/* ============================================================
   Product Pages Styles - Theme-Integrated CSS
   Uses prefix: product-page-
   ============================================================ */

/* Import theme variables */
@import url('../theme_setting/load_theme.php');

/* 1. CSS Variables and Base */
:root {
    --product-page-spacing-xs: 0.5rem;
    --product-page-spacing-sm: 1rem;
    --product-page-spacing-md: 1.5rem;
    --product-page-spacing-lg: 2rem;
    --product-page-spacing-xl: 3rem;
    --product-page-border-radius: var(--border-radius, 8px);
    --product-page-transition: var(--transition-speed, 0.3s) ease;
    --product-page-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --product-page-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 2. Page Layout Structure */
.product-page {
    padding: var(--product-page-spacing-lg) 0;
    background: var(--background-color, #f8f9fa);
    min-height: calc(100vh - 200px);
}

.product-page .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--product-page-spacing-md);
}

.product-page-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--product-page-spacing-xl);
    align-items: start;
}

.product-page-main {
    background: var(--background-color);
    border-radius: var(--product-page-border-radius);
    overflow: hidden;
}

.product-page-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--product-page-spacing-lg);
}

/* 3. Product Header Section */
.product-page-header {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-page-title-section {
    margin-bottom: var(--product-page-spacing-md);
}

.product-page-main-title {
    font-family: var(--heading-font, inherit);
    font-size: calc(var(--font-size-base) + 16px);
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-color);
    margin: 0 0 var(--product-page-spacing-sm) 0;
}

.product-page-meta {
    display: flex;
    flex-direction: column;
    gap: var(--product-page-spacing-sm);
}

.product-page-code {
    font-size: calc(var(--font-size-base) - 1px);
    color: var(--secondary-color);
}

.product-sku {
    font-weight: 600;
    color: var(--primary-color);
}

.product-page-stats {
    display: flex;
    align-items: center;
    gap: var(--product-page-spacing-md);
    flex-wrap: wrap;
}

.product-rating-display {
    display: flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
}

.product-rating-display .stars {
    display: flex;
    gap: 2px;
}

.product-rating-display .stars .fa-star {
    color: #e5e7eb;
    font-size: calc(var(--font-size-base) - 2px);
}

.product-rating-display .stars .fa-star.filled {
    color: #fbbf24;
}

.rating-text {
    font-size: calc(var(--font-size-base) - 2px);
    color: var(--secondary-color);
    font-weight: 500;
}

.product-stats-group {
    display: flex;
    align-items: center;
    gap: var(--product-page-spacing-md);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
    font-size: calc(var(--font-size-base) - 2px);
    color: var(--secondary-color);
}

.stat-item i {
    color: var(--primary-color);
}

/* 4. Product Media Section */
.product-page-media {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-media-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--product-page-spacing-lg);
    align-items: start;
}

.product-page-image-gallery {
    display: flex;
    flex-direction: column;
    gap: var(--product-page-spacing-md);
}

.product-page-main-image {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: var(--product-page-border-radius);
    overflow: hidden;
    box-shadow: var(--product-page-shadow);
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-summary-sidebar {
    position: sticky;
    top: var(--product-page-spacing-lg);
}

.product-summary-widget {
    background: #ffffff;
    border: 2px solid var(--primary-color);
    border-radius: var(--product-page-border-radius);
    padding: var(--product-page-spacing-lg);
    box-shadow: var(--product-page-shadow);
}

.summary-title {
    font-family: var(--heading-font, inherit);
    font-size: calc(var(--font-size-base) + 4px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 var(--product-page-spacing-md) 0;
    padding-bottom: var(--product-page-spacing-sm);
    border-bottom: 2px solid var(--primary-color);
}

.summary-content {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--secondary-color);
}

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

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

.product-page-image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
    font-size: calc(var(--font-size-base) + 8px);
    gap: var(--product-page-spacing-xs);
}

.product-page-image-placeholder i {
    font-size: calc(var(--font-size-base) + 24px);
}

