/* ============================================================
   VoltTrack – Electric Dirt Bikes USA
   Design System & Mobile-First Styles
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Brand Colors — Cobalt Blue primary */
  --green:        #2563eb;   /* primary (cobalt) — name kept for compatibility */
  --green-dark:   #1d4ed8;   /* primary dark */
  --green-light:  #dbeafe;   /* primary light tint */
  --orange:       #f59e0b;   /* amber accent */
  --orange-dark:  #d97706;
  --charcoal:     #0f172a;   /* deep navy-charcoal */
  --charcoal-2:   #1f2937;
  --charcoal-3:   #374151;
  --grey-1:       #6b7280;
  --grey-2:       #9ca3af;
  --grey-3:       #d1d5db;
  --grey-4:       #f3f4f6;
  --white:        #ffffff;
  --off-white:    #f9fafb;

  /* Typography */
  --font-sans:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Spacing scale */
  --s-1: 0.25rem; --s-2: 0.5rem;  --s-3: 0.75rem;
  --s-4: 1rem;    --s-6: 1.5rem;  --s-8: 2rem;
  --s-10: 2.5rem; --s-12: 3rem;   --s-16: 4rem;
  --s-20: 5rem;   --s-24: 6rem;

  /* Borders */
  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.10), 0 1px 2px rgba(0,0,0,.06);
  --shadow:    0 4px 6px -1px rgba(0,0,0,.10), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.10), 0 4px 6px -2px rgba(0,0,0,.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.10), 0 10px 10px -5px rgba(0,0,0,.04);

  /* Transitions */
  --t-fast: 150ms ease;
  --t-base: 250ms ease;
  --t-slow: 400ms ease;

  /* Layout */
  --max-w: 1280px;
  --nav-h: 64px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--charcoal);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea {
  font: inherit;
  border: none;
  background: none;
  outline: none;
}
ul, ol { list-style: none; }

/* ---------- Utility Classes ---------- */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 var(--s-4); }
@media (min-width: 640px)  { .container { padding: 0 var(--s-6); } }
@media (min-width: 1024px) { .container { padding: 0 var(--s-8); } }

.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; }
.hidden { display: none !important; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--s-2); }
.gap-4 { gap: var(--s-4); }
.text-center { text-align: center; }
.text-sm { font-size: .875rem; }
.text-xs { font-size: .75rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.uppercase { text-transform: uppercase; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- Announcement Bar ---------- */
.announce-bar {
  background: var(--charcoal);
  color: var(--white);
  font-size: .8125rem;
  font-weight: 500;
  text-align: center;
  padding: var(--s-2) var(--s-4);
  letter-spacing: .02em;
}
.announce-bar a { color: var(--green); text-decoration: underline; }
.announce-bar .announce-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-4);
  overflow: hidden;
}
.announce-bar span { white-space: nowrap; }
@media (max-width: 640px) {
  .announce-bar .announce-inner { gap: var(--s-6); animation: marquee 22s linear infinite; width: max-content; }
}
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* ---------- Navigation ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--grey-3);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: var(--s-4);
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--charcoal);
  letter-spacing: -.02em;
  flex-shrink: 0;
}
.logo svg { width: 28px; height: 28px; }
.logo .logo-volt { color: var(--green); }

.main-nav { display: none; }
@media (min-width: 1024px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 0;
    flex: 1;
    margin-left: var(--s-6);
  }
  .nav-item {
    position: relative;
  }
  .nav-link {
    display: flex;
    align-items: center;
    gap: var(--s-1);
    padding: var(--s-2) var(--s-3);
    font-size: .9375rem;
    font-weight: 500;
    color: var(--charcoal-2);
    border-radius: var(--radius-sm);
    transition: color var(--t-fast), background var(--t-fast);
    cursor: pointer;
    white-space: nowrap;
  }
  .nav-link:hover, .nav-link.active { color: var(--green-dark); background: var(--green-light); }
  .nav-link .chevron { transition: transform var(--t-fast); }
  .nav-item:hover .chevron { transform: rotate(180deg); }

