/* =========================================
   NIKE.COM — CUSTOM STYLESHEET v2.0
   Complete CSS overhaul with full responsive
   Fonts: Oswald (headings) + Roboto (body)
   Palette: #111, #fff, #F5F5F5
   ========================================= */

/* ---------- ROOT VARIABLES ---------- */
:root {
  --black: #111111;
  --white: #ffffff;
  --gray-light: #F5F5F5;
  --gray-mid: #e5e5e5;
  --gray-dark: #767676;
  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Roboto', sans-serif;
  --transition: 0.3s ease;
  --nav-height: 64px;
  --mega-shadow: 0 24px 64px rgba(0,0,0,0.10);
}

/* ---------- BASE RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--black);
  font-size: 15px;
  line-height: 1.6;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  font-weight: 700;
  line-height: 1.05;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; height: auto; }
button { font-family: inherit; }

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--gray-light); }
::-webkit-scrollbar-thumb { background: var(--black); border-radius: 3px; }

/* ==========================================
   NAVBAR
   ========================================== */
.nike-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--white);
  border-bottom: 1px solid var(--gray-mid);
  transition: box-shadow var(--transition);
}
.nike-nav.scrolled {
  box-shadow: 0 2px 24px rgba(0,0,0,0.08);
}
.nav-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 100%;
  padding: 0 24px;
}
.nav-left {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-logo {
  text-align: center;
}
.nav-logo svg {
  width: 54px;
  height: auto;
  display: inline-block;
  transition: transform 0.25s ease;
}
.nav-logo svg:hover { transform: scale(1.07); }
.nav-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

/* ---------- NAV LINKS ---------- */
.nav-item-mega {
  position: static;
}
.nav-item-mega > a,
.nav-left > a {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--black);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  border-radius: 4px;
  transition: background var(--transition);
  white-space: nowrap;
}
.nav-item-mega > a:hover,
.nav-left > a:hover {
  background: var(--gray-light);
}
.nav-item-mega > a::after {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  margin-left: 2px;
  opacity: 0.5;
  transition: transform var(--transition);
}
.nav-item-mega:hover > a::after {
  transform: rotate(-135deg) translateY(-2px);
  opacity: 1;
}

/* ==========================================
   MEGA MENU — CSS-DRIVEN HOVER
   ========================================== */
.mega-menu-wrapper {
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: var(--white);
  border-top: 2px solid var(--black);
  box-shadow: var(--mega-shadow);
  padding: 40px 60px 48px;
  z-index: 999;
  /* Hidden state */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition:
    opacity 0.25s ease,
    visibility 0.25s ease,
    transform 0.25s ease;
  pointer-events: none;
}
.nav-item-mega:hover .mega-menu-wrapper {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: all;
}

/* Mega columns */
.mega-columns {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 40px;
  max-width: 1400px;
  margin: 0 auto;
}
.mega-col h6 {
  font-size: 10px;
  font-family: var(--font-heading);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-dark);
  border-bottom: 1px solid var(--gray-mid);
  padding-bottom: 10px;
  margin-bottom: 16px;
}
.mega-col ul { list-style: none; }
.mega-col ul li { margin-bottom: 6px; }
.mega-col ul li a {
  font-size: 14px;
  color: var(--black);
  font-weight: 400;
  padding: 3px 0;
  display: inline-block;
  position: relative;
  transition: letter-spacing 0.2s ease;
}
.mega-col ul li a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--black);
  transition: width 0.2s ease;
}
.mega-col ul li a:hover {
  letter-spacing: 0.03em;
}
.mega-col ul li a:hover::after { width: 100%; }

