:root {
  /* Colors - Professional Blue/Ocean Theme */
  --primary-blue: #0066CC;
  --deep-navy: #003D7A;
  --bright-aqua: #00A8E8;
  --light-gray: #F0F0F0;
  --medium-gray: #767676;
  --dark-text: #000000;
  --white: #FFFFFF;
  --success: #01AB31;
  --warning: #FF3333;
  --discount-bg: #FFE5E5;
  --discount-text: #FF3333;
  
  /* Typography */
  --font-heading: 'Integral CF', 'Arial Black', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Satoshi', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Font Sizes */
  --font-size-h1: clamp(36px, 5vw, 64px);
  --font-size-h2: clamp(32px, 4vw, 48px);
  --font-size-h3: clamp(24px, 3vw, 32px);
  --font-size-h4: 24px;
  --font-size-body: 16px;
  --font-size-small: 14px;
  --font-size-tiny: 12px;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 64px;
  --spacing-xxl: 100px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Container */
  --container-max: 1440px;
  --container-padding: 24px;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  color: var(--dark-text);
  line-height: 1.6;
  background-color: var(--white);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 54px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-body);
  font-weight: 500;
  transition: var(--transition-normal);
  cursor: pointer;
  border: none;
  text-align: center;
  gap: 8px;
}

.btn-primary {
  background-color: var(--dark-text);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--deep-navy);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--dark-text);
  border: 1px solid var(--light-gray);
}

.btn-secondary:hover {
  background-color: var(--light-gray);
}

.btn-blue {
  background-color: var(--primary-blue);
  color: var(--white);
}

.btn-blue:hover {
  background-color: var(--deep-navy);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Header/Navigation */
.header {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition-normal);
}

.header-top {
  background-color: var(--dark-text);
  color: var(--white);
  padding: 10px 0;
  font-size: var(--font-size-small);
  text-align: center;
}

.header-main {
  padding: 20px 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.logo {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 700;
  color: var(--dark-text);
}

.nav-menu {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-link {
  font-size: var(--font-size-body);
  color: var(--dark-text);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav-link:hover {
  background-color: var(--light-gray);
}

.nav-icons {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  position: relative;
  transition: var(--transition-fast);
}

.icon-btn:hover {
  background-color: var(--light-gray);
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background-color: var(--primary-blue);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--dark-text);
  transition: var(--transition-fast);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  background-color: var(--light-gray);
  padding: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}

.hero-carousel {
  position: relative;
  height: 600px;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity var(--transition-slow);
  display: flex;
  align-items: center;
}

.hero-slide.active {
  opacity: 1;
}

.hero-content {
  flex: 1;
  padding-right: var(--spacing-xl);
}

.hero-title {
  font-size: var(--font-size-h1);
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
}

.hero-description {
  font-size: 18px;
  color: var(--medium-gray);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
}

.hero-stats {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-value {
  font-size: 40px;
  font-weight: 700;
  font-family: var(--font-heading);
}

.hero-stat-label {
  font-size: var(--font-size-small);
  color: var(--medium-gray);
}

.hero-image {
  flex: 1;
  position: relative;
  height: 100%;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.carousel-controls {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: var(--transition-fast);
}

.carousel-dot.active {
  background-color: var(--dark-text);
  width: 32px;
  border-radius: 6px;
}

/* Brand Section */
.brands {
  background-color: var(--dark-text);
  padding: var(--spacing-lg) 0;
}

.brands-grid {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.brand-logo {
  height: 40px;
  opacity: 0.8;
  transition: var(--transition-fast);
  filter: brightness(0) invert(1);
}

.brand-logo:hover {
  opacity: 1;
}

/* Section Titles */
.section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: var(--font-size-h2);
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  color: var(--medium-gray);
  font-size: 18px;
}

/* Product Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* View All Button */
.view-all {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* Footer */
.footer {
  background-color: var(--light-gray);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-xxl);
}

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

.footer-section h4 {
  margin-bottom: var(--spacing-md);
  font-size: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link {
  color: var(--medium-gray);
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-blue);
}

.footer-bottom {
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.payment-methods {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.payment-icon {
  height: 24px;
}

/* WhatsApp Floating Button */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  transition: var(--transition-normal);
  animation: pulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 40px rgba(37, 211, 102, 0.4);
}

.whatsapp-float svg {
  width: 35px;
  height: 35px;
  fill: white;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }
  50% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
    --spacing-xl: 40px;
    --spacing-xxl: 60px;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    height: 100vh;
    background-color: var(--white);
    flex-direction: column;
    padding: var(--spacing-xl) var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    align-items: flex-start;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hero-carousel {
    height: auto;
    min-height: 500px;
  }
  
  .hero-slide {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-content {
    padding-right: 0;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .products-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--spacing-sm);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .whatsapp-float {
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
  }
  
  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}

@media (max-width: 480px) {
  .btn {
    padding: 12px 32px;
    font-size: 14px;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .products-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Checkout Page Styles */
.checkout-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
}

@media (max-width: 768px) {
    .checkout-container {
        grid-template-columns: 1fr;
    }
}

.checkout-section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.section-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 24px;
    color: #333;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-input:focus {
    border-color: var(--primary-blue);
    outline: none;
}

.order-summary-item {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.summary-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    background-color: #f9f9f9;
}

.summary-details {
    flex: 1;
}

.summary-title {
    font-weight: 600;
    margin-bottom: 5px;
    display: block;
}

.summary-meta {
    color: #777;
    font-size: 14px;
}

.summary-total {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid #eee;
}

.total-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 16px;
    color: #555;
}

.total-row.final {
    font-size: 20px;
    font-weight: 700;
    color: #333;
    margin-top: 15px;
}

.place-order-btn {
    width: 100%;
    padding: 16px;
    background-color: #25D366; /* WhatsApp Green */
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.place-order-btn:hover {
    background-color: #128C7E;
}

.place-order-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}