/* Language pack switcher (public nav, user panel topbar, admin menubar) */
.fe-lang-switcher {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.fe-lang-switcher__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.1);
  color: #f8fafc;
  border-radius: 0.35rem;
  padding: 0.32rem 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  line-height: 1.2;
  font-family: inherit;
}
.fe-lang-switcher__btn:hover,
.fe-lang-switcher.is-open .fe-lang-switcher__btn {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.35);
}
.fe-lang-switcher__flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 0;
}
.fe-lang-switcher__flag-img {
  display: block;
  width: 1.25rem;
  height: auto;
  aspect-ratio: 4 / 3;
  max-height: 0.95rem;
  border-radius: 2px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.1);
}
.fe-lang-switcher__flag-fallback {
  font-size: 1.05rem;
  line-height: 1;
  opacity: 0.9;
}
.fe-lang-switcher--compact .fe-lang-switcher__label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.fe-lang-switcher__chev {
  font-size: 0.95rem;
  opacity: 0.85;
  transition: transform 0.15s ease;
  color: inherit;
}
.fe-lang-switcher.is-open .fe-lang-switcher__chev {
  transform: rotate(180deg);
}

/* Dropdown — minimal “surface” panel (flat rows, subtle separator, accent stripe on active) */
.fe-lang-switcher__menu {
  --fe-lang-line: rgba(15, 23, 42, 0.08);
  --fe-lang-item-fg: #374151;
  --fe-lang-item-fg-hover: #111827;
  --fe-lang-item-fg-active: #0f172a;
  --fe-lang-item-bg-hover: rgba(15, 23, 42, 0.045);
  /* Active row: align with site brand (Nav → --fe-mkt-*), then --fe-accent — avoids accent-only purple mismatch with header/topbar */
  --fe-lang-brand: var(--fe-mkt-primary, var(--fe-accent, #2563eb));
  --fe-lang-item-bg-active: color-mix(in srgb, var(--fe-lang-brand) 10%, #ffffff);
  --fe-lang-accent: var(--fe-mkt-primary-light, var(--fe-lang-brand));
  position: absolute;
  top: calc(100% + 0.375rem);
  right: 0;
  width: max-content;
  min-width: 0;
  max-width: min(20rem, calc(100vw - 1.5rem));
  margin: 0;
  padding: 4px;
  list-style: none;
  background: #fff;
  color: var(--fe-lang-item-fg);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 10px;
  box-shadow:
    0 0 0 1px rgba(15, 23, 42, 0.04),
    0 4px 6px rgba(15, 23, 42, 0.04),
    0 12px 24px rgba(15, 23, 42, 0.1);
  z-index: 1200;
}
.fe-lang-switcher__menu[hidden] {
  display: none !important;
}
.fe-lang-switcher__menu > li {
  margin: 0;
  padding: 0;
}
.fe-lang-switcher__menu > li:not(:last-child) {
  border-bottom: 1px solid var(--fe-lang-line);
}
.fe-lang-switcher__menu > li:first-child .fe-lang-switcher__item {
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
}
.fe-lang-switcher__menu > li:last-child .fe-lang-switcher__item {
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
}
.fe-lang-switcher__menu .fe-lang-switcher__item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  padding: 0.5rem 0.62rem 0.5rem 0.5rem; /* 4px 左条 + 内边距，与后台选中态留白一致 */
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--fe-lang-item-fg);
  text-decoration: none;
  border: none;
  border-left: 4px solid transparent;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  white-space: nowrap;
  transition:
    background-color 0.12s ease,
    color 0.12s ease,
    border-left-color 0.12s ease;
}
.fe-lang-switcher__menu .fe-lang-switcher__item .fe-lang-switcher__flag-img {
  width: 18px;
  height: auto;
  max-height: 13px;
  flex-shrink: 0;
  border-radius: 1px;
}
.fe-lang-switcher__menu .fe-lang-switcher__item-label {
  flex: 0 1 auto;
  color: inherit;
}
.fe-lang-switcher__menu .fe-lang-switcher__item:hover,
.fe-lang-switcher__menu .fe-lang-switcher__item:hover .fe-lang-switcher__item-label {
  background-color: var(--fe-lang-item-bg-hover);
  color: var(--fe-lang-item-fg-hover);
}
.fe-lang-switcher__menu .fe-lang-switcher__item.is-active,
.fe-lang-switcher__menu .fe-lang-switcher__item.is-active .fe-lang-switcher__item-label {
  border-left-color: var(--fe-lang-accent);
  background-color: var(--fe-lang-item-bg-active);
  color: var(--fe-lang-item-fg-active);
  font-weight: 600;
}
.fe-lang-switcher__menu .fe-lang-switcher__item.is-active .fe-lang-switcher__flag-img {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--fe-lang-accent) 38%, transparent);
}
.fe-lang-switcher__menu .fe-lang-switcher__item:focus-visible {
  outline: 2px solid var(--fe-lang-accent);
  outline-offset: 1px;
}
/* Isolate dark-toolbar contexts from link colors; active/hover tints use --fe-lang-* from .fe-lang-switcher__menu */
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__menu .fe-lang-switcher__item,
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__menu .fe-lang-switcher__item .fe-lang-switcher__item-label,
.fe-site-header .fe-lang-switcher__menu .fe-lang-switcher__item,
.fe-site-header .fe-lang-switcher__menu .fe-lang-switcher__item .fe-lang-switcher__item-label,
.fe-admin-menubar .fe-lang-switcher__menu .fe-lang-switcher__item,
.fe-admin-menubar .fe-lang-switcher__menu .fe-lang-switcher__item .fe-lang-switcher__item-label,
.fe-lang-switcher-host--drawer .fe-lang-switcher__menu .fe-lang-switcher__item,
.fe-lang-switcher-host--drawer .fe-lang-switcher__menu .fe-lang-switcher__item .fe-lang-switcher__item-label {
  color: var(--fe-lang-item-fg);
}
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__menu .fe-lang-switcher__item:hover,
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__menu .fe-lang-switcher__item:hover .fe-lang-switcher__item-label,
.fe-site-header .fe-lang-switcher__menu .fe-lang-switcher__item:hover,
.fe-site-header .fe-lang-switcher__menu .fe-lang-switcher__item:hover .fe-lang-switcher__item-label,
.fe-admin-menubar .fe-lang-switcher__menu .fe-lang-switcher__item:hover,
.fe-admin-menubar .fe-lang-switcher__menu .fe-lang-switcher__item:hover .fe-lang-switcher__item-label,
.fe-lang-switcher-host--drawer .fe-lang-switcher__menu .fe-lang-switcher__item:hover,
.fe-lang-switcher-host--drawer .fe-lang-switcher__menu .fe-lang-switcher__item:hover .fe-lang-switcher__item-label {
  color: var(--fe-lang-item-fg-hover);
  background-color: var(--fe-lang-item-bg-hover);
}
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__menu .fe-lang-switcher__item.is-active,
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__menu .fe-lang-switcher__item.is-active .fe-lang-switcher__item-label,
.fe-site-header .fe-lang-switcher__menu .fe-lang-switcher__item.is-active,
.fe-site-header .fe-lang-switcher__menu .fe-lang-switcher__item.is-active .fe-lang-switcher__item-label,
.fe-admin-menubar .fe-lang-switcher__menu .fe-lang-switcher__item.is-active,
.fe-admin-menubar .fe-lang-switcher__menu .fe-lang-switcher__item.is-active .fe-lang-switcher__item-label,
.fe-lang-switcher-host--drawer .fe-lang-switcher__menu .fe-lang-switcher__item.is-active,
.fe-lang-switcher-host--drawer .fe-lang-switcher__menu .fe-lang-switcher__item.is-active .fe-lang-switcher__item-label {
  color: var(--fe-lang-item-fg-active);
  background-color: var(--fe-lang-item-bg-active);
  border-left-color: var(--fe-lang-accent);
}

