/* ═══════════════════════════════════════════
   SAHAR PARTS - PRODUCT PAGE STYLES
   Fully standalone with hardcoded fallbacks.
   Uses --sp-product-* variables from database settings.
   ═══════════════════════════════════════════ */

.product-page {
    /* ===== General ===== */
    --sp-bg: var(--sp-product-page_bg, #ffffff);
    --sp-text: var(--sp-product-page_text_color, #333333);
    --sp-font: var(--sp-product-page_font_family, inherit);
    --sp-primary: #0d0d0d;
    --sp-primary-hover: #b8890f;
    --sp-secondary: var(--sp-product-price_final_color, #D4A017);
    --sp-text-light: var(--sp-product-price_original_color, #666666);
    --sp-text-muted: var(--sp-product-rating_star_inactive_color, #999999);
    --sp-success: var(--sp-product-stock_in_stock_color, #28a745);
    --sp-danger: var(--sp-product-stock_out_of_stock_color, #dc3545);
    --sp-warning: var(--sp-product-rating_star_color, #ffc107);
    --sp-info: #17a2b8;
    --sp-shadow-sm: 0 2px 8px rgba(50, 65, 83, 0.08);
    --sp-shadow-md: 0 4px 20px rgba(50, 65, 83, 0.12);
    --sp-shadow-lg: 0 8px 32px rgba(50, 65, 83, 0.16);
    --sp-dark-bg: #1a1a2e;
    --sp-dark-card: #2d3748;
    --sp-dark-border: #4a5568;

    /* ===== Breadcrumb ===== */
    --sp-breadcrumb-bg: var(--sp-product-breadcrumb_bg, #f8f9fa);
    --sp-breadcrumb-radius: var(--sp-product-breadcrumb_radius, 10px);
    --sp-breadcrumb-link: var(--sp-product-breadcrumb_link_color, #0d0d0d);
    --sp-breadcrumb-link-hover: var(--sp-product-breadcrumb_link_hover_color, #D4A017);
    --sp-breadcrumb-font-size: var(--sp-product-breadcrumb_font_size, 0.9rem);
    --sp-breadcrumb-gap: var(--sp-product-breadcrumb_gap, 10px);

    /* ===== Image ===== */
    --sp-image-bg: var(--sp-product-image_section_bg, #ffffff);
    --sp-image-border-color: var(--sp-product-image_border_color, #e0e0e0);
    --sp-image-radius: var(--sp-product-image_border_radius, 12px);
    --sp-image-hover-bg: var(--sp-product-image_hover_bg, #f8f9fa);
    --sp-image-aspect: var(--sp-product-image_hover_aspect_ratio, 4/3);
    --sp-thumb-radius: var(--sp-product-image_gallery_thumb_radius, 8px);
    --sp-thumb-border-color: var(--sp-product-image_gallery_thumb_border_color, #D4A017);
    --sp-noimage-bg: var(--sp-product-image_no_image_bg, #f8f9fa);
    --sp-noimage-color: var(--sp-product-image_no_image_color, #666666);

    /* ===== Title ===== */
    --sp-title-color: var(--sp-product-title_color, #0d0d0d);
    --sp-title-size: var(--sp-product-title_font_size, 2rem);
    --sp-title-weight: var(--sp-product-title_font_weight, 800);
    --sp-title-margin: var(--sp-product-title_margin_bottom, 15px);

    /* ===== Meta ===== */
    --sp-meta-gap: var(--sp-product-meta_gap, 15px);
    --sp-cat-badge-bg: var(--sp-product-category_badge_bg, linear-gradient(135deg, #1a202c, #2c3949));
    --sp-cat-badge-color: var(--sp-product-category_badge_color, #ffffff);
    --sp-cat-badge-radius: var(--sp-product-category_badge_radius, 20px);
    --sp-cat-badge-size: var(--sp-product-category_badge_font_size, 0.85rem);
    --sp-rating-star-color: var(--sp-product-rating_star_color, #ffc107);
    --sp-rating-star-muted: var(--sp-product-rating_star_inactive_color, #999999);
    --sp-rating-text-color: var(--sp-product-rating_text_color, #666666);

