/* ============================================================
   UtilityGet - Shared PDF-tool UI styles
   Used by every page in the Document Tools hub (pdf-merger,
   image-to-pdf, pdf-compressor, pdf-to-jpg, pdf-watermark,
   sign-pdf). Mirrors the original inline block from pdf-merger.
   ============================================================ */

/* ---- Mode tabs ---- */
.pdf-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.75rem;
}

.pdf-tab {
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
  min-height: 44px;
}

.pdf-tab:hover { color: var(--text); }

.pdf-tab[aria-selected="true"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---- Mode panels ---- */
.pdf-panel { display: none; }
.pdf-panel.active { display: block; }

/* ---- Drop zone ---- */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: var(--bg-secondary);
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-light);
}

.drop-zone-file-input {
  display: none !important;
}

.drop-zone-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
  display: block;
}

.drop-zone-title {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.375rem;
}

.drop-zone-sub {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ---- File list ---- */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-top: 1.25rem;
}

.file-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  cursor: default;
  transition: box-shadow var(--transition), border-color var(--transition), opacity var(--transition);
  user-select: none;
}

.file-card[draggable="true"] { cursor: grab; }
.file-card.dragging { opacity: 0.4; }
.file-card.drag-target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }

.file-card-grip {
  color: var(--text-muted);
  font-size: 1rem;
  cursor: grab;
  flex-shrink: 0;
  touch-action: none;
}

.file-card-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.file-card-info {
  flex: 1;
  min-width: 0;
}

.file-card-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-card-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.125rem;
}

.file-card-reorder {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

@media (min-width: 640px) {
  .file-card-reorder { display: none; }
}

.reorder-btn {
  width: 28px;
  height: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition);
}

.reorder-btn:hover { background: var(--bg-tertiary); }
.reorder-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.file-card-remove {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-muted);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.file-card-remove:hover {
  background: #fee2e2;
  color: #b91c1c;
  border-color: #fca5a5;
}

[data-theme="dark"] .file-card-remove:hover {
  background: #450a0a;
  color: #f87171;
  border-color: #7f1d1d;
}

/* ---- Merge / action controls ---- */
.merge-controls {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.merge-stats {
  font-size: 0.875rem;
  color: var(--text-muted);
  flex: 1;
}

/* ---- Progress bar ---- */
.pdf-progress {
  display: none;
  margin-top: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
}

.pdf-progress.visible { display: block; }

.pdf-progress-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.pdf-progress-bar-track {
  background: var(--bg-tertiary);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}

.pdf-progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  width: 0%;
  transition: width 0.3s ease;
}

/* ---- Result message ---- */
.pdf-result {
  display: none;
  margin-top: 1rem;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
}

.pdf-result.visible { display: flex; align-items: center; gap: 0.625rem; }

.pdf-result-success {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

[data-theme="dark"] .pdf-result-success {
  background: #14532d;
  color: #86efac;
  border-color: #166534;
}

.pdf-result-error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

[data-theme="dark"] .pdf-result-error {
  background: #450a0a;
  color: #fca5a5;
  border-color: #7f1d1d;
}

/* ---- Warning callout (pdf-compressor "size grew" etc.) ---- */
.pdf-warning {
  display: none;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: #fef3c7;
  color: #854d0e;
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
}

.pdf-warning.visible { display: block; }

[data-theme="dark"] .pdf-warning {
  background: #422006;
  color: #fde68a;
  border-color: #713f12;
}

/* ---- Single-file info panel ---- */
.split-file-info {
  display: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-top: 1.25rem;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.split-file-info.visible { display: flex; }

.split-file-info-icon { font-size: 2rem; }

.split-file-info-text .sfi-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
}

.split-file-info-text .sfi-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.125rem;
}

/* ---- Page grid (split/jpg/sign etc.) ---- */
.page-grid-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.page-grid-header h2,
.page-grid-header h3 {
  font-size: 1rem;
  flex: 1;
}

.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 0.625rem;
  max-height: 340px;
  overflow-y: auto;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  list-style: none;
  margin: 0;
}

.page-thumb {
  aspect-ratio: 3/4;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-secondary);
  position: relative;
  transition: border-color var(--transition), background var(--transition);
  user-select: none;
  overflow: hidden;
}

[data-theme="dark"] .page-thumb {
  background: var(--bg-tertiary);
}

.page-thumb:hover { border-color: var(--accent); }

.page-thumb.selected {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
}

.page-thumb canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.page-thumb-check {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.page-thumb.selected .page-thumb-check { display: flex; }

.page-thumb-num {
  font-size: 0.75rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
  padding: 0 4px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 4px;
}

[data-theme="dark"] .page-thumb-num {
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
}

/* ---- Range input row ---- */
.range-row {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.range-row input {
  flex: 1;
  min-width: 160px;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-size: 0.9375rem;
}

/* ---- Split/action controls ---- */
.split-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

/* ---- Error message ---- */
.pdf-error {
  display: none;
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
}

[data-theme="dark"] .pdf-error {
  background: #450a0a;
  color: #fca5a5;
  border-color: #7f1d1d;
}

.pdf-error.visible { display: block; }