:root {
  /* Color Palette - "Ethereal Noir" */
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --accent-primary: #e0e0e0;
  --accent-secondary: #888888;
  --text-main: #ffffff;
  --text-muted: #a0a0a0;
  --border-color: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  
  /* Typography */
  --font-display: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  
  /* Transitions */
  --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.5;
  overflow-x: hidden;
}

/* Base Layout */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 6rem);
}

section {
  margin-top: var(--space-xl);
  position: relative;
}

main > :first-child {
  margin-top: 0;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem 0;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-main);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.nav-actions {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: 0;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-slow);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border: 1px solid var(--accent-primary);
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent-primary);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--accent-primary);
}

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-secondary);
  text-transform: uppercase;
  letter-spacing: 0.4em;
  margin-bottom: 1.5rem;
  display: block;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 0.9;
  font-weight: 800;
  margin-bottom: 2rem;
  letter-spacing: -0.04em;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 3rem;
}

.hero-bg-text {
  position: absolute;
  top: 50%;
  right: -10%;
  transform: translateY(-50%);
  font-size: 30vw;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.02);
  pointer-events: none;
  white-space: nowrap;
}

/* Product Grid */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.product-card {
  position: relative;
  text-decoration: none;
  color: inherit;
  transition: var(--transition-slow);
}

.product-image-wrapper {
  aspect-ratio: 3/4;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.product-image-wrapper:hover .product-image-overlay {
  opacity: 1;
}

.product-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-fast);
}

.product-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.product-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.product-category {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-price {
  font-size: 1rem;
  font-weight: 500;
}

/* Placeholders */
.placeholder-image {
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, #1a1a1a, #2a2a2a);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.placeholder-image::after {
  content: attr(data-label);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  opacity: 0.5;
}

/* Categories Section */
.categories-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: repeat(2, 400px);
  gap: 2rem;
}

.category-card {
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: var(--text-main);
}

.category-card.large {
  grid-row: span 2;
}

.category-content {
  position: absolute;
  bottom: 0;
  left: 0;
  padding: 3rem;
  z-index: 2;
}

.category-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.banner-box {
  background: var(--bg-secondary); 
  padding: var(--space-xl) var(--space-lg); 
  text-align: center; 
  border: 1px solid var(--border-color);
}

.banner-title {
  font-size: 3rem; 
  margin-top: 1rem;
}

.banner-desc {
  margin: 0 auto 3rem;
}

.footer-social-links {
  display: flex; 
  gap: 2rem;
}

.footer-social-link {
  font-size: 0.65rem;
}

/* Footer */
footer {
  margin-top: var(--space-xl);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  display: block;
}

.footer-text {
  color: var(--text-muted);
  max-width: 300px;
  font-size: 0.875rem;
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-main);
}

.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .categories-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .category-card.large {
    grid-row: auto;
    height: 400px;
  }
}