/* =========================================
   PRODUCT PAGE
   SINTERIOR SOLUTIONS
========================================= */

:root {

    --product-bg: #080808;
    --product-bg-soft: #0d0d0d;
    --product-card: #111111;

    --product-text: #f3f1ed;
    --product-muted: #888;
    --product-dark-muted: #555;

    --product-gold: #c9a86a;
    --product-gold-soft:
        rgba(201,168,106,.25);

    --product-border:
        rgba(255,255,255,.08);

}


/* =========================================
   PRODUCT PAGE
========================================= */

.product-page {

    position: relative;

    background:
        radial-gradient(
            circle at 80% 8%,
            rgba(201,168,106,.045),
            transparent 28%
        ),
        var(--product-bg);

    color: var(--product-text);

    overflow: hidden;

}


/* =========================================
   COMMON CONTAINER
========================================= */

.product-hero-container,
.product-section-container {

    width: min(1400px, 90%);

    margin: 0 auto;

}


/* =========================================
   PRODUCT HERO
========================================= */

.product-hero {

    position: relative;

    min-height: 100vh;

    padding:
        180px 0
        120px;

    display: flex;

    align-items: center;

}


.product-hero-container {

    display: grid;

    grid-template-columns:
        minmax(0, 1.15fr)
        minmax(360px, .85fr);

    gap: 100px;

    align-items: center;

}


/* =========================================
   MAIN PRODUCT IMAGE
========================================= */

.product-main-image {

    position: relative;

    padding-right: 25px;

}


.product-image-frame {

    position: relative;

    width: 100%;

    aspect-ratio: 4 / 3;

    border-radius: 24px;

}


/* GOLD FRAME */

.product-image-frame::before {

    content: "";

    position: absolute;

    top: -22px;

    right: -22px;

    width: 100%;

    height: 100%;

    border:
        1px solid
        rgba(201,168,106,.42);

    border-radius: 24px;

    z-index: 0;

    transition:
        border-color .6s ease;

}


/* IMAGE */

.product-image-frame img {

    position: relative;

    z-index: 1;

    display: block;

    width: 100%;

    height: 100%;

    object-fit: contain;

    object-position: center;

    border-radius: 24px;

    background: #f2eee7;

    transition:
        transform
        1s
        cubic-bezier(.2,.65,.2,1);

}


.product-image-frame:hover img {

    transform:
        scale(1.018);

}


.product-image-frame:hover::before {

    border-color:
        rgba(201,168,106,.7);

}


.product-image-number {

    position: absolute;

    left: 5px;

    bottom: -45px;

    color: #555;

    font-size: .58rem;

    letter-spacing: 3px;

}


/* =========================================
   PRODUCT INFO
========================================= */

.product-info {

    max-width: 540px;

}


.product-eyebrow {

    display: flex;

    align-items: center;

    gap: 14px;

    margin-bottom: 30px;

    color: var(--product-gold);

    font-size: .62rem;

    font-weight: 600;

    letter-spacing: 4px;

}


.product-eyebrow::before {

    content: "";

    width: 42px;

    height: 1px;

    background:
        var(--product-gold);

}


.product-info h1 {

    margin: 0;

    font-size:
        clamp(5rem, 8vw, 8rem);

    line-height: .8;

    font-weight: 400;

    letter-spacing: -6px;

}


.product-finish {

    display: block;

    margin-top: 28px;

    color: var(--product-gold);

    font-size: .72rem;

    font-weight: 500;

    letter-spacing: 3px;

    text-transform: uppercase;

}


.product-intro {

    max-width: 500px;

    margin: 40px 0 0;

    color: #999;

    font-size: .92rem;

    line-height: 1.9;

}


/* =========================================
   QUICK SPECS
========================================= */

.product-quick-specs {

    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    margin-top: 50px;

    border-top:
        1px solid
        var(--product-border);

    border-bottom:
        1px solid
        var(--product-border);

}


.quick-spec {

    padding:
        22px 15px 22px 0;

    border-right:
        1px solid
        var(--product-border);

}


.quick-spec:nth-child(2) {

    padding-left: 15px;

}


.quick-spec:last-child {

    padding-left: 15px;

    border-right: 0;

}


.quick-spec span {

    display: block;

    margin-bottom: 9px;

    color: #555;

    font-size: .55rem;

    font-weight: 600;

    letter-spacing: 2px;

