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

body, html {
  height: 100%;
  display: flex;
  flex-direction: column;
  font-family: Arial, sans-serif;
}

header {
  background: #0B1A3D;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header .logo {
  color: #fff;
  font-size: 20px;
  font-weight: bold;
  text-decoration: none;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav ul li a {
  text-decoration: none;
  color: #fff;
  font-weight: 500;
  transition: color 0.3s ease;
}

nav ul li a:hover {
  color: #4FA3F7;
}

main {
  flex: 1;
  padding: 40px;
}

footer {
  background: #0B1A3D;
  color: #fff;
  text-align: center;
  padding: 20px;
  margin-top: auto;
}

footer .mission {
  font-style: italic;
  color: #4FA3F7;
  margin-bottom: 10px;
}

footer .social {
  margin-top: 10px;
}

footer .social a {
  margin: 0 10px;
  display: inline-block;
}

footer .social img {
  width: 24px;
  height: 24px;
}