/* ============================================
   PO Upload Module Styles
   Scoped under #tab-po-upload to avoid conflicts
   ============================================ */

/* ---- Upload Wrapper ---- */
#tab-po-upload .po-upload-wrapper {
  max-width: 600px;
  margin: 40px auto;
  padding: 0 var(--space-4);
}

/* ---- Upload Zone ---- */
#tab-po-upload .po-upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-10) var(--space-8);
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--radius-lg);
  background: #fff;
  cursor: pointer;
  transition: border-color var(--transition-normal), background var(--transition-normal);
  text-align: center;
}

#tab-po-upload .po-upload-zone:hover {
  border-color: var(--color-primary);
  background: var(--color-gray-50);
}

#tab-po-upload .po-upload-zone-dragover {
  border-color: var(--color-primary);
  background: #fdf2f5;
  box-shadow: 0 0 0 4px rgba(139, 21, 56, 0.08);
}

#tab-po-upload .po-upload-icon {
  font-size: 48px;
  line-height: 1;
}

#tab-po-upload .po-upload-title {
  font-family: var(--font-family);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-800);
  margin: 0;
}

#tab-po-upload .po-upload-hint {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin: 0;
}

#tab-po-upload .po-file-name {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  background: var(--color-gray-100);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  margin-top: var(--space-2);
}

#tab-po-upload .po-upload-btn {
  margin-top: var(--space-3);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

#tab-po-upload .po-upload-btn:hover {
  background: var(--color-primary-hover);
}

/* ---- Parsing State ---- */
#tab-po-upload .po-parsing-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  padding: var(--space-10);
  text-align: center;
}

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

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

#tab-po-upload .po-parsing-text {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--color-gray-700);
  margin: 0;
}

#tab-po-upload .po-parsing-sub {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin: 0;
}

/* ---- Preview Screen ---- */
#tab-po-upload .po-preview {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

#tab-po-upload .po-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  gap: var(--space-4);
  flex-wrap: wrap;
}

#tab-po-upload .po-preview-title {
  font-family: var(--font-family);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-gray-900);
  margin: 0;
}

/* ---- Status Bar ---- */
#tab-po-upload .po-status-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

#tab-po-upload .po-status-bar strong {
  color: var(--color-gray-800);
}

/* ---- Match Banner ---- */
#tab-po-upload .po-match-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--color-success-light);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-success-dark);
  font-weight: 500;
}

#tab-po-upload .po-match-banner a {
  color: var(--color-success-dark);
  text-decoration: underline;
  cursor: pointer;
}

/* ---- Section Cards ---- */
#tab-po-upload .po-section-card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-sm);
}

#tab-po-upload .po-section-title {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-gray-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 var(--space-5) 0;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-gray-200);
}

/* ---- Form Grid ---- */
#tab-po-upload .po-form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

@media (max-width: 768px) {
  #tab-po-upload .po-form-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Form Group ---- */
#tab-po-upload .po-form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

#tab-po-upload .po-form-group label {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

#tab-po-upload .po-form-group input,
#tab-po-upload .po-form-group select {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-800);
  background: #fff;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
  box-sizing: border-box;
}

#tab-po-upload .po-form-group input:focus,
#tab-po-upload .po-form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 21, 56, 0.1);
}

/* ---- Low-confidence warning ---- */
#tab-po-upload .po-input-warning {
  border-color: var(--color-warning) !important;
  background: var(--color-warning-light);
}

#tab-po-upload .po-input-warning:focus {
  box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.2) !important;
}

/* ---- Line Items ---- */
#tab-po-upload .po-line-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

#tab-po-upload .po-line-item {
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

#tab-po-upload .po-line-item-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

#tab-po-upload .po-line-item-sku {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-gray-900);
}

/* ---- SKU match badge ---- */
#tab-po-upload .po-sku-match {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  background: var(--color-success-light);
  color: var(--color-success-dark);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

#tab-po-upload .po-sku-no-match {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  background: var(--color-danger-light);
  color: var(--color-danger-dark);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

