/* ============================================================
   PRODUCT DETAIL PAGE — QAS MODERN STYLES
   ============================================================ */

/* ── PRODUCT HERO HEADER ── */
.product-hero {
  background: linear-gradient(135deg, var(--navy-deeper) 0%, var(--navy-dark) 100%);
  color: white;
  padding: 70px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.product-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}
.product-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--navy-light), var(--red));
}
.product-hero .product-breadcrumb {
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  margin-bottom: 2rem;
}
.product-hero .product-breadcrumb a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color 0.2s;
}
.product-hero .product-breadcrumb a:hover {
  color: white;
}
.product-hero .product-breadcrumb .sep {
  margin: 0 0.5rem;
  color: rgba(255,255,255,0.3);
}
.product-hero h1 {
   font-family: 'Inter', sans-serif;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin: 0;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.product-hero .category-tag {
  display: inline-block;
  background: rgba(220,23,31,0.2);
  color: var(--red);
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-top: 1rem;
}

/* ── PRODUCT DETAIL SECTION ── */
.product-detail-section {
  background: var(--off-white);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.product-detail-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 60px;
  background: var(--off-white);
  clip-path: ellipse(55% 100% at 50% 0%);
}

/* ── IMAGE SLIDER ── */
.product-gallery .swiper-wrapper {
  margin-bottom: 0;
}
.product-gallery-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
  transition: transform 0.3s;
}
.product-gallery-card:hover {
  transform: translateY(-4px);
}
.product-gallery-card .img {
  position: relative;
  overflow: hidden;
  height: 420px;
  background: #f0f2f8;
}
.product-gallery-card .img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}
.product-gallery-card:hover .img img {
  transform: scale(1.05);
}
/* Gradient border on hover (same as category cards) */
.product-gallery-card .img::before {
  content: '';
  position: absolute;
  inset: 0;
  padding: 3px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--navy-light), var(--red), var(--navy-light));
  -webkit-mask: 
    linear-gradient(#fff 0 0) content-box, 
    linear-gradient(#fff 0 0);
  mask: 
    linear-gradient(#fff 0 0) content-box, 
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.product-gallery-card:hover .img::before {
  opacity: 1;
}
/* Shimmer scan line */
.product-gallery-card .img .shimmer {
  position: absolute;
  top: -100%; left: 0; right: 0;
  height: 40%;
  background: linear-gradient(to bottom, rgba(255,255,255,0.08) 0%, transparent 100%);
  z-index: 2;
  transition: top 0.55s var(--ease-out);
  transform: skewY(-4deg);
  pointer-events: none;
}
.product-gallery-card:hover .img .shimmer {
  top: 110%;
}

/* Swiper navigation buttons */
.product-gallery .swiper-button-prev,
.product-gallery .swiper-button-next {
  width: 44px;
  height: 44px;
  background: white;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  color: var(--navy) !important;
  transition: all 0.3s;
}
.product-gallery .swiper-button-prev:hover,
.product-gallery .swiper-button-next:hover {
  background: var(--red);
  color: white !important;
  box-shadow: var(--shadow-red);
}
.product-gallery .swiper-button-prev::after,
.product-gallery .swiper-button-next::after {
  font-size: 16px;
  font-weight: bold;
}

/* ── PRODUCT INFO ── */
.product-name {
   font-family: 'Inter', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 1rem;
}
.product-meta {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 2rem;
}
.product-meta .category-link {
  color: var(--navy);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s;
}
.product-meta .category-link:hover {
  color: var(--red);
}

/* ── DESCRIPTION BOX ── */
.description-box {
  background: white;
  padding: 24px;
  border-radius: var(--radius-lg);
  border-left: 5px solid var(--red);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}
.description-box h4 {
   font-family: 'Inter', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 15px;
}
.description-box .desc-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-light);
  margin: 0;
}

/* ── PRODUCT CONTENT (HTML from editor) ── */
.product-content-box {
  background: white;
  padding: 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}
.product-content-box h4 {
   font-family: 'Inter', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 20px;
}
.product-content-box .content-html {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}
.product-content-box .content-html h1,
.product-content-box .content-html h2,
.product-content-box .content-html h3,
.product-content-box .content-html h4 {
   font-family: 'Inter', sans-serif;
  color: var(--navy);
  margin-top: 1.5em;
  margin-bottom: 0.75em;
}
.product-content-box .content-html p {
  margin-bottom: 1em;
}
.product-content-box .content-html ul,
.product-content-box .content-html ol {
  padding-left: 20px;
  margin-bottom: 1em;
}
.product-content-box .content-html table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
}
.product-content-box .content-html table th,
.product-content-box .content-html table td {
  border: 1px solid var(--light-gray);
  padding: 8px 12px;
}
.product-content-box .content-html table th {
  background: var(--navy-pale);
  color: var(--navy);
  font-weight: 600;
}

/* ── ACCORDION ── */
.qas-accordion .accordion-item {
  border: 1px solid var(--light-gray);
  border-radius: var(--radius-md) !important;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.qas-accordion .accordion-button {
   font-family: 'Inter', sans-serif;
  font-weight: 600;
  color: var(--navy);
  background: white;
  box-shadow: none;
  padding: 16px 20px;
  transition: all 0.3s;
}
.qas-accordion .accordion-button:not(.collapsed) {
  background: var(--navy);
  color: white;
}
.qas-accordion .accordion-button:focus {
  box-shadow: none;
  border-color: var(--navy);
}
.qas-accordion .accordion-body {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
  padding: 20px;
  background: white;
}

/* ── DOWNLOAD BUTTON ── */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--navy);
  color: white;
   font-family: 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 14px 30px;
  border-radius: 999px;
  text-decoration: none;
  transition: all 0.35s var(--ease-out);
  text-transform: uppercase;
  font-size: 14px;
  margin-top: 10px;
}
.download-btn:hover {
  background: var(--red);
  color: white;
  box-shadow: var(--shadow-red);
  transform: translateY(-2px);
}

/* ── NOT FOUND STATE ── */
.product-not-found {
  text-align: center;
  padding: 80px 20px;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}
.product-not-found h1 {
   font-family: 'Inter', sans-serif;
  font-size: 32px;
  color: var(--text);
  margin-bottom: 1rem;
}
.product-not-found p {
  color: var(--text-light);
  margin-bottom: 2rem;
}
.product-not-found .btn-home {
  display: inline-block;
   font-family: 'Inter', sans-serif;
  font-weight: 700;
  padding: 14px 30px;
  background: var(--navy);
  color: white;
  border-radius: 999px;
  text-decoration: none;
  transition: all 0.3s;
}
.product-not-found .btn-home:hover {
  background: var(--red);
  box-shadow: var(--shadow-red);
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .product-gallery-card .img {
    height: 300px;
  }
  .product-name {
    font-size: 28px;
  }
}