/* ==========================================================================
   Single Industrial Product Datasheet Layout
   ========================================================================== */
.single-product-main {
  padding-block: var(--epna-space-2xl);
}

.product-datasheet-article {
  position: relative;
}

.product-datasheet-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--epna-space-2xl);
  margin-block-end: var(--epna-space-3xl);
}

/* Left / Gallery Column */
.product-gallery-column {
  display: flex;
  flex-direction: column;
}

.product-main-visual {
  height: 380px;
  background-color: var(--epna-white);
  border: 1px solid #e2e8f0;
  border-radius: var(--epna-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--epna-space-xl);
  overflow: hidden;
  margin-block-end: var(--epna-space-md);
}

.product-primary-img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
}

.product-thumbnails-strip {
  display: flex;
  gap: var(--epna-space-sm);
  margin-block-end: var(--epna-space-lg);
  flex-wrap: wrap;
}

.thumb-strip-item {
  width: 80px;
  height: 80px;
  border-radius: var(--epna-radius-sm);
  border: 2px solid #e2e8f0;
  background-color: var(--epna-white);
  padding: var(--epna-space-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  line-height: 1;
  transition: border-color var(--epna-transition-fast), box-shadow var(--epna-transition-fast);
}

.thumb-strip-item:hover {
  border-color: var(--epna-cyan);
}

.thumb-strip-item:focus-visible {
  outline: 2px solid var(--epna-cyan);
  outline-offset: 2px;
}

.thumb-strip-item.is-active {
  border-color: var(--epna-cyan);
  box-shadow: 0 0 0 2px var(--epna-cyan-glow, rgba(28, 249, 249, 0.4));
}

.thumb-strip-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.product-actions-box {
  display: flex;
  flex-direction: column;
  gap: var(--epna-space-sm);
}

/* Right / Details Column */
.product-details-column {
  display: flex;
  flex-direction: column;
}

.product-headline {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--epna-dark);
  margin-block-end: var(--epna-space-md);
}

.product-lead-excerpt {
  color: var(--epna-slate-light);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-block-end: var(--epna-space-lg);
}

.product-full-description {
  margin-block-end: var(--epna-space-lg);
}

.product-features-box {
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--epna-radius-md);
  padding: var(--epna-space-lg);
  margin-block-end: var(--epna-space-xl);
}

.features-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--epna-dark);
  margin-block-end: var(--epna-space-sm);
}

.features-list {
  margin: 0;
  padding-inline-start: var(--epna-space-lg);
  color: #475569;
  line-height: 1.8;
}

/* Product Aparat Video Showcase */
.product-video-section {
  margin-block-start: var(--epna-space-2xl);
  margin-block-end: var(--epna-space-lg);
}

.product-video-card {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border: 1px solid rgba(28, 249, 249, 0.25);
  border-radius: var(--epna-radius-xl);
  padding: var(--epna-space-xl);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  position: relative;
  overflow: hidden;
}

.product-video-header {
  margin-block-end: var(--epna-space-lg);
  text-align: center;
}

.product-video-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.95rem;
  background: rgba(28, 249, 249, 0.1);
  border: 1px solid var(--epna-cyan);
  border-radius: var(--epna-radius-full);
  color: var(--epna-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  margin-block-end: 0.75rem;
}

.product-video-title {
  color: var(--epna-white);
  font-size: 1.35rem;
  font-weight: 700;
  margin-block-end: 0.5rem;
}

.product-video-subtitle {
  color: var(--epna-gray-muted);
  font-size: 0.95rem;
  max-width: 640px;
  margin-inline: auto;
  margin-block-end: 0;
}

.product-video-embed-container {
  max-width: 860px;
  margin-inline: auto;
  border-radius: var(--epna-radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: #000;
}

.video-responsive-aspect {
  position: relative;
  width: 100%;
  padding-block-start: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
}

.video-responsive-aspect iframe {
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Direct Engineering Inquiry Box */
.product-inquiry-box {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: var(--epna-radius-xl);
  padding: var(--epna-space-2xl);
  color: var(--epna-white);
  margin-block-start: var(--epna-space-2xl);
}

.inquiry-card h3 {
  color: var(--epna-white);
  font-size: 1.35rem;
  font-weight: 700;
  margin-block-end: var(--epna-space-sm);
}

.inquiry-card p {
  color: var(--epna-gray-muted);
  max-width: 680px;
  margin-inline: auto;
  margin-block-end: var(--epna-space-lg);
}

.inquiry-buttons {
  display: flex;
  justify-content: center;
  gap: var(--epna-space-md);
  flex-wrap: wrap;
}

/* Responsive Product Layout */
@media (max-width: 1024px) {
  .product-datasheet-grid {
    grid-template-columns: 1fr;
  }
}