.product-page-actions {
    display: flex;
    gap: var(--product-page-spacing-sm);
    flex-wrap: wrap;
}

.product-action-btn {
    display: flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
    padding: var(--product-page-spacing-sm) var(--product-page-spacing-md);
    background: var(--secondary-color);
    color: #ffffff;
    border: none;
    border-radius: var(--product-page-border-radius);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--product-page-transition);
}

.product-action-btn:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--product-page-shadow-hover);
}

.product-action-btn i {
    font-size: calc(var(--font-size-base) - 1px);
}

.like-btn.liked {
    background: #ef4444 !important;
    color: #ffffff !important;
}

/* 5. Product Content Section */
.product-page-content {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-section-title {
    font-family: var(--heading-font, inherit);
    font-size: calc(var(--font-size-base) + 8px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 var(--product-page-spacing-md) 0;
    padding-bottom: var(--product-page-spacing-sm);
    border-bottom: 2px solid var(--primary-color);
}

.product-page-description {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-description-content {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--secondary-color);
    padding: var(--product-page-spacing-md);
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: var(--product-page-border-radius);
    border-left: 4px solid var(--primary-color);
}

/* Product Custom Content Tabs */
.product-page-custom-content {
    margin-top: var(--product-page-spacing-xl);
    background: var(--background-color);
    border-radius: var(--product-page-border-radius);
    box-shadow: var(--product-page-shadow);
    overflow: hidden;
    display: block;
    visibility: visible;
}

.product-content-tabs {
    margin-top: 0;
}

.content-tab-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin-bottom: 0;
    border-bottom: none;
    padding: 0;
    background: #f8f9fa;
}

.content-tab-btn {
    display: inline-flex;
    align-items: center;
    padding: var(--product-page-spacing-md) var(--product-page-spacing-lg);
    background: transparent;
    border: none;
    border-right: 1px solid #e5e7eb;
    border-radius: 0;
    color: var(--secondary-color);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--product-page-transition);
    white-space: nowrap;
    position: relative;
    min-height: 50px;
}

.content-tab-btn:last-child {
    border-right: none;
}

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

.content-tab-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
}

.content-tab-btn:hover::after {
    transform: scaleX(0.5);
}

.content-tab-btn.active {
    background: #ffffff;
    color: var(--primary-color);
    font-weight: 600;
    border-bottom: 3px solid var(--primary-color);
}

.content-tab-btn.active::after {
    transform: scaleX(1);
}

.content-tab-panels {
    position: relative;
    background: #ffffff;
}

.content-tab-panel {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.content-tab-panel.active {
    display: block !important;
    visibility: visible;
}

.content-tab-content {
    background: #ffffff;
    border: none;
    border-radius: 0;
    padding: var(--product-page-spacing-xl);
    color: var(--secondary-color);
    line-height: 1.7;
    font-size: calc(var(--font-size-base) + 1px);
    min-height: 200px;
}

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

/* Responsive content tabs */
@media (max-width: 768px) {
    .content-tab-buttons {
        flex-direction: column;
    }
    
    .content-tab-btn {
        width: 100%;
        justify-content: center;
    }
}

/* 6. Related Products Section */
.product-page-related {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-related-container {
    position: relative;
    overflow: hidden;
    background: var(--background-color);
    border-radius: var(--product-page-border-radius);
    padding: var(--product-page-spacing-md);
    box-shadow: var(--product-page-shadow);
}

.product-related-grid {
    display: flex;
    gap: var(--product-page-spacing-sm);
    transition: transform 0.3s ease;
    scroll-behavior: smooth;
}

.product-related-card {
    min-width: 200px;
    max-width: 200px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: var(--product-page-border-radius);
    overflow: hidden;
    transition: all var(--product-page-transition);
}

.product-related-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--product-page-shadow);
    border-color: var(--primary-color);
}

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

.product-related-image {
    aspect-ratio: 3/2;
    background: #f8f9fa;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-related-placeholder {
    color: #9ca3af;
    font-size: calc(var(--font-size-base) + 4px);
}

