feat: implement mobile-responsive portrait mode layout for PoS screens with tab-based navigation

.gitignore

@@ -1,6 +1,42 @@
-*.pyc
+# Python
-*~
 __pycache__/
-.DS_Store
+*.py[cod]
+*.pyo
+*.pyd
+*.egg-info/
+*.egg
+*.pyc
+
+# Odoo
+.odoo_module_info
+
+# Editor / IDE
 .vscode/
 .idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V500
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Node / npm (if any frontend tooling)
+node_modules/
+npm-debug.log*
+yarn-error.log
+
+# Logs
+*.log
+
+# Git merge artifacts
+*.orig
+*.rej
+
+# Compiled / generated assets (Odoo builds these at runtime)
+/static/description/index.html

README.md

@@ -1,27 +1,131 @@
 # POS UI Optimization
 
-This Odoo 19 module optimizes the Point of Sale (POS) user interface for low-RAM devices (e.g., Android tablets with 2GB RAM).
+**Odoo 19 | Custom Addon**
+
+Optimizes the Point of Sale UI for resource-constrained devices and adds a **switchable portrait display mode** designed for 6-inch touchscreen terminals.
+
+---
 
 ## Features
 
-- **Product List Incremental Loading**: Renders products in batches of 40 as you scroll, significantly reducing memory usage in categories with many products.
+### 1. Incremental Product Rendering
-- **Order Cart Incremental Loading**: Efficiently handles large orders by rendering order lines incrementally as you scroll through the cart.
+Prevents low-RAM devices from freezing when the product catalogue is large.
-- **Improved Responsiveness**: Keeps the browser DOM light and prevents "white blank" screens caused by memory exhaustion.
+
-- **Legacy Browser Support**: Designed without modern ES2020 JavaScript syntax (like optional chaining `?.`) to ensure compatibility with older Android browser engines found on specific legacy POS hardware.
+- Only **40 products** are rendered on initial load
+- More products load automatically as the user scrolls down
+- Resets the counter when the search word or category changes
+
+### 2. Incremental Order Line Rendering
+Same approach for the order/cart display.
+
+- Only **20 order lines** rendered initially
+- Scrolling loads more lines progressively
+- Ensures the selected line is always visible (expands count if needed)
+
+### 3. Portrait Mode (6-inch Display)
+
+A dedicated compact layout for portrait-orientation small screens. Designed for devices like 6-inch Android POS terminals where the standard Odoo two-column layout clutters the screen.
+
+#### Layout
+
+```
+┌──────────────────────────────┐
+│  Navbar (compact)            │
+├──────────────────────────────┤
+│                              │
+│  Active tab pane:            │
+│  Products / Cart / Numpad    │
+│                              │
+├──────────────────────────────┤
+│  TOTAL: Rp X,XXX  [Send][Pay]│  ← always visible
+├──────────────────────────────┤
+│  [Products]  [Cart]  [Numpad]│  ← bottom tab bar
+└──────────────────────────────┘
+```
+
+#### Key Differences from Standard Mode
+
+| Feature | Standard | Portrait |
+|---|---|---|
+| Layout | Two-column (order left, products right) | Single pane with bottom tabs |
+| Product grid | `auto-fill minmax(115px)` | Fixed 2 columns |
+| Product images | Full aspect ratio | Capped at 90px height |
+| Numpad | Shown inline in left pane | Dedicated "Numpad" tab |
+| Pay/Send | Inside left pane action pad | Always-visible bottom strip |
+| Navbar | Full labels | Compact with smaller padding |
+
+#### Auto-Activation
+
+Portrait mode **auto-activates** when the browser viewport width is **< 400 px** on first load. A manual override is always available via the burger menu (☰ → Switch to Portrait/Standard Mode). The choice is saved to `localStorage`.
+
+#### Send Button Behavior
+
+The **Send** button appears only when:
+1. The POS is in restaurant mode (`module_pos_restaurant = True`)
+2. At least one **Preparation Category** is configured in POS → Kitchen Printers settings
+3. The current order has unsent changes (`nbrOfChanges > 0`)
+4. The order is not a direct sale / refund
+
+This mirrors Odoo's standard restaurant `swapButton` logic exactly.
+
+---
 
 ## Installation
 
-1. Place the `pos_ui_optimization` folder in your Odoo custom addons directory.
+1. Copy the `pos_ui_optimization` folder into your `customaddons` directory
-2. Restart your Odoo server.
+2. Restart the Odoo server
-3. In Odoo, activate **Developer Mode**.
+3. Go to **Apps** → search for **POS UI Optimization** → Install
-4. Go to **Apps** -> **Update Apps List**.
+4. Reload your POS session
-5. Search for `POS UI Optimization`.
-6. Click **Install**.
 
