/* =============================================
   XYXX — Design Tokens & Custom Properties
   ============================================= */
:root {
  --color-primary: #0D0D0D;
  --color-accent: #D4FF00;
  --color-white: #FFFFFF;
  --color-bg: #F5F7FA;
  --color-gray-100: #F0F2F5;
  --color-gray-200: #E2E5EA;
  --color-gray-300: #B0B5BD;
  --color-gray-400: #7A7F87;
  --color-gray-500: #54585F;
  --color-gray-600: #2D2F33;
  --color-success: #22C55E;
  --color-error: #EF4444;

  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  --tracking-heading: -0.02em;
  --tracking-body: normal;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.18);

  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  --nav-height: 72px;
  --announcement-height: 40px;
}

/* =============================================
   RESET & BASE
   ============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
body {
  font-family: var(--font-body);
  color: var(--color-primary);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, button { font-family: inherit; }
ul { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); letter-spacing: var(--tracking-heading); line-height: 1.15; }
.text-lime { color: var(--color-accent); }
.hidden { display: none !important; }
.section-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* =============================================
   ZONE 1: ANNOUNCEMENT BAR
   ============================================= */
.announcement-bar {
  height: var(--announcement-height);
  background: var(--color-primary);
  color: var(--color-white);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
}
.announcement-track {
  display: flex;
  gap: 0;
  white-space: nowrap;
  animation: scrollAnnouncement 18s linear infinite;
}
.announcement-item {
  padding: 0 40px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.announcement-item::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  display: inline-block;
}
@keyframes scrollAnnouncement {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .announcement-track { animation: none; }
}

/* =============================================
   ZONE 1: NAVIGATION
   ============================================= */
.navbar {
  height: var(--nav-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-100);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
}

/* Logo */
.nav-logo {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  line-height: 1;
}

/* Desktop Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gray-500);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.nav-link:hover { color: var(--color-primary); background: var(--color-gray-100); }

/* Dropdown Parent */
.nav-dropdown { position: relative; }
.nav-dropdown:hover .mega-menu { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }

/* Mega Menu */
.mega-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 32px;
  min-width: 520px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-base);
  pointer-events: none;
  z-index: 200;
}
.mega-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.mega-col h4 {
  font-family: var(--font-body);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-400);
  margin-bottom: 16px;
  font-weight: 600;
}
.mega-col a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
}
.mega-col a:hover { color: var(--color-primary); font-weight: 600; }

/* Nav Actions */
.nav-actions { display: flex; align-items: center; gap: 12px; }
.search-box {
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border-radius: 100px;
  padding: 0 16px;
  gap: 8px;
  transition: box-shadow var(--transition-fast);
  border: 2px solid transparent;
}
.search-box:focus-within { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(212, 255, 0, 0.15); }
.search-box input {
  background: none;
  border: none;
  outline: none;
  font-size: 14px;
  color: var(--color-primary);
  padding: 10px 0;
  width: 140px;
  font-family: var(--font-body);
}
.search-box input::placeholder { color: var(--color-gray-300); }
.search-icon { color: var(--color-gray-400); display: flex; padding: 4px; }

.nav-icon {
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: background var(--transition-fast);
  position: relative;
}
.nav-icon:hover { background: var(--color-gray-100); }
.cart-icon { position: relative; }
.cart-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 700;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}
.nav-highlight .nav-link { color: var(--color-accent); }

