body {
  font-family: -apple-system, BlinkMacMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: #f0f2f5;
  color: #1c1e21;
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  text-align: center;
  overflow: hidden;
}

/* Navigation Bar Styles */
.main-nav {
  background-color: #333;
  padding: 10px 0;
  width: 100%;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  z-index: 30; /* Ensure nav is above other elements */
}

.main-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
}

.main-nav li {
  margin: 0 15px;
}

.main-nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 5px 10px;
  transition: background-color 0.3s ease;
}

.main-nav a:hover {
  background-color: #555;
  border-radius: 5px;
}

/* Content wrapper for other pages (now also for index.html) */
.content-wrapper {
  margin: auto;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  max-width: 900px;
  padding: 20px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
  text-align: center;
  box-sizing: border-box;
}

.content-wrapper h1 {
  color: #333;
  margin-bottom: 20px;
}

.content-wrapper p {
  color: #555;
  line-height: 1.6;
}