    /* ===== Description ===== */
    --sp-desc-bg: var(--sp-product-desc_section_bg, #ffffff);
    --sp-desc-border-color: var(--sp-product-desc_section_border_color, #e0e0e0);
    --sp-desc-radius: var(--sp-product-desc_section_radius, 12px);
    --sp-desc-color: var(--sp-product-desc_text_color, #333333);
    --sp-desc-line-height: var(--sp-product-desc_text_line_height, 1.8);
    --sp-desc-max-height: var(--sp-product-desc_max_height, 120px);
    --sp-desc-toggle-color: var(--sp-product-desc_toggle_color, #D4A017);
    --sp-desc-toggle-hover-color: var(--sp-product-desc_toggle_hover_color, #0d0d0d);
    --sp-desc-toggle-hover-bg: var(--sp-product-desc_toggle_hover_bg, #f8f9fa);

    /* ===== Price ===== */
    --sp-price-bg: var(--sp-product-price_section_bg, #f8f9fa);
    --sp-price-border-color: var(--sp-product-price_section_border_color, #e0e0e0);
    --sp-price-radius: var(--sp-product-price_section_radius, 12px);
    --sp-price-label-color: var(--sp-product-price_label_color, #333333);
    --sp-price-original-color: var(--sp-product-price_original_color, #666666);
    --sp-price-original-size: var(--sp-product-price_original_font_size, 1.1rem);
    --sp-price-final-color: var(--sp-product-price_final_color, #D4A017);
    --sp-price-final-size: var(--sp-product-price_final_font_size, 1.5rem);
    --sp-discount-badge-bg: var(--sp-product-price_discount_badge_bg, #28a745);
    --sp-discount-badge-color: var(--sp-product-price_discount_badge_color, #ffffff);
    --sp-discount-badge-radius: var(--sp-product-price_discount_badge_radius, 15px);

    /* ===== Stock ===== */
    --sp-stock-in-bg: var(--sp-product-stock_in_stock_bg, rgba(40, 167, 69, 0.1));
    --sp-stock-in-color: var(--sp-product-stock_in_stock_color, #28a745);
    --sp-stock-in-border: var(--sp-product-stock_in_stock_border, rgba(40, 167, 69, 0.2));
    --sp-stock-out-bg: var(--sp-product-stock_out_of_stock_bg, rgba(220, 53, 69, 0.1));
    --sp-stock-out-color: var(--sp-product-stock_out_of_stock_color, #dc3545);
    --sp-stock-out-border: var(--sp-product-stock_out_of_stock_border, rgba(220, 53, 69, 0.2));
    --sp-stock-radius: var(--sp-product-stock_badge_radius, 20px);

    /* ===== Bulk ===== */
    --sp-bulk-bg: var(--sp-product-bulk_bg, #f8f9fa);
    --sp-bulk-border-color: var(--sp-product-bulk_border_color, #e0e0e0);
    --sp-bulk-radius: var(--sp-product-bulk_radius, 12px);
    --sp-bulk-title-color: var(--sp-product-bulk_title_color, #0d0d0d);
    --sp-bulk-list-color: var(--sp-product-bulk_list_text_color, #333333);
    --sp-bulk-list-border: var(--sp-product-bulk_list_border_color, #e0e0e0);
    --sp-bulk-arrow-color: var(--sp-product-bulk_arrow_color, #28a745);

    /* ===== Qty Controls ===== */
    --sp-qty-btn-border: var(--sp-product-qty_btn_border, #e0e0e0);
    --sp-qty-btn-bg: var(--sp-product-qty_btn_bg, #ffffff);
    --sp-qty-btn-radius: var(--sp-product-qty_btn_radius, 8px);
    --sp-qty-btn-color: var(--sp-product-qty_btn_color, #333333);
    --sp-qty-btn-hover-border: var(--sp-product-qty_btn_hover_border, #D4A017);
    --sp-qty-btn-hover-color: var(--sp-product-qty_btn_hover_color, #D4A017);
    --sp-qty-input-border: var(--sp-product-qty_input_border, #e0e0e0);
    --sp-qty-input-radius: var(--sp-product-qty_input_radius, 8px);
    --sp-qty-input-size: var(--sp-product-qty_input_font_size, 1.1rem);
    --sp-qty-input-focus-border: var(--sp-product-qty_input_focus_border, #D4A017);

