/* ===== Bootstrap 5.3 Compatibility Layer ===== */
:root {
  /* Enhanced Cool Color Palette - Professional & Modern */
  --primary-dark: #1e293b;        /* Deeper Slate Blue (More Professional) */
  --primary-cool: #334155;        /* Cool Slate Blue */
  --secondary-cool: #0891b2;      /* Modern Cyan Blue (More Professional) */
  --accent-cool: #22d3ee;         /* Bright Cyan (For Highlights) */
  --accent-warm: #f59e0b;         /* Amber Gold (For CTAs) */
  
  /* Enhanced Backgrounds */
  --bg-ice: #f8fafc;             /* Ultra Light Blue-Gray */
  --bg-frost: #e2e8f0;           /* Light Blue-Gray */
  --bg-snow: #ffffff;            /* Pure White */
  --bg-mist: #f1f5f9;            /* Very Light Blue-Gray */
  
  /* Enhanced Text Colors */
  --text-glacial: #0f172a;       /* Deep Blue-Black */
  --text-artic: #475569;         /* Medium Blue-Gray */
  --text-frost: #64748b;         /* Light Blue-Gray */
  --text-muted: #94a3b8;         /* Very Light Blue-Gray */
  
  /* Functional Colors */
  --navbar-height: 72px;
  --accent-red: #dc2626;          /* Modern Red */
  --accent-green: #059669;        /* Modern Green */
  
  /* Typography System */
  --font-family-sans-serif: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-headings: 'Poppins', var(--font-family-sans-serif);
  
  /* Enhanced Spacing System */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3rem;
  
  /* Border Radius System */
  --border-radius-sm: 0.25rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-2xl: 1.5rem;
  
  /* Enhanced Shadow System */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Animation System */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  
  /* Bootstrap 5.3 CSS Variable Mapping */
  --bs-primary: var(--primary-dark);
  --bs-primary-rgb: 30, 41, 59;
  --bs-secondary: var(--secondary-cool);
  --bs-secondary-rgb: 8, 145, 178;
  --bs-success: var(--accent-green);
  --bs-success-rgb: 5, 150, 105;
  --bs-info: var(--accent-cool);
  --bs-info-rgb: 34, 211, 238;
  --bs-warning: var(--accent-warm);
  --bs-warning-rgb: 245, 158, 11;
  --bs-danger: var(--accent-red);
  --bs-danger-rgb: 220, 38, 38;
  --bs-light: var(--bg-frost);
  --bs-light-rgb: 226, 232, 240;
  --bs-dark: var(--text-glacial);
  --bs-dark-rgb: 15, 23, 42;
  --bs-body-font-family: var(--font-family-sans-serif);
  --bs-body-bg: var(--bg-ice);
  --bs-body-color: var(--text-glacial);
  --bs-border-radius: var(--border-radius);
  --bs-box-shadow: var(--shadow);
}

/* ===== Enhanced Base Styles ===== */
* {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family-sans-serif);
  color: var(--text-glacial);
  background-color: var(--bg-ice);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-headings);
  font-weight: 600;
  color: var(--primary-dark);
  line-height: 1.3;
  letter-spacing: -0.025em;
}

.container {
  max-width: 1200px;
}

/* ===== Enhanced Header ===== */
.navbar.bg-primary-gradient {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-cool) 100%);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(51, 65, 85, 0.95) 100%);
}

.navbar-logo {
  height: 45px;
  max-width: 200px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-base) var(--ease-out);
}

.navbar-logo:hover {
  transform: scale(1.02);
}

.navbar-nav-spaced .nav-item {
  margin-left: var(--spacing-sm);
  margin-right: var(--spacing-sm);
}

.nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
  padding: var(--spacing-sm) var(--spacing-md);
  position: relative;
  transition: all var(--transition-base);
  border-radius: var(--border-radius);
  font-weight: 500;
  text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
  color: white !important;
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--spacing-md);
  right: var(--spacing-md);
  height: 2px;
  background: var(--secondary-cool);
  border-radius: var(--border-radius-sm);
}

/* ===== Enhanced Section Styles ===== */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-2xl);
  position: relative;
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 0;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-cool), var(--accent-cool));
  border-radius: var(--border-radius-sm);
}

