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

body {
  font-family: 'Roboto', sans-serif;
  color: #2c3e50;
  background-color: #fafafa;
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header and navigation */
.site-header {
  background-color: #0d47a1;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-weight: 700;
  font-size: 1.5rem;
  color: #fff;
  text-decoration: none;
  letter-spacing: 1px;
}

.main-nav {
  position: relative;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.2rem;
}

.main-nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 400;
  transition: color 0.2s;
}

.main-nav a:hover {
  color: #bbdefb;
}

/* Active navigation link */
.main-nav a.active {
  border-bottom: 2px solid #bbdefb;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
}

/* Hero section */
.hero {
  position: relative;
  background-image: url('../images/hero.png');
  background-size: cover;
  background-position: center;
  height: 60vh;
  display: flex;
  align-items: center;
  color: #fff;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(13, 71, 161, 0.7);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.8rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
}

.btn {
  display: inline-block;
  background-color: #1976d2;
  color: #fff;
  padding: 0.6rem 1.4rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: #1565c0;
}

/* Intro section */
.intro-section {
  padding: 3rem 0;
}

.intro-section h2 {
  margin-bottom: 0.6rem;
  color: #0d47a1;
}

.intro-section p {
  margin-bottom: 1.5rem;
}

/* Footer */
.site-footer {
  background-color: #0d47a1;
  color: #fff;
  text-align: center;
  padding: 1rem 0;
  margin-top: 3rem;
}

.site-footer p {
  margin: 0;
}

/* Responsive styling */
@media (max-width: 768px) {
  .main-nav ul {
    flex-direction: column;
    background-color: #0d47a1;
    position: absolute;
    right: 0;
    top: 60px;
    width: 200px;
    display: none;
    padding: 0.5rem 0;
    border-radius: 0 0 0 4px;
  }
  .main-nav.open ul {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
}