/* Files styles */
/* ====================================
 * 6. APPLICATION-SPECIFIC COMPONENTS
 * Components unique to PDFMERGE
 * ==================================== */

/* Drop Area */
#drop-area {
  margin: 0;
  border: 1px dashed var(--border-color-drop-area);
  border-radius: var(--radius-panel);
  padding: 2.5rem 1.25rem;
  text-align: center;
  color: var(--font-color-drop-area);
  position: relative;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  background: linear-gradient(180deg, var(--drop-tint), transparent 45%), var(--surface2-color);
}

#drop-area:hover {
  border-color: var(--focus-color);
  background: linear-gradient(180deg, var(--drop-tint-hover), transparent 45%), var(--surface2-color);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-blue-1) 10%, transparent);
}

#drop-area .drop-icon,
#drop-area > p {
  position: relative;
  z-index: 0;
  pointer-events: none;
}

#drop-area.has-files .drop-icon,
#drop-area.has-files > p {
  opacity: 0.2;
  transition: opacity var(--transition-normal);
}

#drop-area.drag .drop-icon,
#drop-area.drag > p {
  opacity: 0.3;
}

.drop-icon {
  font-size: 40px;
  display: block;
  margin: 0 auto 1rem;
  color: var(--color-blue-text);
}

/* File List Container */
#file-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
  width: 100%;
}

.sort-files-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.sort-files-control select {
  width: auto;
}

#drop-area:not(.has-files) .sort-files-control {
  display: none;
}

/* File List - Modern CSS Grid Layout */
#selected-files-list {
  margin: 0;
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: fit-content;
  box-sizing: border-box;
  justify-items: center;
  place-content: start center;
}

/* File Cards with Drag and Drop */
#selected-files-list li {
  background-color: var(--bg-color-filelist);
  color: var(--font-color-filelist);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
  gap: 6px;
  padding: 14px 14px 16px;
  border: 1px solid var(--card-shell-border);
  border-radius: var(--radius-panel);
  box-sizing: border-box;
  width: 100%;
  max-width: 400px;
  min-height: 200px;
  position: relative;
  box-shadow: 0 18px 40px color-mix(in srgb, var(--color-ink) 8%, transparent);
  transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
  pointer-events: auto;
  transform-origin: center;
  cursor: grab;
  user-select: none;
  overflow: hidden;
}

.card-thumbnail-wrapper {
    width: 100%;
    height: 196px;
    overflow: hidden;
    background: var(--card-preview-stage-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    padding: 16px;
}

.card-thumbnail-wrapper--pdf {
    height: 196px;
}

.card-thumbnail-frame {
    width: 100%;
    height: 100%;
    max-width: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s ease;
}

.card-thumbnail-page {
    width: 82%;
    height: 82%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-thumbnail-surface {
    height: 100%;
    width: auto;
    aspect-ratio: 210 / 297;
    border-radius: 0;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card-preview-frame-bg);
    padding: 0;
    box-sizing: border-box;
    box-shadow: 0 12px 30px color-mix(in srgb, var(--color-black) 8%, transparent);
    transform-origin: center center;
    transform: rotate(var(--thumbnail-rotation, 0deg)) scale(var(--thumbnail-page-scale, 1));
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease;
}

.card-thumbnail-content {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: rotate(var(--thumbnail-image-rotation, 0deg)) scale(var(--thumbnail-image-scale, 1));
    transform-origin: center center;
    transition: transform 0.25s ease;
}

.card-thumbnail-content--image {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(var(--thumbnail-image-rotation, 0deg)) scale(var(--thumbnail-image-scale, 1));
}

.card-thumbnail-surface--pdf {
    padding: 0;
}

.card-thumbnail-content--pdf {
    transform: rotate(var(--thumbnail-pdf-content-rotation, 0deg));
}