/* Hamburger (Mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px;
}
.hamburger span {
  display: block;
  height: 2.5px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* =============================================
   MOBILE MENU
   ============================================= */
.mobile-menu {
  position: fixed;
  top: 0;
  left: -100%;
  width: 300px;
  height: 100vh;
  background: var(--color-white);
  z-index: 300;
  padding: 24px;
  transition: left var(--transition-base);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
}
.mobile-menu.open { left: 0; }
.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-gray-100);
}
.mobile-menu-title { font-family: var(--font-heading); font-size: 18px; font-weight: 700; }
.mobile-menu-header button { font-size: 28px; color: var(--color-gray-400); width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; }
.mobile-nav-links { flex: 1; }
.mobile-nav-links li a {
  display: block;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-600);
  border-bottom: 1px solid var(--color-gray-100);
}
.mobile-highlight a { color: var(--color-accent) !important; }
.mobile-menu-footer { margin-top: auto; padding-top: 24px; }
.mobile-accent-link {
  display: block;
  text-align: center;
  background: var(--color-primary);
  color: var(--color-accent);
  padding: 14px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
}
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 250;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}
.mobile-overlay.open { opacity: 1; visibility: visible; }

/* =============================================
   ZONE 2: HERO BUNDLE BUILDER
   ============================================= */
.hero-bundle {
  background: var(--color-primary);
  min-height: calc(100vh - var(--nav-height) - var(--announcement-height));
  display: flex;
  align-items: center;
}
.bundle-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
  width: 100%;
}

/* Dashboard */
.bundle-dashboard {
  position: sticky;
  top: calc(var(--nav-height) + var(--announcement-height) + 24px);
}
.bundle-title {
  font-size: clamp(32px, 4vw, 56px);
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: 8px;
}
.bundle-subtitle {
  font-size: clamp(16px, 1.5vw, 20px);
  color: var(--color-gray-300);
  margin-bottom: 4px;
}
.bundle-price-highlight {
  color: var(--color-accent);
  font-weight: 700;
  font-family: var(--font-heading);
}
.bundle-savings {
  font-size: 14px;
  color: var(--color-success);
  font-weight: 600;
  margin-bottom: 32px;
}

/* 5 Slots */
.bundle-slots {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}
.slot {
  aspect-ratio: 3/4;
  border: 2px dashed var(--color-gray-500);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.slot.filled {
  border-color: var(--color-accent);
  border-style: solid;
  background: var(--color-gray-600);
}
.slot.filled .slot-inner { opacity: 0; }
.slot.filled img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0; left: 0;
}
.slot-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  background: rgba(0,0,0,0.8);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  z-index: 2;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.slot.filled:hover .slot-remove { opacity: 1; }
.slot-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--color-gray-400);
}
.slot-number { font-family: var(--font-heading); font-size: 24px; font-weight: 700; }
.slot-plus { font-size: 18px; }

/* Tracker */
.bundle-tracker { margin-bottom: 24px; }
.tracker-text {
  font-size: 14px;
  color: var(--color-gray-300);
  margin-bottom: 10px;
}
.tracker-text strong { color: var(--color-accent); font-family: var(--font-heading); }
.tracker-bar {
  height: 4px;
  background: var(--color-gray-600);
  border-radius: 4px;
  overflow: hidden;
}
.tracker-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 4px;
  transition: width var(--transition-base);
}

/* Bundle CTA */
.bundle-cta {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: 0.02em;
  background: var(--color-accent);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: opacity var(--transition-fast);
}
.bundle-cta:disabled {
  background: var(--color-gray-600);
  color: var(--color-gray-400);
  cursor: not-allowed;
}

/* Picker */
.picker-filters {
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: sticky;
  top: calc(var(--nav-height) + var(--announcement-height) + 12px);
  background: var(--color-primary);
  padding: 8px 0;
  z-index: 10;
}
.filter-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-chip {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 100px;
  background: var(--color-gray-600);
  color: var(--color-gray-300);
  border: 1.5px solid transparent;
  transition: all var(--transition-fast);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.filter-chip:hover, .filter-chip.active {
  background: var(--color-accent);
  color: var(--color-primary);
}
.filter-chip.active { border-color: var(--color-accent); }

