/* CSS Variables */
:root {
  --primary: #6c63ff;
  --secondary: #111827;
  --accent: #fbbf24;
  --background: #f8fafc;
  --white: #ffffff;
  --muted: #64748b;
  --line: #e2e8f0;
  --shadow: 0 24px 70px rgba(17, 24, 39, 0.12);
  --shadow-soft: 0 14px 40px rgba(17, 24, 39, 0.08);
  --radius: 8px;
  --radius-lg: 18px;
  --container: 1180px;
  --transition: 220ms ease;
}

/* Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  background: var(--background);
  color: var(--secondary);
  font-family: "Poppins", Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  margin: 0 auto;
  max-width: var(--container);
  padding: 0 24px;
  width: 100%;
}

.section {
  padding: 96px 0;
}

.section-sm {
  padding: 54px 0;
}

.section-heading {
  margin: 0 auto 42px;
  max-width: 680px;
  text-align: center;
}

.section-heading h2,
.sale-grid h2,
.newsletter h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
}

.section-heading p,
.hero-copy,
.sale-grid p,
.newsletter p,
.footer p {
  color: var(--muted);
}

.eyebrow,
.section-kicker,
.product-category {
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn {
  align-items: center;
  border: 0;
  border-radius: var(--radius);
  display: inline-flex;
  font-weight: 700;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn:hover,
.icon-btn:hover,
.add-cart:hover,
.filter-btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--primary);
  box-shadow: 0 14px 30px rgba(108, 99, 255, 0.28);
  color: var(--white);
}

.btn-secondary {
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--secondary);
}

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

.sr-only {
  height: 1px;
  margin: -1px;
  overflow: hidden;
  position: absolute;
  width: 1px;
}

/* Header */
.site-header {
  background: rgba(248, 250, 252, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  left: 0;
  position: sticky;
  top: 0;
  transition: box-shadow var(--transition), background var(--transition);
  width: 100%;
  z-index: 1000;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 30px rgba(17, 24, 39, 0.08);
}

.navbar {
  align-items: center;
  display: flex;
  height: 78px;
  justify-content: space-between;
}

.logo {
  align-items: center;
  display: inline-flex;
  font-size: 1.35rem;
  font-weight: 800;
  gap: 10px;
}

.logo-mark {
  align-items: center;
  background: var(--primary);
  border-radius: 8px;
  color: var(--white);
  display: inline-flex;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.nav-list {
  align-items: center;
  display: flex;
  gap: 34px;
  list-style: none;
}

.nav-link {
  color: #475569;
  font-size: 0.95rem;
  font-weight: 600;
  position: relative;
  transition: color var(--transition);
}

.nav-link::after {
  background: var(--primary);
  border-radius: 999px;
  bottom: -10px;
  content: "";
  height: 3px;
  left: 0;
  position: absolute;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
  width: 100%;
}

.nav-link.active,
.nav-link:hover {
  color: var(--secondary);
}

.nav-link.active::after,
.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-actions {
  align-items: center;
  display: flex;
  gap: 12px;
}

.icon-btn,
.hamburger {
  align-items: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--secondary);
  display: inline-flex;
  height: 42px;
  justify-content: center;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
  width: 42px;
}

.cart-count {
  align-items: center;
  background: var(--accent);
  border-radius: 999px;
  color: var(--secondary);
  display: inline-flex;
  font-size: 0.72rem;
  font-weight: 800;
  height: 20px;
  justify-content: center;
  position: absolute;
  right: -7px;
  top: -7px;
  width: 20px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
}

.hamburger span {
  background: var(--secondary);
  border-radius: 999px;
  height: 2px;
  transition: transform var(--transition), opacity var(--transition);
  width: 18px;
}

/* Hero */
.hero {
  min-height: calc(100vh - 78px);
  overflow: hidden;
  padding-top: 70px;
}

.hero-grid {
  align-items: center;
  display: grid;
  gap: 64px;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.88fr);
}

.hero h1 {
  font-size: clamp(2.8rem, 6.4vw, 5.9rem);
  line-height: 0.98;
  margin: 14px 0 24px;
  max-width: 780px;
}

.hero-copy {
  font-size: 1.08rem;
  max-width: 620px;
}

.hero-actions,
.hero-stats {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

.hero-stats {
  gap: 24px;
  margin-top: 34px;
}

.hero-stats span {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-stats strong {
  color: var(--secondary);
  display: block;
  font-size: 1.35rem;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  aspect-ratio: 0.95 / 1;
  border-radius: 28px;
  box-shadow: var(--shadow);
  object-fit: cover;
}

.floating-note {
  align-items: center;
  background: var(--white);
  border-radius: var(--radius);
  bottom: 28px;
  box-shadow: var(--shadow-soft);
  display: flex;
  font-weight: 700;
  gap: 10px;
  left: -28px;
  padding: 16px 18px;
  position: absolute;
}

.floating-note i,
.rating i {
  color: var(--accent);
}

/* Brands */
.brands {
  background: var(--white);
}

.section-kicker {
  margin-bottom: 22px;
  text-align: center;
}

.brand-strip {
  align-items: center;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(5, 1fr);
}

