/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-primary-light: #60a5fa;
  --color-dark: #0d1117;
  --color-dark-alt: #161b22;
  --color-dark-card: #1c2333;
  --color-dark-border: #2d3548;
  --color-bg: #ffffff;
  --color-bg-light: #f0f4f8;
  --color-bg-alt: #f8fafc;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
  --shadow-card: 0 1px 3px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.04);
  --transition: .25s cubic-bezier(.4,0,.2,1);
  --container: 1200px;
  --header-h: 72px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

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

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(13,17,23,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  height: var(--header-h);
  transition: var(--transition);
}

.header--scrolled {
  background: rgba(13,17,23,.95);
  box-shadow: 0 4px 20px rgba(0,0,0,.2);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: #fff;
  flex-shrink: 0;
}

.logo__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  color: #fff;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,.7);
  transition: var(--transition);
  white-space: nowrap;
}

.nav__link:hover {
  color: #fff;
  background: rgba(255,255,255,.08);
}

.nav__link--active {
  color: #fff;
  background: rgba(255,255,255,.12);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

.burger span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

.burger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn--sm { padding: 8px 18px; font-size: 13px; }

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(59,130,246,.35);
}

.btn--secondary {
  background: var(--color-bg-light);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--secondary:hover {
  background: var(--color-border);
}

.btn--white {
  background: #fff;
  color: var(--color-dark);
}
.btn--white:hover {
  background: #f0f4f8;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(255,255,255,.2);
}

.btn--outline {
  border-color: rgba(255,255,255,.3);
  color: #fff;
}
.btn--outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,.08);
}

.btn--outline-white {
  border-color: rgba(255,255,255,.4);
  color: #fff;
}
.btn--outline-white:hover {
  background: rgba(255,255,255,.1);
  border-color: #fff;
}

.btn--full { width: 100%; }

.link--accent {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  white-space: nowrap;
}
.link--accent:hover { color: var(--color-primary-dark); }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0d1117 0%, #131a27 40%, #0f1923 100%);
  padding: calc(var(--header-h) + 60px) 0 80px;
  overflow: hidden;
}

.hero__bg-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.25;
  z-index: 0;
  pointer-events: none;
}

.hero__bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,.12) 0%, transparent 70%);
  right: -100px;
  top: -100px;
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.8);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero__title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: 17px;
  color: rgba(255,255,255,.6);
  margin-bottom: 32px;
  max-width: 500px;
  line-height: 1.6;
}

.hero__buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
}

.hero__card-header {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: rgba(255,255,255,.5);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero__card-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero__card-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  color: rgba(255,255,255,.85);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}

.hero__card-item:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(59,130,246,.3);
}

/* ===== SECTIONS ===== */
.section {
  padding: 80px 0;
}

.section--light {
  background: var(--color-bg-light);
}

.section__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.section__title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.section__subtitle {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 500px;
}

/* ===== STEPS ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.step-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.step-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.step-card__num {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-bg-light);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.step-card__text {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

/* ===== BENEFITS ===== */
.benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.benefit-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}

.benefit-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.benefit-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.benefit-card__icon--blue { background: #eff6ff; color: #3b82f6; }
.benefit-card__icon--cyan { background: #ecfeff; color: #06b6d4; }
.benefit-card__icon--green { background: #f0fdf4; color: #22c55e; }
.benefit-card__icon--purple { background: #faf5ff; color: #a855f7; }
.benefit-card__icon--orange { background: #fff7ed; color: #f97316; }
.benefit-card__icon--teal { background: #f0fdfa; color: #14b8a6; }

.benefit-card__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.benefit-card__text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ===== CATEGORIES ===== */
.categories {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 28px 16px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.category-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.category-card__icon {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  color: var(--color-primary);
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(59,130,246,.1);
}

