:root {
  --primary-color: #3498db;
  --primary-hover: #2980b9;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --light-color: #ecf0f1;
  --dark-color: #34495e;
  --gray-color: #95a5a6;
  --light-gray: #f5f5f5;
  --text-color: #333;
  --white: #ffffff;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --border-radius: 4px;
  --transition: all 0.3s ease;
  --container-width: 1200px;
  --header-height: 80px;
  --font-size: 16px;
  --font-size-h1: 2.5rem;
  --font-size-h2: 2rem;
  --font-size-h3: 1.5rem;
  --font-size-h4: 1.25rem;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: var(--font-size);
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--white);
}

.font-increased body {
  font-size: calc(var(--font-size) * 1.2);
}

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

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* Buttons */
.btn-primary, .btn-secondary {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

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

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

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

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

.font-size-btn {
  padding: 0.5rem 1rem;
  background-color: var(--light-color);
  color: var(--secondary-color);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
}

.font-size-btn:hover {
  background-color: var(--gray-color);
  color: var(--white);
}

/* Header */
header {
  background-color: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.logo img {
  height: 50px;
  width: auto;
}

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

nav ul {
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: var(--secondary-color);
  font-weight: 600;
  position: relative;
}

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

nav a.active::after, nav a:hover::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
}

.cart-icon {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cart-icon::before {
  content: '🛒';
}

/* Hero Section */
.hero {
  background: linear-gradient(to right, #3498db, #2c3e50);
  color: var(--white);
  padding: 5rem 0;
  text-align: center;
}

.hero h1 {
  font-size: var(--font-size-h1);
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Advantages Section */
.advantages {
  padding: 5rem 0;
  background-color: var(--light-gray);
}

.advantages h2 {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: 3rem;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.advantage-item {
  background-color: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.advantage-item:hover {
  transform: translateY(-5px);
}

.advantage-icon {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.advantage-item h3 {
  margin-bottom: 1rem;
  font-size: var(--font-size-h3);
}

.stats-container {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.stat-item {
  text-align: center;
  padding: 1rem;
}

.stat-item h4 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.cta-container {
  text-align: center;
}

/* About Products Section */
.about-products {
  padding: 5rem 0;
  background-color: var(--white);
}

.about-products h2 {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: 2rem;
}

.about-text p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.quality-assurance, .company-story {
  margin-top: 2.5rem;
}

.quality-assurance h3, .company-story h3 {
  font-size: var(--font-size-h3);
  margin-bottom: 1rem;
}

.quality-assurance ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.quality-assurance li {
  margin-bottom: 0.5rem;
}

/* Products Section */
.products {
  padding: 5rem 0;
  background-color: var(--light-gray);
}

.products h2 {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: 3rem;
}

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

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

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

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

.product-card h3 {
  padding: 1.5rem 1.5rem 0.5rem;
  font-size: var(--font-size-h4);
}

.product-card .price {
  padding: 0 1.5rem;
  color: var(--accent-color);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.product-card p {
  padding: 0 1.5rem;
  margin-bottom: 1rem;
}

.product-actions {
  padding: 0 1.5rem 1.5rem;
  display: flex;
  justify-content: space-between;
}

/* Product Details Page */
.product-details {
  padding: 5rem 0;
}

.product-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}

.product-image img {
  width: 100%;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.product-info h1 {
  font-size: var(--font-size-h1);
  margin-bottom: 1rem;
}

.product-price {
  color: var(--accent-color);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.product-description {
  margin-bottom: 2rem;
}

.product-description h3 {
  font-size: var(--font-size-h4);
  margin: 1.5rem 0 0.75rem;
}

.product-description ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.product-description li {
  margin-bottom: 0.5rem;
}

.product-info .product-actions {
  display: flex;
  gap: 1rem;
  padding: 0;
}

/* Related Products */
.related-products {
  padding: 5rem 0;
  background-color: var(--light-gray);
}

.related-products h2 {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: 2rem;
}

/* Cart Page */
.cart-page {
  padding: 5rem 0;
}

.cart-page h1 {
  text-align: center;
  margin-bottom: 3rem;
}

.cart-empty {
  text-align: center;
  padding: 3rem;
}

.cart-empty p {
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
}

.cart-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
}

.cart-items {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.cart-item {
  display: grid;
  grid-template-columns: 80px 3fr 1fr 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--light-gray);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--border-radius);
}

