/* ============================================
   PRODUCT DETAILS PAGE - Modern Design
   Shek's House - Premium E-commerce
   ============================================ */

/* Page Layout */
.product-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 100px 20px 40px;
}

.product-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

/* ============================================
   PRODUCT GALLERY
   ============================================ */
.product-gallery {
    position: sticky;
    top: 100px;
}

.main-image-wrapper {
    position: relative;
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.main-image {
    width: 100%;
    height: 500px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
    cursor: zoom-in;
}

.main-image-wrapper:hover .main-image {
    transform: scale(1.02);
}

.image-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #1a1a1a;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    opacity: 0;
}

.main-image-wrapper:hover .gallery-nav {
    opacity: 1;
}

.gallery-nav:hover {
    background: var(--primary, #ff4500);
    color: #fff;
    transform: translateY(-50%) scale(1.1);
}

.gallery-prev {
    left: 20px;
}

.gallery-next {
    right: 20px;
}

/* Thumbnail Gallery */
.thumbnail-gallery {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    padding: 10px;
    overflow-x: auto;
    scrollbar-width: none;
}

.thumbnail-gallery::-webkit-scrollbar {
    display: none;
}

.thumbnail-item {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.3s ease;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.thumbnail-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.thumbnail-item.active {
    border-color: var(--primary, #ff4500);
}

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

/* ============================================
   PRODUCT INFO PANEL
   ============================================ */
.product-info-panel {
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

.skeleton-title {
    height: 36px;
    width: 80%;
}

.skeleton-price {
    height: 48px;
    width: 40%;
}

.skeleton-text {
    height: 20px;
    width: 100%;
}

.skeleton-text.short {
    width: 60%;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Product Category */
.product-category {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 69, 0, 0.1);
    color: var(--primary, #ff4500);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.product-category i {
    font-size: 12px;
}

/* Product Title */
.product-title {
    font-size: 32px;
    font-weight: 800;
    color: #1a1a1a;
    line-height: 1.3;
    margin: 0 0 20px;
}

/* Price Section */
.product-price-section {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid #eee;
}

.product-price {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary, #ff4500);
}

.price-note {
    font-size: 13px;
    color: #888;
}

/* Description */
.product-description {
    margin-bottom: 24px;
}

.product-description p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin: 0;
}

/* Stock Indicator */
.stock-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.stock-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
}

.stock-badge.in-stock {
    background: rgba(39, 174, 96, 0.1);
    color: #27ae60;
}

.stock-badge.low-stock {
    background: rgba(241, 196, 15, 0.1);
    color: #f39c12;
}

.stock-badge.out-of-stock {
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
}

.stock-count {
    font-size: 14px;
    color: #888;
}

/* Quantity Selector */
.quantity-selector {
    margin-bottom: 24px;
}

.quantity-selector label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.quantity-controls {
    display: inline-flex;
    align-items: center;
    background: #f5f5f5;
    border-radius: 12px;
    padding: 6px;
}

.qty-btn {
    width: 44px;
    height: 44px;
    border: none;
    background: #e0e0e0;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #1a1a1a;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.qty-btn:hover {
    background: var(--primary, #ff4500);
    color: #fff;
    transform: scale(1.05);
}

.qty-btn:active {
    transform: scale(0.95);
}

#quantity-input {
    width: 60px;
    height: 44px;
    border: none;
    background: transparent;
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
    font-family: inherit;
}

/* Add to Cart Button */
.btn-add-to-cart {
    width: 100%;
    padding: 18px 32px;
    background: linear-gradient(135deg, var(--primary, #ff4500) 0%, #ff6b35 100%);
    border: none;
    border-radius: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(255, 69, 0, 0.3);
    margin-bottom: 32px;
}

.btn-add-to-cart:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 69, 0, 0.4);
}

.btn-add-to-cart:active {
    transform: translateY(0);
}

.btn-add-to-cart .btn-content {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    font-size: 17px;
    font-weight: 700;
}

