/* ============================================
   Part 4: Product Detail Page, Lightbox,
   Version Badge, Breadcrumb
   ============================================ */

/* Breadcrumb */
.breadcrumb-section { padding: 100px 0 0; position: relative; z-index: 1; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--text-muted); flex-wrap: wrap; }
.breadcrumb-link { color: var(--text-secondary); transition: color 0.3s ease; }
.breadcrumb-link:hover { color: var(--primary-light); }
.breadcrumb-link i { margin-right: 4px; }
.breadcrumb-sep { font-size: 0.6rem; color: var(--text-muted); }
.breadcrumb-current { color: var(--primary-light); font-weight: 500; }

/* Product Detail */
.product-detail-section { position: relative; z-index: 1; padding: 40px 0 var(--section-padding); }
.product-detail-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }

/* Gallery */
.product-gallery { position: sticky; top: 100px; }
.gallery-main { position: relative; border-radius: var(--radius-lg); border: 1px solid var(--border); background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary)); overflow: hidden; aspect-ratio: 16/10; }
.gallery-main-img { width: 100%; height: 100%; object-fit: cover; cursor: zoom-in; transition: transform 0.3s ease; }
.gallery-main-img:hover { transform: scale(1.02); }

.gallery-placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; min-height: 300px; gap: 16px; color: var(--primary); }
.gallery-placeholder i { font-size: 5rem; opacity: 0.3; }
.gallery-placeholder span { font-size: 0.88rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 2px; }

.gallery-thumbs { display: flex; gap: 10px; margin-top: 12px; overflow-x: auto; padding-bottom: 4px; }
.gallery-thumb { width: 80px; height: 55px; border-radius: var(--radius-sm); border: 2px solid var(--border); overflow: hidden; cursor: pointer; transition: all 0.3s ease; flex-shrink: 0; }
.gallery-thumb.active { border-color: var(--primary); box-shadow: 0 0 10px var(--primary-glow); }
.gallery-thumb:hover { border-color: var(--primary-light); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* Product Detail Info */
.product-detail-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.product-detail-category { font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--primary-light); text-transform: uppercase; letter-spacing: 2px; padding: 6px 14px; border-radius: 100px; background: hsla(270, 85%, 55%, 0.12); border: 1px solid hsla(270, 85%, 55%, 0.2); }
.product-detail-version { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--cyber); padding: 6px 12px; border-radius: 100px; background: hsla(180, 95%, 50%, 0.1); border: 1px solid hsla(180, 95%, 50%, 0.2); }

.product-detail-title { font-family: 'Orbitron', monospace; font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 16px; letter-spacing: 0.5px; line-height: 1.3; }
.product-detail-desc { font-size: 1rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 28px; }

/* Version badge for cards */
.product-meta-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.product-version { font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; color: var(--cyber); padding: 3px 8px; border-radius: 100px; background: hsla(180, 95%, 50%, 0.08); border: 1px solid hsla(180, 95%, 50%, 0.15); }

/* Price Card */
.price-card { padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--bg-card); backdrop-filter: blur(10px); margin-bottom: 28px; }
.price-card-main { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.price-card-label { font-size: 0.82rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.price-card-value { font-family: 'Orbitron', monospace; font-size: 2rem; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.price-card-actions { display: flex; gap: 12px; }
.price-card-actions .btn { flex: 1; justify-content: center; }

/* Detail Section Titles */
.detail-section-title { font-family: 'Orbitron', monospace; font-size: 1rem; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; letter-spacing: 0.5px; }
.detail-section-title i { color: var(--primary-light); font-size: 0.9rem; }
.detail-section-title.center { justify-content: center; font-size: 1.2rem; margin-bottom: 32px; margin-top: 80px; }

/* Features List */
.product-detail-features { margin-bottom: 28px; }
.features-list { list-style: none; display: grid; gap: 10px; }
.features-list li { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--bg-glass); transition: all 0.3s ease; font-size: 0.92rem; color: var(--text-secondary); }
.features-list li:hover { border-color: var(--border-hover); transform: translateX(4px); }
.features-list li i { color: #28ca41; font-size: 0.8rem; flex-shrink: 0; }

