* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --background: #f9fafb;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --success: #10b981;
  --error: #ef4444;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.5;
}

.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2rem;
  box-shadow: var(--shadow);
}

.header h1 {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--primary-color);
}

.main-content {
  flex: 1;
  padding: 2rem;
  max-width: none;
  margin: 0 auto;
  width: 100%;
}

.editor-layout {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 1rem;
  align-items: start;
}

.editor-canvas-column {
  min-width: 0;
}

.editor-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.drop-zone {
  display: block;
  border: 3px dashed var(--border);
  border-radius: 12px;
  padding: 3rem;
  text-align: center;
  background-color: var(--surface);
  transition: all 0.3s ease;
  cursor: pointer;
  /* Ensure label behaves like block element */
  width: 100%;
  box-sizing: border-box;
}

.drop-zone:hover {
  border-color: var(--primary-color);
  background-color: #f5f3ff;
}

.drop-zone.drag-over {
  border-color: var(--primary-color);
  background-color: #eef2ff;
  border-style: solid;
}

.drop-zone-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.drop-zone-text {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.drop-zone-hint {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.preview-section {
  margin-top: 2rem;
}

.preview-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.preview-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  background-color: var(--surface);
  display: flex;
  flex-direction: column;
}

.preview-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.preview-item:hover .preview-item-delete {
  opacity: 1;
}

.preview-item:hover .preview-item-edit {
  opacity: 1;
}

.preview-item img {
  width: 100%;
  flex: 1;
  object-fit: cover;
}

.preview-item-info {
  padding: 0.5rem;
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  font-size: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.preview-item-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preview-item-dimensions {
  font-size: 0.7rem;
  opacity: 0.9;
}

.preview-item-delete {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background-color: var(--error);
  color: white;
  border: none;
  border-radius: 50%;
  width: 2rem;
  height: 2rem;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.2s ease;
  z-index: 10;
}

.preview-item-edit {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  background-color: rgba(17, 24, 39, 0.85);
  color: #fff;
  border: none;
  border-radius: 999px;
  min-width: 2rem;
  height: 2rem;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.2s ease;
  z-index: 10;
}

.preview-item-edit:hover {
  background-color: #111827;
  transform: scale(1.08);
}

.preview-item-delete:hover {
  background-color: #c82333;
  transform: scale(1.1);
}

.preview-item:hover .preview-item-remove {
  opacity: 1;
}

.photo-text-editor-modal {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: center;
}

.photo-text-editor-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 24, 39, 0.72);
  backdrop-filter: blur(4px);
}

.photo-text-editor-shell {
  position: relative;
  width: min(1200px, calc(100vw - 2rem));
  height: min(880px, calc(100vh - 2rem));
  background: var(--surface);
  border-radius: 16px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.photo-text-editor-header {
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.photo-text-editor-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.photo-text-editor-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.photo-text-editor-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.photo-text-editor-actions {
  display: flex;
  gap: 0.55rem;
}

.photo-text-editor-body {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
}

.photo-text-editor-stage-wrap {
  padding: 1rem;
  background: #f3f4f6;
}

.photo-text-editor-stage {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 12px;
  background: #111827;
  user-select: none;
}

.photo-text-editor-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 8px;
  pointer-events: none;
}

.photo-text-editor-overlay {
  position: absolute;
  left: 8%;
  top: 72%;
  max-width: min(84%, 760px);
  padding: 0.35em 0.6em;
  border-radius: 10px;
  line-height: 1.25;
  font-weight: 700;
  white-space: pre-wrap;
  word-break: break-word;
  cursor: grab;
  touch-action: none;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.photo-text-editor-overlay.dragging {
  cursor: grabbing;
}

.photo-text-editor-controls {
  padding: 1rem;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  overflow: auto;
  background: #ffffff;
}

.photo-text-editor-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.photo-text-editor-field > span {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.photo-text-editor-textarea,
.photo-text-editor-select,
.photo-text-editor-range,
.photo-text-editor-color {
  width: 100%;
}

.photo-text-editor-textarea,
.photo-text-editor-select {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: #fff;
}

.photo-text-editor-textarea {
  min-height: 100px;
  resize: vertical;
}

.photo-text-editor-range {
  accent-color: var(--primary-color);
}

.photo-text-editor-color {
  border: 1px solid var(--border);
  border-radius: 10px;
  height: 42px;
  padding: 0.2rem;
  background: #fff;
}

.photo-text-editor-hint {
  font-size: 0.82rem;
  color: var(--text-secondary);
  background: #f3f4f6;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
}

@media (max-width: 900px) {
  .photo-text-editor-shell {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
  }

  .photo-text-editor-body {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(280px, 1fr) auto;
  }

  .photo-text-editor-controls {
    border-left: none;
    border-top: 1px solid var(--border);
    max-height: 44vh;
  }
}

.actions {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.button {
  padding: 0.75rem 2rem;
  border-radius: 8px;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow);
}

