/* ===== Scan to PDF — KukuPDF ===== */

/* ---- Category Selection ---- */
.scan-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-md);
  margin: var(--space-xl) 0;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.scan-category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-md);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
}

.scan-category-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-primary);
}

.scan-category-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.2);
  background: rgba(57, 255, 20, 0.06);
}

.scan-category-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-icon);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(123, 47, 255, 0.12);
  color: var(--primary-light);
  transition: all var(--transition-base);
}

.scan-category-card:hover .scan-category-icon,
.scan-category-card.selected .scan-category-icon {
  background: rgba(57, 255, 20, 0.15);
  color: var(--accent);
}

.scan-category-icon i { width: 24px; height: 24px; }

.scan-category-label {
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--text-main);
}

.scan-category-hint {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.3;
}

.scan-start-btn-wrap { text-align: center; margin-top: var(--space-lg); }

/* ---- Inline Category Picker (shown after Start Scanning tap) ---- */
.scan-cat-inline {
  max-width: 520px;
  margin: var(--space-lg) auto 0;
  padding: var(--space-md);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  animation: catSlideIn 0.3s ease;
}

@keyframes catSlideIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.scan-cat-inline-title {
  font-weight: 700;
  font-size: 15px;
  color: var(--text-main);
  margin-bottom: var(--space-sm);
  text-align: center;
}

/* ---- Inline Review / Edit Screen ---- */
.scan-review {
  display: flex;
  flex-direction: column;
  min-height: 70vh;
  background: #0a0a0a;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-sm) 0;
}

.scan-review-canvas-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: #000;
  min-height: 300px;
}

.scan-review-canvas-wrap canvas {
  max-width: 100%;
  max-height: 60vh;
  display: block;
  border-radius: 4px;
}

.scan-review-edit-panel {
  padding: 10px 12px;
  background: rgba(20, 15, 35, 0.95);
  border-top: 1px solid rgba(255,255,255,0.08);
  animation: catSlideIn 0.2s ease;
}

.scan-review-filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 2px 0;
}
.scan-review-filters::-webkit-scrollbar { display: none; }

.scan-filter-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 2px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: rgba(255,255,255,0.7);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  min-width: 64px;
  flex-shrink: 0;
  transition: all 0.15s;
}
.scan-filter-chip i { width: 18px; height: 18px; }
.scan-filter-chip:hover { color: #fff; background: rgba(255,255,255,0.08); }
.scan-filter-chip.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(57, 255, 20, 0.1);
}

.scan-review-actions {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 14px 12px;
  background: rgba(10, 8, 20, 0.95);
  border-top: 1px solid rgba(255,255,255,0.08);
  gap: 4px;
}

.scan-review-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  border-radius: 12px;
  color: rgba(255,255,255,0.8);
  font-size: 11px;
  font-weight: 600;
  transition: all 0.15s;
  min-width: 56px;
}
.scan-review-btn i { width: 22px; height: 22px; }
.scan-review-btn:hover { color: #fff; background: rgba(255,255,255,0.1); }

.scan-review-btn.primary {
  background: var(--accent);
  color: #000;
  font-weight: 700;
  border-radius: 14px;
  padding: 10px 20px;
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.3);
}
.scan-review-btn.primary:hover { background: var(--accent-hover); }

.scan-review-edit-label {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  text-align: center;
  margin-bottom: 8px;
  font-weight: 500;
}

.scan-review-canvas-wrap { position: relative; }

/* Draggable corner handles */
.scan-corner-handle {
  position: absolute;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid #fff;
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.5), 0 2px 6px rgba(0,0,0,0.5);
  cursor: grab;
  touch-action: none;
  z-index: 10;
  transform: translate(-50%, -50%);
  transition: transform 0.1s, box-shadow 0.1s;
}
.scan-corner-handle:active,
.scan-corner-handle.dragging {
  cursor: grabbing;
  transform: translate(-50%, -50%) scale(1.3);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.7), 0 2px 10px rgba(0,0,0,0.6);
}

/* Camera flash effect */
.scanner-flash {
  position: absolute;
  inset: 0;
  background: #fff;
  opacity: 0;
  pointer-events: none;
  z-index: 5;
  transition: opacity 0.05s;
}
.scanner-flash.active {
  animation: flashBlink 0.15s ease;
}
@keyframes flashBlink {
  0% { opacity: 0.8; }
  100% { opacity: 0; }
}