-## Technical Details
+## Upgrade
 
-This module uses Odoo's JavaScript patching mechanism (`patch` from `@web/core/utils/patch`) to extend the core POS components:
+```bash
-- `ProductScreen`: Adds `displayedProductsCount` state via `owl`'s `useEffect` and an overridden `onScroll` hook to the product container.
+./odoo-bin -u pos_ui_optimization -d <your_database>
-- `OrderDisplay`: Adds `displayedCount` state and a scroll listener to the combo sorted order lines container.
+```
 
-No core Odoo files are modified.
+---
+
+## Compatibility
+
+| Item | Value |
+|---|---|
+| Odoo version | 19.0 |
+| Depends on | `point_of_sale` |
+| Compatible with | `pos_restaurant`, `pos_custom_access`, `pos_kitchen_printer` |
+| License | LGPL-3 |
+
+---
+
+## File Structure
+
+```
+pos_ui_optimization/
+├── __manifest__.py
+├── README.md
+├── static/
+│   └── src/
+│       ├── app/
+│       │   ├── components/
+│       │   │   ├── navbar/
+│       │   │   │   ├── navbar_patch.js       # Display Mode toggle in burger menu
+│       │   │   │   └── navbar_patch.xml
+│       │   │   └── order_display/
+│       │   │       ├── order_display_patch.js # Incremental order line rendering
+│       │   │       └── order_display_patch.xml
+│       │   ├── screens/
+│       │   │   └── product_screen/
+│       │   │       ├── portrait_mode_patch.js # Tab state (products/cart/numpad)
+│       │   │       ├── portrait_screen.xml    # Portrait layout XML patch
+│       │   │       ├── product_screen_patch.js # Incremental product rendering
+│       │   │       └── product_screen_patch.xml
+│       │   └── services/
+│       │       └── portrait_mode.js           # Auto-detect + localStorage service
+│       └── scss/
+│           └── portrait.scss                  # All portrait CSS (scoped to .pos-portrait)
+```
+
+---
+
+## Author
+
+**Suherdy Yacob**

__manifest__.py

@@ -8,10 +8,21 @@
     'data': [],
     'assets': {
         'point_of_sale._assets_pos': [
+            # Incremental rendering patches (existing)
             'pos_ui_optimization/static/src/app/components/order_display/order_display_patch.js',
             'pos_ui_optimization/static/src/app/components/order_display/order_display_patch.xml',
             'pos_ui_optimization/static/src/app/screens/product_screen/product_screen_patch.js',
             'pos_ui_optimization/static/src/app/screens/product_screen/product_screen_patch.xml',
+            # Portrait mode — service must load first
+            'pos_ui_optimization/static/src/app/services/portrait_mode.js',
+            # Navbar display-mode toggle
+            'pos_ui_optimization/static/src/app/components/navbar/navbar_patch.js',
+            'pos_ui_optimization/static/src/app/components/navbar/navbar_patch.xml',
+            # ProductScreen portrait tab state + layout
+            'pos_ui_optimization/static/src/app/screens/product_screen/portrait_mode_patch.js',
+            'pos_ui_optimization/static/src/app/screens/product_screen/portrait_screen.xml',
+            # Portrait CSS (must load after all XML patches)
+            'pos_ui_optimization/static/src/scss/portrait.scss',
         ],
     },
     'installable': True,

static/src/app/components/navbar/navbar_patch.js

@@ -0,0 +1,15 @@
+/** @odoo-module **/
+
+import { Navbar } from "@point_of_sale/app/components/navbar/navbar";
+import { patch } from "@web/core/utils/patch";
+import { useService } from "@web/core/utils/hooks";
+
+patch(Navbar.prototype, {
+    setup() {
+        super.setup();
+        this.portraitMode = useService("portrait_mode");
+    },
+    toggleDisplayMode() {
+        this.portraitMode.toggle();
+    },
+});

