/* Product Categories Navigation */
.product-categories {
    background-color: var(--light);
    padding: 30px 0;
    position: sticky;
    top: 70px;
    z-index: 100;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.category-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.category-link {
    padding: 10px 25px;
    background-color: var(--white);
    border-radius: 30px;
    font-weight: 600;
    color: var(--dark);
    transition: var(--transition);
    border: 2px solid transparent;
}

.category-link:hover,
.category-link.active {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* Therapeutic Areas Section */
.therapeutic-areas {
    padding: 80px 0;
}

.area-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 60px;
    transition: var(--transition);
}

.area-card:hover {
    box-shadow: var(--shadow-hover);
}

.area-header {
    padding: 40px;
    background-color: var(--light);
    border-bottom: 1px solid var(--gray-light);
}

.area-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.area-products {
    padding: 40px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-item {
    background-color: var(--light);
    padding: 25px;
    border-radius: 8px;
    transition: var(--transition);
    border-left: 4px solid var(--primary);
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.product-item h4 {
    margin-bottom: 10px;
    color: var(--secondary);
}

.product-item .product-type {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 10px;
    display: block;
}

/* Nutraceuticals Section */
.nutraceuticals-section {
    background-color: var(--light);
    padding: 80px 0;
}

.nutra-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.nutra-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.nutra-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.nutra-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 20px;
}

/* Quality Assurance */
.quality-section {
    padding: 80px 0;
}

.quality-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.quality-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.quality-item {
    text-align: left;
    padding: 30px;
    background-color: var(--light);
    border-radius: 8px;
    border-left: 4px solid var(--primary);
}

.quality-item i {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* Download Section */
.download-section {
    background: linear-gradient(to right, var(--secondary), var(--secondary-light));
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.download-section h2 {
    color: var(--white);
}

.download-section h2:after {
    background-color: var(--white);
    left: 50%;
    transform: translateX(-50%);
}

.download-section p {
    max-width: 700px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

/* Products Page Responsive */
@media (max-width: 992px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nutra-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quality-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .category-nav {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .nutra-grid {
        grid-template-columns: 1fr;
    }
    
    .area-header,
    .area-products {
        padding: 30px 20px;
    }
}