  .dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: var(--white);
    border: 1px solid var(--grey-3);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    min-width: 580px;
    padding: var(--s-4);
    z-index: 200;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--s-4);
  }
  .nav-item:hover .dropdown,
  .nav-item:focus-within .dropdown { display: grid; }
  .dropdown-col h4 {
    font-size: .6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--grey-1);
    margin-bottom: var(--s-2);
    padding-bottom: var(--s-2);
    border-bottom: 1px solid var(--grey-3);
  }
  .dropdown-col a {
    display: block;
    padding: var(--s-1) var(--s-2);
    font-size: .875rem;
    color: var(--charcoal-2);
    border-radius: var(--radius-sm);
    transition: background var(--t-fast), color var(--t-fast);
  }
  .dropdown-col a:hover { background: var(--green-light); color: var(--green-dark); }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--s-2);
}
.nav-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  color: var(--charcoal-2);
  transition: background var(--t-fast);
  cursor: pointer;
  flex-shrink: 0;
}
.nav-icon-btn:hover { background: var(--grey-4); }
.nav-icon-btn svg { width: 22px; height: 22px; }

.cart-btn {
  position: relative;
  background: var(--green);
  color: var(--white);
  border-radius: var(--radius-sm);
  padding: var(--s-2) var(--s-3);
  font-weight: 600;
  font-size: .875rem;
  display: flex;
  align-items: center;
  gap: var(--s-1);
  transition: background var(--t-fast);
}
.cart-btn:hover { background: var(--green-dark); }
.cart-count {
  background: var(--orange);
  color: var(--white);
  border-radius: 999px;
  font-size: .6875rem;
  font-weight: 700;
  min-width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
}

.hamburger { cursor: pointer; }
@media (min-width: 1024px) { .hamburger { display: none; } }

/* ---------- Mobile Menu ---------- */
.mobile-menu {
  display: none;
  position: fixed; inset: 0; z-index: 300;
  background: rgba(0,0,0,.5);
}
.mobile-menu.open { display: block; }
.mobile-menu-panel {
  position: absolute; top: 0; left: 0;
  width: min(340px, 90vw); height: 100%;
  background: var(--white);
  overflow-y: auto;
  padding: var(--s-4);
  display: flex; flex-direction: column; gap: var(--s-2);
  transform: translateX(-100%);
  transition: transform var(--t-base);
}
.mobile-menu.open .mobile-menu-panel { transform: translateX(0); }
.mobile-close {
  align-self: flex-end;
  padding: var(--s-2);
  cursor: pointer;
  color: var(--charcoal-2);
}
.mobile-section-title {
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--grey-1);
  padding: var(--s-3) 0 var(--s-1);
  border-top: 1px solid var(--grey-3);
  margin-top: var(--s-2);
}
.mobile-nav-link {
  display: block;
  padding: var(--s-2) var(--s-2);
  font-size: .9375rem;
  font-weight: 500;
  color: var(--charcoal-2);
  border-radius: var(--radius-sm);
  transition: background var(--t-fast);
}
.mobile-nav-link:hover { background: var(--grey-4); }
.mobile-nav-link.featured { color: var(--green-dark); font-weight: 600; }