.product-related-content {
    padding: var(--product-page-spacing-sm);
}

.product-related-name {
    font-size: calc(var(--font-size-base) - 1px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 var(--product-page-spacing-xs) 0;
    line-height: 1.3;
    display: -webkit-box;

    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    height: calc(var(--font-size-base) * 2.6);
}

.product-related-stats {
    display: flex;
    gap: var(--product-page-spacing-xs);
    font-size: calc(var(--font-size-base) - 3px);
}

.product-related-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--product-page-transition);
    z-index: 2;
    opacity: 0.8;
}

.product-related-nav:hover {
    opacity: 1;
    background: var(--secondary-color);
    transform: translateY(-50%) scale(1.1);
}

.product-related-nav.prev {
    left: 10px;
}

.product-related-nav.next {
    right: 10px;
}

.product-related-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: translateY(-50%);
}

.product-related-nav i {
    font-size: calc(var(--font-size-base) - 2px);
}

/* 7. Reviews and Comments Section */
.product-page-reviews {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-reviews-header {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-rating-summary {
    background: #f8f9fa;
    padding: var(--product-page-spacing-lg);
    border-radius: var(--product-page-border-radius);
    margin-top: var(--product-page-spacing-md);
}

.rating-overview {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--product-page-spacing-xl);
    align-items: center;
}

.rating-average {
    text-align: center;
}

.rating-number {
    font-size: calc(var(--font-size-base) + 24px);
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

.rating-stars {
    display: flex;
    justify-content: center;
    gap: 2px;
    margin: var(--product-page-spacing-xs) 0;
}

.rating-stars .fa-star {
    color: #e5e7eb;
    font-size: calc(var(--font-size-base) + 4px);
}

.rating-stars .fa-star.filled {
    color: #fbbf24;
}

.rating-count {
    font-size: calc(var(--font-size-base) - 2px);
    color: var(--secondary-color);
}

.rating-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--product-page-spacing-xs);
}

.rating-bar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--product-page-spacing-sm);
    align-items: center;
}

.rating-label {
    font-size: calc(var(--font-size-base) - 2px);
    color: var(--secondary-color);
    min-width: 40px;
}

.rating-progress {
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    overflow: hidden;
}

.rating-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width var(--product-page-transition);
}

.rating-percent {
    font-size: calc(var(--font-size-base) - 2px);
    color: var(--secondary-color);
    min-width: 35px;
    text-align: right;
}

/* 8. Rating Form */
.product-rating-form-section {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-write-review-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
    padding: 12px 20px;
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: var(--product-page-border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--product-page-transition);
    width: 180px;
    height: 48px;
    justify-content: center;
    box-sizing: border-box;
    white-space: nowrap;
}

.product-write-review-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--product-page-shadow-hover);
}

.product-rating-form {
    background: #ffffff;
    border: 2px solid var(--primary-color);
    border-radius: var(--product-page-border-radius);
    padding: var(--product-page-spacing-lg);
    margin-top: var(--product-page-spacing-md);
}

.form-title {
    font-family: var(--heading-font, inherit);
    font-size: calc(var(--font-size-base) + 6px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 var(--product-page-spacing-md) 0;
}

.form-row {
    display: grid;
    gap: var(--product-page-spacing-md);
    margin-bottom: var(--product-page-spacing-md);
}

.form-row.two-cols {
    grid-template-columns: 1fr 1fr;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--product-page-spacing-xs);
}

.form-group.half {
    flex: 1;
}

.form-group label {
    font-size: calc(var(--font-size-base) - 1px);
    font-weight: 600;
    color: var(--secondary-color);
}

.form-group input,
.form-group textarea {
    padding: var(--product-page-spacing-sm);
    border: 2px solid #e5e7eb;
    border-radius: var(--product-page-border-radius);
    font-size: var(--font-size-base);
    transition: border-color var(--product-page-transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.rating-input {
    display: flex;
    gap: 4px;
    margin: var(--product-page-spacing-xs) 0;
}

.rating-star {
    font-size: calc(var(--font-size-base) + 8px);
    color: #e5e7eb;
    cursor: pointer;
    transition: color var(--product-page-transition);
}