    /* ===== Buttons ===== */
    --sp-btn-radius: var(--sp-product-btn_radius, 8px);
    --sp-btn-size: var(--sp-product-btn_font_size, 1rem);
    --sp-btn-weight: var(--sp-product-btn_font_weight, 600);
    --sp-btn-primary-bg: var(--sp-product-btn_primary_bg, linear-gradient(135deg, #D4A017, #b8890f));
    --sp-btn-primary-color: var(--sp-product-btn_primary_color, #ffffff);
    --sp-btn-secondary-bg: var(--sp-product-btn_secondary_bg, #f8f9fa);
    --sp-btn-secondary-color: var(--sp-product-btn_secondary_color, #333333);
    --sp-btn-secondary-border: var(--sp-product-btn_secondary_border, #e0e0e0);
    --sp-btn-secondary-hover-bg: var(--sp-product-btn_secondary_hover_bg, #ffffff);
    --sp-btn-secondary-hover-border: var(--sp-product-btn_secondary_hover_border, #D4A017);
    --sp-btn-secondary-hover-color: var(--sp-product-btn_secondary_hover_color, #D4A017);

    /* ===== Reviews ===== */
    --sp-reviews-bg: var(--sp-product-reviews_section_bg, #ffffff);
    --sp-reviews-border: var(--sp-product-reviews_section_border, #e0e0e0);
    --sp-reviews-radius: var(--sp-product-reviews_section_radius, 12px);
    --sp-reviews-max-width: var(--sp-product-reviews_section_max_width, 800px);
    --sp-reviews-header-border: var(--sp-product-reviews_header_border, #f8f9fa);
    --sp-reviews-title-color: var(--sp-product-reviews_header_title_color, #0d0d0d);
    --sp-reviews-form-bg: var(--sp-product-reviews_form_bg, #f8f9fa);
    --sp-reviews-form-border: var(--sp-product-reviews_form_border, #e0e0e0);
    --sp-reviews-form-radius: var(--sp-product-reviews_form_radius, 12px);
    --sp-reviews-form-title-color: var(--sp-product-reviews_form_title_color, #0d0d0d);
    --sp-reviews-input-border: var(--sp-product-reviews_input_border, #e0e0e0);
    --sp-reviews-input-radius: var(--sp-product-reviews_input_radius, 8px);
    --sp-reviews-input-focus-border: var(--sp-product-reviews_input_focus_border, #D4A017);
    --sp-reviews-label-color: var(--sp-product-reviews_input_label_color, #333333);
    --sp-alert-info-bg: var(--sp-product-reviews_alert_info_bg, rgba(23, 162, 184, 0.1));
    --sp-alert-info-color: var(--sp-product-reviews_alert_info_color, #17a2b8);
    --sp-review-item-bg: var(--sp-product-reviews_item_bg, #f8f9fa);
    --sp-review-item-radius: var(--sp-product-reviews_item_radius, 12px);
    --sp-review-item-border-right: var(--sp-product-reviews_item_border_right, #D4A017);
    --sp-review-author-color: var(--sp-product-reviews_author_color, #0d0d0d);
    --sp-review-date-color: var(--sp-product-reviews_date_color, #666666);
    --sp-review-comment-color: var(--sp-product-reviews_comment_color, #333333);

    /* ===== Related ===== */
    --sp-related-border-top: var(--sp-product-related_border_top, #f8f9fa);
    --sp-related-title-color: var(--sp-product-related_title_color, #0d0d0d);
    --sp-related-title-size: var(--sp-product-related_title_font_size, 1.5rem);
    --sp-related-grid-gap: var(--sp-product-related_grid_gap, 25px);
    --sp-card-bg: var(--sp-product-related_card_bg, #ffffff);
    --sp-card-radius: var(--sp-product-related_card_radius, 12px);
    --sp-card-shadow: var(--sp-product-related_card_shadow, 0 2px 8px rgba(50, 65, 83, 0.08));
    --sp-card-hover-shadow: var(--sp-product-related_card_hover_shadow, 0 4px 20px rgba(50, 65, 83, 0.12));
    --sp-card-border: var(--sp-product-related_card_border, #e0e0e0);
    --sp-card-hover-translate: var(--sp-product-related_card_hover_translate, -5px);
    --sp-card-image-height: var(--sp-product-related_card_image_height, 200px);
    --sp-card-image-radius: var(--sp-product-related_card_image_radius, 8px);
    --sp-card-image-bg: var(--sp-product-related_card_image_bg, #f8f9fa);
    --sp-card-title-color: var(--sp-product-related_card_title_color, #0d0d0d);
    --sp-card-price-color: var(--sp-product-related_card_price_color, #D4A017);
    --sp-card-title-size: var(--sp-product-related_card_title_font_size, 1rem);

