/* Base styles for AI Website */
:root {
  --primary-color: #2a2a72;
  --secondary-color: #009ffd;
  --background: #f6f6f6;
  --text-color: #222;
  --nav-height: 60px;
  --nav-bg: #fff;
  --nav-link-color: var(--primary-color);
  --nav-link-hover: var(--secondary-color);
  --border-radius: 8px;
  --font-family: 'Segoe UI', Arial, sans-serif;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--background);
  color: var(--text-color);
}

nav {
  height: var(--nav-height);
  background: var(--nav-bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--nav-link-color);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: background 0.2s, color 0.2s;
}

.nav-links a:hover {
  background: var(--secondary-color);
  color: #fff;
}

/* Hamburger menu styles */
.nav-toggle {
  display: none;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  width: 30px;
  height: 30px;
  justify-content: center;
  align-items: center;
}

.nav-hamburger span {
  height: 4px;
  width: 100%;
  background: var(--primary-color);
  margin: 4px 0;
  border-radius: 2px;
  transition: 0.3s;
}

@media (max-width: 768px) {
  nav {
    padding: 0 1rem;
  }
  .nav-links {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--nav-bg);
    flex-direction: column;
    gap: 0;
    display: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  }
  .nav-links a {
    padding: 1rem 2rem;
    border-radius: 0;
    border-bottom: 1px solid #eee;
  }
  .nav-toggle:checked + .nav-hamburger + .nav-links {
    display: flex;
  }
  .nav-hamburger {
    display: flex;
  }
}

main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 2rem;
  background: #fff;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}

h1 {
  color: var(--primary-color);
  margin-top: 0;
}