.button-primary {
  background-color: var(--primary-color);
  color: white;
}

.button-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-lg);
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.canvas-section {
  margin-top: 3rem;
  width: 100%;
}

.quality-selector {
  background-color: var(--surface);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.quality-selector h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.quality-slider-container {
  margin-bottom: 1.5rem;
}

.quality-slider-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.quality-label-text {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 500;
}

.quality-value {
  font-size: 1.125rem;
  color: var(--primary-color);
  font-weight: 700;
}

.quality-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(to right, #e5e7eb 0%, var(--primary-color) 100%);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.quality-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease;
}

.quality-slider::-webkit-slider-thumb:hover {
  background: var(--primary-hover);
  transform: scale(1.1);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.quality-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease;
}

.quality-slider::-moz-range-thumb:hover {
  background: var(--primary-hover);
  transform: scale(1.1);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.quality-slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.quality-info {
  padding: 0.75rem;
  background-color: #eff6ff;
  border-left: 4px solid var(--primary-color);
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  min-height: 2.5rem;
  display: flex;
  align-items: center;
}

.interaction-hint {
  padding: 0.75rem;
  background-color: #fef3c7;
  border-left: 4px solid #f59e0b;
  border-radius: 4px;
  color: #92400e;
  font-size: 0.875rem;
  margin-top: 1rem;
}

/* Checkbox Container */
.checkbox-container {
  padding: 0.75rem 0;
  border-bottom: 1px solid #e5e7eb;
}

.checkbox-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  gap: 0.5rem;
  user-select: none;
}

.checkbox-input {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
  accent-color: var(--primary-color);
}

.checkbox-text {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
}

.canvas-container {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--surface);
  padding: 0.75rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  width: 100%;
  min-height: auto;
  position: relative;
}

.mobile-photo-toolbar {
  display: none;
}

@media (max-width: 900px) {
  .canvas-section.has-mobile-toolbar {
    padding-bottom: calc(11rem + env(safe-area-inset-bottom));
  }

  .mobile-photo-toolbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    padding: 0.85rem 1rem calc(0.85rem + env(safe-area-inset-bottom));
    border-top: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.14);
    backdrop-filter: blur(10px);
  }

  .mobile-photo-toolbar-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
  }

  .mobile-photo-toolbar-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
  }

  .mobile-photo-toolbar-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
  }

  .mobile-photo-toolbar-controls {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
  }

  .mobile-photo-toolbar-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
  }

  .mobile-photo-toolbar-value {
    color: var(--primary-color);
    font-weight: 700;
  }

  .mobile-photo-toolbar-slider {
    width: 100%;
    height: 10px;
    border-radius: 999px;
    background: linear-gradient(to right, #dbeafe 0%, var(--primary-color) 100%);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
  }

  .mobile-photo-toolbar-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  }

  .mobile-photo-toolbar-slider::-moz-range-thumb {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  }

  .mobile-photo-toolbar-done {
    width: 100%;
    min-height: 48px;
    padding: 0.8rem 1rem;
    border-radius: 12px;
  }
}

canvas {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--border);
  display: block;
}


.error-message {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--error);
  padding: 1rem;
  border-radius: 8px;
  margin-top: 1rem;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  margin-top: 1rem;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  margin-top: 1rem;
}

.progress-container {
  margin: 1.5rem 0;
  padding: 1rem;
  background-color: var(--background);
  border-radius: 8px;
}

.progress-bar {
  width: 100%;
  height: 24px;
  background-color: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  border-radius: 12px;
  transition: width 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.progress-text {
  margin-top: 0.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.progress-text {
  margin-top: 0.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.export-options {
  margin: 0;
  padding: 0.75rem 1rem;
  background-color: var(--background);
  border-radius: 8px;
}

.export-options h4 {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.format-selector {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.format-option {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  transition: background-color 0.2s;
}

.format-option:hover {
  background-color: var(--surface);
}

.format-option input[type="radio"] {
  cursor: pointer;
  width: 1.25rem;
  height: 1.25rem;
}

.format-option span {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
}

.jpeg-quality {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--surface);
}

.jpeg-quality {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--surface);
}

.jpeg-quality {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--surface);
}

.pdf-settings {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--surface);
  display: flex;
  flex-direction: row;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.pdf-setting-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 150px;
}

.pdf-setting-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.pdf-select {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--surface);
  border-radius: 6px;
  background-color: white;
  font-size: 1rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.2s;
}

.pdf-select:hover {
  border-color: var(--primary-color);
}

.pdf-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.restore-banner {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 1rem 2rem;
  margin: 1rem 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    transform: translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.restore-banner-content {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.restore-banner-icon {
  font-size: 2rem;
}