}


.quick-spec strong {

    color: #ddd;

    font-size: .72rem;

    font-weight: 400;

}


/* =========================================
   MAIN CTA
========================================= */

.product-main-btn {

    display: flex;

    align-items: center;

    justify-content: space-between;

    width: 100%;

    max-width: 470px;

    margin-top: 40px;

    padding: 15px 0;

    color: #eee;

    text-decoration: none;

    border-bottom:
        1px solid
        rgba(201,168,106,.4);

    font-size: .64rem;

    font-weight: 600;

    letter-spacing: 2.5px;

    transition:
        color .35s ease,
        border-color .35s ease;

}


.product-main-btn-icon {

    width: 46px;

    height: 46px;

    display: flex;

    align-items: center;

    justify-content: center;

    border:
        1px solid
        rgba(201,168,106,.45);

    border-radius: 50%;

    color: var(--product-gold);

    font-size: 1.1rem;

    transition:
        .4s ease;

}


.product-main-btn:hover {

    color:
        var(--product-gold);

    border-color:
        var(--product-gold);

}


.product-main-btn:hover
.product-main-btn-icon {

    background:
        var(--product-gold);

    color: #111;

    transform:
        translateX(7px);

}


.product-note {

    display: block;

    margin-top: 18px;

    color: #4d4d4d;

    font-size: .58rem;

}


/* =========================================
   MATERIAL INTRO
========================================= */

.product-intro-section {

    position: relative;

    padding:
        160px 0;

    background:
        var(--product-bg-soft);

    border-top:
        1px solid
        var(--product-border);

    border-bottom:
        1px solid
        var(--product-border);

}


.product-section-label {

    margin-bottom: 70px;

}


.product-section-label span {

    color:
        var(--product-gold);

    font-size: .6rem;

    font-weight: 600;

    letter-spacing: 3px;

}


.product-intro-grid {

    display: grid;

    grid-template-columns:
        1.1fr .9fr;

    gap: 120px;

    align-items: start;

}


.product-intro-grid h2 {

    margin: 0;

    font-size:
        clamp(3rem, 5.5vw, 6rem);

    line-height: .95;

    font-weight: 400;

    letter-spacing: -4px;

}


.product-intro-copy {

    padding-top: 10px;

}


.product-intro-copy p {

    max-width: 510px;

    margin: 0 0 28px;

    color: #888;

    font-size: .9rem;

    line-height: 1.9;

}


.product-intro-copy p:last-child {

    margin-bottom: 0;

}


/* =========================================
   GALLERY
========================================= */

.product-gallery-section {

    padding:
        160px 0;

}


.product-gallery-heading {

    display: flex;

    align-items: end;

    justify-content: space-between;

    gap: 60px;

    margin-bottom: 65px;

}


.product-gallery-heading span {

    display: block;

    margin-bottom: 18px;

    color: var(--product-gold);

    font-size: .58rem;

    font-weight: 600;

    letter-spacing: 3px;

}


.product-gallery-heading h2 {

    margin: 0;

    font-size:
        clamp(2.5rem, 4vw, 4.5rem);

    line-height: 1;

    font-weight: 400;

    letter-spacing: -3px;

}


.product-gallery-heading p {

    max-width: 330px;

    margin: 0;

    color: #666;

    font-size: .78rem;

    line-height: 1.8;

}


.product-gallery {

    display: grid;

    grid-template-columns:
        1.5fr 1fr;

    grid-template-rows:
        350px 350px;

    gap: 18px;

}


.product-gallery-item {

    position: relative;

    overflow: hidden;

    border-radius: 20px;

    background: #111;

}


.product-gallery-item img {

    display: block;

    width: 100%;

    height: 100%;

    object-fit: cover;

    transition:
        transform
        .8s
        cubic-bezier(.2,.65,.2,1);

}


.product-gallery-item:hover img {

    transform:
        scale(1.035);

}


.gallery-large {

    grid-row:
        1 / 3;

}


/* =========================================
   TECHNICAL DATA
========================================= */

.product-technical-section {

    padding:
        160px 0;

    background:
        #0b0b0b;

    border-top:
        1px solid
        var(--product-border);

}


.technical-header {

    margin-bottom: 70px;

