/* 系统初始加载动画 - 科技蓝主题 */
#app-loading {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #081528 0%, #0a1d35 40%, #0c2445 70%, #081528 100%);
  z-index: 9999;
}

/* 中心脉冲图标 */
#app-loading::before {
  content: "";
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #2563eb 0%, #409eff 100%);
  box-shadow: 0 0 40px rgba(64, 158, 255, 0.3), 0 0 80px rgba(64, 158, 255, 0.1);
  animation: loading-pulse 2s ease-in-out infinite;
}

/* 外圈旋转光环 */
#app-loading::after {
  content: "";
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid rgba(64, 158, 255, 0.1);
  border-top-color: #409eff;
  box-shadow: 0 0 20px rgba(64, 158, 255, 0.2);
  animation: loading-spin 0.8s linear infinite;
}

@keyframes loading-pulse {
  0%, 100% {
    transform: scale(0.85);
    opacity: 0.8;
  }
  50% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes loading-spin {
  to { transform: rotate(360deg); }
}