/* User panel topbar — same trigger recipe as admin menubar（细边框 + 半透底，与后台一致） */
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher-host--topbar {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__btn {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
  padding: 0.38rem 0.45rem;
  border-radius: 0.4rem;
  box-shadow: none;
}
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__btn:hover,
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher.is-open .fe-lang-switcher__btn {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
}
body.page-panel:not(.page-admin) .fe-topbar .fe-lang-switcher__chev {
  opacity: 0.92;
  font-size: 0.9rem;
}
/* Admin menubar — after「访问前台」 */
.fe-admin-menubar .fe-admin-nav-lang {
  display: inline-flex;
  align-items: center;
  padding: 0 0.35rem 0 0;
  flex-shrink: 0;
}
.fe-admin-menubar .fe-lang-switcher__btn {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
  padding: 0.38rem 0.45rem;
}
.fe-admin-menubar .fe-lang-switcher__btn:hover,
.fe-admin-menubar .fe-lang-switcher.is-open .fe-lang-switcher__btn {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
}
/* Public marketing header — icon-only beside login/register */
/* Public marketing header — trigger 与后台同系（深色顶栏上细边框 capsule） */
.fe-site-header #auth-nav .fe-lang-switcher-host--public {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.fe-site-header #auth-nav .fe-lang-switcher__btn {
  border: 1px solid rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.1);
  color: #f1f5f9;
  padding: 0.32rem 0.42rem;
  border-radius: 0.4rem;
}
.fe-site-header #auth-nav .fe-lang-switcher__btn:hover,
.fe-site-header #auth-nav .fe-lang-switcher.is-open .fe-lang-switcher__btn {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.38);
}
.fe-site-header #auth-nav .fe-lang-switcher__chev {
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.9rem;
}
/* Mobile drawer head (user panel) */
/* Mobile drawer：与后台顶栏语言按钮同源 */
.fe-lang-switcher-host--drawer .fe-lang-switcher__btn {
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.1);
  color: #f1f5f9;
  padding: 0.3rem 0.4rem;
  font-size: 0.78rem;
}
.fe-lang-switcher-host--drawer .fe-lang-switcher__btn:hover,
.fe-lang-switcher-host--drawer .fe-lang-switcher.is-open .fe-lang-switcher__btn {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.4);
}
.fe-lang-switcher-host--drawer .fe-lang-switcher__menu {
  right: 0;
  left: auto;
}
.fe-panel-nav-drawer-head__actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}
@media (max-width: 991px) {
  body.page-panel:not(.page-admin) .fe-lang-switcher-host--drawer {
    display: inline-flex;
  }
}

/* H5 public nav drawer (light panel) */
@media (max-width: 899.98px) {
  .fe-site-header .fe-public-nav-panel-body #auth-nav .fe-lang-switcher-host--public {
    width: 100%;
    justify-content: flex-end;
    margin-top: 0.15rem;
  }
  .fe-site-header .fe-public-nav-panel-body #auth-nav .fe-lang-switcher__btn {
    color: #1e293b;
    border: 1px solid #dbe4f0;
    background: #f8fafc;
    padding: 0.35rem 0.5rem;
  }
  .fe-site-header .fe-public-nav-panel-body #auth-nav .fe-lang-switcher__chev {
    color: #64748b;
  }
}