}


.technical-header span {

    display: block;

    margin-bottom: 20px;

    color:
        var(--product-gold);

    font-size: .58rem;

    font-weight: 600;

    letter-spacing: 3px;

}


.technical-header h2 {

    margin: 0;

    font-size:
        clamp(2.5rem, 4vw, 4.5rem);

    font-weight: 400;

    letter-spacing: -3px;

}


.technical-grid {

    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    border-top:
        1px solid
        var(--product-border);

    border-left:
        1px solid
        var(--product-border);

}


.technical-card {

    min-height: 170px;

    padding: 30px;

    display: flex;

    flex-direction: column;

    justify-content: space-between;

    border-right:
        1px solid
        var(--product-border);

    border-bottom:
        1px solid
        var(--product-border);

    transition:
        background .35s ease;

}


.technical-card:hover {

    background:
        rgba(201,168,106,.025);

}


.technical-card span {

    color: #555;

    font-size: .55rem;

    font-weight: 600;

    letter-spacing: 2px;

}


.technical-card strong {

    color: #ddd;

    font-size: .9rem;

    font-weight: 400;

}


/* =========================================
   APPLICATIONS
========================================= */

.product-applications {

    padding:
        160px 0;

}


.applications-header {

    margin-bottom: 75px;

}


.applications-header span {

    display: block;

    margin-bottom: 20px;

    color:
        var(--product-gold);

    font-size: .58rem;

    font-weight: 600;

    letter-spacing: 3px;

}


.applications-header h2 {

    margin: 0;

    font-size:
        clamp(2.7rem, 5vw, 5.5rem);

    line-height: .95;

    font-weight: 400;

    letter-spacing: -4px;

}


.applications-list {

    border-top:
        1px solid
        var(--product-border);

}


.application-row {

    display: grid;

    grid-template-columns:
        80px
        1fr
        1fr;

    align-items: center;

    gap: 40px;

    min-height: 145px;

    border-bottom:
        1px solid
        var(--product-border);

    transition:
        padding .4s ease,
        background .4s ease;

}


.application-row:hover {

    padding-left: 18px;

    background:
        rgba(201,168,106,.018);

}


.application-row > span {

    color:
        var(--product-gold);

    font-size: .6rem;

    letter-spacing: 2px;

}


.application-row h3 {

    margin: 0;

    font-size: 1.15rem;

    font-weight: 400;

}


.application-row p {

    max-width: 380px;

    margin: 0;

    color: #666;

    font-size: .75rem;

    line-height: 1.7;

}


/* =========================================
   FINAL CTA
========================================= */

.product-final-cta {

    position: relative;

    padding:
        180px 20px;

    text-align: center;

    overflow: hidden;

    background:

        radial-gradient(
            circle at center,
            rgba(201,168,106,.08),
            transparent 38%
        ),

        #080808;

    border-top:
        1px solid
        var(--product-border);

}


.product-final-inner {

    position: relative;

    z-index: 1;

    max-width: 850px;

    margin: 0 auto;

}


.product-final-inner > span {

    display: block;

    margin-bottom: 30px;

    color:
        var(--product-gold);

    font-size: .6rem;

    font-weight: 600;

    letter-spacing: 4px;

}


.product-final-inner h2 {

    margin: 0;

    font-size:
        clamp(3rem, 6vw, 6.5rem);

    line-height: .92;

    font-weight: 400;

    letter-spacing: -5px;

}


.product-final-inner p {

    max-width: 450px;

    margin: 35px auto 0;

    color: #777;

    font-size: .85rem;

    line-height: 1.8;

}


.product-final-btn {

    display: inline-flex;

    align-items: center;

    justify-content: center;

    gap: 35px;

    margin-top: 45px;

    padding: 17px 0;

    min-width: 280px;

    color: #eee;

    text-decoration: none;

    border-bottom:
        1px solid
        rgba(201,168,106,.45);

    font-size: .63rem;

    font-weight: 600;

    letter-spacing: 2.5px;

    transition:
        color .35s ease,
        border-color .35s ease;

}


.product-final-btn span:last-child {

    display: flex;

    align-items: center;

    justify-content: center;

    width: 44px;

    height: 44px;

    border:
        1px solid
        rgba(201,168,106,.45);

    border-radius: 50%;

    color:
        var(--product-gold);

    transition:
        .4s ease;

