/* ==========================================================================
   ALPHA INDUSTRIES CARGO PANTS LANDING PAGE - DESIGN SYSTEM
   ========================================================================== */

/* --- Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Allerta+Stencil&family=Inter:wght@300;400;500;600;700&family=Oswald:wght@400;500;600;700&display=swap');

/* --- CSS custom properties (Variables) --- */
:root {
  /* Color Palette */
  --color-black: #0d0d0f;
  --color-dark-grey: #1a1a1e;
  --color-charcoal: #2c2c35;
  --color-grey: #6b6b77;
  --color-light-grey: #f4f4f6;
  --color-border: #e2e2e7;
  --color-white: #ffffff;
  
  /* Brand Accents */
  --color-tactical-green: #3e4f3c; /* Olive HSL */
  --color-tactical-green-hover: #2e3b2c;
  --color-safety-orange: #ff5500; /* Iconic MA-1 Orange */
  --color-safety-orange-hover: #dd4800;
  
  /* Typography */
  --font-display: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Layout & Spacing */
  --container-width: 1200px;
  --header-height: 80px;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-fast: all 0.15s ease;
  
  /* Shadows & Radius */
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.05);
  --shadow-premium: 0 10px 30px rgba(0, 0, 0, 0.08);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-width: 320px;
  width: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-white);
  color: var(--color-charcoal);
  line-height: 1.6;
  min-width: 320px;
  overflow-x: hidden;
  width: 100%;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  outline: none;
}

ul {
  list-style: none;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography Utilities --- */
.title-h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.title-h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  padding-bottom: 12px;
  margin-bottom: 24px;
  color: var(--color-black);
}

.title-h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 3px;
  background-color: var(--color-safety-orange);
}

.title-h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* --- Premium Header (Solid Black as requested) --- */
.header {
  background-color: var(--color-black);
  color: var(--color-white);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  transition: var(--transition-smooth);
}

.header-top {
  background-color: var(--color-dark-grey);
  font-size: 0.75rem;
  padding: 6px 0;
  color: var(--color-grey);
  border-bottom: 1px solid #222226;
}

.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-top-left {
  display: flex;
  gap: 20px;
}

.header-top-right {
  display: flex;
  gap: 15px;
  align-items: center;
}

.social-link:hover {
  color: var(--color-safety-orange);
}

.header-main {
  height: 54px;
}

.header-main .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  font-family: 'Allerta Stencil', sans-serif;
  font-size: 1.9rem;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
}

.logo-accent {
  color: var(--color-white);
}

.nav-list {
  display: flex;
  gap: 30px;
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.95rem;
  text-transform: uppercase;
  font-weight: 500;
  letter-spacing: 1px;
  color: #d1d1d6;
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-safety-orange);
  transition: var(--transition-smooth);
}

.nav-link:hover {
  color: var(--color-white);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-socials {
  display: none;
  align-items: center;
  gap: 8px;
}

.mobile-social-link {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  font-weight: 600;
  color: #d9d9df;
  padding: 4px 8px;
  border: 1px solid #2a2a2f;
  border-radius: 999px;
  transition: var(--transition-fast);
}

.mobile-social-link:hover {
  color: var(--color-white);
  border-color: var(--color-safety-orange);
}

.burger-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid #2a2a2f;
  border-radius: var(--radius-sm);
  color: var(--color-white);
}

.burger-toggle span {
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  transition: var(--transition-fast);
}

.burger-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.burger-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none !important;
}

.mobile-menu-panel {
  background: var(--color-black);
  color: var(--color-white);
}

.mobile-menu-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.mobile-menu-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.mobile-menu-close {
  width: 40px;
  height: 40px;
  color: var(--color-white);
  font-size: 2rem;
  line-height: 1;
}

.mobile-menu-nav,
.mobile-menu-contacts,
.mobile-menu-socials {
  display: flex;
  flex-direction: column;
}

.mobile-menu-link,
.mobile-menu-contact {
  border-top: 1px solid #24242a;
  color: #f2f2f4;
}

