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

/* Body */
body {
  font-family: 'Roboto', sans-serif;
  background: linear-gradient(to bottom, #e3f2fd, #e1bee7);
  color: #212121;
  line-height: 1.7;
  margin: 20px;
}

/* Cabecera */
header {
  background: linear-gradient(90deg, #673ab7, #3f51b5);
  color: white;
  text-align: center;
  padding: 30px 15px;
  border-radius: 12px;
}

header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 2.5em;
  margin-bottom: 8px;
}

header p {
  font-size: 1.1em;
}

/* Menú */
nav {
  background-color: #9575cd;
  margin: 20px 0;
  border-radius: 10px;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

nav ul li {
  margin: 10px;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 8px 12px;
  border-radius: 8px;
  transition: background-color 0.3s, transform 0.2s;
}

nav ul li a:hover {
  background-color: #512da8;
  transform: scale(1.05);
}

/* Secciones */
main {
  background-color: rgba(255, 255, 255, 0.95);
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0,0,0,0.1);
}

.contenido {
  margin-bottom: 30px;
}

.contenido h2 {
  font-family: 'Playfair Display', serif;
  color: #512da8;
  margin-bottom: 12px;
  font-size: 1.7em;
}

.contenido p, .contenido ul {
  font-size: 1.1em;
  text-align: justify;
  margin-bottom: 10px;
}

/* Listas */
.contenido ul {
  margin-left: 20px;
}

.contenido ul li {
  margin-bottom: 5px;
}

/* Código */
.codigo {
  font-family: 'Fira Code', monospace;
  background-color: #e8eaf6;
  color: #1a237e;
  padding: 10px;
  border-radius: 8px;
  display: block;
  overflow-x: auto;
  margin: 10px 0;
}

/* Imágenes */
.contenido img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin-top: 15px;
  box-shadow: 0 5px 12px rgba(0,0,0,0.2);
}

/* Pie */
footer {
  background-color: #673ab7;
  color: white;
  text-align: center;
  padding: 12px;
  border-radius: 10px;
  font-size: 0.95em;
}