body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  font-size: 18px; /* 👈 añade esto o 17 o quitar */
  background-color: #f8f9fa;
  color: #333;
}

header {
  background-color: #002b5c;
  color: white;
  padding: 2rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 2.5rem;
}

header p {
  margin-top: 0.5rem;
  font-size: 1.2rem;
}

nav {
  background-color: #004080;
  padding: 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

nav a {
  color: white;
  margin: 0.3rem 0.8rem;
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

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

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

.logo {
  display: block;
  margin: 2rem auto;
  max-width: 300px;
}

ul {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.8rem;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: #eaeaea;
  color: #555;
}

.thumbnail {
  width: 150px;         /* Tamaño fijo o ajustable */
  height: auto;         /* Mantiene la proporción */
  border: 1px solid #ccc;
  padding: 4px;
  border-radius: 4px;
  box-shadow: 2px 2px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease;
}

.thumbnail:hover {
  transform: scale(1.05); /* Efecto al pasar el cursor */
  cursor: pointer;
}

.avatar {
  border-radius: 50%;
  width: 60px;
  height: 60px;
}

.responsive {
  max-width: 100%;
  height: auto;
}

.demo-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  margin-top: 2rem;    /* Espacio por FUERA (arriba del nav) */
  padding: 0.5rem 0;   /* Espacio por DENTRO (arriba y abajo de los botones) */
}

.prev-button, .next-button {
  padding: 0.6em 1.2em;
  background-color: #0056b3;
  color: white;
  text-decoration: none;
  border-radius: 6px;
}

.version-button {
  padding: 0.3em 0.8em;
  font-size: 0.85rem; 
  background-color: #0056b3;
  color: white;
  text-decoration: none;
  border-radius: 6px;
}

.prev-button:hover, .next-button:hover {
  background-color: #003d80;
}