/*
 * 启动遮罩：主脚本尚未启动时的加载画面。
 * 样式与原站 index.html 内联样式保持一致。
 */
.loading-screen {
  z-index: 20;
  color: #d9edf5;
  text-align: center;
  background: #071c2b;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 16px;
  font: 16px sans-serif;
  display: flex;
  position: absolute;
  inset: 0;
}

.loading-screen[hidden] {
  display: none;
}

.loading-screen strong {
  color: #75d5ef;
  letter-spacing: 4px;
  font-size: 24px;
}

.loading-screen p {
  margin: 0;
}

.loading-screen button {
  color: #fff;
  cursor: pointer;
  background: #12384e;
  border: 1px solid #75d5ef;
  padding: 8px 20px;
}

.loading-spinner {
  border: 3px solid #244657;
  border-top-color: #75d5ef;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  animation: 1s linear infinite loading-spin;
}

.loading-screen[data-error='true'] .loading-spinner {
  display: none;
}

#boot-loading {
  position: fixed;
}

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

@media (prefers-reduced-motion: reduce) {
  .loading-spinner {
    animation: none;
  }
}