:root {
  --color-primary: #4f7290;
  --color-secondary: #ffffff;
  --color-accent: #2c3e50;
  --color-text: #333333;
  --color-border: #e0e0e0;
  --color-bg: #fafafa;
}

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

body {
  font-family: 'Montserrat', sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-secondary);
}

html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Header */
header {
  background-color: var(--color-primary);
  color: var(--color-secondary);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.header-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: opacity 0.2s;
}

nav a:hover {
  opacity: 0.8;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-secondary);
  font-size: 1.5rem;
  cursor: pointer;
}

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

/* Homepage hero */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 3rem;
}

.hero-text h1 {
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text);
}

.hero-image {
  text-align: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.hero-image-caption {
  margin-top: 1rem;
  font-weight: 600;
  color: var(--color-accent);
  font-size: 1rem;
}

/* Content pages */
h1 {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  margin-top: 2rem;
}

h1:first-child {
  margin-top: 0;
}

h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.2rem;
  color: var(--color-accent);
  margin-top: 1rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 2px solid var(--color-accent);
  transition: background-color 0.2s;
}

a:hover {
  background-color: rgba(79, 114, 144, 0.1);
}

/* Footer */
footer {
  background-color: var(--color-primary);
  color: var(--color-secondary);
  padding: 2rem;
  margin-top: auto;
  text-align: center;
  font-size: 0.95rem;
}

footer a {
  color: var(--color-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

footer a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-content p {
  margin: 0.5rem 0;
}

/* Responsive */
@media (max-width: 768px) {
  .header-container {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .header-title {
    width: 100%;
    font-size: 1.25rem;
  }

  nav ul {
    gap: 1rem;
    width: 100%;
    flex-direction: column;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-text h1 {
    font-size: 1.75rem;
  }

  .container {
    padding: 1rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  nav ul {
    gap: 0.75rem;
    font-size: 0.9rem;
  }

  nav a {
    font-size: 0.85rem;
  }

  .hero-text h1 {
    font-size: 1.5rem;
  }

  .hero-text p {
    font-size: 1rem;
  }
}