htwkalender-pwa/frontend/public/primevue-sass-theme/theme-base/components/menu/_megamenu.scss

// core
.p-megamenu {
  display: flex;
  position: relative;
}

.p-megamenu-root-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.p-megamenu .p-menuitem-link {
  cursor: pointer;
  display: flex;
  align-items: center;
  text-decoration: none;
  overflow: hidden;
  position: relative;
}

.p-megamenu .p-menuitem-text {
  line-height: 1;
}

.p-megamenu-panel {
  display: none;
  width: auto;
  z-index: 1;
  left: 0;
  min-width: 100%;
}

.p-megamenu-panel:not(.p-megamenu-mobile) {
  position: absolute;
}

.p-megamenu-root-list > .p-menuitem-active > .p-megamenu-panel {
  display: block;
}

.p-megamenu-submenu {
  margin: 0;
  padding: 0;
  list-style: none;
}

.p-megamenu-button {
  display: none;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

/* Horizontal */
.p-megamenu-horizontal {
  align-items: center;
}

.p-megamenu-horizontal .p-megamenu-root-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.p-megamenu-horizontal .p-megamenu-end {
  margin-left: auto;
  align-self: center;
}

/* Vertical */
.p-megamenu-vertical {
  flex-direction: column;
}

.p-megamenu-vertical:not(.p-megamenu-mobile) {
  display: inline-flex;
}

.p-megamenu-vertical .p-megamenu-root-list {
  flex-direction: column;
}

.p-megamenu-vertical:not(.p-megamenu-mobile)
  .p-megamenu-root-list
  > .p-menuitem-active
  > .p-megamenu-panel {
  left: 100%;
  top: 0;
}

.p-megamenu-vertical
  .p-megamenu-root-list
  > .p-menuitem
  > .p-menuitem-content
  > .p-menuitem-link
  > .p-submenu-icon {
  margin-left: auto;
}

.p-megamenu-grid {
  display: flex;
}

.p-megamenu-col-2,
.p-megamenu-col-3,
.p-megamenu-col-4,
.p-megamenu-col-6,
.p-megamenu-col-12 {
  flex: 0 0 auto;
  padding: 0.5rem;
}

.p-megamenu-col-2 {
  width: 16.6667%;
}

.p-megamenu-col-3 {
  width: 25%;
}

.p-megamenu-col-4 {
  width: 33.3333%;
}

.p-megamenu-col-6 {
  width: 50%;
}

.p-megamenu-col-12 {
  width: 100%;
}

.p-megamenu.p-megamenu-mobile .p-megamenu-button {
  display: flex;
}

.p-megamenu.p-megamenu-mobile .p-megamenu-root-list {
  position: absolute;
  display: none;
  width: 100%;
}

.p-megamenu.p-megamenu-mobile .p-submenu-list {
  width: 100%;
  position: static;
  box-shadow: none;
  border: 0 none;
}

.p-megamenu.p-megamenu-mobile .p-megamenu-root-list .p-menuitem {
  width: 100%;
  position: static;
}

.p-megamenu.p-megamenu-mobile-active .p-megamenu-root-list {
  display: flex;
  flex-direction: column;
  top: 100%;
  left: 0;
  z-index: 1;
}

.p-megamenu.p-megamenu-mobile .p-megamenu-grid {
  flex-wrap: wrap;
  overflow: auto;
  max-height: 90%;
}

// theme
.p-megamenu {
  padding: $horizontalMenuPadding;
  background: $horizontalMenuBg;
  color: $horizontalMenuTextColor;
  border: $horizontalMenuBorder;
  border-radius: $borderRadius;

  .p-megamenu-root-list {
    outline: 0 none;
  }

  .p-menuitem {
    @include menuitem();
  }

  .p-megamenu-panel {
    background: $overlayMenuBg;
    color: $menuTextColor;
    border: $overlayMenuBorder;
    box-shadow: $overlayMenuShadow;
    border-radius: $borderRadius;
  }

  .p-submenu-header {
    margin: $submenuHeaderMargin;
    padding: $submenuHeaderPadding;
    color: $submenuHeaderTextColor;
    background: $submenuHeaderBg;
    font-weight: $submenuHeaderFontWeight;
    border-top-right-radius: $borderRadius;
    border-top-left-radius: $borderRadius;
  }

  .p-submenu-list {
    padding: $verticalMenuPadding;
    min-width: $menuWidth;

    .p-menuitem-separator {
      border-top: $divider;
      margin: $menuSeparatorMargin;
    }
  }

  &.p-megamenu-vertical {
    min-width: $menuWidth;
    padding: $verticalMenuPadding;
  }

  &.p-megamenu-horizontal {
    .p-megamenu-root-list {
      > .p-menuitem {
        @include horizontal-rootmenuitem();
      }
    }
  }

  &.p-megamenu-mobile {
    &.p-megamenu-vertical {
      width: 100%;
      padding: $horizontalMenuPadding;
    }

    .p-megamenu-button {
      width: $actionIconWidth;
      height: $actionIconHeight;
      color: $horizontalMenuRootMenuitemIconColor;
      border-radius: $actionIconBorderRadius;
      transition: $actionIconTransition;
      outline-color: transparent;

      &:hover {
        color: $horizontalMenuRootMenuitemIconHoverColor;
        background: $horizontalMenuRootMenuitemHoverBg;
      }

      &:focus {
        @include focused();
      }
    }

    .p-megamenu-root-list {
      padding: $verticalMenuPadding;
      background: $overlayMenuBg;
      border: $overlayMenuBorder;
      box-shadow: $overlayMenuShadow;

      .p-menuitem-separator {
        border-top: $divider;
        margin: $menuSeparatorMargin;
      }

      .p-submenu-icon {
        font-size: $menuitemSubmenuIconFontSize;
      }

      .p-menuitem {
        .p-menuitem-content {
          .p-menuitem-link {
            .p-submenu-icon {
              margin-left: auto;
              transition: transform $transitionDuration;
            }
          }
        }

        &.p-menuitem-active {
          > .p-menuitem-content {
            > .p-menuitem-link {
              > .p-submenu-icon {
                transform: rotate(-180deg);
              }
            }
          }
        }
      }

      .p-submenu-list {
        .p-submenu-icon {
          transition: transform $transitionDuration;
          transform: rotate(90deg);
        }

        .p-menuitem-active {
          > .p-menuitem-content {
            > .p-menuitem-link {
              > .p-submenu-icon {
                transform: rotate(-90deg);
              }
            }
          }
        }
      }

      @include nested-submenu-indents(nth($menuitemPadding, 1), 2, 2);
    }
  }
}