/* 语言切换按钮样式 */
.lang-switch-container {
  margin-left: 15px;
}

.lang-switch-btn {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06));
  color: #f2f8ff;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.24s ease, box-shadow 0.32s cubic-bezier(0.22, 1, 0.36, 1), background 0.32s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 8px 20px rgba(5, 14, 36, 0.36);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.lang-switch-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(5, 14, 36, 0.44);
  background: linear-gradient(145deg, rgba(125, 211, 252, 0.26), rgba(37, 99, 235, 0.2));
}

.lang-switch-btn i {
  font-size: 1rem;
  color: #bcecff;
}

.lang-text {
  position: relative;
  width: 66px;
  height: 19px;
  display: inline-block;
}

.lang-token,
.lang-divider {
  position: absolute;
  top: 0;
  font-weight: 600;
  line-height: 1.2;
}

.lang-token {
  transition: left 0.24s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.2s ease, transform 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}

.lang-divider {
  left: 29px;
  opacity: 0.65;
}

.token-en {
  left: 0;
}

.token-zh {
  left: 37px;
}

.lang-switch-btn[data-language='en'] .token-en {
  left: 0;
  opacity: 1;
  transform: translateX(0);
}

.lang-switch-btn[data-language='en'] .token-zh {
  left: 37px;
  opacity: 0.72;
  transform: translateX(0);
}

.lang-switch-btn:active {
  transform: scale(0.985);
}

.lang-switch-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(125, 211, 252, 0.45), 0 12px 24px rgba(5, 14, 36, 0.42);
}

.lang-switch-btn[data-language='zh'] {
  background: linear-gradient(145deg, rgba(37, 99, 235, 0.28), rgba(125, 211, 252, 0.18));
}

.lang-switch-btn[data-language='zh'] .token-en {
  left: 37px;
  opacity: 0.72;
  transform: translateX(0);
}

.lang-switch-btn[data-language='zh'] .token-zh {
  left: 0;
  opacity: 1;
  transform: translateX(0);
}

/* 响应式调整 */
@media (max-width: 768px) {
  .lang-switch-container {
    margin: 0 4px 0 8px;
  }
  
  .lang-switch-btn {
    width: auto;
    min-width: 92px;
    padding: 7px 10px;
    justify-content: center;
  }

  .lang-text {
    width: 60px;
  }

  .lang-divider {
    left: 26px;
  }

  .token-zh,
  .lang-switch-btn[data-language='en'] .token-zh,
  .lang-switch-btn[data-language='zh'] .token-en {
    left: 33px;
  }
}

@media (max-width: 430px) {
  .lang-switch-btn {
    min-width: 78px;
    padding: 6px 9px;
    gap: 4px;
  }

  .lang-switch-btn i {
    display: none;
  }

  .lang-text {
    width: 55px;
    height: 17px;
    font-size: 0.84rem;
  }

  .lang-divider {
    left: 24px;
  }

  .token-zh,
  .lang-switch-btn[data-language='en'] .token-zh,
  .lang-switch-btn[data-language='zh'] .token-en {
    left: 30px;
  }
}