/* ==========================================================================
   1. CSS RESET & VARIABLES (Design Tokens Sampled From Logo)
   ========================================================================== */
:root {
  /* Brand Theme Colors */
  --bg-primary: #090a0f;           /* Deep obsidian black */
  --bg-surface: #12131a;           /* Elevated card layer */
  --bg-surface-elevated: #1a1b26;  /* High elevation & hovers */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(139, 36, 232, 0.45);

  /* Primary Accent: Logo-Sampled Neon Purple */
  --accent-purple: #8b24e8;
  --accent-purple-hover: #751ac9;
  --accent-purple-glow: rgba(139, 36, 232, 0.28);

  /* Secondary Accent: Logo-Sampled Metallic Gold */
  --accent-gold: #e3aa45;
  --accent-gold-hover: #f5c45e;
  --accent-gold-glow: rgba(227, 170, 69, 0.22);

  /* WhatsApp & Status */
  --whatsapp-green: #25d366;
  --whatsapp-hover: #20ba5a;
  --badge-success: #10b981;
  --badge-danger: #ef4444;

  /* Typography Colors */
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  /* Sizing & Geometry */
  --max-width: 1220px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

/* Offset for sticky header so anchor scrolling lands cleanly */
section[id] {
  scroll-margin-top: 96px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Hind Siliguri", "Noto Sans Bengali", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* ==========================================================================
   2. HEADER & PROMINENT LOGO BRANDING (Homepage & Details Shared)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(9, 10, 15, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--text-main);
  flex-shrink: 0;
}

.brand-logo-img {
  width: auto;
  height: 56px;
  max-width: 95px;
  object-fit: contain;
  filter: drop-shadow(0 0 14px var(--accent-purple-glow));
  flex-shrink: 0;
  transition: transform var(--transition-smooth);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.04);
}

.brand-name {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: baseline;
}

.brand-purple {
  color: var(--accent-purple);
  text-shadow: 0 0 16px var(--accent-purple-glow);
}

.brand-gold {
  color: var(--accent-gold);
  text-shadow: 0 0 14px var(--accent-gold-glow);
}

.site-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color var(--transition-smooth);
  padding: 0.35rem 0.2rem;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent-gold);
}

/* ==========================================================================
   3. HERO BANNER CAROUSEL (Canva Banners & Transparent Clickable CTA)
   ========================================================================== */
.hero-section {
  padding-top: 1.5rem;
  padding-bottom: 2rem;
}

.carousel-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
  /* Responsive aspect-ratio matching standard Canva e-commerce banners */
  aspect-ratio: 2.5 / 1;
  min-height: 240px;
  max-height: 480px;
}

.carousel-track {
  display: flex;
  transition: transform 0.45s cubic-bezier(0.25, 1, 0.5, 1);
  height: 100%;
}

.carousel-slide {
  min-width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  cursor: default; /* Entire slide is not a click trap */
}

/* Banner Background Image Layer */
.slide-banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 1;
}

/* Scrim overlay for non-embedded banners */
.slide-scrim-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(9, 10, 15, 0.88) 0%, rgba(9, 10, 15, 0.65) 50%, rgba(9, 10, 15, 0.2) 100%);
  z-index: 2;
  pointer-events: none;
}

.slide-content {
  position: relative;
  max-width: 650px;
  z-index: 5;
  padding: 3.5rem 3rem;
}

/* ==========================================================================
   TRANSPARENT CLICKABLE CTA HOTSPOT OVER CANVA BANNER
   ========================================================================== */
.banner-cta-hotspot {
  position: absolute;
  z-index: 10;
  display: block;
  background: transparent;
  border: none;
  cursor: pointer;
  text-decoration: none;
  border-radius: var(--radius-sm);
  -webkit-tap-highlight-color: transparent;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

/* Subtle, polished hover feedback right over the Canva button */
.banner-cta-hotspot:hover {
  box-shadow: 0 0 18px var(--accent-purple-glow);
  transform: scale(1.02);
}

/* Clear keyboard focus indicator for accessibility */
.banner-cta-hotspot:focus-visible {
  outline: 3px solid var(--accent-gold);
  outline-offset: 3px;
  box-shadow: 0 0 20px var(--accent-gold-glow);
}