/* Featured image in mega menu */
.mega-featured {
  grid-column: span 1;
}
.mega-featured-img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  background: var(--gray-light);
  margin-bottom: 12px;
  transition: transform 0.4s ease;
}
.mega-featured:hover .mega-featured-img { transform: scale(1.03); }
.mega-featured-label {
  font-family: var(--font-heading);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ==========================================
   PILL SEARCH BAR
   ========================================== */
.nav-search {
  display: flex;
  align-items: center;
  background: var(--gray-light);
  border-radius: 50px;
  padding: 8px 16px;
  gap: 8px;
  width: 190px;
  transition: width 0.35s ease, background 0.25s ease, box-shadow 0.25s ease;
}
.nav-search:focus-within {
  width: 240px;
  box-shadow: 0 0 0 2px var(--black);
  background: var(--white);
}
.nav-search input {
  border: none;
  background: transparent;
  outline: none;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--black);
  width: 100%;
  min-width: 0;
}
.nav-search input::placeholder { color: var(--gray-dark); }
.nav-search svg { flex-shrink: 0; color: var(--gray-dark); }

/* ---------- NAV ICON BUTTONS ---------- */
.nav-icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background var(--transition);
  position: relative;
}
.nav-icon-btn:hover { background: var(--gray-light); }
.cart-badge {
  position: absolute;
  top: 1px; right: 1px;
  background: var(--black);
  color: var(--white);
  border-radius: 50%;
  font-size: 9px;
  width: 16px; height: 16px;
  display: none; /* hidden by default, shown by JS when count > 0 */
  align-items: center; justify-content: center;
  font-family: var(--font-heading);
  transition: transform 0.2s ease;
}

/* ---------- HAMBURGER ---------- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px;
  border-radius: 4px;
  transition: background var(--transition);
}
.hamburger:hover { background: var(--gray-light); }
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: left center;
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translateY(-1px); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translateY(1px); }

/* ==========================================
   MOBILE DRAWER MENU
   ========================================== */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
  backdrop-filter: blur(2px);
}
.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}
.mobile-drawer {
  position: fixed;
  top: 0; left: 0;
  width: 320px;
  max-width: 90vw;
  height: 100vh;
  background: var(--white);
  z-index: 2000;
  transform: translateX(-100%);
  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.mobile-drawer.open { transform: translateX(0); }

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-mid);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 1;
}
.mobile-drawer-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.mobile-drawer-close:hover { background: var(--gray-light); }

.mobile-drawer-body {
  flex: 1;
  padding: 8px 0;
  overflow-y: auto;
}

/* Mobile nav accordion */
.mobile-nav-item {
  border-bottom: 1px solid var(--gray-mid);
}
.mobile-nav-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  color: var(--black);
  transition: background var(--transition);
}
.mobile-nav-toggle:hover { background: var(--gray-light); }
.mobile-nav-toggle .arrow {
  width: 10px; height: 10px;
  border-right: 2px solid var(--gray-dark);
  border-bottom: 2px solid var(--gray-dark);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.mobile-nav-toggle.open .arrow {
  transform: rotate(-135deg) translateY(2px);
}
.mobile-sub-menu {
  display: none;
  padding: 4px 0 12px;
  background: var(--gray-light);
}
.mobile-sub-menu.open { display: block; }
.mobile-sub-category {
  padding: 10px 24px 4px;
  font-family: var(--font-heading);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-dark);
}
.mobile-sub-menu a {
  display: block;
  padding: 9px 32px;
  font-size: 14px;
  color: var(--black);
  transition: background var(--transition);
}
.mobile-sub-menu a:hover { background: var(--gray-mid); }

.mobile-nav-plain {
  display: block;
  padding: 16px 24px;
  font-family: var(--font-heading);
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--black);
  border-bottom: 1px solid var(--gray-mid);
  transition: background var(--transition);
}
.mobile-nav-plain:hover { background: var(--gray-light); }

