html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background: #f2f2f2;
}

#pdf-viewer {
  width: min(100%, 1100px);
  margin: 0 auto;
  box-sizing: border-box;
}

.pdf-loading {
  min-height: min(70vh, 640px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: #666;
  font: 14px/1.5 sans-serif;
}

.pdf-loading-spinner {
  width: 36px;
  height: 36px;
  border: 4px solid rgba(0, 0, 0, 0.12);
  border-top-color: #2563eb;
  border-radius: 50%;
  animation: pdf-loading-spin 0.8s linear infinite;
}

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

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