/* ========================================
   APEX LABS — PRODUCT PAGE STYLES
======================================== */

.product-nav {
    background: var(--white);
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.back-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--blue);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s;
}
.back-link:hover {
    color: var(--purple);
}

.product-page {
    padding: 120px 0 60px;
    min-height: 70vh;
}

.product-page-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.product-page-img {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--gray-50);
}
.product-page-img img {
    width: 100%;
    display: block;
    border-radius: var(--radius);
}

.product-page-tag {
    position: absolute;
    top: 16px;
    right: 16px;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 700;
}
.product-page-tag.tag-liquid {
    background: linear-gradient(135deg, var(--teal), var(--blue));
}

.product-page-info h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
}
.product-page-info h1 span {
    color: var(--blue);
    font-weight: 600;
}

.product-page-desc {
    font-size: 1rem;
    color: var(--gray-600);
    line-height: 1.9;
    margin-bottom: 24px;
}

.product-page-price {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 24px;
    flex-direction: row-reverse;
}
body.ltr .product-page-price {
    flex-direction: row;
}
.product-page-price .price {
    font-size: 2rem;
}
.product-page-price .price-old {
    font-size: 1.2rem;
}

.product-page-info .btn {
    display: inline-block;
    margin-bottom: 32px;
}

.product-page-specs,
.product-page-benefits {
    margin-bottom: 28px;
}

.product-page-specs h3,
.product-page-benefits h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--blue-100);
}

.product-page-specs ul,
.product-page-benefits ul {
    list-style: none;
}

.product-page-specs li,
.product-page-benefits li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.95rem;
    color: var(--gray-600);
}

.product-page-specs li i {
    color: var(--blue);
    font-size: 0.85rem;
    width: 20px;
    text-align: center;
}

.product-page-benefits li i {
    color: var(--green);
    font-size: 0.8rem;
    width: 20px;
    text-align: center;
}

/* ========== MOBILE ========== */
@media (max-width: 640px) {
    .product-page-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .product-page {
        padding: 100px 0 40px;
    }

    .product-page-info h1 {
        font-size: 1.6rem;
    }

    .product-page-price .price {
        font-size: 1.6rem;
    }
}