.pptist-host {
  position: relative;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--color-bg, #f5f7fa);
}

.pptist-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  opacity: 0;
  background: #fff;
  transition: opacity 160ms ease;
}

.pptist-host.is-ready .pptist-frame {
  opacity: 1;
}

.pptist-loading {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--color-text-secondary, #64748b);
  font-size: 14px;
}

.pptist-host.is-ready .pptist-loading {
  display: none;
}

.pptist-upload-status {
  position: absolute;
  z-index: 3;
  right: 12px;
  bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 7px 11px;
  border: 1px solid var(--color-border, #dbe2ea);
  border-radius: 6px;
  background: var(--color-bg-card, #fff);
  background: color-mix(in srgb, var(--color-bg-card, #fff) 94%, transparent);
  color: var(--color-text, #1e293b);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(8px);
  font-size: 13px;
  font-weight: 600;
  pointer-events: none;
}

.pptist-upload-status[hidden] {
  display: none;
}

.pptist-upload-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border, #dbe2ea);
  border-top-color: var(--color-primary, #2563eb);
  border-radius: 50%;
  animation: pptist-spin 700ms linear infinite;
}

.pptist-loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border, #dbe2ea);
  border-top-color: var(--color-primary, #2563eb);
  border-radius: 50%;
  animation: pptist-spin 700ms linear infinite;
}

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

#presentation-container.presentation-fullwidth {
  position: absolute;
  inset: 0;
  z-index: 5;
}

@media (max-width: 768px) {
  .pptist-upload-status {
    right: 8px;
    bottom: 58px;
    max-width: calc(100% - 16px);
  }
}