/* Base resets */
html, body {
  height: 100%;              /* makes flexbox stretch full viewport */
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #0D2F5D;            /* dark blue text */
  background-color: #F5F7FA; /* light off-white background */
  display: flex;
  flex-direction: column;    /* stack header, main, footer */
}
main {
  flex: 1;               /* take up remaining space */
}

a {
  color: #1769AA; /* medium blue */
  text-decoration: none;
}

a:hover {
  color: #0D2F5D;
}

/* Header / Nav */
header {
  background-color: #0D2F5D; /* dark blue */
  color: white;
  padding: 1rem 2rem;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  margin: 0;
  font-size: 1.5rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: white;
  font-weight: bold;
}

/* Hero section */

.hero-inner {
  max-width: 600px;
  margin: 0 auto;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  background-color: #1769AA; /* medium blue button */
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-top: 1rem;
}

.btn:hover {
  background-color: #0D2F5D;
}

/* Content sections */
.content {
  padding: 3rem 2rem;
  text-align: center;
}

.content.alt {
  background-color: white;
}

.content h2 {
  color: #0D2F5D;
}

/* Footer */
footer {
  text-align: center;
  padding: 1rem;
  background-color: #0D2F5D;
  color: white;
}

/* Force sections to take up screen height */
section {
  padding: 3rem 2rem;
}

.hero {
  min-height: 70vh; /* Full screen */
  background-color: #E8F2FC;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  padding: 3rem 2rem;
  background-color: white;
  text-align: center;
}

.feature h3 {
  color: #1769AA;
}

.cta {
  background-color: #2A9D8F; /* green accent */
  color: white;
  text-align: center;
  padding: 4rem 2rem;
}

.cta h2 {
  margin-bottom: 1rem;
}