.mobile-drawer-footer {
  padding: 24px;
  border-top: 1px solid var(--gray-mid);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
  margin-top: var(--nav-height);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--black);
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.65;
  transform: scale(1.05);
  animation: heroZoom 12s ease forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.05); }
  to   { transform: scale(1.00); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(0,0,0,0.80) 0%,
    rgba(0,0,0,0.35) 55%,
    transparent 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 80px;
  max-width: 700px;
}
.hero-tag {
  font-family: var(--font-heading);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-tag::before {
  content: '';
  display: inline-block;
  width: 28px; height: 1px;
  background: rgba(255,255,255,0.45);
  flex-shrink: 0;
}
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(52px, 8vw, 108px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  color: var(--white);
  line-height: 0.92;
  margin-bottom: 24px;
}
.hero-subtitle {
  font-family: var(--font-body);
  font-size: 15px;
  color: rgba(255,255,255,0.72);
  margin-bottom: 40px;
  max-width: 420px;
  line-height: 1.75;
}
.hero-cta-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.45);
  font-size: 10px;
  font-family: var(--font-heading);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  animation: bounce 2.2s ease infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn-nike-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  color: var(--black);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  padding: 15px 40px;
  border-radius: 50px;
  border: 2px solid var(--white);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
}
.btn-nike-primary:hover {
  background: transparent;
  color: var(--white);
  transform: translateY(-2px);
}
.btn-nike-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  padding: 15px 40px;
  border-radius: 50px;
  border: 2px solid rgba(255,255,255,0.6);
  cursor: pointer;
  transition: border-color 0.25s ease, transform 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
}
.btn-nike-secondary:hover {
  border-color: var(--white);
  transform: translateY(-2px);
}
.btn-nike-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  padding: 15px 40px;
  border-radius: 50px;
  border: 2px solid var(--black);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
}
.btn-nike-dark:hover {
  background: transparent;
  color: var(--black);
  transform: translateY(-2px);
}

/* ==========================================
   SECTION HEADERS
   ========================================== */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-mid);
  gap: 16px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 4vw, 44px);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--black);
  line-height: 1;
}
.section-link {
  font-family: var(--font-heading);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--black);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: gap 0.25s ease;
}
.section-link:hover { gap: 12px; }

/* ==========================================
   PRODUCT CARD
   ========================================== */
.product-card {
  background: var(--white);
  border: none;
  cursor: pointer;
  position: relative;
  transition: transform 0.3s ease;
}
.product-card:hover { transform: translateY(-6px); }

.product-card-img-wrap {
  position: relative;
  width: 100%;
  padding-top: 100%;
  overflow: hidden;
  background: var(--gray-light);
}
.product-card-img-wrap img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.product-card:hover .product-card-img-wrap img {
  transform: scale(1.09);
}

.product-badge {
  position: absolute;
  top: 12px; left: 12px;
  font-family: var(--font-heading);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  z-index: 2;
}

.product-wishlist {
  position: absolute;
  top: 10px; right: 10px;
  background: var(--white);
  border: none;
  cursor: pointer;
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transform: scale(0.75);
  transition: opacity 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}
.product-card:hover .product-wishlist {
  opacity: 1;
  transform: scale(1);
}
.product-wishlist:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.15); }
.product-wishlist.wishlisted svg { fill: var(--black); }

.product-card-body {
  padding: 14px 0 8px;
}
.product-category {
  font-size: 11px;
  color: var(--gray-dark);
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.product-name {
  font-family: var(--font-heading);
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--black);
  margin-bottom: 6px;
  transition: letter-spacing 0.25s ease;
  line-height: 1.2;
}
.product-card:hover .product-name { letter-spacing: 0.01em; }

.product-colors {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 8px;
}
.color-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 1.5px solid rgba(0,0,0,0.12);
  cursor: pointer;
  transition: transform 0.2s ease;
}
.color-dot:hover { transform: scale(1.25); }

.product-price {
  font-family: var(--font-heading);
  font-size: 15px;
  color: var(--black);
  letter-spacing: 0.02em;
}
.product-price .original {
  color: var(--gray-dark);
  text-decoration: line-through;
  font-size: 13px;
  margin-right: 6px;
}
.product-price .sale { color: #c0392b; }