.mobile-menu-socials {
  flex-direction: row;
  gap: 10px;
}

.mobile-menu-socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  min-height: 40px;
  border: 1px solid #2a2a2f;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.8px;
}

body.mobile-menu-open {
  overflow: hidden;
}

/* Spacer for fixed header */
.header-spacer {
  height: calc(var(--header-height) + 10px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  height: 80vh;
  min-height: 550px;
  background-color: var(--color-black);
  color: var(--color-white);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
  transform: scale(1.05);
  transition: transform 10s ease;
}

.hero:hover .hero-bg {
  transform: scale(1.0);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: transparent;
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-content {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  min-width: 0;
}

.hero-tag {
  background-color: var(--color-safety-orange);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 0.8rem;
  text-transform: uppercase;
  font-weight: 600;
  padding: 6px 12px;
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
}

.hero-desc {
  font-size: 1.1rem;
  color: #e5e5ea;
  font-weight: 300;
}

.btn-primary {
  background-color: var(--color-safety-orange);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 15px rgba(255, 85, 0, 0.4);
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-primary:hover {
  background-color: var(--color-safety-orange-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 85, 0, 0.6);
}

.btn-secondary {
  border: 2px solid var(--color-white);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 12px 34px;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-black);
}

.hero-actions-row {
  display: flex;
  gap: 15px;
  margin-top: 10px;
}

/* --- Brand Info / Intro Section --- */
.brand-intro {
  padding: 80px 0;
  background-color: var(--color-white);
}

.intro-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.intro-text-block {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.intro-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--color-tactical-green);
}

.intro-badge svg {
  width: 24px;
  height: 24px;
  fill: var(--color-safety-orange);
}

.intro-desc {
  font-size: 1.05rem;
  color: var(--color-grey);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.intro-card {
  background-color: var(--color-light-grey);
  padding: 24px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-tactical-green);
  transition: var(--transition-smooth);
}

.intro-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-subtle);
}

.intro-card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-black);
}

.intro-card-desc {
  font-size: 0.9rem;
  color: var(--color-grey);
}

/* --- Promo Banner / Category Quick Links --- */
.promo-categories {
  background-color: var(--color-light-grey);
  padding: 60px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.promo-header {
  margin-bottom: 35px;
}

.promo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.promo-card {
  position: relative;
  height: 280px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
}

.promo-card-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.promo-card:hover .promo-card-bg {
  transform: scale(1.08);
}

.promo-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.2) 60%, rgba(0, 0, 0, 0) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  z-index: 1;
}

.promo-card-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-white);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
}

.promo-card-meta {
  font-family: var(--font-display);
  color: #f0f0f2;
  font-size: 1rem;
  margin-top: 6px;
}

.promo-card-link {
  font-size: 0.85rem;
  color: var(--color-safety-orange);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
  margin-top: 5px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.promo-card-link::after {
  content: '→';
  transition: transform 0.2s ease;
}

.promo-card:hover .promo-card-link::after {
  transform: translateX(4px);
}

.promo-benefits {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 18px;
  margin-top: 28px;
  width: 100%;
}

.promo-benefit-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-width: 0;
  padding: 20px 16px;
  box-shadow: var(--shadow-subtle);
  width: 100%;
}

.promo-benefit-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-black);
  color: var(--color-white);
  font-weight: 700;
  margin-bottom: 10px;
}

.promo-benefit-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--color-black);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 6px;
}

.promo-benefit-desc {
  font-size: 0.88rem;
  color: var(--color-grey);
  line-height: 1.45;
}

/* --- Catalog Section --- */
.catalog {
  padding: 80px 0;
  background-color: var(--color-white);
}

.catalog-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 50px;
}

.products-price-range {
  margin-top: 12px;
  color: var(--color-black);
  font-size: 0.95rem;
  font-weight: 600;
}

.catalog-h2::after {
  left: 50%;
  transform: translateX(-50%);
}

.tab-nav {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 20px;
  background-color: var(--color-light-grey);
  padding: 6px;
  border-radius: 30px;
  box-shadow: inset 0 2px 5px rgba(0,0,0,0.05);
}

.tab-btn {
  font-family: var(--font-display);
  font-size: 1rem;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 10px 24px;
  border-radius: 20px;
  color: var(--color-grey);
  transition: var(--transition-smooth);
}