/* ---- Camera Viewfinder (Desktop) ---- */
.scanner-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: #000;
  display: flex;
  flex-direction: column;
  animation: scannerFadeIn 0.3s ease;
}

@keyframes scannerFadeIn { from { opacity: 0; } to { opacity: 1; } }

.scanner-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(10px);
  z-index: 2;
  min-height: 52px;
}

.scanner-top-bar-title {
  font-weight: 600;
  font-size: var(--fs-base);
  color: #fff;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.scanner-page-count {
  background: var(--accent);
  color: var(--text-inverse);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 700;
  font-family: var(--font-mono);
}

.scanner-close-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}
.scanner-close-btn:hover { background: rgba(255,255,255,0.15); }

.scanner-viewfinder {
  flex: 1; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.scanner-viewfinder video { width: 100%; height: 100%; object-fit: cover; }
.scanner-viewfinder canvas { display: none; }

.scanner-guide {
  position: absolute; width: 40px; height: 40px;
  border-color: var(--accent); border-style: solid; border-width: 0;
  pointer-events: none; opacity: 0.7;
}
.scanner-guide.tl { top: 24px; left: 24px; border-top-width: 3px; border-left-width: 3px; border-radius: 4px 0 0 0; }
.scanner-guide.tr { top: 24px; right: 24px; border-top-width: 3px; border-right-width: 3px; border-radius: 0 4px 0 0; }
.scanner-guide.bl { bottom: 24px; left: 24px; border-bottom-width: 3px; border-left-width: 3px; border-radius: 0 0 0 4px; }
.scanner-guide.br { bottom: 24px; right: 24px; border-bottom-width: 3px; border-right-width: 3px; border-radius: 0 0 4px 0; }

.scanner-flash {
  position: absolute; inset: 0; background: #fff;
  opacity: 0; pointer-events: none; z-index: 3;
}
.scanner-flash.active { animation: flashPulse 0.25s ease-out; }
@keyframes flashPulse { 0% { opacity: 0.85; } 100% { opacity: 0; } }

/* Bottom Controls */
.scanner-controls {
  background: rgba(0,0,0,0.7); backdrop-filter: blur(12px);
  padding: var(--space-md); z-index: 2;
}
.scanner-thumb-strip {
  display: flex; gap: var(--space-sm); overflow-x: auto;
  padding: var(--space-xs) 0 var(--space-sm);
  scrollbar-width: none; margin-bottom: var(--space-sm); min-height: 58px;
}
.scanner-thumb-strip::-webkit-scrollbar { display: none; }

.scanner-thumb {
  width: 48px; height: 64px; border-radius: 6px;
  overflow: hidden; flex-shrink: 0;
  border: 2px solid rgba(255,255,255,0.25);
  position: relative; cursor: pointer;
  transition: border-color var(--transition-fast);
}
.scanner-thumb:hover { border-color: var(--accent); }
.scanner-thumb img { width: 100%; height: 100%; object-fit: cover; }
.scanner-thumb-number {
  position: absolute; bottom: 2px; right: 2px;
  background: rgba(0,0,0,0.7); color: #fff;
  font-size: 9px; font-weight: 700; padding: 0 4px;
  border-radius: 3px; font-family: var(--font-mono);
}

.scanner-action-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-md);
}
.scanner-capture-btn {
  width: 68px; height: 68px; border-radius: 50%;
  background: #fff; border: 4px solid rgba(255,255,255,0.4);
  cursor: pointer; position: relative;
  transition: all var(--transition-fast); flex-shrink: 0;
}
.scanner-capture-btn::after {
  content: ''; position: absolute; inset: 4px; border-radius: 50%;
  background: #fff; transition: background var(--transition-fast);
}
.scanner-capture-btn:hover { transform: scale(1.06); }
.scanner-capture-btn:active::after { background: var(--accent); }

.scanner-side-btn {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  color: #fff; font-size: 11px; font-weight: 500;
  min-width: 64px; padding: var(--space-xs); border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}
.scanner-side-btn:hover { background: rgba(255,255,255,0.1); }
.scanner-side-btn i { width: 22px; height: 22px; }

