Title: Shopify Product Card
Description: A responsive product card component for displaying products in collections with image, title, price, and add to cart button.
Code:
<div class="product-card">
  <a href="{{ product.url | within: collection }}" class="product-card__link">
    <div class="product-card__image-wrapper">
      {% if product.featured_image %}
        <img 
          class="product-card__image"
          src="{{ product.featured_image | img_url: '400x' }}"
          alt="{{ product.featured_image.alt | escape }}"
          width="400"
          height="400"
          loading="lazy"
        >
      {% else %}
        {{ 'product-1' | placeholder_svg_tag: 'product-card__image placeholder-svg' }}
      {% endif %}
      
      {% if product.compare_at_price > product.price %}
        <span class="product-card__badge">Sale</span>
      {% endif %}
    </div>
    
    <div class="product-card__info">
      <h3 class="product-card__title">{{ product.title }}</h3>
      
      <div class="product-card__price">
        {% if product.compare_at_price > product.price %}
          <span class="product-card__price-regular">{{ product.price | money }}</span>
          <span class="product-card__price-compare">{{ product.compare_at_price | money }}</span>
        {% else %}
          <span class="product-card__price-regular">{{ product.price | money }}</span>
        {% endif %}
      </div>
    </div>
  </a>
  
  <div class="product-card__actions">
    {% if product.available %}
      <button 
        class="product-card__add-to-cart"
        data-product-id="{{ product.id }}"
        data-variant-id="{{ product.selected_or_first_available_variant.id }}"
      >
        Add to cart
      </button>
    {% else %}
      <button class="product-card__sold-out" disabled>Sold out</button>
    {% endif %}
  </div>
</div>

<style>
.product-card {
  position: relative;
  margin-bottom: 30px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.product-card__link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.product-card__image-wrapper {
  position: relative;
  padding-top: 100%; /* 1:1 Aspect Ratio */
  overflow: hidden;
}

.product-card__image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.product-card:hover .product-card__image {
  transform: scale(1.05);
}

.product-card__badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: #e53e3e;
  color: white;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: bold;
}

.product-card__info {
  padding: 15px;
  background-color: white;
}

.product-card__title {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 500;
}

.product-card__price {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-weight: 500;
}

.product-card__price-regular {
  font-size: 1rem;
}

.product-card__price-compare {
  margin-left: 8px;
  font-size: 0.875rem;
  color: #666;
  text-decoration: line-through;
}

.product-card__actions {
  padding: 0 15px 15px;
  background-color: white;
}

.product-card__add-to-cart,
.product-card__sold-out {
  width: 100%;
  padding: 10px 15px;
  border: none;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s;
}

.product-card__add-to-cart {
  background-color: #3182ce;
  color: white;
}

.product-card__add-to-cart:hover {
  background-color: #2c5282;
}

.product-card__sold-out {
  background-color: #e2e8f0;
  color: #4a5568;
  cursor: not-allowed;
}
</style>