.restore-banner-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 200px;
}

.restore-banner-text strong {
  font-size: 1.125rem;
}

.restore-banner-text span {
  font-size: 0.875rem;
  opacity: 0.9;
}

.restore-banner-actions {
  display: flex;
  gap: 0.75rem;
}

.clear-all-container {
  display: flex;
  justify-content: flex-end;
  margin: 0;
}

.button-danger {
  background-color: var(--error);
}

.button-danger:hover {
  background-color: #dc2626;
}

.button-secondary {
  background-color: rgba(255, 255, 255, 0.2);
  color: white;
}

.button-secondary:hover {
  background-color: rgba(255, 255, 255, 0.3);
}

@media (max-width: 768px) {
  .main-content {
    padding: 1rem;
  }

  .editor-layout {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .editor-sidebar {
    gap: 0.75rem;
  }
  
  .preview-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }

  .preview-item-edit,
  .preview-item-delete {
    opacity: 1;
  }

  /* Drop zone responsive adjustments */
  .drop-zone {
    padding: 1.5rem 1rem;
  }

  .drop-zone-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
  }

  .drop-zone-text {
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }

  .drop-zone-hint {
    font-size: 0.8125rem;
  }
}

/* Orientation Controls */
.orientation-controls {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.orientation-controls h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.radio-group {
  display: flex;
  gap: 1.5rem;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.radio-label:hover {
  color: var(--primary-color);
}

.radio-label input[type="radio"] {
  cursor: pointer;
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
}

/* Live Preview */
.live-preview-container {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.live-preview-container h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.preview-info {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  padding: 0.5rem 0.75rem;
  background-color: rgba(59, 130, 246, 0.1);
  border-left: 3px solid var(--primary-color);
  border-radius: 4px;
}

.live-preview-canvas {
  display: block;
  max-width: 100%;
  max-height: 400px;
  width: auto;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: white;
  box-shadow: var(--shadow);
}

@media (max-width: 768px) {
  .radio-group {
    flex-direction: column;
    gap: 1rem;
  }
  
  .live-preview-canvas {
    max-height: 300px;
  }
}


/* ============================================
   PHASE 4: Interactive Canvas UI Components
   ============================================ */

/* Toolbar Styles */
.toolbar {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  align-items: stretch;
  box-shadow: var(--shadow);
}

.toolbar-section {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.toolbar-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toolbar-value {
  font-weight: 600;
  color: var(--primary-color);
}

.button-group {
  display: flex;
  gap: 0.5rem;
}

.button-group button {
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text-primary);
  border-radius: 0.375rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 150ms ease;
}

.button-group button:hover {
  background-color: var(--background);
  border-color: var(--primary-color);
}

.button-group button.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
  -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  transition: transform 100ms ease;
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  border: none;
  transition: transform 100ms ease;
}

.slider::-moz-range-thumb:hover {
  transform: scale(1.2);
}

/* Interactive Canvas Cursor States */
.canvas-container {
  cursor: default;
}

.canvas-container.dragging {
  cursor: grabbing;
}

.canvas-container.can-drag {
  cursor: grab;
}

/* Resize Cursor States */
.canvas-container.resize-nwse {
  cursor: nwse-resize;
}

.canvas-container.resize-nesw {
  cursor: nesw-resize;
}

/* Drag Ghost Effect */
.photo-dragging {
  opacity: 0.6;
  transition: opacity 200ms ease-out;
}

/* Reflow Animation */
.photo-reflowing {
  transition: transform 250ms ease-out;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .toolbar {
    padding: 0.7rem;
    gap: 0.75rem;
  }
  
  .toolbar-section {
    width: 100%;
  }
  
  .button-group {
    width: 100%;
  }
  
  .button-group button {
    flex: 1;
  }

  .export-options {
    padding: 0.65rem 0.75rem;
  }

  .format-selector {
    gap: 0.5rem;
  }

  .pdf-settings {
    flex-direction: column;
    gap: 0.5rem;
  }
  
}

/* Pin overlay for photo locking */
.pin-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none; /* Allow clicks to pass through to canvas */
  z-index: 10; /* Above canvas */
}

/* Pin button - hidden by default, shown on hover or when locked */
.pin-button {
  position: absolute; /* Positioned absolutely within pin-overlay */
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  border: 2px solid #ddd;
  color: #4b5563;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto; /* Button intercepts clicks */
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  opacity: 0; /* Hidden by default */
  visibility: hidden;
}

/* Show pin button when hovered or locked */
.pin-button.show {
  opacity: 1;
  visibility: visible;
}

.pin-button:hover {
  transform: scale(1.1);
  background-color: rgba(255, 255, 255, 1);
  border-color: var(--primary-color);
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

/* Locked state styling */
.pin-button.locked {
  background-color: #ef4444 !important;
  border-color: #dc2626 !important;
  color: #ffffff !important;
  box-shadow: 0 3px 8px rgba(220, 38, 38, 0.35);
}

.pin-button.locked:hover {
  background-color: #dc2626 !important;
  border-color: #b91c1c !important;
}