    /* ===== Radius defaults ===== */
    --sp-radius: var(--sp-product-image_border_radius, 8px);
    --sp-radius-lg: var(--sp-product-image_border_radius, 12px);

    font-family: var(--sp-font);
    background-color: var(--sp-bg);
    color: var(--sp-text);
    line-height: 1.6;
}

.product-page :focus {
    outline: 2px solid var(--sp-secondary);
    outline-offset: 2px;
}

.product-page :focus:not(:focus-visible) {
    outline: none;
}

.product-page :focus-visible {
    outline: 2px solid var(--sp-secondary);
    outline-offset: 3px;
    box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.3);
}

/* ===== Breadcrumb ===== */
.product-page .breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--sp-breadcrumb-gap);
    margin-bottom: 30px;
    padding: 15px 20px;
    background: var(--sp-breadcrumb-bg);
    border-radius: var(--sp-breadcrumb-radius);
    font-size: var(--sp-breadcrumb-font-size);
}

.product-page .breadcrumb a {
    color: var(--sp-breadcrumb-link);
    text-decoration: none;
    transition: color 0.3s ease;
}

.product-page .breadcrumb a:hover {
    color: var(--sp-breadcrumb-link-hover);
    text-decoration: underline;
}

.product-page .breadcrumb .breadcrumb-item + .breadcrumb-item::before {
    content: "\f053";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    font-size: 0.8rem;
    color: var(--sp-text-light);
}

.flash-message {
    padding: 15px 20px;
    border-radius: var(--sp-radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.flash-success {
    background: rgba(40, 167, 69, 0.1);
    color: var(--sp-success);
    border: 1px solid rgba(40, 167, 69, 0.2);
}

.flash-error {
    background: rgba(220, 53, 69, 0.1);
    color: var(--sp-danger);
    border: 1px solid rgba(220, 53, 69, 0.2);
}

/* ===== Product Layout ===== */
.product-page .product-container {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-top: 30px;
}

.product-page .product-image-section {
    flex: 1;
    min-width: 320px;
    max-width: 100%;
}

/* ===== Product Image ===== */
.product-page .product-image {
    width: 100%;
    text-align: center;
    background: var(--sp-image-bg);
    padding: 15px;
    border-radius: var(--sp-image-radius);
    border: 1px solid var(--sp-image-border-color);
    position: relative;
}

.product-page .image-hover-container {
    border-radius: var(--sp-radius-lg);
    position: relative;
    width: 100%;
    aspect-ratio: var(--sp-image-aspect);
    overflow: hidden;
    background: var(--sp-image-hover-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-page .image-hover-container .image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-page .image-hover-container img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    backface-visibility: hidden;
    transform-style: preserve-3d;
    border-radius: var(--sp-radius);
    cursor: zoom-in;
    will-change: transform, opacity;
}

.product-page .image-hover-container .primary-image {
    opacity: 1;
    transform: translate(-50%, -50%) rotateY(0deg);
    z-index: 2;
}

.product-page .image-hover-container .secondary-image {
    opacity: 0;
    transform: translate(-50%, -50%) rotateY(-180deg);
    z-index: 1;
}

.product-page .product-image .image-hover-container:hover .primary-image {
    transform: translate(-50%, -50%) rotateY(180deg);
    opacity: 0;
}

.product-page .product-image .image-hover-container:hover .secondary-image {
    transform: translate(-50%, -50%) rotateY(0deg);
    opacity: 1;
}

:root .product-page .product-image img.zoomed {
    transform: translate(-50%, -50%) scale(1.8);
    opacity: 1;
    z-index: 1000;
    cursor: zoom-out;
    box-shadow: var(--sp-shadow-lg);
}

:root .product-page .product-image img.zoomed ~ .secondary-image {
    opacity: 0;
    transform: translate(-50%, -50%) rotateY(-180deg);
}

.product-page .no-image {
    width: 100%;
    height: 250px;
    background: var(--sp-noimage-bg);
    border-radius: var(--sp-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sp-noimage-color);
    font-size: 2.5rem;
    aspect-ratio: 4/3;
}

.product-page .gallery-thumb {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    border-radius: var(--sp-thumb-radius);
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    background: var(--sp-image-hover-bg);
}

