/* ============================================================
   NEXIA MARKETPLACE — PAGES (CATEGORY + PRODUCT) v2
   Light/Dark adaptive via CSS variables
   ============================================================ */

/* ════════════════════════════════════════════════════════════
   PAGE NAVIGATION (pill switcher for prototype)
   ════════════════════════════════════════════════════════════ */
.page-nav {
  position: fixed;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  gap: var(--space-2);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  padding: 6px;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.page-nav-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  transition: all var(--duration-base) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
  min-height: 36px;
  display: flex; align-items: center;
}
.page-nav-btn:hover { color: var(--text-primary); background: var(--bg-raised); }
.page-nav-btn.active {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: var(--shadow-brand);
}

.page-view { display: none; }
.page-view.active { display: block; }

/* ════════════════════════════════════════════════════════════
   BREADCRUMB
/* ════════════════════════════════════════════════════════════
   BREADCRUMBS
   ════════════════════════════════════════════════════════════ */
.breadcrumb-section {
  padding-block: var(--space-8) var(--space-4);
}
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  box-shadow: var(--shadow-sm);
}
.breadcrumb a { 
  color: var(--text-secondary); 
  text-decoration: none;
  transition: all var(--duration-fast);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}
.breadcrumb a:hover { 
  color: var(--text-primary);
  background: var(--bg-raised);
}
.breadcrumb .sep { 
  color: var(--text-tertiary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.breadcrumb .current { 
  color: var(--text-primary); 
  font-weight: 600;
  padding: 2px 8px;
}

/* ════════════════════════════════════════════════════════════
   CATEGORY / ARCHIVE PAGE
   ════════════════════════════════════════════════════════════ */
.archive-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-8);
  padding-block: var(--space-8) var(--space-14);
  align-items: start;
}

/* Filter Sidebar */
.filter-sidebar {
  position: sticky;
  top: 100px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.filter-sidebar-header {
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
}
.filter-sidebar-header .title {
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--text-primary);
  display: flex; align-items: center; gap: var(--space-2);
}
.filter-clear {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-brand);
  transition: color var(--duration-fast);
}
.filter-clear:hover { opacity: 0.75; }

.filter-group {
  padding: var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
}
.filter-group:last-child { border-bottom: none; }
.filter-group-title {
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
}
.filter-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
  cursor: pointer;
  padding: 5px 0;
  min-height: 36px;
}
.filter-option:last-child { margin-bottom: 0; }
.filter-option-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.filter-checkbox {
  width: 18px; height: 18px;
  border-radius: 5px;
  border: 1.5px solid var(--border-default);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--duration-fast);
  flex-shrink: 0;
  background: var(--bg-card);
}
.filter-checkbox.checked {
  background: var(--gradient-brand);
  border-color: transparent;
  color: #fff;
}
.filter-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}
.filter-option:hover .filter-label { color: var(--text-primary); }
.filter-count {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-raised);
  padding: 2px 7px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}

/* Price Range Slider */
.price-range-wrap { padding-top: var(--space-2); }
.price-range-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
  font-weight: 600;
}
.price-range-labels span { color: var(--text-primary); font-weight: 700; }
.range-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: linear-gradient(to right,
    var(--brand-500) 0%,
    var(--brand-500) 60%,
    var(--bg-raised) 60%,
    var(--bg-raised) 100%);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--brand-500);
  border: 2px solid #fff;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform var(--duration-fast);
}
.range-slider::-webkit-slider-thumb:hover { transform: scale(1.15); }

/* Star Rating Filters */
.star-rating-option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 0;
  cursor: pointer;
  transition: opacity var(--duration-fast);
  min-height: 36px;
}
.star-rating-option:hover { opacity: 0.75; }
.star-bar {
  flex: 1;
  height: 4px;
  background: var(--bg-raised);
  border-radius: 2px;
  overflow: hidden;
}
.star-bar-fill { height: 100%; background: var(--gold-400); border-radius: 2px; }
.star-count { font-size: var(--text-xs); color: var(--text-tertiary); font-weight: 600; min-width: 24px; text-align: right; }

/* ── Archive Toolbar ────────────────────────────────────── */
.archive-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
  flex-wrap: wrap;
}
.archive-count {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}
.archive-count strong { color: var(--text-primary); font-weight: 700; }

