/* ==========================================================================
   PRODUCT DETAIL PAGE SPECIFIC STYLES
   Description: Styles for the 10-module high-conversion B2B product layout.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Module 1: Hero Section
   -------------------------------------------------------------------------- */
.product-hero {
    position: relative;
    padding: 6rem 0;
    background-color: var(--color-background);
    overflow: hidden;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.product-hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.product-hero__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center right;
}

.product-hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0.95) 45%, rgba(255, 255, 255, 0.4) 75%, transparent 100%);
    z-index: 1;
}

.product-hero__content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.product-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.product-hero__title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.product-hero__usp-list {
    list-style: none;
    padding: 0;
    margin: 0 0 2.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}

.product-hero__usp-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.product-hero__usp-icon {
    color: var(--color-success);
    flex-shrink: 0;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    padding: 4px;
}

.product-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* --------------------------------------------------------------------------
   Module 2: Trust Banner
   -------------------------------------------------------------------------- */
.pd-trust-banner {
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem 0;
    position: relative;
    z-index: 10;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.pd-trust-banner__grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1.5rem;
}

.pd-trust-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pd-trust-item__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: var(--color-background-alt);
    color: var(--color-primary);
    border-radius: 50%;
}

.pd-trust-item__text {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text-primary);
    display: block;
}

.pd-trust-item__subtext {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* --------------------------------------------------------------------------
   Shared Section Styles
   -------------------------------------------------------------------------- */
.pd-section {
    padding: 5rem 0;
}

.pd-section--light {
    background-color: var(--color-background-alt);
}

.pd-section-header {
    text-align: center;
    margin-bottom: 3.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.pd-section-badge {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    display: block;
    margin-bottom: 0.75rem;
}

.pd-section-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.pd-section-desc {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Module 3: Product Features
   -------------------------------------------------------------------------- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.feature-card__icon {
    width: 64px;
    height: 64px;
    background: var(--color-primary);
    color: white;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem auto;
}

.feature-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.feature-card__desc {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Module 4: Material Structure Visual
   -------------------------------------------------------------------------- */
.material-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.material-visual__img-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.material-visual__img {
    width: 100%;
    display: block;
}

.layer-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.layer-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.layer-item__code {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    min-width: 80px;
}

.layer-item__desc h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.layer-item__desc p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Module 5: Application Scenarios
   -------------------------------------------------------------------------- */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.app-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    display: flex;
    align-items: flex-end;
}

.app-card__img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.app-card:hover .app-card__img {
    transform: scale(1.05);
}

.app-card__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 2rem 1.5rem 1.5rem 1.5rem;
}

.app-card__title {
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

/* --------------------------------------------------------------------------
   Module 6: Customization Options
   -------------------------------------------------------------------------- */
.custom-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.custom-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.custom-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.custom-card h4 svg {
    color: var(--color-accent);
}

.custom-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.custom-list li {
    padding: 0.5rem 0;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.custom-list li svg {
    color: var(--color-success);
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Module 7: Technical Data Sheet (TDS)
   -------------------------------------------------------------------------- */
.tds-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.tds-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tds-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

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

.tds-table th,
.tds-table td {
    padding: 1.25rem 2rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

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

.tds-table tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.015);
}

.tds-table th {
    width: 35%;
    font-weight: 600;
    color: var(--color-text-primary);
    background-color: rgba(0, 0, 0, 0.02);
    border-right: 1px solid var(--color-border);
}

.tds-table td {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.tds-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

/* --------------------------------------------------------------------------
   Module 8: Certifications
   -------------------------------------------------------------------------- */
.cert-row {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 3rem;
    padding: 2rem;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--color-border);
}

.cert-img {
    height: 60px;
    opacity: 0.7;
    transition: opacity 0.3s ease, filter 0.3s ease;
    filter: grayscale(100%);
}

.cert-img:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* --------------------------------------------------------------------------
   Module 9: Inspiration Gallery
   -------------------------------------------------------------------------- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 1;
    display: block;
}

.gallery-item__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover .gallery-item__img {
    transform: scale(1.08);
}

.gallery-item__overlay {
    position: absolute;
    inset: 0;
    background: rgba(14, 25, 50, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-item__overlay {
    opacity: 1;
}

.gallery-item__overlay span {
    color: white;
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.gallery-item__overlay p {
    color: var(--color-accent);
    font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   Module 10: Final CTA
   -------------------------------------------------------------------------- */
.final-cta {
    background-color: var(--color-primary);
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.final-cta__content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.final-cta__title {
    color: white;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.final-cta__desc {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
}

.final-cta__actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Responsive Overrides */
@media (max-width: 1024px) {
    .product-hero__overlay {
        background: linear-gradient(90deg, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0.95) 60%, rgba(255, 255, 255, 0.7) 100%);
    }

    .material-visual {
        grid-template-columns: 1fr;
    }

    .material-visual__img-wrapper {
        max-width: 600px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .product-hero {
        padding: 4rem 0;
    }

    .product-hero__overlay {
        background: rgba(255, 255, 255, 0.9);
    }

    .product-hero__title {
        font-size: 2.25rem;
    }

    .trust-banner__grid {
        justify-content: center;
    }

    .tds-table th,
    .tds-table td {
        padding: 1rem;
        display: block;
        width: 100%;
    }

    .tds-table th {
        border-right: none;
        border-bottom: none;
        padding-bottom: 0.5rem;
    }

    .tds-table td {
        padding-top: 0;
        margin-bottom: 1rem;
    }

    .pd-section {
        padding: 3rem 0;
    }

    .pd-section-title {
        font-size: 1.75rem;
    }
}
/* ==========================================================================
   Module 11: V2 Gallery & Card Enhancements (nd-p-*)
   ========================================================================== */

/* Gallery main image proportion locking & containment */
.nd-p-gallery-main img {
    height: 100% !important;
    object-fit: contain !important;
}

/* High contrast text shadow for light or overlay backgrounds */
.nd-text-shadow {
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8), 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* --- Breadcrumb (Hero Section) --- */
.nd-p-breadcrumb {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nd-p-breadcrumb a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
    text-decoration: none;
}

.nd-p-breadcrumb a:hover {
    color: white;
}

.nd-p-breadcrumb .nd-p-sep {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.75rem;
    margin-top: 1px;
}

.nd-p-breadcrumb .nd-p-current {
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
}