.product-page .gallery-thumb:hover,
.product-page .gallery-thumb.active {
    border-color: var(--sp-thumb-border-color);
}

.product-page .section-title {
    color: var(--sp-primary);
    margin-bottom: 15px;
    font-size: 1.3rem;
    font-weight: 700;
    scroll-margin-top: 20px;
}

/* ===== Description ===== */
.product-page .description {
    margin-top: 25px;
    background: var(--sp-desc-bg);
    padding: 20px;
    width: 100%;
    max-width: 100%;
    border-radius: var(--sp-desc-radius);
    border: 1px solid var(--sp-desc-border-color);
}

#product-desc {
    line-height: var(--sp-desc-line-height);
    color: var(--sp-desc-color);
    margin-bottom: 10px;
    max-height: var(--sp-desc-max-height);
    overflow: hidden;
    transition: max-height 0.3s ease;
    text-align: justify;
}

#product-desc.expanded {
    max-height: none;
}

#desc-toggle {
    background: none;
    border: none;
    color: var(--sp-desc-toggle-color);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-top: 10px;
    padding: 5px 10px;
    border-radius: 4px;
    transition: color 0.3s ease;
}

#desc-toggle:hover {
    color: var(--sp-desc-toggle-hover-color);
    background: var(--sp-desc-toggle-hover-bg);
}

/* ===== Product Info ===== */
.product-page .product-info {
    flex: 1;
    min-width: 300px;
}

.product-page .product-info h1 {
    color: var(--sp-title-color);
    font-size: var(--sp-title-size);
    font-weight: var(--sp-title-weight);
    margin-bottom: var(--sp-title-margin);
    line-height: 1.3;
}

.product-page .product-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-meta-gap);
    margin-bottom: 20px;
}

.product-page .category-badge {
    background: var(--sp-cat-badge-bg);
    color: var(--sp-cat-badge-color);
    padding: 6px 12px;
    border-radius: var(--sp-cat-badge-radius);
    font-size: var(--sp-cat-badge-size);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.product-page .rating-display {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--sp-rating-text-color);
    font-size: 0.9rem;
}

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

.product-page .stars .fa-star {
    color: var(--sp-rating-star-color);
    font-size: 0.9rem;
}

:root .product-page .stars .text-muted {
    color: var(--sp-rating-star-muted);
}

/* ===== Price Section ===== */
.product-page .price-section {
    background: var(--sp-price-bg);
    padding: 20px;
    border-radius: var(--sp-price-radius);
    margin-bottom: 20px;
    border: 1px solid var(--sp-price-border-color);
}

.product-page .price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.product-page .price-row span:first-child {
    font-weight: 600;
    color: var(--sp-price-label-color);
}

.product-page .original-price {
    text-decoration: line-through;
    color: var(--sp-price-original-color);
    font-size: var(--sp-price-original-size);
    margin-left: 10px;
}

.product-page .final-price {
    font-weight: 800;
    color: var(--sp-price-final-color);
    font-size: var(--sp-price-final-size);
}

.product-page .discount-badge {
    background: var(--sp-discount-badge-bg);
    color: var(--sp-discount-badge-color);
    padding: 4px 10px;
    border-radius: var(--sp-discount-badge-radius);
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: 10px;
}

/* ===== Stock Status ===== */
.product-page .stock-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--sp-stock-radius);
    font-weight: 600;
    margin-bottom: 20px;
}

.product-page .stock-status.in-stock {
    background: var(--sp-stock-in-bg);
    color: var(--sp-stock-in-color);
    border: 1px solid var(--sp-stock-in-border);
}

.product-page .stock-status.out-of-stock {
    background: var(--sp-stock-out-bg);
    color: var(--sp-stock-out-color);
    border: 1px solid var(--sp-stock-out-border);
}

/* ===== Bulk Discount ===== */
.product-page .bulk-discount {
    background: var(--sp-bulk-bg);
    padding: 20px;
    border-radius: var(--sp-bulk-radius);
    margin-bottom: 25px;
    border: 1px solid var(--sp-bulk-border-color);
}

.product-page .bulk-discount h3 {
    color: var(--sp-bulk-title-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-page .bulk-discount ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.product-page .bulk-discount li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    color: var(--sp-bulk-list-color);
    border-bottom: 1px solid var(--sp-bulk-list-border);
}

