:root {
  --primary-color: #4DA8DA;
  --primary-dark: #0078C1;
  --primary-light: #A8D5F0;
  --secondary-color: #003B73;
  --accent-color: #F0F8FF;
  --text-color: #333333;
  --text-light: #666666;
  --background-color: #FFFFFF;
  --gradient-primary: linear-gradient(135deg, #4DA8DA 0%, #0078C1 100%);
  --gradient-hero: linear-gradient(135deg, #0078C1 0%, #003B73 50%, #001d3d 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-weight: 700;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
  position: relative;
}

/* Header & Navigation */
.header {
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo-container {
  display: flex;
  align-items: center;
}

.logo {
  height: 50px;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}

.nav-links li a {
  font-weight: 500;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  color: var(--secondary-color);
  position: relative;
  transition: var(--transition);
}

.nav-links li a:hover {
  background-color: var(--accent-color);
  color: var(--primary-dark);
}

.nav-links li a.active {
  background-color: var(--accent-color);
  color: var(--primary-dark);
}

.nav-links li a.active::after {
  width: 60%;
}

.nav-links li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-links li a:hover::after {
  width: 60%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--secondary-color);
  padding: 0.5rem;
  border-radius: 8px;
  transition: var(--transition);
}

.mobile-menu-btn:hover {
  background-color: var(--accent-color);
}

/* Hero Section */
.hero {
  background: var(--gradient-hero);
  padding: 10rem 0 6rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  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='0.03'%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");
  opacity: 0.5;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: 0;
  right: 0;
  height: 100px;
  background: white;
  transform: skewY(-2deg);
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.hero-text {
  flex: 1;
  padding-right: 3rem;
}

.hero-text .badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  position: relative;
}

.hero-image img {
  max-width: 400px;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  color: white;
  line-height: 1.2;
  font-weight: 800;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  text-align: center;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: white;
  color: var(--primary-dark);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  color: var(--primary-dark);
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: white;
  background: transparent;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  color: white;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
}

/* Section Titles */
.section-title {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-title p {
  max-width: 600px;
  margin: 0 auto 1.5rem;
  font-size: 1.1rem;
}

.section-title .divider {
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  margin: 0 auto;
  border-radius: 2px;
}

/* About Section */
.about {
  background-color: white;
}

.about-content {
  display: flex;
  align-items: flex-start;
  gap: 4rem;
}

.about-text {
  flex: 1;
}

.about-text h3 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--primary-dark);
}

.about-text p {
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-cards {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-primary);
  transform: scaleY(0);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  transform: scaleY(1);
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

.card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* Services Section */
.services {
  background: linear-gradient(180deg, var(--accent-color) 0%, white 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.service-card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: 2.5rem;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: var(--gradient-primary);
  opacity: 0.05;
  border-radius: 50%;
  transform: translate(30%, -30%);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::after {
  transform: translate(20%, -20%) scale(1.5);
}

.service-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient-primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.service-icon i {
  font-size: 1.75rem;
  color: white;
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
  color: var(--secondary-color);
}

.service-card p {
  font-size: 0.95rem;
  line-height: 1.7;
}

.service-card.featured {
  border: 2px solid var(--primary-color);
  background: linear-gradient(135deg, rgba(77, 168, 218, 0.05) 0%, rgba(0, 120, 193, 0.05) 100%);
}

.service-card.featured::before {
  content: 'NEW';
  position: absolute;
  top: -10px;
  right: 20px;
  background: var(--gradient-primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* Contact Section */
.contact {
  background: white;
}

.contact-content {
  display: flex;
  gap: 4rem;
}

.contact-form {
  flex: 1;
  background: var(--accent-color);
  padding: 3rem;
  border-radius: var(--border-radius);
}

.contact-info {
  flex: 1;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--secondary-color);
}

.form-control {
  width: 100%;
  padding: 1rem;
  border: 2px solid transparent;
  border-radius: 10px;
  font-family: inherit;
  font-size: 1rem;
  background: white;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(77, 168, 218, 0.1);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

.contact-info h3 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.contact-info-item {
  display: flex;
  margin-bottom: 1.5rem;
  align-items: flex-start;
}

.contact-info-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  flex-shrink: 0;
}

.contact-info-icon i {
  color: white;
  font-size: 1.25rem;
}

.contact-info-item div h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.contact-info-item div p {
  margin-bottom: 0;
  color: var(--text-light);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.social-link {
  width: 45px;
  height: 45px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: var(--transition);
}

.social-link:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  color: white;
}

/* Customers Section */
.customers {
  background: var(--accent-color);
}

.customers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 2rem;
  align-items: center;
  justify-items: center;
}

.customer-logo {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  width: 100%;
}

.customer-logo:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.customer-logo img {
  max-width: 150px;
  max-height: 80px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: var(--transition);
}

.customer-logo:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* Footer */
.footer {
  background: var(--gradient-hero);
  color: white;
  padding: 5rem 0 2rem;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: -50px;
  left: 0;
  right: 0;
  height: 100px;
  background: white;
  transform: skewY(-2deg);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-column h3 {
  color: white;
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.footer-column h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
}

.footer-column p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
}

.footer-column .logo {
  margin-bottom: 1.5rem;
  filter: brightness(0) invert(1);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: flex-start;
}

.footer-links li i {
  margin-right: 0.75rem;
  color: var(--primary-color);
  margin-top: 0.25rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
  padding-left: 5px;
}

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

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0;
}

.footer .social-links {
  margin-top: 1.5rem;
}

.footer .social-link {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer .social-link:hover {
  background: white;
  color: var(--primary-dark);
}

/* Stats Section */
.stats {
  background: var(--gradient-primary);
  padding: 4rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item h3 {
  font-size: 3rem;
  color: white;
  margin-bottom: 0.5rem;
}

.stat-item p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.75rem;
  }
  
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-text {
    padding-right: 0;
    margin-bottom: 3rem;
  }
  
  .btn-group {
    justify-content: center;
  }
  
  .about-content {
    flex-direction: column;
  }
  
  .about-text {
    padding-right: 0;
    margin-bottom: 2rem;
  }
  
  .contact-content {
    flex-direction: column;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 4rem 0;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-md);
    gap: 0;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-links li a {
    display: block;
    padding: 1rem;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero {
    padding: 8rem 0 4rem;
    min-height: auto;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .hero-image img {
    max-width: 250px;
  }
  
  .section-title h2 {
    font-size: 2rem;
  }
  
  .about-cards {
    grid-template-columns: 1fr;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-column h3::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .footer .social-links {
    justify-content: center;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .stat-item h3 {
    font-size: 2.5rem;
  }
}

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

.animate-on-scroll {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

/* Scroll to top button */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

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