.btn-add-to-cart .btn-content i {
    font-size: 20px;
}

.btn-add-to-cart .btn-price {
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 18px;
    border-radius: 10px;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
}

/* Product Features */
.product-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 24px;
    border-top: 1px solid #eee;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: #f0f0f0;
    transform: translateX(5px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary, #ff4500) 0%, #ff6b35 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
}

.feature-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.feature-title {
    font-size: 15px;
    font-weight: 600;
    color: #1a1a1a;
}

.feature-desc {
    font-size: 13px;
    color: #888;
}

/* Error State */
.error-state {
    text-align: center;
    padding: 60px 20px;
}

.error-state i {
    font-size: 64px;
    color: #e74c3c;
    margin-bottom: 24px;
}

.error-state h3 {
    font-size: 24px;
    color: #1a1a1a;
    margin: 0 0 12px;
}

.error-state p {
    font-size: 15px;
    color: #888;
    margin: 0 0 24px;
}

.btn-back-home {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--primary, #ff4500) 0%, #ff6b35 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-back-home:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 69, 0, 0.3);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
#toast-container {
    position: fixed;
    bottom: 100px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: #1a1a1a;
    color: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    animation: slideIn 0.3s ease;
    max-width: 350px;
}

.toast-success {
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
}

.toast-error {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
}

.toast-info {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
}

.toast i {
    font-size: 20px;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100px);
    }
}

/* Toast with cart icon animation */
.toast-success .cart-fly {
    animation: cartBounce 0.5s ease;
}

@keyframes cartBounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.3); }
}

/* ============================================
   IMAGE LIGHTBOX
   ============================================ */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    animation: lightboxZoom 0.3s ease;
}

@keyframes lightboxZoom {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.lightbox-image {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.lightbox-nav:hover {
    background: var(--primary, #ff4500);
}

.lightbox-prev {
    left: -70px;
}

.lightbox-next {
    right: -70px;
}

.lightbox-counter {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    font-weight: 500;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .product-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-gallery {
        position: relative;
        top: 0;
    }

    .main-image {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .product-page {
        padding: 80px 16px 30px;
    }

    .product-info-panel {
        padding: 28px;
        border-radius: 16px;
    }

    .main-image-wrapper {
        border-radius: 16px;
    }

    .main-image {
        height: 350px;
    }

    .product-title {
        font-size: 26px;
    }

    .product-price {
        font-size: 30px;
    }

    .gallery-nav {
        width: 40px;
        height: 40px;
        font-size: 14px;
        opacity: 1;
    }

    .thumbnail-item {
        width: 65px;
        height: 65px;
    }

    .btn-add-to-cart {
        flex-direction: column;
        gap: 12px;
        padding: 16px 24px;
    }

    .btn-add-to-cart .btn-price {
        width: 100%;
        text-align: center;
    }

    .product-features {
        gap: 12px;
    }

    .feature-item {
        padding: 14px;
    }

    .feature-icon {
        width: 42px;
        height: 42px;
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .main-image {
        height: 280px;
    }

    .product-title {
        font-size: 22px;
    }

    .product-price {
        font-size: 26px;
    }

    .product-price-section {
        flex-direction: column;
        gap: 4px;
        align-items: flex-start;
    }

    .quantity-controls {
        width: 100%;
        justify-content: space-between;
    }

    #quantity-input {
        flex: 1;
    }

    #toast-container {
        left: 16px;
        right: 16px;
        bottom: 90px;
    }

    .toast {
        max-width: 100%;
    }
}

/* ============================================
   PRODUCT LIKES / DISLIKES
   ============================================ */
.product-likes {
    display: flex;
    gap: 12px;
    margin-left: auto;
}

.like-btn,
.dislike-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 2px solid transparent;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.like-btn {
    background: rgba(39, 174, 96, 0.15);
    color: #27ae60;
    border-color: rgba(39, 174, 96, 0.3);
}