.rating-star:hover,
.rating-star.active {
    color: #fbbf24;
}

.form-actions {
    display: flex;
    gap: var(--product-page-spacing-md);
    align-items: center;
    margin-top: var(--product-page-spacing-md);
}

.submit-rating-btn,
.submit-comment-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
    padding: var(--product-page-spacing-md) var(--product-page-spacing-lg);
    background: var(--secondary-color);
    color: #ffffff;
    border: none;
    border-radius: var(--product-page-border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--product-page-transition);
}

.submit-rating-btn:hover,
.submit-comment-btn:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.cancel-rating-btn {
    padding: var(--product-page-spacing-md) var(--product-page-spacing-lg);
    background: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
    border-radius: var(--product-page-border-radius);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--product-page-transition);
}

.cancel-rating-btn:hover {
    background: var(--secondary-color);
    color: #ffffff;
}

/* 9. Reviews List */
.product-reviews-list {
    margin-bottom: var(--product-page-spacing-lg);
}

.reviews-header-with-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--product-page-spacing-md);
}

.reviews-list-title {
    font-family: var(--heading-font, inherit);
    font-size: calc(var(--font-size-base) + 4px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.reviews-navigation {
    display: flex;
    gap: var(--product-page-spacing-xs);
}

.reviews-nav-btn {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    background: #ffffff;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--product-page-transition);
    font-size: calc(var(--font-size-base) - 2px);
}

.reviews-nav-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: #ffffff;
    transform: scale(1.1);
}

.reviews-nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

.reviews-container {
    overflow: hidden;
    position: relative;
}

.reviews-grid {
    display: flex;
    flex-direction: column;
    gap: var(--product-page-spacing-md);
    transition: transform 0.3s ease;
}

.product-review-item {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: var(--product-page-border-radius);
    padding: var(--product-page-spacing-md);
    margin-bottom: var(--product-page-spacing-md);
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--product-page-spacing-sm);
}

.reviewer-info {
    display: flex;
    gap: var(--product-page-spacing-sm);
    align-items: center;
}

.reviewer-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: calc(var(--font-size-base) + 2px);
}

.reviewer-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.reviewer-name {
    font-size: calc(var(--font-size-base) + 1px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.review-stars {
    display: flex;
    gap: 2px;
}

.review-stars .fa-star {
    color: #e5e7eb;
    font-size: calc(var(--font-size-base) - 2px);
}

.review-stars .fa-star.filled {
    color: #fbbf24;
}

.review-date {
    font-size: calc(var(--font-size-base) - 2px);
    color: #9ca3af;
}

.review-title {
    font-size: calc(var(--font-size-base) + 2px);
    font-weight: 600;
    color: var(--secondary-color);
    margin: 0 0 var(--product-page-spacing-sm) 0;
}

.review-content {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--secondary-color);
    margin-bottom: var(--product-page-spacing-sm);
}

.review-actions {
    display: flex;
    gap: var(--product-page-spacing-md);
}

.review-helpful-btn,
.comment-helpful-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
    padding: var(--product-page-spacing-xs) var(--product-page-spacing-sm);
    background: transparent;
    color: var(--secondary-color);
    border: 1px solid #e5e7eb;
    border-radius: var(--product-page-border-radius);
    font-size: calc(var(--font-size-base) - 2px);
    cursor: pointer;
    transition: all var(--product-page-transition);
}

.review-helpful-btn:hover,
.comment-helpful-btn:hover {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
}

/* 10. Comments Section */
.product-comments-section {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-comments-header {
    margin-bottom: var(--product-page-spacing-lg);
}

.product-comment-form-section {
    margin-bottom: var(--product-page-spacing-lg);
}

.comments-header-with-nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: var(--product-page-spacing-md);
}

.comments-navigation {
    display: flex;
    gap: var(--product-page-spacing-xs);
}

.comments-nav-btn {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    background: #ffffff;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--product-page-transition);
    font-size: calc(var(--font-size-base) - 2px);
}