.category-card:nth-child(2) .category-card__icon { background: linear-gradient(135deg, #f0fdf4, #dcfce7); color: #22c55e; box-shadow: 0 4px 12px rgba(34,197,94,.1); }
.category-card:nth-child(3) .category-card__icon { background: linear-gradient(135deg, #faf5ff, #f3e8ff); color: #a855f7; box-shadow: 0 4px 12px rgba(168,85,247,.1); }
.category-card:nth-child(4) .category-card__icon { background: linear-gradient(135deg, #fefce8, #fef9c3); color: #eab308; box-shadow: 0 4px 12px rgba(234,179,8,.1); }
.category-card:nth-child(5) .category-card__icon { background: linear-gradient(135deg, #fef2f2, #fecaca); color: #ef4444; box-shadow: 0 4px 12px rgba(239,68,68,.1); }
.category-card:nth-child(6) .category-card__icon { background: linear-gradient(135deg, #ecfeff, #cffafe); color: #06b6d4; box-shadow: 0 4px 12px rgba(6,182,212,.1); }
.category-card:nth-child(7) .category-card__icon { background: linear-gradient(135deg, #fff7ed, #ffedd5); color: #f97316; box-shadow: 0 4px 12px rgba(249,115,22,.1); }
.category-card:nth-child(8) .category-card__icon { background: linear-gradient(135deg, #f5f3ff, #ede9fe); color: #7c3aed; box-shadow: 0 4px 12px rgba(124,58,237,.1); }

.category-card:hover .category-card__icon {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(59,130,246,.2);
}

.category-card__name {
  font-size: 15px;
  font-weight: 600;
}

.category-card__count {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ===== CATALOG ===== */
.catalog-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding-bottom: 8px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  background: var(--color-bg-light);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.filter-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.filter-btn.active {
  background: var(--color-dark);
  color: #fff;
  border-color: var(--color-dark);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.product-card__image {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.product-card__image::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: .08;
  transition: var(--transition);
}

.product-card:hover .product-card__image::before {
  opacity: .12;
}

.product-card__brand-logo {
  font-size: 28px;
  font-weight: 800;
  opacity: .15;
  letter-spacing: -1px;
  position: absolute;
  bottom: 12px;
  right: 16px;
}

.product-card__icon {
  position: relative;
  z-index: 1;
  color: rgba(0,0,0,.5);
  opacity: .7;
}

.product-card__img {
  position: relative;
  z-index: 1;
  max-height: 140px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.product-card[data-brand="apple"] .product-card__image { background: linear-gradient(135deg, #f5f5f7, #e8e8ed); }
.product-card[data-brand="apple"] .product-card__brand-logo { color: #1d1d1f; }

.product-card[data-brand="samsung"] .product-card__image { background: linear-gradient(135deg, #e8f0fe, #d6e4ff); }
.product-card[data-brand="samsung"] .product-card__brand-logo { color: #1428a0; }

.product-card[data-brand="dyson"] .product-card__image { background: linear-gradient(135deg, #f3e8ff, #ede0ff); }
.product-card[data-brand="dyson"] .product-card__brand-logo { color: #6d28d9; }

.product-card[data-brand="sony"] .product-card__image { background: linear-gradient(135deg, #e0e7ff, #d4dcf7); }
.product-card[data-brand="sony"] .product-card__brand-logo { color: #003087; }

.product-card[data-brand="microsoft"] .product-card__image { background: linear-gradient(135deg, #e6f9ef, #d1f5e0); }
.product-card[data-brand="microsoft"] .product-card__brand-logo { color: #107c10; }

.product-card[data-brand="yandex"] .product-card__image { background: linear-gradient(135deg, #fff3e0, #ffe8cc); }
.product-card[data-brand="yandex"] .product-card__brand-logo { color: #fc3f1d; }

.product-card[data-brand="meta"] .product-card__image { background: linear-gradient(135deg, #e3f2fd, #c8e6fd); }
.product-card[data-brand="meta"] .product-card__brand-logo { color: #0668E1; }

.product-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  z-index: 2;
  background: var(--color-primary);
  color: #fff;
}

.product-card__body {
  padding: 16px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.product-card__category {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 6px;
}

.product-card__name {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__specs {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.product-card__action {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  transition: var(--transition);
}

.product-card:hover .product-card__action {
  color: var(--color-primary-dark);
}