.scanner-finish-btn {
  background: var(--accent) !important; color: var(--text-inverse) !important;
  padding: 8px 20px; border-radius: var(--radius-full);
  font-weight: 700; font-size: var(--fs-sm);
  display: flex; align-items: center; gap: 6px;
  box-shadow: var(--glow-btn); transition: all var(--transition-base);
}
.scanner-finish-btn:hover { background: var(--accent-hover) !important; transform: scale(1.04); }


/* ========== EDIT / REVIEW SCREEN ========== */
.scan-edit-overlay {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-modal) + 5);
  background: #0a0a0a;
  display: flex;
  flex-direction: column;
  animation: scannerFadeIn 0.25s ease;
}

.scan-edit-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(10px);
  z-index: 2;
}

.scan-edit-title {
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.scan-edit-close {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; border-radius: 8px;
  transition: background 0.15s;
}
.scan-edit-close:hover { background: rgba(255,255,255,0.12); }

/* Image preview area (uses CSS filters for live preview — reliable on mobile) */
.scan-edit-preview {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #000;
  padding: 12px;
}

.scan-edit-img {
  max-width: 100%;
  max-height: 100%;
  display: block;
  border-radius: 4px;
  transition: filter 0.2s ease, transform 0.3s ease;
  object-fit: contain;
}

/* CSS filter classes — applied instantly, no canvas needed for preview */
.scan-edit-img.filter-auto { filter: contrast(1.3) brightness(1.05); }
.scan-edit-img.filter-document { filter: contrast(1.4) brightness(1.0) saturate(0.8); }
.scan-edit-img.filter-whiteboard { filter: brightness(1.3) contrast(1.1) saturate(0.7); }
.scan-edit-img.filter-color { filter: none; }
.scan-edit-img.filter-bw { filter: grayscale(1) contrast(1.8); }

/* Filter strip */
.scan-edit-filters {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  overflow-x: auto;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  scrollbar-width: none;
}
.scan-edit-filters::-webkit-scrollbar { display: none; }

.scan-filter-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border-radius: 10px;
  color: rgba(255,255,255,0.7);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.15s;
  border: 2px solid transparent;
  min-width: 64px;
}

.scan-filter-btn:hover { color: #fff; background: rgba(255,255,255,0.08); }

.scan-filter-btn.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(57, 255, 20, 0.08);
}

.scan-filter-btn i { width: 18px; height: 18px; }

/* Bottom action bar */
.scan-edit-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(10px);
  gap: 10px;
}

.scan-edit-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.15s;
}

.scan-edit-btn.retake {
  color: #fff;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
}
.scan-edit-btn.retake:hover { background: rgba(255,255,255,0.18); }

.scan-edit-btn.rotate {
  color: #fff;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 10px 14px;
}
.scan-edit-btn.rotate:hover { background: rgba(255,255,255,0.18); }

.scan-edit-btn.confirm {
  color: #000;
  background: var(--accent);
  font-weight: 700;
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.3);
  flex: 1;
  justify-content: center;
  max-width: 200px;
}
.scan-edit-btn.confirm:hover {
  background: var(--accent-hover);
  transform: scale(1.02);
}

.scan-edit-btn i { width: 18px; height: 18px; }


/* ---- Page Manager ---- */
.scan-page-manager { margin-top: var(--space-xl); }

.scan-pages-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-lg); flex-wrap: wrap; gap: var(--space-sm);
}
.scan-pages-header h3 {
  font-size: var(--fs-xl);
  display: flex; align-items: center; gap: var(--space-sm);
}
.scan-pages-actions { display: flex; gap: var(--space-sm); }

.scan-pages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-md);
}

.scan-page-card {
  position: relative; border-radius: var(--radius-md);
  overflow: hidden; border: 2px solid var(--border);
  background: var(--bg-surface); cursor: grab;
  transition: all var(--transition-base); aspect-ratio: 3/4;
}
.scan-page-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); }
.scan-page-card.dragging { opacity: 0.5; border-color: var(--accent); }
.scan-page-card img { width: 100%; height: 100%; object-fit: cover; }

.scan-page-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(transparent 50%, rgba(0,0,0,0.7));
  display: flex; align-items: flex-end; justify-content: space-between;
  padding: var(--space-sm); opacity: 0;
  transition: opacity var(--transition-fast);
}
.scan-page-card:hover .scan-page-overlay { opacity: 1; }