/* Quick-add */
.quick-add-btn {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(17,17,17,0.92);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  padding: 11px;
  border: none;
  cursor: pointer;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 0.28s ease, transform 0.28s ease;
  backdrop-filter: blur(4px);
}
.product-card:hover .quick-add-btn {
  opacity: 1;
  transform: translateY(0);
}
.quick-add-btn:hover { background: var(--black); }

/* ==========================================
   MARQUEE BANNER
   ========================================== */
.marquee-banner {
  background: var(--black);
  color: var(--white);
  overflow: hidden;
  white-space: nowrap;
  padding: 13px 0;
}
.marquee-inner {
  display: inline-flex;
  animation: marquee 22s linear infinite;
}
.marquee-inner:hover { animation-play-state: paused; }
.marquee-inner span {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 0 36px;
}
.marquee-inner .dot { color: var(--gray-dark); padding: 0; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ==========================================
   CATEGORY STRIP
   ========================================== */
.category-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  overflow: hidden;
}
.cat-tile {
  position: relative;
  height: 500px;
  overflow: hidden;
  cursor: pointer;
}
.cat-tile img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), filter 0.3s ease;
  filter: brightness(0.65);
}
.cat-tile:hover img {
  transform: scale(1.07);
  filter: brightness(0.5);
}
.cat-tile-label {
  position: absolute;
  bottom: 28px; left: 24px;
  z-index: 2;
}
.cat-tile-label h3 {
  color: var(--white);
  font-size: 26px;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

/* ==========================================
   SECTION UTILITIES
   ========================================== */
.section-pad    { padding: 80px 0; }
.section-pad-sm { padding: 48px 0; }

/* ==========================================
   BREADCRUMB
   ========================================== */
.breadcrumb-bar {
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-mid);
}
.breadcrumb-bar .breadcrumb {
  margin: 0;
  font-size: 12px;
  font-family: var(--font-body);
}
.breadcrumb-bar .breadcrumb-item + .breadcrumb-item::before {
  content: '›';
  color: var(--gray-dark);
}
.breadcrumb-bar .breadcrumb-item.active { color: var(--black); font-weight: 500; }
.breadcrumb-bar .breadcrumb-item a {
  color: var(--gray-dark);
  transition: color var(--transition);
}
.breadcrumb-bar .breadcrumb-item a:hover { color: var(--black); }

/* ==========================================
   SCROLL REVEAL
   ========================================== */
.fade-in-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   PRODUCTS PAGE — SIDEBAR
   ========================================== */
.products-page {
  margin-top: var(--nav-height);
  min-height: 100vh;
}
.products-layout {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.sidebar {
  width: 260px;
  flex-shrink: 0;
  padding: 32px 28px 32px 0;
  border-right: 1px solid var(--gray-mid);
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
}
.sidebar::-webkit-scrollbar { width: 3px; }

.sidebar-section {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--gray-mid);
}
.sidebar-section:last-child { border-bottom: none; margin-bottom: 0; }

.sidebar-title {
  font-family: var(--font-heading);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
  color: var(--black);
}

/* Filter chips */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-chip {
  font-family: var(--font-heading);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 7px 16px;
  border: 1px solid var(--gray-mid);
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--white);
  color: var(--black);
  user-select: none;
}
.filter-chip:hover  {
  border-color: var(--black);
  background: var(--gray-light);
}
.filter-chip.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

/* Price range */
.price-range-display {
  font-family: var(--font-heading);
  font-size: 13px;
  color: var(--gray-dark);
  margin-bottom: 10px;
}
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 2px;
  background: var(--gray-mid);
  outline: none;
  border-radius: 2px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--black);
  cursor: pointer;
  transition: transform 0.2s ease;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* Sort bar */
.products-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-bottom: 1px solid var(--gray-mid);
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.products-count {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--gray-dark);
}
.sort-select {
  font-family: var(--font-heading);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid var(--gray-mid);
  border-radius: 50px;
  padding: 9px 20px;
  outline: none;
  cursor: pointer;
  background: var(--white);
  color: var(--black);
  transition: border-color var(--transition);
}
.sort-select:hover, .sort-select:focus { border-color: var(--black); }