.tab-btn:hover {
  color: var(--color-black);
}

.tab-btn.active {
  background-color: var(--color-black);
  color: var(--color-white);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.catalog-panel {
  display: none;
  animation: fadeIn 0.5s ease;
}

.catalog-panel.active {
  display: block;
}

.sub-tabs {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 15px;
}

.sub-tab-btn {
  font-family: var(--font-display);
  font-size: 1.1rem;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-grey);
  padding: 5px 10px;
  position: relative;
}

.sub-tab-btn.active {
  color: var(--color-tactical-green);
  font-weight: 700;
}

.sub-tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -16px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-tactical-green);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 30px;
}

/* Product Card */
.product-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
  border: 1px solid #f0f0f4;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-premium);
  border-color: var(--color-border);
}

.product-img-wrapper {
  position: relative;
  padding-top: 120%; /* Visual aspect ratio */
  background-color: var(--color-light-grey);
  overflow: hidden;
}

.product-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-img {
  transform: scale(1.05);
}

.badge-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  color: var(--color-white);
  z-index: 2;
}

.badge-tag.new {
  background-color: var(--color-tactical-green);
}

.badge-tag.hot {
  background-color: var(--color-safety-orange);
}

.badge-tag.original {
  background-color: var(--color-black);
}

.product-colors {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  gap: 6px;
  background-color: rgba(255, 255, 255, 0.85);
  padding: 4px 8px;
  border-radius: 12px;
  backdrop-filter: blur(4px);
  z-index: 2;
}

.color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: transform 0.15s ease;
}

.color-dot:hover, .color-dot.active {
  transform: scale(1.3);
  box-shadow: 0 0 0 1.5px var(--color-white), 0 0 0 2.5px var(--color-black);
}

.color-dot.olive { background-color: #4b5340; }
.color-dot.khaki { background-color: #c3b091; }
.color-dot.black { background-color: #1c1c1c; }
.color-dot.grey { background-color: #5c6266; }

.product-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  text-transform: uppercase;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 8px;
  color: var(--color-black);
  height: auto; /* Display full title */
  overflow: visible;
  display: block;
  overflow-wrap: anywhere;
}

.product-meta {
  font-size: 0.8rem;
  color: var(--color-grey);
  margin-bottom: 15px;
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  border-top: 1px solid var(--color-light-grey);
  padding-top: 15px;
}

.product-price {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-black);
  white-space: nowrap; /* Keep price on single line */
}

.btn-buy {
  background-color: var(--color-black);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 0.9rem;
  text-transform: uppercase;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.btn-buy:hover {
  background-color: var(--color-safety-orange);
  box-shadow: 0 4px 10px rgba(255, 85, 0, 0.3);
}

.product-card-buttons {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn-buy-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  text-transform: uppercase;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  color: var(--color-charcoal);
  height: 38px;
  box-sizing: border-box;
}

.btn-buy-link:hover {
  border-color: var(--color-black);
  background-color: var(--color-light-grey);
  color: var(--color-black);
}

/* --- Size Calculator Section --- */
.size-calculator {
  background-color: var(--color-light-grey);
  padding: 80px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.calc-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.calc-text {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.calc-title::after {
  background-color: var(--color-tactical-green);
}

.calc-box {
  background-color: var(--color-white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-premium);
  border: 1px solid var(--color-border);
}

.calc-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.input-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-black);
  letter-spacing: 0.5px;
}

.input-field {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition-fast);
  background-color: #fafafa;
}

.input-field:focus {
  border-color: var(--color-tactical-green);
  outline: none;
  background-color: var(--color-white);
  box-shadow: 0 0 0 3px rgba(62, 79, 60, 0.15);
}

.btn-calc {
  background-color: var(--color-tactical-green);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
}

.btn-calc:hover {
  background-color: var(--color-tactical-green-hover);
}

.calc-result {
  margin-top: 25px;
  padding-top: 25px;
  border-top: 1px solid var(--color-border);
  display: none;
  text-align: center;
  animation: fadeIn 0.4s ease;
}