.archive-sort-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.sort-select-wrap { position: relative; }
.sort-select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 9px 36px 9px 14px;
  font-size: var(--text-sm);
  color: var(--text-primary);
  outline: none;
  cursor: pointer;
  transition: all var(--duration-fast);
  box-shadow: var(--shadow-xs);
  min-height: 40px;
}
.sort-select:hover { border-color: var(--border-strong); }
.sort-select:focus { border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(99,102,241,0.12); }
.sort-select-icon {
  position: absolute;
  right: 10px; top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-tertiary);
}

.view-toggle { display: flex; gap: var(--space-1); }
.view-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  color: var(--text-tertiary);
  transition: all var(--duration-fast);
  cursor: pointer;
  min-height: 36px;
}
.view-btn:hover { color: var(--text-primary); background: var(--bg-raised); }
.view-btn.active {
  background: var(--gradient-brand);
  border-color: transparent;
  color: #fff;
}

/* Active Filter Tags */
.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.filter-tag {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  background: rgba(99,102,241,0.08);
  border: 1px solid rgba(99,102,241,0.18);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-brand);
  cursor: pointer;
  transition: all var(--duration-fast);
}
.filter-tag:hover {
  background: rgba(99,102,241,0.15);
  border-color: rgba(99,102,241,0.30);
}

/* Archive Products Grid */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
.archive-grid.list-view { grid-template-columns: 1fr; }
.archive-grid.list-view .product-card {
  flex-direction: row;
}
.archive-grid.list-view .product-card-thumb {
  width: 200px;
  flex-shrink: 0;
  aspect-ratio: auto;
  height: auto;
}
.archive-grid.list-view .product-card-body { padding: var(--space-5); }

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-10);
  flex-wrap: wrap;
}
.page-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  cursor: pointer;
  transition: all var(--duration-fast);
  min-height: 40px;
}
.page-btn:hover { color: var(--text-primary); border-color: var(--border-strong); background: var(--bg-raised); }
.page-btn.active {
  background: var(--gradient-brand);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-brand);
}
.page-btn.dots { cursor: default; border: none; background: none; color: var(--text-muted); }
.page-btn.dots:hover { color: var(--text-muted); background: none; }

/* ════════════════════════════════════════════════════════════
   PRODUCT DETAIL PAGE
   ════════════════════════════════════════════════════════════ */
.product-page {
  padding-block: var(--space-8) var(--space-16);
  background: var(--bg-base);
}
.product-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-10);
  align-items: start;
}

/* Gallery */
.product-gallery { position: relative; }
.gallery-main {
  width: 100%;
  aspect-ratio: 16/10;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  margin-bottom: var(--space-4);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  box-shadow: var(--shadow-card);
}
.gallery-main-demo {
  width: 90%;
  height: 85%;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
}
.gallery-demo-header {
  height: 32px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex; align-items: center; padding: 0 10px; gap: 5px;
}
.gallery-demo-body {
  flex: 1;
  display: grid;
  grid-template-columns: 160px 1fr;
}
.gallery-demo-nav {
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  padding: 10px 6px;
  display: flex; flex-direction: column; gap: 4px;
}
.gdnav-item {
  height: 26px;
  background: var(--bg-raised);
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}
.gdnav-item.active {
  background: rgba(99,102,241,0.15);
  border-color: rgba(99,102,241,0.25);
}
.gallery-demo-content {
  padding: 10px;
  display: flex; flex-direction: column; gap: 6px;
}
.gdcontent-header {
  height: 18px; background: var(--bg-raised); border-radius: 4px;
  border: 1px solid var(--border-subtle); width: 60%;
}
.gdcontent-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}
.gdcontent-cell {
  background: var(--bg-raised);
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}
.gdcontent-cell.accent {
  background: rgba(99,102,241,0.12);
  border-color: rgba(99,102,241,0.20);
}

.gallery-zoom-btn {
  position: absolute;
  bottom: var(--space-4); right: var(--space-4);
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all var(--duration-fast);
}
.gallery-zoom-btn:hover { color: var(--text-primary); background: var(--bg-raised); }

