/* ====================================
   PRODUCT DETAIL STYLES - GIOLLI PREMIUM
   ==================================== */

/* Product Detail Layout */
.product-detail-section {
    padding: 4rem 0;
    background: var(--white);
}

.product-detail-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

/* Product Gallery */
.product-gallery {
    position: sticky;
    top: 2rem;
    height: fit-content;
}

.main-product-image {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-large);
    overflow: hidden;
    margin-bottom: 1rem;
    background: var(--light-gray);
    border: 1px solid rgba(185, 178, 167, 0.2);
    cursor: zoom-in;
}

.main-product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

.main-product-image:hover img {
    transform: scale(1.05);
}

.image-zoom-overlay {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    opacity: 0;
    transition: var(--transition-base);
}

.main-product-image:hover .image-zoom-overlay {
    opacity: 1;
}

.thumbnail-gallery {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;
}

.thumbnail {
    aspect-ratio: 1;
    border-radius: var(--radius-medium);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition-base);
    background: var(--light-gray);
}

.thumbnail:hover,
.thumbnail.active {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Product Information */
.product-info {
    padding: 1rem 0;
}

.product-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--light-gray);
}

.product-category-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#product-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.product-subtitle {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-style: italic;
    margin-bottom: 1rem;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.product-rating .stars {
    display: flex;
    gap: 0.2rem;
}

.product-rating .stars i {
    color: #FFD700;
    font-size: 1.2rem;
}

.rating-text {
    color: var(--secondary-color);
    font-weight: 500;
}

/* Product Description */
.product-description {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--light-gray);
}

.product-description p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--light-gray);
    border-radius: var(--radius-medium);
    transition: var(--transition-base);
}

.feature-item:hover {
    background: rgba(185, 178, 167, 0.15);
    transform: translateY(-2px);
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.feature-item span {
    font-weight: 500;
    color: var(--secondary-color);
}

/* Product Configuration */
.product-configuration {
    margin-bottom: 3rem;
}

.config-section {
    margin-bottom: 2.5rem;
}

.config-section h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
}

/* RAL Selector */
.ral-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.ral-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition: var(--transition-base);
    background: var(--white);
}

.ral-option:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.ral-option.selected {
    border-color: var(--primary-color);
    background: rgba(185, 178, 167, 0.1);
    box-shadow: var(--shadow-medium);
}

.ral-color {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.ral-info {
    display: flex;
    flex-direction: column;
}

.ral-code {
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.ral-name {
    font-size: 0.85rem;
    color: var(--primary-color);
}

/* Volume Selector */
.volume-selector {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.volume-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition: var(--transition-base);
    background: var(--white);
    text-align: center;
}

.volume-option:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.volume-option.selected {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: var(--white);
}

.volume-container {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--light-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

.volume-option.selected .volume-container {
    background: rgba(255, 255, 255, 0.2);
}

.volume-container i {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition-base);
}

.volume-option.selected .volume-container i {
    color: var(--white);
}

.volume-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.volume-size {
    font-size: 1.1rem;
    font-weight: 700;
}

.volume-coverage {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* Quantity Selector */
.quantity-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 200px;
}

.qty-btn {
    width: 50px;
    height: 50px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: var(--radius-medium);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 600;
    transition: var(--transition-base);
}

.qty-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.05);
}

#quantity-input {
    width: 80px;
    height: 50px;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-medium);
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--secondary-color);
    transition: var(--transition-base);
}

#quantity-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Purchase Section */
.product-purchase-section {
    background: linear-gradient(135deg, var(--light-gray), rgba(255, 255, 255, 0.8));
    padding: 2.5rem;
    border-radius: var(--radius-large);
    margin-bottom: 3rem;
    border: 1px solid rgba(185, 178, 167, 0.2);
}

.price-container {
    margin-bottom: 2rem;
}

.price-display {
    text-align: center;
    margin-bottom: 1.5rem;
}

#current-price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--secondary-color);
    display: block;
    font-family: var(--font-display);
}

