/* ===================================
   PRODUCT DETAIL PAGE STYLES
   =================================== */

/* Page Banner */
.page-banner {
    position: relative;
    padding: 12rem 0 8rem;
    background: linear-gradient(135deg, #1D4E89 0%, #2a5f9e 100%);
    margin-top: 112px;
    overflow: hidden;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='50' cy='50' r='40'/%3E%3Ccircle cx='50' cy='50' r='30'/%3E%3Ccircle cx='50' cy='50' r='20'/%3E%3C/g%3E%3C/svg%3E") repeat;
    opacity: 0.4;
}

.banner-container {
    position: relative;
    z-index: 1;
}

.banner-content {
    text-align: center;
    color: white;
}

.banner-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.banner-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.9);
}

/* Product Detail Section */
.product-detail-section {
    padding: 4rem 0 4rem;
    background: white;
    margin-top: 0;
}

.product-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 2rem;
}

/* Product Images */
.product-images {
    position: sticky;
    top: 150px;
    height: fit-content;
}

.product-main-image {
    position: relative;
    background: var(--color-bg-light);
    border-radius: var(--radius-xl);
    padding: 3rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
}

.product-badge-detail {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-primary);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-md);
    z-index: 1;
}

.main-image-placeholder {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-image-placeholder svg {
    max-width: 100%;
    height: auto;
}

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

.thumbnail {
    background: white;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    padding: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
}

.thumbnail:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.thumbnail.active {
    border-color: var(--color-primary);
    background: var(--color-bg-light);
}

.thumbnail svg {
    width: 100%;
    height: auto;
}

/* Product Info */
.product-info-detail {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.product-title-detail {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1.2;
    margin: 0;
}

.product-model {
    font-size: 1rem;
    font-family: 'Courier New', monospace;
    color: var(--color-text-light);
    margin: 0;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.stars {
    display: flex;
    gap: 0.25rem;
}

.rating-count {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.product-excerpt {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-text);
    padding: 1.5rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.product-excerpt p {
    margin: 0;
}

.product-price {
    padding: 1.5rem 0;
}

.price-label {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
}

.product-meta-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.meta-item {
    display: flex;
    gap: 0.5rem;
}

.meta-label {
    font-weight: 600;
    color: var(--color-secondary);
    min-width: 120px;
}

.meta-value {
    color: var(--color-text-light);
}

.meta-value.in-stock {
    color: #28a745;
    font-weight: 600;
}

.product-actions {
    display: flex;
    gap: 1rem;
    padding-top: 1rem;
}

.btn-large {
    padding: 1.125rem 2rem;
    font-size: 1.0625rem;
}

.product-features-quick {
    padding: 2rem;
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.product-features-quick h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-secondary);
}

.product-features-quick ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.product-features-quick li {
    padding: 0.625rem 0;
    padding-left: 1.75rem;
    position: relative;
    color: var(--color-text);
    line-height: 1.6;
}

.product-features-quick li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

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

.tabs-nav {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid rgba(0, 0, 0, 0.1);
    margin-bottom: 3rem;
}

.tab-btn {
    padding: 1rem 2rem;
    background: none;
    border: none;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.tab-btn:hover {
    color: var(--color-primary);
}

.tab-btn.active {
    color: var(--color-primary);
}

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

.tabs-content {
    background: white;
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-pane h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

.tab-pane h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.tab-pane p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

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

.spec-group h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--color-primary);
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.specs-table td {
    padding: 0.875rem 0;
    font-size: 0.9375rem;
}

.specs-table td:first-child {
    color: var(--color-text-light);
    font-weight: 500;
}

.specs-table td:last-child {
    color: var(--color-secondary);
    font-weight: 600;
    text-align: right;
}

/* Applications List */
.applications-list {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
}

.application-item {
    padding: 2rem;
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.application-item h3 {
    font-size: 1.25rem;
    margin-top: 0;
    margin-bottom: 0.75rem;
}

.application-item p {
    margin-bottom: 1rem;
}

.application-item ul {
    margin: 0;
    padding-left: 1.5rem;
}

.application-item li {
    padding: 0.375rem 0;
    color: var(--color-text);
}

/* Downloads List */
.downloads-list {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.download-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.download-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.download-icon {
    flex-shrink: 0;
}

.download-info {
    flex: 1;
}

.download-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: 0.375rem;
}

.download-info p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    margin-bottom: 0.375rem;
}

.download-meta {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-primary);
    color: white;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.download-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

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

.related-products .section-title {
    text-align: center;
    margin-bottom: 3rem;
}

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

.related-product-card {
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-base);
}

.related-product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.related-product-image {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.related-product-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.related-product-code {
    font-size: 0.875rem;
    font-family: 'Courier New', monospace;
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

.related-product-link {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.related-product-link:hover {
    color: var(--color-primary-dark);
    transform: translateX(4px);
}

/* Responsive */
@media (max-width: 1200px) {
    .product-detail-layout {
        gap: 3rem;
    }

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

@media (max-width: 968px) {
    .page-banner {
        padding: 10rem 0 6rem;
    }

    .banner-title {
        font-size: 2.5rem;
    }

    .banner-subtitle {
        font-size: 1.25rem;
    }

    .product-detail-section {
        padding: 3rem 0 3rem;
    }

    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .product-images {
        position: static;
    }

    .product-title-detail {
        font-size: 2rem;
    }

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

    .tabs-nav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        white-space: nowrap;
        padding: 1rem 1.5rem;
    }

    .tabs-content {
        padding: 2rem;
    }

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

@media (max-width: 640px) {
    .page-banner {
        padding: 8rem 0 5rem;
    }

    .banner-title {
        font-size: 2rem;
    }

    .banner-subtitle {
        font-size: 1.125rem;
    }

    .product-title-detail {
        font-size: 1.75rem;
    }

    .product-thumbnails {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.5rem;
    }

    .thumbnail {
        padding: 0.5rem;
    }

    .tabs-content {
        padding: 1.5rem;
    }

    .tab-pane h2 {
        font-size: 1.5rem;
    }

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