.sub-nav {
  ul {
    list-style: none;
    padding: 0;
    margin: 0 0 0.5em;
    justify-content: center;
    display: flex;
  }

  :is(a, span) {
    flex: 1;
    color: var(--color-main-link-text);
    display: block;
    text-align: center;
    text-transform: uppercase;
    text-decoration: none;
    font-size: 0.875em;
    font-weight: 700;
    line-height: 1;
    padding: 0.75em 0.5em;
    border-radius: 0.5em;
  }

  a {
    &:hover {
      background: var(--color-main-link-focus-bg);
      color: var(--color-main-link-focus-text);
    }

    &.active {
      background: var(--color-main-link-active-bg);
      color: var(--color-main-link-active-text);
    }
  }

  .disabled {
    color: var(--color-border-strong);
    cursor: default;
  }
}

@media screen and (max-width: 27.5em) {
  .sub-nav {
    position: fixed;
    bottom: 4.5em;
    width: 100%;
    margin: 0;
    background-color: var(--color-bg);
    z-index: 100;

    ul {
      margin: 0;
      gap: 0;
      display: flex;
    }

    li {
      flex: 1;
    }

    :is(a, span) {
      padding: 0.75rem 0;
      border-radius: 0;
    }
  }
}

@media screen and (min-width: 32em) {
  .sub-nav {
    ul {
      gap: 0.25em;
    }
  }
}

@media screen and (min-width: 40em) {
  .sub-nav {
    :is(a, span) {
      padding: 0.75em 1em;
    }
  }
}