static/src/app/components/navbar/navbar_patch.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<templates id="template" xml:space="preserve">
+    <t t-inherit="point_of_sale.Navbar" t-inherit-mode="extension" owl="1">
+        <!-- Insert "Display Mode" toggle before the last DropdownItem (Close Register) -->
+        <xpath expr="//DropdownItem[last()]" position="before">
+            <DropdownItem onSelected="() => this.toggleDisplayMode()">
+                <t t-if="portraitMode.isPortrait">
+                    <i class="fa fa-fw fa-desktop me-1 text-primary"/>
+                    <span>Switch to Standard Mode</span>
+                </t>
+                <t t-else="">
+                    <i class="fa fa-fw fa-mobile me-1 text-success"/>
+                    <span>Switch to Portrait Mode</span>
+                </t>
+            </DropdownItem>
+        </xpath>
+    </t>
+</templates>

static/src/app/screens/product_screen/portrait_mode_patch.js

@@ -0,0 +1,22 @@
+/** @odoo-module **/
+
+import { ProductScreen } from "@point_of_sale/app/screens/product_screen/product_screen";
+import { patch } from "@web/core/utils/patch";
+import { useState } from "@odoo/owl";
+import { useService } from "@web/core/utils/hooks";
+
+patch(ProductScreen.prototype, {
+    setup() {
+        super.setup();
+        this.portraitMode = useService("portrait_mode");
+        this.portraitState = useState({ tab: "products" });
+    },
+
+    get portraitTab() {
+        return this.portraitState.tab;
+    },
+
+    switchPortraitTab(tab) {
+        this.portraitState.tab = tab;
+    },
+});

static/src/app/screens/product_screen/portrait_screen.xml

@@ -0,0 +1,107 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<templates id="template" xml:space="preserve">
+    <t t-inherit="point_of_sale.ProductScreen" t-inherit-mode="extension" owl="1">
+
+        <!--
+            1. Stamp portrait tab classes onto the root product-screen div.
+               CSS uses these classes to show/hide left vs right pane.
+        -->
+        <xpath expr="//div[hasclass('product-screen')]" position="attributes">
+            <attribute name="t-att-class">{
+                'is-portrait': portraitMode.isPortrait,
+                'portrait-tab-products': portraitMode.isPortrait and portraitTab === 'products',
+                'portrait-tab-cart': portraitMode.isPortrait and portraitTab === 'cart',
+                'portrait-tab-numpad': portraitMode.isPortrait and portraitTab === 'numpad',
+            }</attribute>
+        </xpath>
+
+        <!--
+            2. Inject the portrait footer (pay strip + tab bar) at the bottom
+               of the product-screen div. Only rendered in portrait mode.
+               ActionpadWidget from pos_custom_access is NOT duplicated here —
+               we reuse the existing one inside .leftpane (already patched).
+        -->
+        <xpath expr="//div[hasclass('product-screen')]" position="inside">
+            <div t-if="portraitMode.isPortrait" class="portrait-footer">
+
+                <!-- Pay strip: always visible, shows order total + action buttons -->
+                <div class="portrait-pay-strip d-flex align-items-center gap-2 px-3 py-2">
+                    <div class="d-flex flex-column flex-grow-1 min-w-0">
+                        <small class="text-muted lh-1" style="font-size:0.68rem;letter-spacing:.03em;">TOTAL</small>
+                        <strong class="portrait-total-amount text-truncate lh-1 mt-1" t-esc="currentOrder.isEmpty() ? '—' : total"/>
+                    </div>
+
+                    <!--
+                        Send button logic mirrors pos_restaurant's swapButton:
+                          swapButton = module_pos_restaurant AND preparationCategories.size > 0
+                          Send shows  = swapButton AND !isDirectSale AND nbrOfChanges > 0
+                    -->
+                    <button
+                        t-if="swapButton and !currentOrder.isEmpty() and !currentOrder.isDirectSale and nbrOfChanges"
+                        class="btn btn-primary portrait-send-btn"
+                        t-on-click="() => doSubmitOrder.call()"
+                        t-att-disabled="doSubmitOrder.status === 'loading'">
+                        <i class="fa fa-paper-plane me-1"/>Send
+                    </button>
+
+                    <!--
+                        Pay button:
+                        - In restaurant+swapButton mode: secondary when there are changes to send, primary when all sent
+                        - In non-restaurant mode: always primary (gated by pos.canPay)
+                    -->
+                    <button
+                        t-if="!currentOrder.isEmpty() and pos.canPay and !pos.scanning"
+                        class="btn portrait-pay-btn"
+                        t-att-class="{
+                            'btn-primary': !swapButton or !nbrOfChanges,
+                            'btn-secondary': swapButton and nbrOfChanges,
+                        }"
+                        t-on-click="() => pos.pay()">
+                        <i class="fa fa-credit-card me-1"/>Pay
+                    </button>
+                    <button
+                        t-elif="!currentOrder.isEmpty()"
+                        class="btn btn-secondary portrait-pay-btn"
+                        disabled="disabled">
+                        <i class="fa fa-credit-card me-1"/>Pay
+                    </button>
+                    <button
+                        t-else=""
+                        class="btn btn-outline-secondary portrait-pay-btn"
+                        disabled="disabled">
+                        <i class="fa fa-credit-card me-1"/>Pay
+                    </button>
+                </div>
+
+
+
+                <!-- Bottom tab bar -->
+                <div class="portrait-tab-bar d-flex">
+                    <button
+                        class="portrait-tab-btn flex-fill"
+                        t-att-class="{'active': portraitTab === 'products'}"
+                        t-on-click="() => this.switchPortraitTab('products')">
+                        <i class="fa fa-th fa-lg"/>
+                        <span>Products</span>
+                    </button>
+                    <button
+                        class="portrait-tab-btn flex-fill position-relative"
+                        t-att-class="{'active': portraitTab === 'cart'}"
+                        t-on-click="() => this.switchPortraitTab('cart')">
+                        <i class="fa fa-shopping-cart fa-lg"/>
+                        <span>Cart</span>
+                        <span t-if="!currentOrder.isEmpty()" class="portrait-badge" t-esc="items"/>
+                    </button>
+                    <button
+                        class="portrait-tab-btn flex-fill"
+                        t-att-class="{'active': portraitTab === 'numpad'}"
+                        t-on-click="() => this.switchPortraitTab('numpad')">
+                        <i class="fa fa-keyboard-o fa-lg"/>
+                        <span>Numpad</span>
+                    </button>
+                </div>
+            </div>
+        </xpath>
+
+    </t>
+</templates>