.card-thumbnail-content--pdf[data-pdf-rotation-mode="sideways"] {
    position: absolute;
    width: 141.43%;
    height: 70.71%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(var(--thumbnail-pdf-content-rotation, 0deg));
    transform-origin: center center;
}

.card-thumbnail--pdf {
    width: 100%;
    height: 100%;
}

.card-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

#selected-files-list li[data-image-layout="cover"] .card-thumbnail-surface {
  padding: 0;
}

#selected-files-list li[data-image-layout="cover"] .card-thumbnail-content {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#selected-files-list li[data-image-layout="cover"] .card-thumbnail {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

#selected-files-list li[data-image-layout="cover-rotated"] .card-thumbnail-surface {
  padding: 0;
  background: var(--card-preview-frame-bg);
}

#selected-files-list li[data-image-layout="cover-rotated"] .card-thumbnail-content {
  position: absolute;
  width: 141.43%;
  height: 70.71%;
  top: 50%;
  left: 50%;
  overflow: hidden;
  transform: translate(-50%, -50%) rotate(var(--thumbnail-image-rotation, 90deg)) scale(var(--thumbnail-image-scale, 1));
  transform-origin: center center;
}

#selected-files-list li[data-image-layout="cover-rotated"] .card-thumbnail {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

#selected-files-list li[data-image-layout="fit"] .card-thumbnail-surface {
  padding: 0;
}

#selected-files-list li[data-image-layout="fit"] .card-thumbnail-content {
  width: 100%;
  height: 100%;
}

#selected-files-list li[data-image-layout="fit"] .card-thumbnail {
  object-fit: contain;
  background: var(--card-preview-frame-bg);
}

#selected-files-list li[data-image-layout="default"] .card-thumbnail-surface {
  padding: 0;
  background: var(--card-preview-frame-bg);
}

#selected-files-list li[data-image-layout="default"] .card-thumbnail-content {
  width: 84%;
  height: 84%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(var(--thumbnail-image-rotation, 0deg)) scale(var(--thumbnail-image-scale, 1));
}

#selected-files-list li[data-image-layout="default"] .card-thumbnail {
  object-fit: contain;
  background: var(--card-preview-frame-bg);
}

/* fit-rotated: image rotated 90° placed on a portrait page.
   The img is absolutely positioned with swapped dimensions (landscape box = page height × page width)
   then rotated 90° so it maps exactly onto the portrait page area. object-fit: contain then
   scales the image so its longer side fills the corresponding page dimension, matching the
   non-rotated "fit" behaviour (longer side always touches). */
#selected-files-list li[data-image-layout="fit-rotated"] .card-thumbnail-surface {
  height: 100%;
  width: auto;
  padding: 0;
  background: var(--card-preview-frame-bg);
}

#selected-files-list li[data-image-layout="fit-rotated"] .card-thumbnail-content {
  position: absolute;
  width: 141.43%;
  height: 70.71%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(var(--thumbnail-image-rotation, 90deg)) scale(var(--thumbnail-image-scale, 1));
  transform-origin: center center;
}

#selected-files-list li[data-image-layout="fit-rotated"] .card-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--card-preview-frame-bg);
}

/* default-rotated: same as fit-rotated but scaled to 84% so ~8% margin shows on each side,
   matching the visual framing of the default-margins layout. */
#selected-files-list li[data-image-layout="default-rotated"] .card-thumbnail-surface {
  height: 100%;
  width: auto;
  padding: 0;
  background: var(--card-preview-frame-bg);
}

#selected-files-list li[data-image-layout="default-rotated"] .card-thumbnail-content {
  position: absolute;
  width: 118.8%;
  height: 59.4%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(var(--thumbnail-image-rotation, 90deg)) scale(var(--thumbnail-image-scale, 1));
  transform-origin: center center;
}

#selected-files-list li[data-image-layout="default-rotated"] .card-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--card-preview-frame-bg);
}