.section-header h2 {
  font-size: 2rem;
  color: var(--primary-dark);
  margin: 0;
  font-weight: 700;
}

.view-all-link {
  color: var(--secondary-cool);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  border: 2px solid transparent;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.view-all-link:hover {
  color: var(--primary-cool);
  border-color: var(--secondary-cool);
  background: rgba(8, 145, 178, 0.1);
  transform: translateX(4px);
}

.view-all-link::after {
  content: '→';
  transition: transform var(--transition-base);
}

.view-all-link:hover::after {
  transform: translateX(4px);
}

/* ===== Enhanced Cards ===== */
.product-grid,
.promotion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.product-card,
.promotion-card {
  background: var(--bg-snow);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base) var(--ease-out);
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--bg-frost);
  position: relative;
  isolation: isolate;
}

.product-card::before,
.promotion-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-cool), var(--accent-cool));
  transform: scaleX(0);
  transition: transform var(--transition-base) var(--ease-out);
  transform-origin: left;
}

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

.product-card:hover::before,
.promotion-card:hover::before {
  transform: scaleX(1);
}

.card-image-container {
  aspect-ratio: 1/1;
  background: var(--bg-mist);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  overflow: hidden;
  position: relative;
}

.card-image-container::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(34, 211, 238, 0.05) 50%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.product-card:hover .card-image-container::after,
.promotion-card:hover .card-image-container::after {
  opacity: 1;
}

.card-image-container img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform var(--transition-base) var(--ease-out);
}

.product-card:hover .card-image-container img,
.promotion-card:hover .card-image-container img {
  transform: scale(1.05);
}

.card-body {
  padding: var(--spacing-xl);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-body h3 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-glacial);
  font-weight: 600;
  line-height: 1.4;
}

.card-body p {
  color: var(--text-artic);
  font-size: 0.95rem;
  margin-bottom: 0;
  line-height: 1.6;
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-xl) var(--spacing-xl);
  background: transparent;
  border-top: 1px solid var(--bg-frost);
  margin-top: auto;
}

/* ===== Enhanced Buttons ===== */
.product-cta-btn,
.promotion-cta-btn {
  display: block;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: center;
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: all var(--transition-base) var(--ease-out);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.025em;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.product-cta-btn::before,
.promotion-cta-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.2) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
}

.product-cta-btn:hover::before,
.promotion-cta-btn:hover::before {
  transform: translateX(100%);
}

.product-cta-btn {
  background: linear-gradient(135deg, var(--primary-cool) 0%, var(--primary-dark) 100%);
  color: white;
  border: 2px solid var(--primary-cool);
}

.product-cta-btn:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-dark);
}

.promotion-cta-btn {
  background: linear-gradient(135deg, var(--accent-red) 0%, #b91c1c 100%);
  color: white;
  border: 2px solid var(--accent-red);
}

.promotion-cta-btn:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #b91c1c;
}

/* ===== Enhanced Footer ===== */
.footer {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #0f1419 100%);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--secondary-cool) 20%, var(--accent-cool) 50%, var(--secondary-cool) 80%, transparent);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-lg);
  color: white;
  font-weight: 600;
}

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

.footer-section ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer-section a:hover {
  color: var(--secondary-cool);
  transform: translateX(4px);
}

.footer-section i {
  color: var(--secondary-cool);
  transition: transform var(--transition-base);
}

.footer-section a:hover i {
  transform: scale(1.1);
}

.footer-logo img {
  max-height: 60px;
  width: auto;
  filter: brightness(1.1);
}

.footer-social .social-link {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  margin-right: var(--spacing-sm);
  text-decoration: none;
}

.footer-social .social-link:hover {
  color: var(--secondary-cool);
  background: rgba(8, 145, 178, 0.2);
  transform: translateY(-4px) scale(1.1);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

/* ===== Enhanced Hero Section ===== */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: var(--bg-mist);
}

.hero-overlay {
  position: relative;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(51, 65, 85, 0.6) 100%);
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  z-index: 1;
}

.hero-content {
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-title {
  font-size: 3.75rem;
  font-weight: 800;
  margin-bottom: var(--spacing-xl);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.4rem;
  margin-bottom: var(--spacing-2xl);
  opacity: 0.95;
  line-height: 1.6;
}

