madiator.com/ui/scss/component/_navigation.scss

.navigation__wrapper {
  width: var(--side-nav-width);
  height: calc(100vh - var(--header-height));
}

.navigation__wrapper--micro {
  width: var(--side-nav-width--micro);

  @media (max-width: $breakpoint-small) {
    width: 0;
  }
}

.navigation__wrapper--absolute {
  &:not(.navigation__wrapper--micro) {
    width: 0;
  }
}

.navigation {
  position: fixed;
  left: 0;
  overflow-y: auto;
  top: var(--header-height);
  width: var(--side-nav-width);
  height: calc(100vh - var(--header-height));
  border-right: 1px solid var(--color-border);
  padding-top: var(--spacing-l);
  padding-bottom: var(--spacing-l);
  overflow-y: auto;
  display: flex;
  flex-direction: column;

  @media (min-width: $breakpoint-small) {
    overflow-y: hidden;
    justify-content: space-between;

    &:hover {
      overflow-y: auto;
    }
  }
}

.navigation--mac {
  top: calc(var(--header-height) + var(--mac-titlebar-height));
}

.navigation--absolute {
  @extend .navigation;
  z-index: 4;
  width: var(--side-nav-width);
  padding-top: 0;
  background-color: var(--color-card-background);
  border-top: 1px solid var(--color-border);
  box-shadow: var(--card-box-shadow);

  .navigation-link {
    padding-left: var(--spacing-m);
  }
}

.navigation--micro {
  @extend .navigation;
  width: var(--side-nav-width--micro);

  @media (max-width: $breakpoint-small) {
    display: none;
  }
}

.navigation__secondary {
  margin-top: var(--spacing-m);

  .button__content {
    align-items: flex-start;
  }
}

.navigation__tertiary {
  margin-top: var(--spacing-m);
}

.navigation-link {
  display: block;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  width: 100%;
  color: var(--color-navigation-link);
  padding-left: var(--spacing-s);
  font-size: var(--font-body);
  font-weight: var(--font-weight-bold);

  .icon {
    height: 1.5rem;
    width: 1.5rem;
    stroke: var(--color-navigation-icon);
  }

  .button__content {
    padding: var(--spacing-s);
    justify-content: flex-start;
    flex-direction: column;
  }

  &:hover:not(.navigation-link--active),
  &:focus {
    @extend .navigation-link--highlighted;
  }

  @media (min-width: $breakpoint-medium) {
    text-align: left;
    margin-bottom: 0;

    .icon {
      height: 1rem;
      width: 1rem;
    }

    .button__content {
      flex-direction: row;
    }

    .button__label {
      margin-top: 0;
    }

    &:focus {
      box-shadow: none;
    }
  }
}

.navigation-link--active {
  background-color: var(--color-navigation-active);
  color: var(--color-navigation-active-text);

  .icon {
    stroke: var(--color-navigation-active-text);
  }
}

.navigation-link--pulse {
  overflow: visible;

  .icon {
    animation: shadow-pulse 2.5s infinite;
  }
}

.navigation-link--highlighted {
  background-color: var(--color-navigation-hover);
  color: var(--color-navigation-hover-text);

  .icon {
    stroke: var(--color-navigation-hover-text);
  }
}

.navigation-links {
  @extend .ul--no-style;
  flex-direction: column;
  align-items: flex-start;
  list-style: none;
}

.navigation-links--micro {
  .icon {
    height: 1.5rem;
    width: 1.5rem;
  }

  .button__content {
    padding: var(--spacing-s);
    justify-content: flex-start;
    flex-direction: column;
    width: var(--side-nav-width--micro);
  }

  .button__label {
    font-size: var(--font-xsmall);
    margin-left: 0;
    margin-top: var(--spacing-xs);
  }

  .navigation-link {
    padding-left: 0;
  }

  @media (max-width: $breakpoint-small) {
    display: none;
  }
}

.navigation-links--absolute {
  @extend .navigation-links;
  margin-top: 0;

  .navigation-link {
    margin-bottom: 0;

    .icon {
      height: 1rem;
      width: 1rem;
    }

    .button__content {
      flex-direction: row;
    }

    .button__label {
      margin-top: 0;
      font-size: var(--font-body);
      font-weight: var(--font-weight-bold);
    }

    &:focus {
      box-shadow: none;
    }
  }
}

.navigation-links--small {
  @extend .navigation-links;
  margin-right: 0;
  padding-right: 0;
  margin-top: var(--spacing-xl);
  margin-bottom: 0;

  .navigation-link {
    font-size: var(--font-small);
  }

  .button__label {
    color: var(--color-text-help);
  }

  .button__content {
    align-items: flex-start;
  }
}

.navigation__overlay {
  position: fixed;
  width: 100vw;
  height: 100vh;
  background-color: var(--color-background-overlay);
  z-index: 3;
  left: 0;
  top: var(--header-height);

  &.navigation__overlay--mac {
    top: calc(var(--header-height) + var(--mac-titlebar-height));
  }
}

.navigation__auth-nudge {
  @extend .card;
  margin: var(--spacing-s);
  margin-top: var(--spacing-l);
  padding: var(--spacing-xs);
  display: flex;
  flex-direction: column;

  .button {
    margin-top: var(--spacing-s);
  }

  .button__content {
    justify-content: center;
  }

  .icon {
    margin-bottom: -2px;
  }
}