/* ==========================================================================
   PRODUCT MODAL - CLEANED AND REORGANIZED
   ========================================================================== */

/* ==========================================================================
   1. CSS CUSTOM PROPERTIES
   ========================================================================== */

:root {
  /* Spacing System */
  --pm-space-xs: 4px;
  --pm-space-sm: 8px;
  --pm-space-md: 12px;
  --pm-space-lg: 16px;
  --pm-space-xl: 24px;
  --pm-space-xxl: 32px;
  
  /* Colors */
  --pm-bg-primary: #111315;
  --pm-bg-secondary: #1c2023;
  --pm-bg-tertiary: #1a2126;
  --pm-bg-card: #141a1e;
  --pm-bg-hover: #1d262b;
  --pm-bg-active: #2e3941;
  
  --pm-border-primary: #2d363d;
  --pm-border-secondary: #253037;
  --pm-border-active: #31424d;
  
  --pm-text-primary: #e3e7ea;
  --pm-text-secondary: #d9e4ea;
  --pm-text-tertiary: #c5d2d9;
  --pm-text-muted: #8c97a0;
  
  --pm-accent-primary: #4a9eff;
  --pm-accent-orange: #ff9800;
  --pm-accent-green: #4dff9d;
  
  /* Typography */
  --pm-font-xs: 10px;
  --pm-font-sm: 12px;
  --pm-font-base: 14px;
  --pm-font-md: 16px;
  --pm-font-lg: 18px;
  --pm-font-xl: 24px;
  
  /* Border Radius */
  --pm-radius-sm: 6px;
  --pm-radius-md: 10px;
  --pm-radius-lg: 14px;
  --pm-radius-xl: 18px;
  --pm-radius-pill: 999px;
  
  /* Transitions */
  --pm-transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --pm-transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --pm-transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadows */
  --pm-shadow-sm: 0 2px 4px rgba(0,0,0,0.35);
  --pm-shadow-md: 0 2px 6px rgba(0,0,0,0.45);
  --pm-shadow-lg: 0 4px 18px rgba(0,0,0,0.5);
  
  /* Mobile */
  --pm-mobile-padding: 8px;
  --pm-mobile-gap: 12px;
  --pm-touch-target: 44px;
}

/* Reduce motion preferences */
@media (prefers-reduced-motion: reduce) {
  :root {
    --pm-transition-fast: 0.01s;
    --pm-transition-base: 0.01s;
    --pm-transition-slow: 0.01s;
  }
  
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: -1ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   2. MODAL BASE LAYOUT
   ========================================================================== */

/* Body scroll lock */
html.modal-open, 
body.modal-open { 
  overflow: hidden; 
  overscroll-behavior: contain; 
}

/* Modal overlay */
#productModal.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: stretch;
  justify-content: center;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(2px);
  z-index: 10000;
  overflow-y: auto;
  overscroll-behavior: contain;
  will-change: transform, opacity;
  contain: layout style paint;
}

#productModal.modal.hidden { 
  display: none; 
}

/* Modal content */
#productModal .modal-content {
  position: relative;
  width: min(100%, 980px);
  max-height: 100vh;
  overflow: visible;
  display: flex;
  flex-direction: column;
  background: var(--panel, #1c2023);
  border: 1px solid var(--border, #2d363d);
  border-radius: var(--pm-radius-lg);
  color: var(--fg, #e3e7ea);
  box-shadow: var(--pm-shadow-lg);
  will-change: transform;
  contain: layout style;
  backface-visibility: hidden;
  transform: translateZ(0);
  padding: 16px 20px 18px;
}

/* Modal body */
#productModal .modal-body {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  padding: 12px 12px 100px;
  position: relative;
}

/* Close button */
#productModal .modal-close {
  position: sticky;
  top: 10px;
  align-self: flex-end;
  z-index: 5;
  margin: 10px;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #232a30;
  border: 1px solid #32404a;
  color: #d0d6db;
  font-weight: 700;
  font-size: 18px;
  cursor: pointer;
  transition: background var(--pm-transition-fast);
}

#productModal .modal-close:hover { 
  background: #2a333a; 
}

/* ==========================================================================
   3. PRODUCT HEADER GRID
   ========================================================================== */

.pm-layout-grid {
  width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.pm-grid {
  display: grid;
  grid-template-columns: 35% 65%;
  gap: 16px;
  padding: 16px;
  background: var(--panel, #1c2023);
  border-radius: 12px;
  border: 1px solid var(--border, #2d363d);
  align-items: start;
  min-height: 320px;
  position: relative;
  overflow: hidden;
}