.product-card__action svg {
  transition: var(--transition);
}

.product-card:hover .product-card__action svg {
  transform: translateX(3px);
}

.catalog-more {
  text-align: center;
  margin-top: 32px;
}

/* ===== CATALOG PAGE (catalog.html) ===== */
.catalog-hero {
  background: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #1a2332 100%);
  padding: calc(var(--header-h) + 48px) 0 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.catalog-hero__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin: 0;
}

.catalog-hero__subtitle {
  margin-top: 12px;
  font-size: 15px;
  color: rgba(255,255,255,.55);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.catalog-page__layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: start;
}

.filter-sidebar__backdrop {
  display: none;
}

.filter-sidebar__toggle {
  display: none;
  width: 100%;
  margin-bottom: 16px;
}

.filter-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  max-height: calc(100vh - var(--header-h) - 32px);
  overflow-y: auto;
}

.filter-sidebar__title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.filter-sidebar__group {
  margin-bottom: 20px;
}

.filter-sidebar__group:last-child {
  margin-bottom: 0;
}

.filter-sidebar__search {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
}

.filter-sidebar__search:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}

.filter-sidebar__row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--color-text);
  cursor: pointer;
}

.filter-sidebar__row input {
  margin-top: 3px;
  flex-shrink: 0;
  accent-color: var(--color-primary);
}

.filter-sidebar__sub {
  margin-left: 22px;
  margin-top: 4px;
  padding-left: 8px;
  border-left: 2px solid var(--color-border-light);
}

.filter-sidebar__price-row {
  display: flex;
  gap: 8px;
}

.filter-sidebar__price-row input {
  width: 100%;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
}

.filter-sidebar__price-row input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.catalog-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.catalog-toolbar__count {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.catalog-toolbar__count strong {
  color: var(--color-text);
  font-weight: 600;
}

.catalog-sort {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 14px;
  font-family: inherit;
  font-weight: 500;
  background: #fff;
  cursor: pointer;
  min-width: 200px;
}

.catalog-sort:focus {
  outline: none;
  border-color: var(--color-primary);
}

.product-card__price {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  margin-top: 4px;
}

.product-card__price--muted {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.modal__price {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.modal__price--muted {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.filter-sidebar__close {
  width: 100%;
  margin-bottom: 16px;
}

@media (min-width: 901px) {
  .filter-sidebar__close {
    display: none !important;
  }
}

@media (max-width: 900px) {
  .catalog-page__layout {
    grid-template-columns: 1fr;
  }

  .filter-sidebar__toggle {
    display: inline-flex;
  }

  .filter-sidebar__close {
    display: inline-flex;
  }

  .filter-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(320px, 88vw);
    max-height: none;
    z-index: 150;
    transform: translateX(-100%);
    transition: transform var(--transition);
    border-radius: 0;
    border-right: 1px solid var(--color-border);
    padding-top: calc(var(--header-h) + 16px);
  }

  .filter-sidebar.is-open {
    transform: translateX(0);
  }

  .filter-sidebar__backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    z-index: 140;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .filter-sidebar__backdrop.is-visible {
    opacity: 1;
    visibility: visible;
  }
}

/* ===== FAQ ===== */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.faq-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-card:hover {
  border-color: var(--color-primary-light);
}

.faq-card__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 700;
  text-align: left;
  transition: var(--transition);
}

.faq-card__question:hover {
  color: var(--color-primary);
}

.faq-card__chevron {
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--color-text-muted);
}

.faq-card.active .faq-card__chevron {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-card__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s cubic-bezier(.4,0,.2,1), padding .35s cubic-bezier(.4,0,.2,1);
}

.faq-card.active .faq-card__answer {
  max-height: 200px;
}

.faq-card__answer p {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
}

.cta {
  position: relative;
  background: linear-gradient(135deg, #0d1117, #1a1f3a, #0f1923);
  border-radius: var(--radius-xl);
  padding: 64px;
  overflow: hidden;
}

.cta__content {
  position: relative;
  z-index: 1;
  max-width: 520px;
}

.cta__title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta__text {
  font-size: 15px;
  color: rgba(255,255,255,.6);
  line-height: 1.6;
  margin-bottom: 28px;
}

