/* BREADCRUMB */
.breadcrumb {
  display: flex; align-items: center; gap: 10px;
  padding: 88px 8vw 0;
  font-size: 12px; font-weight: 500; letter-spacing: 0.06em;
  color: var(--mid-gray);
  background: var(--white);
}
.breadcrumb a {
  color: var(--mid-gray); text-decoration: none; transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--terracotta); }
.breadcrumb span:not(:last-child) { color: var(--concrete); }
.breadcrumb span:last-child { color: var(--graphite); font-weight: 600; }

/* PRODUCT HERO */
.product-hero {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 0; background: var(--white);
  padding: 40px 0 0;
  min-height: 600px;
}

/* GALLERY */
.product-gallery {
  padding: 0 3vw 48px 8vw;
  display: flex; flex-direction: column; gap: 12px;
  position: sticky; top: 72px; align-self: start;
}
.gallery-main {
  position: relative; width: 100%;
  aspect-ratio: 4/3;
  background: var(--concrete-light);
  overflow: hidden; border-radius: 2px;
}
.gallery-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}
.gallery-placeholder.small {
  width: 100%; height: 100%;
  background: var(--concrete);
}
.gallery-badges {
  position: absolute; top: 16px; left: 16px;
  display: flex; gap: 8px; z-index: 2;
}
.gallery-badge {
  background: var(--terracotta); color: var(--white);
  font-size: 10px; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase;
  padding: 5px 12px; border-radius: 2px;
}
.gallery-thumbs {
  display: flex; gap: 8px;
}
.gallery-thumb {
  flex: 1; aspect-ratio: 4/3;
  background: var(--concrete-light); border-radius: 2px;
  overflow: hidden; cursor: pointer;
  border: 2px solid transparent; transition: border-color 0.2s;
}
.gallery-thumb.active { border-color: var(--terracotta); }
.gallery-thumb:hover { border-color: var(--mid-gray); }

/* PRODUCT INFO */
.product-info {
  padding: 0 8vw 48px 3vw;
  display: flex; flex-direction: column; gap: 0;
}
.product-title {
  font-size: clamp(28px, 2.8vw, 44px);
  font-weight: 800; letter-spacing: -0.02em;
  color: var(--graphite); line-height: 1.1;
  margin: 8px 0 16px;
}
.product-desc {
  font-size: 15px; color: var(--mid-gray); line-height: 1.7;
  margin-bottom: 32px; max-width: 480px;
}

/* KEY SPECS */
.product-key-specs {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--concrete);
  border: 1px solid var(--concrete);
  margin-bottom: 32px;
}
.key-spec {
  background: var(--white); padding: 18px 14px;
  display: flex; flex-direction: column; gap: 4px;
  text-align: center;
}
.key-spec-val {
  font-size: 20px; font-weight: 800; color: var(--graphite);
  letter-spacing: -0.02em; line-height: 1;
}
.key-spec-label {
  font-size: 10px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--mid-gray);
}

/* COLORS */
.product-colors-block { margin-bottom: 32px; }
.product-section-label {
  font-size: 11px; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--terracotta); margin-bottom: 14px;
}
.product-colors-row {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
}
.pcolor {
  width: 32px; height: 32px; border-radius: 50%;
  cursor: pointer; border: 3px solid transparent;
  transition: all 0.2s; outline: 2px solid transparent;
}
.pcolor:hover { transform: scale(1.15); }
.pcolor.active {
  border-color: var(--white);
  outline-color: var(--terracotta);
  transform: scale(1.1);
}
.product-color-name {
  font-size: 13px; font-weight: 600; color: var(--graphite);
  margin-top: 10px; letter-spacing: 0.01em;
}

/* CTA */
.product-cta {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-bottom: 24px;
}
.product-cta .btn { font-size: 12px; padding: 13px 22px; }

/* PDF LINK */
.product-pdf-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--mid-gray); text-decoration: none;
  border-bottom: 1px solid var(--concrete); padding-bottom: 2px;
  width: fit-content; transition: color 0.2s, border-color 0.2s;
}
.product-pdf-link:hover { color: var(--terracotta); border-color: var(--terracotta); }