.price-unit {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 500;
}

.price-breakdown {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.customer-toggle {
    display: flex;
    background: var(--white);
    border-radius: var(--radius-full);
    padding: 0.25rem;
    border: 2px solid var(--primary-color);
}

.customer-type {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--primary-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-base);
    font-weight: 500;
    font-size: 0.9rem;
}

.customer-type.active {
    background: var(--primary-color);
    color: var(--white);
}

.price-per-unit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary-color);
    font-weight: 500;
}

/* Add to Cart Section */
.add-to-cart-section {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.add-to-cart-main,
.buy-now {
    flex: 1;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    border-radius: var(--radius-medium);
    transition: var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.add-to-cart-main {
    background: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.add-to-cart-main:hover {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.buy-now {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.buy-now:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Stock Info */
.stock-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.stock-status,
.shipping-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    font-weight: 500;
}

.stock-status.in-stock {
    color: var(--success);
}

.stock-status i,
.shipping-info i {
    font-size: 1.1rem;
}

.shipping-info {
    color: var(--info);
}

/* Product Documents */
.product-documents {
    margin-bottom: 3rem;
}

.product-documents h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
}

.document-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.doc-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-medium);
    text-decoration: none;
    color: var(--secondary-color);
    transition: var(--transition-base);
}

.doc-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    color: var(--secondary-color);
}

.doc-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-medium);
    background: var(--light-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    flex-shrink: 0;
    transition: var(--transition-base);
}

.doc-card:hover .doc-icon {
    background: var(--primary-color);
    color: var(--white);
}

.doc-info {
    flex: 1;
}

.doc-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--secondary-color);
}

.doc-info p {
    font-size: 0.9rem;
    color: var(--primary-color);
    margin: 0;
}

.doc-download {
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: var(--transition-base);
}

.doc-card:hover .doc-download {
    color: var(--secondary-color);
    transform: scale(1.2);
}

/* Product Tabs */
.product-tabs-section {
    background: var(--light-gray);
    padding: 4rem 0;
}

.product-tabs {
    background: var(--white);
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.tab-navigation {
    display: flex;
    background: var(--light-gray);
    border-bottom: 1px solid rgba(185, 178, 167, 0.2);
}

.tab-btn {
    flex: 1;
    padding: 1.5rem 2rem;
    border: none;
    background: transparent;
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--white);
    color: var(--secondary-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
}

.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    padding: 3rem;
    animation: fadeIn 0.3s ease;
}

.tab-panel.active {
    display: block;
}

/* Tab Content Styles */
.tab-content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.content-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.content-text p {
    line-height: 1.6;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.content-text h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin: 2rem 0 1rem 0;
}

.content-text ul {
    list-style: none;
    padding: 0;
}

.content-text li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 2rem;
    color: var(--secondary-color);
}

.content-text li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.content-image {
    border-radius: var(--radius-medium);
    overflow: hidden;
}

.content-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Specifications Grid */
.specifications-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.spec-category h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
}

.spec-table {
    background: var(--light-gray);
    border-radius: var(--radius-medium);
    overflow: hidden;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid rgba(185, 178, 167, 0.2);
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    font-weight: 500;
    color: var(--secondary-color);
}

.spec-value {
    font-weight: 600;
    color: var(--primary-color);
}

/* Application Guide */
.application-guide h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

.application-steps {
    margin-bottom: 3rem;
}

.step-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: var(--radius-medium);
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.step-content p {
    color: var(--secondary-color);
    line-height: 1.6;
    margin: 0;
}

.application-tips h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.tip-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--white);
    border-radius: var(--radius-medium);
    border: 1px solid rgba(185, 178, 167, 0.2);
}

.tip-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tip-item p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

/* Reviews Section */
.reviews-section {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
}

.rating-overview {
    text-align: center;
    padding: 2rem;
    background: var(--light-gray);
    border-radius: var(--radius-medium);
}

.overall-rating {
    margin-bottom: 2rem;
}

.rating-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--secondary-color);
    display: block;
    margin-bottom: 0.5rem;
}

.rating-stars {
    margin-bottom: 0.5rem;
}

.rating-stars i {
    color: #FFD700;
    font-size: 1.5rem;
    margin: 0 0.1rem;
}