.pm-grid::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 14% 18%, rgba(74,158,255,0.12), transparent 62%);
  pointer-events: none;
}

.pm-grid-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.pm-grid-right {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  padding-left: 4px;
}

/* ==========================================================================
   4. PRODUCT IMAGE
   ========================================================================== */

.pm-image-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4/5;
  max-width: 320px;
  background: #ffffff;
  border: 1px solid var(--border, #2d363d);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--pm-transition-base), box-shadow var(--pm-transition-base);
  overflow: hidden;
  box-sizing: border-box;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.pm-image-frame:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.45);
  border-color: var(--accent, #4a9eff);
}

.pm-image-inner {
  width: 100%;
  height: 100%;
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: var(--pm-radius-md);
  overflow: hidden;
  box-sizing: border-box;
  min-height: 200px;
}

.pm-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: opacity 0.2s ease;
  display: block;
}

/* ==========================================================================
   5. PRODUCT VARIANTS
   ========================================================================== */

.pm-variants {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
  margin-top: 4px;
  justify-items: start;
  justify-content: flex-start;
  max-height: 280px;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--pm-accent-primary) rgba(255, 255, 255, 0.1);
}

.pm-variants::-webkit-scrollbar {
  width: 6px;
}

.pm-variants::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.pm-variants::-webkit-scrollbar-thumb {
  background: var(--pm-accent-primary);
  border-radius: 3px;
}

.pm-variant-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px 6px;
  background: var(--pm-bg-secondary);
  border: 2px solid var(--pm-border-primary);
  border-radius: var(--pm-radius-md);
  font-size: var(--pm-font-sm);
  font-weight: 500;
  color: var(--pm-text-secondary);
  cursor: pointer;
  transition: transform var(--pm-transition-fast), border-color var(--pm-transition-fast), box-shadow var(--pm-transition-fast);
  min-height: 100px;
  text-align: center;
  box-shadow: var(--pm-shadow-sm);
  will-change: transform, border-color, box-shadow;
  backface-visibility: hidden;
}

.pm-variant-option:hover {
  background: var(--pm-bg-tertiary);
  border-color: rgba(74, 158, 255, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2), 0 0 12px rgba(74, 158, 255, 0.1);
}

.pm-variant-option.selected {
  background: rgba(74, 158, 255, 0.15);
  border: 3px solid var(--pm-accent-primary);
  color: var(--pm-accent-primary);
  box-shadow: 0 0 20px rgba(74, 158, 255, 0.4), 0 4px 16px rgba(0, 0, 0, 0.2);
  transform: translateY(-2px) scale(1.02);
}

.pm-variant-image {
  width: 48px;
  height: 48px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.pm-variant-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
  width: 100%;
}

.pm-variant-label {
  font-weight: 600;
  line-height: 1.2;
  font-size: 11px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.pm-variant-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  text-align: center;
}

.pm-variant-price {
  font-size: 13px;
  color: var(--pm-text-muted);
  line-height: 1.2;
  font-weight: 600;
}

.pm-variant-option.selected .pm-variant-price {
  color: var(--pm-accent-primary);
  opacity: 0.8;
}

.pm-variant-type-icon {
  display: none !important;
}

/* ==========================================================================
   6. TYPOGRAPHY & CONTENT
   ========================================================================== */

/* Breadcrumbs */
.pm-breadcrumbs {
  font-size: var(--pm-font-sm);
  color: #bbb;
  margin-bottom: 4px;
  letter-spacing: 0.2px;
}

.pm-breadcrumbs a {
  color: #bbb;
  text-decoration: none;
  transition: color var(--pm-transition-fast);
}

.pm-breadcrumbs a:hover {
  color: var(--pm-accent-primary);
}

.pm-breadcrumbs .separator {
  margin: 0 8px;
  opacity: 0.6;
}

/* Brand chip */
.pm-brand-chip {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 10;
  background: rgba(0, 0, 0, 0.85);
  color: var(--pm-text-primary);
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  backdrop-filter: blur(6px);
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.4);
}

/* Product title */
.product-title,
.product-title-xl {
  background: linear-gradient(135deg, var(--accent, #4a9eff), #6db4ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
  margin: 0;
  line-height: 1.2;
  margin-bottom: 4px;
  text-align: left;
}

.product-title-xl {
  font-size: clamp(26px, 2.5vw, 36px);
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

/* Product description */
.product-description {
  color: #aaa;
  line-height: 1.5;
  max-width: 65ch;
  margin-bottom: 6px;
  font-size: 15px;
}

