.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: url(../images/bg-menu-header.webp) top center no-repeat;
  background-size: cover;
}
.en .top-nav {
  gap: 36.5rem;
}
.top-nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 20rem;
  width: 100%;
  height: 90rem;
  /* background: url(../images/bg-menu-header.png) top center no-repeat; */
  background-size: cover;
  border-bottom: 1rem solid rgba(255, 255, 255, 0.08);
  max-width: 1440rem;
  margin-inline: auto;
}

.logo {
  position: absolute;
  left: 72rem;
  top: 25rem;
  z-index: 999;
}

.logo img {
  display: block;
  aspect-ratio: 108/79;
  width: 108rem;
}
.en .menu {
  gap: 35rem;
  margin-left: 228rem;
}
.menu {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 20rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  margin-left: 207rem;
  height: 90rem;
}

/* Scope to anchors only — WP also puts .menu-item on footer <li> */
.menu > li > a.menu-item {
  position: relative;
  display: inline-block;
  color: #fff;
  text-decoration: none;
  font-size: 16rem;
  line-height: 20rem;
  font-weight: 500;
  text-transform: uppercase;
  transition: color 0.25s ease;
  padding-block: 43rem 27rem;
}

.menu > li > a.menu-item:hover,
.menu-group:hover > a.menu-item,
.menu > li > a.menu-item.active,
.menu-submenu li a:hover,
.menu-submenu li a.active {
  background: linear-gradient(90deg, #ff0000 0%, #ff9d33 100%);
  background-clip: text;
  color: transparent;
}

.menu > li > a.menu-item.active::after,
.menu-submenu li a:hover::after,
.menu-submenu li a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  bottom: 0;
  width: 48rem;
  height: 3rem;
  background: #ff0000;
}

/* =========================================
  Desktop Menu Dropdown Submenu
========================================= */
.menu-dropdown {
  align-items: center;
  gap: 6rem;
}

.menu-dropdown:hover,
.menu-group:hover .menu-dropdown {
  background: linear-gradient(90deg, #ff0000 0%, #ff9d33 100%);
  background-clip: text;
  color: transparent;
}

.menu-dropdown:hover::after {
  border-top-color: #ff0000;
}

.menu-group {
  position: relative;
}

.menu-group:hover .menu-dropdown::after {
  border-top-color: #ff0000;
}

.menu-submenu {
  position: absolute;
  top: 99%;
  left: -530%;
  list-style: none;
  transform: translateX(0) translateY(0) !important;
  margin: 0;
  padding: 0;
  min-width: 220rem;
  background: #18144599;
  backdrop-filter: blur(18px);
  box-shadow: 0 20rem 40rem rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease,
    visibility 0.25s;
  z-index: 100;
  overflow: hidden;
  display: flex;
  width: 1440rem;
  height: 60rem;
  justify-content: center;
  align-items: center;
  gap: 32rem;
}
.en .menu-submenu {
  left: -744%;
}
.menu-group:hover .menu-submenu,
.menu-group.active .menu-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.menu-submenu li a {
  display: block;
  padding: 12rem 20rem;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 14rem;
  font-weight: 500;
  transition:
    background 0.2s ease,
    color 0.2s ease;
  position: relative;
}

.menu-submenu li:last-child a {
  border-bottom: none;
}
.menu-submenu li a:hover {
  position: relative;
}

/* new css for langquage */
.header-language-dropdown {
  position: relative;
  display: inline-block;
  padding-top: 35rem;
  height: 100%;
}

.header-language-dropdown .lang-toggle {
  display: flex;
  align-items: center;
  gap: 8rem;
  text-decoration: none;
  color: #d1c2e0;
  cursor: pointer;
}

.header-language-dropdown > a {
  min-width: 101rem;
  min-height: 36rem;
  background: #ffffff0f;
  color: white;
  justify-content: center;
  border-radius: 50rem;
  font-size: 16rem;
  line-height: 20rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10rem;
  transition: all 0.2s ease-in-out;
  text-decoration: none;
  position: relative;
  backdrop-filter: blur(9rem);
}

.header-language-dropdown > a::after {
  content: "";
  position: absolute;
  inset: 0;
  /* border thickness */
  padding: 1rem;
  border-radius: inherit;
  background: linear-gradient(360deg, rgba(0, 0, 0, 0) 0%, #3951b7 100%);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.header-language-dropdown > a:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.35);
}

.header-language-dropdown > a .dropdown-icon {
  height: 7rem;
  display: flex;
  width: 14rem;
  margin-top: 3rem;
}
.header-language-dropdown > a > img {
  width: 100%;
  height: 100%;
}

.header-language-dropdown .arrow {
  font-size: 11rem;
  transition: transform 0.2s ease;
}

.header-language-dropdown.open .arrow {
  transform: rotate(180deg);
}
.nav-dropdown {
  background: #ffffff0f;
  text-align: center;
  position: absolute;
  top: 95%;
  right: 0;

  backdrop-filter: blur(9px);
  border: 1rem solid #3951b7;
  border-radius: 8rem;
  list-style: none;
  width: 160rem;
  padding: 0;
  margin: 0;
  box-shadow: 0 6rem 20rem rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  left: 50%;
  transform: translate(-50%, -10rem);

  transition:
    opacity 0.2s ease,
    transform 0.2s ease,
    visibility 0.2s;
  z-index: 600;
}