/* Standard visible CTA for non-embedded banners */
.btn-primary,
.banner-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.95rem;
  background: linear-gradient(135deg, var(--accent-purple), #751ac9);
  color: #ffffff;
  font-weight: 800;
  font-size: 1rem;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-smooth);
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 10;
  box-shadow: 0 4px 20px var(--accent-purple-glow);
}

.btn-primary:hover,
.banner-cta-btn:hover {
  background: linear-gradient(135deg, #9d4edd, var(--accent-purple));
  transform: translateY(-2px);
  box-shadow: 0 6px 26px var(--accent-purple-glow);
  color: #ffffff;
}

.btn-primary:focus-visible,
.banner-cta-btn:focus-visible {
  outline: 3px solid var(--accent-gold);
  outline-offset: 3px;
}

.cta-arrow-icon {
  font-size: 1.05rem;
  transition: transform var(--transition-smooth);
}

.banner-cta-btn:hover .cta-arrow-icon {
  transform: translateY(2px);
}

/* Carousel Arrow Controls */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(18, 19, 26, 0.85);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 20;
  transition: all var(--transition-smooth);
  backdrop-filter: blur(8px);
}

.carousel-btn:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.carousel-btn.prev { left: 1rem; }
.carousel-btn.next { right: 1rem; }

/* Carousel Indicators */
.carousel-dots {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 20;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.35);
  border: none;
  cursor: pointer;
  transition: width var(--transition-smooth), background-color var(--transition-smooth);
}

.dot.active {
  width: 28px;
  border-radius: 20px;
  background-color: var(--accent-gold);
  box-shadow: 0 0 10px var(--accent-gold-glow);
}

/* ==========================================================================
   4. CATALOG SECTION & CONTROLS (Homepage)
   ========================================================================== */
.catalog-section {
  padding: 3rem 0 4.5rem;
}

.section-header {
  margin-bottom: 2rem;
}

.section-header.text-center {
  text-align: center;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.35rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-top: 0.35rem;
}

/* Catalog Toolbar */
.catalog-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.25rem;
  margin-bottom: 1.25rem;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.filter-btn:hover {
  color: var(--text-main);
  background: var(--bg-surface-elevated);
}

.filter-btn.active {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent-purple), #751ac9);
  border-color: var(--accent-purple);
  box-shadow: 0 3px 12px var(--accent-purple-glow);
}

.sort-wrapper {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.sort-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 600;
}

.select-container {
  position: relative;
}

.sort-select {
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  padding: 0.55rem 2.25rem 0.55rem 0.95rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-smooth);
}

.sort-select:focus {
  border-color: var(--accent-gold);
}

.select-container::after {
  content: "▾";
  position: absolute;
  right: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.75rem;
}

.catalog-status-bar {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.product-count-text {
  font-size: 0.88rem;
  color: var(--text-dim);
}

/* ==========================================================================
   5. PRODUCT GRID & CARD DESIGN (Homepage)
   ========================================================================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.35rem;
}

.product-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
  position: relative;
  cursor: pointer;
  outline: none;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: rgba(139, 36, 232, 0.45);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.45), 0 0 15px rgba(139, 36, 232, 0.15);
}

.product-card:focus-visible {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-glow);
}

.card-media-wrap {
  position: relative;
  width: 100%;
  padding-top: 85%;
  background: radial-gradient(circle at center, #191b26 0%, #101117 100%);
  overflow: hidden;
}

.card-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1rem;
  transition: transform var(--transition-smooth);
}

.product-card:hover .card-img {
  transform: scale(1.06);
}

.card-badges {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  right: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
  z-index: 2;
}

.badge-offer {
  background: linear-gradient(135deg, var(--accent-purple), #6366f1);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.22rem 0.6rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px var(--accent-purple-glow);
}

.badge-stock {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.22rem 0.6rem;
  border-radius: var(--radius-sm);
  background-color: rgba(9, 10, 15, 0.85);
  backdrop-filter: blur(4px);
}

.badge-stock.in-stock {
  color: var(--badge-success);
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.badge-stock.out-of-stock {
  color: var(--badge-danger);
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-category {
  font-size: 0.74rem;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.card-title {
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8rem;
}