.product-description--clamp {
  overflow: hidden;
  position: relative;
  transition: max-height var(--pm-transition-base);
}

.pm-desc-toggle {
  background: #12181c;
  border: 1px solid var(--pm-border-primary);
  color: var(--pm-text-primary);
  padding: 6px 12px;
  border-radius: var(--pm-radius-pill);
  font-size: var(--pm-font-sm);
  font-weight: 600;
  cursor: pointer;
  margin-top: var(--pm-space-xs);
  transition: all var(--pm-transition-fast);
}

.pm-desc-toggle:hover {
  background: var(--pm-accent-primary);
  border-color: var(--pm-accent-primary);
  color: #091217;
  text-decoration: none;
}

/* Rating section */
.product-rating-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  margin: 4px 0 8px 0;
}

.rating-stars {
  color: #ffd700;
  font-size: 1.1rem;
  letter-spacing: 1px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  order: 1;
}

.rating-count {
  color: #888;
  font-weight: 500;
  font-size: 0.85rem;
  order: 2;
}

.rating-value {
  color: var(--pm-text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  order: 3;
}

/* ==========================================================================
   7. TAGS & CHIPS
   ========================================================================== */

.pm-inline-tags {
  margin-top: 2px;
  display: block;
  margin-bottom: 8px;
  text-align: center;
}

.pm-tag-row {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  justify-content: flex-start;
  max-width: 100%;
}

#productModal .tag-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--pm-text-secondary);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18);
  transition: background var(--pm-transition-fast), border-color var(--pm-transition-fast), transform var(--pm-transition-fast), box-shadow var(--pm-transition-fast);
  white-space: nowrap;
  user-select: none;
}

#productModal .tag-chip:hover {
  background: rgba(74, 158, 255, 0.18);
  border-color: rgba(74, 158, 255, 0.45);
  color: var(--pm-text-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

#productModal .tag-chip:focus-visible {
  outline: 2px solid var(--pm-accent-primary);
  outline-offset: 2px;
}

#productModal .tag-chip.compatibility,
#productModal .tag-chip[data-chip-type="compatibility"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  margin-right: 5px;
  margin-bottom: 5px;
  letter-spacing: 0.25px;
  background: var(--accent-surface);
  border: 1px solid var(--accent);
  color: #fff;
  box-shadow: none;
}

#productModal .tag-chip.compatibility:hover,
#productModal .tag-chip[data-chip-type="compatibility"]:hover {
  background: var(--accent-surface-hover);
  border-color: var(--accent);
  color: #fff;
  transform: none;
  box-shadow: none;
}

/* ==========================================================================
   8. PRICING SECTION
   ========================================================================== */

.pm-price-cta-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 10px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  flex-wrap: wrap;
  min-height: 60px;
}

.pm-price-section {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
  min-width: 180px;
}

.pm-price-inline {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.pm-price-current {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--pm-accent-primary);
  letter-spacing: -0.8px;
  text-shadow: 0 1px 3px rgba(74, 158, 255, 0.3);
  line-height: 1;
}

.pm-price-per-unit {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--pm-text-muted);
  letter-spacing: 0;
  text-shadow: none;
  opacity: 0.8;
}

.pm-price-list {
  text-decoration: line-through;
  opacity: 0.6;
  font-size: 1.1rem;
  color: var(--pm-text-tertiary);
  font-weight: 500;
}

.pm-price-discount {
  background: rgba(76, 175, 80, 0.2);
  color: var(--pm-accent-green);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  border: 1px solid rgba(76, 175, 80, 0.4);
  box-shadow: 0 2px 6px rgba(76, 175, 80, 0.2);
}


.pm-price-inline-cta {
  margin-top: 12px;
  width: 100%;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.pm-price-inline-cta .pm-amazon-button {
  width: 100%;
}

@media (min-width: 769px) {
  .pm-price-inline-cta {
    justify-content: flex-end;
    margin-top: 0;
  }

  .pm-price-inline-cta .pm-amazon-button {
    width: auto;
    min-width: 180px;
  }
}

/* Amazon button */
.pm-amazon-button {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  min-width: 160px;
  padding: 10px 18px;
  background: linear-gradient(180deg, #FFD772, #F7B700);
  color: #222 !important;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.4px;
  border: 1px solid #d6a318;
  border-radius: 10px;
  text-decoration: none !important;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25), inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  transition: background var(--pm-transition-base), transform var(--pm-transition-base), box-shadow var(--pm-transition-base);
  text-shadow: none;
  cursor: pointer;
  position: relative;
}

.pm-amazon-button:hover {
  background: linear-gradient(180deg, #FFE07F, #F9BF05);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.5);
  transform: translateY(-1px);
}

