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

:root {
  --primary-color: #0a1628;
  --secondary-color: #1a365d;
  --accent-color: #2563eb;
  --text-color: #333;
  --light-text: #666;
  --white: #fff;
  --light-bg: #f8fafc;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

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

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

.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--white);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 5px solid var(--primary-color);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
  background: transparent;
}

.header.dark {
  background: rgba(10, 22, 40, 0.95);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
}

.logo a {
  color: var(--white);
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: bold;
}

.header.dark .logo a {
  color: var(--white);
}

.nav-menu ul {
  display: flex;
  list-style: none;
}

.nav-menu a {
  color: var(--white);
  text-decoration: none;
  padding: 10px 20px;
  transition: var(--transition);
  font-weight: 500;
}

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

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

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--white);
  margin: 3px 0;
  transition: var(--transition);
}

.header.dark .hamburger span {
  background: var(--white);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 20px;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 20px;
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 40px;
  opacity: 0.9;
  animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
  animation: fadeInUp 1s ease 0.4s both;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  text-decoration: none;
  border-radius: 5px;
  font-weight: 600;
  transition: var(--transition);
  margin: 0 10px;
}

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

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

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

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

.hero-stats {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 60px;
  margin-top: 60px;
  animation: fadeInUp 1s ease 0.6s both;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--white);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

.section {
  padding: 80px 0;
}

.section.bg-dark {
  background: var(--primary-color);
  color: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.section.bg-dark .section-header h2 {
  color: var(--white);
}

.section-header p {
  color: var(--light-text);
  font-size: 1.1rem;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.about-text p {
  margin-bottom: 20px;
  color: var(--light-text);
}

.about-features {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 20px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--light-bg);
  padding: 10px 20px;
  border-radius: 25px;
}

.feature-icon {
  font-size: 1.2rem;
}

.about-image img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background: var(--white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
  height: 250px;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-card:hover .product-image img {
  transform: scale(1.1);
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.product-desc {
  color: var(--light-text);
  font-size: 0.9rem;
  display: none;
}

.product-card.expanded .product-desc {
  display: block;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.service-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-5px);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.service-card h3 {
  margin-bottom: 10px;
  color: var(--white);
}

.service-card p {
  color: rgba(255, 255, 255, 0.7);
}

.why-us-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.why-us-item {
  text-align: center;
  padding: 30px;
  background: var(--light-bg);
  border-radius: 10px;
  transition: var(--transition);
}

.why-us-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.why-us-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.why-us-item h3 {
  margin-bottom: 10px;
  color: var(--primary-color);
}

.why-us-item p {
  color: var(--light-text);
}

.company-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.company-info-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.company-info-item h3 {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.company-info-item p {
  color: var(--white);
  font-weight: 600;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.contact-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-item h3 {
  margin-bottom: 5px;
  color: var(--primary-color);
}

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

.contact-item a {
  color: var(--accent-color);
  text-decoration: none;
}

.contact-form {
  background: var(--light-bg);
  padding: 30px;
  border-radius: 10px;
}

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

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
  color: var(--primary-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
}

.contact-form .btn {
  margin: 0;
  width: 100%;
}

.form-response {
  margin-top: 15px;
  padding: 10px;
  border-radius: 5px;
  display: none;
}

.form-response.success {
  background: #d4edda;
  color: #155724;
  display: block;
}

.form-response.error {
  background: #f8d7da;
  color: #721c24;
  display: block;
}

.map-container {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.footer {
  background: var(--primary-color);
  color: var(--white);
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h3 {
  margin-bottom: 20px;
  color: var(--white);
}

.footer-section p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 10px;
}

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

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section ul li a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--accent-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  font-size: 1.2rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 1000;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--secondary-color);
  transform: translateY(-5px);
}

.section > .container > h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.section > .container > h2 {
  font-size: 1.8rem;
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.section > .container > p {
  color: var(--light-text);
  margin-bottom: 15px;
}

.section > .container > ul {
  margin-left: 20px;
  margin-bottom: 15px;
}

.section > .container > ul li {
  color: var(--light-text);
  margin-bottom: 10px;
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.scroll-reveal.active {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-stats {
    gap: 30px;
    flex-wrap: wrap;
  }
  
  .stat-number {
    font-size: 1.8rem;
  }
  
  .btn {
    margin: 10px;
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 60px;
    left: -100%;
    width: 100%;
    background: var(--primary-color);
    padding: 20px;
    transition: var(--transition);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-menu ul {
    flex-direction: column;
  }
  
  .nav-menu ul li {
    margin-bottom: 15px;
  }
  
  .hamburger {
    display: flex;
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .why-us-grid {
    grid-template-columns: 1fr;
  }
  
  .company-info-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .section-header h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .hero-title {
    font-size: 1.8rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section {
    padding: 50px 0;
  }
  
  .footer {
    padding: 40px 0 20px;
  }
}