/* Product Grid */
.picker-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.product-card {
  background: var(--color-gray-600);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  cursor: pointer;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.product-image {
  aspect-ratio: 1;
  background: var(--color-primary);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.product-image svg {
  width: 100%;
  height: 100%;
}
.product-image .product-hover {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.product-card:hover .product-hover { opacity: 1; }
.product-info {
  padding: 14px;
}
.product-name {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 4px;
}
.product-pricing {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.product-price-single {
  font-size: 13px;
  color: var(--color-gray-300);
  text-decoration: line-through;
}
.product-price-bundle {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
}
.product-add-btn {
  width: 100%;
  padding: 10px;
  font-size: 13px;
  font-weight: 700;
  background: var(--color-accent);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: opacity var(--transition-fast);
  min-height: 44px;
}
.product-add-btn:hover { opacity: 0.85; }
.product-add-btn:disabled {
  background: var(--color-gray-400);
  color: var(--color-gray-600);
  cursor: not-allowed;
}
.product-card.added .product-add-btn {
  background: var(--color-success);
  color: var(--color-white);
}

/* =============================================
   ZONE 3: SCIENCE SHOWCASE
   ============================================= */
.science-section {
  padding: 96px 24px;
  background: var(--color-white);
}
.science-section .section-title {
  font-size: clamp(28px, 3.5vw, 44px);
  text-align: center;
  margin-bottom: 12px;
}
.science-section .section-subtitle {
  text-align: center;
  color: var(--color-gray-400);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 56px;
}
.science-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.science-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.science-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.science-visual {
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.science-modal-bg { background: linear-gradient(135deg, #1a1a2e, #16213e); }
.science-fresh-bg { background: linear-gradient(135deg, #0d1117, #161b22); }
.science-band-bg { background: linear-gradient(135deg, #1a1a1a, #2d2d2d); }

.fiber-visual {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(212,255,0,0.15), transparent 70%),
              radial-gradient(circle at 70% 70%, rgba(212,255,0,0.08), transparent 50%);
  position: relative;
}
.fiber-visual::before, .fiber-visual::after {
  content: '';
  position: absolute;
  width: 3px;
  background: var(--color-accent);
  border-radius: 4px;
  opacity: 0.3;
}
.fiber-visual::before {
  height: 60px;
  top: 30px;
  left: 40px;
  transform: rotate(-20deg);
}
.fiber-visual::after {
  height: 80px;
  top: 20px;
  right: 30px;
  transform: rotate(15deg);
  width: 2px;
}

.airflow-visual { width: 80px; height: 80px; }
.waistband-visual { width: 80px; height: 40px; }

.science-content { padding: 28px; }
.science-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: var(--color-primary);
  padding: 4px 10px;
  border-radius: 100px;
  margin-bottom: 12px;
}
.science-content h3 {
  font-size: 20px;
  margin-bottom: 8px;
}
.science-content p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* =============================================
   ZONE 4: PDP SECTION
   ============================================= */
.pdp-section {
  padding: 64px 24px;
  background: var(--color-bg);
}
.pdp-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.pdp-gallery { position: sticky; top: calc(var(--nav-height) + var(--announcement-height) + 24px); }
.pdp-main-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 16px;
  background: var(--color-primary);
}
.pdp-main-image svg { width: 100%; display: block; }
.pdp-img-placeholder { line-height: 0; }

.pdp-thumbnails {
  display: flex;
  gap: 12px;
}
.pdp-thumb {
  flex: 1;
  aspect-ratio: 4/5;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.pdp-thumb.active { border-color: var(--color-accent); }
.pdp-thumb svg { width: 100%; height: 100%; display: block; }

/* PDP Info Stack */
.pdp-reviews-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-gray-500);
  background: var(--color-white);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.pdp-title {
  font-size: clamp(28px, 3vw, 40px);
  margin-bottom: 12px;
}
.pdp-price-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.pdp-price {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 700;
}
.pdp-original {
  font-size: 20px;
  color: var(--color-gray-300);
  text-decoration: line-through;
}
.pdp-save {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-success);
  background: rgba(34,197,94,0.1);
  padding: 4px 10px;
  border-radius: 100px;
}
.pdp-desc {
  font-size: 15px;
  color: var(--color-gray-500);
  margin-bottom: 24px;
  line-height: 1.7;
}