.cta__buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.cta__decoration {
  position: absolute;
  right: -40px;
  top: -40px;
  width: 400px;
  height: 400px;
  pointer-events: none;
}

.cta__circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(59,130,246,.2);
}

.cta__circle--1 {
  width: 300px;
  height: 300px;
  right: 20px;
  top: 20px;
  animation: pulse 4s ease-in-out infinite;
}

.cta__circle--2 {
  width: 200px;
  height: 200px;
  right: 70px;
  top: 70px;
  border-color: rgba(59,130,246,.1);
  animation: pulse 4s ease-in-out infinite .5s;
}

@keyframes pulse {
  0%, 100% { opacity: .5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,.7);
  padding: 64px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.logo--footer { margin-bottom: 16px; }

.footer__desc {
  font-size: 14px;
  line-height: 1.6;
  max-width: 280px;
}

.footer__heading {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.footer__link {
  display: block;
  font-size: 14px;
  padding: 4px 0;
  color: rgba(255,255,255,.5);
  transition: var(--transition);
}

.footer__link:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 13px;
  color: rgba(255,255,255,.35);
  flex-wrap: wrap;
}

.footer__legal {
  display: flex;
  gap: 24px;
}

.footer__legal a {
  color: rgba(255,255,255,.35);
  transition: var(--transition);
}

.footer__legal a:hover {
  color: rgba(255,255,255,.7);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  overflow: hidden;
  transform: translateY(20px) scale(.97);
  transition: var(--transition);
  box-shadow: 0 25px 60px rgba(0,0,0,.2);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.1);
  color: rgba(0,0,0,.5);
  z-index: 2;
  transition: var(--transition);
}

.modal__close:hover {
  background: rgba(0,0,0,.2);
  color: rgba(0,0,0,.8);
}

.modal__image {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.modal__body {
  padding: 24px;
}

.modal__badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 8px;
}

.modal__title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.modal__specs {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.modal__info {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
  padding: 16px;
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
}

.modal__info-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.modal__info-item svg { color: var(--color-primary); flex-shrink: 0; }

/* ===== SCROLL TO TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

/* ===== REVEAL ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s cubic-bezier(.4,0,.2,1), transform .6s cubic-bezier(.4,0,.2,1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__card { max-width: 420px; }

  .steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .catalog-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(13,17,23,.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-bottom: 1px solid rgba(255,255,255,.06);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    padding: 12px 16px;
    width: 100%;
    border-radius: var(--radius-sm);
  }

  .burger { display: flex; }

  .header__actions .btn { display: none; }

  .hero {
    padding: calc(var(--header-h) + 40px) 0 60px;
    min-height: auto;
  }

  .hero__title { font-size: 32px; }
  .hero__subtitle { font-size: 15px; }

  .hero__buttons {
    flex-direction: column;
  }

  .hero__buttons .btn { width: 100%; }

  .section { padding: 60px 0; }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .benefits {
    grid-template-columns: repeat(2, 1fr);
  }

  .categories {
    grid-template-columns: repeat(2, 1fr);
  }

  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .cta { padding: 40px 24px; }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section__header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }

  .hero__title { font-size: 28px; }

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

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

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

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

  .catalog-filters {
    gap: 6px;
  }

  .filter-btn {
    padding: 6px 14px;
    font-size: 12px;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer__legal {
    flex-direction: column;
    gap: 8px;
  }

  .modal {
    margin: 0 8px;
  }
}

/* ===== LEGAL PAGES ===== */
.legal-page {
  padding: calc(var(--header-h) + 40px) 0 80px;
  min-height: 80vh;
}

.legal-page__title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.legal-page__content {
  max-width: 800px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.legal-page__content h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin: 32px 0 12px;
}

.legal-page__content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin: 24px 0 8px;
}

.legal-page__content p {
  margin-bottom: 12px;
}

.legal-page__content ul,
.legal-page__content ol {
  margin: 8px 0 16px 24px;
}

.legal-page__content li {
  margin-bottom: 6px;
}

.legal-page__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}

.legal-page__content th,
.legal-page__content td {
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
  font-size: 14px;
}

