:root {
  --color1: #5e42a6;
  --color2: #a425a0;
  --color3: #493382;
  --color-font1: white;
  --color-font2: rgba(255, 255, 255, 0.8);
  --font1: "Nunito", sans-serif;
  --font2: "Noto Sans", sans-serif;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font1);
  font-style: normal;
  font-size: 24px;
  background: url(../assets/temp_background.webp) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  overflow-x: hidden; /* Hide horizontal scrollbar */
}

/* threejs background */
.container {
  position: fixed;
  right: 0;
  transform: scale(1.09);
  z-index: -10;
  opacity: 0; /*set to 1 after sceneLoaded event*/
}

button {
  font-family: var(--font1);
}

/*drop-down controls.css*/
.dropbtn {
  font-family: var(--font2);
}

h1 {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-font1);
  text-shadow: 1px 2px 4px rgba(0, 0, 0, 0.5);
  animation: fade-in 2s ease;
}

h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-font1);
  text-shadow: 1px 2px 4px rgba(0, 0, 0, 0.5);
  animation: fade-in 2s ease;
}

h3 {
  font-size: 24px;
  font-weight: 400;
  color: var(--color-font1);
  text-shadow: 1px 2px 4px rgba(0, 0, 0, 0.5);
  animation: fade-in 2s ease;
}

h4 {
  font-size: 17px;
  color: var(--color-font1);
  text-shadow: 1px 2px 4px rgba(0, 0, 0, 0.5);
  animation: fade-in 2s ease;
}

p {
  font-size: 17px;
  color: var(--color-font2);
}

a {
  font-size: 14px;
  color: var(--color-font2);
}

label {
  font-size: 14px;
  color: var(--color-font2);
}

.heading {
  display: flex;
  justify-content: center;
  text-align: center;
  margin-top: 75px;
}

.heading p {
  color: var(--color-font1);
  font-size: 16px;
  text-shadow: 2px 2px 5px #111111;
  animation: fade-in 2s ease;
}

.heading a {
  color: var(--color-font1);
  font-size: 16px;
  text-shadow: 2px 2px 5px #111111;
  animation: fade-in 2s ease;
}

#page-home {
  min-height: 1600px;
}

#page-home h1 {
  text-shadow: 5px 5px 10px #111111;
}

#page-home h3 {
  text-shadow: 2px 2px 5px #111111;
}

/* https://stackoverflow.com/questions/35681829/transformscale-breaking-my-z-index-order */
#page-features {
  transform: translate3d(0, 0, 0);
  background-color: var(--color1);
  padding: 50px;
  min-height: 500px;
  text-align: center;
  /* overflow-x:hidden; */
}

#page-gallery {
  transform: translate3d(0, 0, 0);
  background-color: var(--color2);
  padding: 50px;
  min-height: 600px;
  text-align: center;
}

#page-download {
  transform: translate3d(0, 0, 0);
  background-color: var(--color1);
  padding: 50px;
  min-height: 300px;
  text-align: center;
}

#footer {
  transform: translate3d(0, 0, 0);
  background-color: var(--color3);
  padding: 25px;
  min-height: 100px;
}

#footer p {
  font-size: 12px;
  color: rgb(150, 150, 150);
}

#footer div {
  text-align: center;
}

#footer-attribution {
  margin-top: 20px;
}

#footer h4 {
  margin: 0px;
}

.avatar {
  width: 125px;
  border-radius: 50%;
  filter: drop-shadow(0px 0px 5px rgba(0, 0, 0, 0.5));
}

/* app ui */
.ui-app {
  font-family: var(--font2);
  animation: zoom-in 1.5s ease;
  position: fixed;
  width: 798px;
  height: 709px;
  top: 50%;
  left: 50%;
  margin-top: 100px;
  margin-left: -399px; /* Negative half of width. */
  user-select: none;
}

#ui-app-titlebar {
  position: absolute;
  display: block;
  z-index: 1;
  left: 0px;
  top: 0px;
}

