:root {
  /* Colors - Dark Mode Default */
  --bg-body: #09090b;
  --bg-card: #18181b;
  --bg-card-hover: #27272a;
  --bg-input: #27272a;
  
  --text-main: #fafafa;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;
  
  --border: #3f3f46;
  --border-hover: #52525b;
  
  --accent-primary: #06b6d4;
  --accent-secondary: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 64px;
  
  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.15);
  
  /* Layout */
  --container-width: 1200px;
  --header-height: 80px;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  margin: 0 0 var(--space-md) 0;
  color: var(--text-muted);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Utilities */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-cols-2, .grid-cols-3, .grid-cols-4 { grid-template-columns: 1fr; }
}

.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-4xl { font-size: 2.5rem; }

.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }

.flex-1 { flex: 1; }
.ml-sm { margin-left: var(--space-sm); }

/* Responsive Visibility */
.hidden-mobile { display: none !important; }

@media (min-width: 768px) {
  .hidden-mobile { display: flex !important; }
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  font-size: 0.95rem;
  gap: 8px;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  background: transparent;
}

.btn-icon:hover {
  color: var(--text-main);
  background: var(--bg-card);
}

/* Hero Section */
.hero {
  padding: var(--space-2xl) 0;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-primary);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: var(--space-md);
}

.hero-image {
  position: relative;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

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

.card-image {
  height: 200px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.card-category {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-primary);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.card-title {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
  color: var(--text-main);
}

.card-price {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.card-actions {
  margin-top: auto;
  display: flex;
  gap: var(--space-sm);
}

/* Promo Banner */
.promo-banner {
  background: linear-gradient(135deg, #18181b 0%, #0c0c0e 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.promo-circle-1 {
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
}

.promo-circle-2 {
  position: absolute;
  bottom: -50%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
}

.z-relative { position: relative; z-index: 2; }

/* Category Card */
.category-card {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.2s;
  cursor: pointer;
}

.category-card:hover {
  border-color: var(--accent-primary);
  background: rgba(6, 182, 212, 0.05);
}

.category-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  color: var(--accent-primary);
}

/* Search Bar */
.search-bar {
  position: relative;
  width: 300px;
}

.search-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 10px 16px 10px 40px;
  border-radius: var(--radius-full);
  outline: none;
  font-size: 0.9rem;
  transition: border-color 0.2s;
}

.search-input:focus {
  border-color: var(--accent-primary);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 16px;
  height: 16px;
}

/* Placeholders */
.placeholder-image {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #27272a 0%, #3f3f46 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
}

.placeholder-phone {
  width: 120px;
  height: 200px;
  border: 4px solid var(--text-muted);
  border-radius: 16px;
  background: var(--bg-body);
  position: relative;
}

.placeholder-phone::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 4px;
  background: var(--text-muted);
  border-radius: 4px;
}

/* Footer */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: var(--space-2xl) 0;
  margin-top: var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  display: block;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

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

.footer-links a:hover {
  color: var(--accent-primary);
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-new {
  background: var(--accent-secondary);
  color: #fff;
}

.badge-sale {
  background: #ef4444;
  color: #fff;
}