.product-page { padding: 0 0 4rem; }

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem 0 2rem;
    font-size: 0.9rem;
    color: var(--medium-gray);
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--medium-gray);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb a:hover { color: var(--primary-color); }
.breadcrumb .separator { color: var(--border-color); font-size: 0.7rem; }
.breadcrumb .current { color: var(--dark-color); font-weight: 500; }

.product-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.product-gallery { position: sticky; top: 100px; align-self: start; }

.main-image-wrapper {
    position: relative;
    border-radius: 1.5rem;
    overflow: hidden;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
}

.main-image {
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    cursor: zoom-in;
}

.main-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s;
}

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

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.4rem 1rem;
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: white;
    z-index: 2;
}

.product-badge.sale { background: var(--danger-color); }
.product-badge.new { background: var(--success-color); }
.product-badge.hit { background: var(--accent-color); }

.gallery-zoom {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: white;
    border: 1px solid var(--border-color);
    color: var(--dark-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 2;
}

.gallery-zoom:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.thumbnail-strip {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.thumbnail {
    width: 70px;
    height: 70px;
    border-radius: 0.75rem;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    background: var(--bg-white);
    flex-shrink: 0;
}

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

.thumbnail:hover,
.thumbnail.active {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,102,204,0.15);
}

.product-header { margin-bottom: 1.5rem; }

.product-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.product-brand i { color: var(--success-color); font-size: 1rem; }

.product-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

.stars { color: var(--warning-color); font-size: 1.1rem; }
.rating-value { font-weight: 700; color: var(--dark-color); }
.reviews-link { color: var(--medium-gray); text-decoration: none; font-size: 0.9rem; }
.reviews-link:hover { color: var(--primary-color); }

.product-price-block {
    background: var(--gradient-subtle);
    border-radius: 1rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.price-main {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    flex-wrap: wrap;
}

.current-price { font-size: 2.5rem; font-weight: 800; color: var(--primary-color); }
.old-price { font-size: 1.2rem; color: var(--medium-gray); text-decoration: line-through; }

.savings {
    background: var(--success-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 600;
    margin-left: auto;
}

.product-availability {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border-radius: 1rem;
    margin-bottom: 1.5rem;
}

.product-availability.in-stock {
    background: linear-gradient(135deg, rgba(0,168,107,0.08) 0%, rgba(0,168,107,0.03) 100%);
    border: 1px solid rgba(0,168,107,0.15);
}

.product-availability.out-of-stock {
    background: linear-gradient(135deg, rgba(220,53,69,0.08) 0%, rgba(220,53,69,0.03) 100%);
    border: 1px solid rgba(220,53,69,0.15);
}

.availability-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.in-stock .availability-icon { background: var(--success-color); color: white; }
.out-of-stock .availability-icon { background: var(--danger-color); color: white; }

.availability-text { display: flex; flex-direction: column; }
.availability-status { font-weight: 700; font-size: 1rem; }
.in-stock .availability-status { color: var(--success-color); }
.out-of-stock .availability-status { color: var(--danger-color); }

.stock-count { font-size: 0.85rem; color: var(--medium-gray); margin-top: 0.2rem; }

.product-actions {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.quantity-selector {
    display: flex;
    align-items: center;
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    overflow: hidden;
    background: var(--bg-white);
}

.qty-btn {
    width: 40px;
    height: 50px;
    border: none;
    background: var(--bg-light);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-color);
    cursor: pointer;
    transition: all 0.2s;
}

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

.qty-input {
    width: 50px;
    height: 50px;
    border: none;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.btn-add-to-cart {
    flex: 1;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.btn-add-to-cart:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,102,204,0.3);
}

.btn-add-to-cart:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-wishlist {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    background: var(--bg-white);
    border-radius: 0.75rem;
    color: var(--medium-gray);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.btn-wishlist:hover { border-color: var(--danger-color); color: var(--danger-color); }

.product-features {
    display: grid;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--bg-white);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-item i {
    width: 24px;
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.feature-item strong { display: block; font-size: 0.9rem; color: var(--dark-color); }
.feature-item span { font-size: 0.85rem; color: var(--medium-gray); }

.product-meta {
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
}

.meta-label { color: var(--medium-gray); font-size: 0.9rem; }
.meta-label i { width: 20px; color: var(--primary-color); }
.meta-value { font-weight: 600; color: var(--dark-color); }

.product-tabs {
    background: var(--bg-white);
    border-radius: 1.5rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 3rem;
}

.tabs-header {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-light);
    overflow-x: auto;
}

.tab-btn {
    padding: 1rem 2rem;
    background: none;
    border: none;
    font-weight: 600;
    color: var(--medium-gray);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    white-space: nowrap;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: white;
}

.tab-btn:hover:not(.active) { color: var(--dark-color); }

.tab-content { display: none; padding: 2rem; }
.tab-content.active { display: block; }

.description-content { line-height: 1.8; color: var(--dark-color); }

.specs-grid { display: grid; gap: 0.5rem; }

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 0.8rem 1rem;
    background: var(--bg-light);
    border-radius: 0.5rem;
}

.spec-item span:first-child { color: var(--medium-gray); }
.spec-item span:last-child { font-weight: 600; }

.reviews-summary {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 1rem;
    margin-bottom: 2rem;
}

.rating-big { text-align: center; }
.rating-number { font-size: 4rem; font-weight: 800; color: var(--dark-color); line-height: 1; }
.rating-stars { color: var(--warning-color); margin: 0.5rem 0; }
.rating-total { color: var(--medium-gray); }

.rating-bars { display: flex; flex-direction: column; gap: 0.5rem; min-width: 0; }

