/* 加载旋转图标样式 */
.tomwebapp-loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--accent-color, #409eff);
  border-radius: 50%;
  animation: tomwebapp-spin 0.8s linear infinite;
}

.tomwebapp-loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px 20px;
  min-height: 200px;
}

.tomwebapp-loading-text {
  color: var(--text-secondary, #999);
  font-size: 14px;
}

@keyframes tomwebapp-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* 呼吸动画 - 用于思考图标 */
@keyframes breathing {
  0%, 100% {
    opacity: 0.6;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

/* 思考图标的呼吸动画 */
.send-thinking-icon {
  animation: breathing 2s ease-in-out infinite;
}

/* 当按钮处于loading或waiting状态时，显示思考图标并应用呼吸动画 */
#btn-send-message.loading .send-thinking-icon,
#btn-send-message.waiting .send-thinking-icon {
  display: block;
  animation: breathing 2s ease-in-out infinite;
}

/* 小尺寸加载图标 */
.tomwebapp-loading-spinner.small {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

/* 大尺寸加载图标 */
.tomwebapp-loading-spinner.large {
  width: 60px;
  height: 60px;
  border-width: 6px;
}

/* 内联加载图标 */
.tomwebapp-loading-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.tomwebapp-loading-inline .tomwebapp-loading-spinner {
  width: 16px;
  height: 16px;
  border-width: 2px;
}