.calc-result.active {
  display: block;
}

.result-heading {
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--color-grey);
  font-weight: 600;
  letter-spacing: 1px;
}

.result-value {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-safety-orange);
  line-height: 1;
  margin: 10px 0;
}

.result-fit {
  font-size: 0.95rem;
  color: var(--color-black);
  font-weight: 500;
}

.result-fit-accent {
  color: var(--color-tactical-green);
  font-weight: 700;
}

/* --- Lifestyle Gallery --- */
.lifestyle {
  padding: 80px 0;
  background-color: var(--color-white);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
  margin-top: 40px;
}

.gallery-item {
  position: relative;
  padding-top: 130%;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
}

.gallery-item img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.gallery-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(62, 79, 60, 0.4);
  opacity: 0;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.gallery-zoom-icon {
  color: var(--color-white);
  border: 2px solid var(--color-white);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  transform: scale(0.8);
  transition: var(--transition-smooth);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-item:hover .gallery-zoom-icon {
  transform: scale(1);
}

/* --- Delivery & FAQ (Accordion) --- */
.delivery-faq {
  padding: 80px 0;
  background-color: var(--color-light-grey);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.faq-wrapper {
  max-width: 800px;
  margin: 40px auto 0 auto;
}

.accordion-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 15px;
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
}

.accordion-item:hover {
  box-shadow: var(--shadow-premium);
  border-color: var(--color-grey);
}

.accordion-header {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.accordion-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-black);
}

.accordion-icon {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-tactical-green);
  transition: transform 0.3s ease;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0, 1, 0, 1);
  background-color: #fafafa;
}

.accordion-content-inner {
  padding: 0 24px 24px 24px;
  font-size: 0.95rem;
  color: var(--color-charcoal);
  border-top: 1px solid #f0f0f4;
  padding-top: 20px;
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

.accordion-item.active .accordion-content {
  max-height: 500px; /* Large enough value */
  transition: max-height 0.4s cubic-bezier(1, 0, 1, 0);
}

/* --- FAQ Section --- */
.faq-section {
  padding: 80px 0;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* --- Stores & Contacts Section --- */
.contacts {
  padding: 80px 0;
  background-color: var(--color-white);
}

.stores-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.stores-grid-2 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.store-card {
  background-color: var(--color-light-grey);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  border: 1px solid var(--color-border);
}

.store-img {
  height: 180px;
  width: 100%;
  object-fit: cover;
}

.store-img-leninsky {
  object-position: center 72%;
}

.store-info {
  padding: 24px;
}

.store-city {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-safety-orange);
  letter-spacing: 1px;
  margin-bottom: 5px;
}

.store-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-black);
  margin-bottom: 12px;
}

.store-status {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  margin: 4px 0 16px 0;
  letter-spacing: 0.5px;
}

.store-status.normal {
  background-color: var(--color-black);
  color: var(--color-white);
}

.store-status.pvz {
  background-color: var(--color-safety-orange);
  color: var(--color-white);
}

.store-detail {
  font-size: 0.9rem;
  color: var(--color-charcoal);
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  overflow-wrap: anywhere;
}

.store-detail svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  fill: var(--color-tactical-green);
}

.store-map-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-tactical-green);
  margin-top: 15px;
}

.store-map-link:hover {
  color: var(--color-safety-orange);
}

/* --- Image Lightbox --- */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 3000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  display: flex;
  opacity: 1;
}

.lightbox-content {
  max-width: 80%;
  max-height: 80%;
  position: relative;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.lightbox-img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 80vh;
}

.btn-close-lightbox {
  position: absolute;
  top: 20px;
  right: 20px;
  color: var(--color-white);
  font-size: 2rem;
  z-index: 3100;
}

.back-to-top {
  position: fixed;
  right: 16px;
  bottom: 18px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-black);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  z-index: 900;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  line-height: 1;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--color-safety-orange);
}

/* --- Footer --- */
.footer {
  background-color: var(--color-black);
  color: #a1a1aa;
  padding: 60px 0 30px 0;
  border-top: 1px solid #222226;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  color: var(--color-white);
  margin-bottom: 15px;
}

