/* ── Page Thumbnail Grid ─────────────────────── */
.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.page-thumb {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  transition: all 200ms;
  position: relative;
}

.page-thumb:hover {
  border-color: #93c5fd;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.page-thumb.selected {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(242, 0, 0, 0.15);
}

.page-thumb-img-wrap {
  position: relative;
  background: #fff;
  overflow: hidden;
}

.page-thumb-img {
  width: 100%;
  aspect-ratio: 0.707;
  object-fit: contain;
  display: block;
  background: #fff;
}

.page-thumb-label {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 6px 4px;
  background: var(--color-bg);
}

.page-thumb.selected .page-thumb-label {
  background: var(--color-brand);
  color: #fff;
}

.page-thumb .page-check {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 200ms;
  z-index: 2;
}

.page-thumb .page-check svg {
  stroke: transparent;
  transition: stroke 200ms;
}

.page-thumb.selected .page-check {
  background: var(--color-brand);
  border-color: var(--color-brand);
}

.page-thumb.selected .page-check svg {
  stroke: #fff;
}

/* ── Drag hint on reorder thumbs ─────────────── */
.page-thumb-drag-hint {
  position: absolute;
  top: 6px;
  left: 6px;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 200ms;
  z-index: 2;
}

.page-thumb-drag-hint svg {
  stroke: #fff;
}

.page-thumb:hover .page-thumb-drag-hint {
  opacity: 1;
}

/* ── Rotation controls on thumbnails ─────────── */
.page-thumb-actions {
  position: absolute;
  bottom: 28px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 4px;
  opacity: 0;
  transition: opacity 200ms;
  z-index: 2;
}

.page-thumb:hover .page-thumb-actions {
  opacity: 1;
}

.page-thumb-actions button {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.page-thumb-actions button:hover {
  background: rgba(0,0,0,0.8);
}

/* ── Drag reorder for page thumbs ─────────────── */
.page-thumb.dragging {
  opacity: 0.4;
  border-style: dashed;
}

.page-thumb.drag-target {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59,130,246,0.2);
}

/* ── Selection counter ────────────────────────── */
.page-select-counter {
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 8px 0 4px;
}

/* ── Loading state ────────────────────────────── */
.page-view-loading {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-muted);
  padding: 16px 0;
}

/* ── Canvas Mode ──────────────────────────────── */
.canvas-mode-container {
  margin: 20px 0;
}

.canvas-page-strip {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 4px;
  margin-bottom: 16px;
  -webkit-overflow-scrolling: touch;
}

.canvas-strip-thumb {
  min-width: 56px;
  max-width: 56px;
  flex-shrink: 0;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  transition: all 200ms;
  text-align: center;
}

.canvas-strip-thumb img {
  width: 100%;
  aspect-ratio: 0.707;
  object-fit: contain;
  display: block;
  background: #fff;
}

.canvas-strip-thumb span {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 2px 0;
  background: var(--color-bg);
}

.canvas-strip-thumb:hover {
  border-color: #93c5fd;
}

.canvas-strip-thumb.active {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 2px rgba(242, 0, 0, 0.15);
}

.canvas-strip-thumb.active span {
  background: var(--color-brand);
  color: #fff;
}

.canvas-workspace {
  position: relative;
  background: #e2e8f0;
  border-radius: var(--radius-md);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 20px;
  min-height: 400px;
  overflow: hidden;
}

.canvas-page-wrapper {
  position: relative;
  display: inline-block;
}

.canvas-workspace canvas {
  max-width: 100%;
  height: auto;
  box-shadow: 0 2px 16px rgba(0,0,0,0.15);
  background: #fff;
  display: block;
}

.canvas-overlay {
  position: absolute;
  top: 0;
  left: 0;
  cursor: crosshair;
  z-index: 5;
}

.canvas-instructions {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 12px 0;
  font-style: italic;
}

/* ── Canvas annotation markers ────────────────── */
.canvas-click-marker {
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--color-brand);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  box-shadow: 0 0 0 3px rgba(242, 0, 0, 0.25), 0 2px 4px rgba(0,0,0,0.2);
  z-index: 6;
}

.canvas-annotation-marker {
  position: absolute;
  background: rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(242, 0, 0, 0.7);
  pointer-events: none;
  z-index: 6;
}