static/src/app/services/portrait_mode.js

@@ -0,0 +1,63 @@
+/** @odoo-module **/
+
+import { reactive } from "@odoo/owl";
+import { registry } from "@web/core/registry";
+
+const AUTO_BREAKPOINT = 400;
+const STORAGE_KEY = "posDisplayMode";
+
+const portraitModeService = {
+    dependencies: [],
+    start() {
+        // Determine initial mode: manual preference takes priority, then auto-detect
+        const stored = localStorage.getItem(STORAGE_KEY);
+        let isPortrait;
+        if (stored === "portrait") {
+            isPortrait = true;
+        } else if (stored === "standard") {
+            isPortrait = false;
+        } else {
+            // No manual preference — auto-detect from screen width
+            isPortrait = window.innerWidth < AUTO_BREAKPOINT;
+        }
+
+        const state = reactive({ isPortrait });
+
+        const applyClass = () => {
+            document.body.classList.toggle("pos-portrait", state.isPortrait);
+        };
+
+        applyClass();
+
+        // Auto-switch on resize (only when no manual preference is stored)
+        let resizeTimer;
+        window.addEventListener("resize", () => {
+            clearTimeout(resizeTimer);
+            resizeTimer = setTimeout(() => {
+                if (!localStorage.getItem(STORAGE_KEY)) {
+                    const autoPortrait = window.innerWidth < AUTO_BREAKPOINT;
+                    if (state.isPortrait !== autoPortrait) {
+                        state.isPortrait = autoPortrait;
+                        applyClass();
+                    }
+                }
+            }, 200);
+        });
+
+        return {
+            get isPortrait() {
+                return state.isPortrait;
+            },
+            toggle() {
+                state.isPortrait = !state.isPortrait;
+                localStorage.setItem(
+                    STORAGE_KEY,
+                    state.isPortrait ? "portrait" : "standard"
+                );
+                applyClass();
+            },
+        };
+    },
+};
+
+registry.category("services").add("portrait_mode", portraitModeService);

