.buy-page {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - var(--header-height) - 38px - 48px);
}

.buy-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.buy-page .is-hidden {
  display: none !important;
}

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

.buy-page-header .page-title {
  margin: 0;
  font-family: var(--font-bn);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: var(--leading-heading);
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.buy-page-header .page-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.buy-page-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.buy-page-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-brand-soft);
  color: var(--color-brand-dark);
  flex-shrink: 0;
  overflow: hidden;
}

.buy-page-icon svg {
  width: 22px;
  height: 22px;
}

/* ── Draft banner ── */
.buy-draft-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: var(--space-md);
  padding: 12px 16px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-lg);
}

.buy-draft-banner.is-hidden {
  display: none;
}

.buy-draft-banner-text {
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #1e40af;
}

.buy-draft-banner-actions {
  display: flex;
  gap: 8px;
}

.buy-draft-resume-btn,
.buy-draft-discard-btn {
  min-height: 36px;
  padding: 0 14px;
  font-size: var(--text-sm);
}

/* ── Meta Card ── */
.buy-meta-card {
  margin-top: var(--space-md);
  padding: 12px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.buy-meta-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-md);
}

.buy-meta-supplier-wrap {
  display: flex;
  flex-direction: column;
}

.buy-add-supplier-link {
  margin-top: 6px;
  font-family: var(--font-bn);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-brand-dark);
  background: none;
  border: none;
  padding: 0;
  text-align: left;
  cursor: pointer;
}

.buy-add-supplier-link:hover {
  text-decoration: underline;
}

.buy-field-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-deep);
}

.buy-field-input,
.buy-field-select {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-bn);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-surface);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.buy-field-input:read-only {
  background: #f9fafb;
  color: var(--color-text-secondary);
}

.buy-field-select {
  appearance: none;
  background: var(--color-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat right 12px center;
  padding-right: 32px;
}

.buy-field-input:focus,
.buy-field-select:focus {
  border-color: var(--color-active-border);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

/* ── Search Hero ── */
.buy-search-hero {
  margin-top: var(--space-md);
  padding: 12px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.buy-search-row {
  display: flex;
  align-items: stretch;
  gap: 10px;
}

.buy-search-box {
  flex: 1;
  min-width: 0;
  position: relative;
  min-height: 48px;
}

.buy-search-box svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.buy-search-box input {
  width: 100%;
  height: 48px;
  padding: 0 12px 0 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-md);
  font-family: var(--font-bn);
  color: var(--color-text-primary);
  background: var(--color-surface);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.buy-search-box input::placeholder {
  color: var(--color-text-muted);
}

.buy-search-box input:focus {
  border-color: var(--color-active-border);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

.buy-barcode-btn,
.buy-scan-btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: 64px;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-family: var(--font-bn);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  flex-shrink: 0;
}

.buy-barcode-btn svg,
.buy-scan-btn svg {
  width: 20px;
  height: 20px;
}

.buy-barcode-btn:hover,
.buy-scan-btn:hover {
  border-color: var(--color-brand);
  background: var(--color-brand-soft);
}

/* ── Two Column Layout ── */
.buy-main-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--space-md);
  margin-top: var(--space-md);
  align-items: start;
}

.buy-cart-column {
  min-width: 0;
}

/* ── Search ── */
.buy-search-wrap {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.buy-search-results {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 360px;
  overflow-y: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 50;
}

.buy-search-results.is-open {
  display: flex;
  flex-direction: column;
}

.buy-search-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 14px;
  border: none;
  border-bottom: 1px solid var(--color-border-light);
  background: var(--color-surface);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease;
}

.buy-search-item-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-brand-soft);
  color: var(--color-brand-dark);
  font-family: var(--font-bn);
  font-size: var(--text-md);
  font-weight: 700;
  flex-shrink: 0;
}

.buy-search-item-body {
  flex: 1;
  min-width: 0;
}

.buy-search-item-price-wrap {
  text-align: right;
  flex-shrink: 0;
}

.buy-search-item-price-label {
  display: block;
  font-family: var(--font-bn);
  font-size: 10px;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.buy-search-footer {
  padding: 10px 14px;
  border-top: 1px solid var(--color-border-light);
  background: #f9fafb;
}

.buy-search-add-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #2563eb;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.buy-search-add-link:hover {
  text-decoration: underline;
}

