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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #a855f7;
  --bg-dark: #0f172a;
  --bg-light: #f8fafc;
  --text-dark: #1e293b;
  --text-light: #64748b;
  --white: #ffffff;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-800: #1e293b;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
}

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
  z-index: 1000;
  transition: all 0.3s ease;
}

.header-dark {
  background: rgba(15, 23, 42, 0.95);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-dark);
  text-decoration: none;
}

.header-dark .logo,
.header-dark .nav-menu a {
  color: var(--white);
}

.nav-menu {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-menu a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 0.3s;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  opacity: 0.05;
}

.hero-background::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(
    circle,
    rgba(99, 102, 241, 0.15) 0%,
    transparent 70%
  );
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-30px) rotate(5deg);
  }
}

.hero-content {
  text-align: center;
  z-index: 10;
  animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  animation: pulse 2s ease infinite;
}

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

.hero-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.btn-large {
  padding: 1.25rem 3rem;
  font-size: 1.1rem;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-light);
  animation: bounce 2s ease infinite;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-10px);
  }
}

.scroll-indicator span {
  width: 2px;
  height: 30px;
  background: linear-gradient(to bottom, var(--primary), transparent);
}

/* Section */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  background: var(--gray-100);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Featured Products */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.featured-card {
  background: white;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.4s ease;
}

.featured-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.featured-image {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: var(--gray-100);
}

.featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.featured-card:hover .featured-image img {
  transform: scale(1.1);
}

.featured-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
}

.featured-content {
  padding: 2rem;
}

.brand-label {
  display: inline-block;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.featured-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.featured-content p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.featured-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.feature-tag {
  padding: 0.4rem 1rem;
  background: var(--gray-100);
  color: var(--text-dark);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
}

.featured-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-200);
}

.price-amount {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-view {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.3s;
}

.btn-view:hover {
  transform: translateX(5px);
}

/* Filter */
.filter-container {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.75rem 2rem;
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  color: var(--text-dark);
}

.filter-btn:hover,
.filter-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-color: transparent;
  transform: translateY(-2px);
}

/* Products Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

.product-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

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

.product-image {
  position: relative;
  height: 280px;
  overflow: hidden;
  background: var(--gray-100);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.product-card:hover .product-image img {
  transform: scale(1.1);
}

.product-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(99, 102, 241, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
}

.product-card:hover .product-overlay {
  opacity: 1;
}

.btn-quick-view {
  padding: 0.75rem 2rem;
  background: white;
  color: var(--primary);
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.3s;
}

.btn-quick-view:hover {
  transform: scale(1.05);
}

.product-info {
  padding: 1.5rem;
}

.product-brand {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
}

.product-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0.5rem 0;
  color: var(--text-dark);
}

.product-specs {
  display: flex;
  gap: 1rem;
  margin: 1rem 0;
  font-size: 0.875rem;
  color: var(--text-light);
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
}

.product-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

.btn-details {
  padding: 0.5rem 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.3s;
}

.btn-details:hover {
  transform: scale(1.05);
}

/* Brands */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.brand-card {
  background: white;
  padding: 3rem 2rem;
  border-radius: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

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

.brand-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-card p {
  color: var(--text-light);
}

/* Product Detail */
.product-detail {
  padding-top: 120px;
  padding-bottom: 4rem;
  min-height: 100vh;
}

.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  margin-bottom: 2rem;
  transition: transform 0.3s;
}

.back-link:hover {
  transform: translateX(-5px);
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.detail-image {
  position: sticky;
  top: 120px;
  height: fit-content;
}

.image-wrapper {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: var(--gray-100);
  aspect-ratio: 1;
}

.image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.category-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  padding: 0.75rem 1.5rem;
  background: white;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: var(--shadow);
}

.brand-tag {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  background: var(--gray-100);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.detail-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.detail-price {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
}

.detail-price .price-amount {
  font-size: 3rem;
}

.price-label {
  color: var(--text-light);
  font-size: 0.875rem;
}

.detail-description {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-light);
  margin-bottom: 2rem;
}

.detail-section {
  margin-bottom: 2rem;
}

.detail-section h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.color-options {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.color-option {
  padding: 0.5rem 1.25rem;
  background: var(--gray-100);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.3s;
  cursor: pointer;
}

.color-option:hover {
  background: var(--primary);
  color: white;
}

.features-list {
  display: grid;
  gap: 0.75rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--gray-100);
  border-radius: 12px;
}

.detail-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.specs-section {
  background: white;
  padding: 3rem;
  border-radius: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 4rem;
}

.specs-section h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 2rem;
  color: var(--text-dark);
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.spec-item {
  padding: 1.5rem;
  background: var(--gray-100);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.spec-label {
  font-size: 0.875rem;
  color: var(--text-light);
  font-weight: 500;
}

.spec-value {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-dark);
}

.related-section h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 2rem;
  color: var(--text-dark);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.related-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

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

.related-image {
  height: 220px;
  overflow: hidden;
  background: var(--gray-100);
}

.related-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.related-info {
  padding: 1.5rem;
}

.related-brand {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
}

.related-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0.5rem 0 1rem;
}

.related-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
}

.related-price {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
}

.btn-view-related {
  padding: 0.5rem 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.3s;
}

.btn-view-related:hover {
  transform: scale(1.05);
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.footer-section ul {
  list-style: none;
}

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

.footer-section a {
  color: var(--gray-200);
  text-decoration: none;
  transition: color 0.3s;
}

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

.footer-section p {
  color: var(--gray-200);
  line-height: 1.8;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: var(--gray-200);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .nav-menu {
    gap: 1.5rem;
    font-size: 0.875rem;
  }

  .hero {
    min-height: 80vh;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .section {
    padding: 3rem 0;
  }

  .featured-grid,
  .products-grid {
    grid-template-columns: 1fr;
  }

  .detail-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .detail-image {
    position: relative;
    top: 0;
  }

  .detail-title {
    font-size: 2rem;
  }

  .detail-actions {
    flex-direction: column;
  }

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