.card-price-row {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  margin-bottom: 1.2rem;
  margin-top: auto;
}

.price-current {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
}

.price-regular-strike {
  font-size: 0.92rem;
  color: var(--text-dim);
  text-decoration: line-through;
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}

.btn-card-details,
.btn-card-order {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 0.5rem;
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-smooth);
  text-align: center;
  border: 1px solid transparent;
}

.btn-card-details {
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-card-details:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-card-order {
  background: linear-gradient(135deg, var(--accent-purple), #751ac9);
  color: #ffffff;
}

.btn-card-order:hover {
  background: linear-gradient(135deg, #9d4edd, var(--accent-purple));
  box-shadow: 0 2px 10px var(--accent-purple-glow);
}

.btn-card-order.disabled {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
  cursor: not-allowed;
  pointer-events: none;
}

.catalog-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3.5rem 1rem;
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-subtle);
}

/* Numbered Pagination Layout */
.pagination-wrapper {
  margin-top: 3rem;
  display: flex;
  justify-content: center;
}

.pagination-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.7rem;
}

.page-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 0.94rem;
  font-weight: 700;
  min-width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.page-btn:hover:not(:disabled):not(.disabled) {
  color: var(--text-main);
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
}

.page-btn.num-btn.active {
  background: linear-gradient(135deg, var(--accent-purple), #751ac9);
  color: #ffffff;
  box-shadow: 0 2px 12px var(--accent-purple-glow);
  cursor: default;
}

.page-btn.nav-btn {
  padding: 0 0.95rem;
}

.page-btn:disabled,
.page-btn.disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

/* ==========================================================================
   6. CONTACTS SECTION (#contacts on Homepage)
   ========================================================================== */
.contacts-section {
  padding: 5rem 0;
  background-color: #090a0f;
  border-top: 1px solid var(--border-subtle);
}

.contact-hub-wrapper {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 1.75rem;
}

.contact-wa-box {
  background: radial-gradient(circle at 90% 10%, rgba(37, 211, 102, 0.08), transparent 60%),
              linear-gradient(145deg, var(--bg-surface), #171924);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.wa-sub-badge {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--whatsapp-green);
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.wa-box-heading {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.wa-box-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.btn-wa-contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.9rem 1.85rem;
  background-color: var(--whatsapp-green);
  color: #090a0f;
  font-weight: 800;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 18px rgba(37, 211, 102, 0.28);
}

.btn-wa-contact:hover {
  background-color: var(--whatsapp-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
}

.social-channels-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.social-box-heading {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.social-links-grid {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.social-btn {
  display: flex;
  align-items: center;
  gap: 0.95rem;
  padding: 0.8rem 1.35rem;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition-smooth);
}

.social-btn:hover {
  transform: translateX(4px);
  border-color: rgba(255, 255, 255, 0.2);
}

.social-btn.official-facebook:hover {
  background-color: rgba(24, 119, 242, 0.12);
  border-color: #1877F2;
  color: #ffffff;
}

.social-btn.official-instagram:hover {
  background-color: rgba(225, 48, 108, 0.12);
  border-color: #fd5949;
  color: #ffffff;
}

.social-btn.official-tiktok:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
  color: #ffffff;
}

/* ==========================================================================
   7. DELIVERY & POLICY SECTION (#delivery-policy on Homepage)
   ========================================================================== */
.policy-section {
  padding: 5rem 0;
  background-color: #0d0e14;
  border-top: 1px solid var(--border-subtle);
}

.delivery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.25rem;
}

.delivery-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.85rem 1.6rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.delivery-card:hover {
  transform: translateY(-3px);
  border-color: rgba(139, 36, 232, 0.4);
}

.delivery-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(139, 36, 232, 0.12);
  color: var(--accent-purple);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.delivery-card-title {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.delivery-card-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.delivery-card-text strong {
  color: var(--text-main);
}

.delivery-specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: auto;
}

.delivery-specs-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.95rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
  padding-bottom: 0.45rem;
}

.delivery-specs-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.spec-label {
  color: var(--text-muted);
}

.spec-value {
  font-weight: 700;
  color: var(--text-main);
}

.spec-value.highlight {
  color: var(--accent-gold);
}

/* ==========================================================================
   8. PRODUCT DETAILS PAGE SPECIFIC STYLES (`product.html`)
   ========================================================================== */
.product-details-section {
  padding: 2.5rem 0 5rem;
  flex-grow: 1;
}