.footer-about {
  line-height: 1.7;
}

.footer-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-white);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link:hover {
  color: var(--color-white);
  padding-left: 4px;
}

.footer-contact-item {
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
}

.footer-contact-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--color-grey);
  margin-bottom: 2px;
}

.footer-contact-value {
  color: var(--color-white);
  font-weight: 500;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid #222226;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-grey);
}

/* --- Animation Utilities --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Responsive Adjustments --- */
/* Tablet: preserve scanning density without squeezing cards */
@media (max-width: 1024px) {
  :root {
    --container-width: 920px;
  }

  .intro-wrapper,
  .calc-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .promo-grid,
  .stores-grid,
  .stores-grid-2,
  .promo-benefits,
  .gallery-grid,
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .catalog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

/* Mobile: single-column product flow, sticky-safe header, horizontal chips */
@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .container {
    padding-inline: 18px;
  }

  .header-top,
  .nav-list,
  .mobile-socials {
    display: none;
  }

  .header-main {
    height: var(--header-height);
  }

  .header-main .container {
    min-width: 0;
    justify-content: space-between;
  }

  .logo img {
    height: 28px !important;
    max-width: min(170px, 70vw);
  }

  .burger-toggle {
    display: inline-flex;
  }

  .mobile-menu {
    display: block !important;
    position: fixed;
    inset: 0;
    z-index: 1200;
    background: rgba(0, 0, 0, 0.62);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }

  .mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-menu-panel {
    width: min(86vw, 360px);
    height: 100%;
    margin-left: auto;
    padding: 22px;
    box-shadow: -16px 0 36px rgba(0, 0, 0, 0.35);
    transform: translateX(100%);
    transition: transform 0.25s ease;
    overflow-y: auto;
  }

  .mobile-menu.open .mobile-menu-panel {
    transform: translateX(0);
  }

  .mobile-menu-head {
    margin-bottom: 24px;
  }

  .mobile-menu-nav {
    gap: 0;
    margin-bottom: 24px;
  }

  .mobile-menu-link {
    padding: 15px 0;
    font-family: var(--font-display);
    font-size: 1.08rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
  }

  .mobile-menu-contacts {
    gap: 0;
    margin-bottom: 24px;
  }

  .mobile-menu-contact {
    padding: 13px 0;
    font-size: 0.95rem;
    overflow-wrap: anywhere;
  }

  .brand-intro,
  .catalog,
  .size-calculator,
  .lifestyle,
  .delivery-faq,
  .faq-section,
  .contacts {
    padding: 64px 0;
  }

  .hero {
    height: auto;
    min-height: 560px;
    padding: 72px 0 56px;
  }

  .hero-overlay {
    background: transparent;
  }

  .hero-content {
    max-width: 100%;
    gap: 18px;
  }

  .title-h1 {
    font-size: clamp(2rem, 10vw, 3rem);
    line-height: 1.06;
    letter-spacing: 0.5px;
  }

  .title-h2 {
    font-size: clamp(1.55rem, 8vw, 2.1rem);
    line-height: 1.15;
  }

  .hero-desc,
  .intro-desc {
    font-size: 1rem;
  }

  .hero-actions-row {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .btn-primary,
  .btn-secondary,
  .btn-calc {
    width: 100%;
    min-height: 48px;
    justify-content: center;
    text-align: center;
  }

  .intro-grid,
  .promo-grid,
  .promo-benefits,
  .calc-wrapper,
  .input-group-row,
  .stores-grid,
  .stores-grid-2,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .intro-wrapper,
  .calc-wrapper {
    gap: 32px;
  }

  .catalog-header {
    margin-bottom: 32px;
  }

  .sub-tabs {
    justify-content: flex-start;
    gap: 10px;
    margin-inline: -18px;
    padding: 0 18px 14px;
    overflow-x: auto;
    border-bottom: 1px solid var(--color-border);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .sub-tabs::-webkit-scrollbar {
    display: none;
  }

  .sub-tab-btn {
    flex: 0 0 auto;
    min-height: 42px;
    padding: 8px 14px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-white);
    font-size: 0.9rem;
    white-space: nowrap;
  }

