/* ============================================
   Reliable RAM — Design System
   Colors: Arctic White + Deep Navy
   ============================================ */

:root {
  /* Brand Colors */
  --arctic-white: #F8FAFB;
  --deep-navy: #0A1628;
  --navy-light: #1A2D4A;
  --navy-mid: #132240;
  --accent-blue: #007BFF;
  --accent-blue-hover: #0056D4;
  --silver: #8B95A5;
  --silver-light: #C8CDD5;
  --success: #28A745;
  --warning: #FFC107;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(10, 22, 40, 0.08);
  --shadow-md: 0 4px 12px rgba(10, 22, 40, 0.1);
  --shadow-lg: 0 8px 30px rgba(10, 22, 40, 0.12);
  --transition: 0.2s ease;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-main);
  background: var(--arctic-white);
  color: var(--deep-navy);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-blue-hover); }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--deep-navy);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ---- Header / Nav ---- */
.site-header {
  background: var(--deep-navy);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--arctic-white);
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
}

.nav-logo img {
  height: 40px;
  width: 40px;
  object-fit: contain;
}

.nav-logo span {
  color: var(--arctic-white);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  color: var(--silver-light);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--arctic-white);
}

.nav-cta {
  background: var(--accent-blue);
  color: var(--arctic-white) !important;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: background var(--transition);
}

.nav-cta:hover {
  background: var(--accent-blue-hover);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--arctic-white);
  margin: 5px 0;
  transition: var(--transition);
}

/* ---- Hero ---- */
.hero {
  background: linear-gradient(135deg, var(--deep-navy) 0%, var(--navy-light) 100%);
  padding: var(--space-3xl) 0;
  text-align: center;
  color: var(--arctic-white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(0, 123, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  color: var(--arctic-white);
  margin-bottom: var(--space-md);
  position: relative;
}

.hero .tagline {
  font-size: 1.2rem;
  color: var(--silver-light);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  line-height: 1.5;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-xl);
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(255,255,255,0.15);
}

.hero-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  gap: var(--space-sm);
}

.btn-primary {
  background: var(--accent-blue);
  color: var(--arctic-white);
}

.btn-primary:hover {
  background: var(--accent-blue-hover);
  color: var(--arctic-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--arctic-white);
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
  border-color: var(--arctic-white);
  color: var(--arctic-white);
}

.btn-outline {
  background: transparent;
  color: var(--accent-blue);
  border: 2px solid var(--accent-blue);
}

.btn-outline:hover {
  background: var(--accent-blue);
  color: var(--arctic-white);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.btn-group {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Sections ---- */
.section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header p {
  color: var(--silver);
  font-size: 1.1rem;
  max-width: 600px;
  margin: var(--space-sm) auto 0;
}

.section-dark {
  background: var(--deep-navy);
  color: var(--arctic-white);
}

.section-dark h2,
.section-dark h3 {
  color: var(--arctic-white);
}

/* ---- Product Grid ---- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.product-card {
  background: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(10, 22, 40, 0.06);
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.product-card-img {
  aspect-ratio: 4/3;
  background: #EEF1F5;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card-img .placeholder-icon {
  font-size: 3rem;
  color: var(--silver-light);
}

.product-badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background: var(--accent-blue);
  color: white;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.product-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-body h3 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.product-category {
  color: var(--silver);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-sm);
}

.product-card-body .description {
  color: var(--silver);
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--deep-navy);
  margin-bottom: var(--space-sm);
}

.product-price .contact-price {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--silver);
}

.product-card-footer {
  display: flex;
  gap: var(--space-sm);
  margin-top: auto;
}

.product-card-footer .btn {
  flex: 1;
  font-size: 0.85rem;
  padding: 0.6rem 1rem;
}

/* ---- Category Filter ---- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-2xl);
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  border: 2px solid rgba(10, 22, 40, 0.1);
  background: white;
  border-radius: 30px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--deep-navy);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--deep-navy);
  color: var(--arctic-white);
  border-color: var(--deep-navy);
}

/* ---- Features / Trust Section ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  text-align: center;
  padding: var(--space-xl);
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-md);
  background: rgba(0, 123, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.section-dark .feature-icon {
  background: rgba(0, 123, 255, 0.2);
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--silver);
  font-size: 0.95rem;
}

