body {
  font-family: sans-serif;
  margin: 0;
  background-color: #f8f9fa;
  color: #222;
}

header {
  background-color: #007bff;
  color: white;
  padding: 2rem 1rem;
  text-align: center;
}

nav button {
  background-color: white;
  color: #007bff;
  border: none;
  padding: 0.5rem 1rem;
  margin: 0.3rem;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s;
}

nav button:hover {
  background-color: #e0e0e0;
}

main {
  max-width: 800px;
  margin: auto;
  padding: 1rem;
}

.content-section {
  background: white;
  margin: 1rem 0;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  display: none;
}

.related-posts h3 {
  margin-top: 1rem;
  font-size: 1rem;
  color: #007bff;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: #eee;
  font-size: 0.9rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

form input,
form textarea {
  padding: 0.6rem;
  border-radius: 5px;
  border: 1px solid #ccc;
  font-size: 1rem;
  font-family: inherit;
}

form button {
  background-color: #007bff;
  color: white;
  padding: 0.7rem;
  border: none;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
}

form button:hover {
  background-color: #0056b3;
}

.note {
  font-size: 0.9rem;
  color: #555;
  margin-top: 0.5rem;
}

@media (max-width: 600px) {
  nav button {
    display: block;
    width: 100%;
    margin: 0.5rem 0;
  }
}