/* ---------- Hero Section ---------- */
.hero {
  background: linear-gradient(135deg, var(--charcoal) 0%, var(--charcoal-2) 60%, #0c2547 100%);
  color: var(--white);
  padding: var(--s-12) 0 var(--s-16);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(37,99,235,.12) 0%, transparent 65%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  gap: var(--s-8);
  align-items: center;
}
@media (min-width: 768px) {
  .hero { padding: var(--s-16) 0 var(--s-20); }
  .hero-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
  .hero { padding: var(--s-20) 0 var(--s-24); }
  .hero-grid { grid-template-columns: 55% 45%; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  background: rgba(37,99,235,.15);
  border: 1px solid rgba(37,99,235,.3);
  color: var(--green);
  border-radius: 999px;
  padding: var(--s-1) var(--s-3);
  font-size: .8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: var(--s-4);
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.03em;
  margin-bottom: var(--s-4);
}
.hero h1 .accent { color: var(--green); }
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  margin-bottom: var(--s-6);
  max-width: 520px;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-bottom: var(--s-8);
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-6);
}
.hero-stat strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--green);
  line-height: 1;
}
.hero-stat span {
  font-size: .8125rem;
  color: rgba(255,255,255,.6);
  margin-top: var(--s-1);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.hero-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: var(--s-4);
  backdrop-filter: blur(8px);
}
.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--s-3);
}
.hero-card-title {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--white);
}
.hero-card-badge {
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--green);
  color: var(--charcoal);
}
.hero-card-badge.hot { background: var(--orange); color: var(--white); }
.hero-spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-2);
}
.hero-spec {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-spec dt { font-size: .6875rem; color: rgba(255,255,255,.5); }
.hero-spec dd { font-size: .875rem; font-weight: 600; color: var(--white); }

/* ---------- Trust Bar ---------- */
.trust-bar {
  background: var(--off-white);
  border-bottom: 1px solid var(--grey-3);
  padding: var(--s-3) 0;
}
.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--s-4) var(--s-6);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  font-size: .8125rem;
  font-weight: 500;
  color: var(--charcoal-2);
  white-space: nowrap;
}
.trust-item svg { color: var(--green); flex-shrink: 0; }

/* ---------- Section Headings ---------- */
.section-header {
  text-align: center;
  margin-bottom: var(--s-8);
}
.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--green-dark);
  margin-bottom: var(--s-2);
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--charcoal);
}
.section-sub {
  margin-top: var(--s-3);
  font-size: 1rem;
  color: var(--grey-1);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ---------- Section Spacing ---------- */
.section { padding: var(--s-12) 0; }
.section-lg { padding: var(--s-16) 0; }
.section-sm { padding: var(--s-8) 0; }
.bg-off { background: var(--off-white); }
.bg-dark { background: var(--charcoal); color: var(--white); }
.bg-green { background: var(--green-dark); color: var(--white); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: .75rem 1.5rem;
  font-size: .9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--t-fast);
  white-space: nowrap;
  line-height: 1;
  border: 2px solid transparent;
}
.btn-primary { background: var(--green); color: var(--white); }
.btn-primary:hover { background: var(--green-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37,99,235,.3); }
.btn-secondary { background: var(--orange); color: var(--white); }
.btn-secondary:hover { background: var(--orange-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; border-color: rgba(255,255,255,.3); color: var(--white); }
.btn-outline:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5); }
.btn-outline-dark { background: transparent; border-color: var(--grey-3); color: var(--charcoal-2); }
.btn-outline-dark:hover { border-color: var(--green); color: var(--green-dark); }
.btn-lg { padding: 1rem 2rem; font-size: 1rem; }
.btn-sm { padding: .5rem 1rem; font-size: .8125rem; }
.btn-full { width: 100%; }

/* ---------- Category Cards ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-3);
  align-items: stretch;
}
@media (min-width: 640px)  { .category-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .category-grid { grid-template-columns: repeat(4, 1fr); gap: var(--s-4); } }
@media (min-width: 1280px) { .category-grid { grid-template-columns: repeat(5, 1fr); } }
.category-grid > li { display: flex; }

.category-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--grey-3);
  border-radius: var(--radius);
  padding: var(--s-4) var(--s-3);
  text-align: center;
  transition: all var(--t-base);
  cursor: pointer;
  overflow: hidden;
  width: 100%;
  display: flex;
  flex-direction: column;
}
.category-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--green);
  transform: scaleX(0);
  transition: transform var(--t-base);
}
.category-card:hover { border-color: var(--green); box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.category-card:hover::before { transform: scaleX(1); }
.cat-icon {
  font-size: 2rem;
  display: block;
  margin: 0 auto var(--s-3);
  line-height: 1;
}
.cat-name {
  display: block;
  font-size: .9375rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-bottom: var(--s-1);
  line-height: 1.3;
}
.cat-count {
  font-size: .75rem;
  color: var(--grey-1);
}
.cat-arrow {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--green-dark);
  margin-top: auto;
  padding-top: var(--s-2);
}