/* Size Selector */
.pdp-size-selector {
  margin-bottom: 24px;
}
.size-selector-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.size-selector-header span { font-size: 14px; font-weight: 600; }
.find-fit-btn {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-primary);
  padding: 6px 14px;
  border-radius: 100px;
  transition: opacity var(--transition-fast);
}
.find-fit-btn:hover { opacity: 0.8; }
.size-options {
  display: flex;
  gap: 10px;
}
.size-btn {
  flex: 1;
  padding: 12px;
  font-size: 14px;
  font-weight: 600;
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  min-height: 48px;
}
.size-btn:hover { border-color: var(--color-primary); }
.size-btn.active { border-color: var(--color-accent); background: var(--color-primary); color: var(--color-accent); }

/* PDP CTA */
.pdp-cta {
  width: 100%;
  padding: 16px;
  background: var(--color-accent);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin-bottom: 20px;
  transition: opacity var(--transition-fast);
  min-height: 60px;
}
.pdp-cta:hover { opacity: 0.88; }
.pdp-cta span:first-child { font-size: 16px; font-weight: 700; font-family: var(--font-heading); letter-spacing: 0.04em; }
.pdp-cta-sub { font-size: 12px; font-weight: 500; opacity: 0.7; }

/* Trust Section */
.pdp-trust { display: flex; flex-direction: column; gap: 12px; }
.trust-payments { display: flex; gap: 8px; flex-wrap: wrap; }
.trust-badge {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 100px;
  color: var(--color-gray-500);
}
.trust-return {
  font-size: 13px;
  color: var(--color-gray-400);
  display: flex;
  align-items: center;
  gap: 6px;
}
.trust-return::before {
  content: '';
  width: 16px;
  height: 16px;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='%2322C55E' stroke-width='2' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M22 11.08V12a10 10 0 11-5.93-9.14'/%3E%3Cpolyline points='22 4 12 14.01 9 11.01'/%3E%3C/svg%3E") no-repeat center;
  background-size: contain;
}

/* =============================================
   FIND MY FIT OVERLAY
   ============================================= */
.fit-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  padding: 24px;
}
.fit-overlay.open { opacity: 1; visibility: visible; }
.fit-modal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 40px;
  max-width: 480px;
  width: 100%;
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition-base);
}
.fit-overlay.open .fit-modal { transform: scale(1); }
.fit-close {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 28px;
  color: var(--color-gray-400);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.fit-modal h2 { font-size: 24px; margin-bottom: 8px; }
.fit-sub { color: var(--color-gray-400); font-size: 14px; margin-bottom: 24px; }
.fit-step label { font-size: 14px; font-weight: 600; display: block; margin-bottom: 12px; }
.fit-options { display: flex; flex-direction: column; gap: 8px; }
.fit-option {
  width: 100%;
  text-align: left;
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: all var(--transition-fast);
}
.fit-option:hover { border-color: var(--color-gray-300); }
.fit-option.selected { border-color: var(--color-accent); background: rgba(212,255,0,0.08); }
.fit-result { text-align: center; padding: 20px 0; }
.fit-result-icon { margin-bottom: 16px; }
.fit-result p { font-size: 18px; margin-bottom: 8px; }
.fit-result strong { font-family: var(--font-heading); font-size: 24px; color: var(--color-accent); background: var(--color-primary); padding: 2px 12px; border-radius: var(--radius-sm); }
.fit-note { font-size: 13px; color: var(--color-gray-400); }

/* =============================================
   ZONE 5: CART DRAWER
   ============================================= */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 400;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}
.cart-overlay.open { opacity: 1; visibility: visible; }

.cart-drawer {
  position: fixed;
  top: 0;
  right: -420px;
  width: 420px;
  max-width: 100vw;
  height: 100vh;
  background: var(--color-white);
  z-index: 450;
  display: flex;
  flex-direction: column;
  transition: right var(--transition-base);
  box-shadow: var(--shadow-xl);
}
.cart-drawer.open { right: 0; }