}


.product-final-btn:hover {

    color:
        var(--product-gold);

    border-color:
        var(--product-gold);

}


.product-final-btn:hover span:last-child {

    background:
        var(--product-gold);

    color: #111;

    transform:
        translateX(7px);

}

/* =========================================================
   INSTALLATION VIDEO
   ========================================================= */

.installation-video-section {
    width: 100%;
    padding: 120px 6vw;
    background: #080808;
    overflow: hidden;
}

.installation-video-content {
    max-width: 1280px;
    margin: 0 auto;

    display: grid;
    grid-template-columns: minmax(280px, 0.8fr) minmax(320px, 1fr);
    align-items: center;
    gap: 90px;
}

/* TEXT */

.installation-video-text {
    max-width: 480px;
}

.installation-video-text .section-eyebrow {
    display: block;

    margin-bottom: 24px;

    font-size: 11px;
    font-weight: 500;
    letter-spacing: 4px;
    text-transform: uppercase;

    color: #b89a5a;
}

.installation-video-text h2 {
    margin: 0 0 28px;

    font-size: clamp(42px, 5vw, 72px);
    line-height: 0.98;
    font-weight: 400;
    letter-spacing: -2px;

    color: #f1eee8;
}

.installation-video-text p {
    max-width: 420px;

    margin: 0;

    font-size: 16px;
    line-height: 1.8;
    font-weight: 300;

    color: rgba(241, 238, 232, 0.62);
}

.installation-line {
    width: 55px;
    height: 1px;

    margin: 35px 0 22px;

    background: #b89a5a;
}

.installation-caption {
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;

    color: rgba(241, 238, 232, 0.38);
}

/* =========================================================
   INSTALLATION VIDEO — FIXED 9:16
   ========================================================= */

.installation-video-wrapper {
    position: relative;

    width: 100%;
    max-width: 360px;

    aspect-ratio: 9 / 16;

    margin-left: auto;

    padding: 10px;

    border: 1px solid rgba(184, 154, 90, 0.45);
    border-radius: 24px;

    background: rgba(255, 255, 255, 0.025);

    box-sizing: border-box;
    overflow: hidden;
}

.installation-video {
    display: block;

    width: 100%;
    height: 100%;

    object-fit: contain;

    border-radius: 16px;

    background: #111;

    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.45);
}


/* GOLDEN CORNER ACCENT */

.installation-video-wrapper::before {
    content: "";

    position: absolute;

    top: -1px;
    right: 42px;

    width: 90px;
    height: 1px;

    background: #c3a15c;
}

.installation-video-wrapper::after {
    content: "";

    position: absolute;

    bottom: -1px;
    left: 42px;

    width: 90px;
    height: 1px;

    background: #c3a15c;
}


/* =========================================================
   TABLET
   ========================================================= */

@media (max-width: 900px) {

    .installation-video-section {
        padding: 90px 5vw;
    }

    .installation-video-content {
        grid-template-columns: 1fr;

        gap: 55px;
    }

    .installation-video-text {
        max-width: 650px;
    }

    .installation-video-wrapper {
        width: min(100%, 500px);

        margin: 0 auto;
    }

}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 600px) {

    .installation-video-section {
        padding: 75px 20px;
    }

    .installation-video-content {
        gap: 40px;
    }

    .installation-video-text h2 {
        font-size: 43px;
        letter-spacing: -1.5px;
    }

    .installation-video-text p {
        font-size: 14px;
        line-height: 1.7;
    }

    .installation-video-wrapper {
        padding: 8px;

        border-radius: 18px;
    }

    .installation-video {
        border-radius: 12px;
    }

}


/* =========================================
   TABLET
========================================= */

@media (max-width: 1000px) {

    .product-hero {

        padding:
            150px 0
            100px;

    }

    .product-hero-container {

        grid-template-columns:
            1fr;

        gap: 90px;

    }

    .product-info {

        max-width: 700px;

    }

    .product-info h1 {

        font-size:
            clamp(4.5rem, 12vw, 7rem);

    }

    .product-intro-grid {

        grid-template-columns:
            1fr;

        gap: 55px;

    }

    .product-gallery {

        grid-template-columns:
            1fr 1fr;

        grid-template-rows:
            350px 350px;