#ui-app-titlebar-badge {
  position: absolute;
  display: block;
  z-index: 1;
  right: -1.5px;
  top: 12px;
  filter: drop-shadow(-2.5px 0px 2.5px rgba(0, 0, 0, 0.5));
  transition: 0.5s;
}

#ui-app-titlebar-badge:hover {
  filter: drop-shadow(-2.5px 0px 2.5px rgba(0, 0, 0, 0.5)) brightness(1.1);
  transition: 0.5s;
}

#ui-app-titlebar img {
  padding: 15px 0px 0px 30px;
  width: 20px;
}

#ui-app-titlebar a {
  font-size: 12px;
  color: black;
  top: -5px;
  position: relative;
}

#ui-app-library {
  position: absolute;
  z-index: 1;
}

#ui-app-customise {
  position: absolute;
  pointer-events: none;
  opacity: 0;
  z-index: 2;
}

#ui-app-customize-heading {
  position: absolute;
  top: -150px;
  left: 15px;
  opacity: 0;
  pointer-events: none;
  font-family: var(--font1);
}

#ui-app-customise-controls {
  position: absolute;
  left: 300px;
  top: 125px;
}

.ui-app-body {
  margin-left: 15px;
  margin-top: 5px;
  position: relative;
}

.ui-app-body-main {
  width: 770px;
  height: 709px;
  border-radius: 0px 0px 8px 8px;
  -webkit-backdrop-filter: blur(20px) saturate(125%);
  backdrop-filter: blur(20px) saturate(125%);
  background-color: rgba(247, 249, 252, 0.8);
  box-shadow: 5px 10px 10px rgba(0, 0, 0, 0.5);
}

.ui-app-body-top {
  width: 770px;
  height: 80px;
  border-radius: 8px 8px 0px 0px;
  -webkit-backdrop-filter: blur(20px) saturate(125%);
  backdrop-filter: blur(20px) saturate(125%);
  background-color: rgba(238, 244, 249, 0.65);
  box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.5);
}

.ui-app-overlay {
  position: absolute;
  margin-left: 15px;
  margin-top: 5px;
  width: 770px;
  height: 800px;
  border-radius: 8px;
  background-color: rgba(0, 0, 0, 0);
  pointer-events: none;
  z-index: 2;
}

.ui-app-dialog {
  margin-left: 140px;
  margin-top: 80px;
  border-radius: 8px;
  width: 520px;
  height: 675px;
  background-color: rgb(250, 250, 250);
  filter: drop-shadow(0px 0px 5px rgba(0, 0, 0, 0.5));
}

.ui-app-img {
  filter: drop-shadow(5px 0px 10px rgba(0, 0, 0, 0.5));
}

.ui-app-dialog-img {
  filter: drop-shadow(0px 0px 5px rgba(0, 0, 0, 0.5));
}

.wallpapers {
  list-style-type: none;
  animation: zoom-in 1.5s ease;
  position: absolute;
  top: 100px;
  left: 0;
}

li.library {
  font-size: 14px;
  margin: 5px;
  float: left;
  width: 170px;
}

li.library img:hover {
  transform: scale(1.04);
  transition: 0.5s;
  filter: brightness(1.2);
  cursor: pointer;
}

li.library img {
  width: 100%;
  height: auto;
  border-radius: 5px;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.4);
  transition: 0.5s ease;
}

li.library div {
  position: relative;
  color: var(--color-font1);
  padding: 0px;
  text-align: left;
  margin: -25px 0 0 5px;
  text-shadow: 1px 1px 2px rgb(0, 0, 0);
  pointer-events: none;
}

/* features */
.cards {
  list-style-type: none;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}

li.card {
  font-size: 14px;
  margin: 10px;
  position: relative;
  left: -22px; /*I don't know why this is needed*/
  float: left;
  width: 368px;
  height: 207px;
  border-radius: 10px;
  background-color: var(--color2);
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.4);
  transition: 0.5s ease;
}

li.card:hover {
  transform: scale(1.05);
  transition: 0.5s ease;
  filter: brightness(1.1);
}

li.card img {
  position: relative;
  width: 20%;
  padding: 10px;
  margin: 0% 35% 0% 35%;
}

li.card div {
  position: relative;
  color: var(--color-font1);
  padding: 0px;
  text-align: left;
  text-align: center;
}

li.card p {
  text-align: center;
  font-size: 14px;
  padding: 0px 5px;
}

/* gallery */
/* credit: https://codepen.io/stefcharle/pen/Gydvbx */
.gallery-container {
  padding: 0px;
  margin: 50px 50px 0px 50px;
  filter: drop-shadow(1px 1px 2px rgba(0, 0, 0, 0.5));
}