.comments-nav-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: #ffffff;
    transform: scale(1.1);
}

.comments-nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

.comments-container {
    overflow: hidden;
    position: relative;
}

.comments-grid {
    display: flex;
    flex-direction: column;
    gap: var(--product-page-spacing-md);
    transition: transform 0.3s ease;
}

.product-write-comment-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
    padding: 12px 20px;
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: var(--product-page-border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--product-page-transition);
    width: 180px;
    height: 48px;
    justify-content: center;
    box-sizing: border-box;
    white-space: nowrap;
}

.product-write-comment-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--product-page-shadow-hover);
}

.product-comment-form {
    background: #f8f9fa;
    border-radius: var(--product-page-border-radius);
    padding: var(--product-page-spacing-lg);
    margin-bottom: var(--product-page-spacing-lg);
}

.comment-form-title {
    font-family: var(--heading-font, inherit);
    font-size: calc(var(--font-size-base) + 4px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 var(--product-page-spacing-md) 0;
}

.product-comments-list {
    display: flex;
    flex-direction: column;
    gap: var(--product-page-spacing-md);
}

.product-comment-item {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: var(--product-page-border-radius);
    padding: var(--product-page-spacing-md);
}

.comment-header {
    margin-bottom: var(--product-page-spacing-sm);
}

.commenter-info {
    display: flex;
    gap: var(--product-page-spacing-sm);
    align-items: center;
}

.commenter-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: calc(var(--font-size-base) - 1px);
}

.commenter-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.commenter-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.comment-date {
    font-size: calc(var(--font-size-base) - 3px);
    color: #9ca3af;
}

.comment-content {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--secondary-color);
    margin-bottom: var(--product-page-spacing-sm);
}

.comment-actions {
    display: flex;
    gap: var(--product-page-spacing-md);
}

.comment-reply-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
    padding: var(--product-page-spacing-xs) var(--product-page-spacing-sm);
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--product-page-border-radius);
    font-size: calc(var(--font-size-base) - 2px);
    cursor: pointer;
    transition: all var(--product-page-transition);
}

.comment-reply-btn:hover {
    background: var(--primary-color);
    color: #ffffff;
}

.comment-replies {
    margin-top: var(--product-page-spacing-md);
    padding-left: var(--product-page-spacing-lg);
    border-left: 3px solid var(--primary-color);
}

.comment-reply-item {
    background: #f8f9fa;
    border-radius: var(--product-page-border-radius);
    padding: var(--product-page-spacing-sm);
    margin-bottom: var(--product-page-spacing-sm);
}

.reply-header {
    margin-bottom: var(--product-page-spacing-xs);
}

.replier-info {
    display: flex;
    gap: var(--product-page-spacing-xs);
    align-items: center;
}

.replier-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: calc(var(--font-size-base) - 3px);
}

.replier-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.replier-name {
    font-size: calc(var(--font-size-base) - 1px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.reply-date {
    font-size: calc(var(--font-size-base) - 4px);
    color: #9ca3af;
}

.reply-content {
    font-size: calc(var(--font-size-base) - 1px);
    line-height: 1.5;
    color: var(--secondary-color);
}

/* 11. Sidebar Widgets */
.product-sidebar-widget {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: var(--product-page-border-radius);
    padding: var(--product-page-spacing-lg);
    box-shadow: var(--product-page-shadow);
}

.widget-title {
    font-family: var(--heading-font, inherit);
    font-size: calc(var(--font-size-base) + 4px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 var(--product-page-spacing-md) 0;
    text-align: center;
}

.widget-subtitle {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: var(--product-page-spacing-md);
}

/* Contact Widget */
.contact-widget {
    position: relative;
    overflow: hidden;
}

.contact-widget::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: var(--sidebar-background-image, none);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.3;
    z-index: 0;
}

.contact-widget::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--primary-color);
    opacity: var(--sidebar-opacity, 0.6);
    z-index: 1;
}