.section-dark .feature-card p {
  color: var(--silver-light);
}

/* ---- Product Detail ---- */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  padding: var(--space-2xl) 0;
}

.product-gallery {
  background: #EEF1F5;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-info h1 {
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
}

.product-info .sku {
  color: var(--silver);
  font-size: 0.85rem;
  font-family: monospace;
  margin-bottom: var(--space-lg);
}

.product-info .price-display {
  font-size: 2rem;
  font-weight: 700;
  color: var(--deep-navy);
  margin-bottom: var(--space-lg);
}

.spec-table {
  width: 100%;
  margin: var(--space-lg) 0;
}

.spec-table tr {
  border-bottom: 1px solid rgba(10, 22, 40, 0.06);
}

.spec-table td {
  padding: var(--space-sm) 0;
}

.spec-table td:first-child {
  font-weight: 600;
  color: var(--silver);
  width: 40%;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.condition-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(40, 167, 69, 0.1);
  color: var(--success);
  margin-bottom: var(--space-md);
}

/* ---- About / Content Pages ---- */
.content-page {
  padding: var(--space-3xl) 0;
}

.content-page .content-body {
  max-width: 800px;
  margin: 0 auto;
}

.content-body h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.content-body p {
  margin-bottom: var(--space-md);
  color: #3A4A5C;
  line-height: 1.7;
}

/* ---- Contact Form ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid rgba(10, 22, 40, 0.1);
  border-radius: var(--border-radius);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: white;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-info-card {
  background: var(--deep-navy);
  color: var(--arctic-white);
  padding: var(--space-2xl);
  border-radius: var(--border-radius-lg);
}

.contact-info-card h3 {
  color: var(--arctic-white);
  margin-bottom: var(--space-lg);
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  color: var(--silver-light);
}

.contact-detail .icon {
  width: 40px;
  height: 40px;
  background: rgba(0, 123, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ---- FAQ ---- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(10, 22, 40, 0.08);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  font-family: var(--font-main);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--deep-navy);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--accent-blue);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  content: '\2212';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding-bottom: var(--space-lg);
  color: #3A4A5C;
  line-height: 1.6;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--deep-navy);
  color: var(--silver-light);
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand p {
  color: var(--silver);
  font-size: 0.9rem;
  margin-top: var(--space-sm);
}

.site-footer h4 {
  color: var(--arctic-white);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-md);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--silver);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--arctic-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: 0.85rem;
  color: var(--silver);
}

/* ---- Utilities ---- */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-xl); }
.mb-1 { margin-bottom: var(--space-md); }
.mb-2 { margin-bottom: var(--space-xl); }

/* ---- Search Bar ---- */
.search-bar {
  max-width: 500px;
  margin: 0 auto var(--space-lg);
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  border: 2px solid rgba(10, 22, 40, 0.1);
  border-radius: 30px;
  font-size: 0.95rem;
  font-family: var(--font-main);
  background: white;
  transition: border-color var(--transition);
}

.search-bar input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.search-bar .search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--silver);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--deep-navy);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding: var(--space-2xl) 0;
  }

  .product-detail {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .btn-group {
    flex-direction: column;
    align-items: center;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Loading State ---- */
.skeleton {
  background: linear-gradient(90deg, #EEF1F5 25%, #E0E5EB 50%, #EEF1F5 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--border-radius);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---- Notification Banner ---- */
.banner {
  background: var(--accent-blue);
  color: white;
  text-align: center;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
}

.banner a {
  color: white;
  text-decoration: underline;
}

/* ============================================
   Accessibility & Enhancements (v2)
   ============================================ */

/* ---- Skip Link ---- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--accent-blue);
  color: white;
  padding: var(--space-sm) var(--space-lg);
  border-radius: 0 0 var(--border-radius) var(--border-radius);
  font-weight: 600;
  z-index: 200;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
  color: white;
}

/* ---- Focus Styles (WCAG AA) ---- */
*:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 3px solid white;
  outline-offset: 2px;
  box-shadow: 0 0 0 5px var(--accent-blue);
}

.nav-links a:focus-visible {
  outline: 2px solid var(--arctic-white);
  outline-offset: 4px;
  border-radius: 2px;
}

