/* VB Oil & Gas Energy · language switcher */
.vb-lang-switcher {
  position: relative;
  z-index: 1200;
  font-family: Montserrat, "Segoe UI", sans-serif;
}

.vb-lang-switcher--header {
  margin-left: 12px;
}

.vb-lang-switcher__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(10, 10, 10, 0.55);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}

.vb-lang-switcher__btn:hover,
.vb-lang-switcher__btn[aria-expanded="true"] {
  border-color: rgba(168, 0, 6, 0.65);
  background: rgba(168, 0, 6, 0.18);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.vb-lang-switcher__btn:active {
  transform: scale(0.98);
}

.vb-lang-switcher__globe {
  width: 15px;
  height: 15px;
  opacity: 0.9;
}

.vb-lang-switcher__menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 168px;
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(12, 12, 12, 0.96);
  backdrop-filter: blur(16px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.98);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
}

.vb-lang-switcher__menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.vb-lang-switcher__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: #f2f2f2;
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
  box-sizing: border-box;
}

.vb-lang-switcher__option:hover {
  background: rgba(168, 0, 6, 0.14);
  color: #fff;
}

.vb-lang-switcher__option.is-active {
  background: rgba(168, 0, 6, 0.22);
  color: #fff;
}

.vb-lang-switcher__code {
  font-size: 11px;
  letter-spacing: 0.08em;
  opacity: 0.72;
}

.vb-lang-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 8, 8, 0.72);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.vb-lang-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

.vb-lang-overlay__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 28px 36px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  background: rgba(18, 18, 18, 0.95);
  color: #fff;
  transform: translateY(8px) scale(0.96);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.vb-lang-overlay.is-active .vb-lang-overlay__card {
  transform: translateY(0) scale(1);
}

.vb-lang-overlay__spinner {
  width: 34px;
  height: 34px;
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-top-color: #a80006;
  border-radius: 50%;
  animation: vb-lang-spin 0.75s linear infinite;
}

.vb-lang-overlay__text {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  opacity: 0.88;
}

@keyframes vb-lang-spin {
  to { transform: rotate(360deg); }
}

/* Header dropdown (existing theme) */
.head-top-links .dropdown-menu a.active {
  color: #a80006;
  font-weight: 700;
}

.head-top-links .dropdown-menu a {
  transition: color 0.2s ease, background 0.2s ease;
}

@media (max-width: 767px) {
  .vb-lang-switcher--header {
    margin-left: 0;
  }
}

.vb-mobile-menu .vb-lang-switcher {
  z-index: 1;
}

.vb-mobile-menu__lang-slot {
  margin-bottom: 16px;
}

.vb-mobile-menu .vb-lang-switcher--mobile {
  margin: 0;
  width: 100%;
}

.vb-mobile-menu .vb-lang-switcher--mobile .vb-lang-switcher__btn {
  width: 100%;
  justify-content: center;
  box-sizing: border-box;
}

.vb-mobile-menu .vb-lang-switcher__menu {
  z-index: 30;
}

.vb-mobile-menu--sub-open .vb-mobile-menu__head,
.vb-mobile-menu--sub-open .vb-mobile-menu__nav,
.vb-mobile-menu--sub-open .vb-mobile-menu__footer,
.vb-mobile-menu--sub-open .vb-mobile-menu__lang-slot,
.vb-mobile-menu--sub-open .vb-lang-switcher--mobile {
  display: none !important;
}

html[lang="zh-Hans"] body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Montserrat, "Segoe UI", sans-serif;
}