.contact-widget > * {
    position: relative;
    z-index: 2;
}

.contact-info {
    margin-bottom: var(--product-page-spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--product-page-spacing-sm);
    align-items: center;
    margin-bottom: var(--product-page-spacing-md);
    padding: var(--product-page-spacing-sm);
    background: #f8f9fa;
    border-radius: var(--product-page-border-radius);
}

.contact-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: calc(var(--font-size-base) + 2px);
}

.contact-details {
    flex: 1;
}

.contact-label {
    font-size: calc(var(--font-size-base) - 2px);
    color: var(--secondary-color);
    margin-bottom: 4px;
}

.contact-value {
    font-size: var(--font-size-base);
    font-weight: 600;
}

.contact-value a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--product-page-transition);
}

.contact-value a:hover {
    color: var(--secondary-color);
}

.contact-visual {
    text-align: center;
}

.contact-image {
    margin-bottom: var(--product-page-spacing-sm);
}

.contact-image img {
    max-width: 120px;
    height: auto;
    border-radius: var(--product-page-border-radius);
}

.contact-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--product-page-spacing-md);
    background: transparent;
    position: relative;
    z-index: 3;
}

.contact-cta p {
    font-size: calc(var(--font-size-base) + 4px);
    font-weight: 600;
    color: var(--primary-color);
    text-shadow: 2px 4px 8px var(--secondary-color);
    margin: 0;
    text-align: center;
    line-height: 1.4;
}

.contact-question {
    font-size: calc(var(--font-size-base) + 18px);
    background: var(--secondary-color);
    color: #ffffff;
    border-radius: 50%;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    animation: pulse-primary 2s infinite;
    cursor: pointer;
    transition: all var(--product-page-transition);
    text-decoration: none;
    border: 3px solid #ffffff;
}

.contact-question:hover {
    transform: scale(1.15);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    background: var(--secondary-color);
}

@keyframes pulse-primary {
    0%, 100% {
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15), 0 0 0 0 rgba(0, 0, 0, 0.1);
    }
    50% {
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15), 0 0 0 10px rgba(0, 0, 0, 0);
    }
}

/* News Widget */
.news-widget {
    position: relative;
    overflow: hidden;
}

.news-widget::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--primary-color);
    opacity: var(--sidebar-opacity, 0.6);
    z-index: 1;
}

.news-widget > * {
    position: relative;
    z-index: 2;
}

.news-items {
    margin-bottom: var(--product-page-spacing-md);
}

.news-item {
    margin-bottom: var(--product-page-spacing-md);
}

.news-link {
    display: block;
    text-decoration: none;
    color: inherit;
    padding: var(--product-page-spacing-sm);
    border-radius: var(--product-page-border-radius);
    border: 1px solid #e5e7eb;
    transition: all var(--product-page-transition);
}

.news-link:hover {
    background: #f8f9fa;
    border-color: var(--primary-color);
}

.news-title {
    font-size: calc(var(--font-size-base) - 1px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 var(--product-page-spacing-xs) 0;
    line-height: 1.3;
    display: -webkit-box;

    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    height: calc(var(--font-size-base) * 2.6);
}

.news-excerpt {
    font-size: calc(var(--font-size-base) - 2px);
    color: var(--secondary-color);
    line-height: 1.4;
    margin: 0;
}

.news-view-all {
    text-align: center;
}

.view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--product-page-spacing-xs);
    padding: var(--product-page-spacing-sm) var(--product-page-spacing-md);
    background: var(--primary-color);
    color: #ffffff;
    text-decoration: none;
    border-radius: var(--product-page-border-radius);
    font-size: calc(var(--font-size-base) - 1px);
    font-weight: 600;
    transition: all var(--product-page-transition);
}

.view-all-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* 12. Responsive Design */
@media (max-width: 1024px) {
    .product-page-layout {
        grid-template-columns: 1fr;
        gap: var(--product-page-spacing-lg);
    }

    .product-page-sidebar {
        order: -1;
    }

    .product-media-layout {
        grid-template-columns: 1fr;
        gap: var(--product-page-spacing-md);
    }

