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

body {
  font-family: "Segoe UI", Tahoma, sans-serif;
  background-color: #f5f7fa;
  color: #333;
  line-height: 1.6;
  padding-bottom: 4rem;
}

/* Cabeçalho */
header {
  background-color: #004aad;
  color: #fff;
  text-align: center;
  padding: 2rem 1rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1.2rem;
}

/* Conteúdo principal */
main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
}

h2 {
  color: #004aad;
  margin-top: 2rem;
  font-size: 1.6rem;
}

ul {
  margin-top: 0.5rem;
  padding-left: 1.5rem;
}

ul li {
  margin-bottom: 0.5rem;
}

/* Bloco de citação */
blockquote {
  margin: 1rem 0;
  padding: 1rem;
  background-color: #e6f0ff;
  border-left: 6px solid #004aad;
  font-style: italic;
}

/* Rodapé */
footer {
  background-color: #004aad;
  color: white;
  text-align: center;
  padding: 2rem 1rem;
  position: relative;
}

footer a {
  color: #fff;
  text-decoration: underline;
}

/* Botão interativo com JS */
.toggle-btn {
  background-color: #004aad;
  color: white;
  border: none;
  padding: 0.7rem 1.5rem;
  border-radius: 6px;
  font-size: 1rem;
  margin-top: 1rem;
  cursor: pointer;
  transition: background 0.3s;
}

.toggle-btn:hover {
  background-color: #00317c;
}

.hidden {
  display: none;
}