.buy-search-item:last-child {
  border-bottom: none;
}

.buy-search-item:hover,
.buy-search-item.is-highlighted {
  background: var(--color-brand-soft);
}

.buy-search-item-name {
  display: block;
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.buy-search-item-meta {
  display: block;
  font-family: var(--font-en);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.buy-search-item-price {
  font-family: var(--font-en);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-brand-dark);
  flex-shrink: 0;
}

.buy-search-empty {
  padding: 16px;
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
}

/* ── Toast ── */
.buy-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  padding: 10px 20px;
  background: var(--color-text-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 300;
  pointer-events: none;
}

.buy-toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ── Cart Section ── */
.buy-cart-section {
  margin-top: 0;
}

.buy-cart-head {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 12px;
  padding: 10px 16px;
  background: linear-gradient(180deg, #fffbeb, #fff8e1);
  border: 1px solid var(--color-border);
  border-bottom: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  font-family: var(--font-bn);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.buy-cart-head.is-hidden {
  display: none;
}

.buy-cart-head span:not(:first-child) {
  text-align: center;
  min-width: 72px;
}

.buy-cart-scroll {
  min-height: 0;
}

.buy-cart-head:not(.is-hidden) + .buy-cart-scroll {
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.buy-cart-head:not(.is-hidden) + .buy-cart-scroll .buy-cart-list {
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.buy-cart-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.buy-cart-head:not(.is-hidden) + .buy-cart-list {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  border-top: none;
}

.buy-cart-list.is-hidden {
  display: none;
}

.buy-add-more-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: 10px;
  padding: 12px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-brand-dark);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.buy-add-more-btn:hover {
  border-color: var(--color-brand);
  background: var(--color-brand-soft);
}

.buy-add-more-btn.is-hidden {
  display: none;
}

/* ── Summary Bar (mobile) ── */
.buy-summary-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 12px var(--space-md);
  padding-bottom: max(12px, env(safe-area-inset-bottom));
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
}

.buy-summary-bar.is-hidden {
  display: none;
}

.buy-summary-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.buy-summary-count {
  font-family: var(--font-bn);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.buy-summary-total {
  font-family: var(--font-en);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
}

.buy-summary-btn {
  flex-shrink: 0;
  min-height: var(--touch-min);
}

/* ── Cart cards ── */
.buy-cart-card {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border-light);
  background: var(--color-surface);
}

.buy-cart-card:last-child {
  border-bottom: none;
}

.buy-cart-card-product {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.buy-cart-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-brand-soft);
  color: var(--color-brand-dark);
  font-family: var(--font-bn);
  font-size: var(--text-md);
  font-weight: 700;
  flex-shrink: 0;
}

.buy-cart-card-info {
  min-width: 0;
}

.buy-cart-card-name {
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.buy-cart-card-code {
  font-family: var(--font-en);
  font-size: 11px;
  color: var(--color-text-muted);
}

.buy-cart-card-qty {
  display: flex;
  justify-content: center;
}

.buy-cart-card-price {
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: flex-end;
}

.buy-cart-price-input {
  width: 72px;
  height: 34px;
  padding: 0 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-en);
  font-size: var(--text-sm);
  font-weight: 600;
  text-align: right;
  outline: none;
}

.buy-cart-price-input:focus {
  border-color: var(--color-active-border);
  box-shadow: 0 0 0 2px var(--color-focus-ring);
}

.buy-cart-price-edit {
  display: inline-flex;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.buy-cart-price-edit svg {
  width: 14px;
  height: 14px;
}

.buy-cart-card-total {
  font-family: var(--font-en);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  text-align: right;
  min-width: 72px;
}

.buy-cart-card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
}

.buy-cart-input {
  width: 80px;
  height: 36px;
  padding: 0 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-en);
  font-size: var(--text-sm);
  text-align: center;
  outline: none;
}

.buy-cart-input:focus {
  border-color: var(--color-active-border);
  box-shadow: 0 0 0 2px var(--color-focus-ring);
}

.buy-cart-line-total {
  font-family: var(--font-en);
  font-weight: 600;
  color: var(--color-text-primary);
}

.buy-cart-card-main {
  flex: 1;
  min-width: 0;
}

.buy-cart-card-unit {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.buy-cart-card-price-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
}