/* Enhanced dragging state */
#selected-files-list li.dragging,
#selected-files-list li.is-dragging {
  opacity: 0.9;
  z-index: 1000;
  cursor: grabbing;
  box-shadow: 0 15px 40px color-mix(in srgb, var(--color-black) 30%, transparent);
  transition: none;
  border-color: var(--focus-color);
}

/* When the card is reparented to document.body during drag, all
   #selected-files-list li rules stop matching. Repeat the critical
   visual properties here so the ghost card still looks like a card. */
li.is-dragging {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
  gap: 6px;
  padding: 14px 14px 16px;
  border: 1px solid var(--color-blue-1);
  border-radius: var(--radius-panel);
  box-sizing: border-box;
  background-color: var(--bg-color-filelist);
  color: var(--font-color-filelist);
  overflow: hidden;
  user-select: none;
  opacity: 0.9;
  z-index: 1000;
  cursor: grabbing;
  box-shadow: 0 15px 40px color-mix(in srgb, var(--color-black) 30%, transparent);
  transition: none;
}

.drag-placeholder {
  border: 2px dashed var(--focus-color);
  background: linear-gradient(135deg, color-mix(in srgb, var(--color-blue-1) 8%, transparent), color-mix(in srgb, var(--color-blue-1) 3%, transparent));
  border-radius: var(--radius-panel);
  box-sizing: border-box;
  pointer-events: none;
}

/* Card hover effects */
#selected-files-list li:not(.dragging) {
  cursor: grab;
}

#selected-files-list li:not(.dragging):hover {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Smooth transitions for reordering */
#selected-files-list li {
  transition: transform 0.3s cubic-bezier(0.2, 0, 0.2, 1), opacity 0.3s ease, box-shadow 0.3s ease;
}

/* Click to reorder animation */
#selected-files-list li.reordering {
  animation: reorderPulse 0.4s ease;
}

@keyframes reorderPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); box-shadow: 0 8px 25px color-mix(in srgb, var(--color-blue-1) 40%, transparent); }
  100% { transform: scale(1); }
}

/* Card explosion animation styles */
.card-exploding {
  pointer-events: none;
  position: relative;
  z-index: 1;
}

/* Subtle pre-explosion effect */
@keyframes preExplode {
  0% { 
    transform: scale(1);
    filter: brightness(1);
  }
  50% {
    transform: scale(1.02);
    filter: brightness(1.1);
  }
  100% { 
    transform: scale(1.01);
    filter: brightness(1.05);
  }
}

.card-pre-explode {
  animation: preExplode 0.2s ease-in-out;
}

#selected-files-list li:hover::after {
  opacity: 1;
}

/* View Transition API styles */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.8s;
  animation-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* All card transitions - matches any view-transition-name starting with 'card-' */
::view-transition-group(*) {
  animation-duration: 0.8s;
  animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);
}

::view-transition-old(*),
::view-transition-new(*) {
  animation-duration: 0.8s;
  animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);
}

#selected-files-list li:hover {
  box-shadow: 0 8px 25px color-mix(in srgb, var(--color-black) 10%, transparent);
  transform: translateY(-3px);
  border-color: var(--focus-color);
}

#selected-files-list li:active {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-black) 8%, transparent);
  border-color: var(--focus-color);
}

[data-theme="dark"] #selected-files-list li {
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--color-white) 1.8%, transparent), color-mix(in srgb, var(--color-black) 4%, transparent)),
    var(--bg-color-filelist);
  border-color: var(--card-shell-border);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--color-white) 4%, transparent),
    0 16px 34px color-mix(in srgb, var(--color-black) 26%, transparent);
}

[data-theme="dark"] #selected-files-list li:hover {
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--color-white) 5%, transparent),
    0 20px 42px color-mix(in srgb, var(--color-black) 34%, transparent);
  border-color: color-mix(in srgb, var(--color-blue-1) 18%, transparent);
}

