/* product-introduction.css - 产品介绍页面样式 */

/* Product Introduction Hero Section */
.product-intro-hero {
    background: linear-gradient(135deg, #0a3dad 0%, #0830a0 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--gray);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.product-intro-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 61, 173, 0.15);
    background-blend-mode: overlay;
    z-index: 0;
}

/* Bluish blurred background layer */
.product-intro-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/product-intro-hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: blur(8px) brightness(0.9);
    z-index: 0;
    /* Add blue tint */
    background-color: rgba(0, 80, 158, 0.3);
    background-blend-mode: overlay;
}

/* Add overlay for better text contrast */
.product-intro-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.1));
    pointer-events: none;
    z-index: 1;
}

.product-intro-hero .container {
    position: relative;
    z-index: 2;
}

/* Product Intro Hero Content */

.product-intro-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 30px;
}

.product-intro-basic {
    flex: 1;
    min-width: 300px;
}

.product-intro-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 15px;
    line-height: 1.2;
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 3;
}

.product-intro-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 3;
}

.product-model, .product-category, .product-availability, .product-customization {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.product-availability {
    color: #a3e4a3;
    font-weight: 500;
}

.product-availability i {
    font-size: 1.1rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.product-customization {
    color: #ffcc80;
}

.product-intro-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    position: relative;
    z-index: 3;
}

.product-tag {
    background-color: #0a3dad;
    color: var(--white);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}

.product-tag a {
    color: #fff;
    text-decoration: none;
}

.product-tag:hover {
    background-color: #0830a0;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.product-tag:hover a {
    color: #fff;
}

.product-intro-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-large {
    padding: 16px 30px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-width: 180px;
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--white);
    border: none;
}

.btn-secondary:hover {
    background-color: #3a4555;
    color: var(--white);
}

/* Product Visual Section */
.product-video-placeholder {
    width: 100%;
    height: auto;
    background-color: #000;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    overflow: hidden;
}

.product-video-placeholder iframe {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    border: none;
    display: block;
}

/* Product Image Row */
.product-image-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.product-image-item {
    aspect-ratio: 1 / 1;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-image-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

.product-visual-section {
    margin: 40px 0;
    padding: 40px 0;
    border-bottom: 1px solid var(--gray);
}

/* Video Container */
.product-video-container {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background-color: var(--dark);
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-video {
    width: 100%;
    max-height: 600px;
    border-radius: var(--radius);
    display: block;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s ease;
}

.video-overlay:hover {
    background: rgba(0, 0, 0, 0.2);
}

.video-play-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: #0a3dad;
    color: var(--white);
    border: none;
    font-size: 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.video-play-btn:hover {
    background-color: var(--accent);
    transform: scale(1.1);
}

/* Product Highlight Single Column */
.product-highlight-single {
    margin-top: 40px;
}

.product-highlight {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.product-highlight h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-highlight h3 i {
    color: var(--accent);
}

.highlight-list {
    list-style: none;
    padding: 0;
}

.highlight-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--gray);
    position: relative;
    padding-left: 25px;
    color: var(--secondary);
}

.highlight-list li:before {
    content: "�?;
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.highlight-list li:last-child {
    border-bottom: none;
}

.highlight-paragraph {
    color: var(--secondary);
    line-height: 1.7;
}

.highlight-paragraph p {
    margin: 0;
}

/* Product Content Sections */
.product-content-sections {
    display: flex;
    flex-direction: column;
    gap: 50px;
    padding: 40px 0;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #0a3dad;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title i {
    color: var(--accent);
}

/* Product Description */
.description-content {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.description-content p {
    margin-bottom: 20px;
    line-height: 1.7;
    color: var(--secondary);
}

.description-content h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--dark);
    margin: 25px 0 15px;
}

.description-content ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.description-content li {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray);
    color: var(--secondary);
    padding-left: 25px;
    position: relative;
}

.description-content li:before {
    content: "�?;
    position: absolute;
    left: 10px;
    color: #0a3dad;
    font-weight: bold;
    font-size: 1.2rem;
}

.description-content li strong {
    color: var(--dark);
}

.description-content img,
.description-content video,
.description-content iframe {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 16px auto;
    border-radius: 4px;
}

.highlights-content img,
.highlights-content video,
.specifications-content img,
.specifications-content video {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 16px auto;
    border-radius: 4px;
}

/* Product Highlights */
.highlights-content {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.highlights-content p {
    margin-bottom: 20px;
    line-height: 1.7;
    color: var(--secondary);
}

/* Technical Specifications */
.specifications-content {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.specs-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.specs-category {
    margin-bottom: 30px;
}