.brand-strip span {
  background: var(--background);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #334155;
  font-weight: 800;
  padding: 22px 12px;
  text-align: center;
}

/* Categories */
.category-grid,
.benefit-grid,
.testimonial-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, 1fr);
}

.category-card,
.product-card,
.benefit-card,
.testimonial-card {
  background: var(--white);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.category-card:hover,
.product-card:hover,
.benefit-card:hover,
.testimonial-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}

.category-card img {
  aspect-ratio: 1.36 / 1;
  object-fit: cover;
}

.category-card div {
  padding: 24px;
}

.category-card h3,
.benefit-card h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.category-card p,
.benefit-card p,
.testimonial-card p {
  color: var(--muted);
}

/* Products */
.filter-tabs {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 34px;
}

.filter-btn {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #475569;
  font-weight: 700;
  min-height: 42px;
  padding: 0 18px;
  transition: all var(--transition);
}

.filter-btn.active {
  background: var(--secondary);
  color: var(--white);
}

.product-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(4, 1fr);
}

.product-card {
  position: relative;
}

.product-card.hide {
  display: none;
}

.badge {
  background: var(--accent);
  border-radius: 999px;
  color: var(--secondary);
  font-size: 0.75rem;
  font-weight: 800;
  left: 16px;
  padding: 7px 11px;
  position: absolute;
  top: 16px;
  z-index: 2;
}

.product-card img {
  aspect-ratio: 1.24 / 1;
  object-fit: cover;
  width: 100%;
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 1.05rem;
  line-height: 1.35;
  min-height: 46px;
}

.rating {
  align-items: center;
  display: flex;
  font-size: 0.83rem;
  gap: 3px;
  margin: 12px 0 18px;
}

.rating span {
  color: var(--muted);
  font-weight: 700;
  margin-left: 5px;
}

.product-footer {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.product-footer strong {
  font-size: 1.2rem;
}

.add-cart {
  background: var(--primary);
  border: 0;
  border-radius: var(--radius);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 800;
  min-height: 40px;
  padding: 0 14px;
  transition: transform var(--transition), background var(--transition);
}

.add-cart.added {
  background: #16a34a;
}

/* Flash Sale */
.flash-sale {
  background: var(--secondary);
  color: var(--white);
}

.sale-grid {
  align-items: center;
  display: grid;
  gap: 34px;
  grid-template-columns: 1fr auto auto;
}

.sale-grid p {
  color: #cbd5e1;
  max-width: 560px;
}

.countdown {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, 78px);
}

.countdown div {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  padding: 14px 8px;
  text-align: center;
}

.countdown strong {
  display: block;
  font-size: 1.55rem;
  line-height: 1;
}

.countdown span {
  color: #cbd5e1;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
}

/* Benefits and Testimonials */
.benefits {
  background: var(--white);
}

.benefit-card,
.testimonial-card {
  padding: 30px;
}

.benefit-card i {
  align-items: center;
  background: rgba(108, 99, 255, 0.1);
  border-radius: var(--radius);
  color: var(--primary);
  display: inline-flex;
  font-size: 1.4rem;
  height: 52px;
  justify-content: center;
  margin-bottom: 20px;
  width: 52px;
}

.testimonial-card {
  display: flex;
  flex-direction: column;
  gap: 24px;
  justify-content: space-between;
}

.testimonial-card strong,
.testimonial-card span {
  display: block;
}

.testimonial-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

/* Newsletter */
.newsletter-inner {
  align-items: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr minmax(320px, 0.8fr);
  padding: 44px;
}

.newsletter-form {
  background: var(--background);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  gap: 10px;
  padding: 8px;
}

.newsletter-form input {
  background: transparent;
  border: 0;
  color: var(--secondary);
  min-width: 0;
  outline: 0;
  padding: 0 12px;
  width: 100%;
}

/* Footer */
.footer {
  background: var(--secondary);
  color: var(--white);
  padding: 60px 0 28px;
}

.footer-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: 1.6fr repeat(3, 1fr);
}

.footer h3 {
  font-size: 1rem;
  margin-bottom: 14px;
}

.footer a:not(.logo) {
  color: #cbd5e1;
  display: block;
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer a:hover {
  color: var(--white);
}

.footer p {
  color: #cbd5e1;
  margin-top: 16px;
  max-width: 340px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  display: inline-flex !important;
  height: 40px;
  justify-content: center;
  width: 40px;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #94a3b8;
  margin: 40px auto 0;
  max-width: var(--container);
  padding: 24px 24px 0;
  text-align: center;
}

/* Motion */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

.back-to-top {
  align-items: center;
  background: var(--primary);
  border: 0;
  border-radius: var(--radius);
  bottom: 24px;
  box-shadow: var(--shadow-soft);
  color: var(--white);
  display: inline-flex;
  height: 46px;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  right: 24px;
  transform: translateY(12px);
  transition: all var(--transition);
  width: 46px;
  z-index: 900;
}

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

:focus-visible {
  outline: 3px solid rgba(108, 99, 255, 0.45);
  outline-offset: 3px;
}