/* Fuente moderna */
body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  background: #f4f6f9;
  color: #333;
  line-height: 1.6;
}

header {
  background-color: #1f4e68;
  color: white;
  padding: 1em 2em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.logo {
  height: 50px;
}

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

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

nav a:hover {
  color: #a6d1f2;
}

section {
  padding: 3em 2em;
  max-width: 1000px;
  margin: auto;
}

section:nth-child(even) {
  background: #eaf1f6;
}

h1, h2 {
  color: #1f4e68;
  margin-bottom: 1em;
}

ul {
  padding-left: 1.5em;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1em;
  background: white;
  padding: 2em;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

input,
textarea {
  padding: 0.75em;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 1em;
  transition: border-color 0.3s;
}

input:focus,
textarea:focus {
  border-color: #1f4e68;
  outline: none;
}

button {
  background-color: #1f4e68;
  color: white;
  border: none;
  padding: 0.75em;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #16394d;
}

footer {
  background: #1f4e68;
  color: white;
  text-align: center;
  padding: 1em;
  margin-top: 3em;
}

a {
  color: #1f4e68;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}