.gallery-thumbs {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-1);
}
.gallery-thumb {
  width: 88px; height: 64px;
  flex-shrink: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-surface);
  border: 2px solid var(--border-default);
  cursor: pointer;
  transition: all var(--duration-fast);
  display: flex; align-items: center; justify-content: center;
}
.gallery-thumb.active { border-color: var(--brand-500); }
.gallery-thumb:hover  { border-color: var(--border-brand); }
.thumb-demo {
  width: 85%; height: 85%;
  background: var(--bg-card);
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  display: flex; flex-direction: column; gap: 3px;
  padding: 4px;
}
.thumb-demo-bar { height: 4px; background: var(--bg-raised); border-radius: 2px; }
.thumb-demo-bar.accent { background: rgba(99,102,241,0.20); width: 55%; }
.thumb-demo-grid { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.thumb-demo-cell { background: var(--bg-raised); border-radius: 2px; }
.thumb-demo-cell.accent { background: rgba(99,102,241,0.15); }

/* Product Info */
.product-info {}
.product-badges {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.product-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: var(--space-4);
}
.product-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.product-rating-block {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.rating-number {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-base);
  color: var(--text-primary);
}
.rating-count { font-size: var(--text-xs); color: var(--text-tertiary); }
.product-sales {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  border-left: 1px solid var(--border-subtle);
  padding-left: var(--space-5);
}
.product-updated {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  border-left: 1px solid var(--border-subtle);
  padding-left: var(--space-5);
}
.product-seller-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-xs);
}
.seller-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-sm);
  color: #fff;
  flex-shrink: 0;
}
.seller-info .name {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.seller-info .sales { font-size: var(--text-xs); color: var(--text-tertiary); margin-top: 2px; }
.seller-follow-btn {
  margin-left: auto;
  padding: 7px 14px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-brand);
  border: 1.5px solid var(--border-brand);
  background: transparent;
  transition: all var(--duration-fast);
  cursor: pointer;
  white-space: nowrap;
  min-height: 36px;
}
.seller-follow-btn:hover {
  background: rgba(99,102,241,0.08);
}

/* Product Sections (Replacing Tabs) */
.product-section {
  padding-block: var(--space-10);
  border-bottom: 1px solid var(--border-subtle);
}
.product-section:last-child {
  border-bottom: none;
}
.product-section-header {
  margin-bottom: var(--space-6);
}
.product-section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}
.product-section-subtitle {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.product-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.8;
}
.product-desc p + p { margin-top: var(--space-5); }

.feature-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.feature-list .check-icon {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(16,185,129,0.10);
  border: 1px solid rgba(16,185,129,0.20);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--green-500);
  margin-top: 1px;
}

/* Review Stats */
.review-stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-10);
  padding: var(--space-8);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  margin-bottom: var(--space-8);
  align-items: center;
}
.overall-rating {
  text-align: center;
  padding-right: var(--space-6);
  border-right: 1px solid var(--border-subtle);
}
.overall-score {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}
.overall-count { font-size: var(--text-xs); color: var(--text-tertiary); margin-top: 4px; }

.rating-bars { display: flex; flex-direction: column; gap: var(--space-2); }
.rating-bar-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}
.rating-bar-row .stars { font-size: 10px; min-width: 50px; }
.rating-bar-bg { flex: 1; height: 6px; background: var(--bg-raised); border-radius: 3px; overflow: hidden; }
.rating-bar-fill { height: 100%; background: var(--gold-400); border-radius: 3px; }
.rating-bar-count { min-width: 28px; text-align: right; }

.review-list { display: flex; flex-direction: column; gap: var(--space-5); }
.review-item {
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
}
.review-item:last-child { border-bottom: none; padding-bottom: 0; }
.review-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.review-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xs);
  color: #fff;
  flex-shrink: 0;
}
.review-author-name { font-size: var(--text-sm); font-weight: 700; color: var(--text-primary); }
.review-date { font-size: 11px; color: var(--text-tertiary); }
.review-text { font-size: var(--text-base); color: var(--text-secondary); line-height: 1.7; }

