/* ===== 公共语言切换器（首页 / 个人中心 / 工具页面通用） ===== */
.lang-switcher {
  position: relative;
  flex-shrink: 0;
  z-index: 50;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: 1.5px solid rgba(99, 102, 241, 0.15);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 10px;
  color: #4B5563;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  white-space: nowrap;
}

.lang-btn:hover {
  border-color: rgba(99, 102, 241, 0.4);
  background: rgba(99, 102, 241, 0.06);
  color: #6366F1;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: #fff;
  border: 1px solid rgba(99, 102, 241, 0.12);
  border-radius: 12px;
  padding: 6px;
  list-style: none;
  margin: 0;
  box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.16), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}

.lang-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-menu li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: #4B5563;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s;
}

.lang-menu li:hover {
  background: rgba(99, 102, 241, 0.08);
  color: #6366F1;
}

.lang-menu li.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(236, 72, 153, 0.12) 100%);
  color: #6366F1;
  font-weight: 600;
}

.lang-menu li span:first-child { font-size: 16px; }

/* 工具页面面包屑行内的紧凑切换器 */
.lang-switcher.compact .lang-btn {
  padding: 6px 10px;
  font-size: 12.5px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(6px);
}

@media (max-width: 768px) {
  .lang-btn { padding: 6px 9px; font-size: 12px; }
  .lang-btn svg:first-child { display: none; }
  .lang-menu { min-width: 140px; }
}