/* ===== CSS Variables ===== */
:root {
  --primary: #1e40af;
  --primary-dark: #1e3a8a;
  --primary-light: #3b82f6;
  --secondary: #64748b;
  --dark: #0f172a;
  --light: #f8fafc;
  --white: #ffffff;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--white);
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

/* ===== Utility Classes ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-full {
  width: 100%;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: var(--dark);
}

.section-subtitle {
  text-align: center;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto 48px;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: transparent;
  transition: var(--transition);
  padding: 20px 0;
}

.navbar.scrolled {
  background-color: var(--white);
  box-shadow: var(--shadow);
  padding: 12px 0;
}

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

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

.navbar.scrolled .logo {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--white);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-light);
  transition: var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

.navbar.scrolled .nav-links a {
  color: var(--dark);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--white);
  transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
  background-color: var(--dark);
}

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  background-image: url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.9) 0%, rgba(30, 58, 138, 0.85) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--white);
  max-width: 800px;
  padding: 20px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 40px;
  line-height: 1.7;
}

/* ===== About Section ===== */
.about {
  background-color: var(--white);
}

.about-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}

.about-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--dark);
}

.about-content {
  max-width: 800px;
}

.about-content p {
  color: var(--gray-600);
  margin-bottom: 16px;
  font-size: 1.1rem;
  line-height: 1.8;
}

/* ===== Services Section ===== */
.services {
  background-color: var(--gray-100);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.service-card {
  background-color: var(--white);
  padding: 32px;
  border-radius: 12px;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

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

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--gray-100);
  border-radius: 50%;
  color: var(--primary);
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--dark);
}

.service-card p {
  color: var(--gray-500);
  font-size: 0.95rem;
}

/* ===== Geography Section ===== */
.geography {
  background-color: var(--white);
}

.geography-note {
  text-align: center;
  color: var(--gray-500);
  font-style: italic;
}

.geography-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.location-card {
  background-color: var(--gray-100);
  padding: 24px;
  border-radius: 12px;
  text-align: center;
  transition: var(--transition);
}

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

.location-card:hover p {
  color: rgba(255, 255, 255, 0.8);
}

.location-flag {
  font-size: 3rem;
  margin-bottom: 12px;
}

.location-card h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.location-card p {
  font-size: 0.9rem;
  color: var(--gray-500);
  transition: var(--transition);
}

/* ===== Advantages Section ===== */
.advantages {
  background-color: var(--primary-dark);
  background-image: url('https://images.unsplash.com/photo-1494412574643-ff11b0a5c1c3?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
}

.advantages::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.92) 0%, rgba(30, 64, 175, 0.88) 100%);
}

.advantages > .container {
  position: relative;
  z-index: 1;
}

.advantages .section-title {
  color: var(--white);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: var(--white);
  padding: 24px;
  border-radius: 12px;
  transition: var(--transition);
}

.advantage-item:hover {
  box-shadow: var(--shadow);
}

.advantage-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary);
  color: var(--white);
  border-radius: 12px;
}

.advantage-content h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
  color: var(--dark);
}

.advantage-content p {
  color: var(--gray-500);
  font-size: 0.95rem;
}

/* ===== Contact Section ===== */
.contact {
  background-color: var(--gray-100);
  background-image: url('https://images.unsplash.com/photo-1524661135-423995f22d0b?ixlib=rb-4.0.3&auto=format&fit=crop&w=2074&q=80');
  background-size: cover;
  background-position: center;
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(241, 245, 249, 0.95);
}

.contact > .container {
  position: relative;
  z-index: 1;
}

.contact-card {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--white);
  padding: 48px;
  border-radius: 16px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.company-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.company-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.company-address {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.company-address svg {
  color: var(--primary);
}

.company-address p {
  color: var(--gray-600);
  line-height: 1.8;
  font-size: 1.05rem;
}

.company-contact {
  margin-top: 8px;
}

.contact-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.contact-item svg {
  flex-shrink: 0;
  color: var(--primary);
}

.contact-item p {
  color: var(--gray-600);
  font-size: 1.05rem;
}

/* ===== Footer ===== */
.footer {
  background-color: var(--dark);
  color: var(--gray-400);
  padding: 24px 0;
  text-align: center;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    padding-top: 0;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--white);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 24px;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .nav-links a {
    color: var(--dark);
    font-size: 1.1rem;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .about-wrapper {
    grid-template-columns: 1fr;
  }
  
  .about-image img {
    height: 300px;
  }
  
  .about-title {
    font-size: 1.75rem;
    text-align: center;
  }
  
  .about-content {
    text-align: center;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .geography-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .advantages-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .geography-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: 1.875rem;
  }
  
  .btn {
    padding: 12px 24px;
  }
}