/* Changelog */
.changelog-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
}
.changelog-list::before {
  content: '';
  position: absolute;
  top: 10px; bottom: 10px; left: 16px;
  width: 2px;
  background: var(--border-subtle);
}
.changelog-item {
  display: flex;
  gap: var(--space-6);
  position: relative;
}
.changelog-dot {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--brand-500);
  box-shadow: 0 0 0 4px var(--bg-base);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  z-index: 1;
}
.changelog-dot-inner {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--brand-500);
}
.changelog-content {
  flex: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}
.changelog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
  gap: var(--space-3);
}
.changelog-version {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-display);
}
.changelog-date {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-weight: 500;
}
.changelog-notes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.changelog-notes li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.changelog-badge {
  padding: 2px 8px;
  border-radius: var(--radius-md);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 3px;
}
.changelog-badge.new { background: rgba(16,185,129,0.1); color: var(--green-600); }
.changelog-badge.fix { background: rgba(239,68,68,0.1); color: var(--red-600); }
.changelog-badge.update { background: rgba(59,130,246,0.1); color: var(--blue-600); }

/* Compatibility tags */
.compat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
.compat-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}
.compat-icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(16,185,129,0.10);
  border: 1px solid rgba(16,185,129,0.18);
  display: flex; align-items: center; justify-content: center;
  color: var(--green-500);
  flex-shrink: 0;
}
.compat-label { font-size: var(--text-sm); font-weight: 600; color: var(--text-primary); }
.compat-ver   { font-size: 11px; color: var(--text-tertiary); }

/* Bundle Specific Styles */
.bundle-savings-alert {
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.bundle-savings-icon {
  width: 32px; height: 32px;
  background: var(--green-500);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.bundle-savings-text {
  font-size: var(--text-sm);
  color: var(--text-primary);
  font-weight: 600;
}
.bundle-savings-text strong {
  color: var(--green-600);
  font-size: var(--text-base);
}

.bundle-includes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-6);
}
.bundle-include-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--duration-fast);
}
.bundle-include-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.bundle-include-thumb {
  aspect-ratio: 16/10;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-4);
}
.bundle-include-thumb-inner {
  width: 100%; height: 100%;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column;
}
.bundle-include-header {
  height: 12px; border-bottom: 1px solid var(--border-subtle);
}
.bundle-include-body {
  flex: 1; padding: 4px; display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
}
.bundle-include-body > div { background: var(--bg-raised); border-radius: 2px; }

.bundle-include-info {
  padding: var(--space-4);
}
.bundle-include-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.bundle-include-desc {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}
.bundle-include-value {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-tertiary);
}

/* Purchase Sidebar */
.purchase-sidebar { 
  display: flex; 
  flex-direction: column; 
  gap: var(--space-6); 
  position: sticky;
  top: 100px;
}
.purchase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.purchase-card-header {
  padding: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}
.purchase-price-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
  flex-wrap: wrap;
}
.purchase-price {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.purchase-price-original {
  font-size: var(--text-xl);
  color: var(--text-tertiary);
  text-decoration: line-through;
}
.purchase-discount-tag {
  padding: 3px 10px;
  background: rgba(16,185,129,0.12);
  color: var(--green-600);
  border: 1px solid rgba(16,185,129,0.20);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.04em;
}
.purchase-license-note {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  line-height: 1.5;
}
.purchase-card-body { padding: var(--space-8); display: flex; flex-direction: column; gap: var(--space-4); }
.purchase-btn-gumroad {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  width: 100%;
  padding: 16px;
  background: var(--gradient-brand);
  color: #fff;
  border-radius: var(--radius-xl);
  font-size: var(--text-base);
  font-weight: 700;
  box-shadow: var(--shadow-brand);
  transition: all var(--duration-fast);
}
.purchase-btn-gumroad:hover { opacity: 0.92; transform: translateY(-1px); box-shadow: var(--shadow-brand-lg); }
.purchase-btn-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: 13px;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-default);
  color: var(--text-secondary);
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: all var(--duration-fast);
  cursor: pointer;
}
.purchase-btn-preview:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: var(--bg-raised);
}
.purchase-includes { display: flex; flex-direction: column; gap: var(--space-2); }
.purchase-include-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-secondary);
}
.include-icon {
  color: var(--green-500);
  flex-shrink: 0;
}