    .product-summary-sidebar {
        position: static;
        order: 2;
    }

    .product-summary-widget {
        margin-top: var(--product-page-spacing-md);
    }

    .rating-overview {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--product-page-spacing-md);
    }

    /* Hide sidebar sections on tablet and below */
    .contact-widget,
    .news-widget {
        display: none !important;
    }
}

/* Product Content Data Tables */
.product-content-table {
    margin: var(--product-page-spacing-lg) 0;
}

.content-table-wrapper {
    overflow-x: auto;
    margin: var(--product-page-spacing-md) 0;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.product-content-data-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    font-size: var(--product-page-font-size-sm);
    min-width: 300px;
}

.product-content-data-table th {
    background-color: var(--primary-color);
    color: white;
    padding: var(--product-page-spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: var(--product-page-font-size-base);
    border-bottom: 2px solid var(--secondary-color);
}

.product-content-data-table td {
    padding: var(--product-page-spacing-md);
    border-bottom: 1px solid #e9ecef;
    color: var(--secondary-color);
    vertical-align: top;
}

.product-content-data-table tbody tr:nth-child(even) {
    background-color: #f8f9fa;
}

.product-content-data-table tbody tr:hover {
    background-color: #e9ecef;
    transition: background-color 0.2s ease;
}

.product-content-data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Responsive table on small screens */
@media (max-width: 767px) {
    .content-table-wrapper {
        margin: var(--product-page-spacing-sm) 0;
    }
    
    .product-content-data-table {
        font-size: var(--product-page-font-size-xs);
    }
    
    .product-content-data-table th,
    .product-content-data-table td {
        padding: var(--product-page-spacing-sm);
    }
}

@media (max-width: 768px) {
    .product-page .container {
        padding: 0 var(--product-page-spacing-sm);
    }

    .product-page-main-title {
        font-size: calc(var(--font-size-base) + 8px);
    }

    .product-page-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--product-page-spacing-sm);
    }

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

    .form-row.two-cols {
        grid-template-columns: 1fr;
    }

    .review-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--product-page-spacing-xs);
    }

    .product-action-btn {
        flex: 1;
        justify-content: center;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--product-page-spacing-xs);
    }

    /* Hide sidebar sections on mobile */
    .contact-widget,
    .news-widget {
        display: none !important;
    }

    .content-tab-buttons {
        flex-direction: column;
    }
    
    .content-tab-btn {
        width: 100%;
        justify-content: center;
        border-right: none;
        border-bottom: 1px solid #e5e7eb;
        border-radius: 0;
    }

    .content-tab-btn:last-child {
        border-bottom: none;
    }
}

@media (max-width: 480px) {
    .product-page {
        padding: var(--product-page-spacing-md) 0;
    }

    .product-page-main-title {
        font-size: calc(var(--font-size-base) + 4px);
    }

    .product-section-title {
        font-size: calc(var(--font-size-base) + 4px);
    }

    .product-page-actions {
        flex-direction: column;
    }

    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .comment-replies {
        padding-left: var(--product-page-spacing-sm);
        margin-left: var(--product-page-spacing-sm);
    }
}

/* 13. Animation Enhancements */
@keyframes product-page-fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-page-main,
.product-sidebar-widget {
    animation: product-page-fade-in 0.6s ease-out;
}

.product-related-card {
    animation: product-page-fade-in 0.6s ease-out;
    animation-delay: calc(var(--index, 0) * 0.1s);
}

/* 14. Loading States */
.product-page-loading {
    opacity: 0.6;
    pointer-events: none;
}

.product-page-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid var(--primary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: product-page-spin 1s linear infinite;
}

@keyframes product-page-spin {
    to {
        transform: rotate(360deg);
    }
}

/* 15. Print Styles */
@media print {
    .product-page-sidebar,
    .product-page-actions,
    .product-rating-form,
    .form-actions,
    .review-actions,
    .comment-actions {
        display: none !important;
    }

    .product-page {
        padding: 0;
    }

    .product-page-layout {
        grid-template-columns: 1fr;
        gap: var(--product-page-spacing-md);
    }
}