.container {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  padding-top: 44px; /* titlebar height */
  background: var(--bg);
}
.iframe {
  flex: 1;
  width: 100%;
  height: 100%;
  border: none;
  transition: opacity var(--duration-fast) ease;
}
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
  z-index: 1;
}
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--text-secondary);
  border-radius: 50%;
  animation: hana-spin 0.8s linear infinite;
}
.retryBtn {
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.8rem;
}
.retryBtn:hover {
  background: var(--bg-hover);
}
.error {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--text-muted);
  font-size: 0.85rem;
}
