bootstrap/site/assets/scss/_navbar.scss

.bd-navbar {
  padding: .75rem 0;
  background-color: transparent;
  background-image: linear-gradient(to bottom, rgba(var(--bd-violet-rgb), 1), rgba(var(--bd-violet-rgb), .95));
  box-shadow: 0 .5rem 1rem rgba($black, .15), inset 0 -1px 0 rgba($white, .15);

  [data-theme="dark"] & {
    backdrop-filter: blur(.25rem);
    background-image: linear-gradient(to bottom, rgba(var(--bd-violet-rgb), 1), rgba(var(--bd-violet-rgb), .75));
    box-shadow: 0 .5rem 1rem rgba($black, .15), inset 0 -1px 0 rgba($white, .15);
  }

  .navbar-toggler {
    padding: 0;
    border: 0;

    .bi {
      width: 1.5rem;
      height: 1.5rem;
    }

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

  .navbar-brand {
    transition: .2s ease-in-out transform; // stylelint-disable-line property-disallowed-list

    &:hover {
      transform: rotate(-5deg) scale(1.1);
    }
  }

  .navbar-toggler,
  .nav-link {
    padding-right: $spacer * .25;
    padding-left: $spacer * .25;
    color: rgba($white, .85);

    &:hover,
    &:focus {
      color: $white;
    }

    &.active {
      font-weight: 600;
      color: $white;
    }
  }

  .navbar-nav-svg {
    display: inline-block;
    vertical-align: -.125rem;
  }

  .offcanvas-lg {
    background-color: var(--bd-violet);
    border-left: 0;

    @include media-breakpoint-down(lg) {
      box-shadow: $box-shadow-lg;
    }
  }

  .dropdown-toggle {
    &:focus {
      outline: 0;
    }
  }

  .dropdown-menu {
    --bs-dropdown-min-width: 12rem;
    --bs-dropdown-padding: .25rem;
    --bs-dropdown-link-hover-bg: rgba(var(--bd-violet-rgb), .1);
    --bs-dropdown-link-active-bg: rgba(var(--bd-violet-rgb), 1);
    @include font-size(.875rem);
    @include border-radius(.5rem);
    box-shadow: $dropdown-box-shadow;

    li + li {
      margin-top: .125rem;
    }

    .dropdown-item {
      @include border-radius(.25rem);

      &:active {
        .bi {
          color: inherit !important; // stylelint-disable-line declaration-no-important
        }
      }
    }

    .active {
      font-weight: 600;

      .bi {
        display: block !important; // stylelint-disable-line declaration-no-important
      }
    }
  }
}

.bd-theme-toggle {
  width: 2rem;
  height: 2rem;
  cursor: pointer;
}

.bd-theme-toggle-checkbox {
  position: absolute;
  z-index: -1;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(100%);
  white-space: nowrap;

  ~ .bd-theme-toggle-light { display: none; }
  ~ .bd-theme-toggle-dark { display: block; }

  &:checked {
    ~ .bd-theme-toggle-light { display: block; }
    ~ .bd-theme-toggle-dark { display: none; }
  }
}

.bd-theme-toggle-light {
  color: var(--bs-warning);
}

.bd-theme-toggle-dark {
  color: var(--bs-navbar-brand-color);
}