> For the complete documentation index, see [llms.txt](https://ftcoders.first-tech.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ftcoders.first-tech.com/first-tech-ttp-sdk/product-catalog-product-details-and-add-to-cart.md).

# Product Catalog, Product Details, and Add to Cart

**Objective**

This section defines the **minimum requirements** for browsing the product catalog, viewing detailed product information, and adding items to the cart. The flow must ensure clarity in product organization, ease of interaction, and transparency in pricing.

Insights

* Navigation must be smooth and accessible, with focus on fast conversions and clear product visuals.
* Images must follow contrast, sharpness, and mobile readability guidelines.
* This flow must comply with usability best practices for mobile e-commerce and assisted selling environments.

***

<figure><img src="/files/Klf4RHHZUZVQca5HCqof" alt=""><figcaption></figcaption></figure>

## Main Catalog Screen

### 01 - Category filters&#x20;

Must present visible filtering options (e.g., All, Shirts, Shoes), with the active filter clearly highlighted

### 02 - Product list&#x20;

Each product must display: image, name, category, price, and stock (icon and quantity)

### 03 - Add to cart button&#x20;

Cart icon must be visible at the top corner of each item; it should allow quick add-to-cart without leaving the list

{% hint style="success" %}
**Mandatory:** \
Product categorization must be clear and functional, with visible indicators for stock and price.
{% endhint %}

{% hint style="info" %}
**Recommended:** \
Provide immediate visual feedback when a product is added (e.g., cart animation).
{% endhint %}

***

## Product Detail Screen

### 04 - Enlarged product image&#x20;

Must be visually prominent and high resolution

### 05 - Detailed information&#x20;

Must include:

* Product name
* Price
* Available stock
* Functional product description (clear and objective)
* Quantity selector with +/− buttons&#x20;

{% hint style="success" %}
**Mandatory:**&#x20;

All relevant product information must be shown before the purchase.
{% endhint %}

{% hint style="info" %}
**Recommended:**&#x20;

Use plain, functional language focused on benefits and usability.
{% endhint %}

***

## Add to Cart Action

### 06 - “Add to cart” button&#x20;

Must be clearly visible and only enabled when quantity is greater than zero

{% hint style="success" %}
**Mandatory:**&#x20;

After adding, redirect the user to the cart or show a non-intrusive confirmation.
{% endhint %}

{% hint style="info" %}
**Recommended:**&#x20;

Display a quick summary (e.g., “2 items added”).
{% endhint %}

***

## Cart Screen

### 07 - Cart item list&#x20;

Each item must include: image, name, category, price, quantity selector, and remove option

Order summary must include:

* Subtotal
* Discount (if applicable)
* Final total with visual emphasis
* “Payment method” button
* Must be the next clear step, visually emphasized

{% hint style="success" %}
**Mandatory:**&#x20;

Cart must allow full review before moving to payment.
{% endhint %}

{% hint style="info" %}
**Recommended:**&#x20;

Provide clear feedback when modifying quantities or removing items.
{% endhint %}

***

## Mandatory Messages

* When a product is added:

  > Product successfully added to cart.
* When stock is insufficient:

  > Selected quantity exceeds available stock. Please adjust and try again.

## Expected Behaviors

* Every product added must update the total item count in real time.
* The product detail screen must be accessible from both the catalog and personalized recommendations.
* Quantity fields must block negative or invalid values.
* The “Payment method” button must lead to the checkout and Tap to Pay flow.


---

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