/* ---------- Product Cards ---------- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-4);
  align-items: stretch;
}
@media (min-width: 480px)  { .product-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px)  { .product-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .product-grid { grid-template-columns: repeat(4, 1fr); } }
/* List wrapper must stretch so every card in a row is identical height */
.product-grid > li { display: flex; }

.product-card {
  background: var(--white);
  border: 1px solid var(--grey-3);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--t-base);
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: var(--grey-2); }
.product-img-wrap {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--grey-4);
  overflow: hidden;
}
.product-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow); }
.product-card:hover .product-img-wrap img { transform: scale(1.04); }
.product-badge {
  position: absolute;
  top: var(--s-2);
  left: var(--s-2);
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 3px 8px;
  border-radius: 999px;
}
.badge-new      { background: var(--green);  color: var(--white); }
.badge-hot      { background: var(--orange); color: var(--white); }
.badge-offroad  { background: var(--charcoal); color: var(--white); }
.badge-beginner { background: #3b82f6; color: var(--white); }
.badge-sale     { background: #ef4444; color: var(--white); }

.product-body { padding: var(--s-4); flex: 1; display: flex; flex-direction: column; }
.product-brand { font-size: .6875rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--green-dark); margin-bottom: 4px; }
.product-name  {
  font-size: .9375rem; font-weight: 700; color: var(--charcoal);
  line-height: 1.3; margin-bottom: var(--s-2);
  /* Clamp to exactly 2 lines so every card title block is identical height */
  min-height: 2.6em;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.product-age-tag {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .6875rem;
  background: var(--grey-4);
  border-radius: 999px;
  padding: 4px 10px;
  color: var(--charcoal-2);
  font-weight: 500;
  margin-bottom: var(--s-3);
  width: fit-content;
  max-width: 100%;
  /* Single line, ellipsis — keeps every card's tag row identical height */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  height: 1.9em;
}
.product-spec-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-1) var(--s-3);
  margin-bottom: var(--s-3);
  /* Fixed two-row height so spec blocks line up across all cards */
  min-height: 3em;
  align-content: flex-start;
}
.product-spec {
  font-size: .75rem;
  color: var(--grey-1);
  display: flex;
  align-items: center;
  gap: 3px;
}
.product-spec strong { color: var(--charcoal-2); font-weight: 600; }
.product-footer { margin-top: auto; }
.product-price {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--charcoal);
  line-height: 1;
}
.product-price-from { font-size: .75rem; font-weight: 500; color: var(--grey-1); margin-right: 4px; }
.product-finance { font-size: .6875rem; color: var(--grey-1); margin-top: 4px; min-height: 2.4em; line-height: 1.2; }
.product-btn-row { display: flex; gap: var(--s-2); margin-top: var(--s-3); }
.product-btn-row .btn { flex: 1; font-size: .875rem; padding: .625rem 1rem; }

/* ---------- Brand Strip ---------- */
.brand-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s-2) var(--s-4);
}
.brand-chip {
  background: var(--grey-4);
  border: 1px solid var(--grey-3);
  border-radius: var(--radius-sm);
  padding: var(--s-2) var(--s-4);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--charcoal-2);
  transition: all var(--t-fast);
  cursor: pointer;
}
.brand-chip:hover { background: var(--green-light); border-color: var(--green); color: var(--green-dark); }

/* ---------- Age Guide Cards ---------- */
.age-grid {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: 1fr;
  align-items: stretch;
}
@media (min-width: 480px)  { .age-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .age-grid { grid-template-columns: repeat(4, 1fr); } }
.age-grid > li { display: flex; }

