/* ============================================
   AMAZON ASSOCIATES LANDING PAGE - DESIGN SYSTEM
   ============================================ */

/* Import Modern Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;800&family=Outfit:wght@400;600;700&display=swap');

/* ============================================
   CSS VARIABLES - DESIGN TOKENS
   ============================================ */
:root {
  /* Premium Color Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --success-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --dark-gradient: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  
  /* Neutral Colors */
  --white: #ffffff;
  --off-white: #f8f9fa;
  --light-gray: #e9ecef;
  --medium-gray: #6c757d;
  --dark-gray: #343a40;
  --black: #000000;
  
  /* Semantic Colors */
  --text-primary: #1a1a1a;
  --text-secondary: #4a5568;
  --text-light: #718096;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--text-primary);
  line-height: 1.6;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  animation: fadeInDown 0.6s ease;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.6s ease 0.4s both;
}

/* ============================================
   PRODUCT CARD
   ============================================ */
.product-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
  margin: var(--spacing-xl) auto;
  max-width: 900px;
  animation: fadeInUp 0.6s ease 0.6s both;
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.product-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  align-items: center;
}

.product-image-main {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 1;
  background: var(--off-white);
}

.product-image-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-image-main:hover img {
  transform: scale(1.05);
}

.prime-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: var(--accent-gradient);
  color: var(--white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow-md);
}

.product-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.product-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
}

.rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.stars {
  color: #ffa500;
  font-size: 1.25rem;
  letter-spacing: 2px;
}

.rating-text {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.price-section {
  margin-bottom: var(--spacing-lg);
}

.price {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

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

.cta-button {
  display: inline-block;
  background: var(--primary-gradient);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-full);
  font-size: 1.125rem;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left var(--transition-slow);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.cta-button:hover::before {
  left: 100%;
}

.cta-button:active {
  transform: translateY(0);
}

/* ============================================
   PRODUCT FEATURES
   ============================================ */
.product-description {
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
}

.description-text {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.feature-item {
  background: var(--off-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border-left: 4px solid transparent;
  background-image: linear-gradient(var(--off-white), var(--off-white)), var(--primary-gradient);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  transition: all var(--transition-base);
}

.feature-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.feature-text {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* ============================================
   IMAGE GALLERY
   ============================================ */
.image-gallery {
  margin-bottom: var(--spacing-xl);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--off-white);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================
   TRUST SIGNALS
   ============================================ */
.trust-signals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 2px solid var(--light-gray);
}

.trust-item {
  text-align: center;
  padding: var(--spacing-md);
}

.trust-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.trust-title {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

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

/* ============================================
   RELATED BLOG GUIDES (BACKLINKS)
   ============================================ */
.related-blogs {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 2px solid var(--light-gray);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.blog-card {
  background: var(--off-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--light-gray);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #667eea;
}

.blog-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.blog-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.blog-link {
  color: #667eea;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.blog-link:hover {
  text-decoration: underline;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: rgba(255, 255, 255, 0.8);
}

.footer-text {
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

.footer-link {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  transition: opacity var(--transition-fast);
}

.footer-link:hover {
  opacity: 0.8;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
  .product-header {
    grid-template-columns: 1fr;
  }
  
  .product-card {
    padding: var(--spacing-lg);
  }
  
  .hero {
    padding: var(--spacing-lg) 0;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .trust-signals {
    grid-template-columns: 1fr;
  }
  
  .price {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-button {
    width: 100%;
    padding: var(--spacing-md);
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.hidden {
  display: none;
}