/* Organize PDF Tool Styles */
#drop-zone {
  background: var(--bs-light-bg-subtle);
  border: 2px dashed var(--bs-primary);
  transition: background-color 0.3s ease;
}
#drop-zone.dragover {
  background: var(--bs-primary-bg-subtle);
}
.page-card {
  position: relative;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--bs-body-bg);
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  cursor: grab;
  user-select: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.page-card:active,
.sortable-chosen .page-card {
  cursor: grabbing;
}
.sortable-ghost {
  opacity: 0.4;
  outline: 2px dashed var(--bs-primary);
  outline-offset: 2px;
  border-radius: 0.5rem;
}
.sortable-drag .page-card {
  box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.2);
}
.page-preview {
  width: 100%;
  height: auto;
  display: block;
}
.page-card canvas {
  width: 100%;
  height: auto;
  display: block;
}
.page-overlay {
  position: absolute;
  top: 0.9rem;
  right: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  justify-content: flex-end;
  z-index: 25;
}
.page-overlay button {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}
.page-overlay .drag-handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  min-height: 2rem;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.375rem;
  background: var(--bs-body-bg);
  color: var(--bs-secondary-color);
  cursor: grab;
}
.page-overlay .drag-handle:active {
  cursor: grabbing;
}
.page-number {
  position: absolute;
  bottom: 0.25rem;
  left: 0.5rem;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 2px 6px;
  border-radius: 0.25rem;
  font-size: 0.75rem;
}
.page-select {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;

    width: 20px;
    height: 20px;

    transform: scale(1.4);
    transform-origin: top left;

    background: #fff;
    border-radius: 4px;
    padding: 2px;

    cursor: pointer;
    z-index: 20;
}

.preview-modal-content {
  border: 0;
  border-radius: 1rem;
  box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.18);
}

.preview-frame {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.9rem;
  background: linear-gradient(180deg, var(--bs-body-bg), var(--bs-tertiary-bg));
}

.preview-canvas {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 0.75rem 1.75rem rgba(0, 0, 0, 0.14);
}

.preview-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(2px);
  border-radius: 0.9rem;
  z-index: 2;
}

/* ==========================================
   MOBILE-ONLY RESPONSIVE OVERRIDES (≤575px)
   Does NOT affect desktop/tablet layouts.
   ========================================== */
@media (max-width: 575.98px) {
  #pdf-toolbar {
    display: grid !important;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
  }

  #pdf-toolbar .btn-group {
    display: contents;
  }

  #pdf-toolbar button {
    width: 100%;
    min-height: 46px;
    padding: 0.45rem 0.6rem;
    font-size: 0.8rem;
    line-height: 1.1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-radius: 0.375rem !important;
  }

  #pdf-toolbar #select-all {
    grid-column: 1;
    grid-row: 1;
  }

  #pdf-toolbar #deselect-all {
    grid-column: 2;
    grid-row: 1;
  }

  #pdf-toolbar #rotate-left-selected {
    grid-column: 1;
    grid-row: 2;
  }

  #pdf-toolbar #rotate-right-selected {
    grid-column: 2;
    grid-row: 2;
  }

  #pdf-toolbar #delete-selected {
    grid-column: 1;
    grid-row: 3;
  }

  #pdf-toolbar #download-pdf {
    grid-column: 2;
    grid-row: 3;
  }

  #thumbnail-grid {
    row-gap: 0.75rem;
  }

  #thumbnail-grid > [class*="col-"] {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .page-card {
    display: grid;
    grid-template-columns: minmax(1.5rem, auto) minmax(0, 1fr) auto;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
      "select select select"
      "preview preview preview"
      "number toolbar toolbar";
    align-items: start;
    gap: 0.45rem 0.55rem;
    padding: 0.5rem;
    overflow: hidden;
  }

  .page-card canvas,
  .page-card .page-preview {
    grid-area: preview;
    width: 100%;
    height: auto;
    border-radius: 0.35rem;
  }

  .page-card .page-select {
    grid-area: select;
    position: static;
    justify-self: start;
    align-self: start;
    width: 1.15rem;
    height: 1.15rem;
    transform: none;
    margin: 0.1rem 0 0 0.05rem;
    z-index: 2;
  }

  .page-card .page-number {
    grid-area: number;
    position: static;
    justify-self: start;
    align-self: center;
    display: inline-flex;
    align-items: center;
    min-height: 1.5rem;
    margin: 0;
    padding: 0.1rem 0.45rem;
    font-size: 0.7rem;
    line-height: 1;
    z-index: 2;
  }

  .page-card .page-overlay {
    grid-area: toolbar;
    position: static;
    inset: auto;
    right: auto;
    left: auto;
    bottom: auto;
    justify-self: end;
    align-self: center;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, auto));
    align-items: center;
    justify-content: end;
    gap: 0.25rem;
    width: 100%;
    padding: 0;
    background: transparent;
    backdrop-filter: none;
    border-radius: 0;
    z-index: 2;
  }

  .page-card .page-overlay button,
  .page-card .page-overlay .drag-handle {
    width: 2.2rem;
    height: 2.2rem;
    min-width: 2.2rem;
    padding: 0;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.25rem;
  }

  .page-card .page-overlay .drag-handle {
    color: var(--bs-body-color);
    background: var(--bs-tertiary-bg);
    border-color: var(--bs-border-color);
  }

  .page-card .page-overlay .view-page {
    order: 1;
  }

  .page-card .page-overlay .rotate-left {
    order: 2;
  }

  .page-card .page-overlay .rotate-right {
    order: 3;
  }

  .page-card .page-overlay .delete-page {
    order: 4;
  }

  .page-card .page-overlay .drag-handle {
    order: 5;
  }

  .page-card .page-overlay .drag-handle i {
    pointer-events: none;
  }
}