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

:root {
  --primary-color: #2563eb;
  --secondary-color: #1e40af;
  --accent-color: #f59e0b;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f9fafb;
  --white: #ffffff;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

.navbar {
  padding: 1rem 0;
}

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

.logo h1 {
  color: var(--primary-color);
  font-size: 1.5rem;
  font-weight: 700;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  transition: 0.3s;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  padding: 120px 20px 80px;
  text-align: center;
}

.hero-content h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero-content p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.cta-button {
  display: inline-block;
  background: var(--accent-color);
  color: var(--white);
  padding: 1rem 2.5rem;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: var(--shadow-lg);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

/* Products Section */
.products {
  padding: 80px 20px;
  background: var(--bg-light);
}

.products h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.product-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: var(--shadow);
}

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

.product-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.product-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.product-card p {
  color: var(--text-light);
  line-height: 1.7;
}

/* About Section */
.about {
  padding: 80px 20px;
  background: var(--white);
}

.about h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--text-dark);
}

.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.about-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.features {
  margin-top: 3rem;
  display: grid;
  gap: 1.5rem;
}

.feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: 8px;
  border-left: 4px solid var(--primary-color);
}

.feature-icon {
  background: var(--primary-color);
  color: var(--white);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: bold;
}

.feature h4 {
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  font-size: 1.2rem;
}

.feature p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* Contact Section */
.contact {
  padding: 80px 20px;
  background: var(--bg-light);
}

.contact h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.contact-item h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.contact-item p {
  color: var(--text-light);
  line-height: 1.7;
}

.contact-item a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.contact-item a:hover {
  text-decoration: underline;
}

.contact-form {
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.contact-form h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem;
  margin-bottom: 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

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

.submit-button {
  width: 100%;
  background: var(--primary-color);
  color: var(--white);
  padding: 1rem;
  border: none;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s;
}

.submit-button:hover {
  background: var(--secondary-color);
}

/* Footer */
footer {
  background: var(--text-dark);
  color: var(--white);
  padding: 3rem 20px 1rem;
}

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

.footer-section h3 {
  margin-bottom: 1rem;
  color: var(--accent-color);
}

.footer-section h4 {
  margin-bottom: 1rem;
  color: var(--white);
}

.footer-section p {
  color: #9ca3af;
  line-height: 1.7;
}

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

.footer-section ul li {
  margin-bottom: 0.5rem;
  color: #9ca3af;
}

.footer-section ul li a {
  color: #9ca3af;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-section ul li a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 1.5rem;
  text-align: center;
  color: #9ca3af;
}

/* Animation for scroll effects */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1rem 0;
    box-shadow: var(--shadow);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu li {
    text-align: center;
    padding: 0.5rem 0;
  }

  .hero-content h2 {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1rem;
  }

  .products h2,
  .about h2,
  .contact h2 {
    font-size: 2rem;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .logo h1 {
    font-size: 1.2rem;
  }

  .hero {
    padding: 80px 20px 60px;
  }

  .hero-content h2 {
    font-size: 1.75rem;
  }
}