body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    background-color: #f4f4f4;
    color: #1c1c1c;
  }
  
  header {
    background-color: #ff3c00; /* Rojo graffiti: energía y rebeldía */
    color: white;
    text-align: center;
    padding: 1rem 0;
  }
  
  nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
  }
  
  nav ul li a {
    text-decoration: none;
    color: #1c1c1c;
    font-weight: bold;
    transition: color 0.3s ease;
  }
  
  nav ul li a:hover {
    color: #ffd700; /* Amarillo vibrante: visibilidad urbana */
    text-decoration: underline;
  }
  
  main {
    max-width: 900px;
    margin: 2rem auto;
    background-color: white;
    padding: 1rem 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }
  
  article, section {
    margin: 1rem 0;
    padding: 1rem;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.3s ease;
  }
  
  article {
    background-color: #e9f5ff;
    border-left: 5px solid #ff3c00;
  }
  
  article:hover {
    transform: scale(1.01);
  }
  
  .seccion-alto-nivel {
    background-color: #f0e4ff;
    border-left: 5px solid #6c757d;
  }
  
  .seccion-frameworks {
    background-color: #f6e6e8;
    border-left: 5px solid #dc3545;
  }
  
  /* === Aside y Citas === */
  aside {
    background-color: #e9ecef;
    padding: 1rem;
    border-left: 5px solid #6c757d;
    margin: 1rem 0;
  }
  
  blockquote {
    font-style: italic;
    color: #666;
  }
  
  /* === Imagen y Pie de Imagen === */
  .imagen-contenedor {
    text-align: center;
    margin: 2rem 0;
  }
  
  .imagen-contenedor img {
    width: 80%; /* Imagen más grande */
    max-width: 800px;
    height: auto;
    border: 3px solid #ccc;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: transform 0.3s ease-in-out;
  }
  
  .imagen-contenedor img:hover {
    transform: scale(1.03);
  }
  
  .pie-imagen {
    font-size: 0.9em;
    color: #666;
    margin-top: 0.5rem;
  }
  

  button {
    background-color: #ff3c00;
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 5px;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.3);
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  button:hover {
    background-color: #e63300;
  }
  
  /* === Footer === */
  footer {
    background-color: #343a40;
    color: white;
    text-align: center;
    padding: 1rem 0;
    position: relative;
    width: 100%;
    bottom: 0;
  }
  
  @media (max-width: 600px) {
    nav ul {
      flex-direction: column;
      align-items: center;
    }
  
    .imagen-contenedor img {
      width: 90%;
    }
  
    main {
      padding: 1rem;
    }
  }