/* 💬 触发按钮 */
.anno-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 0.3em;
  margin-right: 0.1em;
  padding: 0.15em 0.35em;
  border: none;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.1em;
  line-height: 1;
  opacity: 0.85;
  transition: all 0.2s ease;
  vertical-align: middle;
}

.anno-trigger:hover,
.anno-trigger:focus-visible {
  opacity: 1;
  outline: none;
  background: rgba(59, 130, 246, 0.2);
  transform: scale(1.1);
}

/* 弹出的译文气泡（默认隐藏） */
.anno-pop {
  position: absolute;
  z-index: 9999;
  max-width: min(520px, 90vw);
  padding: 16px 20px;
  border-radius: 10px;
  border: 2px solid rgba(59, 130, 246, 0.3);
  background: #fff;
  color: #1f2937;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  font-size: 1em;
  line-height: 1.8;
  display: none;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* 移动端优化 */
@media (max-width: 768px) {
  .anno-pop {
    max-width: 92vw;
    padding: 14px 16px;
    font-size: 0.95em;
    line-height: 1.7;
  }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
  .anno-trigger {
    background: rgba(96, 165, 250, 0.15);
  }
  
  .anno-trigger:hover,
  .anno-trigger:focus-visible {
    background: rgba(96, 165, 250, 0.25);
  }
  
  .anno-pop {
    background: #1f2937;
    color: #f3f4f6;
    border: 2px solid rgba(96, 165, 250, 0.3);
    box-shadow: 0 8px 32px rgba(0,0,0,0.8);
  }
}

/* 显示状态 */
.anno-pop.is-open {
  display: block !important;
  animation: fadeInScale 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: translateY(-4px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* 气泡顶部标签 */
.anno-pop::before {
  content: "💬 白话译文";
  display: block;
  font-size: 0.8em;
  font-weight: 600;
  color: rgba(59, 130, 246, 0.8);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(59, 130, 246, 0.15);
  letter-spacing: 0.5px;
}

@media (prefers-color-scheme: dark) {
  .anno-pop::before {
    color: rgba(96, 165, 250, 0.9);
    border-bottom-color: rgba(96, 165, 250, 0.2);
  }
}

/* 移动端标签优化 */
@media (max-width: 768px) {
  .anno-pop::before {
    font-size: 0.75em;
    margin-bottom: 8px;
    padding-bottom: 6px;
  }
}

/* 底部固定弹窗（所有设备统一） */
.anno-pop.bottom-popup {
  position: fixed !important;
  bottom: 0 !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  top: auto !important;
  max-width: 680px !important;
  width: calc(100% - 32px) !important;
  border-radius: 16px 16px 0 0 !important;
  margin: 0 !important;
  box-shadow: 0 -4px 32px rgba(0,0,0,0.25) !important;
  animation: slideUpFade 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
  padding: 20px 24px !important;
}

/* 移动端全宽显示 */
@media (max-width: 768px) {
  .anno-pop.bottom-popup {
    max-width: 100% !important;
    width: 100% !important;
    left: 0 !important;
    transform: none !important;
    padding: 16px 20px !important;
  }
}

@keyframes slideUpFade {
  from {
    transform: translateX(-50%) translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
}

/* 移动端动画 */
@media (max-width: 768px) {
  @keyframes slideUpFade {
    from {
      transform: translateY(100%);
      opacity: 0;
    }
    to {
      transform: translateY(0);
      opacity: 1;
    }
  }
}

@media (prefers-color-scheme: dark) {
  .anno-pop.bottom-popup {
    box-shadow: 0 -4px 32px rgba(0,0,0,0.8) !important;
  }
}