body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #f1f1f1; /* was #f7f9fc */
  color: #333;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 2rem;
  background: white;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

/* Nav styles */
nav {
  background-color: #007bff;
  padding: 1rem;
  margin-bottom: 2rem;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

nav ul li {
  display: inline;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

nav ul li a:hover {
  text-decoration: underline;
  color: #dbeafe;
}

h1, h2, h3 {
  color: #007bff; /* updated from #005f73 */
}

.page-content {
  line-height: 1.7;
  font-size: 1.1rem;
}

.page-content img {
  max-width: 100%;
  height: auto;
  margin: 1rem 0;
}

.page-content a {
  color: #007bff; /* updated from #0a9396 */
  text-decoration: underline;
}

.page-content ul {
  margin-left: 2rem;
}

button, .btn {
  background-color: #007bff; /* blue */
  color: white;
  padding: 0.5rem 1rem;
  border: none;
  margin-top: 1rem;
  cursor: pointer;
  border-radius: 5px;
}

button:hover, .btn:hover {
  background-color: #0056b3; /* darker blue */
}

/* Tabs */
.nav-tabs .nav-link.active {
  background-color: #007bff;
  color: white;
  border-color: #dee2e6 #dee2e6 #fff;
}

.nav-tabs .nav-link {
  color: #007bff;
}

.tab-content {
  background-color: white;
  padding: 2rem;
  border: 1px solid #dee2e6;
  border-top: none;
  border-radius: 0 0 0.375rem 0.375rem;
}