.dislike-btn {
    background: rgba(231, 76, 60, 0.15);
    color: #e74c3c;
    border-color: rgba(231, 76, 60, 0.3);
}

.like-btn:hover {
    background: rgba(39, 174, 96, 0.25);
    border-color: #27ae60;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

.dislike-btn:hover {
    background: rgba(231, 76, 60, 0.25);
    border-color: #e74c3c;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.like-btn.active {
    background: #27ae60;
    border-color: #27ae60;
    color: #fff;
    box-shadow: 0 4px 15px rgba(39, 174, 96, 0.4);
}

.dislike-btn.active {
    background: #e74c3c;
    border-color: #e74c3c;
    color: #fff;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
}

.like-btn i,
.dislike-btn i {
    font-size: 16px;
}

/* ============================================
   COMMENTS SECTION
   ============================================ */
.comments-section {
    max-width: 1200px;
    margin: 40px auto 0;
    background: #fff;
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.comments-section h3 {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.comments-section h3 i {
    color: var(--primary, #ff4500);
}

.comments-section h3 span {
    font-size: 16px;
    color: #888;
    font-weight: 500;
}

/* Add Comment Form */
.add-comment-form {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid #eee;
}

.add-comment-form textarea {
    flex: 1;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-family: inherit;
    font-size: 14px;
    resize: none;
    min-height: 50px;
    max-height: 120px;
    transition: border-color 0.3s ease;
}

.add-comment-form textarea:focus {
    outline: none;
    border-color: var(--primary, #ff4500);
}

.btn-submit-comment {
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--primary, #ff4500) 0%, #ff6b35 100%);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.btn-submit-comment:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 69, 0, 0.3);
}

.btn-submit-comment:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.login-prompt {
    text-align: center;
    color: #888;
    font-size: 14px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
    margin-bottom: 24px;
}

.login-prompt a {
    color: var(--primary, #ff4500);
    text-decoration: none;
    font-weight: 600;
}

.login-prompt a:hover {
    text-decoration: underline;
}

/* Comments List */
.comments-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.no-comments,
.error-comments {
    text-align: center;
    color: #888;
    font-size: 14px;
    padding: 40px 20px;
}

.comment-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 14px;
    transition: all 0.3s ease;
    position: relative;
}

.comment-item:hover {
    background: #f0f0f0;
}

.comment-avatar {
    flex-shrink: 0;
}

.comment-avatar img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.comment-content {
    flex: 1;
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.comment-author {
    font-size: 15px;
    font-weight: 600;
    color: #1a1a1a;
}

.comment-date {
    font-size: 12px;
    color: #888;
}

.comment-text {
    font-size: 14px;
    color: #555;
    line-height: 1.6;
    margin: 0;
}

.delete-comment-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: #ccc;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.delete-comment-btn:hover {
    color: #e74c3c;
    background: rgba(231, 76, 60, 0.1);
}

/* ============================================
   ADMIN AUDIT SECTION
   ============================================ */
.admin-audit-section {
    max-width: 1200px;
    margin: 40px auto 0;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.admin-audit-section h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-audit-section h3 i {
    color: var(--primary, #ff4500);
}

.audit-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.no-audit {
    color: #888;
    font-size: 14px;
    text-align: center;
    padding: 20px;
}

.audit-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border-left: 4px solid #888;
}

.audit-item.created {
    border-left-color: #27ae60;
}

.audit-item.modified {
    border-left-color: #f39c12;
}

.audit-item.deleted {
    border-left-color: #e74c3c;
}

.audit-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
}

.audit-item.created .audit-icon {
    color: #27ae60;
}

.audit-item.modified .audit-icon {
    color: #f39c12;
}

.audit-item.deleted .audit-icon {
    color: #e74c3c;
}

.audit-info {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 16px;
}

.audit-action {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
}

.audit-admin {
    font-size: 13px;
    color: #aaa;
}

.audit-date {
    font-size: 12px;
    color: #888;
    margin-left: auto;
}

/* Responsive adjustments for social features */
@media (max-width: 768px) {
    .product-price-section {
        flex-wrap: wrap;
    }