.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-gray-100);
  flex-shrink: 0;
}
.cart-header h2 { font-size: 20px; }
.cart-close { color: var(--color-gray-400); display: flex; padding: 4px; }

/* Reward Tracker */
.cart-reward {
  padding: 16px 24px;
  background: var(--color-bg);
  flex-shrink: 0;
}
.reward-text { font-size: 13px; color: var(--color-gray-500); margin-bottom: 8px; }
.reward-text strong { color: var(--color-accent); }
.reward-bar {
  height: 4px;
  background: var(--color-gray-200);
  border-radius: 4px;
  overflow: hidden;
}
.reward-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 4px;
  transition: width var(--transition-base);
}

/* Cart Items */
.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px;
}
.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  gap: 8px;
}
.cart-empty p { font-weight: 600; color: var(--color-gray-500); }
.cart-empty span { font-size: 13px; color: var(--color-gray-400); }

.cart-item {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-gray-100);
  align-items: center;
}
.cart-item-visual {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.cart-item-info { min-width: 0; }
.cart-item-name {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cart-item-variant { font-size: 12px; color: var(--color-gray-400); }
.cart-item-actions { display: flex; align-items: center; gap: 8px; }
.quantity-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  transition: background var(--transition-fast);
}
.quantity-btn:hover { background: var(--color-gray-200); }
.cart-item-qty { font-size: 14px; font-weight: 600; min-width: 20px; text-align: center; }
.cart-item-remove {
  color: var(--color-gray-400);
  padding: 4px;
  display: flex;
  transition: color var(--transition-fast);
}
.cart-item-remove:hover { color: var(--color-error); }

/* Cross Sell */
.cart-cross-sell {
  padding: 16px 24px;
  border-top: 1px solid var(--color-gray-100);
  flex-shrink: 0;
}
.cross-sell-title { font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.cross-sell-track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 4px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.cross-sell-track::-webkit-scrollbar { display: none; }
.cross-sell-item {
  flex-shrink: 0;
  width: 160px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.cross-sell-visual {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cross-sell-name { font-size: 12px; font-weight: 600; }
.cross-sell-price { font-size: 13px; font-weight: 700; color: var(--color-accent); background: var(--color-primary); padding: 2px 8px; border-radius: 100px; }
.cross-sell-add {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
}
.cross-sell-add:hover { opacity: 0.8; }

/* Cart Footer */
.cart-footer {
  padding: 16px 24px 24px;
  border-top: 1px solid var(--color-gray-100);
  flex-shrink: 0;
}
.cart-total {
  display: flex;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
}
.cart-checkout {
  width: 100%;
  padding: 16px;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-heading);
  background: var(--color-accent);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: opacity var(--transition-fast);
  min-height: 52px;
}
.cart-checkout:hover { opacity: 0.88; }

/* =============================================
   ZONE 6: FOOTER
   ============================================= */
.site-footer {
  background: var(--color-primary);
  color: var(--color-white);
}
.footer-container { max-width: 1200px; margin: 0 auto; padding: 64px 24px 0; }
.footer-columns {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  display: block;
  margin-bottom: 16px;
}
.footer-mission { font-size: 14px; color: var(--color-gray-300); line-height: 1.7; margin-bottom: 24px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-300);
  transition: all var(--transition-fast);
}
.footer-social a:hover { border-color: var(--color-accent); color: var(--color-accent); }

.footer-col h4 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  color: var(--color-accent);
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 14px;
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--color-white); }

.footer-newsletter p {
  font-size: 14px;
  color: var(--color-gray-300);
  margin-bottom: 16px;
}
.newsletter-form {
  display: flex;
  gap: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.newsletter-form input {
  flex: 1;
  padding: 12px 16px;
  font-size: 14px;
  border: none;
  outline: none;
  background: var(--color-gray-600);
  color: var(--color-white);
  min-width: 0;
}
.newsletter-form input::placeholder { color: var(--color-gray-400); }
.newsletter-form button {
  padding: 12px 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: var(--color-accent);
  color: var(--color-primary);
  white-space: nowrap;
}