.age-card {
  background: var(--white);
  border: 1px solid var(--grey-3);
  border-radius: var(--radius);
  padding: var(--s-5) var(--s-4);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  transition: box-shadow var(--t-base);
  width: 100%;
  height: 100%;
}
.age-card:hover { box-shadow: var(--shadow-lg); }
.age-icon { font-size: 2.5rem; line-height: 1; }
.age-label {
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--green-dark);
}
.age-title { font-size: 1.0625rem; font-weight: 700; color: var(--charcoal); line-height: 1.3; min-height: 2.6em; }
.age-desc { font-size: .875rem; color: var(--grey-1); line-height: 1.6; flex: 1; min-height: 6.4em; }
.age-rec {
  background: var(--green-light);
  border-radius: var(--radius-sm);
  padding: var(--s-2) var(--s-3);
  font-size: .8125rem;
  font-weight: 600;
  color: var(--green-dark);
  min-height: 3.4em;
  display: flex;
  align-items: center;
}
.age-card .btn { margin-top: auto; }

/* ---------- Feature / Why Us ---------- */
.feature-grid {
  display: grid;
  gap: var(--s-6);
  grid-template-columns: 1fr;
}
@media (min-width: 640px)  { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .feature-grid { grid-template-columns: repeat(3, 1fr); } }

.feature-item { display: flex; flex-direction: column; gap: var(--s-3); }
.feature-icon-wrap {
  width: 52px; height: 52px;
  background: var(--green-light);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.feature-title { font-size: 1.0625rem; font-weight: 700; color: var(--charcoal); }
.feature-desc { font-size: .9rem; color: var(--grey-1); line-height: 1.7; }

/* ---------- Review Cards ---------- */
.review-grid {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: 1fr;
}
@media (min-width: 640px)  { .review-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .review-grid { grid-template-columns: repeat(3, 1fr); } }

.review-card {
  background: var(--white);
  border: 1px solid var(--grey-3);
  border-radius: var(--radius);
  padding: var(--s-5) var(--s-4);
}
.review-stars { color: #f59e0b; font-size: 1rem; margin-bottom: var(--s-3); }
.review-text { font-size: .9375rem; color: var(--charcoal-2); line-height: 1.7; margin-bottom: var(--s-4); font-style: italic; }
.review-author { display: flex; align-items: center; gap: var(--s-3); }
.review-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--green-light);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: .875rem;
  color: var(--green-dark);
  flex-shrink: 0;
}
.review-name { font-size: .875rem; font-weight: 600; color: var(--charcoal); }
.review-meta { font-size: .75rem; color: var(--grey-1); }

/* ---------- Guide Cards ---------- */
.guide-grid {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: 1fr;
  align-items: stretch;
}
@media (min-width: 640px)  { .guide-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .guide-grid { grid-template-columns: repeat(3, 1fr); } }
.guide-grid > li { display: flex; }

.guide-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--grey-3);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--t-base), transform var(--t-base);
  width: 100%;
  height: 100%;
}
.guide-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.guide-card-img {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--green-dark), var(--charcoal));
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
  color: var(--white);
  flex-shrink: 0;
}
.guide-card-body { padding: var(--s-4); flex: 1; display: flex; flex-direction: column; }
.guide-type {
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--green-dark);
  margin-bottom: var(--s-2);
}
.guide-title { font-size: 1rem; font-weight: 700; color: var(--charcoal); line-height: 1.4; margin-bottom: var(--s-2); }
.guide-desc { font-size: .875rem; color: var(--grey-1); line-height: 1.6; flex: 1; }
.guide-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px solid var(--grey-3);
  font-size: .75rem;
  color: var(--grey-1);
}
.guide-read-more { font-weight: 600; color: var(--green-dark); }