.cart-item-info h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.cart-item-price {
  font-weight: 600;
}

.cart-item-quantity {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cart-item-quantity button {
  background-color: var(--light-gray);
  border: none;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

.cart-item-quantity span {
  font-weight: 600;
}

.cart-item-remove {
  color: var(--accent-color);
  cursor: pointer;
  background: none;
  border: none;
  font-size: 1.2rem;
}

.cart-summary {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.cart-total {
  margin-bottom: 2rem;
}

.cart-total h3 {
  font-size: var(--font-size-h3);
  margin-bottom: 1rem;
}

.cart-total p {
  margin-bottom: 0.5rem;
}

.total-price {
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: 1rem;
}

.cart-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Checkout Page */
.checkout-page {
  padding: 5rem 0;
}

.checkout-page h1 {
  text-align: center;
  margin-bottom: 3rem;
}

.checkout-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.checkout-summary {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.checkout-summary h2 {
  font-size: var(--font-size-h3);
  margin-bottom: 1.5rem;
}

.checkout-item {
  display: flex;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--light-gray);
}

.checkout-item:last-child {
  border-bottom: none;
}

.checkout-item-info {
  display: flex;
  gap: 1rem;
}

.checkout-item-info img {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--border-radius);
}

.checkout-item-details h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.checkout-item-price {
  text-align: right;
}

.checkout-total {
  text-align: right;
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--light-gray);
}

.checkout-form {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.checkout-form h2 {
  font-size: var(--font-size-h3);
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--gray-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: inherit;
}

.form-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
}

/* Success Page */
.success-page {
  padding: 5rem 0;
}

.success-message {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 3rem;
}

.success-icon {
  color: #2ecc71;
  margin-bottom: 2rem;
}

.success-message h1 {
  font-size: var(--font-size-h2);
  margin-bottom: 1.5rem;
  color: #2ecc71;
}

.success-message p {
  margin-bottom: 1rem;
}

.success-actions {
  margin-top: 2rem;
}

/* Contact Page */
.contact-page {
  padding: 5rem 0;
}

.contact-page h1 {
  text-align: center;
  margin-bottom: 3rem;
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info, .contact-form {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.contact-info h2, .contact-form h2 {
  font-size: var(--font-size-h3);
  margin-bottom: 1.5rem;
}

.contact-details {
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-icon {
  color: var(--primary-color);
}

.contact-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.social-contact h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.social-icons {
  display: flex;
  gap: 1rem;
}

.social-icons a {
  color: var(--secondary-color);
  transition: var(--transition);
  font-size: 1.5rem;
}

.social-icons a:hover {
  color: var(--primary-color);
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  padding-left: 25px;
  cursor: pointer;
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: 2px;
  left: 0;
  height: 18px;
  width: 18px;
  background-color: var(--light-gray);
  border-radius: 3px;
}

.checkbox-container:hover input ~ .checkmark {
  background-color: var(--gray-color);
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--primary-color);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
  display: block;
}

.checkbox-container .checkmark:after {
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* About Page */
.about-hero {
  background: linear-gradient(to right, #3498db, #2c3e50);
  color: var(--white);
  padding: 5rem 0;
  text-align: center;
}

.about-hero h1 {
  font-size: var(--font-size-h1);
  margin-bottom: 1rem;
}

.about-section {
  padding: 5rem 0;
}

.about-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.about-column h2 {
  font-size: var(--font-size-h2);
  margin-bottom: 1.5rem;
}

.about-column p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.values-section {
  padding: 5rem 0;
  background-color: var(--light-gray);
}

.values-section h2 {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: 3rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.value-item {
  background-color: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.value-item:hover {
  transform: translateY(-5px);
}

.value-icon {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.value-item h3 {
  margin-bottom: 1rem;
  font-size: var(--font-size-h3);
}

.team-section {
  padding: 5rem 0;
}

.team-section h2 {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: 1.5rem;
}

.team-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3rem;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.team-member {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

.team-member:hover {
  transform: translateY(-5px);
}

.team-member img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.team-member h3 {
  padding: 1.5rem 1.5rem 0.5rem;
  font-size: var(--font-size-h4);
}

.team-member p {
  padding: 0 1.5rem;
  margin-bottom: 0.5rem;
}

.team-member p:first-of-type {
  color: var(--primary-color);
  font-weight: 600;
}