.purchase-guarantee {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4);
  background: rgba(16,185,129,0.06);
  border: 1px solid rgba(16,185,129,0.15);
  border-radius: var(--radius-xl);
  margin-top: var(--space-2);
}
.guarantee-icon {
  width: 38px; height: 38px;
  border-radius: var(--radius-md);
  background: rgba(16,185,129,0.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--green-500);
  flex-shrink: 0;
}
.guarantee-text .title { font-size: var(--text-sm); font-weight: 700; color: var(--text-primary); margin-bottom: 2px; }
.guarantee-text .desc  { font-size: 11px; color: var(--text-tertiary); line-height: 1.4; }

.sidebar-promo {
  background: var(--gradient-brand);
  border-radius: var(--radius-2xl);
  padding: var(--space-5);
  position: relative;
  overflow: hidden;
}
.sidebar-promo::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(255,255,255,0.14) 0%, transparent 60%);
  pointer-events: none;
}
.sidebar-promo > * { position: relative; z-index: 1; }
.sidebar-promo .promo-icon {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-3);
}
.sidebar-promo .promo-title { font-size: var(--text-sm); font-weight: 800; color: #fff; margin-bottom: 4px; line-height: 1.2; }
.sidebar-promo .promo-desc  { font-size: var(--text-xs); color: rgba(255,255,255,0.75); margin-bottom: var(--space-4); line-height: 1.4; }
.sidebar-promo .promo-btn {
  display: flex; align-items: center; justify-content: center; gap: var(--space-2);
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  padding: 9px 14px;
  border-radius: var(--radius-lg);
  font-size: var(--text-xs);
  font-weight: 700;
  transition: all var(--duration-fast);
  cursor: pointer;
  width: 100%;
}
.sidebar-promo .promo-btn:hover { background: rgba(255,255,255,0.28); }

/* Related Products */
.related-section {
  padding-block: var(--space-12);
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

/* ── Responsive Archive & Product ──────────────────────── */
@media (max-width: 1100px) {
  .archive-layout { grid-template-columns: 220px 1fr; gap: var(--space-6); }
  .archive-grid   { grid-template-columns: repeat(2, 1fr); }
  .product-layout { grid-template-columns: 1fr 320px; }
  .related-grid   { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .archive-layout  { grid-template-columns: 1fr; }
  .filter-sidebar  { position: static; display: none; }
  .filter-sidebar.mobile-open { display: block; }
  .product-layout  { grid-template-columns: 1fr; gap: var(--space-10); }
  .product-gallery { position: static; }
  .purchase-sidebar { position: static; }
  .related-grid    { grid-template-columns: repeat(2, 1fr); }
  .review-stats    { grid-template-columns: 1fr; gap: var(--space-5); }
  .overall-rating  { border-right: none; padding-right: 0; border-bottom: 1px solid var(--border-subtle); padding-bottom: var(--space-5); }
}
@media (max-width: 640px) {
  .archive-grid    { grid-template-columns: 1fr; }
  .related-grid    { grid-template-columns: repeat(2, 1fr); }
  .compat-grid     { grid-template-columns: 1fr; }
  .product-page    { padding-block: var(--space-5) var(--space-10); }
}

/* ════════════════════════════════════════════════════════════
   ABOUT US PAGE
   ════════════════════════════════════════════════════════════ */
.about-hero {
  background: radial-gradient(circle at 50% 0%, var(--bg-raised), var(--bg-base));
  padding-block: var(--space-24) var(--space-16);
  border-bottom: 1px solid var(--border-subtle);
}
.hero-eyebrow {
  color: var(--brand-500);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.about-stats-section {
  padding-block: var(--space-16);
}
.stats-premium-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.stat-premium-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-normal), box-shadow var(--duration-normal);
}
.stat-premium-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.about-features-section {
  padding-block: var(--space-24);
  background: var(--bg-surface);
  border-block: 1px solid var(--border-subtle);
}
.feature-premium-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-12);
}
.feature-premium-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-md);
}
.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.about-curation-section {
  padding-block: var(--space-24);
}
.curation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.curation-list {
  list-style: none;
  padding: 0;
  margin: var(--space-8) 0 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.curation-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  font-size: var(--text-md);
  color: var(--text-secondary);
  line-height: 1.5;
}
.curation-list-icon {
  width: 24px;
  height: 24px;
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.visual-placeholder {
  background: var(--bg-surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-2xl);
  height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8);
}