.breadcrumb-nav {
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.92rem;
  flex-wrap: wrap;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-gold);
  text-decoration: none;
  font-weight: 700;
  transition: all var(--transition-smooth);
}

.back-link:hover {
  color: #ffffff;
  transform: translateX(-3px);
}

.breadcrumb-separator {
  color: var(--text-dim);
}

.breadcrumb-current {
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

/* Two-Column Grid */
.product-details-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 3rem;
  align-items: start;
}

/* Left: Gallery Component */
.product-gallery-wrap {
  position: sticky;
  top: 100px;
}

.main-image-box {
  position: relative;
  background: radial-gradient(circle at center, #191b26 0%, #101117 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.main-image-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-smooth);
}

/* Genuinely blank state for missing product image */
.main-image-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  color: var(--text-dim);
  font-size: 0.95rem;
  font-weight: 600;
  width: 100%;
  height: 100%;
  user-select: none;
}

.main-image-empty .empty-icon {
  font-size: 2.2rem;
  opacity: 0.4;
}

.gallery-thumbnails {
  display: flex;
  gap: 0.85rem;
  margin-top: 1.1rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.thumb-btn {
  width: 78px;
  height: 78px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  border: 2px solid var(--border-subtle);
  padding: 0.4rem;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.thumb-btn img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.thumb-btn:hover {
  border-color: rgba(139, 36, 232, 0.5);
  transform: translateY(-2px);
}

.thumb-btn.active {
  border-color: var(--accent-purple);
  box-shadow: 0 0 14px var(--accent-purple-glow);
}

/* Right: Product Info & Order */
.product-meta-header {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.details-category {
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--accent-gold);
  letter-spacing: 0.08em;
}

.details-title {
  font-size: 2.15rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 1.35rem;
  letter-spacing: -0.01em;
}

/* Pricing Box */
.details-price-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.6rem;
  margin-bottom: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.price-box-left {
  display: flex;
  align-items: baseline;
  gap: 0.95rem;
}

.details-price-current {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--text-main);
}

.details-price-regular {
  font-size: 1.2rem;
  color: var(--text-dim);
  text-decoration: line-through;
}

.details-save-badge {
  background: rgba(139, 36, 232, 0.15);
  border: 1px solid var(--accent-purple);
  color: var(--accent-purple);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.35rem 0.75rem;
  border-radius: 50px;
}

/* Purchase Controls & WhatsApp CTA */
.details-action-group {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  margin-bottom: 2rem;
}

.quantity-control-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.35rem;
  padding-bottom: 1.35rem;
  border-bottom: 1px solid var(--border-subtle);
}

.quantity-label {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
}

.quantity-stepper {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface-elevated);
  overflow: hidden;
}

.qty-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  width: 42px;
  height: 42px;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-smooth);
}

.qty-btn:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--accent-gold);
}

.qty-btn:disabled {
  color: var(--text-dim);
  cursor: not-allowed;
}

.qty-input {
  width: 52px;
  text-align: center;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.05rem;
  font-weight: 800;
  appearance: textfield;
  -moz-appearance: textfield;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.btn-whatsapp-order {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  width: 100%;
  padding: 1.05rem 1.6rem;
  background-color: var(--whatsapp-green);
  color: #090a0f;
  font-size: 1.1rem;
  font-weight: 800;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-smooth);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp-order:hover {
  background-color: var(--whatsapp-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(37, 211, 102, 0.45);
}

.btn-whatsapp-order.disabled {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-dim);
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
  transform: none;
}

.wa-btn-icon {
  font-size: 1.35rem;
  line-height: 1;
}

.order-note-text {
  margin-top: 0.85rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: center;
}

/* Dedicated Bengali Sections: পণ্যের বিবরণ & স্পেসিফিকেশন */
.details-section-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-bottom: 1.75rem;
}

.details-section-heading {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 1.15rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.details-section-heading .heading-icon {
  font-size: 1.15rem;
}

.details-description-content {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
  white-space: pre-line;
}

/* Specifications Table */
.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table tr {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.specs-table tr:last-child {
  border-bottom: none;
}

