body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
  color: #333;
}

header {
  background-color: #004080;
  color: white;
  padding: 1rem;
  text-align: center;
}

header .container {
  max-width: 900px;
  margin: auto;
}

.logo {
  height: 50px;
  vertical-align: middle;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

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

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

main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

section {
  margin-bottom: 3rem;
}

h2 {
  color: #004080;
}

.indicadores p {
  background: #e0e7ff;
  padding: 1rem;
  border-left: 5px solid #004080;
  margin: 0.5rem 0;
}

form input,
form textarea {
  width: 100%;
  max-width: 600px;
  margin: 0.5rem 0;
  padding: 0.5rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

form button {
  background-color: #004080;
  color: white;
  border: none;
  padding: 0.7rem 1.5rem;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 0.5rem;
}

form button:hover {
  background-color: #003366;
}

footer {
  background-color: #004080;
  color: white;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
}

#mensaje, #estado-envio {
  margin-top: 0.5rem;
  font-weight: bold;
}

@media (max-width: 600px) {
  nav ul {
    flex-direction: column;
    align-items: center;
  }
}