.specs-category h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--gray);
}

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

.specs-category table tr {
    border-bottom: 1px solid var(--gray);
}

.specs-category table tr:last-child {
    border-bottom: none;
}

.specs-category table td {
    padding: 12px 15px;
    color: var(--secondary);
}

.specs-category table td:first-child {
    font-weight: 500;
    color: var(--dark);
    width: 60%;
}

.specs-category table td:last-child {
    font-weight: 600;
    color: #0a3dad;
}

/* Features & Benefits */
.features-content {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 25px;
    background-color: var(--light);
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-item:hover {
    border-color: #0a3dad;
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: #0a3dad;
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
}

.feature-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 15px;
}

.feature-item p {
    color: var(--secondary);
    line-height: 1.6;
}

/* Applications */
.applications-content {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.application-item {
    text-align: center;
    padding: 25px;
    background-color: var(--light);
    border-radius: var(--radius);
    transition: var(--transition);
}

.application-item:hover {
    background-color: #0a3dad;
    color: var(--white);
    transform: translateY(-5px);
}

.application-item:hover h3,
.application-item:hover p {
    color: var(--white);
}

.application-icon {
    width: 60px;
    height: 60px;
    background-color: var(--white);
    color: #0a3dad;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    transition: var(--transition);
}

.application-item:hover .application-icon {
    background-color: var(--white);
    color: #0a3dad;
}

.application-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 15px;
    transition: var(--transition);
}

.application-item p {
    color: var(--secondary);
    line-height: 1.6;
    transition: var(--transition);
}

/* Technical Documents */
.documents-content {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.documents-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.document-item {
    display: flex;
    align-items: center;
    padding: 20px;
    background-color: var(--light);
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    border: 1px solid transparent;
}

.document-item:hover {
    border-color: #0a3dad;
    background-color: var(--white);
    transform: translateX(5px);
}

.document-icon {
    width: 50px;
    height: 50px;
    background-color: #0a3dad;
    color: var(--white);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    font-size: 1.3rem;
}

.document-info {
    flex: 1;
}

.document-info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 5px;
}

.document-info p {
    color: var(--secondary);
    font-size: 0.95rem;
    margin-bottom: 5px;
}

.document-size {
    font-size: 0.85rem;
    color: var(--metal);
}

.document-action {
    color: #0a3dad;
    font-size: 1.2rem;
    transition: var(--transition);
}

.document-item:hover .document-action {
    color: var(--accent);
    transform: scale(1.2);
}

/* Customization tag */
.product-customization {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: #ff9800;
    font-weight: 500;
}

.product-customization i {
    font-size: 1.1rem;
}

/* Related Products */
.related-products-section {
    padding: 60px 0;
    border-top: 1px solid var(--gray);
    margin-top: 40px;
}

.related-products-section .section-title {
    text-align: center;
    border-bottom: none;
    justify-content: center;
    font-size: 2rem;
}

.related-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.related-product-card {
    background-color: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.related-product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.related-product-image {
    aspect-ratio: 1/1;
    overflow: hidden;
    background-color: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
}

.related-product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.related-product-card:hover .related-product-image img {
    transform: scale(1.05);
}

.related-product-info {
    padding: 25px;
}

.related-product-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--dark);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.related-product-info p {
    color: var(--secondary);
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.related-product-info .view-details-link {
    color: #0a3dad;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s, gap 0.2s;
}

.related-product-info .view-details-link:hover {
    color: #0830a0;
    gap: 10px;
}

/* Product quote button - mobile only */
.product-quote-desktop {
    display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .product-image-row {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .product-quote-desktop {
        display: inline-block;
    }
    
    .product-intro-title {
        font-size: 2rem;
    }
    
    .product-intro-header {
        flex-direction: column;
    }
    
    .product-intro-actions {
        width: 100%;
    }
    
    .btn-large {
        flex: 1;
        min-width: auto;
    }
    
    .product-visual-section {
        padding: 30px 0;
    }
    
    .product-main-image {
        padding: 20px;
        min-height: 300px;
    }
    

    
    .section-title {
        font-size: 1.5rem;
    }
    
    .features-grid,
    .applications-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-table {
        grid-template-columns: 1fr;
    }
    
    .related-products-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .product-intro-title {
        font-size: 1.6rem;
    }
    
    .product-intro-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    .product-intro-actions {
        flex-direction: column;
    }
    
    
    
    .product-tag {
        padding: 4px 12px;
        font-size: 0.8rem;
    }

    .description-content,
    .highlights-content,
    .specifications-content {
        padding: 16px;
    }

    .description-content img,
    .highlights-content img,
    .specifications-content img {
        max-width: 100%;
        height: auto;
    }
}