    .product-likes {
        width: 100%;
        margin-left: 0;
        margin-top: 12px;
    }

    .comments-section,
    .admin-audit-section {
        margin: 24px 16px 0;
        padding: 24px;
        border-radius: 16px;
    }

    .add-comment-form {
        flex-direction: column;
    }

    .btn-submit-comment {
        width: 100%;
        justify-content: center;
    }

    .comment-item {
        flex-direction: column;
        gap: 12px;
    }

    .comment-avatar img {
        width: 40px;
        height: 40px;
    }

    .audit-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .audit-date {
        margin-left: 0;
    }
}

/* ============================================
   SIZE SELECTOR (Product Details Page)
   ============================================ */
.size-selector {
    margin: 20px 0;
    padding: 16px;
    background: #f9f9f9;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-lighter);
}

.size-selector-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    flex-wrap: wrap;
    gap: 8px;
}

.size-selector-header label {
    font-size: 14px;
    font-weight: 700;
    color: var(--dark);
}

.size-required {
    color: var(--primary);
    margin-left: 2px;
}

.size-guide-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.size-guide-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.size-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.size-option-btn {
    min-width: 52px;
    height: 48px;
    padding: 0 14px;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius-md);
    background: var(--white);
    color: var(--dark);
    font-size: 14px;
    font-weight: 700;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.size-option-btn:not(.selected):not(:disabled):hover {
    border-color: #ccc;
    background: #f5f5f5;
}

.size-option-btn.selected {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
    color: var(--white) !important;
    box-shadow: var(--shadow-primary);
    transform: translateY(-2px);
}

.size-option-btn.size-out-of-stock {
    opacity: 0.35;
    cursor: not-allowed;
    text-decoration: line-through;
    background: #f5f5f5;
    color: var(--gray-light);
}

/* ============================================
   SIZE GUIDE MODAL
   ============================================ */
.size-guide-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(4px);
}

.size-guide-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 560px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: slideUp 0.25s ease;
}

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

.size-guide-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-lighter);
}

.size-guide-header h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--dark);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.size-guide-header h3 i {
    color: var(--primary);
}

.size-guide-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--gray-lighter);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--gray);
    transition: all var(--transition-fast);
}

.size-guide-close:hover {
    background: var(--primary);
    color: var(--white);
}

.size-guide-tabs {
    display: flex;
    gap: 0;
    padding: 16px 24px 0;
    border-bottom: 1px solid var(--gray-lighter);
}

.size-tab {
    padding: 10px 20px;
    border: none;
    background: transparent;
    font-size: 14px;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    color: var(--gray);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

.size-tab:hover {
    color: var(--dark);
}

.size-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.size-guide-table-wrapper {
    padding: 16px 24px;
    overflow-x: auto;
}

.size-guide-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.size-guide-table th {
    padding: 10px 12px;
    text-align: left;
    font-size: 12px;
    font-weight: 700;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: #f9f9f9;
    border-bottom: 2px solid var(--gray-lighter);
}

.size-guide-table td {
    padding: 12px 12px;
    border-bottom: 1px solid var(--gray-lighter);
    color: var(--dark);
    font-weight: 500;
}

.size-guide-table tr:last-child td {
    border-bottom: none;
}

.size-guide-table tr:hover td {
    background: rgba(255, 69, 0, 0.03);
}

.size-badge-sm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 28px;
    padding: 0 8px;
    background: var(--primary);
    color: var(--white);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
}

.size-guide-note {
    margin: 0;
    padding: 14px 24px;
    background: #fff8f5;
    border-top: 1px solid #ffe0d0;
    font-size: 12px;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 8px;
}

.size-guide-note i {
    color: var(--primary);
    font-size: 14px;
    flex-shrink: 0;
}