.products-main {
  flex: 1;
  padding: 0 0 40px 40px;
  min-width: 0;
}

/* Grid loading */
.grid-loading {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.85);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.grid-loading.active { display: flex; }
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--gray-mid);
  border-top-color: var(--black);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================
   PRODUCT DETAIL PAGE
   ========================================== */
.detail-page { margin-top: var(--nav-height); }

.detail-img-col {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 14px;
  align-items: start;
}
.thumb-rail {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}
.thumb-item {
  width: 78px; height: 78px;
  background: var(--gray-light);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.2s ease;
  flex-shrink: 0;
}
.thumb-item.active, .thumb-item:hover { border-color: var(--black); }
.thumb-item img { width: 100%; height: 100%; object-fit: cover; }

.main-image-wrap {
  position: relative;
  width: 100%;
  padding-top: 100%;
  background: var(--gray-light);
  overflow: hidden;
  cursor: zoom-in;
}
.main-image-wrap img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease, opacity 0.25s ease;
}
.main-image-wrap:hover img { transform: scale(1.04); }

/* Sticky checkout panel */
.checkout-panel {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}
.product-detail-name {
  font-family: var(--font-heading);
  font-size: clamp(26px, 3.5vw, 44px);
  text-transform: uppercase;
  letter-spacing: -0.025em;
  line-height: 1;
  margin-bottom: 8px;
}
.product-detail-category {
  font-size: 13px;
  color: var(--gray-dark);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.product-detail-price {
  font-family: var(--font-heading);
  font-size: 22px;
  margin-bottom: 24px;
}

/* Size selector */
.size-label {
  font-family: var(--font-heading);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
}
.size-label a { color: var(--gray-dark); font-size: 11px; text-decoration: underline; }
.size-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 22px;
}
.size-btn {
  aspect-ratio: 1;
  border: 1px solid var(--gray-mid);
  background: var(--white);
  font-family: var(--font-heading);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex; align-items: center; justify-content: center;
}
.size-btn:hover { border-color: var(--black); background: var(--gray-light); }
.size-btn.selected  { background: var(--black); color: var(--white); border-color: var(--black); }
.size-btn.unavailable {
  opacity: 0.3;
  cursor: not-allowed;
  text-decoration: line-through;
  pointer-events: none;
}

/* Add to cart */
.add-to-cart-btn {
  width: 100%;
  padding: 17px;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: 2px solid transparent;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.25s ease;
  margin-bottom: 12px;
}
.add-to-cart-btn:hover {
  background: #333;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.16);
}

.favourite-btn {
  width: 100%;
  padding: 17px;
  background: transparent;
  color: var(--black);
  font-family: var(--font-heading);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: 2px solid var(--gray-mid);
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.favourite-btn:hover {
  border-color: var(--black);
  background: var(--gray-light);
}

/* Accordion */
.detail-accordion { margin-top: 28px; border-top: 1px solid var(--gray-mid); }
.acc-item { border-bottom: 1px solid var(--gray-mid); }
.acc-toggle {
  width: 100%;
  background: none;
  border: none;
  padding: 16px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--black);
  transition: color var(--transition);
}
.acc-toggle:hover { color: var(--gray-dark); }
.acc-toggle .icon {
  font-size: 22px;
  font-weight: 300;
  line-height: 1;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.acc-body {
  display: none;
  padding: 0 0 20px;
  font-size: 14px;
  color: var(--gray-dark);
  line-height: 1.8;
}

