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

:root {
  --primary-bg: #0a0a0a;
  --secondary-bg: #1a1a1a;
  --card-bg: #242424;
  --accent-color: #2563eb;
  --accent-hover: #1d4ed8;
  --text-primary: #ffffff;
  --text-secondary: #b3b3b3;
  --border-color: #333333;
}

html {
  height: 100%;
  width: 100%;
  scroll-behavior: smooth;
}

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

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  border-radius: 6px;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: bold;
}

.accent {
  color: var(--accent-color);
}

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

.nav-menu a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Language Switch */
.language-switch {
  margin-left: 1rem;
}

.lang-btn {
  background-color: var(--accent-color);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
  transition: all 0.3s ease;
}

.lang-btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
}

/* Main Content */
main {
  padding-top: 80px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
  padding: 8rem 2rem 6rem;
  text-align: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: 1rem 2rem;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: all 0.3s ease;
}

.cta-button:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
}

/* Services Section */
.services {
  padding: 6rem 0;
  background-color: var(--secondary-bg);
}

.services h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

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

.service-card {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

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

.service-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.service-features {
  list-style: none;
}

.service-features li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
}

.service-features li::before {
  content: "✓";
  color: var(--accent-color);
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* About Section */
.about {
  padding: 6rem 0;
  background-color: var(--primary-bg);
}

.about h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.stat {
  text-align: center;
  padding: 1.5rem;
  background-color: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.stat h3 {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.stat p {
  color: var(--text-secondary);
}

/* Expertise Grid */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
  margin-top: 3rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

.expertise-card {
  background-color: var(--card-bg);
  padding: 2.5rem 2rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  min-height: 250px;
}

.expertise-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.expertise-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.expertise-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent-color);
  text-align: center;
}

.expertise-features {
  list-style: none;
  flex-grow: 1;
}

.expertise-features li {
  padding: 0.7rem 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
}

.expertise-features li::before {
  content: "✓";
  color: var(--accent-color);
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* Contact Section */
.contact {
  padding: 6rem 0;
  background-color: var(--secondary-bg);
}

.contact h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.contact-content {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
}

.contact-info {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: center;
}

.contact-item {
  padding: 1.5rem;
  background-color: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.contact-item h3 {
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

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

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

.contact-item p a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-form input,
.contact-form textarea {
  padding: 1rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
}

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

.submit-btn {
  padding: 1rem 2rem;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
}

.submit-btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
}

/* Footer */
footer {
  background-color: var(--primary-bg);
  padding: 2rem 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

footer p {
  color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .language-switch {
    margin-left: 0;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-content p {
    font-size: 1rem;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    flex-direction: column;
    align-items: center;
  }
  
  .contact-info {
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    max-width: 400px;
  }
  
  .stats {
    grid-template-columns: 1fr;
  }
  
  .expertise-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 500px;
  }
  
  .nav-container {
    padding: 1rem;
  }
  
  .container {
    padding: 0 1rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 6rem 1rem 4rem;
  }
  
  .services, .about, .contact {
    padding: 4rem 0;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
}