.product-page .bulk-discount li:last-child {
    border-bottom: none;
}

.product-page .bulk-discount .fa-arrow-left {
    color: var(--sp-bulk-arrow-color);
    font-size: 0.8rem;
}

.product-page .add-to-cart-form {
    margin-bottom: 20px;
}

/* ===== Quantity Controls ===== */
.product-page .quantity-control {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.product-page .qty-btn {
    width: 40px;
    height: 40px;
    border: 2px solid var(--sp-qty-btn-border);
    background: var(--sp-qty-btn-bg);
    border-radius: var(--sp-qty-btn-radius);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sp-qty-btn-color);
}

.product-page .qty-btn:hover {
    border-color: var(--sp-qty-btn-hover-border);
    color: var(--sp-qty-btn-hover-color);
}

.product-page .quantity-input {
    width: 70px;
    height: 40px;
    border: 2px solid var(--sp-qty-input-border);
    border-radius: var(--sp-qty-input-radius);
    text-align: center;
    font-size: var(--sp-qty-input-size);
    font-weight: 600;
}

.product-page .quantity-input:focus {
    outline: none;
    border-color: var(--sp-qty-input-focus-border);
    box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.1);
}

/* ===== Buttons ===== */
.product-page .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--sp-btn-radius);
    font-size: var(--sp-btn-size);
    font-weight: var(--sp-btn-weight);
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.product-page .btn-primary {
    background: var(--sp-btn-primary-bg);
    color: var(--sp-btn-primary-color);
    box-shadow: var(--sp-shadow-md);
}

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

.product-page .btn-secondary {
    background: var(--sp-btn-secondary-bg);
    color: var(--sp-btn-secondary-color);
    border: 1px solid var(--sp-btn-secondary-border);
}

.product-page .btn-secondary:hover {
    background: var(--sp-btn-secondary-hover-bg);
    border-color: var(--sp-btn-secondary-hover-border);
    color: var(--sp-btn-secondary-hover-color);
}

/* ===== Reviews Section ===== */
.product-page .reviews-section {
    width: 100%;
    max-width: var(--sp-reviews-max-width, 800px);
    margin: 40px auto 0;
}

.product-page .reviews-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 18px;
    border-bottom: 2px solid var(--sp-reviews-header-border, #e8e8e8);
    flex-wrap: wrap;
    gap: 12px;
}

.product-page .reviews-header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.product-page .reviews-header h3 {
    color: var(--sp-reviews-title-color, #0d0d0d);
    font-size: 1.4rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.product-page .reviews-add-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: linear-gradient(135deg, var(--sp-btn-primary-bg, #D4A017), #b8890f);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    font-family: inherit;
}

.product-page .reviews-add-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(212, 160, 23, 0.35);
    color: #fff;
}

.product-page .reviews-header-rating {
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-page .rating-stars {
    color: #f59e0b;
    font-size: 1.1rem;
    letter-spacing: 2px;
}

.product-page .rating-value {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--sp-reviews-title-color, #0d0d0d);
}

.product-page .reviews-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.product-page .review-item {
    background: var(--sp-review-item-bg, #fff);
    padding: 20px 24px;
    border-radius: var(--sp-review-item-radius, 12px);
    border: 1px solid var(--sp-reviews-border, #e8e8e8);
    transition: box-shadow 0.3s ease;
}

.product-page .review-item:hover {
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.product-page .review-item-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

.product-page .review-author-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.product-page .review-author {
    font-weight: 700;
    color: var(--sp-review-author-color, #0d0d0d);
    font-size: 0.95rem;
}

.product-page .review-date {
    color: var(--sp-review-date-color, #999);
    font-size: 0.8rem;
}

.product-page .review-rating-stars {
    color: #f59e0b;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.product-page .review-comment {
    line-height: 1.7;
    color: var(--sp-review-comment-color, #555);
    text-align: justify;
    margin: 0;
    font-size: 0.92rem;
}

.product-page .reviews-empty {
    text-align: center;
    padding: 50px 20px;
}

.product-page .reviews-empty i {
    font-size: 3rem;
    color: #ccc;
    margin-bottom: 15px;
}

.product-page .reviews-empty p {
    color: var(--sp-review-date-color, #999);
    font-size: 1rem;
    margin: 0 0 4px;
}

.product-page .reviews-empty .reviews-empty-hint {
    font-size: 0.85rem;
    color: #bbb;
}