.rating-count {
    color: var(--primary-color);
    font-weight: 500;
}

.rating-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.rating-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.rating-bar span:first-child {
    width: 40px;
    text-align: left;
}

.bar {
    flex: 1;
    height: 8px;
    background: rgba(185, 178, 167, 0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.fill {
    height: 100%;
    background: #FFD700;
    transition: width 0.3s ease;
}

.rating-bar span:last-child {
    width: 30px;
    text-align: right;
    font-weight: 500;
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.review-item {
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: var(--radius-medium);
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.reviewer-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.reviewer-name {
    font-weight: 600;
    color: var(--secondary-color);
}

.reviewer-type {
    font-size: 0.85rem;
    color: var(--primary-color);
    background: rgba(185, 178, 167, 0.2);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-small);
    width: fit-content;
}

.review-rating {
    display: flex;
    gap: 0.2rem;
}

.review-rating i {
    color: #FFD700;
}

.review-date {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.review-content p {
    color: var(--secondary-color);
    line-height: 1.6;
    margin: 0;
    font-style: italic;
}

/* Related Products */
.related-products-section {
    padding: 4rem 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--primary-color);
    max-width: 600px;
    margin: 0 auto;
}

.related-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-large);
    overflow: hidden;
    border: 1px solid rgba(185, 178, 167, 0.2);
    transition: var(--transition-base);
    position: relative;
}

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

.product-card .product-image {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

.product-card .product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

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

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

.product-badge.eco {
    background: var(--success);
    color: var(--white);
}

.product-badge.vintage {
    background: var(--accent-color);
    color: var(--white);
}

.product-actions {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--transition-base);
}

.product-card:hover .product-actions {
    opacity: 1;
}

.quick-view-btn,
.product-actions .add-to-cart-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--white);
    color: var(--primary-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    box-shadow: var(--shadow-medium);
}

.quick-view-btn:hover,
.product-actions .add-to-cart-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.product-card .product-info {
    padding: 1.5rem;
}

.product-card .product-category {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.product-card .product-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.product-card .product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.product-card .product-rating .stars {
    display: flex;
    gap: 0.1rem;
}

.product-card .product-rating .stars i {
    color: #FFD700;
    font-size: 0.9rem;
}

.product-card .product-rating span {
    font-size: 0.85rem;
    color: var(--primary-color);
}

.product-card .product-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.product-card .current-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.product-card .price-unit {
    font-size: 0.9rem;
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .related-products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .ral-selector {
        grid-template-columns: 1fr;
    }

    .volume-selector {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .product-detail-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .product-gallery {
        position: static;
    }

    .thumbnail-gallery {
        grid-template-columns: repeat(4, 1fr);
    }

    .product-features {
        grid-template-columns: 1fr;
    }

    .document-grid {
        grid-template-columns: 1fr;
    }

    .tab-content-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .specifications-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .reviews-section {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .tips-grid {
        grid-template-columns: 1fr;
    }

    .related-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .product-detail-section {
        padding: 2rem 0;
    }

    #product-title {
        font-size: 2rem;
    }

    .volume-selector {
        grid-template-columns: 1fr;
    }

    .add-to-cart-section {
        flex-direction: column;
    }

    .price-breakdown {
        justify-content: center;
    }

    .customer-toggle {
        order: 1;
        justify-self: center;
    }

    .tab-navigation {
        flex-wrap: wrap;
    }

    .tab-btn {
        flex: 1 1 50%;
        padding: 1rem;
        font-size: 0.9rem;
    }

    .tab-panel {
        padding: 2rem 1rem;
    }

    .related-products-grid {
        grid-template-columns: 1fr;
    }

    .product-actions {
        flex-direction: row;
        top: auto;
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .thumbnail-gallery {
        grid-template-columns: repeat(3, 1fr);
    }

    .tab-btn {
        flex: 1 1 100%;
        text-align: center;
    }

    .ral-option {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
}

/* Animation Keyframes */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Print Styles */
@media print {
    .product-actions,
    .cart-sidebar,
    .back-to-top,
    .related-products-section {
        display: none !important;
    }
}