[data-theme="dark"] .card-thumbnail-wrapper {
  background:
    radial-gradient(circle at top, color-mix(in srgb, var(--color-blue-1) 6%, transparent), transparent 42%),
    var(--card-preview-stage-bg);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-white) 3.5%, transparent);
}

[data-theme="dark"] .card-thumbnail-surface {
  box-shadow:
    0 14px 30px color-mix(in srgb, var(--color-black) 24%, transparent),
    0 0 0 1px color-mix(in srgb, var(--color-ink) 6%, transparent);
}

[data-theme="dark"] .delete-file-button {
  color: var(--color-dark-card-muted);
}

[data-theme="dark"] .image-layout-card-select {
  background-color: var(--color-dark-card-bg);
  color: var(--font-color);
}

/* File Card Components */
.file-info-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 6px;
  min-width: 0;
  overflow: hidden;
  word-wrap: break-word;
  overflow-wrap: break-word;
  height: 100%;
  justify-content: flex-start;
  padding: 0;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.card-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
}

.card-meta-top-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Order Number Badge */
.order-number {
  color: var(--font-color-2);
  padding: 0;
  font-size: 0.98rem;
  font-weight: 800;
  min-width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 1;
  box-shadow: none;
  border: none;
  order: -1;
  cursor: pointer;
}

/* Reset the shared button look: the order number is a compact text button. */
button.order-number,
button.order-number:hover,
button.order-number:active {
  margin: 0;
  background: none;
  color: var(--font-color-2);
  font-family: inherit;
  border-radius: var(--radius-control);
  box-shadow: none;
  transform: none;
}

button.order-number:hover {
  background: var(--accent-dim);
}

.file-type-badge {
  background-color: var(--color-gray-5);
  color: var(--color-white);
  padding: 5px 10px;
  border-radius: var(--radius-control);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}

.file-type-badge.pdf {
  background-color: var(--color-red-1);
}

.file-type-badge.image {
  background-color: var(--color-green-1);
}

.file-type-badge.blank {
  background-color: var(--color-gray-5);
}

.orientation-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 4px 10px 4px 9px;
  border-radius: var(--radius-control);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  border: 1px solid var(--card-action-border);
  background: var(--orientation-neutral-bg);
  color: inherit;
  flex-shrink: 0;
}

.orientation-badge::before {
  content: "";
  display: inline-block;
  border: 1.5px solid currentColor;
  border-radius: var(--radius-control);
  opacity: 0.85;
}

.orientation-badge--portrait::before {
  width: 10px;
  height: 14px;
}

.orientation-badge--landscape::before {
  width: 14px;
  height: 10px;
}

.orientation-badge--square::before,
.orientation-badge--unknown::before {
  width: 12px;
  height: 12px;
}

.orientation-badge--portrait {
  background: var(--orientation-portrait-bg);
  color: var(--orientation-portrait-color);
}

.orientation-badge--landscape {
  background: var(--orientation-landscape-bg);
  color: var(--orientation-landscape-color);
}

.orientation-badge--square,
.orientation-badge--unknown {
  background: var(--orientation-neutral-bg);
  color: var(--orientation-neutral-color);
}

.card-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  text-align: center;
}

.card-top-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 0 4px;
  flex-shrink: 0;
}

.file-name {
  font-weight: 600;
  color: inherit;
  font-size: 0.95rem;
  display: -webkit-box;
  line-height: 1.3;
  margin: 0;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  max-width: 100%;
  max-height: 2.6rem;
}

.file-size,
.file-pages {
  font-size: 0.75rem;
  color: var(--font-color-2);
  font-weight: 500;
  white-space: nowrap;
  line-height: 1.4;
}

.pdf-page-range-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 100%;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--font-color-2);
}