.pm-amazon-button:active {
  transform: translateY(1px);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.pm-amazon-button:focus-visible {
  outline: 2px solid #111;
  outline-offset: 3px;
  box-shadow: 0 0 0 3px rgba(255, 209, 80, 0.8);
}

.pm-amazon-button::after {
  content: '→';
  font-size: 14px;
  opacity: 0.85;
  transition: transform var(--pm-transition-fast);
}

.pm-amazon-button:hover::after {
  transform: translateX(2px);
}

/* Enhanced Price Section Components */
.pm-price-section--enhanced {
  gap: 8px;
}

/* Deal Badge */
.pm-deal-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #ff6b6b, #ff8787);
  color: white;
  padding: 6px 12px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.8rem;
  margin-top: 6px;
  box-shadow: 0 2px 8px rgba(255, 107, 107, 0.35);
  animation: dealPulse 2s ease-in-out infinite;
  align-self: flex-start;
  letter-spacing: 0.3px;
}

@keyframes dealPulse {
  0%, 100% {
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.35);
  }
  50% {
    box-shadow: 0 2px 12px rgba(255, 107, 107, 0.5);
  }
}

.pm-deal-badge .ri-fire-fill {
  font-size: 1rem;
  animation: fireFlicker 1.5s ease-in-out infinite;
}

@keyframes fireFlicker {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.pm-deal-text {
  font-weight: 700;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.pm-deal-score {
  background: rgba(255, 255, 255, 0.25);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Price Trend Indicator */
.pm-price-trend {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  margin-top: 4px;
  padding: 6px 10px;
  border-radius: 6px;
  font-weight: 600;
  align-self: flex-start;
}

.pm-price-trend--down {
  background: rgba(76, 175, 80, 0.15);
  color: #4caf50;
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.pm-price-trend--up {
  background: rgba(244, 67, 54, 0.15);
  color: #f44336;
  border: 1px solid rgba(244, 67, 54, 0.3);
}

.pm-price-trend i {
  font-size: 1rem;
}

/* Price Metrics Container */
.pm-price-metrics {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* Rating Compact */
.pm-rating-compact {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
}

.pm-stars {
  color: #ffc107;
  display: flex;
  gap: 2px;
  font-size: 0.9rem;
}

.pm-rating-value {
  font-weight: 700;
  color: var(--pm-text-primary);
}

.pm-rating-count {
  color: var(--pm-text-muted);
  font-size: 0.8rem;
}

/* Sales Rank */
.pm-sales-rank {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--pm-text-secondary);
  font-weight: 500;
}

.pm-sales-rank i {
  color: #ffc107;
  font-size: 0.9rem;
}

/* Stock Status */
.pm-stock-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
}

.pm-stock-status i {
  font-size: 1rem;
}

.pm-stock--available {
  color: #4caf50;
}

.pm-stock--unavailable {
  color: #f44336;
}

.pm-prime-badge-inline {
  background: #00a8e1;
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-left: 4px;
}

/* Price Stats */
.pm-price-stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--pm-text-muted);
  font-weight: 500;
}

.pm-price-stat i {
  color: var(--pm-accent-primary);
  font-size: 0.9rem;
}

.pm-price-stat--good {
  color: #4caf50;
}

.pm-price-stat--good i {
  color: #4caf50;
}

/* Responsive adjustments for enhanced price section */
@media (max-width: 768px) {
  .pm-deal-badge {
    font-size: 0.75rem;
    padding: 5px 10px;
  }
  
  .pm-price-metrics {
    gap: 6px;
  }
  
  .pm-rating-compact,
  .pm-sales-rank,
  .pm-stock-status,
  .pm-price-stat {
    font-size: 0.75rem;
  }
}

/* ==========================================================================
   9. TAB SYSTEM
   ========================================================================== */

.pm-tabs {
  background: linear-gradient(155deg, var(--pm-bg-secondary), var(--pm-bg-primary));
  border: 1px solid var(--pm-border-primary);
  border-radius: var(--pm-radius-xl);
  padding: 0;
  box-shadow: var(--pm-shadow-lg);
  position: relative;
  overflow: hidden;
}

.pm-tabs::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(74,158,255,0.08), transparent 70%);
  pointer-events: none;
  border-radius: inherit;
}