.about-cta-section {
  padding-block: var(--space-16) var(--space-24);
}
.cta-premium-box {
  background: linear-gradient(135deg, var(--bg-surface), var(--bg-raised));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-3xl);
  padding: var(--space-16);
  text-align: center;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
}
.cta-premium-content h2 {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}
.cta-premium-content p {
  font-size: var(--text-xl);
  color: var(--text-secondary);
}
.cta-premium-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
}

@media (max-width: 992px) {
  .stats-premium-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-premium-grid { grid-template-columns: 1fr; }
  .curation-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .stats-premium-grid { grid-template-columns: 1fr; }
  .cta-premium-actions { flex-direction: column; width: 100%; }
}

/* ════════════════════════════════════════════════════════════
   PREMIUM SIDEBAR CARD
   ════════════════════════════════════════════════════════════ */
.premium-sidebar-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.sidebar-license-selector {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.license-radio-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--duration-fast);
  background: var(--bg-surface);
}
.license-radio-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 0 0 1px var(--border-strong);
}
.license-radio-card.active {
  border-color: var(--brand-500);
  background: rgba(59, 130, 246, 0.04);
  box-shadow: 0 0 0 1px var(--brand-500);
}
.license-radio-card input[type="radio"] {
  margin-top: 4px;
  accent-color: var(--brand-500);
  transform: scale(1.1);
}
.license-radio-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.license-radio-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.license-title {
  font-weight: 700;
  color: var(--text-primary);
  font-size: var(--text-md);
}
.license-price {
  font-weight: 800;
  color: var(--text-primary);
  font-size: var(--text-md);
}
.license-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.sidebar-price-block {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.price-main {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: -0.02em;
}
.price-strikethrough {
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--text-tertiary);
  text-decoration: line-through;
}
.price-badge {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.btn-buy-gumroad {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
  color: white;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-lg);
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
  transition: transform var(--duration-fast), box-shadow var(--duration-fast);
}
.btn-buy-gumroad:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}
.btn-live-demo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  font-size: var(--text-md);
  font-weight: 600;
  border: 1px solid var(--border-default);
  cursor: pointer;
  transition: all var(--duration-fast);
}
.btn-live-demo:hover {
  background: var(--bg-raised);
  border-color: var(--border-strong);
}

.sticky-sidebar-element {
  position: sticky;
  top: calc(100px + var(--space-6));
}

.sidebar-details-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
}

.details-link {
  color: var(--brand-500);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--duration-fast);
}
.details-link:hover {
  color: var(--brand-600);
  text-decoration: underline;
}

.sidebar-guarantee {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-raised);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.product-details-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 100px;
}
.details-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: var(--space-3);
}
.details-table {
  display: flex;
  flex-direction: column;
}
.details-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: var(--space-3);
  border-bottom: 1px dashed var(--border-subtle);
}
.details-row:last-child {
  border-bottom: none;
}
.details-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-secondary);
  font-size: var(--text-sm);
}
.details-label .icon {
  color: var(--text-tertiary);
}
.details-val {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--text-sm);
}

/* ════════════════════════════════════════════════════════════
   CONTACT PAGE
   ════════════════════════════════════════════════════════════ */
.contact-hero {
  background: radial-gradient(circle at 50% 0%, var(--bg-raised), var(--bg-base));
  border-bottom: 1px solid var(--border-subtle);
  padding-block: var(--space-20) var(--space-12);
}
.contact-content {
  padding-block: var(--space-16);
}
.contact-premium-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: var(--space-12);
  align-items: start;
}
.contact-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.contact-premium-card {
  padding: var(--space-8);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
}
.contact-card-title {
  font-size: var(--text-xl);
  font-weight: 700;
}
.contact-form-premium-wrap {
  background: var(--bg-surface);
  padding: var(--space-10);
  border-radius: var(--radius-3xl);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
}
.contact-premium-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}
.contact-premium-form .form-group {
  margin-bottom: var(--space-6);
}
.contact-premium-form label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}
.contact-premium-form .form-control {
  width: 100%;
  padding: var(--space-4);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--text-md);
  transition: all var(--duration-fast);
}
.contact-premium-form .form-control:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

@media (max-width: 992px) {
  .contact-premium-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .related-grid { grid-template-columns: 1fr; }
  .tabs-nav { gap: 1px; }
  .tab-btn  { padding: 8px 12px; font-size: var(--text-xs); }
}