/* ---------- Comparison Table ---------- */
.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--grey-3);
  font-size: .875rem;
}
.compare-table th {
  background: var(--charcoal);
  color: var(--white);
  padding: var(--s-3) var(--s-4);
  text-align: left;
  font-weight: 600;
}
.compare-table td {
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--grey-3);
  vertical-align: middle;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:nth-child(even) td { background: var(--off-white); }
.win { font-weight: 700; color: var(--green-dark); }

/* ---------- Spec Table ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
.spec-table tr { border-bottom: 1px solid var(--grey-3); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table td { padding: var(--s-2) var(--s-3); }
.spec-table td:first-child { font-weight: 600; color: var(--charcoal-2); width: 42%; }
.spec-table td:last-child { color: var(--charcoal); }
.spec-table tr:nth-child(even) td { background: var(--grey-4); }

/* ---------- Compliance Alert ---------- */
.compliance-alert {
  background: #fefce8;
  border: 1px solid #fde047;
  border-left: 4px solid #f59e0b;
  border-radius: var(--radius-sm);
  padding: var(--s-3) var(--s-4);
  font-size: .875rem;
  color: #92400e;
  line-height: 1.6;
  display: flex;
  gap: var(--s-2);
}
.compliance-alert strong { font-weight: 700; }

/* ---------- FAQ Accordion ---------- */
.faq-list { display: flex; flex-direction: column; gap: var(--s-2); }
.faq-item {
  border: 1px solid var(--grey-3);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-4) var(--s-5);
  font-size: .9375rem;
  font-weight: 600;
  cursor: pointer;
  gap: var(--s-3);
  transition: background var(--t-fast);
}
.faq-q:hover { background: var(--grey-4); }
.faq-q .icon { flex-shrink: 0; transition: transform var(--t-fast); }
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a {
  display: none;
  padding: 0 var(--s-5) var(--s-4);
  font-size: .9375rem;
  color: var(--charcoal-2);
  line-height: 1.7;
}
.faq-item.open .faq-a { display: block; }

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--green-dark) 0%, #0a1f4d 100%);
  color: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--s-10) var(--s-8);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 120%, rgba(255,255,255,.08) 0%, transparent 60%);
}
.cta-banner h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 800; margin-bottom: var(--s-3); }
.cta-banner p { font-size: 1rem; opacity: .85; margin-bottom: var(--s-6); max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-banner-btns { display: flex; flex-wrap: wrap; gap: var(--s-3); justify-content: center; }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-1);
  font-size: .8125rem;
  color: var(--grey-1);
  padding: var(--s-3) 0;
}
.breadcrumb a { color: var(--grey-1); transition: color var(--t-fast); }
.breadcrumb a:hover { color: var(--green-dark); }
.breadcrumb-sep { color: var(--grey-3); }
.breadcrumb-current { color: var(--charcoal-2); font-weight: 500; }

/* ---------- Page Header ---------- */
.page-header {
  background: var(--off-white);
  border-bottom: 1px solid var(--grey-3);
  padding: var(--s-6) 0 var(--s-8);
}
.page-header h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 800; letter-spacing: -.03em; margin-bottom: var(--s-2); }
.page-header p { font-size: 1rem; color: var(--grey-1); max-width: 620px; line-height: 1.7; }

/* ---------- Filter Bar ---------- */
.filter-bar {
  background: var(--white);
  border: 1px solid var(--grey-3);
  border-radius: var(--radius);
  padding: var(--s-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  align-items: center;
  margin-bottom: var(--s-6);
}
.filter-group { display: flex; flex-direction: column; gap: var(--s-1); min-width: 140px; }
.filter-label { font-size: .6875rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--grey-1); }
.filter-select {
  padding: var(--s-2) var(--s-3);
  border: 1px solid var(--grey-3);
  border-radius: var(--radius-sm);
  font-size: .875rem;
  color: var(--charcoal);
  background: var(--white);
  cursor: pointer;
}
.filter-select:focus { border-color: var(--green); outline: 2px solid var(--green-light); }

