@import url('https://fonts.googleapis.com/css?family=Josefin+Sans:300');
:root {
  --background1: #fff;
  --background2: #ddd;
  --color-hover: #000;
  --color-strong: #888;
  --color-light: #8888;
  --color-lighter: #8882;
  --opacity-low: .3;
  --gap: 10pt;
  --gap-hover: 2pt;
}
@media (prefers-color-scheme: dark) {
  :root {
    --background1: #000;
    --background2: #222;
    --color-hover: #fff;
  }
  #qr img {
    filter: invert(1);
  }
}


.hidden {
  display: none;
}
@media (max-width: 599px) {
  .hidden-on-mobile {
    display: none !important;
  }
}
.invisible {
  opacity: 0;
}

html, body, section:first-child {
  height: 100%;
}
body {
  margin: 0;
  font-family: 'Josefin Sans', sans-serif;
  user-select: none;
  animation: background-color ease-in-out 5s infinite alternate;
  color: var(--color-strong);
}
@keyframes background-color {
  from {
    background: var(--background1);
  }
  to {
    background: var(--background2);
  }
}


::-webkit-scrollbar {
  width: 8pt;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #8882;
}
::-webkit-scrollbar-thumb:hover {
  background: #8888;
}


u { /* background dots */
  position: absolute;
  background: var(--color-strong);
  display: block;
  border-radius: 50%;
}


section {
  display: flex;
}
section > div {
  margin: auto;
}


#front {
  font-size: 150%;
  font-weight: bold;
  position: relative;
  cursor: pointer;
  transition: font-size .5s;
}

#front b {
  color: var(--color-light);
  display: inline-block;
  text-align: center;
  padding: 0 var(--gap);
  transition: padding .5s, margin .5s, opacity .5s;
}
#front:hover b {
  --gap: var(--gap-hover);
}
#front b:nth-of-type(2) {
  position: relative;
  top: 0;
  animation: up-down 5s infinite;
}
#front:hover b:nth-of-type(2) {
  animation-play-state: paused;
}
#front i {
  font-style: normal;
  display: block;
  transition: opacity .5s ease;
}

#front i:first-child {
  opacity: var(--animate-opacity-up);
}
#front i:last-child {
  opacity: var(--animate-opacity-down);
}

#front:hover, #front:hover b {
  color: var(--color-hover);
}
#front:hover i:first-child {
  color: var(--animate-hover-color-up);
}
#front:hover i:last-child {
  color: var(--animate-hover-color-down);
}

@keyframes up-down {
  0%, 30%, 100% {
    top: 0;
    margin: 0;
    --animate-opacity-up: var(--opacity-low);
    --animate-opacity-down: 1;
    --animate-hover-color-up: var(--color-light);
    --animate-hover-color-down: var(--color-hover);
  }
  50%, 80% {
    top: 1em;
    margin: 0 -.4em;
    --animate-opacity-up: 1;
    --animate-opacity-down: var(--opacity-low);
    --animate-hover-color-up: var(--color-hover);
    --animate-hover-color-down: var(--color-light);
  }
}

#front span {
  position: absolute;
  right: 0;
  transform: translateX(10%);
  margin-top: 10pt;
  color: var(--color-strong);
  font-size: .8rem;
  font-weight: normal;
  padding: 5pt 10pt 3pt;
  border-radius: 2pt;
  border: 1px solid var(--color-lighter);
  display: block;
}
@media (min-width: 600px) {
  #front span {
    transform: translateX(50%);
    margin-top: -40pt;
    display: none;
  }
  #front:hover span {
    display: block;
  }
}


#links {
  padding: 0 0 20vh;
}
#links a {
  text-decoration: none;
  color: var(--color-strong);
}
#links a:hover {
  color: var(--color-hover);
  font-weight: bold;
}
#links a:not(:first-child) {
  margin-left: 10pt;
}


#qr {
  height: 100%;
}