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

.rating-bar-row span:first-child { width: 30px; text-align: right; font-weight: 600; }
.rating-bar-row span:last-child { width: 30px; text-align: left; color: var(--medium-gray); }

.rating-bar-row .bar {
    flex: 1;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.rating-bar-row .fill {
    height: 100%;
    background: var(--warning-color);
    border-radius: 4px;
    transition: width 0.6s ease;
}

.review-card {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.review-card:last-child { border-bottom: none; }

.review-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.review-author { font-weight: 600; }
.review-author i { color: var(--primary-color); margin-right: 0.5rem; }
.review-date { color: var(--medium-gray); font-size: 0.85rem; }
.review-rating { color: var(--warning-color); margin-bottom: 0.5rem; }
.review-text { line-height: 1.6; }

.no-reviews {
    text-align: center;
    padding: 3rem;
    color: var(--medium-gray);
}

.no-reviews i { font-size: 2.5rem; margin-bottom: 1rem; }

.review-form-wrapper {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.review-form .form-group { margin-bottom: 1.5rem; }
.review-form label { display: block; font-weight: 600; margin-bottom: 0.5rem; }

.review-form textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    font-family: inherit;
    resize: vertical;
    box-sizing: border-box;
}

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

.star-rating {
    display: flex;
    gap: 0.5rem;
    font-size: 1.8rem;
    color: var(--border-color);
    cursor: pointer;
}

.star-rating i { transition: color 0.1s; }
.star-rating i.fas { color: var(--warning-color); }
.star-rating i:hover { transform: scale(1.1); }

.btn-submit {
    padding: 0.9rem 2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-submit:hover { background: var(--primary-dark); }

.login-prompt {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 1rem;
}

.login-prompt i { font-size: 2rem; color: var(--medium-gray); margin-bottom: 1rem; }
.login-prompt a { color: var(--primary-color); font-weight: 600; }

.delivery-content h3 {
    margin: 1.5rem 0 1rem;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.delivery-content h3 i { color: var(--primary-color); width: 24px; }
.delivery-content h3:first-child { margin-top: 0; }
.delivery-content ul { list-style: none; padding: 0; }

.delivery-content li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.delivery-content li:last-child { border-bottom: none; }
.delivery-content li i { width: 24px; color: var(--primary-color); flex-shrink: 0; }

.related-products { margin: 3rem 0 2rem; }

.related-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.related-filters {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-light);
    padding: 0.4rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

.related-filter-btn {
    padding: 0.6rem 1.25rem;
    background: transparent;
    border: none;
    border-radius: 0.6rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--medium-gray);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.related-filter-btn i { margin-right: 0.4rem; }
.related-filter-btn:hover { color: var(--dark-color); }

.related-filter-btn.active {
    background: var(--primary-color);
    color: white;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.related-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.related-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-color);
}

.related-card-image {
    position: relative;
    width: 100%;
    height: 200px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.related-card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 1rem;
    transition: transform 0.3s;
}

.related-card:hover .related-card-image img { transform: scale(1.04); }

.related-compatible-badge {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 28px;
    height: 28px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.related-card-body {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.related-card-brand {
    font-size: 0.75rem;
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 0.4rem;
}

.related-card-title {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    flex: 1;
}

.related-card-title a {
    color: var(--dark-color);
    text-decoration: none;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-card-title a:hover { color: var(--primary-color); }

.related-card-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    flex-shrink: 0;
}

.related-current-price {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
}

.related-old-price {
    font-size: 0.8rem;
    color: var(--medium-gray);
    text-decoration: line-through;
}

.related-card-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.related-cart-btn {
    flex: 1;
    padding: 0.6rem 0.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.related-cart-btn:hover:not(:disabled) { background: var(--primary-dark); }
.related-cart-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.related-wishlist-btn {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border-color);
    background: var(--bg-white);
    border-radius: 0.5rem;
    color: var(--medium-gray);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.related-wishlist-btn:hover {
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.alert {
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
}

.alert.success { background: rgba(0,168,107,0.1); color: var(--success-color); }
.alert.error { background: rgba(220,53,69,0.1); color: var(--danger-color); }

.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    align-items: center;
    justify-content: center;
}

.modal-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 40px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10000;
}

.modal-close:hover { color: var(--primary-color); }

.modal-prev,
.modal-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 10000;
}

.modal-prev { left: 20px; }
.modal-next { right: 20px; }
.modal-prev:hover,
.modal-next:hover { background: var(--primary-color); }

.modal-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 1rem;
    background: rgba(0,0,0,0.5);
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}

@media (max-width: 1024px) {
    .product-layout { grid-template-columns: 1fr; }
    .product-gallery { position: static; }
    .related-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .product-title { font-size: 1.5rem; }
    .current-price { font-size: 2rem; }
    
    .product-actions { flex-wrap: wrap; }
    .btn-add-to-cart { flex-basis: 100%; }
    
    .reviews-summary { grid-template-columns: 1fr; gap: 1.5rem; }
    
    .tabs-header { flex-wrap: wrap; }
    .tab-btn { flex: 1; padding: 0.75rem; text-align: center; }
    
    .related-header { flex-direction: column; align-items: flex-start; }
    
    .related-filters {
        width: 100%;
        justify-content: center;
    }
    
    .related-filter-btn {
        flex: 1;
        text-align: center;
        padding: 0.6rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .related-card-image { height: 170px; }
    
    .modal-prev,
    .modal-next { width: 40px; height: 40px; }
}

@media (max-width: 480px) {
    .thumbnail-strip { justify-content: flex-start; overflow-x: auto; }
    .related-grid { grid-template-columns: 1fr; }
    .related-card-image { height: 200px; }
}