/* ---- Amendment Badge ---- */
#tab-po-upload .po-amendment-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-3);
  background: var(--color-warning-light);
  color: var(--color-warning-dark);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---- Action Bar ---- */
#tab-po-upload .po-action-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  background: #fff;
  border-top: 1px solid var(--color-gray-200);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  margin-top: var(--space-6);
  position: sticky;
  bottom: 0;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
}

#tab-po-upload .po-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

#tab-po-upload .po-btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

#tab-po-upload .po-btn-primary:hover {
  background: var(--color-primary-hover);
}

#tab-po-upload .po-btn-secondary {
  background: #fff;
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

#tab-po-upload .po-btn-secondary:hover {
  background: var(--color-gray-100);
}

#tab-po-upload .po-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---- Error State ---- */
#tab-po-upload .po-error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-10);
  text-align: center;
}

#tab-po-upload .po-error-icon {
  font-size: 48px;
}

#tab-po-upload .po-error-title {
  font-family: var(--font-family);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-danger);
  margin: 0;
}

#tab-po-upload .po-error-message {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  margin: 0;
  max-width: 440px;
}

/* ---- Complete State ---- */
#tab-po-upload .po-complete-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-10);
  text-align: center;
}

#tab-po-upload .po-complete-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-success);
  color: #fff;
  font-size: 36px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

#tab-po-upload .po-complete-title {
  font-family: var(--font-family);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-success);
  margin: 0;
}

#tab-po-upload .po-complete-message {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  margin: 0;
  max-width: 440px;
}

#tab-po-upload .po-complete-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  min-width: 280px;
}

#tab-po-upload .po-complete-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
}

#tab-po-upload .po-complete-detail-label {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

#tab-po-upload .po-complete-detail-value {
  color: var(--color-gray-900);
  font-weight: 700;
}

#tab-po-upload .po-complete-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}

/* ---- Status dot ---- */
#tab-po-upload .po-status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-success);
  flex-shrink: 0;
}

/* ---- Confidence badge ---- */
#tab-po-upload .po-confidence-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  background: var(--color-warning-light);
  color: var(--color-warning-dark);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

/* ---- Match banner actions ---- */
#tab-po-upload .po-match-banner-actions {
  display: flex;
  gap: var(--space-2);
  margin-left: auto;
  flex-wrap: wrap;
}

#tab-po-upload .po-match-change-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

#tab-po-upload .po-match-change-label {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  font-weight: 500;
}

#tab-po-upload .po-match-change-inputs {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

#tab-po-upload .po-match-id-input {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  width: 120px;
}

/* ---- 2-column form grid ---- */
#tab-po-upload .po-form-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (max-width: 768px) {
  #tab-po-upload .po-form-grid-2 {
    grid-template-columns: 1fr;
  }
}

/* ---- Span 2 columns ---- */
#tab-po-upload .po-span-2 {
  grid-column: span 2;
}

@media (max-width: 768px) {
  #tab-po-upload .po-span-2 {
    grid-column: span 1;
  }
}

/* ---- Line item row 1: SKU + Description ---- */
#tab-po-upload .po-line-row-top {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

@media (max-width: 600px) {
  #tab-po-upload .po-line-row-top {
    grid-template-columns: 1fr;
  }
}

#tab-po-upload .po-field-sku {
  min-width: 0;
}

#tab-po-upload .po-field-desc {
  min-width: 0;
}

#tab-po-upload .po-field-desc input {
  font-weight: 500;
}

/* ---- Line item row 2: Qty, Price, Extended, Due Date ---- */
#tab-po-upload .po-line-row-numbers {
  display: grid;
  grid-template-columns: 80px 120px 120px 140px;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

@media (max-width: 600px) {
  #tab-po-upload .po-line-row-numbers {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---- Extracted details (4-column) ---- */
#tab-po-upload .po-extracted-fields {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  padding: var(--space-3);
  background: var(--color-gray-100);
  border-radius: var(--radius-md);
}

@media (max-width: 768px) {
  #tab-po-upload .po-extracted-fields {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---- Line notes ---- */
#tab-po-upload .po-line-notes textarea {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  width: 100%;
  box-sizing: border-box;
  resize: vertical;
  min-height: 56px;
}