.pm-tablist {
  display: flex;
  gap: var(--pm-space-sm);
  margin: 0;
  flex-wrap: wrap;
  padding: var(--pm-space-md) var(--pm-space-lg) var(--pm-space-sm);
  position: relative;
  list-style: none;
  align-items: center;
  background: rgba(255,255,255,0.02);
  border-bottom: 2px solid var(--pm-accent-primary);
  border-top-left-radius: var(--pm-radius-xl);
  border-top-right-radius: var(--pm-radius-xl);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.pm-tab {
  background: transparent;
  color: var(--pm-text-tertiary);
  border: 1px solid transparent;
  padding: 10px 16px;
  cursor: pointer;
  font: 700 14px/1.2 system-ui, sans-serif;
  border-radius: var(--pm-radius-lg) var(--pm-radius-lg) 0 0;
  position: relative;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.pm-tab:hover {
  background: rgba(255,255,255,0.06);
  color: var(--pm-text-secondary);
  transform: translateY(-1px);
}

.pm-tab.is-active {
  background: var(--pm-accent-primary);
  color: #061018;
  font-weight: 900;
  border-top: 2px solid var(--pm-accent-primary);
  box-shadow: 0 2px 8px rgba(74,158,255,0.35);
}

.pm-tab:focus-visible {
  outline: 2px solid var(--pm-accent-primary);
  outline-offset: 3px;
}

.pm-tab-text { 
  letter-spacing: .25px; 
  font-size: 14px; 
}

.pm-tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 8px;
  margin-left: 6px;
  border-radius: var(--pm-radius-pill);
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
  color: #0a0a0a;
  background: rgba(255,255,255,0.92);
  box-shadow: 0 1px 2px rgba(0,0,0,0.25), 0 0 0 1px rgba(0,0,0,0.18) inset;
  transition: transform .15s ease, background .15s ease;
}

.pm-tab:hover .pm-tab-badge { 
  transform: translateY(-1px); 
}

.pm-tab.is-active .pm-tab-badge {
  background: rgba(0,0,0,0.28);
  color: #fff;
}

/* Tab panels */
.pm-tabpanel {
  animation: pmFadeIn 0.2s ease;
  padding: 16px 24px;
  background: var(--pm-bg-primary);
  border-bottom-left-radius: var(--pm-radius-xl);
  border-bottom-right-radius: var(--pm-radius-xl);
  box-sizing: border-box;
  overflow: hidden;
}

.pm-tabpanel[hidden] {
  display: none !important;
}

@keyframes pmFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   10. CARDS & SECTIONS
   ========================================================================== */

.pm-section-stack {
  background: var(--pm-bg-primary);
  border: 1px solid var(--pm-border-primary);
  border-radius: var(--pm-radius-xl);
  padding: 16px 24px;
  box-shadow: var(--pm-shadow-lg);
  box-sizing: border-box;
  overflow: hidden;
}

.pm-card {
  position: relative;
  border-radius: 12px;
  animation: zrFade .35s ease;
  background: var(--panel, rgba(255,255,255,0.05));
  border: 1px solid var(--border, rgba(255,255,255,0.1));
  backdrop-filter: blur(10px);
  padding: 18px 22px;
  box-shadow: var(--pm-shadow-sm);
  box-sizing: border-box;
  max-width: 100%;
}

.pm-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(74,158,255,0.08), transparent 70%);
  pointer-events: none;
  border-radius: inherit;
}

.pm-card + .pm-card {
  margin-top: var(--pm-space-lg);
}

.pm-section-title {
  margin: 0 0 var(--pm-space-lg);
  font-size: 16px;
  letter-spacing: 0.25px;
  font-weight: 700;
  color: var(--pm-text-primary);
  display: flex;
  align-items: center;
  gap: var(--pm-space-sm);
}

.pm-section-title::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--pm-accent-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

/* Technical specifications grid */
.pm-specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  width: 100%;
  margin: 0;
  padding: 4px 0 0;
  box-sizing: border-box;
}

.pm-spec-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: linear-gradient(140deg, rgba(28, 32, 35, 0.92), rgba(33, 41, 47, 0.88));
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--pm-radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.28);
  transition: transform var(--pm-transition-fast), border-color var(--pm-transition-fast), box-shadow var(--pm-transition-fast);
  min-height: 112px;
}

.pm-spec-item::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(circle at 14% 18%, rgba(74, 158, 255, 0.14), transparent 65%);
  opacity: 0;
  transition: opacity var(--pm-transition-fast);
}

.pm-spec-item:hover {
  transform: translateY(-2px);
  border-color: rgba(74, 158, 255, 0.45);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.32);
}

.pm-spec-item:hover::after {
  opacity: 1;
}

.pm-spec-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.45px;
  text-transform: uppercase;
  color: rgba(219, 230, 238, 0.76);
}