/* ==========================================
   FOOTER
   ========================================== */
.site-footer {
  background: var(--black);
  color: rgba(255,255,255,0.6);
  padding: 64px 0 32px;
  margin-top: 80px;
}
.footer-logo { margin-bottom: 48px; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 56px;
}
.footer-col h6 {
  font-family: var(--font-heading);
  font-size: 11px;
  color: var(--white);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.50);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.3); }
.footer-bottom a { font-size: 12px; color: rgba(255,255,255,0.3); }
.footer-bottom a:hover { color: rgba(255,255,255,0.7); }

/* ==========================================
   BADGE TAGS
   ========================================== */
.tag-new       { background: #58f08a; color: #000; }
.tag-sale      { background: #e74c3c; color: #fff; }
.tag-exclusive { background: #000;    color: #fff; }
.tag-member    { background: #f39c12; color: #000; }

/* ==========================================
   TOAST & NOTIFICATION
   ========================================== */
.toast-notify {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--black);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: 50px;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 9999;
  white-space: nowrap;
  pointer-events: none;
}
.toast-notify.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================
   RESPONSIVE — LARGE (≤1200px)
   ========================================== */
@media (max-width: 1199px) {
  .mega-columns { grid-template-columns: repeat(4, 1fr); gap: 28px; }
  .mega-menu-wrapper { padding: 36px 48px 44px; }
  .hero-content { padding: 0 60px; }
  .sidebar { width: 230px; }
  .products-main { padding-left: 28px; }
  .category-strip { grid-template-columns: repeat(4, 1fr); }
  .cat-tile { height: 400px; }
}

/* ==========================================
   RESPONSIVE — MEDIUM (≤991px)
   ========================================== */
@media (max-width: 991px) {
  /* Show hamburger, hide desktop nav */
  .nav-left { display: none; }
  .hamburger { display: flex; }
  /* Collapse search */
  .nav-search { width: 140px; }
  .nav-search:focus-within { width: 200px; }
  /* Hero */
  .hero-content { padding: 0 40px; max-width: 580px; }
  /* Sidebar hidden on tablet — show mobile filter btn */
  .sidebar { display: none; }
  .products-main { padding-left: 0; }
  /* Category strip 2-col */
  .category-strip { grid-template-columns: repeat(2, 1fr); }
  .cat-tile { height: 360px; }
  /* Detail page */
  .detail-img-col {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .thumb-rail {
    flex-direction: row;
    position: relative;
    top: 0;
    overflow-x: auto;
    padding-bottom: 4px;
    margin-top: 12px;
    order: 2;
  }
  .thumb-item { width: 72px; height: 72px; flex-shrink: 0; }
  .checkout-panel { position: relative; top: 0; }
  /* Footer */
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  /* Size grid */
  .size-grid { grid-template-columns: repeat(5, 1fr); }
}

/* ==========================================
   RESPONSIVE — SMALL (≤767px)
   ========================================== */
@media (max-width: 767px) {
  :root { --nav-height: 56px; }
  /* Navbar */
  .nav-inner { padding: 0 16px; }
  .nav-logo svg { width: 44px; }
  .nav-search { display: none; }  /* hidden on small — use a search icon instead */
  /* Hero */
  .hero-section { min-height: 520px; Height: 90vh; }
  .hero-content { padding: 0 24px; max-width: 100%; }
  .hero-title { font-size: 44px; }
  .hero-subtitle { font-size: 14px; max-width: 320px; }
  .hero-cta-group .btn-nike-primary,
  .hero-cta-group .btn-nike-secondary { font-size: 12px; padding: 13px 28px; }
  /* Category strip */
  .category-strip { grid-template-columns: repeat(2, 1fr); }
  .cat-tile { height: 260px; }
  .cat-tile-label h3 { font-size: 20px; }
  .cat-tile-label .btn-nike-primary { font-size: 11px; padding: 8px 20px; }
  /* Section pad */
  .section-pad { padding: 56px 0; }
  /* Product cards */
  .product-name { font-size: 14px; }
  /* Footer */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .site-footer { padding: 48px 0 28px; margin-top: 56px; }
  /* Detail img */
  .detail-img-col { grid-template-columns: 1fr; }
  .thumb-rail { flex-direction: row; overflow-x: auto; }
}

