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

html {
  height: 100%;
  width: 100%;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.navbar {
  background-color: #2c3e50;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

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

.nav-menu a {
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
  transition: background-color 0.3s;
  border-radius: 4px;
}

.nav-menu a:hover,
.nav-menu a.active {
  background-color: #34495e;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  flex: 1;
}

.hero-section {
  background: white;
  padding: 3rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.hero-section h1 {
  color: #2c3e50;
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.hero-section h3 {
  color: #3498db;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  font-weight: normal;
}

.hero-section p {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  color: #555;
}

.hero-image {
  width: 100%;
  max-width: 800px;
  height: auto;
  margin-top: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

footer {
  background-color: #2c3e50;
  color: white;
  text-align: center;
  padding: 1.5rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-menu {
    gap: 1rem;
  }

  .hero-section {
    padding: 1.5rem;
  }

  .hero-section h1 {
    font-size: 2rem;
  }

  .hero-section h3 {
    font-size: 1.2rem;
  }
}