.pm-spec-value {
  font-size: 14px;
  line-height: 1.45;
  color: var(--pm-text-secondary);
  word-break: break-word;
}

.pm-spec-value strong {
  color: var(--pm-text-primary);
}

.pm-no-specs {
  padding: 14px 16px;
  border-radius: var(--pm-radius-md);
  border: 1px dashed rgba(255, 255, 255, 0.14);
  background: rgba(15, 20, 24, 0.65);
  color: var(--pm-text-muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 640px) {
  .pm-spec-item {
    padding: 12px 14px;
    gap: 4px;
  }

  .pm-spec-value {
    font-size: 13px;
  }
}

/* ==========================================================================
   11. MOBILE STICKY BUY BAR
   ========================================================================== */

.pm-sticky-buybar { 
  display: none; 
}

/* Price history card */
.pm-card--fullwidth-chart {
  padding: 0;
  overflow: hidden;
  border-radius: var(--pm-radius-xl);
}

.pm-card--fullwidth-chart .price-chart-container {
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: linear-gradient(145deg, rgba(20, 26, 30, 0.94), rgba(16, 20, 24, 0.92));
  border-radius: inherit;
  border: 1px solid rgba(74, 158, 255, 0.12);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.38);
  overflow: hidden;
  min-height: 320px;
  padding: 0;
}

.pm-card--fullwidth-chart .range-selector {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  background: rgba(12, 16, 20, 0.78);
  border: 1px solid rgba(74, 158, 255, 0.24);
  border-radius: var(--pm-radius-pill);
}

.pm-card--fullwidth-chart .range-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--pm-text-secondary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  padding: 6px 10px;
  border-radius: var(--pm-radius-pill);
  cursor: pointer;
  transition: background var(--pm-transition-fast), color var(--pm-transition-fast), transform var(--pm-transition-fast);
}

.pm-card--fullwidth-chart .range-btn[aria-pressed="true"],
.pm-card--fullwidth-chart .range-btn:hover {
  background: rgba(74, 158, 255, 0.26);
  color: var(--pm-text-primary);
  transform: translateY(-1px);
}

.pm-card--fullwidth-chart .range-btn:focus-visible {
  outline: 2px solid var(--pm-accent-primary);
  outline-offset: 2px;
}

.pm-card--fullwidth-chart .price-chart-canvas-wrapper {
  position: relative;
  width: 100%;
  min-height: 240px;
  border-radius: var(--pm-radius-lg);
  border: 1px solid rgba(74, 158, 255, 0.18);
  background: linear-gradient(180deg, rgba(14, 22, 28, 0.92), rgba(12, 18, 22, 0.92));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04), 0 8px 22px rgba(0, 0, 0, 0.35);
  padding: 16px 18px 12px;
}

.pm-card--fullwidth-chart .price-chart-canvas {
  width: 100% !important;
  height: 220px !important;
  display: block;
}

.pm-card--fullwidth-chart .price-tooltip {
  position: absolute;
  background: rgba(15, 21, 26, 0.96);
  border: 1px solid rgba(74, 158, 255, 0.45);
  color: var(--pm-text-primary);
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 12px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.45);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--pm-transition-fast), transform var(--pm-transition-fast);
  transform: translate3d(-50%, -12px, 0);
  z-index: 15;
}

.pm-card--fullwidth-chart .price-tooltip.is-visible {
  opacity: 1;
  transform: translate3d(-50%, -16px, 0);
}

.pm-card--fullwidth-chart .price-tooltip__date {
  display: block;
  font-size: 11px;
  color: var(--pm-text-muted);
  margin-top: 2px;
}

@media (max-width: 1024px) {
  .pm-card--fullwidth-chart .price-chart-main {
    padding: 18px 18px 20px;
  }
}

@media (max-width: 640px) {
  .pm-card--fullwidth-chart .range-selector {
    width: 100%;
    justify-content: space-between;
  }

  .pm-card--fullwidth-chart .price-chart-toolbar {
    gap: 10px;
    align-items: flex-start;
  }

  .pm-card--fullwidth-chart .price-chart-canvas {
    height: 200px !important;
  }
}

@media (max-width: 768px) {
  .pm-sticky-buybar {
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    z-index: 10002;
    padding: 10px 12px;
    background: linear-gradient(180deg, rgba(20, 26, 30, 0.85), rgba(20, 26, 30, 0.95));
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 12px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
    box-shadow: 0 10px 28px rgba(0,0,0,.35), 0 0 0 1px rgba(255,255,255,.05) inset;
  }
  