/* Tech Tags */
.product-detail-tech { margin-bottom: 28px; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-tag { padding: 8px 16px; border-radius: 100px; font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; font-weight: 500; color: var(--text-secondary); border: 1px solid var(--border); background: var(--bg-glass); transition: all 0.3s ease; }
.tech-tag:hover { border-color: var(--primary); color: var(--primary-light); background: hsla(270, 85%, 55%, 0.1); }

/* Info Grid */
.product-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.info-grid-item { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--bg-glass); }
.info-grid-item i { font-size: 1.1rem; color: var(--primary-light); width: 20px; text-align: center; }
.info-grid-label { display: block; font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.info-grid-value { font-size: 0.88rem; font-weight: 600; }

/* Video */
.product-video { margin-top: 80px; }
.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

/* Related Products */
.related-products { margin-top: 0; }
.related-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 10000; background: hsla(0, 0%, 0%, 0.92); backdrop-filter: blur(20px); display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
.lightbox.active { opacity: 1; visibility: visible; }
.lightbox-close { position: absolute; top: 24px; right: 24px; width: 48px; height: 48px; border-radius: 50%; border: 1px solid hsla(255,255,255,0.2); color: white; font-size: 1.2rem; display: flex; align-items: center; justify-content: center; transition: all 0.3s ease; z-index: 10; cursor: pointer; background: none; }
.lightbox-close:hover { background: hsla(255,255,255,0.1); border-color: hsla(255,255,255,0.4); }
.lightbox-content { max-width: 90vw; max-height: 85vh; }
.lightbox-content img { max-width: 100%; max-height: 80vh; border-radius: var(--radius-md); object-fit: contain; }
.lightbox-counter { text-align: center; margin-top: 12px; font-size: 0.85rem; color: hsla(255,255,255,0.6); font-family: 'JetBrains Mono', monospace; }
.lightbox-prev, .lightbox-next { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; border-radius: 50%; border: 1px solid hsla(255,255,255,0.15); color: white; font-size: 1rem; display: flex; align-items: center; justify-content: center; transition: all 0.3s ease; cursor: pointer; background: none; }
.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }
.lightbox-prev:hover, .lightbox-next:hover { background: hsla(255,255,255,0.1); border-color: hsla(255,255,255,0.3); }

/* Responsive Detail */
@media (max-width: 1024px) {
    .product-detail-wrapper { grid-template-columns: 1fr; }
    .product-gallery { position: static; }
}

@media (max-width: 768px) {
    .product-info-grid { grid-template-columns: 1fr; }
    .price-card-actions { flex-direction: column; }
    .price-card-value { font-size: 1.5rem; }
    .related-grid { grid-template-columns: 1fr; }
    .product-detail-title { font-size: 1.3rem; }
    .product-detail-desc { font-size: 0.9rem; }
    .price-card { padding: 20px; }
    .gallery-thumbs { gap: 8px; }
    .gallery-thumb { width: 60px; height: 42px; }
    .breadcrumb { font-size: 0.78rem; }
}

@media (max-width: 480px) {
    .product-detail-title { font-size: 1.1rem; letter-spacing: 0; }
    .product-detail-desc { font-size: 0.85rem; line-height: 1.7; }
    .price-card { padding: 16px; }
    .price-card-value { font-size: 1.2rem; }
    .price-card-label { font-size: 0.72rem; }
    .features-list li { padding: 10px 12px; font-size: 0.85rem; }
    .tech-tag { padding: 6px 12px; font-size: 0.72rem; }
    .detail-section-title { font-size: 0.88rem; }
    .gallery-thumb { width: 50px; height: 35px; }
    .product-detail-category { font-size: 0.7rem; padding: 4px 10px; }
    .product-detail-version { font-size: 0.68rem; padding: 4px 10px; }
    .breadcrumb { font-size: 0.72rem; gap: 6px; }
    .lightbox-prev, .lightbox-next { width: 36px; height: 36px; font-size: 0.85rem; }
    .lightbox-close { width: 36px; height: 36px; font-size: 1rem; }
}