.buy-cart-card-line-total {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: var(--text-sm);
}

.buy-cart-card-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  flex-shrink: 0;
}

.buy-qty-stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

.buy-qty-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-min);
  height: var(--touch-min);
  border: none;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
}

.buy-qty-btn:hover {
  background: var(--color-brand-soft);
}

.buy-qty-value {
  min-width: 36px;
  text-align: center;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: var(--text-sm);
}

.buy-cart-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-min);
  height: var(--touch-min);
  border-radius: var(--radius-sm);
  color: #ef4444;
  transition: background 0.2s ease;
}

.buy-cart-remove:hover {
  background: #fef2f2;
}

.buy-cart-remove svg {
  width: 16px;
  height: 16px;
}

/* ── Empty State ── */
.buy-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  padding: 24px var(--space-md);
  margin-top: var(--space-sm);
  background: linear-gradient(180deg, #fffbeb, #ffffff);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
}

.buy-empty-state.is-hidden {
  display: none;
}

.buy-empty-state-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--color-brand-muted);
  border-radius: 50%;
  margin-bottom: 10px;
  overflow: hidden;
  flex-shrink: 0;
}

.buy-empty-state-icon {
  width: 26px;
  height: 26px;
  color: var(--color-brand-dark);
}

.buy-empty-state-title {
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: var(--leading-heading);
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.buy-empty-state-subtext {
  font-family: var(--font-bn);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

/* ── Summary Panel ── */
.buy-summary-panel,
.buy-payment-panel {
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 12px;
  align-self: start;
  padding: var(--space-md);
  background: var(--color-brand-soft);
  border: 1px solid #fde68a;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.buy-summary-title {
  font-family: var(--font-bn);
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-text-deep);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(245, 184, 0, 0.35);
}

.buy-summary-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: var(--space-md);
}

.buy-summary-stat {
  padding: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
}

.buy-summary-stat-label {
  display: block;
  font-family: var(--font-bn);
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.buy-summary-stat-value {
  font-family: var(--font-en);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
}

.buy-summary-grand {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-sm) 0 var(--space-md);
  margin-bottom: var(--space-sm);
}

.buy-summary-grand-label {
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.buy-grand-total {
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-brand-dark);
  letter-spacing: -0.02em;
}

.buy-complete-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: var(--space-sm);
  min-height: 48px;
  font-family: var(--font-bn);
  font-weight: 700;
  font-size: var(--text-md);
}

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

.buy-draft-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.buy-draft-btn svg {
  width: 16px;
  height: 16px;
}

.buy-draft-btn:hover {
  border-color: var(--color-brand);
  background: #fff;
}

.buy-payment-collapse {
  margin-top: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
}

.buy-payment-collapse-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 14px;
  border: none;
  background: var(--color-surface);
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
}

.buy-payment-collapse-toggle svg {
  width: 18px;
  height: 18px;
  transition: transform 0.2s ease;
}

.buy-payment-collapse.is-open .buy-payment-collapse-toggle svg {
  transform: rotate(180deg);
}

.buy-payment-collapse-body {
  padding: 0 14px 14px;
  border-top: 1px solid var(--color-border-light);
}

.buy-payment-collapse-body[hidden] {
  display: none;
}

.buy-info-box {
  display: flex;
  gap: 10px;
  margin-top: var(--space-md);
  padding: 12px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
}

.buy-info-box svg {
  width: 18px;
  height: 18px;
  color: #2563eb;
  flex-shrink: 0;
  margin-top: 2px;
}

.buy-info-box p {
  font-family: var(--font-bn);
  font-size: var(--text-xs);
  color: #1e40af;
  line-height: 1.5;
  margin: 0;
}

.buy-page-footer-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: var(--space-lg);
  padding-bottom: var(--space-md);
  font-family: var(--font-bn);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.buy-page-footer-note svg {
  width: 14px;
  height: 14px;
}

.buy-payment-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-sm) 0 var(--space-md);
  margin-bottom: var(--space-sm);
  border-bottom: 1px dashed var(--color-border);
}

.buy-payment-hero-label {
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.buy-full-pay-btn {
  width: 100%;
  margin: 4px 0 8px;
  padding: 8px;
  border: 1px dashed var(--color-brand);
  border-radius: var(--radius-sm);
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-brand-dark);
  background: var(--color-brand-soft);
  cursor: pointer;
  transition: all 0.2s ease;
}