  .pm-buybar-price { 
    display: flex; 
    align-items: baseline; 
    gap: 8px; 
    min-width: 0; 
  }
  
  .pm-buybar-current { 
    font-size: 18px; 
    font-weight: 800; 
    color: var(--accent, #4a9eff); 
    text-shadow: 0 1px 2px rgba(0,0,0,0.25);
  }
  
  .pm-buybar-per { 
    font-size: 11px; 
    color: var(--muted, #8c97a0); 
    font-weight: 500; 
  }
  
  .pm-buybar-list { 
    font-size: 12px; 
    color: var(--muted, #8c97a0); 
    text-decoration: line-through; 
    opacity: 0.8; 
  }
  
  .pm-buybar-cta { 
    display: inline-flex; 
    align-items: center; 
    justify-content: center; 
    padding: 12px 16px; 
    border-radius: 999px; 
    background: linear-gradient(135deg, var(--accent, #4a9eff), #6db4ff); 
    color: #fff; 
    text-decoration: none; 
    font-weight: 800; 
    min-width: 160px; 
    box-shadow: 0 8px 24px rgba(74,158,255,.35); 
    border: 1px solid rgba(255,255,255,.25);
  }
  
  .pm-buybar-cta:active { 
    transform: translateY(1px); 
  }
}

/* ==========================================================================
   12. RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet breakpoint */
@media (max-width: 768px) {
  #productModal .modal-content {
    width: 100%;
    height: 100%;
    max-height: none;
    border-radius: 0;
    -webkit-overflow-scrolling: touch;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    padding: 6px 8px 6px;
  }
  
  #productModal .modal-body { 
    padding: 0 4px calc(70px + env(safe-area-inset-bottom, 0px)) !important;
    position: relative !important;
  }

  .pm-grid {
    grid-template-columns: 1fr !important;
    gap: 2px !important;
    padding: 2px 4px 2px !important;
    min-height: auto !important;
    background: transparent !important;
    border: none !important;
  }

  .pm-grid-left {
    order: 1;
    margin-bottom: 4px;
    width: 100% !important;
    max-width: 100% !important;
    display: flex !important;
    justify-content: flex-start !important;
    align-items: flex-start !important;
    padding-top: 0 !important;
  }

  .pm-grid-right { 
    order: 2;
    padding-left: 0; 
    padding: 2px !important;
    width: 100% !important;
  }

  .pm-image-frame {
    max-width: min(260px, 75vw) !important;
    width: min(260px, 75vw) !important;
    height: min(260px, 75vw) !important;
    aspect-ratio: 1 !important;
    border-radius: 6px;
    padding: 0 !important;
    margin: 0 auto 2px !important;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    border-width: 1px !important;
    flex-shrink: 0 !important;
  }

  .pm-image-inner {
    border-radius: 4px;
    min-height: unset; 
    width: 100%;
    height: 100%;
    padding: 0;
  }

  .pm-image {
    width: 98% !important;
    height: 98% !important;
    margin: 1% auto;
  }

  /* Mobile variants - horizontal scrolling */
  .pm-variants {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    gap: 8px;
    padding: 4px 8px 6px 6px !important;
    margin-left: 0 !important;
    scroll-padding-left: 6px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    margin-top: 6px;
    grid-template-columns: none !important;
    max-height: none !important;
    justify-content: flex-start !important;
    align-items: flex-start !important;
    scrollbar-width: none;
    -ms-overflow-style: none;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .pm-variants::-webkit-scrollbar {
    display: none;
  }

  .pm-variant-option {
    flex: 0 0 auto !important;
    min-width: 80px !important;
    max-width: 90px;
    width: 85px !important;
    min-height: 80px;
    padding: 6px 4px;
    scroll-snap-align: start;
    font-size: 10px;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    white-space: nowrap;
  }

  .pm-variant-image {
    width: 32px;
    height: 32px;
    border-radius: 4px;
  }

  .pm-variant-label {
    font-size: 9px;
    line-height: 1.1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 100%;
    max-width: 75px;
    display: block;
  }

  .pm-variant-price {
    font-size: 8px;
    line-height: 1.1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 75px;
  }

  /* Typography adjustments */
  .product-title-xl {
    font-size: 16px !important;
    margin: 4px 0 !important;
    line-height: 1.2 !important;
  }

  .pm-breadcrumbs {
    font-size: 11px !important;
    margin-bottom: 2px !important;
  }

  .pm-brand-chip {
    font-size: 10px !important;
    padding: 2px 6px !important;
    margin: 2px 0 !important;
  }

