/* CSS is how you can add style to your website, such as colors, fonts, and positioning of your
   HTML content. To learn how to do something, just try searching Google for questions like
   "how to change link color." */

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #111;
  background: #f4f4f4;
  line-height: 1.6;
}

.container {
  max-width: 460px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  background: #111;
  color: #f4f4f4;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo {
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.main-nav a {
  color: #f4f4f4;
  text-decoration: none;
  margin-left: 16px;
  font-size: 0.95rem;
}

.main-nav a:hover {
  text-decoration: underline;
}

.hero {
  background: #ffffff;
  padding: 64px 0;
  border-bottom: 1px solid #ddd;
}

.hero h2 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.hero p {
  max-width: 480px;
  margin-bottom: 16px;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  background: #111;
  color: #f4f4f4;
  text-decoration: none;
  font-size: 0.95rem;
}

.btn:hover {
  opacity: 0.9;
}

.section {
  padding: 56px 0;
  background: #f4f4f4;
}

.section:nth-of-type(even) {
  background: #ffffff;
}

.section h3 {
  margin-bottom: 24px;
  font-size: 1.3rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: #ffffff;
  border-radius: 12px;
  padding: 16px 18px;
  border: 1px solid #ddd;
}

.card h4 {
  margin-top: 0;
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.list {
  padding-left: 18px;
}

.site-footer {
  background: #111;
  color: #f4f4f4;
  padding: 16px 0;
  font-size: 0.85rem;
  margin-top: 32px;
}

.site-footer small {
  display: block;
  text-align: center;
}

/* Simple responsiveness */
@media (max-width: 640px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    margin-top: 8px;
  }

  .main-nav a {
    margin-left: 0;
    margin-right: 16px;
  }
}