/* POS Layout Shell */
.pos-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 20px;
  height: calc(100vh - 120px);
  min-height: 500px;
  overflow: hidden;
}

.pos-main-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
}

.pos-sidebar-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border-left: 1px solid var(--border-color);
  padding-left: 20px;
}

/* Category Tabs */
.pos-categories {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.pos-category-tab {
  padding: 8px 16px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.pos-category-tab:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.pos-category-tab.active {
  background-color: var(--primary);
  color: var(--text-on-accent);
  border-color: var(--primary);
}

/* Product Cards Grid */
.pos-products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  overflow-y: auto;
  flex-grow: 1;
  padding: 4px;
}

.pos-product-card {
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 140px;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  user-select: none;
  position: relative;
}

.pos-product-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.pos-product-name {
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pos-product-sku {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.pos-product-price {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary);
  margin-top: 8px;
}

.pos-product-stock {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
}

.pos-product-card.out-of-stock {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--bg-tertiary);
}

.pos-product-card.out-of-stock:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--border-color);
}

/* Cart / Ticket Container */
.pos-cart {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.pos-cart-items {
  flex-grow: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 4px;
  margin-bottom: 12px;
}

.pos-cart-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

.pos-item-info {
  flex-grow: 1;
  max-width: 180px;
}

.pos-item-title {
  font-size: 0.85rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pos-item-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.pos-item-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pos-qty-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  cursor: pointer;
  user-select: none;
}

.pos-qty-btn:hover {
  background-color: var(--bg-tertiary);
}

.pos-item-qty {
  font-size: 0.85rem;
  font-weight: 600;
  width: 20px;
  text-align: center;
}

.pos-item-price {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-align: right;
  min-width: 70px;
}

/* Totals Summary */
.pos-totals {
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pos-totals-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.pos-totals-row.grand-total {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  border-top: 1px dashed var(--border-color);
  padding-top: 8px;
  margin-top: 4px;
}

/* POS Search Bar Scan Focus Glow */
.scan-focus {
  animation: borderGlow 2s infinite ease-in-out;
}

@keyframes borderGlow {
  0%, 100% { border-color: var(--border-color); box-shadow: none; }
  50% { border-color: var(--primary); box-shadow: 0 0 8px var(--primary-glow); }
}

/* Payment selection grid */
.payment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.payment-btn {
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.payment-btn:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.payment-btn.active {
  border-color: var(--primary);
  background-color: var(--primary-light);
  color: var(--primary);
}

[data-theme="dark"] .payment-btn.active {
  background-color: var(--primary-glow);
}

/* Print Receipt Styles (virtual print modal template) */
.receipt-paper {
  background-color: white;
  color: black;
  font-family: 'Courier New', Courier, monospace;
  padding: 20px;
  width: 320px;
  margin: 0 auto;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  border: 1px solid #ddd;
}

.receipt-header {
  text-align: center;
  margin-bottom: 15px;
}

.receipt-store {
  font-weight: bold;
  font-size: 1.1rem;
}

.receipt-meta {
  font-size: 0.75rem;
  margin-top: 4px;
}

.receipt-divider {
  border-top: 1px dashed black;
  margin: 10px 0;
}

.receipt-items {
  font-size: 0.8rem;
  width: 100%;
}

.receipt-item-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}

.receipt-totals {
  font-size: 0.8rem;
  margin-top: 8px;
}

.receipt-totals-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2px;
}

.receipt-totals-row.bold {
  font-weight: bold;
  font-size: 0.95rem;
}

.receipt-footer {
  text-align: center;
  font-size: 0.75rem;
  margin-top: 15px;
}

/* Responsive adjustments for POS */
@media (max-width: 1024px) {
  .pos-layout {
    grid-template-columns: 1fr 320px;
    gap: 16px;
  }
}

@media (max-width: 768px) {
  .pos-layout {
    grid-template-columns: 1fr;
    grid-template-rows: 50vh auto; /* Stack them with equal-ish heights or let content push */
    height: auto;
    min-height: 100vh;
    overflow: visible;
    gap: 16px;
  }
  
  .pos-main-panel {
    overflow: hidden;
  }
  
  .pos-sidebar-panel {
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding-left: 0;
    padding-top: 16px;
    height: auto;
    min-height: 400px;
  }
  
  .pos-products-grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  }
  
  .payment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .pos-products-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  }
}