white-space: nowrap;
    padding: 0 20vw .5em 0;
}

nav a:not(:last-of-type) {
    margin-right: 1.5vw;
}

/* ------- General ------- */

a {
    text-decoration: none;
    color: var(--highlight);
}

a:hover {
    border-bottom: 1px solid;
}

h2, h3, h4 {
    font-size: 1em;
    font-weight: 600;
    margin: 1.6em 0 .6em 0;
}

p, ul, ol, article {
    max-width: 60ch; /* Limit line-length to 60 characters */
    margin-bottom: .6em;
}

ul {
    list-style-type: none;
}

ul li::marker {
    content: "\2022   ";
}

li {
    margin-bottom: .2em;
}

ul, ol {
    padding-left: 2ch;
}

b, strong {
    font-weight: 600;
}

small {
    font-size: .85em;
}

hr {
    height: 1px;
    border: 0;
    background: currentColor;
    opacity: .1;
    margin: 1.2em 0;
}

abbr {
    text-decoration: none;
}

abbr[title]:hover {
    opacity: .7;
    cursor: help;
}

blockquote {
    padding-left: 2ch;
    opacity: .7;
    margin-bottom: .6em;
    position: relative;
}

blockquote:before {
    content: "";
    position:absolute;
    left: 0;
    top: .3em;
    bottom: .3em;
    background: currentColor;
    width: 1px;
    opacity: .2;
}

img, svg, video, audio {
    display: block;
    max-width: 100%;
    height: auto;
    fill: currentColor;
}

code, pre, textarea {
    font-family: ui-monospace, SF Mono, Menlo, Monaco, Andale Mono, monospace;
    font-size: 1em;
    opacity: .7;
}

a code {
    opacity:1;
}

textarea { /* for code samples */
    font-size: .9em;
    color: inherit;
    line-height:inherit;
    padding:.6em .9em;
    margin: .8em 0 1em 0;
    position: relative;
    display: block;
    width: 100%;
    white-space: pre;
    border:0;
    border-radius: 4px;
    background:rgba(255,255,100,.075);
    box-shadow: inset 1px 1px 0 rgba(0,0,0,.2), inset -1px -1px 0 rgba(0,0,0,.04) ;
}

/* Inline footnotes */

label {
    cursor: pointer;
    vertical-align: super;
    line-height: 1;
    font-size: .75em;
    padding-left: .1em;
}

label:hover {
    color: var(--highlight);
}

label:before {content:"[";}
label:after {content:"]";}

label + input,
label + input + small {
    display: none;
}

input:checked + small {
    display: block;
    padding: .8em 0 1em 2.5vw;;
}

/* Figures */

figure {
    margin: 2em 0 1.5em 0;
}

figure figcaption {
    margin: 0.8em 0 0 0;
    font-size: .85em;
    opacity: .7;
}

/* Responsive video embeds */

figure.video {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
}

figure.video iframe, figure.video object, figure.video embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    visibility: hidden; /* so loading="lazy" should work? */
}

section:target iframe {
    visibility: visible;
}

/* External links */

a[href*="//"]:after { 
    font-weight: 300;
    content: "\2197"; /* top right arrow: ↗ */
    color: var(--textcolor);
    opacity: .25;
}

a[href*="//"]:hover:after {
    color: var(--highlight);
    opacity: 1;
}

/* File links */

a:before { 
    font-size: .7em;
    margin-right: .4em;
}

/* Add more filetypes here if you want */

a[href$=".pdf"]:before { content: "PDF"; }
a[href$=".txt"]:before { content: "TXT"; }
a[href$=".mp3"]:before { content: "MP3"; }
a[href$=".jpeg"]:before,
a[href$=".jpg"]:before,
a[href$=".gif"]:before,
a[href$=".png"]:before { content: "IMG"; }

/* ------- News ------- */

article + article {
    margin-top: 5em;
}

article h1 {
    font-size: 1em;
    font-weight:700;
    margin-bottom: 1em;
}

article time {
    margin-left: .6em;
    font-size: .8em;
    font-weight: 400;
    opacity: .7;
}

/* ------- Images Grid ------- */

.grid {
    display: grid;
    grid-gap: 5vmin;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    grid-auto-flow: dense;
    padding: 2em 0;
}

.grid a {
    position: relative;
    border: 0;
}

.grid a:before {
    content: "";
    display: block;
    padding-top: 100%;
}

.grid a img {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.grid a:hover {
    transform: scale(.975);
}

/* ------- Slideshow ------- */

.slides {
    position:fixed;
    top:0;
    left:0;
    right:0;
    bottom:0;
    overflow-y:scroll;
    scroll-snap-type:y mandatory;
}

.slides figure {
    height:100vh;
    padding:0 5vw;
    margin:0;
    display:grid;
    place-items:center;
    align-content: center;
    scroll-snap-align:center;
    background-size: cover; /* Full bleed background images */
    background-position: center center;
}

.slides figure img {
    max-height:88vh;
}

/* ------- Lightbox ------- */

.lightbox {
    position: fixed;
    display: none;
    color: var(--textcolor);
}

.lightbox:target {
    top: 0;
    right: 0;
    left: 0;
    height: 100vh;
    display: grid;
    place-items: center;
    align-content: center;
    background: var(--bgcolor);
    border: 0;
    z-index: 3;
}

.lightbox img {
    max-height: 100vh;
    z-index: 4;
}

.lightbox:target:before { /* Loading spinner */
    content:"";
    height: 2em;
    width: 2em;
    animation: spin .8s infinite linear;
    border: 1px solid;
    border-right-color: transparent;
    border-radius: 50%;
    display: block;
    position: absolute;
    transform: translateX(-50%);
    opacity: .25;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.lightbox:target:after { /* × to close */
    content: "\00D7";
    position: fixed;
    font-size: 2em;
    font-weight: 200;
    line-height: 0;
    top: .75em;
    right: .5em;
    z-index: 4;
}

/* ------- Print ------- */

@media print {
    nav, .lightbox:target:after { display: none; }

    article, figure, img {
        page-break-inside: avoid;
        break-inside: avoid;
    }

    /* Inline footnotes */
    label + input + small { display: inline; }
    label + input + small:before { content: "["; }
    label + input + small:after { content: "]"; }
}