.hero-cta {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: all var(--transition-base) var(--ease-out);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: linear-gradient(135deg, var(--secondary-cool) 0%, var(--accent-cool) 100%);
  color: white;
  text-decoration: none;
  border: 2px solid transparent;
}

.hero-cta:hover {
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(255, 255, 255, 0.3);
}

/* ===== Enhanced Carousel ===== */
.hero-carousel-container {
  height: calc(100vh - var(--navbar-height));
  max-height: 800px;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 var(--border-radius-2xl) var(--border-radius-2xl);
}

.carousel-image-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.carousel-image-container {
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
}

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

.carousel-caption {
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--spacing-2xl);
  text-align: left;
  color: white;
  border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

.carousel-caption h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.carousel-caption p {
  font-size: 1.25rem;
  line-height: 1.6;
}

/* ===== Enhanced Product Pricing ===== */
.product-pricing {
  font-family: var(--font-family-headings);
  margin-top: auto;
  padding-top: var(--spacing-md);
}

.original-price {
  text-decoration: line-through;
  color: var(--text-frost);
  font-size: 0.9rem;
  margin-right: var(--spacing-sm);
}

.current-price {
  font-weight: 700;
  color: var(--primary-dark);
  font-size: 1.2rem;
}

.normal-price {
  font-weight: 600;
  color: var(--primary-dark);
  font-size: 1.1rem;
}

.discount-badge {
  display: inline-block;
  background: linear-gradient(45deg, var(--accent-red), #ff6b6b);
  color: white;
  font-size: 0.7rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--border-radius-xl);
  margin-left: var(--spacing-sm);
  vertical-align: middle;
  font-weight: 700;
  animation: pulse 2s infinite;
  box-shadow: var(--shadow-sm);
}

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

/* ===== Section Backgrounds ===== */
.products-section {
  background-color: var(--bg-snow);
  padding: var(--spacing-3xl) 0;
}

.promotions-section {
  background-color: var(--bg-mist);
  border-top: 1px solid var(--bg-frost);
  border-bottom: 1px solid var(--bg-frost);
  padding: var(--spacing-3xl) 0;
}

.wave-divider {
  color: var(--bg-frost);
  width: 100%;
  overflow: hidden;
  line-height: 0;
  transform: rotate(180deg);
}

.wave-divider svg {
  display: block;
  width: calc(100% + 1.3px);
  height: 60px;
}

/* ===== Accessibility & Performance Enhancements ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== Enhanced Responsive Design ===== */
@media (max-width: 1200px) {
  .product-grid,
  .promotion-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
  }
}

@media (max-width: 992px) {
  .hero-carousel-container { 
    height: 75vh; 
    border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
  }
  .section-header { 
    flex-direction: column; 
    align-items: flex-start; 
    gap: var(--spacing-md);
  }
  .section-header h2 { 
    margin-bottom: 0; 
    font-size: 1.75rem;
  }
  .section-header::after { 
    width: 60px; 
  }
  .hero-title {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  .hero-carousel-container { 
    height: 60vh; 
  }
  .product-grid,
  .promotion-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--spacing-md);
  }
  .current-price {
    font-size: 1.1rem;
  }
  .original-price {
    font-size: 0.85rem;
  }
  .hero-section {
    min-height: 50vh;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-subtitle {
    font-size: 1.1rem;
  }
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 576px) {
  .product-grid,
  .promotion-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .card-body {
    padding: var(--spacing-lg);
  }
  .card-footer {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
  }
}

/* ===== Utility Classes ===== */
.text-gradient-primary {
  background: linear-gradient(135deg, var(--primary-dark), var(--secondary-cool));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient-cool {
  background: linear-gradient(135deg, var(--secondary-cool) 0%, var(--accent-cool) 100%);
}

.hover-lift {
  transition: transform var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

.shadow-glow {
  box-shadow: 0 0 20px rgba(8, 145, 178, 0.3);
}

/* ===== Enhanced Focus States ===== */
*:focus {
  outline: 2px solid var(--secondary-cool);
  outline-offset: 2px;
}

button:focus,
.btn:focus,
a:focus {
  outline: 2px solid var(--secondary-cool);
  outline-offset: 2px;
}

/* ===== Print Styles ===== */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
  
  .navbar,
  .footer {
    display: none !important;
  }
}