/* ============================================================
   PDF TOOLS — Shared stylesheet
   ============================================================ */

/* Upload zone */
.pdf-upload {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
  border: 2px dashed var(--color-border);
  border-radius: 12px;
  background: var(--color-surface);
  text-align: center;
  cursor: pointer;
  transition: all 200ms ease;
  margin-bottom: 1.5rem;
}
.pdf-upload:hover, .pdf-upload.dragover {
  border-color: var(--color-primary);
  background: rgba(14, 165, 233, 0.04);
}
.pdf-upload-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(239, 68, 68, 0.05));
  color: #ef4444;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.pdf-upload-icon svg { width: 28px; height: 28px; }
.pdf-upload h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}
.pdf-upload p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.pdf-upload input[type="file"] { display: none; }
.pdf-upload-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 150ms ease;
}
.pdf-upload-btn:hover { background: var(--color-primary-hover); }

/* File list */
.pdf-file-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.pdf-file-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: all 150ms ease;
}
.pdf-file-item:hover { border-color: var(--color-primary); }
.pdf-file-thumb {
  width: 40px;
  height: 48px;
  border-radius: 4px;
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  position: relative;
  overflow: hidden;
}
.pdf-file-thumb::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 8px;
  height: 8px;
  background: rgba(255,255,255,0.4);
  clip-path: polygon(0 0, 100% 100%, 100% 0);
}
.pdf-file-info { flex: 1; min-width: 0; }
.pdf-file-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pdf-file-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.pdf-file-actions {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  flex-shrink: 0;
}
.pdf-file-handle {
  cursor: grab;
  color: var(--color-text-subtle);
  padding: 0.25rem;
  display: flex;
  align-items: center;
  user-select: none;
}
.pdf-file-handle:active { cursor: grabbing; }
.pdf-file-handle:hover { color: var(--color-text); }
.pdf-file-remove {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--color-text-muted);
  border: none;
  cursor: pointer;
  transition: all 150ms ease;
}
.pdf-file-remove:hover { background: #fee2e2; color: #ef4444; }

/* Sortable list */
.pdf-file-item.sortable-ghost {
  opacity: 0.4;
  background: rgba(14, 165, 233, 0.1);
}
.pdf-file-item.sortable-chosen { border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.2); }

/* Options panel */
.pdf-options {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}
.pdf-options-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.pdf-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}
.pdf-option {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.pdf-option-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pdf-option input[type="text"],
.pdf-option input[type="number"],
.pdf-option select,
.pdf-option textarea {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  width: 100%;
  transition: border-color 150ms ease;
}
.pdf-option input:focus,
.pdf-option select:focus,
.pdf-option textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}
.pdf-option-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}
.pdf-option-row label {
  font-size: 0.85rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
}
.pdf-option-row input[type="radio"],
.pdf-option-row input[type="checkbox"] {
  cursor: pointer;
  accent-color: var(--color-primary);
}

/* Buttons */
.pdf-actions {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.pdf-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 150ms ease;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-sans);
}
.pdf-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}
.pdf-btn--primary {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #fff;
  border: none;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.25);
}
.pdf-btn--primary:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.35);
  transform: translateY(-1px);
}
.pdf-btn--success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  border: none;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}
.pdf-btn--success:hover {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  color: #fff;
  transform: translateY(-1px);
}
.pdf-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Result area */
.pdf-result {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  display: none;
}
.pdf-result.show { display: block; }
.pdf-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}
.pdf-result-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.pdf-result-title svg { color: #10b981; }
.pdf-result-stats {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.pdf-result-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Preview grid */
.pdf-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.pdf-preview-item {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  padding: 0.5rem;
  cursor: pointer;
  transition: all 150ms ease;
}
.pdf-preview-item:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.pdf-preview-thumb {
  width: 100%;
  aspect-ratio: 0.75;
  border-radius: 4px;
  background: #fff;
  margin-bottom: 0.5rem;
  display: block;
  object-fit: contain;
}
.pdf-preview-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.pdf-preview-page-num {
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-mono);
}
.pdf-preview-actions {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity 150ms ease;
}
.pdf-preview-item:hover .pdf-preview-actions { opacity: 1; }
.pdf-preview-action {
  width: 26px;
  height: 26px;
  border-radius: 5px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  transition: background 150ms ease;
}
.pdf-preview-action:hover { background: var(--color-primary); }
.pdf-preview-check {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  width: 24px;
  height: 24px;
  border-radius: 5px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  display: none;
}
.pdf-preview-item.selected .pdf-preview-check { display: flex; }
.pdf-preview-item.selected { border-color: var(--color-primary); background: rgba(14, 165, 233, 0.05); }

/* Stats bar */
.pdf-stats {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  flex-wrap: wrap;
}
.pdf-stat {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text-muted);
}
.pdf-stat-value {
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-mono);
}
.pdf-stat--highlight .pdf-stat-value { color: #10b981; }
.pdf-stat--warning .pdf-stat-value { color: #f59e0b; }

