body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #121b22; /* Main background color - customize here */
  color: #e3e7eb;
}

nav {
  background-color: #1f2a35; /* Navbar color */
  padding: 0.8em 0;
}

.nav-container {
  width: 95%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .logo {
  font-size: 1.7em;
  font-weight: bold;
  color: #63cdda;
  text-decoration: none;
}

nav ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

nav ul li {
  margin-left: 2em;
}

nav ul li a {
  color: #e3e7eb;
  text-decoration: none;
  padding: 0.5em 1.1em;
  border-radius: 5px;
  transition: background-color 0.3s;
}

nav ul li a:hover {
  background-color: #63cdda;
  color: #121b22;
}

main {
  max-width: 900px;
  margin: 2.5em auto;
  background-color: #1c2730;
  padding: 2.8em 3em;
  border-radius: 14px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.36);
}

article h1, article h2 {
  color: #63cdda;
  margin-top: 1.5em;
}

ul {
  margin-left: 1.2em;
  margin-bottom: 1.5em;
}

footer {
  background-color: #1f2a35;
  padding: 1.3em 0;
  color: #a8bfcf;
  text-align: center;
  margin-top: 3em;
}

.footer-container {
  width: 95%;
  margin: 0 auto;
}