/* ---------- Product Page Layout ---------- */
.product-page-grid {
  display: grid;
  gap: var(--s-8);
}
@media (min-width: 768px) { .product-page-grid { grid-template-columns: 1fr 420px; } }
@media (min-width: 1024px) { .product-page-grid { grid-template-columns: 1fr 460px; } }

.product-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.product-main-img {
  aspect-ratio: 4/3;
  background: var(--grey-4);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  font-size: 6rem;
}
.product-thumbs { display: flex; gap: var(--s-2); }
.product-thumb {
  width: 72px; height: 54px;
  border-radius: var(--radius-sm);
  background: var(--grey-4);
  border: 2px solid var(--grey-3);
  cursor: pointer;
  overflow: hidden;
  transition: border-color var(--t-fast);
}
.product-thumb.active { border-color: var(--green); }

.product-info-sticky { position: sticky; top: calc(var(--nav-h) + var(--s-4)); }
.product-info-panel { display: flex; flex-direction: column; gap: var(--s-4); }
.product-title-block .product-brand { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--green-dark); margin-bottom: var(--s-1); }
.product-title-block h1 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.2; }
.product-price-block { display: flex; flex-direction: column; gap: 4px; }
.product-price-block .price-main { font-size: 2rem; font-weight: 800; color: var(--charcoal); }
.price-finance { font-size: .875rem; color: var(--grey-1); }
.price-finance strong { color: var(--green-dark); }

.add-to-cart-btn {
  background: var(--green);
  color: var(--white);
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-size: 1.0625rem;
  font-weight: 700;
  width: 100%;
  display: flex; align-items: center; justify-content: center; gap: var(--s-2);
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  cursor: pointer;
}
.add-to-cart-btn:hover { background: var(--green-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(37,99,235,.35); }

.product-trust-list { display: flex; flex-direction: column; gap: var(--s-2); }
.product-trust-item {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  font-size: .875rem;
  color: var(--charcoal-2);
}
.product-trust-item svg { color: var(--green); flex-shrink: 0; }

/* ---------- Tabs ---------- */
.tabs { display: flex; flex-direction: column; gap: 0; }
.tab-nav {
  display: flex;
  border-bottom: 2px solid var(--grey-3);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.tab-nav::-webkit-scrollbar { display: none; }
.tab-btn {
  padding: var(--s-3) var(--s-4);
  font-size: .9375rem;
  font-weight: 600;
  color: var(--grey-1);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.tab-btn.active { color: var(--green-dark); border-bottom-color: var(--green-dark); }
.tab-panel { display: none; padding: var(--s-5) 0; }
.tab-panel.active { display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--charcoal);
  color: rgba(255,255,255,.85);
  padding: var(--s-12) 0 var(--s-6);
}
.footer-grid {
  display: grid;
  gap: var(--s-8);
  grid-template-columns: 1fr;
  margin-bottom: var(--s-10);
}
@media (min-width: 640px)  { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }

.footer-brand .logo { color: var(--white); margin-bottom: var(--s-3); }
.footer-brand .logo .logo-volt { color: var(--green); }
.footer-brand p { font-size: .9rem; color: rgba(255,255,255,.6); line-height: 1.7; max-width: 280px; }
.footer-col h4 {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: rgba(255,255,255,.5);
  margin-bottom: var(--s-3);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--s-2); }
.footer-col a {
  font-size: .875rem;
  color: rgba(255,255,255,.7);
  transition: color var(--t-fast);
}
.footer-col a:hover { color: var(--green); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: var(--s-5);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  font-size: .8125rem;
  color: rgba(255,255,255,.4);
}
.footer-legal { display: flex; flex-wrap: wrap; gap: var(--s-4); }
.footer-legal a { color: rgba(255,255,255,.4); transition: color var(--t-fast); }
.footer-legal a:hover { color: var(--green); }
.footer-disclaimer {
  font-size: .75rem;
  color: rgba(255,255,255,.35);
  line-height: 1.6;
  margin-top: var(--s-4);
  padding-top: var(--s-4);
  border-top: 1px solid rgba(255,255,255,.07);
}