  /* Compact tags */
  #productModal .tag-chip {
    font-size: 9px;
    padding: 2px 6px;
    margin-right: 4px;
    margin-bottom: 4px;
  }

  /* Tab optimization - horizontal scroll */
  .pm-tablist {
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    padding: 8px 12px 6px !important;
    gap: 6px !important;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
  }

  .pm-tablist::-webkit-scrollbar {
    display: none;
  }

  .pm-tab {
    flex: 0 0 auto !important;
    min-width: fit-content !important;
    padding: 8px 12px !important;
    font-size: 16px !important;
    border-radius: 8px !important;
    scroll-snap-align: start;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

  .pm-tab-text {
    font-size: 16px !important;
    white-space: nowrap;
  }

  .pm-tab-badge {
    font-size: 10px !important;
    padding: 2px 6px !important;
    margin-left: 4px !important;
  }

  /* Price section adjustments */
  .pm-price-cta-container {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    text-align: center;
    padding: 10px 12px;
    margin-top: 8px;
  }

  .pm-price-section {
    align-items: center;
  }

  .pm-price-inline-cta {
    justify-content: center;
  }

  .pm-amazon-button {
    justify-content: center;
    width: 100%;
    max-width: 280px;
    padding: 14px 28px;
  }

  /* Close button */
  #productModal .modal-close {
    position: sticky;
    top: 8px;
    margin: 8px;
  }
}

/* Small mobile breakpoint */
@media (max-width: 480px) {
  .pm-grid {
    padding: 2px !important;
    gap: 2px !important;
  }

  .pm-image-frame {
    max-width: min(200px, 60vw) !important;
    width: min(200px, 60vw) !important;
    height: min(200px, 60vw) !important;
    padding: 1px !important;
    border-width: 1px !important;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1) !important;
  }

  .pm-image-inner {
    padding: 1px !important;
  }

  .pm-image {
    width: 99% !important;
    height: 99% !important;
    margin: 0.5% auto !important;
  }

  .product-title-xl {
    font-size: 14px !important;
    margin: 2px 0 !important;
  }

  .product-description {
    font-size: 11px !important;
    line-height: 1.3 !important;
    margin: 2px 0 !important;
  }

  #productModal .modal-body { 
    padding: 1px 1px 2px !important;
  }

  .pm-variant-option {
    min-width: 70px !important;
    max-width: 80px;
    font-size: 9px;
    padding: 4px 3px;
    min-height: 70px;
    gap: 3px;
  }

  .pm-variant-image {
    width: 28px !important;
    height: 28px !important;
  }

  .pm-variant-label {
    font-size: 8px;
  }

  .pm-variant-price {
    font-size: 7px;
  }
}

/* Extra small mobile */
@media (max-width: 320px) {
  .pm-image-frame {
    max-width: min(180px, 55vw) !important;
    width: min(180px, 55vw) !important;
    height: min(180px, 55vw) !important;
  }

  .pm-variant-option {
    min-width: 60px !important;
    max-width: 65px !important;
    width: 63px !important;
    min-height: 60px !important;
  }

  .product-title-xl {
    font-size: 13px !important;
    line-height: 1.2 !important;
  }
}

/* ==========================================================================
   13. ANIMATIONS & KEYFRAMES
   ========================================================================== */

@keyframes zrFade { 
  from { 
    opacity: 0; 
    transform: translateY(8px);
  } 
  to { 
    opacity: 1; 
    transform: translateY(0);
  } 
}

/* ==========================================================================
   14. UTILITY CLASSES
   ========================================================================== */

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ==========================================================================
   15. PERFORMANCE OPTIMIZATIONS
   ========================================================================== */

/* Hardware acceleration for key interactive elements */
.pm-image-frame,
.pm-variant-option,
.pm-amazon-button,
.pm-tab,
#productModal .tag-chip,
.pm-modal-content,
.pm-sticky-buybar {
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

/* Touch device optimizations */
@media (pointer: coarse) {
  button,
  .pm-amazon-button,
  .pm-variant-option,
  .pm-tab {
    min-height: var(--pm-touch-target);
    min-width: var(--pm-touch-target);
  }

  #productModal .tag-chip {
    min-height: auto;
    min-width: 0;
  }

  .pm-modal-content {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
  }

  .product-description,
  .pm-section-title {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
  }
}

/* Disable hover effects on touch devices */
@media (hover: none) and (pointer: coarse) {
  .pm-image-frame:hover,
  .pm-variant-option:hover,
  #productModal .tag-chip:hover,
  .pm-amazon-button:hover,
  .pm-tab:hover {
    transform: none !important;
    box-shadow: none !important;
    background: inherit !important;
  }
}