#tab-po-upload .po-form-group textarea {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-800);
  background: #fff;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  width: 100%;
  box-sizing: border-box;
  resize: vertical;
  min-height: 80px;
}

/* ---- Readonly input ---- */
#tab-po-upload .po-input-readonly {
  background: var(--color-gray-100) !important;
  color: var(--color-gray-500) !important;
  cursor: not-allowed;
}

/* ---- SKU input (bold) ---- */
#tab-po-upload .po-sku-input {
  font-weight: 700;
  color: var(--color-primary);
}

/* ---- Item badge ---- */
#tab-po-upload .po-item-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-3);
  background: var(--color-gray-200);
  color: var(--color-gray-700);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---- Small buttons ---- */
#tab-po-upload .po-btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-sm);
}

#tab-po-upload .po-btn-lg {
  padding: var(--space-3) var(--space-7);
  font-size: var(--font-size-base);
}

#tab-po-upload .po-btn-success {
  background: var(--color-success);
  color: #fff;
  border-color: var(--color-success);
}

#tab-po-upload .po-btn-success:hover {
  opacity: 0.9;
}

#tab-po-upload .po-btn-danger {
  background: #fff;
  color: var(--color-danger);
  border-color: var(--color-danger);
}

#tab-po-upload .po-btn-danger:hover {
  background: var(--color-danger-light);
}

/* ---- Action bar left/right ---- */
#tab-po-upload .po-action-bar-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  flex-wrap: wrap;
}

#tab-po-upload .po-action-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

#tab-po-upload .po-action-total {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-gray-900);
}

#tab-po-upload .po-action-count {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

#tab-po-upload .po-action-sku-status {
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
}

#tab-po-upload .po-action-sku-ok {
  background: var(--color-success-light);
  color: var(--color-success-dark);
}

#tab-po-upload .po-action-sku-warn {
  background: var(--color-danger-light);
  color: var(--color-danger-dark);
}

/* ---- Import progress steps ---- */
#tab-po-upload .po-progress-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
  text-align: left;
  min-width: 260px;
}

#tab-po-upload .po-progress-step {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-gray-200);
}

#tab-po-upload .po-progress-step-active {
  color: var(--color-gray-800);
  border-left-color: var(--color-primary);
  background: var(--color-gray-50);
  font-weight: 600;
}

/* ---- Upload History ---- */
#tab-po-upload .po-history-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-4);
}

#tab-po-upload .po-history {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  box-shadow: var(--shadow-sm);
}

#tab-po-upload .po-history-title {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-gray-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 var(--space-4) 0;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-gray-200);
}

#tab-po-upload .po-history-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
}

#tab-po-upload .po-history-table th {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  color: var(--color-gray-500);
  font-weight: 600;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-gray-200);
}

#tab-po-upload .po-history-table td {
  padding: var(--space-3);
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
  vertical-align: middle;
}

#tab-po-upload .po-history-table tbody tr:hover {
  background: var(--color-gray-50);
}

#tab-po-upload .po-history-file {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}

#tab-po-upload .po-history-loading {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  text-align: center;
  padding: var(--space-4);
}

#tab-po-upload .po-status-badge {
  display: inline-block;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

#tab-po-upload .po-status-parsed {
  background: #dbeafe;
  color: #1e40af;
}

#tab-po-upload .po-status-imported {
  background: var(--color-success-light);
  color: var(--color-success-dark);
}

#tab-po-upload .po-status-approved {
  background: #d1fae5;
  color: #065f46;
}

#tab-po-upload .po-status-pending,
#tab-po-upload .po-status-parsing {
  background: var(--color-gray-100);
  color: var(--color-gray-600);
}

#tab-po-upload .po-status-error,
#tab-po-upload .po-status-failed {
  background: var(--color-danger-light);
  color: var(--color-danger-dark);
}

#tab-po-upload .po-history-actions {
  white-space: nowrap;
}

#tab-po-upload .po-text-muted {
  color: var(--color-gray-400);
  font-size: var(--font-size-xs);
}

#tab-po-upload .po-text-error {
  color: var(--color-danger);
  font-size: var(--font-size-xs);
  cursor: help;
}