/* Footer Bottom */
.footer-bottom {
  border-top: 1px solid var(--color-gray-600);
}
.footer-bottom-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-badges { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.ssl-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-gray-400);
}
.payment-badges { font-size: 12px; color: var(--color-gray-400); }
.footer-copyright { font-size: 12px; color: var(--color-gray-500); }

/* =============================================
   RESPONSIVE > TABLET (max 1024px)
   ============================================= */
@media (max-width: 1024px) {
  .bundle-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .bundle-dashboard { position: static; }
  .bundle-slots { grid-template-columns: repeat(5, 1fr); }
  .picker-grid { grid-template-columns: repeat(3, 1fr); }
  .science-grid { grid-template-columns: repeat(2, 1fr); }
  .pdp-container { grid-template-columns: 1fr; gap: 32px; }
  .pdp-gallery { position: static; }
  .footer-columns { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

/* =============================================
   RESPONSIVE > MOBILE (max 768px)
   ============================================= */
@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .nav-links, .search-box { display: none; }
  .hamburger { display: flex; }
  .nav-container { grid-template-columns: auto 1fr auto; gap: 16px; }
  .nav-logo { font-size: 24px; }

  .announcement-item { font-size: 12px; padding: 0 24px; }

  .bundle-container { padding: 24px 16px; }
  .bundle-slots { grid-template-columns: repeat(5, 1fr); gap: 8px; }
  .slot-number { font-size: 18px; }
  .bundle-title { font-size: 28px; }
  .picker-filters { gap: 8px; }
  .filter-group { gap: 6px; }
  .filter-chip { font-size: 12px; padding: 6px 12px; min-height: 36px; }
  .picker-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .product-info { padding: 10px; }
  .product-name { font-size: 12px; }
  .product-add-btn { font-size: 12px; padding: 8px; min-height: 40px; }

  .science-section { padding: 56px 16px; }
  .science-grid { grid-template-columns: 1fr; gap: 16px; }
  .science-content { padding: 20px; }

  .pdp-section { padding: 32px 16px; }
  .pdp-title { font-size: 24px; }
  .pdp-price { font-size: 26px; }
  .size-btn { padding: 10px; min-height: 44px; }

  .cart-drawer { width: 100vw; right: -100vw; }

  .footer-columns { grid-template-columns: 1fr; gap: 32px; }
  .footer-container { padding: 40px 16px 0; }
  .footer-bottom-content { flex-direction: column; text-align: center; gap: 8px; }
}

/* =============================================
   RESPONSIVE > SMALL MOBILE (max 480px)
   ============================================= */
@media (max-width: 480px) {
  .bundle-slots { gap: 6px; }
  .slot-number { font-size: 14px; }
  .slot-plus { font-size: 14px; }
  .picker-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .product-pricing { flex-wrap: wrap; gap: 4px; }
  .trust-payments { gap: 6px; }
  .trust-badge { font-size: 11px; padding: 4px 10px; }
}

/* =============================================
   ANIMATIONS & UTILITY
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.science-card, .product-card { animation: fadeInUp 0.6s ease-out both; }
.science-card:nth-child(2) { animation-delay: 0.1s; }
.science-card:nth-child(3) { animation-delay: 0.2s; }

@keyframes pulse-lime {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212, 255, 0, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(212, 255, 0, 0); }
}
.bundle-cta:not(:disabled):hover { animation: pulse-lime 1.5s infinite; }

/* Selection Color */
::selection { background: var(--color-accent); color: var(--color-primary); }

/* Scrollbar Styling for Cart */
.cart-items::-webkit-scrollbar { width: 4px; }
.cart-items::-webkit-scrollbar-track { background: transparent; }
.cart-items::-webkit-scrollbar-thumb { background: var(--color-gray-200); border-radius: 4px; }