:root {
  /* Colors */
  --color-primary: #0A192F; /* Midnight Blue */
  --color-secondary: #1C1C1C; /* Charcoal Gray */
  --color-accent: #2C3E50; /* Steel Blue */
  --color-dark: #34495E; /* Deep Slate */
  --color-darker: #0F3D3E; /* Emerald Black */
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  
  /* Typography */
  --font-primary: 'Montserrat', sans-serif;
  --font-secondary: 'Raleway', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  
  /* Borders and Shadows */
  --border-radius-sm: 3px;
  --border-radius-md: 6px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Base styles */
html {
  font-size: 16px;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  color: var(--color-secondary);
  background-color: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  margin-top: 0;
  margin-bottom: var(--space-md);
  font-weight: 700;
  line-height: 1.2;
}

p {
  margin-top: 0;
  margin-bottom: var(--space-md);
}

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

a:hover, a:focus {
  color: var(--color-accent);
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  text-align: center;
  font-weight: 600;
}

.btn:hover, .btn:focus {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-large {
  padding: var(--space-md) var(--space-lg);
  font-size: 1.1rem;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover, .btn-outline:focus {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Unique header styles */
.header {
  background-color: var(--color-white);
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 100;
  transform: translateY(0);
  transition: transform var(--transition-medium);
}

.header.hidden {
  transform: translateY(-100%);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  position: relative;
}

.logo a {
  color: var(--color-primary);
  display: inline-block;
  padding: var(--space-xs) 0;
  letter-spacing: 0.5px;
}

.logo a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 20px;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-medium);
}

.logo a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.nav-toggle:hover {
  color: var(--color-accent);
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin-left: var(--space-md);
}

.nav-link {
  font-weight: 600;
  padding: var(--space-sm) 0;
  position: relative;
  display: block;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-medium);
}

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

/* Hero section */
.hero {
  padding: var(--space-xl) 0;
  background-color: var(--color-primary);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 800px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: var(--space-lg);
  max-width: 600px;
}

.page-hero {
  padding: var(--space-xl) 0;
  background-color: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  position: relative;
}

.page-hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
}

.page-hero p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
}

.green-hero {
  background-color: var(--color-darker);
}

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

.bg-light {
  background-color: var(--color-light);
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-primary);
  position: relative;
  padding-bottom: var(--space-sm);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 2px;
  background-color: var(--color-accent);
}

/* Feature cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  padding: var(--space-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

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

.feature-card i {
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--space-sm);
}

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.product-card {
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background-color: var(--color-white);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

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

.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.product-content {
  padding: var(--space-md);
}

.product-title {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.product-description {
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
  color: #666;
}

.product-price {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
}

.product-features {
  list-style-type: none;
  padding-left: 0;
  margin-bottom: var(--space-md);
}

.product-features li {
  margin-bottom: var(--space-xs);
  padding-left: var(--space-md);
  position: relative;
  font-size: 0.9rem;
}

.product-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.product-description-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  align-items: center;
}

.product-description-grid.reversed {
  grid-template-columns: 1fr 1fr;
}

.product-description-content ul {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.product-description-content ul li {
  margin-bottom: var(--space-sm);
}

.product-description-image img {
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

/* Testimonials */
.testimonials-slider {
  max-width: 800px;
  margin: 0 auto;
}

.testimonial {
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 3rem;
  color: rgba(10, 25, 47, 0.1);
  font-family: serif;
}

.testimonial-content p {
  font-style: italic;
  margin-bottom: var(--space-md);
}

.testimonial-author {
  display: flex;
  flex-direction: column;
}

.testimonial-name {
  font-weight: 600;
  margin-bottom: 0;
}

.testimonial-company {
  color: var(--color-accent);
  font-size: 0.9rem;
  margin-top: 0;
}

/* CTA section */
.cta-section {
  background-color: var(--color-accent);
  color: var(--color-white);
  text-align: center;
}

.cta-content {
  max-width: 800px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.cta-content p {
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
}

.cta-content .btn {
  background-color: var(--color-white);
  color: var(--color-accent);
}

.cta-content .btn:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

/* Contact page */
.contact-hero {
  position: relative;
  padding: var(--space-xl) 0;
  background-color: var(--color-primary);
  color: var(--color-white);
  overflow: hidden;
}

.contact-hero-content {
  max-width: 600px;
  position: relative;
  z-index: 2;
}

.contact-hero-decoration {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 50%;
  z-index: 1;
  opacity: 0.2;
}

.decoration-shape {
  position: absolute;
  background-color: var(--color-white);
  border-radius: 50%;
}

.shape-1 {
  width: 150px;
  height: 150px;
  top: 20%;
  right: 10%;
}

.shape-2 {
  width: 100px;
  height: 100px;
  bottom: 30%;
  right: 30%;
}

.shape-3 {
  width: 80px;
  height: 80px;
  top: 40%;
  right: 35%;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

.contact-info {
  padding-right: var(--space-lg);
}

.contact-method {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--space-lg);
}

.contact-method i {
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-right: var(--space-md);
  margin-top: var(--space-xs);
}

.contact-text h3 {
  margin-bottom: var(--space-xs);
}

.contact-text p {
  margin-bottom: var(--space-xs);
}

.social-links {
  margin-top: var(--space-lg);
}

.social-icons {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

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

.social-icon:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.social-icon i {
  font-size: 1.2rem;
}