/* ==========================================
   RESPONSIVE — XS (≤575px)
   ========================================== */
@media (max-width: 575px) {
  /* Hero */
  .hero-content { padding: 0 20px; }
  .hero-title { font-size: 38px; }
  .hero-cta-group { flex-direction: column; }
  .hero-cta-group .btn-nike-primary,
  .hero-cta-group .btn-nike-secondary { width: 100%; text-align: center; justify-content: center; }
  /* Category strip single col */
  .category-strip { grid-template-columns: 1fr 1fr; }
  .cat-tile { height: 220px; }
  /* Products */
  .products-topbar { flex-direction: column; align-items: flex-start; }
  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
  /* Size grid */
  .size-grid { grid-template-columns: repeat(4, 1fr); }
  /* Section header */
  .section-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  /* Btn */
  .btn-nike-primary,
  .btn-nike-secondary,
  .btn-nike-dark { padding: 13px 28px; font-size: 12px; }
}

/* ==========================================
   CART DRAWER — Nike-style slide-in panel
   ========================================== */

/* Shared overlay (reused for both mobile nav + cart) */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.50);
  z-index: 2099;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
  backdrop-filter: blur(2px);
}
.cart-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Drawer panel */
.cart-drawer {
  position: fixed;
  top: 0; right: 0;
  width: 420px;
  max-width: 100vw;
  height: 100vh;
  background: var(--white);
  z-index: 2100;
  transform: translateX(100%);
  transition: transform 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: flex;
  flex-direction: column;
  box-shadow: -8px 0 48px rgba(0,0,0,0.12);
}
.cart-drawer.open {
  transform: translateX(0);
}

/* Header */
.cart-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px 20px;
  border-bottom: 1px solid var(--gray-mid);
  flex-shrink: 0;
}
.cart-drawer-title {
  font-family: var(--font-heading);
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.cart-drawer-title .item-count-pill {
  background: var(--black);
  color: var(--white);
  font-size: 10px;
  font-family: var(--font-heading);
  border-radius: 50px;
  padding: 2px 9px;
  letter-spacing: 0.05em;
  min-width: 22px;
  text-align: center;
}
.cart-close-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--black);
  transition: background var(--transition);
}
.cart-close-btn:hover { background: var(--gray-light); }

/* Free shipping progress bar */
.cart-shipping-bar {
  padding: 14px 24px;
  background: var(--gray-light);
  border-bottom: 1px solid var(--gray-mid);
  flex-shrink: 0;
}
.cart-shipping-bar p {
  font-size: 12px;
  color: var(--black);
  margin-bottom: 8px;
  font-family: var(--font-body);
}
.cart-shipping-bar p strong { font-family: var(--font-heading); }
.shipping-progress-track {
  height: 3px;
  background: var(--gray-mid);
  border-radius: 3px;
  overflow: hidden;
}
.shipping-progress-fill {
  height: 100%;
  background: var(--black);
  border-radius: 3px;
  transition: width 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Scrollable items body */
.cart-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
}
.cart-drawer-body::-webkit-scrollbar { width: 3px; }
.cart-drawer-body::-webkit-scrollbar-thumb { background: var(--gray-mid); }

/* Single cart item row */
.cart-item {
  display: flex;
  gap: 14px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-mid);
  position: relative;
  animation: cartItemIn 0.3s ease forwards;
}
@keyframes cartItemIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
.cart-item-img {
  width: 90px;
  height: 90px;
  background: var(--gray-light);
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
}
.cart-item-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.cart-item:hover .cart-item-img img { transform: scale(1.06); }

.cart-item-details { flex: 1; min-width: 0; }
.cart-item-category {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--gray-dark);
  margin-bottom: 3px;
}
.cart-item-name {
  font-family: var(--font-heading);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cart-item-meta {
  font-size: 12px;
  color: var(--gray-dark);
  margin-bottom: 12px;
}
.cart-item-meta span { margin-right: 8px; }

