$navHeight: 4.5rem;
$menuBreakPoint: 750px;

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

  &__logo {
    font-weight: 700;
    font-size: 1.4rem;
  }

  &__link-group {
    margin-bottom: 2rem;
  }

  &__link-group-title {
    font-weight: 700;
    letter-spacing: 0.025rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: rgba($colorBlack, 0.3);
    margin-bottom: 0.5rem;
  }

  &__link-list &__link-list {
    display: none;
    padding-left: 1rem;
    margin-top: 0.5rem;
    margin-bottom: 1.5rem;
    border-left: 2px solid rgba($colorBlack, 0.1);
  }

  .active + &__link-list {
    display: block;
  }

  &__link {
    display: block;
    padding: 0.1rem 0.5rem;
    border-radius: 5px;
    font-weight: 500;
    color: rgba($colorBlack, 0.6);
    margin-bottom: 0.2rem;
    margin-left: -0.5rem;

    &:hover {
      color: $colorBlack;
    }

    &.active {
      color: $colorBlack;
      background-color: rgba($colorBlack, 0.05);
    }

    &--draft {
      color: rgba($colorBlack, 0.2);
    }

    &--with-children::after {
        content: '→';
        color: rgba($colorBlack, 0.2);
    }
  }

  &__header {
    align-self: center;
    position: fixed;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: $navHeight;
    flex: 0 0 auto;
    background-color: rgba($colorBackground, 0.8);
    border-bottom: 1px solid rgba($colorBlack, 0.05);
    backdrop-filter: blur(10px);
  }

  &__header-inner {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 62rem;
    margin: 0 auto;
    padding: 0 1rem;

    @media (min-width: $menuBreakPoint) {
      padding: 0 2rem;
    }
  }

  &__content {
    position: relative;
    z-index: 1;
    flex: 1 1 auto;
    display: flex;
    width: 100%;
    max-width: 62rem;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;

    @media (min-width: $menuBreakPoint) {
      padding-left: 2rem;
      padding-right: 2rem;
    }
  }

  &__menu-icon,
  &__close-icon {
    border: none;
    padding: 0;
    background-color: transparent;
    margin-left: 1rem;

    @media (min-width: $menuBreakPoint) {
      display: none;
    }
  }

  &__sidebar-wrapper {
    position: fixed;
    z-index: 2;
    top: $navHeight;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: $colorBackground;
    padding-left: 1rem;
    padding-right: 1rem;
    visibility: hidden;
    opacity: 0;

    &.is-mobile-visible {
      visibility: visible;
      opacity: 1;
    }

    @media (min-width: $menuBreakPoint) {
      visibility: visible;
      opacity: 1;
      position: sticky;
      flex: 0 0 auto;
      align-self: flex-start;
      top: 0;
      width: 18rem;
      height: 100vh;
      padding-left: 0;
      padding-right: 0;
      padding-right: 3rem;
      padding-top: $navHeight;
    }
  }

  &__sidebar {
    overflow: auto;
    height: 100%;
    padding-top: 2rem;
    padding-left: 0.5rem;
    margin-left: -0.5rem;
  }

  &__main {
    flex: 1 1 auto;
    min-width: 0;
    padding-top: $navHeight + 2rem;
  }
}