.gallery-wrap {
  display: flex;
  flex-direction: row;
  width: 100%;
  height: 70vh;
}

.item {
  flex: 1;
  height: 100%;
  background-position: center;
  background-size: cover;
  background-repeat: none;
  transition: flex 0.8s ease;
  transition-delay: 0.25s;
}

.item:hover {
  flex: 14;
}

.item:hover p {
  display: block;
  animation: fade-in 2.5s ease;
}

.item p {
  position: absolute;
  top: 0;
  margin: 25px;
  padding: 15px;
  display: none;
  color: var(--color-font1);
  filter: drop-shadow(1px 1px 2px rgba(0, 0, 0, 0.5));
  min-width: 250px;
  text-align: left;
}

.item-1 {
  border-radius: 5px 0px 0px 5px;
  /* background-image: url(../assets/promo/gallery1.webp); */
}

.item-2 {
  /* background-image: url(../assets/promo/gallery2.webp); */
}

.item-3 {
  /* background-image: url(../assets/promo/gallery3.webp); */
}

.item-4 {
  /* background-image: url(../assets/promo/gallery4.webp); */
}

.item-5 {
  border-radius: 0px 5px 5px 0px;
  /* background-image: url(../assets/promo/gallery5.webp); */
}

.white-filter {
  filter: invert(100%) sepia(31%) saturate(0%) hue-rotate(148deg)
    brightness(110%) contrast(101%);
}

.logo {
  /* -webkit-animation: spin 14s linear infinite;
  -moz-animation: spin 14s linear infinite;
  animation: spin 14s linear infinite; */
  margin-bottom: -25px;
  filter: drop-shadow(10px 5px 7.5px rgba(0, 0, 0, 0.5));
  animation: fade-in 2s ease;
}

.download-options {
  display: block;
}

.download-button {
  margin-top: 10px;
  background-color: #202020;
  border-radius: 15px;
  width: 350px;
  height: 96px;
  transition: 0.25s;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0px 0px 0px 3px rgba(0, 0, 0, 0.1);
  font-family: var(--font2);
}

.download-wrapper {
  display: flex;
  justify-content: flex-start;
  align-items: flex-end;
  position: relative;
  bottom: 25px;
  height: 100%;
}

.download-wrapper > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  margin-left: 14px;
  font-family: system-ui, auto;
}

.download-wrapper span {
  font-size: 18px;
}

.download-button-wrapper {
  display: flex;
  justify-content: center;
}

.download-button:hover {
  cursor: pointer;
  transform: translateY(-5px);
  transition: 0.25s;
}

.download-button a {
  text-decoration: none;
}

.download-button h1 {
  display: inline-block;
  font-size: 32px !important;
  vertical-align: top;
  margin: 0;
  line-height: 27px;
  font-weight: 600;
  text-shadow: none;
}

.download-button img {
  position: relative;
  width: 50px;
  margin-left: 20px;
}

/* navigation */
.nav img {
  width: 25px;
  height: auto;
  position: absolute;
}
.nav div {
  display: flex;
  align-items: center;
  position: relative;
}
.nav {
  display: flex;
  justify-content: space-between;
  padding: 0rem 5rem;
  position: absolute;
  left: 0;
  right: 0;
  height: 5rem;
  top: 0;
}

.nav h4 {
  font-size: 1.2rem;
  position: relative;
  left: 30px;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  animation: none !important;
}

.nav ul {
  list-style: none;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: space-around;
  align-items: center;
  text-transform: uppercase;
}