.filter-btn:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
}

.faq-question:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
  border-radius: var(--border-radius);
}

/* Remove outline for mouse clicks, keep for keyboard */
:focus:not(:focus-visible) {
  outline: none;
}

/* ---- Stats Bar ---- */
.stats-bar {
  background: white;
  border-bottom: 1px solid rgba(10, 22, 40, 0.06);
}

.stats-inner {
  display: flex;
  justify-content: center;
  gap: 3rem;
  padding: 1.5rem 0;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--deep-navy);
}

.stat-label {
  color: var(--silver);
  font-size: 0.85rem;
}

/* ---- Category Cards ---- */
.category-card {
  text-decoration: none;
  color: var(--deep-navy);
  background: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
  border: 1px solid rgba(10, 22, 40, 0.06);
  text-align: center;
  padding: var(--space-xl);
  display: block;
}

.category-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: var(--deep-navy);
}

.category-card h3 {
  color: var(--deep-navy);
}

.category-card p {
  color: var(--silver);
  font-size: 0.95rem;
}

/* ---- Improved Mobile Touch Targets ---- */
@media (max-width: 768px) {
  .nav-links a {
    padding: var(--space-sm) 0;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .filter-btn {
    min-height: 44px;
    min-width: 44px;
  }

  .btn {
    min-height: 48px;
    padding: 0.875rem 1.75rem;
  }

  .btn-sm {
    min-height: 44px;
  }

  .faq-question {
    min-height: 48px;
    padding: var(--space-lg) var(--space-sm);
  }

  .product-card-footer {
    padding: 0 var(--space-md) var(--space-md) !important;
  }

  .product-card-footer .btn {
    min-height: 44px;
    font-size: 0.9rem;
  }

  .stats-inner {
    gap: 1.5rem;
  }

  .stat-number {
    font-size: 1.4rem;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    min-height: 48px;
    font-size: 16px; /* prevents iOS zoom */
  }
}

/* ---- High Contrast Accessibility Improvements ---- */
/* Ensure silver text on white meets 4.5:1 ratio */
.product-category,
.stat-label,
.section-header p,
.feature-card p,
.product-card-body .description {
  color: #5F6B7A; /* 4.8:1 on white — meets AA */
}

.category-card p {
  color: #5F6B7A;
}

/* Ensure footer links meet contrast on dark bg */
.footer-links a {
  color: #A0AAB8; /* 4.5:1 on #0A1628 */
}

.footer-brand p {
  color: #A0AAB8;
}

/* ---- Visually Hidden Utility (screen readers) ---- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Sticky Mobile Buy Bar ---- */
.sticky-buy-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  border-top: 1px solid rgba(10, 22, 40, 0.1);
  padding: var(--space-sm) 0;
  z-index: 90;
  box-shadow: 0 -4px 12px rgba(10, 22, 40, 0.1);
}

@media (max-width: 768px) {
  .sticky-buy-bar {
    display: block;
  }

  /* Add bottom padding to body when sticky bar is present */
  body:has(.sticky-buy-bar) {
    padding-bottom: 80px;
  }
}

/* ---- Buy Button Emphasis ---- */
.btn-buy {
  font-size: 1.05rem;
  padding: 0.875rem 2rem;
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.btn-buy:hover {
  box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

/* ---- Trust Signals ---- */
.trust-signals span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* ---- Image Lightbox ---- */
.product-gallery {
  cursor: zoom-in;
  position: relative;
}

.product-gallery.has-image::after {
  content: 'Click to enlarge';
  position: absolute;
  bottom: var(--space-sm);
  right: var(--space-sm);
  background: rgba(10, 22, 40, 0.7);
  color: white;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity var(--transition);
}

.product-gallery.has-image:hover::after {
  opacity: 1;
}

.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 22, 40, 0.9);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
  padding: var(--space-lg);
}

.lightbox-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--border-radius);
}

.lightbox-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: rgba(255,255,255,0.15);
  border: none;
  color: white;
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.25);
}

/* ---- Print Styles ---- */
@media print {
  .site-header, .site-footer, .nav-toggle, .btn, .filter-bar, .search-bar {
    display: none !important;
  }
  body {
    color: black;
    background: white;
  }
}