.nav-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav-dropdown li {
  list-style: none;
}

.nav-dropdown li:first-child a {
  padding-block: 25rem 20rem;
}

.nav-dropdown li:last-child a {
  padding-block: 20rem 25rem;
}

.nav-dropdown li a {
  display: block;
  color: #d1c2e0;
  font-size: 17rem;
  line-height: calc(20 / 17);
  text-decoration: none;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.nav-dropdown li a:hover {
  color: #ff5555;
}

.nav-dropdown li + li {
  border-top: 1rem solid #ffffff0d;
  margin-inline: 15rem;
}

/* =========================================
  Mobile Viewport Drawer Container & Effects
========================================= */
.mobile-menu-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100dvh;
  background: url("../images/drawer-menu-bg.webp") fixed top center
    no-repeat;
  background-size: cover;
  background-color: #080105;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition:
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    opacity 0.3s ease,
    visibility 0.3s;
  overflow-y: auto;
}

.mobile-menu-drawer.drawer-active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.drawer-logo-container {
  text-align: center;
}

.drawer-logo {
  width: 130rem;
  aspect-ratio: 130/89;
}

.drawer-header {
  display: flex;
  justify-content: flex-start;
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 10;
  padding-top: 54rem;
  padding-left: 12rem;
}

.drawer-close-btn {
  background: none;
  border: none;
  color: #f1f1f1;
  cursor: pointer;
  width: 32rem;
  height: 32rem;
}

.drawer-divider {
  width: 148rem;
  margin-block: 13rem 32rem;
  height: 1rem;
  margin-inline: auto;
  background: linear-gradient(90deg, #ffc53c -1.12%, #e8384a 100.84%);
  box-shadow: 0rem 0rem 7rem 0rem #ff5a99cf;
}

.drawer-content {
  width: 402rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: #fff;
}

.drawer-scroll {
  flex: 1;
  overflow-y: auto;
}

.drawer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: baseline;
  margin: 0 auto;
  padding: 54rem;
  width: 100%;
}

.drawer-item {
  display: flex;
  align-items: center;
  text-decoration: none;
  justify-content: flex-start;
  color: white;
  font-size: 16rem;
  font-weight: 400;
  padding: 18rem 0;
  border-bottom: 1rem solid rgba(255, 255, 255, 0.03);
  transition: color 0.3s ease;
  gap: 32rem;
}
.drawer-item.drawer-toggle {
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.drawer-item.drawer-toggle div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32rem;
}
.drawer-list li {
  width: 100%;
}
.drawer-list li:first-of-type .drawer-item {
  padding-top: 0;
}

.drawer-item .drawer-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  width: 26rem;
  height: 26rem;
  flex-shrink: 0;
}

.drawer-item .drawer-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.drawer-list > li {
  border-bottom: 1rem solid rgba(255, 255, 255, 0.06);
}

.drawer-item.active .drawer-text {
  color: #ffd43b;
}

.drawer-item:hover {
  color: #ffffff;
}

.drawer-group.active > .drawer-item {
  color: #ffffff;
}

.drawer-arrow {
  transform: rotate(0deg);
  transition: transform 0.25s ease;
}

.drawer-group.active .drawer-arrow {
  transform: rotate(180deg);
}
.drawer-arrow img {
  width: 24rem;
  height: 24rem;
  font-size: 24rem;
}
.drawer-group .drawer-submenu {
  display: block;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  margin-left: 13rem;
  transition:
    max-height 0.3s ease-out,
    opacity 0.25s ease-out;
}
.drawer-group.active .drawer-submenu {
  max-height: 500px;
  opacity: 1;
  margin: 0 0 18rem 13rem;
}
.drawer-submenu {
  list-style: none;
  padding-left: 45rem;
  border-left: 1rem solid rgba(255, 255, 255, 0.08);
}

.drawer-submenu li a {
  display: block;
  padding: 10rem 0;
  color: #8d9cff;
  text-decoration: none;
  font-size: 16rem;
  line-height: 20rem;
}
.drawer-submenu li:first-of-type a {
  padding-top: 0;
}
.drawer-submenu li a:hover {
  color: #c0c9ff;
}
.menu-toggle-btn {
  display: none;
}

@media screen and (max-width: 768px) {
  .top-nav.huong-dan-subpage {
    font-size: 18rem;
    line-height: 44rem;
    color: #ffffff;
    text-align: center;
    justify-content: center;
    padding-right: unset;
    position: relative;
  }
  .x-button {
    position: absolute;
    height: 28rem;
    width: 28rem;
    left: 12rem;
    bottom: 17rem;
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
  }
  .top-nav {
    background: url(../images/bg-menu-header-mb.webp) top center
      no-repeat;
    background-size: cover;
    background-color: #150021b2;
    justify-content: end;
    padding-right: 11rem;
    padding-top: 39rem;
    align-items: flex-start;
    width: 402rem;
    gap: 27rem;
  }
  .logo {
    top: 28rem;
    left: 12rem;
  }
  .logo img {
    width: 101rem;
  }
  .header-language-dropdown {
    padding-top: 0;
  }
  .menu-toggle-btn {
    background: transparent;
    border: none;
    display: block;
    height: 28rem;
    margin-top: 6rem;
  }
  .menu {
    display: none !important;
  }
}