/* Mobile: always show overlay */
@media (hover: none) {
  .scan-page-overlay { opacity: 1; }
}

.scan-page-number {
  background: rgba(0,0,0,0.6); color: #fff;
  font-size: var(--fs-xs); font-weight: 700;
  padding: 2px 8px; border-radius: var(--radius-full);
  font-family: var(--font-mono);
}
.scan-page-actions { display: flex; gap: 4px; }

.scan-page-action-btn {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); background: rgba(0,0,0,0.5);
  color: #fff; transition: background var(--transition-fast);
}
.scan-page-action-btn:hover { background: rgba(123,47,255,0.8); }
.scan-page-action-btn.danger:hover { background: rgba(255,82,82,0.8); }
.scan-page-action-btn i { width: 14px; height: 14px; }

/* ---- Generate Area (with Keep Scanning) ---- */
.scan-generate-area {
  text-align: center;
  margin-top: var(--space-xl);
  padding: var(--space-xl);
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.scan-generate-area h3 {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-xs);
}

.scan-cta-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.scan-cta-group .btn-primary {
  width: 100%;
  max-width: 320px;
  padding: 14px 24px;
  font-size: 16px;
}

.scan-cta-secondary {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.scan-cta-secondary .btn {
  font-size: 13px;
}

/* ---- Preview Modal ---- */
.scan-preview-modal {
  position: fixed; inset: 0;
  z-index: calc(var(--z-modal) + 10);
  background: rgba(0,0,0,0.9);
  display: flex; align-items: center; justify-content: center;
  animation: scannerFadeIn 0.2s ease;
}
.scan-preview-modal img {
  max-width: 90vw; max-height: 85vh;
  border-radius: var(--radius-md); box-shadow: var(--shadow-xl);
}
.scan-preview-close {
  position: absolute; top: var(--space-md); right: var(--space-md);
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; background: rgba(255,255,255,0.1); border-radius: var(--radius-md);
}
.scan-preview-close:hover { background: rgba(255,255,255,0.25); }

/* ---- Processing spinner overlay ---- */
.scan-processing-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 20;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
}

/* ========== CATEGORY PICKER BOTTOM SHEET ========== */
.scan-cat-sheet {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-modal) + 20);
  pointer-events: none;
}

.scan-cat-sheet.open { pointer-events: auto; }

.scan-cat-sheet-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.scan-cat-sheet.open .scan-cat-sheet-backdrop { opacity: 1; }

.scan-cat-sheet-panel {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: #1a1230;
  border-top: 1px solid rgba(123, 47, 255, 0.3);
  border-radius: 20px 20px 0 0;
  padding: 12px 20px 28px;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
  max-height: 50vh;
  overflow-y: auto;
}

.scan-cat-sheet.open .scan-cat-sheet-panel {
  transform: translateY(0);
}

.scan-cat-sheet-handle {
  width: 40px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.2);
  margin: 0 auto 16px;
}

.scan-cat-sheet-title {
  font-weight: 700;
  font-size: 17px;
  color: #fff;
  margin-bottom: 16px;
  text-align: center;
}

.scan-cat-slider {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 0 12px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.scan-cat-slider::-webkit-scrollbar { display: none; }

.scan-cat-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  min-width: 80px;
  flex-shrink: 0;
  transition: all 0.15s ease;
  cursor: pointer;
}

.scan-cat-chip i { width: 22px; height: 22px; }

.scan-cat-chip:hover {
  border-color: rgba(123, 47, 255, 0.4);
  color: #fff;
  background: rgba(123, 47, 255, 0.1);
}

.scan-cat-chip.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(57, 255, 20, 0.1);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.15);
}

.scan-cat-go {
  width: 100%;
  margin-top: 8px;
  padding: 14px !important;
  font-size: 15px !important;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .scan-pages-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .scanner-capture-btn { width: 60px; height: 60px; }

  .scan-edit-actions { padding: 10px 12px; }
  .scan-edit-btn { padding: 8px 14px; font-size: 13px; }
  .scan-edit-btn.confirm { max-width: 160px; }
}

@media (max-width: 480px) {
  .scan-pages-grid { grid-template-columns: repeat(2, 1fr); }
}