/* ==========================================================================
   ApexPOS - POS Terminal Styles
   ========================================================================== */

.pos-workspace {
  display: flex;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Left: Menu & Product Selection Grid (65%) */
.pos-menu-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  border-right: 1px solid var(--border-subtle);
  background-color: var(--bg-canvas);
  overflow: hidden;
}

/* Category Filter Rail */
.pos-top-controls {
  padding: 14px 18px 10px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pos-search-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pos-search-input-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.pos-search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  font-size: 1rem;
}

.pos-search-input {
  width: 100%;
  height: 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0 12px 0 36px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: border-color var(--trans-fast), box-shadow var(--trans-fast);
}

.pos-search-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.15);
}

.category-filter-rail {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.category-chip {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--trans-fast);
}

.category-chip:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.category-chip.active {
  background: var(--accent-amber);
  color: #000000;
  border-color: var(--accent-amber);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
}

/* Product Cards Grid */
.pos-products-container {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
  align-content: start;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  position: relative;
  transition: transform var(--trans-fast), border-color var(--trans-fast), box-shadow var(--trans-fast);
  min-height: 155px;
}

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

.product-card:active {
  transform: scale(0.98);
}

.product-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.product-category-tag {
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: none;
  color: var(--text-muted);
  letter-spacing: normal;
}

.product-stock-pill {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-weight: 600;
}

.product-stock-pill.in-stock {
  background: var(--bg-hover);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.product-stock-pill.low-stock {
  background: var(--accent-amber-glow);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.product-stock-pill.out-of-stock {
  background: var(--bg-hover);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.product-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 6px;
}

.product-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.3;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid var(--border-muted);
}

.product-price {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent-amber);
}

.product-add-badge {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-pill);
  background: var(--bg-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.1rem;
  border: 1px solid var(--border-subtle);
}

.product-card:hover .product-add-badge {
  background: var(--accent-amber);
  color: #000;
  border-color: var(--accent-amber);
}

/* Right Column: Sticky Cart & Bill Calculator (35%) */
.pos-cart-column {
  width: var(--cart-width);
  min-width: var(--cart-width);
  height: 100%;
  background-color: var(--bg-surface);
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border-subtle);
}

/* Order Header & Order Type Tabs */
.cart-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}

.cart-order-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.order-token-badge {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--accent-amber);
  background: var(--accent-amber-glow);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.order-type-switch {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--bg-canvas);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.order-type-btn {
  padding: 6px 8px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all var(--trans-fast);
}

.order-type-btn.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Cart Line Items List */
.cart-items-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cart-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  text-align: center;
  gap: 8px;
}

.cart-item-row {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color var(--trans-fast);
}

.cart-item-row:hover {
  border-color: var(--border-focus);
}

.cart-item-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.cart-item-title {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.cart-item-price {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.cart-item-modifiers {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.modifier-pill {
  background: var(--bg-hover);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.cart-item-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.cart-qty-stepper {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-hover);
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-muted);
}

.stepper-btn {
  width: 24px;
  height: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--trans-fast);
}

.stepper-btn:hover {
  background: var(--bg-active);
  color: var(--accent-amber);
}

.stepper-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  min-width: 20px;
  text-align: center;
}

.cart-item-remove-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
}

.cart-item-remove-btn:hover {
  color: var(--text-primary);
}

/* Calculation & Summary Footer */
.cart-summary-box {
  padding: 14px 16px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.825rem;
  color: var(--text-secondary);
}

.calc-row.total-row {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  padding-top: 6px;
  border-top: 1px dashed var(--border-subtle);
}

.total-amount {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: #ffffff;
  font-weight: 600;
}

/* Large Tender Action Buttons */
.cart-action-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
  gap: 8px;
  padding: 12px 16px 16px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-muted);
}

.cart-btn {
  height: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  transition: all var(--trans-fast);
}

.cart-btn.void {
  background: var(--bg-elevated);
  color: var(--text-secondary);
}

.cart-btn.void:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.cart-btn.hold {
  background: var(--bg-elevated);
  color: var(--text-secondary);
}

.cart-btn.hold:hover {
  background: var(--bg-hover);
  color: #ffffff;
  border-color: var(--border-focus);
}

