@charset "UTF-8";
:root {
  /* color defaults */
  --brand-blue: #05a6f0;
  --brand-yellow: #ffba08;
  --brand-red: #f35325;
  --brand-green: #81bc06;
  --white: #ffffff;
  --off-white: #bbb;
  --dark-grey: #121212;
  /* typeface defaults */
  --primary-typeface: Segoe UI, SegoeUI, Segoe WP, Helvetica Neue, Helvetica,
    Tahoma, Arial, sans-serif;
  --title-font-size: 1.3rem;
  --base-font-size: 20px;
  --base-font-line-height: 28px;
  --small-font-size: 12px;
  --small-font-line-height: 14px;
  /* animations */
  --root-gradient-animation: 4s both root-gradient linear infinite;
  --move-in-offset: 20px;
  --move-in-animation: 1s both move-in;
  --move-in-base-delay: 100ms;
  --logo-tiles-in-animation: 1s both logo-tiles-in;
  --logo-tiles-in-delay: 100ms;
  /* spacing */
  --small-space: 1em;
  --large-space: 2em;
  --text-block-spacing: 0.5em;
}

@keyframes move-in {
  from {
    transform: translateY(var(--move-in-offset));
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes logo-tiles-in {
  0% {
    opacity: 0;
    filter: grayscale(1) hue-rotate(100deg);
  }
  25% {
    opacity: 1;
  }
  50% {
    opacity: 1;
  }
  55% {
    opacity: 0;
  }
  60% {
    opacity: 1;
    filter: grayscale(1) hue-rotate(100deg);
  }
  100% {
    opacity: 1;
    filter: grayscale(0) hue-rotate(0deg);
  }
}

@keyframes logo-tiles-hover {
  from {
    filter: hue-rotate(0deg);
  }
  to {
    filter: hue-rotate(360deg);
  }
}

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

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

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

@keyframes root-gradient {
  0% {
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
  60% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

@keyframes text-gradient-ltr {
  to {
    background-position: -600% center;
  }
}

@keyframes text-gradient-rtl {
  to {
    background-position: 600% center;
  }
}

/* Common */

html {
  position: relative;
  font-size: var(--base-font-size);
  font-family: var(--primary-typeface);
  line-height: var(--base-font-line-height);
  background-color: var(--dark-grey);
}

html[data-loaded] {
  background: linear-gradient(
    to bottom,
    var(--brand-blue) 33%,
    var(--brand-yellow) 67%
  );
}

html:before {
  content: "";
  position: absolute;
  display: block;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  z-index: -1;
  background: unquote(
    "-moz-linear-gradient(center bottom, var(--brand-yellow) 33%, var(--brand-blue) 67%)"
  );
  background: unquote(
    "linear-gradient(center bottom, var(--brand-yellow) 33%, var(--brand-blue) 67%)"
  );
  background: linear-gradient(
    to bottom,
    var(--brand-yellow) 33%,
    var(--brand-blue) 67%
  );
  animation: var(--root-gradient-animation);
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: calc(100vh - 10px);
  margin: 5px;
  padding: 0 var(--small-space);
  color: var(--off-white);
  background-color: var(--dark-grey);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::-moz-selection {
  color: var(--white);
  background-color: var(--brand-blue);
}

::selection {
  color: var(--white);
  background: #05a6f0;
  /* Edge could not work with custom property here */
  background-color: var(--brand-blue);
}

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

a:hover,
a:focus {
  background-image: linear-gradient(
    to right,
    var(--brand-yellow) 25%,
    var(--brand-green) 50%,
    var(--brand-blue) 75%,
    var(--brand-yellow) 100%
  );
  background-size: 600% auto;
  -webkit-text-fill-color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
}

html[dir="ltr"] a:not(.logo-link):hover,
html[dir="ltr"] a:not(.logo-link):focus {
  animation: text-gradient-ltr 6.5s linear infinite;
}

html[dir="rtl"] a:not(.logo-link):hover,
html[dir="rtl"] a:not(.logo-link):focus {
  animation: text-gradient-rtl 6.5s linear infinite;
}

p,
h1 {
  margin: 0;
  padding: var(--text-block-spacing) 0;
}

/* Container */

.container {
  max-width: 31rem;
  margin: 0 auto auto;
}

@media only screen and (max-width: 40em) {
  .container {
    max-width: 80vw;
  }
  .container p {
    font-size: 1.125rem;
  }
}

main p:nth-child(2) {
  animation-delay: calc(var(--move-in-base-delay) * 6);
}

main p:nth-child(3) {
  animation-delay: calc(var(--move-in-base-delay) * 7);
}

main p:nth-child(4) {
  animation-delay: calc(var(--move-in-base-delay) * 8);
}

/* Logo */

.logo-link {
  display: block;
  width: 4rem;
  height: 4rem;
  margin: var(--large-space) auto;
}

.logo-link:hover {
  animation: 1s both logo-tiles-hover linear infinite;
}

.logo {
  display: flex;
  flex-wrap: wrap;
  height: 100%;
  width: 100%;
  margin: 0;
}

.logo-tile {
  display: block;
  width: 45%;
  height: 45%;
  margin: 2.5%;
  outline: 1px solid transparent;
  animation: var(--logo-tiles-in-animation);
}

.logo-tile--red {
  background-color: var(--brand-red);
}

.logo-tile--green {
  background-color: var(--brand-green);
  animation-delay: var(--logo-tiles-in-delay);
}

.logo-tile--blue {
  background-color: var(--brand-blue);
  animation-delay: calc(var(--logo-tiles-in-delay) * 2);
}

.logo-tile--yellow {
  background-color: var(--brand-yellow);
  animation-delay: calc(var(--logo-tiles-in-delay) * 3);
}

.spin {
  -webkit-animation: spin 0.5s linear;
  -moz-animation: spin 0.5s linear;
  animation: spin 0.5s linear;
}

/* Main */

main h1 {
  animation: var(--move-in-animation);
  animation-delay: calc(var(--move-in-base-delay) * 4);
  font-size: var(--title-font-size);
  font-weight: bold;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  margin-bottom: var(--small-space);
  padding-bottom: var(--small-space);
}

main p {
  animation: var(--move-in-animation);
}

main p:nth-of-type(1) {
  animation-delay: calc(var(--move-in-base-delay) * 5);
}

main p:nth-of-type(2) {
  animation-delay: calc(var(--move-in-base-delay) * 6);
}

main p:nth-of-type(3) {
  animation-delay: calc(var(--move-in-base-delay) * 7);
}

main p:nth-of-type(4) {
  animation-delay: calc(var(--move-in-base-delay) * 8);
}

/* Footer */

.footer {
  font-size: var(--small-font-size);
  line-height: var(--small-font-line-height);
  text-align: center;
  margin: var(--small-space) 0 0;
  padding: var(--small-space) 0;
  overflow: hidden;
}

@media only screen and (max-width: 40em) {
  footer {
    font-size: 1rem;
    margin: 0 auto;
    max-width: 80vw;
  }
}

footer p {
  animation: var(--move-in-animation);
  animation-delay: calc(var(--move-in-base-delay) * 11);
}

footer [href*="github"]:hover,
footer [href*="github"]:focus {
  color: var(--brand-green);
}

.footer-piece--separate {
  display: block;
}

@media only screen and (max-width: 40em) {
  .footer-piece {
    display: block;
  }
}

.time-travel {
  text-align: center;
}

.time-travel a {
  cursor: pointer;
}