.buy-full-pay-btn:hover {
  background: #fff8e1;
  border-color: var(--color-brand-dark);
}

.buy-payment-title {
  font-family: var(--font-bn);
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-text-deep);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border-light);
}

.buy-payment-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.buy-payment-row label {
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.buy-payment-value {
  font-family: var(--font-en);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  text-align: right;
}

.buy-payment-value.is-due {
  color: #dc2626;
}

.buy-payment-input {
  width: 120px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-en);
  font-size: var(--text-sm);
  text-align: right;
  outline: none;
}

.buy-payment-input:focus {
  border-color: var(--color-active-border);
  box-shadow: 0 0 0 2px var(--color-focus-ring);
}

.buy-payment-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-md) 0;
}

.buy-payment-total .buy-payment-value {
  font-size: var(--text-md);
  color: var(--color-brand-dark);
}

.buy-payment-methods {
  display: flex;
  gap: 6px;
  margin-top: var(--space-md);
}

.buy-payment-tab {
  flex: 1;
  padding: 8px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-bn);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  cursor: pointer;
  transition: all 0.2s ease;
}

.buy-payment-tab:hover {
  border-color: var(--color-brand);
  background: var(--color-brand-soft);
}

.buy-payment-tab.is-active {
  background: var(--color-brand);
  border-color: var(--color-brand);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-brand);
}

/* ── Disabled button ── */
.buy-page .btn-brand:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: var(--shadow-sm);
}

.buy-page .btn-brand:disabled:hover {
  background: var(--color-brand);
  transform: none;
  box-shadow: var(--shadow-sm);
}

/* ── Modal ── */
.buy-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 250;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.buy-modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.buy-modal {
  width: 100%;
  max-width: 420px;
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.buy-modal-overlay.is-open .buy-modal {
  transform: scale(1);
}

.buy-modal-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-md);
  background: #dcfce7;
  border-radius: 50%;
  color: #16a34a;
}

.buy-modal-icon svg {
  width: 32px;
  height: 32px;
}

.buy-modal-title {
  font-family: var(--font-bn);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.buy-modal-text {
  font-family: var(--font-bn);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.buy-modal-summary {
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  background: #f9fafb;
  border-radius: var(--radius-md);
  text-align: left;
}

.buy-modal-summary-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 0;
  font-family: var(--font-bn);
  font-size: var(--text-sm);
}

.buy-modal-summary-row span:last-child {
  font-family: var(--font-en);
  font-weight: 600;
}

.buy-modal .btn-brand {
  width: 100%;
  justify-content: center;
}

/* ── Summary Bar (mobile fallback) — desktop hidden via min-width rule below ── */

@media (max-width: 992px) {
  .buy-main-grid {
    grid-template-columns: 1fr;
  }

  .buy-summary-panel,
  .buy-payment-panel {
    position: static;
  }

  .buy-page.has-cart {
    padding-bottom: 88px;
  }

  .buy-cart-head {
    display: none;
  }

  .buy-cart-card {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: var(--space-md);
  }

  .buy-cart-card-product {
    flex: 1 1 100%;
  }

  .buy-cart-card-qty,
  .buy-cart-card-price,
  .buy-cart-card-total {
    flex: 1;
    min-width: 0;
  }

  .buy-cart-card-actions {
    margin-left: auto;
  }

  .buy-summary-panel .buy-complete-btn,
  .buy-payment-panel .buy-complete-btn {
    display: none;
  }

  .buy-search-row {
    flex-wrap: wrap;
  }

  .buy-barcode-btn,
  .buy-scan-btn {
    flex: 1;
    min-width: 0;
  }
}

@media (min-width: 993px) {
  .buy-summary-bar {
    display: none !important;
  }

  .buy-page.has-cart {
    padding-bottom: 0;
  }
}

@media (max-width: 768px) {
  .buy-meta-grid {
    grid-template-columns: 1fr;
  }

  .buy-search-hero .buy-search-box {
    min-width: 0;
    width: 100%;
  }

  .buy-search-row .buy-search-wrap {
    flex: 1 1 100%;
  }

  .buy-draft-banner {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ── Desktop viewport fit (≥1200px) ── */
@media (min-width: 1200px) {
  .page-buy .main-wrapper {
    padding: 12px;
    overflow: hidden;
  }