.product-page .reviews-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    background: var(--sp-btn-secondary-bg, #f8f9fa);
    color: var(--sp-btn-secondary-color, #555);
    border: 1px solid var(--sp-btn-secondary-border, #e0e0e0);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.product-page .reviews-toggle-btn:hover {
    background: var(--sp-btn-secondary-hover-bg, #fff);
    border-color: var(--sp-btn-secondary-hover-border, #D4A017);
    color: var(--sp-btn-secondary-hover-color, #D4A017);
}

/* ===== Review Modal ===== */
.review-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.review-modal-box {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    width: 100%;
    max-width: 480px;
    position: relative;
    animation: reviewModalSlideIn 0.3s ease;
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes reviewModalSlideIn {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.review-modal-close {
    position: absolute;
    top: 12px;
    left: 16px;
    background: none;
    border: none;
    font-size: 28px;
    color: #999;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.2s;
    font-family: inherit;
}

.review-modal-close:hover { color: #333; }

.review-modal-header {
    text-align: center;
    margin-bottom: 28px;
}

.review-modal-header i {
    font-size: 36px;
    color: var(--sp-btn-primary-bg, #D4A017);
    margin-bottom: 10px;
}

.review-modal-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: #0d0d0d;
    margin: 0 0 6px;
}

.review-modal-header p {
    font-size: 13px;
    color: #999;
    margin: 0;
}

.review-modal-form-group {
    margin-bottom: 20px;
}

.review-modal-form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

.star-rating {
    cursor: pointer;
    display: flex;
    gap: 6px;
    direction: ltr;
    justify-content: center;
    padding: 8px 0;
}

.star-rating [data-value] {
    display: inline-flex;
    line-height: 1;
}

.star-rating [data-value] i,
.star-rating [data-value] svg {
    color: #ddd;
    font-size: 2rem;
    transition: color 0.2s ease, transform 0.15s ease;
}

.star-rating [data-value][data-hover] i,
.star-rating [data-value][data-hover] svg {
    color: #f59e0b;
    transform: scale(1.15);
}

.star-rating [data-value][data-active] i,
.star-rating [data-value][data-active] svg {
    color: #f59e0b;
}

.review-modal-textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 0.95rem;
    font-family: inherit;
    min-height: 110px;
    resize: vertical;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.review-modal-textarea:focus {
    outline: none;
    border-color: var(--sp-btn-primary-bg, #D4A017);
    box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.1);
}

.review-modal-submit {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--sp-btn-primary-bg, #D4A017), #b8890f);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.review-modal-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 160, 23, 0.35);
}

/* ===== Related Products ===== */
.product-page .related-products {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid var(--sp-related-border-top);
}

.product-page .related-products h3 {
    color: var(--sp-related-title-color);
    margin-bottom: 25px;
    font-size: var(--sp-related-title-size);
    font-weight: 700;
    text-align: center;
}

.product-page .products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--sp-related-grid-gap);
}

.product-page .product-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
}

.product-page .product-card-link:hover {
    color: inherit;
}

.product-page .product-card {
    background: var(--sp-card-bg);
    border-radius: var(--sp-card-radius);
    padding: 15px;
    box-shadow: var(--sp-card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--sp-card-border);
    text-align: center;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-page .product-card:hover {
    transform: translateY(var(--sp-card-hover-translate));
    box-shadow: var(--sp-card-hover-shadow);
}

.product-page .product-card-image {
    width: 100%;
    height: var(--sp-card-image-height);
    margin-bottom: 15px;
    overflow: hidden;
    border-radius: var(--sp-card-image-radius);
    background: var(--sp-card-image-bg);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.product-page .card-image-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: var(--sp-card-image-radius);
}

.product-page .card-image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    backface-visibility: hidden;
}

.product-page .card-primary-image {
    opacity: 1;
    transform: scale(1);
    z-index: 2;
}

.product-page .card-secondary-image {
    opacity: 0;
    transform: scale(0.95);
    z-index: 1;
}

.product-page .product-card:hover .card-primary-image {
    opacity: 0;
    transform: scale(0.95);
}

.product-page .product-card:hover .card-secondary-image {
    opacity: 1;
    transform: scale(1);
}

.product-page .product-card h4 {
    color: var(--sp-card-title-color);
    margin-bottom: 10px;
    font-size: var(--sp-card-title-size);
    font-weight: 700;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.4;
    flex-grow: 1;
}