  .sub-tab-btn.active {
    background: var(--color-black);
    border-color: var(--color-black);
    color: var(--color-white);
  }

  .sub-tab-btn.active::after {
    display: none;
  }

  .catalog-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .product-card {
    border-radius: 12px;
  }

  .product-img-wrapper {
    padding-top: 112%;
  }

  .product-info,
  .intro-card,
  .store-info {
    padding: 18px;
  }

  .product-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .product-card-buttons,
  .btn-buy-link {
    width: 100%;
  }

  .btn-buy-link {
    min-height: 44px;
    justify-content: center;
  }

  .product-colors {
    left: auto;
    right: 12px;
    width: auto;
    max-width: calc(100% - 24px);
    justify-content: flex-end;
    flex-wrap: wrap;
  }

  .color-dot {
    width: 14px;
    height: 14px;
  }

  .color-dot:hover,
  .color-dot.active {
    transform: scale(1.15);
  }

  .calc-box {
    padding: 24px;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .accordion-header {
    align-items: flex-start;
    gap: 12px;
    padding: 18px;
  }

  .accordion-title {
    font-size: 1rem;
    line-height: 1.25;
  }

  .accordion-icon {
    flex-shrink: 0;
  }

  .accordion-content-inner {
    padding: 16px 18px 18px;
  }

  .footer-grid {
    gap: 28px;
  }

  .back-to-top {
    display: inline-flex;
  }
}

/* Phone: full-width CTAs and one-column merchandising */
@media (max-width: 480px) {
  .container {
    padding-inline: 14px;
  }

  .brand-intro,
  .promo-categories,
  .catalog,
  .size-calculator,
  .lifestyle,
  .delivery-faq,
  .faq-section,
  .contacts {
    padding: 52px 0;
  }

  .hero {
    min-height: 520px;
    padding: 56px 0 46px;
  }

  .hero-tag {
    font-size: 0.72rem;
    letter-spacing: 0.6px;
  }

  .title-h1 {
    font-size: clamp(1.78rem, 9.5vw, 2.45rem);
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .btn-primary,
  .btn-secondary {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .promo-card {
    height: 230px;
  }

  .promo-card-overlay {
    padding: 18px;
  }

  .promo-card-title {
    font-size: 1.25rem;
  }

  .catalog-grid,
  .promo-grid,
  .promo-benefits,
  .intro-grid,
  .gallery-grid,
  .stores-grid,
  .stores-grid-2 {
    grid-template-columns: 1fr;
  }

  .product-title {
    font-size: 1.05rem;
  }

  .product-price {
    font-size: 1.25rem;
  }

  .calc-box {
    padding: 20px;
    border-radius: 12px;
  }

  .result-value {
    font-size: 2.65rem;
  }

  .store-img {
    height: 160px;
  }

  .lightbox-content {
    max-width: 94%;
    max-height: 82%;
  }

  .btn-close-lightbox {
    top: 12px;
    right: 12px;
  }

  .back-to-top {
    right: 14px;
    bottom: 14px;
    width: 46px;
    height: 46px;
  }
}

/* Small phones down to 320px */
@media (max-width: 360px) {
  .container {
    padding-inline: 10px;
  }

  .logo img {
    height: 24px !important;
    max-width: 140px;
  }

  .title-h1 {
    font-size: clamp(1.55rem, 9vw, 2rem);
    letter-spacing: 0.2px;
  }

  .title-h2 {
    font-size: 1.5rem;
  }

  .sub-tabs {
    margin-inline: -10px;
    padding-inline: 10px;
  }

  .sub-tab-btn {
    font-size: 0.8rem;
    padding: 7px 10px;
  }

  .product-info,
  .intro-card,
  .store-info,
  .accordion-header {
    padding: 16px;
  }

  .calc-box {
    padding: 16px;
  }
}

@media (max-width: 320px) {
  .container {
    padding-inline: 8px;
  }

  .mobile-menu-panel {
    width: 92vw;
    padding: 18px;
  }

  .hero {
    min-height: 500px;
  }

  .sub-tabs {
    margin-inline: -8px;
    padding-inline: 8px;
  }
}