/* ==========================================================================
   SmartDocify - Merge Images Online Tool Stylesheet
   ========================================================================== */

/* Layout & Containers */
.merge-tool-wrapper {
  margin-bottom: 3.5rem;
}

.merge-workspace {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.75rem;
  align-items: start;
}

@media (max-width: 1024px) {
  .merge-workspace {
    grid-template-columns: 1fr;
  }
}

/* Privacy Banner */
.privacy-banner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 0.875rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.925rem;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.privacy-banner-icon {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

/* Upload Dropzone */
.merge-dropzone {
  background: var(--bg-surface);
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  outline: none;
}

.merge-dropzone:hover,
.merge-dropzone.dragover {
  border-color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
}

.merge-dropzone.dragover {
  border-style: solid;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.dropzone-icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem auto;
  transition: transform 0.2s ease;
}

.merge-dropzone:hover .dropzone-icon-circle {
  transform: scale(1.08);
}

.dropzone-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.dropzone-subtitle {
  font-size: 0.925rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.dropzone-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.dropzone-hints {
  font-size: 0.825rem;
  color: var(--text-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.dropzone-hint-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Image Strip & Management */
.images-manager-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.images-manager-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.images-count-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.images-count-badge span {
  background: var(--primary-light);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.8rem;
}

.manager-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.images-list-strip {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 0.5rem 0.25rem 1rem 0.25rem;
  scroll-behavior: smooth;
  scrollbar-width: thin;
}

.images-list-strip::-webkit-scrollbar {
  height: 6px;
}

.images-list-strip::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}

/* Image Card Item */
.image-item-card {
  flex: 0 0 170px;
  background: var(--bg-surface-elevated, var(--bg-surface));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  position: relative;
  transition: all 0.2s ease;
  cursor: grab;
  user-select: none;
  display: flex;
  flex-direction: column;
}

.image-item-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.image-item-card.dragging {
  opacity: 0.4;
  cursor: grabbing;
  border: 2px dashed var(--primary);
}

.image-item-card.drag-over {
  border: 2px solid var(--primary);
  transform: scale(1.03);
}

.image-card-badge {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  background: rgba(15, 23, 42, 0.75);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  backdrop-filter: blur(4px);
  z-index: 2;
}

.image-thumb-wrap {
  width: 100%;
  height: 110px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.6rem;
  position: relative;
}

.image-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-card-info {
  flex: 1;
  margin-bottom: 0.5rem;
}

.image-card-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.2rem;
}

.image-card-specs {
  font-size: 0.725rem;
  color: var(--text-muted);
}

.image-card-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.5rem;
}

.card-ctrl-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  border-radius: 4px;
  padding: 0.25rem 0.4rem;
  font-size: 0.75rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.card-ctrl-btn:hover:not(:disabled) {
  background: var(--bg-surface);
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.card-ctrl-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.card-ctrl-btn.remove-btn:hover {
  background: #fee2e2;
  border-color: #ef4444;
  color: #dc2626;
}

/* Add More Card */
.add-more-card {
  flex: 0 0 150px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  background: transparent;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.add-more-card:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.add-more-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 0.5rem;
}

.add-more-text {
  font-size: 0.85rem;
  font-weight: 600;
}

/* Settings Panel */
.settings-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.settings-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.settings-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.settings-card-title svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.45rem;
}

.form-label-val {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
}

/* Direction Segmented Control */
.segmented-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  background: var(--bg-body);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.seg-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 0.5rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.seg-btn svg {
  width: 18px;
  height: 18px;
}

.seg-btn.active {
  background: var(--bg-surface);
  color: var(--primary);
  font-weight: 700;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-subtle);
}

/* Select & Inputs */
.form-select,
.form-input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-body);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-select:focus,
.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Sliders with Value Input */
.slider-input-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.range-slider {
  flex: 1;
  accent-color: var(--primary);
  cursor: pointer;
  height: 6px;
  border-radius: 3px;
  background: var(--border-strong);
}

.num-input-small {
  width: 68px;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-body);
  color: var(--text-primary);
  font-size: 0.85rem;
  text-align: center;
}

/* Alignment Pill Buttons */
.align-pill-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.35rem;
}

.align-pill-btn {
  padding: 0.5rem;
  background: var(--bg-body);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.align-pill-btn svg {
  width: 15px;
  height: 15px;
}

.align-pill-btn.active {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 700;
}

/* Color Pickers & Presets */
.color-picker-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.35rem;
}

.color-input-native {
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: transparent;
  flex-shrink: 0;
}

.color-hex-text {
  flex: 1;
  padding: 0.55rem 0.75rem;
  font-family: monospace;
  font-size: 0.875rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-body);
  color: var(--text-primary);
}