/* ---------- Cookie Banner ---------- */
.cookie-banner {
  position: fixed;
  bottom: var(--s-4);
  left: var(--s-4);
  right: var(--s-4);
  max-width: 480px;
  background: var(--charcoal);
  color: var(--white);
  border-radius: var(--radius);
  padding: var(--s-4) var(--s-5);
  box-shadow: var(--shadow-xl);
  z-index: 500;
  display: none;
  font-size: .875rem;
  line-height: 1.6;
}
.cookie-banner.visible { display: block; }
.cookie-banner p { margin-bottom: var(--s-3); color: rgba(255,255,255,.8); }
.cookie-banner-btns { display: flex; gap: var(--s-2); }
.cookie-accept { background: var(--green); color: var(--white); border-radius: var(--radius-sm); padding: .5rem 1.25rem; font-weight: 600; font-size: .875rem; cursor: pointer; }
.cookie-decline { background: rgba(255,255,255,.1); color: rgba(255,255,255,.7); border-radius: var(--radius-sm); padding: .5rem 1.25rem; font-weight: 500; font-size: .875rem; cursor: pointer; }

/* ---------- Newsletter ---------- */
.newsletter-form { display: flex; gap: var(--s-2); flex-wrap: wrap; justify-content: center; }
.newsletter-form input[type=email] {
  flex: 1;
  min-width: 220px;
  padding: .75rem 1rem;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.1);
  color: var(--white);
  font-size: .9375rem;
}
.newsletter-form input::placeholder { color: rgba(255,255,255,.45); }
.newsletter-form button { padding: .75rem 1.5rem; background: var(--green); color: var(--white); border-radius: var(--radius-sm); font-weight: 600; cursor: pointer; transition: background var(--t-fast); }
.newsletter-form button:hover { background: var(--green-dark); }

/* ---------- Content / Prose ---------- */
.prose { max-width: 720px; }
.prose h2 { font-size: 1.5rem; font-weight: 800; margin: var(--s-8) 0 var(--s-3); color: var(--charcoal); }
.prose h3 { font-size: 1.125rem; font-weight: 700; margin: var(--s-6) 0 var(--s-2); color: var(--charcoal); }
.prose p  { margin-bottom: var(--s-4); color: var(--charcoal-2); line-height: 1.8; }
.prose ul { margin: 0 0 var(--s-4) var(--s-5); list-style: disc; }
.prose li { margin-bottom: var(--s-2); color: var(--charcoal-2); line-height: 1.7; }
.prose a  { color: var(--green-dark); text-decoration: underline; }
.prose strong { font-weight: 700; color: var(--charcoal); }

/* ---------- Form Styles ---------- */
.form-group { display: flex; flex-direction: column; gap: var(--s-1); }
.form-label { font-size: .875rem; font-weight: 600; color: var(--charcoal-2); }
.form-input, .form-select, .form-textarea {
  padding: .75rem 1rem;
  border: 1px solid var(--grey-3);
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  color: var(--charcoal);
  background: var(--white);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  width: 100%;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
  outline: none;
}
.form-textarea { resize: vertical; min-height: 120px; }

/* ---------- Contact Grid ---------- */
.contact-grid { display: grid; gap: var(--s-8); }
@media (min-width: 768px) { .contact-grid { grid-template-columns: 1fr 380px; } }

/* ---------- Responsive Helpers ---------- */
@media (max-width: 639px) {
  .hide-mobile { display: none !important; }
  .hero-ctas .btn-outline { display: none; }
}
@media (min-width: 640px) { .show-mobile-only { display: none !important; } }

/* ---------- Print ---------- */
@media print {
  .site-header, .site-footer, .announce-bar, .cookie-banner, .nav-actions { display: none; }
  body { color: #000; }
}