.pdf-merge-layout {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pdf-merge-list-wrap {
  padding: 1rem;
  border-radius: var(--ct-radius);
  background: #f9fafb;
  box-shadow: inset 0 0 0 1px rgba(26, 35, 50, 0.06);
}

.pdf-merge-summary {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.pdf-merge-totals {
  font-size: 0.78rem;
  color: var(--ct-text-muted);
}

.pdf-merge-hint {
  margin: 0 0 0.85rem;
  font-size: 0.8rem;
  color: var(--ct-text-muted);
}

.pdf-merge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(156px, 1fr));
  gap: 0.85rem;
}

.pdf-merge-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  min-width: 0;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 0.75rem;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(26, 35, 50, 0.08);
  cursor: grab;
  user-select: none;
  transition: border-color 0.15s, box-shadow 0.15s, opacity 0.15s, transform 0.15s;
}

.pdf-merge-card:hover {
  box-shadow: inset 0 0 0 1px rgba(42, 171, 152, 0.35), 0 4px 14px rgba(26, 35, 50, 0.06);
}

.pdf-merge-card.is-selected {
  border-color: var(--ct-primary);
  box-shadow: inset 0 0 0 1px rgba(42, 171, 152, 0.2), 0 4px 14px rgba(42, 171, 152, 0.12);
}

.pdf-merge-card.is-dragging {
  opacity: 0.45;
  transform: scale(0.98);
  cursor: grabbing;
}

.pdf-merge-card.is-drag-over {
  border-color: var(--ct-primary);
  box-shadow: inset 0 0 0 2px var(--ct-primary);
}

.pdf-merge-card.is-encrypted {
  box-shadow: inset 0 0 0 1px rgba(224, 82, 82, 0.35);
}

.pdf-merge-card.is-blank .pdf-merge-card-thumb {
  background: repeating-linear-gradient(
    -45deg,
    #f8f9fb,
    #f8f9fb 8px,
    #eef1f4 8px,
    #eef1f4 16px
  );
}

.pdf-merge-card-order {
  position: absolute;
  top: 0.45rem;
  left: 0.45rem;
  z-index: 2;
  min-width: 1.5rem;
  height: 1.5rem;
  padding: 0 0.35rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.4rem;
  background: var(--ct-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
}

.pdf-merge-card-tools {
  position: absolute;
  top: 0.35rem;
  right: 0.35rem;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.2rem;
  max-width: calc(100% - 2.2rem);
}

.pdf-merge-card-move,
.pdf-merge-card-rotate,
.pdf-merge-card-remove {
  width: 1.45rem;
  height: 1.45rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  background: rgba(26, 35, 50, 0.72);
  color: #fff;
  font-size: 0.85rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, background 0.15s;
}

.pdf-merge-card-move:disabled {
  opacity: 0.25 !important;
  cursor: not-allowed;
}

.pdf-merge-card:hover .pdf-merge-card-move,
.pdf-merge-card:hover .pdf-merge-card-rotate,
.pdf-merge-card:hover .pdf-merge-card-remove,
.pdf-merge-card.is-selected .pdf-merge-card-move,
.pdf-merge-card.is-selected .pdf-merge-card-rotate,
.pdf-merge-card.is-selected .pdf-merge-card-remove,
.pdf-merge-card-move:focus-visible,
.pdf-merge-card-rotate:focus-visible,
.pdf-merge-card-remove:focus-visible {
  opacity: 1;
}

.pdf-merge-card-rotate:hover,
.pdf-merge-card-move:hover:not(:disabled) {
  background: var(--ct-primary);
}

.pdf-merge-card-remove:hover {
  background: #e05252;
}

.pdf-merge-card-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 150px;
  max-height: 180px;
  padding: 1.35rem 0.75rem 0.5rem;
  background: linear-gradient(180deg, #f3f5f7 0%, #eef1f4 100%);
  border-radius: 0.65rem 0.65rem 0 0;
  overflow: hidden;
  cursor: zoom-in;
}

.pdf-merge-card-thumb img,
.pdf-merge-card-thumb canvas,
.pdf-merge-card-thumb .pdf-merge-card-fallback {
  max-width: 100%;
  max-height: 140px;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 2px 10px rgba(26, 35, 50, 0.12);
  background: #fff;
  transition: transform 0.2s ease;
  transform-origin: center center;
}

.pdf-merge-card-placeholder {
  width: 1.15rem;
  height: 1.15rem;
  border: 2px solid rgba(42, 171, 152, 0.2);
  border-top-color: var(--ct-primary);
  border-radius: 50%;
  animation: pdf-merge-spin 0.8s linear infinite;
}

.pdf-merge-card-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  color: var(--ct-text-muted);
  font-size: 0.75rem;
  padding: 0.5rem;
}

.pdf-merge-card-fallback-icon {
  font-size: 2rem;
  line-height: 1;
  opacity: 0.7;
}

.pdf-merge-card-meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.55rem 0.65rem 0.7rem;
  min-width: 0;
}

.pdf-merge-card-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ct-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pdf-merge-card-sub {
  font-size: 0.72rem;
  color: var(--ct-text-light);
}

.pdf-merge-card-range {
  font-size: 0.72rem !important;
  padding: 0.2rem 0.4rem !important;
  height: auto !important;
  min-height: 1.6rem;
}

.pdf-merge-unlock-link {
  font-size: 0.72rem;
  color: #c0392b;
  text-decoration: underline;
}

.pdf-merge-add-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 230px;
  border: 1.5px dashed rgba(26, 35, 50, 0.18);
  border-radius: 0.75rem;
  background: #fff;
  color: var(--ct-text-muted);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.pdf-merge-add-card:hover {
  border-color: var(--ct-primary);
  color: var(--ct-primary);
  background: var(--ct-primary-soft);
}

.pdf-merge-add-card-icon {
  font-size: 1.75rem;
  line-height: 1;
  font-weight: 300;
}

.pdf-merge-add-card-text {
  font-size: 0.82rem;
  font-weight: 600;
}

.pdf-merge-action-bar {
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.75rem;
}

.pdf-merge-name-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 180px;
  flex: 1 1 180px;
  max-width: 280px;
}

.pdf-merge-name-field .form-label {
  font-size: 0.8rem;
  color: var(--ct-text-muted);
}

@keyframes pdf-merge-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 576px) {
  .pdf-merge-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.65rem;
  }

  .pdf-merge-card-thumb {
    min-height: 130px;
  }

  .pdf-merge-card-move,
  .pdf-merge-card-rotate,
  .pdf-merge-card-remove {
    opacity: 1;
  }

  .excel-file-list-actions {
    width: 100%;
  }
}