/* Progress bar */
.pdf-progress {
  width: 100%;
  height: 8px;
  background: var(--color-bg);
  border-radius: 4px;
  overflow: hidden;
  margin: 1rem 0;
  display: none;
}
.pdf-progress.show { display: block; }
.pdf-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #ef4444 0%, #f59e0b 50%, #10b981 100%);
  width: 0%;
  transition: width 200ms ease;
}
.pdf-progress-text {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
  font-family: var(--font-mono);
}

/* Output gallery */
.pdf-output-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.pdf-output-item {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  overflow: hidden;
  transition: all 150ms ease;
}
.pdf-output-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.pdf-output-img {
  width: 100%;
  aspect-ratio: 0.75;
  object-fit: cover;
  display: block;
  background: #fff;
}
.pdf-output-info {
  padding: 0.5rem 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.pdf-output-dl {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  font-size: 0.7rem;
  color: var(--color-text);
  cursor: pointer;
  font-family: var(--font-sans);
}
.pdf-output-dl:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* HTML editor */
.html-editor {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 768px) { .html-editor { grid-template-columns: 1fr; } }
.html-editor-pane {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.html-editor-textarea {
  min-height: 360px;
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  resize: vertical;
  outline: none;
  line-height: 1.6;
}
.html-editor-textarea:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1); }
.html-editor-preview {
  min-height: 360px;
  padding: 1rem;
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  overflow: auto;
  color: #000;
}
.html-editor-preview h1 { font-size: 1.5rem; margin: 0 0 0.5rem; }
.html-editor-preview h2 { font-size: 1.25rem; margin: 1rem 0 0.5rem; }
.html-editor-preview h3 { font-size: 1.125rem; margin: 0.75rem 0 0.5rem; }
.html-editor-preview p { margin: 0.5rem 0; }
.html-editor-preview ul, .html-editor-preview ol { margin: 0.5rem 0 0.5rem 1.5rem; }
.html-editor-preview code { background: #f3f4f6; padding: 0.1rem 0.3rem; border-radius: 3px; font-family: monospace; }
.html-editor-preview pre { background: #f3f4f6; padding: 0.75rem; border-radius: 4px; overflow-x: auto; }
.html-editor-preview a { color: #2563eb; }

/* Image list (for image-to-pdf) */
.pdf-image-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.pdf-image-item {
  position: relative;
  aspect-ratio: 1;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--color-bg);
  cursor: grab;
  transition: all 150ms ease;
}
.pdf-image-item:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.pdf-image-item.sortable-ghost { opacity: 0.4; }
.pdf-image-item.sortable-chosen { border-color: var(--color-primary); }
.pdf-image-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.pdf-image-remove {
  position: absolute;
  top: 0.25rem;
  right: 0.25rem;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0,0,0,0.7);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}
.pdf-image-remove:hover { background: #ef4444; }
.pdf-image-num {
  position: absolute;
  top: 0.25rem;
  left: 0.25rem;
  background: rgba(0,0,0,0.7);
  color: #fff;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

/* Watermark preview */
.watermark-preview {
  background: #f3f4f6;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  margin-top: 1rem;
}
.watermark-preview-text {
  font-size: 3rem;
  font-weight: 700;
  color: rgba(0, 0, 0, 0.15);
  transform: rotate(-30deg);
  white-space: nowrap;
  user-select: none;
}

/* Empty state */
.pdf-empty {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--color-text-muted);
}
.pdf-empty svg { width: 64px; height: 64px; opacity: 0.3; margin-bottom: 1rem; }
.pdf-empty h3 { font-size: 1.125rem; color: var(--color-text); margin-bottom: 0.5rem; }
.pdf-empty p { font-size: 0.9rem; }

/* Dark mode */
[data-theme="dark"] .pdf-upload {
  background: var(--color-surface);
  border-color: var(--color-border);
}
[data-theme="dark"] .pdf-upload:hover,
[data-theme="dark"] .pdf-upload.dragover {
  background: rgba(14, 165, 233, 0.08);
}
[data-theme="dark"] .pdf-file-thumb { background: linear-gradient(135deg, #b91c1c 0%, #7f1d1d 100%); }
[data-theme="dark"] .html-editor-preview { background: #f3f4f6; color: #000; }

/* Responsive */
@media (max-width: 768px) {
  .pdf-upload { padding: 2rem 1rem; }
  .pdf-options { padding: 1rem; }
  .pdf-options-grid { grid-template-columns: 1fr; }
  .pdf-result { padding: 1rem; }
  .pdf-preview-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .pdf-output-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .pdf-actions { flex-direction: column; }
  .pdf-actions .pdf-btn { width: 100%; justify-content: center; }
  .pdf-actions .pdf-btn--primary { order: -1; }
}