.contact-form-container {
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  font-size: 0.9rem;
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--space-sm);
  border: 1px solid #ddd;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(44, 62, 80, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  margin-top: var(--space-lg);
}

.form-checkbox input {
  margin-top: 0.25rem;
  margin-right: var(--space-sm);
}

.is-invalid {
  border-color: #dc3545;
}

.error-message {
  color: #dc3545;
  font-size: 0.85rem;
  margin-top: var(--space-xs);
}

/* Map section */
.map-container {
  height: 450px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* FAQ section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--space-md);
  border-bottom: 1px solid #eee;
  padding-bottom: var(--space-md);
}

.faq-question {
  cursor: pointer;
  padding: var(--space-sm) 0;
  font-size: 1.2rem;
  position: relative;
  margin-bottom: var(--space-sm);
}

.faq-question::after {
  content: '+';
  position: absolute;
  right: 0;
  top: var(--space-sm);
  font-weight: 700;
}

.faq-item.active .faq-question::after {
  content: '-';
}

.faq-answer {
  padding-bottom: var(--space-sm);
}

/* Thank you page */
.thank-you-section {
  padding: var(--space-xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.thank-you-content {
  max-width: 700px;
  margin: 0 auto;
  background-color: var(--color-white);
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 2;
}

.thank-you-icon {
  width: 80px;
  height: 80px;
  background-color: #28a745;
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  font-size: 2.5rem;
}

.thank-you-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.thank-you-info {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid #eee;
  text-align: left;
}

.thank-you-decoration {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

/* 404 page */
.error-section {
  padding: var(--space-xl) 0;
  display: flex;
  align-items: center;
  min-height: 60vh;
}

.error-content {
  text-align: center;
}

.error-content h1 {
  font-size: 6rem;
  color: var(--color-primary);
  margin: 0;
  line-height: 1;
}

.error-content h2 {
  font-size: 2rem;
  margin-bottom: var(--space-lg);
}

.error-actions {
  margin-top: var(--space-lg);
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

.popular-pages {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.popular-page {
  text-align: center;
  padding: var(--space-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.popular-page:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.popular-page i {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

/* Policy pages */
.policy-content {
  max-width: 900px;
  margin: 0 auto;
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.policy-content h2 {
  color: var(--color-primary);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid #eee;
}

.policy-content h3 {
  color: var(--color-accent);
  margin-top: var(--space-md);
}

.policy-content ul, 
.policy-content ol {
  margin-bottom: var(--space-md);
}

.policy-content li {
  margin-bottom: var(--space-xs);
}

/* Two column content */
.two-col-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.two-col-content.reversed {
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 768px) {
  .two-col-content,
  .two-col-content.reversed {
    grid-template-columns: 1fr;
  }
  
  .two-col-content.reversed .col:first-child {
    order: 2;
  }
  
  .two-col-content.reversed .col:last-child {
    order: 1;
  }
}

/* Eco tips */
.eco-tips {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.eco-tip {
  padding: var(--space-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.eco-tip i {
  font-size: 2rem;
  color: var(--color-darker);
  margin-bottom: var(--space-sm);
}

/* Certifications */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.certification {
  text-align: center;
  padding: var(--space-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.certification img {
  max-width: 150px;
  margin-bottom: var(--space-md);
}

/* Cookie popup */
.cookie-popup {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
  z-index: 1000;
}

.cookie-popup-content {
  padding: var(--space-lg);
}

.cookie-popup h3 {
  margin-top: 0;
}

.cookie-popup-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.cookie-more {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  text-decoration: underline;
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-lg) 0;
}

.footer a {
  color: var(--color-light);
}

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

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

.footer-heading {
  color: var(--color-white);
  margin-bottom: var(--space-md);
  position: relative;
  padding-bottom: var(--space-sm);
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--color-accent);
}

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

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

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

/* Responsive styles */
@media (max-width: 992px) {
  .product-description-grid,
  .product-description-grid.reversed {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    padding-right: 0;
    margin-bottom: var(--space-lg);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: 80%;
    max-width: 300px;
    background-color: var(--color-white);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform var(--transition-medium);
    box-shadow: var(--shadow-lg);
    padding: var(--space-xl) var(--space-lg);
  }
  
  .nav.active {
    transform: translateX(0);
  }
  
  .nav-menu {
    flex-direction: column;
    margin-top: var(--space-lg);
  }
  
  .nav-item {
    margin-left: 0;
    margin-bottom: var(--space-md);
  }
  
  .nav-link {
    font-size: 1.1rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .section {
    padding: var(--space-lg) 0;
  }
  
  .thank-you-actions {
    flex-direction: column;
  }
  
  .error-section {
    flex-direction: column;
    padding: var(--space-lg) 0;
  }
  
  .error-illustration {
    margin-top: var(--space-lg);
  }
}

@media (max-width: 576px) {
  html {
    font-size: 14px;
  }
  
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid,
  .eco-tips,
  .certifications-grid {
    grid-template-columns: 1fr;
  }
  
  .cookie-popup {
    bottom: 0;
    right: 0;
    width: 100%;
    max-width: none;
    border-radius: 0;
  }
}