@view-transition {
  navigation: auto;
  types: slide;
}

:root {
  box-sizing: border-box;
  height: 100%;
}

#placeholder {
  display: none;
  background-color: transparent;
  border: none;
  box-shadow: none;
}

.visibility-toggler {
  border: none;
  background-color: transparent;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  .bars {
    display: inline-block;
    position: relative;
    width: 100%;
    height: 0.125rem;
    background-color: var(--primary-contrast);
    transition: background-color 0.25s;

    &::before,
    &::after {
      background-color: var(--primary-contrast);
      content: '';
      display: block;
      height: 100%;
      position: absolute;
      width: 100%;
      transition: all 0.5s ease;
    }

    &::before {
      top: 0.5rem;
    }

    &::after {
      top: -0.5rem;
    }
  }

  .open + &,
  .open > & {
    & .bars::before {
      transform: rotate(-45deg);
      top: 0;
    }

    & .bars {
      background-color: transparent;
    }

    & .bars::after {
      transform: rotate(45deg);
      top: 0;
    }
  }
}

button:has(> .arrow) {
  background-color: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.arrow {
  display: inline-block;
  position: relative;
  width: 0.8rem;
  height: 0.125rem;
  background-color: transparent;
  transition: background-color 0.25s;
  z-index: 0;

  &::before,
  &::after {
    background-color: var(--primary-contrast);
    content: '';
    display: block;
    height: 100%;
    width: 100%;
    position: absolute;
  }

  &::before {
    top: 0.25rem;
    transform: rotate(-45deg);
  }

  &::after {
    top: -0.25rem;
    transform: rotate(45deg);
  }
}

.reverse {
  transform: scaleX(-1);
}

body {
  --navigation-height: 10%;
  display: grid;
  grid-template-rows: var(--navigation-height) 90%;
  height: 100%;
  overflow: auto;
  margin: 0;
}

.container {
  display: grid;
  padding: 1rem 0;
  background-color: Canvas;
  gap: 0.25rem;
  grid-auto-rows: min-content;
  overflow-y: auto;
}

.card {
  padding: 0.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  row-gap: 0.5rem;
  justify-content: space-between;
  background-color: Canvas;
  box-shadow: 0 0.125rem 0.1rem var(--tertiary-color);
  border-bottom: 1px solid var(--tertiary-color);
  user-select: none;
  height: auto;
  transition: 0.25s ease;
  overflow: hidden;
  grid-template-rows: auto 0fr;

  &.open {
    grid-template-rows: auto 1fr;
  }

  &:not(.open):hover {
    background-color: var(--primary-color-shade);
  }

  .subheading {
    text-align: right;
  }

  .visibility-toggler {
    display: none;
  }
}

.card-text {
  transition: inherit;
  overflow: hidden;
  max-height: 0;
  grid-column: 1/-1;
  margin: 0;

  .open > & {
    max-height: 100%;
  }
}

a {
  color: var(--primary-contrast);
  text-decoration: none;
  &:hover {
    text-decoration: underline;
    color: var(--primary-contrast);
  }

  &[aria-current='page'] {
    position: relative;

    &::after {
      --height: 40%;
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      height: var(--height);
      width: 100%;
      background-color: var(--highlight-color);
      opacity: 50%;
    }
  }
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
}

@media only screen and (min-width: 729px) {
  .container {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: max-content;
    padding: 1rem;
    gap: 0.5rem;
    position: relative;

    &:has(> .open) {
      &::before {
        z-index: 0;
        top: 0;
        left: 0;
        content: '';
        position: absolute;
        height: 100%;
        width: 100%;
        backdrop-filter: blur(2px);
      }
    }
  }

  .sub-nav-title {
    display: none !important;
  }

  .card {
    border-radius: 0.5rem;
    border: 1px solid var(--tertiary-color);
    box-shadow: 0.125rem 0.125rem 0.1rem var(--tertiary-color);
    grid-template-columns: 1fr;
    transition: none;

    &.open {
      user-select: initial;
      z-index: 1;
      --size-x: 75%;
      --size-y: 75%;
      position: fixed;
      grid-template-rows: min-content min-content auto;
      grid-template-columns: 1fr auto;
      height: var(--size-y);
      width: var(--size-x);
      left: calc((100% - var(--size-x)) / 2);
      top: calc((100% - var(--size-y)) / 2);

      h3 {
        grid-column: 1;
        grid-row: 1;
      }

      .visibility-toggler {
        display: block;
        width: 2rem;
        height: 2rem;
        grid-column: -2/-1;
      }

      > p {
        grid-column: 1/-1;
      }
    }

    .subheading {
      text-align: initial;
    }
  }

  .open + #placeholder {
    display: block;
  }
}