.pdf-page-range-input {
  border: 1px solid var(--card-action-border);
  box-shadow: none;
  font-size: 1rem;
  padding: 10px 12px;
  color: var(--form-input-font-color);
  background-color: var(--form-input-bg-color);
  width: 100%;
  max-width: 220px;
  min-height: 44px;
  line-height: 1.2;
  text-align: center;
  margin-top: 2px;
  border-radius: var(--radius-control);
}

.pdf-page-range-input:hover {
  border-color: var(--focus-color);
}

.pdf-page-range-input:focus-visible {
  outline: 2px solid var(--focus-color);
  outline-offset: 2px;
}

.pdf-page-range-input::placeholder {
  color: var(--form-placeholder-color);
  font-size: 1rem;
}

.pdf-page-range-input[aria-invalid="true"],
#page-number-start[aria-invalid="true"],
#page-number-template[aria-invalid="true"],
.text-line-options [aria-invalid="true"] {
  border-color: var(--color-red-text);
}

.pdf-page-range-error,
.control-error {
  color: var(--color-red-text);
  font-size: 0.8rem;
  margin: 0.25rem 0 0;
}


.image-layout-card-select {
  width: 100%;
  max-width: 220px;
  min-height: 44px;
  padding: 8px 34px 8px 12px;
  border-radius: var(--radius-control);
  border: 1px solid var(--border-color);
  background-color: var(--form-input-bg-color);
  background-image:
    linear-gradient(45deg, transparent 50%, color-mix(in srgb, var(--color-blue-1) 70%, transparent) 50%),
    linear-gradient(135deg, color-mix(in srgb, var(--color-blue-1) 70%, transparent) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) calc(50% - 2px),
    calc(100% - 12px) calc(50% - 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  color: var(--form-input-font-color);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-white) 30%, transparent), 0 1px 2px color-mix(in srgb, var(--color-black) 4%, transparent);
  appearance: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.image-layout-card-select:hover {
  border-color: var(--focus-color);
}

.image-layout-card-select:focus-visible {
  outline: 2px solid var(--focus-color);
  outline-offset: 2px;
}

[data-theme="dark"] .image-layout-card-select {
  background-image:
    linear-gradient(45deg, transparent 50%, color-mix(in srgb, var(--color-blue-text) 80%, transparent) 50%),
    linear-gradient(135deg, color-mix(in srgb, var(--color-blue-text) 80%, transparent) 50%, transparent 50%);
  border-color: var(--border-color);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-white) 6%, transparent), 0 1px 2px color-mix(in srgb, var(--color-black) 15%, transparent);
}

[data-theme="dark"] .image-layout-card-select:hover {
  background-color: var(--color-dark-select-bg);
  border-color: var(--focus-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-blue-1) 10%, transparent);
}

/* Delete Button */
.delete-file-button {
  background: var(--card-action-bg);
  border: 1px solid var(--card-action-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: static;
  color: var(--font-color-2);
  padding: 0;
  box-shadow: none;
  border-radius: var(--radius-control);
  transition: var(--transition-fast);
  opacity: 1;
  z-index: 2;
  width: 44px;
  min-width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.delete-file-button:hover {
  background: var(--color-red-1);
  color: var(--color-white);
  opacity: 1;
  transform: none;
  border: none;
  box-shadow: none;
}

.delete-file-button:focus-visible {
  outline: 2px solid var(--focus-color);
  outline-offset: 2px;
}

.delete-file-button:active {
  background: var(--color-red-2);
  color: var(--color-white);
  box-shadow: none;
  border: none;
  transform: scale(0.95);
}

.delete-file-button .icon {
  font-size: 20px;
  line-height: 1;
}

/* Blank Page Card */
.blank-page-preview {
  display: flex;
  align-items: center;
  justify-content: center;
}

.blank-page-preview .icon {
  font-size: 36px;
  opacity: 0.35;
  color: var(--font-color-filelist);
}

.blank-page-card {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 16px;
  color: var(--font-color-filelist);
  font-style: italic;
  min-height: 88px;
}