:root {
  --primary: #1a365d;
  --secondary: #2d3748;
  --background: #f7fafc;
  --footer-bg: #1a365d;
  --accent: #d69e2e;
  --section-bg-1: #e2e8f0;
  --section-bg-2: #edf2f7;
  --section-bg-3: #ffffff;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --text-primary: var(--secondary);
  --text-secondary: #4a5568;
  --text-light: #f7fafc;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --radius-sm: 0.125rem;
  --radius-md: 0.25rem;
  --radius-lg: 0.5rem;
}

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.7;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--primary);
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 2.5rem;
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 65ch;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 500;
}

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

.section {
  padding: 5rem 0;
}

.section-bg-1 {
  background-color: var(--section-bg-1);
}

.section-bg-2 {
  background-color: var(--section-bg-2);
}

.section-bg-3 {
  background-color: var(--section-bg-3);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--primary);
  border: 2px solid var(--accent);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-outline:hover {
  background-color: var(--accent);
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

.card {
  background-color: var(--section-bg-3);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 1.5rem;
}

.navbar {
  background-color: var(--primary);
  padding: 1rem 0;
}

.navbar-brand {
  color: var(--text-light);
  font-weight: 700;
  font-size: 1.25rem;
}

.nav-link {
  color: var(--text-light);
  opacity: 0.9;
  margin-left: 1.5rem;
  transition: var(--transition);
}

.nav-link:hover {
  opacity: 1;
  color: var(--accent);
  text-decoration: none;
}

.footer {
  background-color: var(--footer-bg);
  color: var(--text-light);
  padding: 3rem 0;
}

.footer a {
  color: var(--text-light);
  opacity: 0.8;
}

.footer a:hover {
  color: var(--accent);
  opacity: 1;
  text-decoration: none;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  .navbar {
    padding: 0.75rem 0;
  }
}