/* Qty + price row */
.cart-item-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cart-qty-control {
  display: flex;
  align-items: center;
  border: 1px solid var(--gray-mid);
  border-radius: 50px;
  overflow: hidden;
}
.cart-qty-btn {
  width: 30px; height: 30px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  color: var(--black);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition);
  flex-shrink: 0;
}
.cart-qty-btn:hover { background: var(--gray-light); }
.cart-qty-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.cart-qty-val {
  font-family: var(--font-heading);
  font-size: 13px;
  min-width: 28px;
  text-align: center;
  user-select: none;
}
.cart-item-price {
  font-family: var(--font-heading);
  font-size: 15px;
  color: var(--black);
}
.cart-item-price .was {
  font-size: 11px;
  color: var(--gray-dark);
  text-decoration: line-through;
  margin-right: 4px;
}
.cart-item-price .now-sale { color: #c0392b; }

/* Remove button */
.cart-remove-btn {
  position: absolute;
  top: 18px; right: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--gray-dark);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: color var(--transition), background var(--transition);
  opacity: 0;
  transition: opacity 0.2s ease, background 0.2s ease;
}
.cart-item:hover .cart-remove-btn { opacity: 1; }
.cart-remove-btn:hover { color: var(--black); background: var(--gray-light); }

/* Empty cart state */
.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 32px;
  text-align: center;
  height: 100%;
}
.cart-empty svg { color: var(--gray-mid); margin-bottom: 20px; }
.cart-empty h4 {
  font-family: var(--font-heading);
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.cart-empty p {
  font-size: 13px;
  color: var(--gray-dark);
  margin-bottom: 28px;
  line-height: 1.7;
}

/* Footer — totals + checkout */
.cart-drawer-footer {
  padding: 20px 24px 28px;
  border-top: 1px solid var(--gray-mid);
  flex-shrink: 0;
  background: var(--white);
}
.cart-subtotal-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.cart-subtotal-row .label {
  font-size: 13px;
  color: var(--gray-dark);
}
.cart-subtotal-row .value {
  font-family: var(--font-heading);
  font-size: 15px;
}
.cart-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--gray-mid);
  margin-bottom: 20px;
}
.cart-total-row .label {
  font-family: var(--font-heading);
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.cart-total-row .value {
  font-family: var(--font-heading);
  font-size: 20px;
}
.cart-checkout-btn {
  width: 100%;
  padding: 17px;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: 2px solid transparent;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.25s ease;
  margin-bottom: 12px;
  display: block;
  text-align: center;
  text-decoration: none;
}
.cart-checkout-btn:hover {
  background: #333;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.14);
}
.cart-view-bag-link {
  display: block;
  text-align: center;
  font-family: var(--font-heading);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--black);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
.cart-view-bag-link:hover { color: var(--gray-dark); }

/* Trust badges in footer */
.cart-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 11px;
  color: var(--gray-dark);
  margin-top: 14px;
  font-family: var(--font-body);
}

/* Cart icon bump animation */
@keyframes cartBump {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.5) rotate(-10deg); }
  70%  { transform: scale(0.9) rotate(5deg); }
  100% { transform: scale(1) rotate(0deg); }
}
.cart-bump { animation: cartBump 0.45s cubic-bezier(0.36, 0.07, 0.19, 0.97); }

/* Cart item removal animation */
.cart-item.removing {
  animation: cartItemOut 0.28s ease forwards;
}
@keyframes cartItemOut {
  from { opacity: 1; transform: translateX(0); max-height: 140px; }
  to   { opacity: 0; transform: translateX(40px); max-height: 0; padding: 0; margin: 0; }
}

/* Responsive */
@media (max-width: 480px) {
  .cart-drawer { width: 100vw; }
  .cart-item-img { width: 72px; height: 72px; }
}