.nav a {
  cursor: pointer;
  font-size: 1.2rem;
  margin: 0.2rem 0.5rem;
  position: relative;
  color: var(--color-font1);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.nav a::before {
  content: " ";
  position: absolute;
  width: 0%;
  height: 100%;

  transition: width 0.5s;
  right: 0;
  bottom: 0;
  z-index: 1;
}

.section a::before {
  border-radius: 2rem;
  left: 0;
}

.nav li {
  padding-left: 5px;
}

.nav li a {
  position: relative;
  text-decoration: none;
  transition: opacity 0.5s;
}

.nav li a:not(.active) {
  opacity: 0.5;
}

.nav li a:hover:not(.active) {
  opacity: 1;
}

/*loading progressbar*/
.indeterminate-progress-bar {
  box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
  background-color: #d1d5db;
  height: 5px;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 100;
  animation: fade-in 1s ease;
}

.indeterminate-progress-bar__progress {
  background-color: var(--color1);
  position: absolute;
  bottom: 0;
  top: 0;
  width: 50%;
  animation-duration: 2s;
  animation-iteration-count: infinite;
  animation-name: indeterminate-progress-bar;
}

/*animated down arrow*/
/*ref: https://unused-css.com/blog/animated-down-arrow */
.down-arrow {
  position: fixed;
  color: var(--color-font1);
  opacity: 0.4;
  bottom: 0;
  margin-left: 405px;
  left: 50%;
  width: 0;
  z-index: 1;
  height: 30px;
  border: 2px solid;
  border-radius: 2px;
  cursor: pointer;
  animation: jumpInfinite 3s infinite;
}

.down-arrow:after {
  content: " ";
  position: absolute;
  top: 12px;
  left: -10px;
  width: 16px;
  height: 16px;
  border-bottom: 4px solid;
  border-right: 4px solid;
  border-radius: 4px;
  transform: rotateZ(45deg);
}

.fade-in-start-1s {
  animation: fade-in 1s ease;
}

.fade-in-start-1-5s {
  animation: fade-in 1.5s ease;
}

.fade-in-start-2s {
  animation: fade-in 2s ease;
}

@keyframes jumpInfinite {
  0% {
    margin-bottom: 5px;
  }
  50% {
    margin-bottom: 20px;
  }
  100% {
    margin-bottom: 5px;
  }
}

@keyframes indeterminate-progress-bar {
  from {
    left: -50%;
  }
  to {
    left: 100%;
  }
}

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

@keyframes fade-in {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes zoom-in {
  0% {
    transform: scale(0.75, 0.75);
  }
  100% {
    transform: scale(1, 1);
  }
}

/*min desktop size*/
@media screen and (max-height: 830px) {
  /*customise ui*/
  #ui-app-customise-controls {
    top: 90px;
  }

  #ui-app-customize-heading {
    top: -125px;
  }

  #ui-app-customize-heading h1 {
    font-size: 30px;
  }

  #ui-app-customize-heading h3 {
    font-size: 18px;
  }

  /*home font*/
  .heading {
    padding: 10px;
  }

  .heading h1 {
    font-size: 30px;
  }

  .heading h3 {
    font-size: 18px;
  }

  .heading p {
    font-size: 14px;
  }

  /*logo*/
  .logo {
    scale: 0.75;
    margin-bottom: -35px;
  }

  /*dropdown open up*/
  .dropdown-content {
    bottom: 100%;
  }
}

/*portrait mode*/
@media screen and (max-width: 768px) {
  /*hide ui, background customise*/
  .ui-app {
    display: none !important;
  }

  #page-home {
    min-height: 700px;
  }

  /*hide navbar for now*/
  .nav {
    display: none !important;
  }

  /*vertical feature list*/
  .cards {
    flex-direction: column;
  }

  li.card {
    width: 90%;
  }

  /*expand more and closer to edge*/
  #page-gallery {
    padding: 5px;
  }

  .gallery-container {
    margin: 0px;
  }

  /* .item:hover {
    flex: 14;
  } */

  /*home font*/
  .heading {
    padding: 10px;
  }

  .heading h1 {
    font-size: 30px;
  }

  .heading h3 {
    font-size: 18px;
  }

  .heading p {
    font-size: 14px;
  }
}