/* SPECS TABLE */
.specs-section {
  background: var(--concrete-light);
  padding: 80px 8vw;
}
.specs-inner {
  display: grid; grid-template-columns: 1fr 2fr; gap: 64px; align-items: start;
}
.specs-left { position: sticky; top: 100px; }
.specs-table {
  width: 100%; border-collapse: collapse;
}
.specs-table tr { border-bottom: 1px solid var(--concrete); }
.specs-table tr:last-child { border-bottom: none; }
.spec-key {
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--mid-gray); padding: 18px 24px 18px 0;
  white-space: nowrap; vertical-align: top; width: 40%;
}
.spec-val {
  font-size: 15px; font-weight: 500; color: var(--graphite);
  padding: 18px 0; vertical-align: top; line-height: 1.5;
}

/* INSTALL PHOTOS */
.install-section {
  background: var(--white); padding: 80px 8vw;
}
.install-section .section-title { margin-bottom: 40px; }
.install-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 3px; aspect-ratio: 16/6;
}
.install-cell { overflow: hidden; position: relative; }
.install-placeholder {
  width: 100%; height: 100%;
  background: var(--concrete-light);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.4s ease;
}
.install-cell:hover .install-placeholder { transform: scale(1.03); }

/* SCHEME SECTION */
.scheme-section {
  background: var(--concrete-light); padding: 80px 8vw;
}
.scheme-section .section-title { margin-bottom: 40px; }
.scheme-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px;
}
.scheme-card {
  background: var(--white);
  overflow: hidden; cursor: pointer;
  transition: transform 0.2s;
}
.scheme-card:hover { transform: translateY(-4px); }
.scheme-img {
  display: flex; align-items: center; justify-content: center;
  background: var(--concrete-light); overflow: hidden;
}
.scheme-img svg { width: 100%; height: auto; display: block; }
.scheme-name {
  padding: 16px 20px;
  font-size: 13px; font-weight: 700; color: var(--graphite);
  letter-spacing: 0.02em;
}

/* PRODUCT VIDEO */
.product-video-section {
  background: var(--graphite);
  padding: 80px 8vw;
  text-align: center;
}
.product-video-section .section-title { margin-bottom: 40px; }
.product-video-wrap {
  position: relative;
  width: 100%; max-width: 900px; margin: 0 auto;
  aspect-ratio: 16/9; background: #111;
  border-radius: 2px; overflow: hidden;
}
.product-video {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
}
.product-video-section .reel-play-btn {
  display: flex; position: absolute; inset: 0;
  align-items: center; justify-content: center;
  cursor: pointer; background: none; border: none;
  transition: opacity 0.3s;
}
.product-video-section .reel-play-btn.hidden { opacity: 0; pointer-events: none; }
.product-video-section .reel-play-btn svg { width: 72px; height: 72px; }

/* STICKY MOBILE CTA */
.product-sticky-cta {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 90;
  background: rgba(28,28,30,0.97);
  backdrop-filter: blur(12px);
  padding: 12px 16px;
  flex-direction: row; gap: 10px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.product-sticky-cta .btn { font-size: 12px; padding: 13px 16px; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .breadcrumb { padding: 76px 6vw 0; font-size: 11px; gap: 6px; }

  .product-hero {
    grid-template-columns: 1fr;
    padding-top: 24px;
  }
  .product-gallery {
    padding: 0 6vw 32px;
    position: static;
  }
  .product-info {
    padding: 0 6vw 100px;
  }

  .product-key-specs {
    grid-template-columns: repeat(2, 1fr);
  }
  .key-spec-val { font-size: 18px; }

  .product-cta {
    flex-direction: column;
  }
  .product-cta .btn { justify-content: center; }

  .specs-section { padding: 64px 6vw; }
  .specs-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .specs-left { position: static; }

  .install-section { padding: 64px 6vw; }
  .install-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    aspect-ratio: unset;
  }
  .install-cell { aspect-ratio: 4/3; }
  .install-cell:first-child { grid-column: 1 / -1; }

  .scheme-section { padding: 64px 6vw; }
  .scheme-grid { grid-template-columns: 1fr; gap: 2px; }
  .scheme-card { display: flex; align-items: center; }
  .scheme-img { flex: 0 0 140px; height: 110px; }
  .scheme-img svg { width: 140px; height: 110px; }

  .product-video-section { padding: 64px 6vw; }

  .product-sticky-cta { display: flex; }
}

@media (max-width: 480px) {
  .product-key-specs { grid-template-columns: repeat(2, 1fr); }
  .key-spec { padding: 14px 10px; }
  .key-spec-val { font-size: 16px; }

  .gallery-thumbs { gap: 4px; }

  .spec-key { font-size: 11px; }
  .spec-val { font-size: 14px; }
}