static/src/scss/portrait.scss

@@ -0,0 +1,331 @@
+/**
+ * Portrait Mode — POS UI for 6-inch portrait devices
+ * All rules scoped under .pos-portrait to avoid affecting standard mode.
+ */
+
+/* ============================================================
+   NAVBAR — compact, icon-friendly
+   ============================================================ */
+.pos-portrait {
+    .pos-topheader {
+        min-height: 44px !important;
+        padding: 4px 6px !important;
+
+        .btn {
+            padding: 5px 10px !important;
+            font-size: 0.82rem !important;
+        }
+
+        // Shrink search input width
+        .o_searchview {
+            max-width: 120px;
+        }
+
+        // Order tabs: shorten
+        .order-tabs {
+            max-width: 120px;
+            overflow: hidden;
+        }
+    }
+
+    /* ============================================================
+       PRODUCT SCREEN ROOT — vertical single-pane
+       ============================================================ */
+    .product-screen {
+        flex-direction: column !important;
+        position: relative !important;  // anchor for absolute footer
+
+        /* ---- LEFT PANE (Cart / Numpad) ---- */
+        .leftpane {
+            width: 100% !important;
+            max-width: 100% !important;
+            min-width: 0 !important;
+            flex: 1 1 auto !important;
+            flex-shrink: 1 !important;
+            border-right: none !important;
+            border-bottom: 1px solid #dee2e6;
+            // Must match portrait-footer height so content is not covered
+            padding-bottom: 122px !important;
+            // Hidden by default; tab-switching reveals it
+            display: none !important;
+
+            // In portrait mode the desktop ControlButtons row is hidden
+            .control-buttons {
+                display: none !important;
+            }
+
+            // Compact numpad for fat fingers
+            .numpad {
+                .numpad-button {
+                    min-height: 54px !important;
+                    font-size: 1.15rem !important;
+                }
+            }
+
+            // Give OrderSummary room to scroll
+            .order-container {
+                // Enough room: screen height minus navbar(44) minus pay-strip(52) minus tab-bar(60) minus numpad+actionpad
+                max-height: calc(100dvh - 44px - 122px - 220px);
+                overflow-y: auto;
+            }
+
+            // Keep subpads tight
+            .subpads {
+                padding-top: 6px !important;
+            }
+
+            // Hide the ActionpadWidget in leftpane — pay strip handles Pay/Send
+            // (keeps the restaurant patches active for nbrOfChanges tracking,
+            //  but we show our own buttons in the pay strip)
+            .actionpad {
+                display: none !important;
+            }
+        }
+
+        /* ---- RIGHT PANE (Products) ---- */
+        .rightpane {
+            flex: 1 1 auto !important;
+            width: 100% !important;
+            max-width: 100% !important;
+            // Push content above the fixed footer (pay strip ~52px + tab bar ~60px + gap)
+            padding-bottom: 122px !important;
+            overflow: hidden;
+        }
+
+        /* ---- 2-COLUMN PRODUCT GRID ---- */
+        .product-list {
+            grid-template-columns: repeat(2, 1fr) !important;
+            gap: 6px !important;
+            padding: 6px !important;
+        }
+
+        /* ---- COMPACT PRODUCT CARDS ---- */
+        // Cap the image so cards don't dominate the screen
+        .product-img {
+            max-height: 90px !important;
+            // ratio-4x3 makes it ~75% of width — on 2-col that's ~135px.
+            // Override the ratio so the image stays <= 90px tall.
+            --bs-aspect-ratio: 60% !important;
+
+            img {
+                max-height: 90px !important;
+                object-fit: cover;
+            }
+        }
+
+        // Minimum card height for no-image products
+        .rightpane .product:where(.product:not(:has(.product-img))) {
+            min-height: 4.5rem !important;
+        }
+
+        // Product name: 2 lines max, smaller font
+        .product-name {
+            font-size: 0.78rem !important;
+            -webkit-line-clamp: 2 !important;
+
+            &.no-image {
+                aspect-ratio: 3 / 2 !important;
+            }
+        }
+
+        /* ---- HIDE ORIGINAL MOBILE SWITCHPANE ---- */
+        // The standard "Pay | Cart" bottom bar must not show in portrait mode
+        .switchpane {
+            display: none !important;
+        }
+
+        /* ============================================================
+           TAB VISIBILITY — driven by class on .product-screen
+           ============================================================ */
+        &.portrait-tab-products {
+            .leftpane { display: none !important; }
+            .rightpane { display: flex !important; }
+        }
+
+        &.portrait-tab-cart {
+            .leftpane {
+                display: flex !important;
+                // Show full left pane including numpad
+                .subpads { display: flex; }
+            }
+            .rightpane { display: none !important; }
