/* Header proportions and spacing follow the supplied Thai-site reference. */
@media (min-width: 992px) {
  .en-header {
    height: 82px !important;
    min-height: 82px !important;
  }

  .logo-area {
    width: clamp(200px, 16.5vw, 316px);
    flex: 0 0 clamp(200px, 16.5vw, 316px);
    height: 82px !important;
    padding-inline: 4px;
    padding-top: 8px !important;
    padding-bottom: 8px !important;
  }

  .logo-area img {
    width: 100% !important;
    height: auto !important;
    max-height: 62px !important;
    object-fit: contain;
  }

  .menu-area,
  .lang-area {
    height: 82px !important;
  }

  .menu-area .container-fluid {
    padding-inline: 15px;
  }

  .menu-area .navbar-nav {
    gap: 0;
  }

  .lang-area {
    width: clamp(80px, 8.4vw, 160px) !important;
    flex: 0 0 clamp(80px, 8.4vw, 160px) !important;
  }

  .menu-area .navbar-nav .nav-link {
    height: 60px !important;
    line-height: 60px !important;
    padding-inline: 16px;
    column-gap: 12px;
  }
}

/* Language switcher: proportions and typography used by the Thai website. */
.lang-area {
  background-color: #294f79 !important;
  color: #fff !important;
  font-family: 'Prompt', 'Segoe UI', Arial, sans-serif !important;
  font-size: 18px !important;
  font-weight: 600 !important;
  line-height: 1 !important;
  white-space: nowrap;
}

.lang-area a {
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 2px;
  color: #fff !important;
  text-decoration: none !important;
  transition: color .2s ease;
}

.lang-area a:hover,
.lang-area a:focus {
  color: #ffc16f !important;
}

/* Keep the navigation typography identical on every page. */
.menu-area .navbar-nav .nav-link {
  display: flex !important;
  flex-wrap: nowrap;
  white-space: nowrap;
  align-items: center;
  column-gap: 8px;
  font-family: 'Prompt', 'Segoe UI', Arial, sans-serif !important;
  font-size: 16px !important;
  font-weight: 400 !important;
  line-height: 60px !important;
}

.menu-area .navbar-nav .nav-link > i {
  margin: 0 !important;
  font-size: 18px !important;
}

/* Give every leading menu icon the same footprint, regardless of glyph shape. */
.menu-area .navbar-nav .nav-link > i:first-child {
  width: 20px;
  flex: 0 0 20px;
  text-align: center;
}

/* Keep dropdown arrows separate from the icon-to-label spacing above. */
.menu-area .navbar-nav .nav-link > .bi-chevron-down {
  width: auto;
  flex: 0 0 auto;
  margin-left: 0 !important;
}

@media (min-width: 1200px) {
  .menu-area .navbar-nav .nav-link {
    column-gap: 12px;
  }
}

/* Keep hover and active text colors identical, including the Research page. */
.menu-area .navbar-nav .nav-link:hover,
.menu-area .navbar-nav .nav-link:focus,
.menu-area .navbar-nav .nav-link.active {
  color: #fff !important;
  background-color: #294f79 !important;
}

.menu-area .dropdown-menu .dropdown-item {
  display: flex !important;
  flex-wrap: nowrap;
  align-items: center;
  column-gap: 12px;
  color: #26384a;
  font-family: 'Prompt', 'Segoe UI', Arial, sans-serif !important;
  font-size: 16px !important;
  font-weight: 400 !important;
  line-height: 1.5 !important;
  transition: background-color .2s, color .2s, transform .2s;
}

.menu-area .dropdown-menu .dropdown-item i {
  margin: 0 !important;
  font-size: 18px !important;
}

/* Use one icon box so every dropdown label begins at the same position. */
.menu-area .dropdown-menu .dropdown-item > i:first-child {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #e8840e !important;
  background-color: #fff2e2 !important;
  border-radius: 9px;
  text-align: center;
  transition: background-color .2s, color .2s;
}

.menu-area .dropdown-menu .dropdown-item:hover,
.menu-area .dropdown-menu .dropdown-item:focus,
.menu-area .dropdown-menu .dropdown-item.active {
  color: #fff !important;
  background-color: #24496f !important;
  transform: translateX(3px);
}

.menu-area .dropdown-menu .dropdown-item:hover > i:first-child,
.menu-area .dropdown-menu .dropdown-item:focus > i:first-child,
.menu-area .dropdown-menu .dropdown-item.active > i:first-child {
  color: #fff !important;
  background-color: rgba(255, 255, 255, .16) !important;
}

@media (max-width: 991px) {
  .en-header,
  .logo-area,
  .menu-area,
  .lang-area {
    height: auto !important;
    min-height: 0 !important;
  }

  .menu-area .navbar-nav .nav-link {
    height: 54px !important;
    font-size: 16px !important;
    line-height: 54px !important;
  }

  .lang-area {
    width: 100% !important;
    padding: 12px 20px !important;
    font-size: 17px !important;
  }
}