.product-page .product-card .price {
    color: var(--sp-card-price-color);
    font-weight: 800;
    font-size: 1.1rem;
    margin-top: auto;
}

.product-page .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.product-page .items-per-cartoon {
    margin-right: 10px;
    color: var(--sp-text-light);
    font-size: 0.9em;
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    :root .product-page *,
    :root .product-page *::before,
    :root .product-page *::after {
        animation-duration: 0.01ms;
        animation-iteration-count: 1;
        transition-duration: 0.01ms;
    }
    :root .product-page .image-hover-container img,
    :root .product-page .card-image-container img {
        transition: none;
    }
}

/* ===== Responsive: Tablet ===== */
@media (max-width: 768px) {
    .product-page .product-info h1 {
        font-size: 1.5rem;
    }
    .product-page .reviews-section {
        padding: 20px;
    }
    .product-page .reviews-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .product-page .review-item-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .product-page .price-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    #product-desc {
        max-height: 200px;
    }
    .product-page .product-card-image {
        height: 180px;
    }
    .product-page .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }
}

/* ===== Responsive: Mobile ===== */
@media (max-width: 576px) {
    .product-page .product-meta {
        flex-direction: column;
        gap: 10px;
    }
    .product-page .bulk-discount {
        padding: 15px;
    }
    .product-page .btn {
        width: 100%;
        justify-content: center;
    }
    .product-page .quantity-control {
        justify-content: center;
    }
    .product-page .products-grid {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    .product-page .product-card-image {
        height: 160px;
    }
    .product-page .no-image {
        height: 200px;
        font-size: 2rem;
    }
    #product-desc {
        max-height: 250px;
    }
    .product-page .product-card {
        padding: 12px;
    }
    .product-page .product-card h4 {
        font-size: 0.9rem;
    }
}

/* ===== Dark Mode ===== */
@media (prefers-color-scheme: dark) {
    .product-page {
        --sp-bg: var(--sp-dark-bg);
        --sp-text: #f0f0f0;
        --sp-text-light: #999999;
        --sp-text-muted: #777777;
        --sp-breadcrumb-bg: var(--sp-dark-card);
        --sp-breadcrumb-link: #e0e0e0;
        --sp-image-bg: var(--sp-dark-card);
        --sp-image-border-color: var(--sp-dark-border);
        --sp-image-hover-bg: var(--sp-dark-card);
        --sp-noimage-bg: var(--sp-dark-card);
        --sp-desc-bg: var(--sp-dark-card);
        --sp-desc-border-color: var(--sp-dark-border);
        --sp-desc-toggle-hover-bg: #333333;
        --sp-price-bg: var(--sp-dark-card);
        --sp-price-border-color: var(--sp-dark-border);
        --sp-bulk-bg: var(--sp-dark-card);
        --sp-bulk-border-color: var(--sp-dark-border);
        --sp-bulk-list-border: var(--sp-dark-border);
        --sp-qty-btn-bg: var(--sp-dark-bg);
        --sp-qty-btn-border: var(--sp-dark-border);
        --sp-qty-input-border: var(--sp-dark-border);
        --sp-btn-secondary-bg: var(--sp-dark-card);
        --sp-btn-secondary-border: var(--sp-dark-border);
        --sp-btn-secondary-hover-bg: var(--sp-dark-bg);
        --sp-reviews-header-border: #333333;
        --sp-reviews-border: var(--sp-dark-border);
        --sp-review-item-bg: var(--sp-dark-card);
        --sp-review-comment-color: #ccc;
        --sp-review-author-color: #f0f0f0;
        --sp-related-border-top: #333333;
        --sp-card-bg: var(--sp-dark-card);
        --sp-card-border: var(--sp-dark-border);
        --sp-card-image-bg: var(--sp-dark-bg);
    }
    .product-page .image-hover-container,
    .product-page .card-image-container {
        background: var(--sp-dark-card);
    }
}

/* ===== Print ===== */
@media print {
    :root .product-page .product-card-actions,
    :root .product-page .product-colors,
    :root .product-page .product-description-tabs {
        display: none;
    }
    .product-page .image-hover-container img {
        max-height: 200px;
        page-break-inside: avoid;
    }
    :root .product-page .product-info {
        break-inside: avoid;
        page-break-inside: avoid;
        border: 1px solid #ddd;
        box-shadow: none;
    }
}