+        }
+
+        &.portrait-tab-numpad {
+            .leftpane {
+                display: flex !important;
+                // Compact order list, expand numpad area
+                .order-container { max-height: 35vh !important; }
+            }
+            .rightpane { display: none !important; }
+        }
+
+        /* ============================================================
+           PORTRAIT FOOTER — fixed at the bottom of .product-screen
+           ============================================================ */
+        .portrait-footer {
+            position: absolute;
+            bottom: 0;
+            left: 0;
+            right: 0;
+            z-index: 100;
+            display: flex;
+            flex-direction: column;
+            box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.08);
+        }
+
+        /* ---- PAY STRIP ---- */
+        .portrait-pay-strip {
+            background: #fff;
+            border-top: 1px solid #dee2e6;
+            min-height: 52px;
+
+            .portrait-total-amount {
+                font-size: 1.1rem;
+                font-weight: 700;
+                letter-spacing: -0.02em;
+            }
+
+            .portrait-pay-btn,
+            .portrait-send-btn {
+                border-radius: 10px;
+                font-weight: 600;
+                font-size: 0.9rem;
+                padding: 8px 14px;
+            }
+
+            .portrait-pay-btn {
+                min-width: 80px;
+            }
+
+            .portrait-send-btn {
+                min-width: 80px;
+            }
+        }
+
+        /* ---- BOTTOM TAB BAR ---- */
+        .portrait-tab-bar {
+            background: #fff;
+            border-top: 2px solid #e9ecef;
+            height: 60px;
+
+            .portrait-tab-btn {
+                display: flex;
+                flex-direction: column;
+                align-items: center;
+                justify-content: center;
+                border: none;
+                background: transparent;
+                font-size: 0.68rem;
+                font-weight: 500;
+                color: #6c757d;
+                gap: 2px;
+                cursor: pointer;
+                transition: background 0.15s, color 0.15s;
+                position: relative;
+
+                i {
+                    font-size: 1.15rem;
+                    line-height: 1;
+                }
+
+                span {
+                    line-height: 1;
+                }
+
+                &.active {
+                    color: #6610f2;
+                    background: rgba(102, 16, 242, 0.06);
+
+                    i { color: #6610f2; }
+
+                    // Active indicator line at top
+                    &::before {
+                        content: '';
+                        position: absolute;
+                        top: 0;
+                        left: 20%;
+                        right: 20%;
+                        height: 3px;
+                        background: #6610f2;
+                        border-radius: 0 0 3px 3px;
+                    }
+                }
+
+                &:hover:not(.active) {
+                    background: rgba(0, 0, 0, 0.04);
+                    color: #495057;
+                }
+            }
+        }
+
+        /* ---- CART BADGE (item count on Cart tab) ---- */
+        .portrait-badge {
+            position: absolute;
+            top: 6px;
+            right: calc(50% - 16px);
+            background: #6610f2;
+            color: #fff;
+            font-size: 0.6rem;
+            font-weight: 700;
+            min-width: 16px;
+            height: 16px;
+            border-radius: 8px;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            padding: 0 4px;
+            line-height: 1;
+        }
+    }
+
+    /* ============================================================
+       CATEGORY SELECTOR — compact chips on portrait
+       ============================================================ */
+    .category-selector {
+        .category-list {
+            flex-wrap: nowrap;
+            overflow-x: auto;
+            -webkit-overflow-scrolling: touch;
+            gap: 4px !important;
+            padding: 4px 6px !important;
+
+            button {
+                font-size: 0.75rem !important;
+                padding: 4px 10px !important;
+                white-space: nowrap;
+                flex-shrink: 0;
+            }
+        }
+    }
+
+    /* ============================================================
+       ORDER LINES — compact for small screen
+       ============================================================ */
+    .orderline {
+        padding: 6px 8px !important;
+
+        .product-name {
+            font-size: 0.82rem !important;
+        }
+
+        .product-price {
+            font-size: 0.82rem !important;
+        }
+
+        .qty {
+            font-size: 0.85rem !important;
+        }
+    }
+
+    /* ============================================================
+       ORDER SUMMARY TOTAL ROW
+       ============================================================ */
+    .order-summary {
+        font-size: 0.85rem !important;
+
+        .fs-3 {
+            font-size: 1.1rem !important;
+        }
+    }
+}