.canvas-rect-preview {
  position: absolute;
  background: rgba(0, 0, 0, 0.3);
  border: 2px dashed var(--color-brand);
  pointer-events: none;
  z-index: 7;
}

.canvas-ann-remove {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-brand);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: bold;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 8;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.canvas-ann-remove:hover {
  background: var(--color-brand-dark);
}

/* ── Preview mode (non-interactive) ──────────── */
.page-grid-preview .page-thumb {
  cursor: default;
}

.page-grid-preview .page-thumb:hover {
  border-color: var(--color-border);
  transform: none;
  box-shadow: none;
}

/* Allow hover actions to still show on preview thumbs */
.page-grid-preview .page-thumb:hover .page-thumb-actions {
  opacity: 1;
}

.page-thumb-img-wrap img.rotated-90 {
  transform: rotate(90deg);
}
.page-thumb-img-wrap img.rotated-180 {
  transform: rotate(180deg);
}
.page-thumb-img-wrap img.rotated-270 {
  transform: rotate(270deg);
}

.page-thumb-rotation-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  background: var(--color-brand);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  z-index: 2;
  pointer-events: none;
}

/* ── Live Preview Canvas Overlay ─────────────── */
.page-preview-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* ── Range Select (in-range highlight) ───────── */
.page-thumb.in-range {
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59,130,246,0.2);
}

.page-thumb.in-range .page-thumb-label {
  background: #3b82f6;
  color: #fff;
}

/* ── Range Panel ─────────────────────────────── */
.page-range-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 4px 0 16px;
}

.page-range-panel-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
}

.page-range-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
  min-height: 28px;
  align-items: center;
}

.page-range-hint {
  font-size: 13px;
  color: var(--color-text-muted);
}

.page-range-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 12px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: #1e40af;
}

.page-range-pill button {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: transparent;
  color: #6b7280;
  border: none;
  cursor: pointer;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
}

.page-range-pill button:hover {
  background: var(--color-brand);
  color: #fff;
}

.page-range-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-range-input {
  width: 72px;
  padding: 7px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  text-align: center;
  background: var(--color-bg);
  color: var(--color-text);
}

.page-range-input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59,130,246,0.15);
}

.page-range-dash {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 16px;
}

.page-range-add-btn {
  padding: 7px 18px;
  background: var(--color-brand);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 150ms;
}

.page-range-add-btn:hover {
  opacity: 0.9;
}

.page-range-quick {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.page-range-quick button {
  padding: 5px 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all 150ms;
}

.page-range-quick button:hover {
  border-color: #3b82f6;
  color: #3b82f6;
}

/* ── Merge File Cards ────────────────────────── */
.merge-file-counter {
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 8px 0 4px;
}

.merge-file-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
  margin: 12px 0 16px;
}

.merge-file-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: grab;
  transition: all 200ms;
  position: relative;
}

.merge-file-card:hover {
  border-color: #93c5fd;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.merge-file-card.dragging {
  opacity: 0.4;
  border-style: dashed;
  cursor: grabbing;
}

.merge-file-card.drag-over {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59,130,246,0.2);
}

.merge-card-order {
  position: absolute;
  top: 6px;
  left: 6px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-brand);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.merge-card-thumb {
  width: 100%;
  aspect-ratio: 0.707;
  object-fit: contain;
  display: block;
  background: #fff;
}

.merge-card-thumb-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.merge-card-thumb-placeholder svg {
  width: 48px;
  height: 48px;
}

.merge-card-info {
  padding: 8px;
  background: var(--color-bg);
}

.merge-card-name {
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--color-text);
}

.merge-card-meta {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.merge-card-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 200ms;
  z-index: 2;
}

.merge-file-card:hover .merge-card-remove {
  opacity: 1;
}

.merge-card-remove:hover {
  background: var(--color-brand);
}

/* ── Result Preview ─────────────────────────────── */
.result-preview-area {
  margin: 20px 0;
}

.result-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.result-preview-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
}

.result-preview-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-bg);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.result-preview-loading {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  padding: 10px 0 4px;
}

.result-preview-grid {
  gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
}

.result-preview-grid .page-thumb {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* ── Wider tool page for canvas tools ─────────── */
.tool-page-wide {
  max-width: 900px;
}