.color-swatches {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.color-swatch-btn {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  border: 2px solid var(--border-subtle);
  cursor: pointer;
  padding: 0;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.color-swatch-btn:hover {
  transform: scale(1.15);
  border-color: var(--primary);
}

.color-swatch-btn.transparent-swatch {
  background-image: linear-gradient(45deg, #cbd5e1 25%, transparent 25%),
                    linear-gradient(-45deg, #cbd5e1 25%, transparent 25%),
                    linear-gradient(45deg, transparent 75%, #cbd5e1 75%),
                    linear-gradient(-45deg, transparent 75%, #cbd5e1 75%);
  background-size: 10px 10px;
  background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
  background-color: #ffffff;
}

/* Custom Dimensions Row */
.custom-dim-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.dim-input-wrapper {
  position: relative;
}

.dim-input-wrapper span {
  position: absolute;
  right: 0.65rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.75rem;
  color: var(--text-subtle);
  pointer-events: none;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.825rem;
  color: var(--text-muted);
  cursor: pointer;
  margin-top: 0.5rem;
}

/* Preview & Export Area */
.preview-column {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.preview-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--bg-body);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.preview-toolbar-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.zoom-controls {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.2rem;
}

.zoom-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.zoom-btn:hover {
  background: var(--bg-body);
  color: var(--text-primary);
}

.zoom-level-text {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 44px;
  text-align: center;
}

/* Canvas Viewport */
.canvas-viewport {
  min-height: 420px;
  max-height: 640px;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  position: relative;
  scrollbar-width: thin;
}

.canvas-viewport.checkerboard-bg {
  background-color: #f8fafc;
  background-image: linear-gradient(45deg, #e2e8f0 25%, transparent 25%),
                    linear-gradient(-45deg, #e2e8f0 25%, transparent 25%),
                    linear-gradient(45deg, transparent 75%, #e2e8f0 75%),
                    linear-gradient(-45deg, transparent 75%, #e2e8f0 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

[data-theme="dark"] .canvas-viewport.checkerboard-bg {
  background-color: #0b1120;
  background-image: linear-gradient(45deg, #1e293b 25%, transparent 25%),
                    linear-gradient(-45deg, #1e293b 25%, transparent 25%),
                    linear-gradient(45deg, transparent 75%, #1e293b 75%),
                    linear-gradient(-45deg, transparent 75%, #1e293b 75%);
}

#merge-canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  border-radius: 4px;
  transition: transform 0.15s ease;
  transform-origin: center center;
}

/* Canvas Placeholder */
.canvas-empty-state {
  text-align: center;
  color: var(--text-muted);
  max-width: 320px;
  padding: 2rem 1rem;
}

.canvas-empty-icon {
  width: 56px;
  height: 56px;
  color: var(--text-subtle);
  margin-bottom: 1rem;
}

.canvas-empty-state h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.canvas-empty-state p {
  font-size: 0.875rem;
  line-height: 1.5;
}

/* Canvas Stats Bar */
.preview-stats-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: var(--bg-body);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.825rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.stats-items {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.stat-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.stat-item strong {
  color: var(--text-primary);
  font-weight: 700;
}

/* Export Options & Actions */
.export-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.export-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.25rem;
}

@media (max-width: 640px) {
  .export-grid {
    grid-template-columns: 1fr;
  }
}

.export-actions-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-download-primary {
  flex: 1;
  min-width: 200px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
}

.btn-clipboard {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
}

/* Modal for URL input */
.merge-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.merge-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.merge-modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  max-width: 480px;
  width: 100%;
  padding: 1.75rem;
  box-shadow: var(--shadow-lg);
  transform: translateY(12px);
  transition: transform 0.2s ease;
}

.merge-modal-backdrop.open .merge-modal-dialog {
  transform: translateY(0);
}

.merge-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.merge-modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.merge-modal-body p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.merge-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

/* Toast Notifications */
.merge-toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.merge-toast {
  background: var(--bg-surface-elevated, #1e293b);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  pointer-events: auto;
  animation: toastFadeIn 0.25s ease forwards;
  max-width: 360px;
}

.merge-toast.success {
  border-left: 4px solid #10b981;
}

.merge-toast.warning {
  border-left: 4px solid #f59e0b;
}

.merge-toast.error {
  border-left: 4px solid #ef4444;
}

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

/* Responsive Adjustments */
@media (max-width: 640px) {
  .images-list-strip {
    gap: 0.75rem;
  }
  .image-item-card {
    flex: 0 0 145px;
  }
  .image-thumb-wrap {
    height: 90px;
  }
  .preview-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .zoom-controls {
    justify-content: center;
  }
}