.specs-key {
  padding: 0.85rem 0.6rem 0.85rem 0;
  color: var(--text-muted);
  font-size: 0.94rem;
  font-weight: 600;
  width: 42%;
}

.specs-val {
  padding: 0.85rem 0 0.85rem 0.6rem;
  color: var(--text-main);
  font-size: 0.94rem;
  font-weight: 700;
}

/* Return Policy Card */
.return-policy-card {
  background: linear-gradient(145deg, var(--bg-surface), #1a1c28);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent-purple);
  border-radius: var(--radius-md);
  padding: 1.85rem 2rem;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
  margin-top: 2rem;
}

.return-policy-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.return-policy-icon {
  color: var(--accent-purple);
  display: flex;
  align-items: center;
  justify-content: center;
}

.return-policy-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
}

.return-policy-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.return-policy-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.return-policy-list li::before {
  content: "•";
  position: absolute;
  left: 0.35rem;
  color: var(--accent-gold);
  font-size: 1.3rem;
  line-height: 1;
  top: -0.1rem;
}

/* Bengali Fallback / Missing Product Box */
.product-error-box {
  background-color: var(--bg-surface);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 4.5rem 1.75rem;
  text-align: center;
  max-width: 620px;
  margin: 3.5rem auto;
}

.error-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.product-error-box h2 {
  font-size: 1.85rem;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.product-error-box p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1rem;
}

/* ==========================================================================
   9. FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-primary);
  padding: 3rem 0 2rem;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.35rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
}

.footer-logo-img {
  width: auto;
  height: 52px;
  max-width: 85px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px var(--accent-purple-glow));
}

.footer-tagline {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1.35rem;
  width: 100%;
  font-size: 0.84rem;
  color: var(--text-dim);
}

/* ==========================================================================
   10. RESPONSIVE BREAKPOINTS (Desktop, Tablet, Mobile)
   ========================================================================== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .delivery-grid { grid-template-columns: 1fr; gap: 1rem; }
  .contact-hub-wrapper { grid-template-columns: 1fr; }
  .product-details-grid { gap: 2rem; }
}

@media (max-width: 768px) {
  .header-inner {
    height: 76px;
  }
  .brand-logo-img {
    height: 48px;
    max-width: 80px;
  }
  .brand-name {
    font-size: 1.25rem;
  }
  .site-nav ul {
    gap: 1.1rem;
  }
  .nav-link {
    font-size: 0.88rem;
  }
  .carousel-container {
    aspect-ratio: 2.2 / 1;
    min-height: 200px;
  }
  .carousel-btn { display: none; }
  .catalog-toolbar { flex-direction: column; align-items: stretch; }
  .category-filters { overflow-x: auto; padding-bottom: 0.5rem; flex-wrap: nowrap; }
  .filter-btn { white-space: nowrap; }
  .sort-wrapper { justify-content: space-between; width: 100%; border-top: 1px solid var(--border-subtle); padding-top: 0.75rem; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 0.9rem; }
  .return-policy-card { padding: 1.5rem; }

  /* Product Details Tablet/Mobile */
  .product-details-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .product-gallery-wrap {
    position: static;
  }
  .details-title {
    font-size: 1.65rem;
  }
  .details-price-current {
    font-size: 1.8rem;
  }
  .details-price-box {
    padding: 1.1rem 1.25rem;
  }
  .specs-key {
    width: 48%;
  }
}

@media (max-width: 480px) {
  .header-inner {
    height: 72px;
  }
  .brand-logo {
    gap: 0.6rem;
  }
  .brand-logo-img {
    height: 42px;
    max-width: 70px;
  }
  .brand-name {
    font-size: 1.15rem;
  }
  .site-nav ul {
    gap: 0.75rem;
  }
  .nav-link {
    font-size: 0.82rem;
    padding: 0.2rem 0;
  }
  .carousel-container {
    aspect-ratio: 2 / 1;
    min-height: 180px;
  }
  .product-grid { grid-template-columns: 1fr; }
  .card-actions { grid-template-columns: 1fr; }
  .btn-wa-contact { width: 100%; }
  .btn-whatsapp-order { font-size: 1rem; padding: 0.95rem 1rem; }
}