.editor-section {
  background: #fff;
  border-radius: var(--border-radius);
  padding: 24px;
  margin-top: 20px;
  box-shadow: var(--shadow);
}

.editor-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
}

.preview-container {
  min-width: 0;
}

.preview-wrapper {
  margin-bottom: 16px;
}

.preview-compare {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.preview-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
}

.preview-label {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-weight: 500;
}

.checkerboard-bg {
  background-image:
    linear-gradient(45deg, #e5e7eb 25%, transparent 25%),
    linear-gradient(-45deg, #e5e7eb 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #e5e7eb 75%),
    linear-gradient(-45deg, transparent 75%, #e5e7eb 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
  border-radius: 4px;
  overflow: hidden;
  max-width: 100%;
}

.checkerboard-bg canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

.preview-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--gray-500);
}

.controls-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.control-section {
  background: var(--gray-50);
  border-radius: 8px;
  padding: 16px;
}

.control-section h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 12px;
}

.control-group {
  margin-bottom: 12px;
}

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

.control-label {
  display: block;
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-bottom: 6px;
}

.color-picker-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}

.color-picker-wrapper span {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-family: monospace;
}

.range-slider {
  width: 100%;
  accent-color: var(--primary);
}

.text-input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 0.9rem;
}

.text-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.2);
}

.radio-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-size: 0.85rem;
}

.radio-option input[type="radio"] {
  accent-color: var(--primary);
}

.checkbox-option {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 0.85rem;
}

.checkbox-option input[type="checkbox"] {
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
}

.download-section {
  margin-top: 8px;
}

.download-section .btn {
  width: 100%;
}

/* Advanced Section */
.advanced-section {
  border: 1px dashed var(--gray-300);
  background: var(--gray-50);
}

.advanced-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.toggle-icon {
  transition: transform 0.2s;
}

.advanced-content:not(.hidden) ~ .advanced-toggle .toggle-icon {
  transform: rotate(180deg);
}

.divider {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: 12px 0;
}

/* Signature Controls */
.signature-controls,
.stamp-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.signature-preview,
.stamp-preview {
  margin-top: 8px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.signature-preview img,
.stamp-preview img {
  max-height: 60px;
  max-width: 120px;
  object-fit: contain;
}

/* Signature Draw Modal */
.signature-draw-modal,
.stamp-creator-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
}

.modal-content {
  position: relative;
  background: #fff;
  border-radius: var(--border-radius);
  padding: 24px;
  max-width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-800);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--gray-500);
  padding: 4px;
}

.modal-close:hover {
  color: var(--gray-800);
}

#signatureCanvas {
  border: 2px solid var(--gray-300);
  border-radius: 4px;
  cursor: crosshair;
  background: #fff;
  display: block;
  margin: 0 auto;
  max-width: 100%;
  touch-action: none;
}

.signature-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 12px;
}

/* Stamp Creator */
.stamp-creator-controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stamp-preview-area {
  display: flex;
  justify-content: center;
  padding: 16px;
}

#stampCanvas {
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  background: #fff;
}

/* Position Inputs */
.signature-position-inputs,
.stamp-position-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.pos-input {
  width: 70px;
  padding: 6px 8px;
  border: 1px solid var(--gray-300);
  border-radius: 4px;
  font-size: 0.85rem;
}

/* Progress Section */
.progress-section {
  background: #fff;
  border-radius: var(--border-radius);
  padding: 48px 24px;
  margin-top: 20px;
  box-shadow: var(--shadow);
  text-align: center;
}

.progress-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

#progressText {
  font-size: 1rem;
  color: var(--gray-600);
}

.progress-bar {
  width: 100%;
  max-width: 400px;
  height: 8px;
  background: var(--gray-200);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 4px;
  transition: width 0.3s;
}

/* Page Navigation */
.preview-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

/* Preview Actions */
.preview-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Batch List */
.batch-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 200px;
  overflow-y: auto;
  padding: 4px;
}

.batch-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 0.85rem;
}

.batch-item .file-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-600);
}

.batch-item .file-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.batch-item .file-size {
  color: var(--gray-500);
  font-size: 0.8rem;
}

.batch-item .file-remove {
  cursor: pointer;
  background: none;
  border: none;
  color: var(--gray-400);
  padding: 4px;
}

.batch-item .file-remove:hover {
  color: var(--primary);
}

/* Info Grid */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.info-item {
  padding: 16px;
  background: var(--gray-50);
  border-radius: 8px;
}

.info-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 8px;
}

.info-item p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 900px) {
  .editor-layout {
    grid-template-columns: 1fr;
  }

  .preview-compare {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .controls-container {
    gap: 12px;
  }

  .control-section {
    padding: 12px;
  }

  .signature-controls,
  .stamp-controls {
    flex-direction: column;
  }

  .signature-position-inputs,
  .stamp-position-inputs {
    flex-wrap: wrap;
  }

  .preview-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page-nav {
    justify-content: center;
  }

  .modal-content {
    padding: 16px;
    margin: 16px;
  }
}