    }

    .gallery-large {

        grid-column:
            1 / 3;

        grid-row:
            auto;

    }

    .technical-grid {

        grid-template-columns:
            repeat(2, 1fr);

    }

}


/* =========================================
   MOBILE
========================================= */

@media (max-width: 650px) {

    .product-hero {

        min-height: auto;

        padding:
            125px 0
            90px;

    }

    .product-hero-container,
    .product-section-container {

        width: 88%;

    }

    .product-main-image {

        padding-right: 12px;

    }

    .product-image-frame {

        border-radius: 18px;

    }

    .product-image-frame::before {

        top: -12px;

        right: -12px;

        border-radius: 18px;

    }

    .product-image-frame img {

        border-radius: 18px;

    }

    .product-image-number {

        bottom: -30px;

        font-size: .52rem;

    }

    .product-eyebrow {

        margin-bottom: 25px;

        font-size: .55rem;

        letter-spacing: 3px;

    }

    .product-eyebrow::before {

        width: 28px;

    }

    .product-info h1 {

        font-size: 4.5rem;

        letter-spacing: -3px;

    }

    .product-finish {

        margin-top: 22px;

        font-size: .62rem;

        letter-spacing: 2px;

    }

    .product-intro {

        margin-top: 30px;

        font-size: .82rem;

        line-height: 1.8;

    }

    .product-quick-specs {

        grid-template-columns:
            1fr;

        margin-top: 35px;

    }

    .quick-spec,
    .quick-spec:nth-child(2),
    .quick-spec:last-child {

        padding:
            17px 0;

        border-right: 0;

        border-bottom:
            1px solid
            var(--product-border);

    }

    .quick-spec:last-child {

        border-bottom: 0;

    }

    .product-main-btn {

        margin-top: 30px;

        font-size: .57rem;

        letter-spacing: 2px;

    }

    .product-intro-section,
    .product-gallery-section,
    .product-technical-section,
    .product-applications {

        padding:
            100px 0;

    }

    .product-section-label {

        margin-bottom: 45px;

    }

    .product-intro-grid h2 {

        font-size: 3rem;

        letter-spacing: -2px;

    }

    .product-intro-copy p {

        font-size: .82rem;

    }

    .product-gallery-heading {

        display: block;

        margin-bottom: 45px;

    }

    .product-gallery-heading h2 {

        font-size: 2.8rem;

        letter-spacing: -2px;

    }

    .product-gallery-heading p {

        margin-top: 25px;

        font-size: .72rem;

    }

    .product-gallery {

        display: grid;

        grid-template-columns: 1fr;

        grid-template-rows:
            300px
            230px
            230px;

        gap: 12px;

    }

    .gallery-large {

        grid-column: auto;

        grid-row: auto;

    }

    .product-gallery-item {

        border-radius: 16px;

    }

    .technical-header {

        margin-bottom: 45px;

    }

    .technical-header h2 {

        font-size: 2.8rem;

        letter-spacing: -2px;

    }

    .technical-grid {

        grid-template-columns:
            1fr;

    }

    .technical-card {

        min-height: 135px;

        padding: 25px;

    }

    .applications-header {

        margin-bottom: 45px;

    }

    .applications-header h2 {

        font-size: 3rem;

        letter-spacing: -2px;

    }

    .application-row {

        grid-template-columns:
            35px 1fr;

        gap: 15px;

        padding:
            25px 0;

        min-height: auto;

    }

    .application-row:hover {

        padding-left: 0;

    }

    .application-row h3 {

        font-size: .95rem;

    }

    .application-row p {

        grid-column:
            2;

        font-size: .7rem;

    }

    .product-final-cta {

        padding:
            120px 25px;

    }

    .product-final-inner h2 {

        font-size: 3.2rem;

        letter-spacing: -2px;

    }

    .product-final-inner p {

        font-size: .78rem;

    }

    .product-final-btn {

        min-width: 240px;

        gap: 20px;

        font-size: .56rem;

    }

}


/* =========================================
   REDUCED MOTION
========================================= */

@media (prefers-reduced-motion: reduce) {

    .product-image-frame img,
    .product-main-btn,
    .product-main-btn-icon,
    .product-gallery-item img,
    .application-row,
    .product-final-btn,
    .product-final-btn span:last-child {

        transition: none;

    }

}