/* Attachment Preview System Styles */

/* Preview Modal Base Styles */
.attachment-preview-modal {
  backdrop-filter: blur(4px);
}

.attachment-preview-modal .modal-content {
  max-height: 95vh;
  animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-20px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Attachment Grid Styles */
.attachment-grid {
  display: grid;
  gap: 0.75rem;
}

.attachment-thumbnail {
  position: relative;
  overflow: hidden;
  border-radius: 0.75rem;
  transition: all 0.2s ease-in-out;
  cursor: pointer;
}

.attachment-thumbnail:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.attachment-thumbnail img {
  transition: transform 0.3s ease;
}

.attachment-thumbnail:hover img {
  transform: scale(1.05);
}

/* PDF Preview Styles */
.pdf-preview-item {
  border-radius: 0.75rem;
  transition: all 0.2s ease-in-out;
  cursor: pointer;
}

.pdf-preview-item:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px -2px rgba(239, 68, 68, 0.1);
}

.pdf-thumbnail {
  width: 3rem;
  height: 3rem;
  border-radius: 0.5rem;
  overflow: hidden;
  border: 2px solid #fee2e2;
}

.pdf-thumbnail img {
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.pdf-preview-icon {
  transition: all 0.2s ease;
}

.pdf-preview-item:hover .pdf-preview-icon {
  transform: scale(1.1);
}

/* Office Document Styles */
.office-preview-item {
  border-radius: 0.75rem;
  transition: all 0.2s ease-in-out;
  cursor: pointer;
}

.office-preview-item:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px -2px rgba(59, 130, 246, 0.1);
}

.office-document-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.5rem;
  background: linear-gradient(135deg, #dbeafe, #bfdbfe);
  border: 2px solid #dbeafe;
  display: flex;
  align-items: center;
  justify-content: center;
}

.office-preview-icon {
  transition: all 0.2s ease;
}

.office-preview-item:hover .office-preview-icon {
  transform: scale(1.1);
}

/* Text File Styles */
.text-preview-item {
  border-radius: 0.5rem;
  transition: all 0.15s ease;
  cursor: pointer;
}

.text-preview-item:hover {
  transform: translateX(4px);
  border-color: rgba(156, 163, 175, 0.5);
}

.text-preview-content {
  background: #f8fafc;
  border-radius: 0.5rem;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  line-height: 1.6;
  max-height: 60vh;
  overflow-y: auto;
}

.text-preview-content pre {
  margin: 0;
  padding: 1rem;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Document List Styles */
.document-item {
  border-radius: 0.5rem;
  transition: all 0.15s ease;
}

.document-item:hover {
  transform: translateX(4px);
}

.document-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* Office Viewer Styles */
.office-viewer {
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.office-viewer iframe {
  border: 0;
  width: 100%;
  height: 100%;
  border-radius: 0.75rem;
}

.office-viewer-notice {
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  border: 1px solid #bfdbfe;
  border-radius: 0.5rem;
  margin-top: 1rem;
  padding: 0.75rem;
}

/* PDF Viewer Styles */
.pdf-viewer-container {
  max-height: 70vh;
  background: linear-gradient(to bottom, #f8fafc, #f1f5f9);
}

.pdf-viewer-canvas {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  border-radius: 0.5rem;
}

.pdf-controls {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 0.75rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.pdf-control-button {
  transition: all 0.15s ease;
}

.pdf-control-button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px -2px rgba(59, 130, 246, 0.3);
}

.pdf-control-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Image Preview Styles */
.image-preview-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.image-preview-container img {
  border-radius: 0.75rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
}

/* Loading States */
.attachment-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

.loading-spinner {
  border: 3px solid #f3f4f6;
  border-top: 3px solid #3b82f6;
  border-radius: 50%;
  width: 2rem;
  height: 2rem;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Error States */
.attachment-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: #ef4444;
}

.attachment-error i {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.7;
}

/* Download-Only Preview Styles */
.download-only-preview {
  text-align: center;
  padding: 3rem 1rem;
}

.download-only-preview .file-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.7;
}

.download-only-preview h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.download-only-preview p {
  color: #6b7280;
  margin-bottom: 1.5rem;
}

.download-only-preview button {
  font-size: 1.125rem;
  padding: 0.75rem 1.5rem;
  background: #3b82f6;
  color: white;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.download-only-preview button:hover {
  background: #2563eb;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px -2px rgba(59, 130, 246, 0.4);
}

/* Document Type Specific Colors */
.word-document {
  color: #2563eb;
}

.excel-document {
  color: #059669;
}

.powerpoint-document {
  color: #ea580c;
}

.pdf-document {
  color: #dc2626;
}

.text-document {
  color: #6b7280;
}

.archive-document {
  color: #d97706;
}

/* Responsive Design */
@media (max-width: 640px) {
  .attachment-preview-modal .modal-content {
    margin: 0.5rem;
    max-height: 98vh;
  }

  .pdf-controls {
    flex-direction: column;
    gap: 0.75rem;
  }

  .pdf-controls>div {
    justify-content: center;
  }

  .office-viewer {
    height: 60vh;
  }

  .text-preview-content {
    max-height: 50vh;
    font-size: 0.875rem;
  }

  .download-only-preview {
    padding: 2rem 1rem;
  }

  .download-only-preview .file-icon {
    font-size: 3rem;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .pdf-viewer-container {
    background: linear-gradient(to bottom, #1f2937, #111827);
  }

  .pdf-controls {
    background: rgba(31, 41, 55, 0.95);
  }

  .pdf-thumbnail {
    border-color: #7f1d1d;
  }

  .office-document-icon {
    background: linear-gradient(135deg, #1e3a8a, #1e40af);
    border-color: #1e40af;
  }

  .office-viewer-notice {
    background: linear-gradient(135deg, #1e3a8a, #1e40af);
    border-color: #1e40af;
  }

  .text-preview-content {
    background: #111827;
    color: #f3f4f6;
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {

  .attachment-thumbnail:hover,
  .pdf-preview-item:hover,
  .office-preview-item:hover,
  .text-preview-item:hover,
  .document-item:hover {
    transform: none;
  }

  .attachment-thumbnail,
  .pdf-preview-item,
  .office-preview-item,
  .text-preview-item,
  .document-item {
    touch-action: manipulation;
  }
}

/* Focus States for Accessibility */
.attachment-thumbnail:focus,
.pdf-preview-item:focus,
.office-preview-item:focus,
.text-preview-item:focus,
.document-item:focus {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

.pdf-control-button:focus {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {

  .attachment-thumbnail,
  .pdf-preview-item,
  .office-preview-item,
  .text-preview-item,
  .document-item {
    border: 2px solid;
  }

  .pdf-controls,
  .office-viewer-notice {
    border: 1px solid;
  }
}

/* Print Styles */
@media print {
  .attachment-preview-modal {
    display: none !important;
  }
}