.legal-page__content th {
  background: var(--color-bg-light);
  font-weight: 600;
  color: var(--color-text);
}

/* ===== PRODUCT PRICE ===== */
.product-card__price {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.product-card__price--request {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.product-card__buy {
  display: block;
  text-align: center;
  padding: 10px 16px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
  margin-top: auto;
}

.product-card__buy:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgba(59,130,246,.3);
  transform: translateY(-1px);
}

/* ===== ACCOUNT PAGE ===== */
.account-section {
  padding: calc(var(--header-h) + 40px) 0 80px;
  min-height: 80vh;
}

.auth-card {
  max-width: 440px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--color-border);
}

.auth-tab {
  flex: 1;
  padding: 12px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
}

.auth-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.orders-table {
  width: 100%;
  border-collapse: collapse;
}

.orders-table th,
.orders-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.orders-table th {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--color-text-secondary);
  background: var(--color-bg-light);
}

/* ===== CATALOG PAGE ===== */
.catalog-hero {
  background: linear-gradient(135deg, #0d1117 0%, #131a27 40%, #0f1923 100%);
  padding: calc(var(--header-h) + 32px) 0 32px;
  text-align: center;
}

.catalog-hero__title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  color: #fff;
}

.catalog-hero__subtitle {
  font-size: 15px;
  color: rgba(255,255,255,.5);
  margin-top: 8px;
}

.catalog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  padding: 32px 0 80px;
}

.catalog-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
}

.filter-section {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 16px;
}

.filter-section__title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 13px;
  cursor: pointer;
}

.filter-checkbox input[type="checkbox"] {
  accent-color: var(--color-primary);
}

.filter-checkbox--sub {
  padding-left: 20px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.price-range {
  display: flex;
  gap: 8px;
  align-items: center;
}

.price-range input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  outline: none;
}

.price-range input:focus {
  border-color: var(--color-primary);
}

@media (max-width: 768px) {
  .catalog-layout {
    grid-template-columns: 1fr;
  }
  .catalog-sidebar {
    position: static;
  }
}

/* ===== BODY NO SCROLL ===== */
body.no-scroll {
  overflow: hidden;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== LEGAL PAGES ===== */
.legal-page {
  padding-top: 100px;
  padding-bottom: 72px;
  min-height: 50vh;
  background: var(--color-bg);
}

.legal-page__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 32px;
  line-height: 1.2;
}

.legal-page__content {
  max-width: 820px;
}

.legal-page__content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--color-dark);
  line-height: 1.35;
}

.legal-page__content h2:first-child {
  margin-top: 0;
}

.legal-page__content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 22px;
  margin-bottom: 10px;
  color: var(--color-text);
}

.legal-page__content p {
  margin-bottom: 14px;
  color: var(--color-text);
}

.legal-page__content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-page__content a:hover {
  color: var(--color-primary-dark);
}

.legal-page__content ul,
.legal-page__content ol {
  margin-bottom: 16px;
  padding-left: 1.35rem;
}

.legal-page__content ul {
  list-style: disc;
}

.legal-page__content ol {
  list-style: decimal;
}

.legal-page__content li {
  margin-bottom: 8px;
}

.legal-page__content li > ul,
.legal-page__content li > ol {
  margin-top: 8px;
  margin-bottom: 8px;
}

.legal-page__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}

.legal-page__content th,
.legal-page__content td {
  border: 1px solid var(--color-border);
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
}

.legal-page__content thead th {
  background: var(--color-bg-light);
  font-weight: 600;
}

.legal-page__content tbody th {
  background: var(--color-bg-alt);
  font-weight: 600;
  width: 32%;
  color: var(--color-text-secondary);
}

.legal-page__requisites-cards {
  display: grid;
  gap: 16px;
  margin-top: 8px;
}

@media (min-width: 640px) {
  .legal-page__requisites-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

.legal-page__requisite-card {
  padding: 20px;
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.legal-page__requisite-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.legal-page__requisite-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  margin: 0;
}

@media (min-width: 640px) {
  .legal-page__requisite-card--wide {
    grid-column: 1 / -1;
  }
}