.member-social {
  padding: 0 1.5rem 1.5rem;
  display: flex;
  gap: 1rem;
}

.certifications-section {
  padding: 5rem 0;
  background-color: var(--light-gray);
}

.certifications-section h2 {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: 3rem;
}

.certifications-content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
}

.certification-text {
  max-width: 800px;
}

.certification-text p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.certification-text ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.certification-text li {
  margin-bottom: 0.5rem;
}

/* Footer */
footer {
  background-color: var(--secondary-color);
  color: var(--light-color);
  padding: 4rem 0 2rem;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-column h4 {
  font-size: var(--font-size-h4);
  margin-bottom: 1.5rem;
  color: var(--white);
}

.footer-column p {
  margin-bottom: 0.5rem;
  opacity: 0.8;
}

.footer-column ul li {
  margin-bottom: 0.5rem;
}

.footer-column ul li a {
  color: var(--light-color);
  opacity: 0.8;
  transition: var(--transition);
}

.footer-column ul li a:hover {
  opacity: 1;
  color: var(--primary-color);
}

.footer-column .social-icons {
  margin-top: 1rem;
}

.footer-column .social-icons a {
  color: var(--light-color);
  opacity: 0.8;
}

.footer-column .social-icons a:hover {
  opacity: 1;
  color: var(--primary-color);
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.8;
}

/* Cookie Notice */
.cookie-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(52, 73, 94, 0.95);
  color: var(--white);
  padding: 1rem 0;
  z-index: 9999;
  display: none;
}

.cookie-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.cookie-content p {
  margin-bottom: 1rem;
  text-align: center;
}

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

.cookie-link {
  color: var(--light-color);
  text-decoration: underline;
  margin-left: 1rem;
}

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

/* Notification */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  background-color: var(--primary-color);
  color: var(--white);
  box-shadow: var(--shadow);
  z-index: 1000;
  transform: translateX(200%);
  transition: transform 0.3s ease;
}

.notification.show {
  transform: translateX(0);
}

.notification.success {
  background-color: #2ecc71;
}

.notification.error {
  background-color: var(--accent-color);
}

/* Responsive Design */
@media (max-width: 992px) {
  .product-container {
    grid-template-columns: 1fr;
  }
  
  .about-columns, .contact-container, .checkout-container {
    grid-template-columns: 1fr;
  }
  
  .cart-content {
    grid-template-columns: 1fr;
  }
  
  .certifications-content {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  header .container {
    flex-direction: column;
    padding: 1rem;
  }
  
  header {
    height: auto;
    position: relative;
  }
  
  nav ul {
    margin: 1rem 0;
  }
  
  .font-size-btn {
    margin-bottom: 1rem;
  }
  
  .cart-item {
    grid-template-columns: 60px 1fr;
  }
  
  .cart-item-quantity, .cart-item-price {
    grid-column: 2;
  }
  
  .cart-item-remove {
    grid-column: 1 / -1;
    justify-self: end;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .advantage-item, .value-item {
    padding: 1.5rem;
  }
}

@media (max-width: 576px) {
  nav ul {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .hero {
    padding: 3rem 0;
  }
  
  .products, .advantages, .about-products, .about-section, .values-section, .team-section, .contact-page, .cart-page, .checkout-page {
    padding: 3rem 0;
  }
  
  .product-card h3, .product-info h1 {
    font-size: 1.5rem;
  }
  
  .form-actions {
    flex-direction: column;
    gap: 1rem;
  }
  
  .form-actions a, .form-actions button {
    width: 100%;
    text-align: center;
  }
  
  .cookie-content {
    flex-direction: column;
  }
  
  .cookie-buttons {
    margin-top: 1rem;
  }
}

/* Semi-transparent Elements */
.advantage-item, .product-card, .cart-summary, .checkout-summary, .checkout-form, .contact-info, .contact-form, .team-member, .value-item {
  background-color: rgba(255, 255, 255, 0.9);
}

.cookie-notice {
  background-color: rgba(52, 73, 94, 0.95);
}

.hero, .about-hero {
  background: linear-gradient(to right, rgba(52, 152, 219, 0.95), rgba(44, 62, 80, 0.95));
}

.notification {
  background-color: rgba(52, 152, 219, 0.95);
}

.notification.success {
  background-color: rgba(46, 204, 113, 0.95);
}

.notification.error {
  background-color: rgba(231, 76, 60, 0.95);
}