/* ================================
   Drop Zone Component
   ================================ */
.drop-zone {
  background: var(--color-bg-secondary);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.drop-zone.dragover {
  transform: scale(1.01);
}

.drop-zone-content {
  pointer-events: none;
}

.drop-zone-content .btn {
  pointer-events: auto;
}

.drop-zone-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  color: var(--color-text-muted);
}

.drop-zone-icon svg {
  width: 100%;
  height: 100%;
}

.drop-zone-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.drop-zone-subtitle {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.drop-zone-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-lg);
}

/* ================================
   Desktop Notice
   ================================ */
.desktop-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.14), rgba(99, 102, 241, 0.08));
  border: 1px solid rgba(245, 158, 11, 0.28);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.desktop-notice-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.16);
  color: var(--color-warning);
  font-weight: 700;
  flex-shrink: 0;
}

.desktop-notice-copy {
  flex: 1;
  min-width: 0;
}

.desktop-notice-copy strong {
  display: block;
  color: var(--color-text);
  margin-bottom: 2px;
}

.desktop-notice-copy p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.desktop-notice-dismiss {
  flex-shrink: 0;
}

/* ================================
   Notifications
   ================================ */
.notification-stack {
  position: fixed;
  right: var(--spacing-lg);
  bottom: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  width: min(420px, calc(100vw - 2rem));
  z-index: 1000;
  pointer-events: none;
}

.notification {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  animation: notification-enter 180ms ease;
}

.notification-body {
  flex: 1;
  min-width: 0;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  white-space: pre-line;
}

.notification-close {
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1.125rem;
  line-height: 1;
  padding: 0;
}

.notification-close:hover {
  color: var(--color-text);
}

.notification-warning {
  border-left-color: var(--color-warning);
}

.notification-error {
  border-left-color: var(--color-danger);
}

.notification-success {
  border-left-color: var(--color-success);
}

.notification-exit {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

@keyframes notification-enter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================
   File Info Component
   ================================ */
.file-info {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  animation: slideIn 0.3s ease;
}

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

.file-info-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.file-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.file-icon svg {
  width: 24px;
  height: 24px;
}

.file-details {
  flex: 1;
  min-width: 0;
}

.file-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ================================
   Page Grid Component
   ================================ */
.page-grid {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  animation: slideIn 0.3s ease;
}

.page-grid-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.page-grid-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.selected-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.thumbnails {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--spacing-md);
}

.thumbnail {
  position: relative;
  aspect-ratio: 3/4;
  background: var(--color-bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.thumbnail:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.thumbnail.selected {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.thumbnail canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.thumbnail-page {
  position: absolute;
  bottom: var(--spacing-xs);
  right: var(--spacing-xs);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  font-size: var(--font-size-xs);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.thumbnail-checkbox {
  position: absolute;
  top: var(--spacing-xs);
  left: var(--spacing-xs);
  width: 22px;
  height: 22px;
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.thumbnail.selected .thumbnail-checkbox {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.thumbnail-checkbox svg {
  width: 14px;
  height: 14px;
  color: white;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.thumbnail.selected .thumbnail-checkbox svg {
  opacity: 1;
}

/* ================================
   Settings Component
   ================================ */
.settings {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  animation: slideIn 0.3s ease;
}

.settings-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
}

.setting-group {
  margin-bottom: var(--spacing-lg);
}

.setting-group:last-of-type {
  margin-bottom: var(--spacing-xl);
}

@media (max-width: 640px) {
  .desktop-notice {
    flex-direction: column;
    align-items: stretch;
  }

  .desktop-notice-dismiss {
    width: 100%;
  }

  .notification-stack {
    right: var(--spacing-md);
    bottom: var(--spacing-md);
    width: calc(100vw - 1.5rem);
  }
}

.setting-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.settings-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.compat-callout {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.compat-callout-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.compat-callout-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-sm) 0;
  line-height: 1.4;
}

.compat-callout-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.radio-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.radio-item input {
  display: none;
}

.radio-box {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  position: relative;
  transition: all var(--transition-fast);
}

.radio-item input:checked + .radio-box {
  border-color: var(--color-primary);
}

.radio-box::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
}

.radio-item input:checked + .radio-box::after {
  transform: translate(-50%, -50%) scale(1);
}

/* Stitch Options */
.stitch-options {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-md);
  animation: slideIn 0.2s ease;
}

/* Range Slider */
.range-slider {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

/* Color Picker */
.color-picker-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.color-picker {
  width: 40px;
  height: 40px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  overflow: hidden;
}

.color-picker::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-picker::-webkit-color-swatch {
  border: none;
}

.color-value {
  font-size: var(--font-size-sm);
  font-family: monospace;
  color: var(--color-text-secondary);
}

/* Convert Button */
.convert-btn {
  width: 100%;
}

/* ================================
   Progress Component
   ================================ */
.progress-section {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.progress-content {
  max-width: 400px;
  margin: 0 auto;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  margin: 0 auto var(--spacing-lg);
  animation: spin 1s linear infinite;
}

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

.progress-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.progress-bar {
  height: 8px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #8b5cf6);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

/* ================================
   Results Component
   ================================ */
.results {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  animation: slideIn 0.3s ease;
}

.results-header {
  margin-bottom: var(--spacing-lg);
}

.results-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-success);
}

.results-icon {
  width: 24px;
  height: 24px;
}

.results-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  max-height: 300px;
  overflow-y: auto;
  padding: var(--spacing-xs);
}

.result-item {
  position: relative;
  aspect-ratio: 3/4;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.result-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.result-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.result-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.result-item:hover .result-item-overlay {
  opacity: 1;
}

.result-item-overlay svg {
  width: 24px;
  height: 24px;
  color: white;
}

.result-item-page {
  position: absolute;
  bottom: var(--spacing-xs);
  right: var(--spacing-xs);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  font-size: var(--font-size-xs);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.results-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.results-actions .btn {
  flex: 1;
  min-width: 150px;
}

/* ================================
   File List Component (for merge)
   ================================ */
.file-list {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.file-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.file-list-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

.file-list-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.file-list-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.file-list-item:hover {
  background: var(--color-border);
}

.file-list-item.sortable-ghost {
  opacity: 0.5;
}

.file-list-item .drag-handle {
  cursor: grab;
  color: var(--color-text-muted);
}

.file-list-item .drag-handle:active {
  cursor: grabbing;
}

.file-list-item .file-info {
  flex: 1;
  min-width: 0;
}

.file-list-item .file-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.file-list-item .file-meta {
  font-size: var(--font-size-xs);
}

.file-list-item .remove-btn {
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.file-list-item .remove-btn:hover {
  color: var(--color-danger);
}

/* ================================
   Tool Cards (for home page)
   ================================ */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.tool-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-xl);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition-normal);
}

.tool-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.tool-card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.tool-card-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.tool-card-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-align: center;
}

/* ================================
   Responsive
   ================================ */
@media (max-width: 640px) {
  .drop-zone {
    padding: var(--spacing-xl);
  }
  
  .drop-zone-icon {
    width: 60px;
    height: 60px;
  }
  
  .drop-zone-title {
    font-size: var(--font-size-lg);
  }
  
  .thumbnails {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  }
  
  .radio-group {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .results-actions {
    flex-direction: column;
  }
  
  .results-actions .btn {
    width: 100%;
  }
  
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  .tool-card {
    padding: var(--spacing-lg);
  }
  
  .tool-card-icon {
    font-size: 2rem;
  }
}