  .page-buy .app-layout {
    min-height: calc(100vh - var(--header-height) - 38px);
    overflow: hidden;
  }

  .buy-page {
    --buy-viewport-h: calc(100vh - var(--header-height) - 38px - 24px);
    height: var(--buy-viewport-h);
    max-height: var(--buy-viewport-h);
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    min-height: 0;
  }

  .buy-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    gap: 8px;
  }

  .buy-page-header {
    margin-top: 0;
    flex-shrink: 0;
  }

  .buy-page-icon {
    width: 32px;
    height: 32px;
  }

  .buy-page-icon svg {
    width: 18px;
    height: 18px;
  }

  .buy-page-header .page-title {
    font-size: 18px;
  }

  .buy-draft-banner {
    margin-top: 0;
    padding: 8px 12px;
    flex-shrink: 0;
  }

  .buy-meta-card {
    margin-top: 0;
    padding: 10px 12px;
    flex-shrink: 0;
  }

  .buy-meta-grid {
    gap: 10px;
  }

  .buy-field-input,
  .buy-field-select {
    height: 36px;
  }

  .buy-field-label {
    margin-bottom: 4px;
    font-size: var(--text-xs);
  }

  .buy-search-hero {
    margin-top: 0;
    padding: 8px 10px;
    flex-shrink: 0;
  }

  .buy-search-box {
    min-height: 40px;
  }

  .buy-barcode-btn,
  .buy-scan-btn {
    min-width: 52px;
    padding: 4px 8px;
  }

  .buy-search-wrap {
    overflow: visible;
  }

  .buy-main-grid {
    display: grid;
    flex: 1;
    min-height: 0;
    margin-top: 0;
    align-items: stretch;
    grid-template-columns: 1fr 320px;
  }

  .buy-cart-column {
    display: flex;
    flex-direction: column;
    min-height: 0;
    height: 100%;
  }

  .buy-cart-section {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    height: 100%;
  }

  .buy-cart-head {
    flex-shrink: 0;
    padding: 8px 12px;
  }

  .buy-cart-scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .buy-cart-card {
    padding: 10px 12px;
  }

  .buy-cart-thumb {
    width: 36px;
    height: 36px;
    font-size: var(--text-sm);
  }

  .buy-add-more-btn {
    flex-shrink: 0;
    margin-top: 8px;
    padding: 10px;
  }

  .buy-empty-state {
    min-height: 0;
    padding: 16px;
    margin-top: 0;
  }

  .buy-empty-state-icon-wrap {
    width: 44px;
    height: 44px;
    margin-bottom: 8px;
  }

  .buy-summary-panel,
  .buy-payment-panel {
    position: sticky;
    top: 0;
    max-height: 100%;
    overflow-y: auto;
    align-self: stretch;
    padding: 12px;
  }

  .buy-summary-title {
    margin-bottom: 10px;
    padding-bottom: 8px;
    font-size: var(--text-base);
  }

  .buy-summary-stats {
    margin-bottom: 10px;
    gap: 6px;
  }

  .buy-summary-stat {
    padding: 6px 8px;
  }

  .buy-summary-stat-value {
    font-size: 16px;
  }

  .buy-payment-row {
    margin-bottom: 8px;
  }

  .buy-payment-input {
    height: 32px;
    width: 100px;
  }

  .buy-summary-grand {
    padding: 6px 0 10px;
    margin-bottom: 6px;
  }

  .buy-grand-total {
    font-size: 24px;
  }

  .buy-complete-btn {
    min-height: 44px;
    margin-top: 6px;
    font-size: var(--text-base);
  }

  .buy-draft-btn {
    min-height: 38px;
    margin-top: 6px;
    font-size: var(--text-xs);
  }

  .buy-payment-collapse {
    margin-top: 10px;
  }

  .buy-info-box {
    margin-top: 10px;
    padding: 8px 10px;
  }

  .buy-page-footer-note {
    margin-top: 0;
    padding-bottom: 0;
    flex-shrink: 0;
    font-size: 11px;
  }

  .buy-summary-bar {
    display: none !important;
  }

  .buy-page.has-cart {
    padding-bottom: 0;
  }
}