/**
 * Document Viewer Styles
 * Modal viewer for PDFs, Office documents, text files, and media
 */

/* Modal Container */
.doc-viewer-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.doc-viewer-modal.doc-viewer-visible {
  opacity: 1;
}

.doc-viewer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
}

.doc-viewer-container {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 95vw;
  max-width: 1400px;
  height: 90vh;
  background: var(--content-bg, #fff);
  border-radius: 12px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  overflow: hidden;
  transform: scale(0.95) translateY(10px);
  transition: transform 0.2s ease;
}

.doc-viewer-modal.doc-viewer-visible .doc-viewer-container {
  transform: scale(1) translateY(0);
}

/* Header */
.doc-viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--sidebar-bg, #f8fafc);
  border-bottom: 1px solid var(--border-color, #e5e7eb);
  flex-shrink: 0;
}

.doc-viewer-title {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.doc-viewer-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.doc-viewer-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--content-text, #1f2937);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-viewer-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.doc-viewer-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--content-bg, #fff);
  border: 1px solid var(--border-color, #e5e7eb);
  border-radius: 6px;
  color: var(--content-text, #1f2937);
  font-size: 0.875rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

.doc-viewer-action-btn:hover {
  background: var(--hover-bg, #f3f4f6);
  border-color: var(--primary-color, #667eea);
}

.doc-viewer-action-text {
  display: none;
}

@media (min-width: 640px) {
  .doc-viewer-action-text {
    display: inline;
  }
}

.doc-viewer-close-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary, #6b7280);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.doc-viewer-close-btn:hover {
  background: var(--hover-bg, #f3f4f6);
  color: var(--content-text, #1f2937);
}

/* Body */
.doc-viewer-body {
  flex: 1;
  overflow: hidden;
  background: var(--content-bg, #fff);
}

/* Frame Container (PDF, Office docs) */
.doc-viewer-frame-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.doc-viewer-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: #f5f5f5;
}

/* Loading State */
.doc-viewer-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--content-bg, #fff);
  color: var(--text-secondary, #6b7280);
}

.doc-viewer-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color, #e5e7eb);
  border-top-color: var(--primary-color, #667eea);
  border-radius: 50%;
  animation: doc-viewer-spin 0.8s linear infinite;
}

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

.doc-viewer-loading-hint {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* Error State */
.doc-viewer-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 12px;
  padding: 40px;
  text-align: center;
  color: var(--text-secondary, #6b7280);
}

.doc-viewer-error-icon {
  font-size: 3rem;
}

.doc-viewer-error-hint {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* Text File Viewer */
.doc-viewer-text-container {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.doc-viewer-text-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--sidebar-bg, #f8fafc);
  border-bottom: 1px solid var(--border-color, #e5e7eb);
  flex-shrink: 0;
}

.doc-viewer-text-info {
  font-size: 0.8rem;
  color: var(--text-secondary, #6b7280);
}

.doc-viewer-copy-btn {
  padding: 6px 12px;
  background: var(--content-bg, #fff);
  border: 1px solid var(--border-color, #e5e7eb);
  border-radius: 4px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.doc-viewer-copy-btn:hover {
  background: var(--hover-bg, #f3f4f6);
  border-color: var(--primary-color, #667eea);
}

.doc-viewer-text {
  flex: 1;
  margin: 0;
  padding: 16px;
  overflow: auto;
  background: #1e1e1e;
  color: #d4d4d4;
  font-family: 'SF Mono', 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.doc-viewer-text code {
  font-family: inherit;
}

/* Light mode text viewer */
[data-theme="light"] .doc-viewer-text {
  background: #fafafa;
  color: #333;
}

/* Media Containers */
.doc-viewer-media-container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 20px;
  background: #000;
}

.doc-viewer-video {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
}

.doc-viewer-audio-container {
  flex-direction: column;
  gap: 24px;
  background: var(--content-bg, #fff);
}

.doc-viewer-audio-icon {
  font-size: 4rem;
}

.doc-viewer-audio {
  width: 100%;
  max-width: 500px;
}

/* Unsupported File Type */
.doc-viewer-unsupported {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 16px;
  padding: 40px;
  text-align: center;
}

.doc-viewer-unsupported-icon {
  font-size: 4rem;
  opacity: 0.5;
}

.doc-viewer-unsupported h3 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--content-text, #1f2937);
}

.doc-viewer-unsupported p {
  margin: 0;
  color: var(--text-secondary, #6b7280);
}

/* Dark mode adjustments */
[data-theme="dark"] .doc-viewer-container {
  background: var(--content-bg, #1f2937);
}

[data-theme="dark"] .doc-viewer-header {
  background: var(--sidebar-bg, #111827);
  border-color: var(--border-color, #374151);
}

[data-theme="dark"] .doc-viewer-name {
  color: var(--content-text, #f9fafb);
}

[data-theme="dark"] .doc-viewer-action-btn {
  background: var(--content-bg, #1f2937);
  border-color: var(--border-color, #374151);
  color: var(--content-text, #f9fafb);
}

[data-theme="dark"] .doc-viewer-action-btn:hover {
  background: var(--hover-bg, #374151);
}

[data-theme="dark"] .doc-viewer-close-btn:hover {
  background: var(--hover-bg, #374151);
  color: var(--content-text, #f9fafb);
}

[data-theme="dark"] .doc-viewer-frame {
  background: #2d2d2d;
}

[data-theme="dark"] .doc-viewer-text-toolbar {
  background: var(--sidebar-bg, #111827);
  border-color: var(--border-color, #374151);
}

[data-theme="dark"] .doc-viewer-copy-btn {
  background: var(--content-bg, #1f2937);
  border-color: var(--border-color, #374151);
  color: var(--content-text, #f9fafb);
}

[data-theme="dark"] .doc-viewer-copy-btn:hover {
  background: var(--hover-bg, #374151);
}

[data-theme="dark"] .doc-viewer-audio-container {
  background: var(--content-bg, #1f2937);
}

/* Mobile adjustments */
@media (max-width: 640px) {
  .doc-viewer-container {
    width: 100vw;
    height: 100vh;
    max-width: none;
    border-radius: 0;
  }
  
  .doc-viewer-header {
    padding: 10px 12px;
  }
  
  .doc-viewer-name {
    font-size: 0.9rem;
    max-width: 150px;
  }
  
  .doc-viewer-action-btn {
    padding: 8px;
  }
}