/* PDF Viewer Styles */
.pdf-viewer-container {
  margin: 1rem 0;
  padding: 0.5rem;
  background-color: var(--bs-light, #f8f9fa);
  border-radius: 0.5rem;
  border: 1px solid var(--bs-border-color, #dee2e6);
}

/* PDF Viewer as preview image */
.pdf-viewer-container.preview-img {
  padding: 0;
  margin: 0;
  border: none;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pdf-viewer-container.preview-img .pdf-page-container {
  margin: 0;
  padding: 0;
  box-shadow: none;
  background: transparent;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pdf-viewer-container.preview-img canvas {
  width: 100%;
  height: auto;
  border: none;
  border-radius: 0.25rem;
  object-fit: contain;
}

.pdf-viewer-container.preview-img .pdf-page-label {
  display: none;
}

.pdf-viewer-container.preview-img .pdf-pages-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pdf-pages-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

.pdf-page-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
  background: white;
  padding: 0.5rem;
  border-radius: 0.25rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.pdf-page-container canvas {
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--bs-border-color, #dee2e6);
}

.pdf-page-label {
  font-size: 0.875rem;
  color: var(--bs-secondary, #6c757d);
  font-weight: 500;
  text-align: center;
  padding: 0.25rem 0.5rem;
}

.pdf-info {
  text-align: center;
  font-size: 0.875rem;
  color: var(--bs-secondary, #6c757d);
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--bs-border-color, #dee2e6);
}

.pdf-loading {
  text-align: center;
  padding: 2rem;
  color: var(--bs-secondary, #6c757d);
}

.pdf-loading::before {
  content: '';
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--bs-border-color, #dee2e6);
  border-top-color: var(--bs-primary, #0d6efd);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 0.5rem;
  vertical-align: middle;
}

.pdf-error {
  padding: 1rem;
  background-color: var(--bs-danger-bg-subtle, #f8d7da);
  color: var(--bs-danger-text-emphasis, #842029);
  border: 1px solid var(--bs-danger-border-subtle, #f1aeb5);
  border-radius: 0.25rem;
  text-align: center;
}

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

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .pdf-viewer-container {
    background-color: var(--bs-dark, #212529);
    border-color: var(--bs-border-color, #495057);
  }

  .pdf-page-container {
    background: var(--bs-dark, #212529);
  }

  .pdf-page-container canvas {
    border-color: var(--bs-border-color, #495057);
  }
}

/* Collapsible PDF Viewer */
.pdf-collapsible {
  margin: 1rem 0;
  border: 1px solid var(--bs-border-color, #dee2e6);
  border-radius: 0.5rem;
  background-color: var(--bs-light, #f8f9fa);
  overflow: hidden;
}

.pdf-collapsible summary {
  padding: 1rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--bs-body-color, #212529);
  background-color: var(--bs-light, #f8f9fa);
  border-bottom: 1px solid var(--bs-border-color, #dee2e6);
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color 0.2s ease;
}

.pdf-collapsible summary:hover {
  background-color: var(--bs-secondary-bg, #e9ecef);
}

.pdf-collapsible summary::marker {
  display: none;
  content: '';
}

.pdf-collapsible summary::-webkit-details-marker {
  display: none;
}

.pdf-collapsible summary::after {
  content: '▼';
  font-size: 0.8rem;
  color: var(--bs-secondary, #6c757d);
  transition: transform 0.3s ease;
  margin-left: 1rem;
}

.pdf-collapsible[open] summary::after {
  transform: rotate(180deg);
}

.pdf-collapsible .pdf-viewer-container {
  margin: 0;
  padding: 0.75rem;
  border: none;
  background-color: transparent;
}

/* Responsive design */
@media (max-width: 768px) {
  .pdf-page-container {
    padding: 0.5rem;
  }

  .pdf-page-container canvas {
    width: 100%;
  }

  .pdf-collapsible summary {
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

  .pdf-collapsible .pdf-viewer-container {
    padding: 1rem;
  }
}