<style>
    /* Product Image & Thumbnails */
    .thumbnail-container {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .thumbnail-img {
        cursor: pointer;
        border: 2px solid #ddd;
        border-radius: 5px;
        margin-bottom: 5px;
        width: 60px;
        height: 60px;
        object-fit: cover;
        display: block;
        transition: all 0.3s ease;
    }

    .thumbnail-img:hover,
    .thumbnail-img.active {
        border-color: #e53935;
    }

    .main-img-container {
        position: relative;
        width: 100%;
    }

    .main-img-preview {
        width: 100%;
        height: 400px;
        object-fit: contain;
        border: 1px solid #eee;
        background: #fafafa;
        display: block;
        margin-bottom: 10px;
        border-radius: 8px;
    }

    .zoom-icon {
        position: absolute;
        bottom: 15px;
        right: 15px;
        background: rgba(0, 0, 0, 0.5);
        color: white;
        width: 35px;
        height: 35px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
    }

    /* Product Info */
    .product-title {
        font-size: 1.8rem;
        font-weight: 600;
        margin-bottom: 15px;
        color: #333;
    }

    .price-container {
        background: #f8f9fa;
        padding: 15px;
        border-radius: 8px;
        margin-bottom: 20px;
    }

    .price {
        font-size: 1.8rem;
        font-weight: bold;
        color: #e53935;
    }

    .old-price {
        text-decoration: line-through;
        color: gray;
        font-size: 1.2rem;
    }

    .discount {
        background: #4caf50;
        color: white;
        padding: 3px 8px;
        border-radius: 4px;
        font-weight: 500;
        margin-left: 10px;
        font-size: 0.9rem;
    }

    .stock-badge {
        font-size: 0.9rem;
        padding: 5px 10px;
        border-radius: 4px;
    }

    .offer-box {
        border: 1px dashed #999;
        padding: 15px;
        font-size: 0.9rem;
        border-radius: 8px;
        margin: 20px 0;
        background: #fff9e6;
    }

    .icon-box {
        text-align: center;
        font-size: 0.85rem;
        padding: 10px 5px;
        border-radius: 5px;
        background: #f8f9fa;
        transition: all 0.3s;
    }

    .icon-box:hover {
        background: #e9ecef;
        transform: translateY(-3px);
    }

    /* Related Products */
    .section-title {
        position: relative;
        text-align: center;
        margin: 40px 0 30px;
        font-weight: 600;
    }

    .section-title:after {
        content: '';
        display: block;
        width: 80px;
        height: 3px;
        background: #e53935;
        margin: 10px auto;
    }

    .slider-item-box {
        background: #fff;
        border-radius: 10px;
        padding: 15px;
        text-align: center;
        transition: 0.3s;
        border: 1px solid #eee;
        height: 100%;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }

    .slider-item-box:hover {
        transform: translateY(-5px);
        box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    }

    .slider-img-hover {
        position: relative;
        width: 100%;
        height: 180px;
        overflow: hidden;
        margin-bottom: 15px;
    }

    .slider-img-hover img {
        width: 100%;
        height: 100%;
        object-fit: contain;
        transition: opacity 0.4s ease;
    }

    .slider-img-hover .hover-img {
        position: absolute;
        top: 0;
        left: 0;
        opacity: 0;
    }

    .slider-img-hover:hover .hover-img {
        opacity: 1;
    }

    .slider-img-hover:hover .main-img {
        opacity: 0;
    }

    .slider-title {
        font-size: 0.95rem;
        font-weight: 500;
        margin-bottom: 10px;
        height: 40px;
        overflow: hidden;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
    }

    .slider-price {
        font-size: 1.1rem;
        font-weight: bold;
        color: #e53935;
        margin-bottom: 10px;
    }

    .slider-price del {
        color: #777;
        font-size: 0.9rem;
        margin-right: 5px;
    }

    .slider-price .off {
        color: green;
        font-weight: 500;
        font-size: 0.8rem;
        margin-left: 5px;
    }

    /* Swiper buttons */
    .swiper-button-next,
    .swiper-button-prev {
        background: white;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
        color: #e53935;
    }

    .swiper-button-next:after,
    .swiper-button-prev:after {
        font-size: 20px;
    }

    /* Tabs */
    .nav-tabs .nav-link {
        border: none;
        border-bottom: 3px solid transparent;
        color: #6c757d;
        font-weight: 500;
        padding: 10px 20px;
    }

    .nav-tabs .nav-link.active {
        color: #e53935;
        border-bottom: 3px solid #e53935;
        background: transparent;
    }

    .tab-content {
        border: 1px solid #dee2e6;
        border-top: none;
        border-radius: 0 0 5px 5px;
        padding: 20px;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
        .thumbnail-container {
            flex-direction: row;
            order: 2;
            margin-top: 10px;
            justify-content: center;
        }

        .main-img-preview {
            height: 300px;
        }

        .product-title {
            font-size: 1.5rem;
        }

        .price {
            font-size: 1.5rem;
        }
    }
</style>
