tghandbook/style/ui.scss

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
}

.bgimage {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 0;
  img {
    opacity: 0.4;
    width: 80vmin;
  }
}

body {
  background: linear-gradient(
    to bottom,
    darken($nanotrasen, 20%),
    darken($nanotrasen, 10%)
  );
  background-size: 100% 100%;
  background-attachment: fixed;
  color: #fff;
  font-family: "Iosevka Aile Web", sans-serif;
  font-size: 9pt;
  line-height: 1.6em;
}

#app {
  height: 100%;
  display: flex;
  flex-direction: column;

  &.waiting {
    #tab-list,
    #section-list {
      display: none;
    }
  }
}

::-webkit-scrollbar {
  width: 14pt;
}

::-webkit-scrollbar-track {
  background: linear-gradient(
    to bottom,
    darken($nanotrasen, 0%),
    darken($nanotrasen, 10%),
    darken($nanotrasen, 0%)
  );
  border: 1px solid lighten($nanotrasen, 10%);
}

::-webkit-scrollbar-thumb {
  border-radius: 2px;
  background: linear-gradient(
    to bottom,
    lighten($nanotrasen, 20%),
    lighten($nanotrasen, 30%),
    lighten($nanotrasen, 20%)
  );
  border: 1px solid lighten($nanotrasen, 10%);
}

.speen {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 12pt;
  img {
    width: 60vmin;
    max-height: 100%;
    opacity: 0.9;
    padding-bottom: 1em;
  }
}

#tabs {
  flex: 1;
  z-index: 1;
  display: grid;
  overflow: hidden;
  .page {
    //visibility: hidden;
    will-change: display;
    &:not(.active) {
      display: none;
    }
    overflow: auto;
    grid-row: 1;
    grid-column: 1;
    &.active {
      //visibility: visible;
      &.waiting {
        user-select: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        height: 100%;
      }
    }
  }
}

$section-active: darken($nanotrasen, 5%);
$tab-active: lighten($nanotrasen, 10%);

#section-list {
  z-index: 2;
  border-bottom: 2px solid $section-active;
  display: flex;
  .section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    user-select: none;
    font-size: 9pt;
    padding: 3pt 7pt;
    text-transform: uppercase;
    color: lighten($nanotrasen, 60%);
    flex: 1;
    &.active {
      background-color: $section-active;
      color: white;
    }
    &:not(.active) {
      cursor: pointer;
      &:hover {
        background-color: darken($section-active, 10%);
      }
    }
  }
}

#tab-list {
  z-index: 2;
  display: flex;
  background-color: $section-active;
  border-bottom: 4px solid $tab-active;

  .tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    user-select: none;
    font-size: 7pt;
    padding: 2px 4px;
    padding-bottom: 0;
    text-transform: uppercase;
    flex: 1;
    max-width: 100px;

    img {
      height: 80%;
      max-height: 24px;
      margin: 0;
    }
    &.active {
      background-color: $tab-active;
    }
    &:not(.active) {
      cursor: pointer;
      &:hover {
        background-color: darken($tab-active, 8%);
      }
    }

    &.hidden {
      display: none;
    }
  }
}

noscript {
  position: fixed;
  top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: transparent;
  width: 100%;
}

.loading-icons {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  user-select: none;
  font-size: 9pt;
  padding: 3pt 7pt;
  text-transform: uppercase;
  flex-wrap: wrap;
  div {
    border: 1px solid red;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  img {
    max-width: 32px;
  }
}