.loading-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 300px;
  flex-direction: column;
}

.loading {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(76, 175, 80, 0.1);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-text {
  margin-top: 20px;
  color: var(--text-secondary);
  font-size: 14px;
  letter-spacing: 1px;
}

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

/* 添加脉冲加载效果 */
.loading-pulse {
  width: 20px;
  height: 20px;
  background-color: var(--primary-color);
  border-radius: 50%;
  margin: 0 5px;
  animation: pulse 1.5s infinite ease-in-out;
}

.loading-pulse:nth-child(2) {
  animation-delay: 0.2s;
}

.loading-pulse:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(0.5);
    opacity: 0.5;
  }
  50% {
    transform: scale(1);
    opacity: 1;
  }
}