.cart-btn.pay {
  background: var(--accent-amber);
  color: #000000;
  font-size: 0.88rem;
  font-weight: 700;
  border: 1px solid var(--accent-amber);
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.cart-btn.pay:hover {
  background: var(--accent-amber-dark);
  border-color: var(--accent-amber-dark);
  color: #000000;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

/* Mobile Back to Menu Button */
.cart-mobile-back-btn {
  display: none;
  background: var(--bg-hover);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  align-items: center;
  gap: 4px;
}

.cart-mobile-back-btn:hover {
  background: var(--bg-active);
  border-color: var(--border-focus);
}

/* Mobile Floating Cart Summary Bar */
.pos-mobile-cart-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 58px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-focus);
  padding: 8px 14px;
  padding-bottom: calc(8px + var(--safe-area-bottom));
  z-index: 60;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.45);
}

.pos-mobile-cart-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pos-mobile-cart-badge {
  background: var(--accent-amber);
  color: #000;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.74rem;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
}

.pos-mobile-cart-total {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
}

.pos-mobile-cart-btn {
  background: var(--accent-amber);
  color: #000000;
  border: 1px solid var(--accent-amber);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
  transition: all var(--trans-fast);
}

.pos-mobile-cart-btn:hover, .pos-mobile-cart-btn:active {
  background: var(--accent-amber-dark);
  border-color: var(--accent-amber-dark);
  color: #000000;
  transform: translateY(-1px);
}

/* ==========================================================================
   Responsive POS Terminal Media Queries
   ========================================================================== */

@media (max-width: 860px) {
  .pos-workspace {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
  }

  .pos-menu-column {
    width: 100%;
    border-right: none;
    padding-bottom: 64px; /* Space for the bottom cart bar */
  }

  .pos-top-controls {
    padding: 10px 12px;
    gap: 8px;
  }

  .pos-search-row {
    gap: 6px;
    flex-wrap: wrap;
  }

  .pos-search-input-wrap {
    min-width: 160px;
  }

  .pos-search-input {
    height: 38px;
    font-size: 0.86rem;
  }

  .category-filter-rail {
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
  }
  .category-filter-rail::-webkit-scrollbar {
    display: none;
  }

  .category-chip {
    padding: 6px 12px;
    font-size: 0.8rem;
  }

  .pos-products-container {
    padding: 10px 12px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding-bottom: 74px; /* clearance for sticky cart trigger */
  }

  .product-card {
    padding: 10px;
    min-height: 140px;
    min-width: 0;
  }

  .product-name {
    font-size: 0.88rem;
    margin-bottom: 4px;
    word-break: break-word;
  }

  .product-desc {
    font-size: 0.72rem;
    -webkit-line-clamp: 2;
    margin-bottom: 8px;
  }

  .product-price {
    font-size: 0.92rem;
  }

  .product-add-badge {
    width: 26px;
    height: 26px;
    font-size: 1rem;
  }

  /* Cart Column Transforms into Mobile Drawer / Sheet */
  .pos-cart-column {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    min-width: 100%;
    z-index: 120;
    transform: translateY(100%);
    transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.75);
    background: var(--bg-surface);
    padding-top: var(--safe-area-top);
  }

  .pos-cart-column.mobile-open {
    transform: translateY(0);
  }

  .cart-mobile-back-btn {
    display: inline-flex;
  }

  .pos-mobile-cart-bar {
    display: flex;
  }
}

@media (max-width: 480px) {
  .pos-products-container {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    padding: 8px;
    padding-bottom: 74px;
  }

  .product-card {
    padding: 8px;
    min-height: 125px;
    min-width: 0;
  }

  .product-category-tag {
    font-size: 0.65rem;
  }

  .product-stock-pill {
    font-size: 0.6rem;
    padding: 1px 4px;
  }

  .product-name {
    font-size: 0.82rem;
  }

  .product-desc {
    display: none; /* Hide product description on extra small screens for compact clean cards */
  }

  .product-price {
    font-size: 0.86rem;
  }

  .cart-action-grid {
    padding: 10px 12px calc(14px + var(--safe-area-bottom));
    gap: 6px;
  }

  .cart-btn {
    height: 44px;
    font-size: 0.8rem;
  }
}