/* Menú principal - versión desktop */
    nav  {
  display: flex;
  justify-content: center;
  background-color: #3498db;
  padding: 9px 0;
  box-shadow: 0 2px 5px rgba(240, 13, 13, 0.1);
  text-align: center;
}
    
    nav a {
  color: #b3d6fb;
  text-decoration: none;
  padding: 4px;
  margin: 0 4px;
  border-radius: 4px;
  transition: all 0.3s ease;
  font-size: 0.9em;
}
    
nav a:hover, nav a.active {
  background-color: #d5def9;
  transform: translateY(-2px);
  box-shadow: 2px 2px 2px rgb(11, 69, 242);
}
    
 /*  menu desplegable (responsive) */   
 .menu-toggle {
  display: none;
  cursor: pointer;
  padding: 5px;
}

.menu-mobile  {
  display: none;
  flex-direction: column;
  background: #c4c0c0;
  width: 100%;
  padding: 7px;
}

.menu-mobile.active {
  display: flex;
}

.menu-mobile a {
  padding: 7px;
  text-decoration: none;
  color: #0052ee;
  border-bottom: 1px solid #ddd;
}
.menu-mobile a:hover, .menu-mobile a.active {
      background-color: #c1e5fd;
 }
/* Estilos para pantallas pequeñas */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  #mainNav {
    display: none;
  }
  
  .menu-mobile {
    display: none;
  }
}

/* Estilos para pantallas grandes */
@media (min-width: 769px) {
  .menu-toggle {
    display: none;
  }
  
  .menu-mobile {
    display: none !important;
  }
  
  #mainNav {
    display: flex;
    gap: 15px;
    background: #f1f1f1;
    padding: 10px;
  }
  
  #mainNav a {
    text-decoration: none;
    color: #333;
  }
  
  #mainNav a.active {
    font-weight: bold;
    color: #ff3838;
  }
}   
    
 /*  fin movile */      
      
    section {
      margin-bottom: 2em;
      background-color: #ffffff;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }
    
    .file-section {
      display: none;
      max-width: 1200px;
      margin: 10px auto;
      border-radius: 8px;
    }
    
    .file-section.active {
      display: block;
      animation: fadeIn 0.5s ease;
    }
    
    ul, ol {
      background-color: #f8f9fa;
      border-left: 4px solid #3498db;
      padding: 15px 20px 15px 40px;
      margin: 15px 0;
      border-radius: 0 6px 6px 0;
    }
    
    ul li, ol li {
      margin-bottom: 2px;
      padding-left: 5px;
    }
    
    .boton-inicio {
      display: inline-block;
      text-align: center;
      text-decoration: none;
      margin: 20px;
      background-color: #3498db;
      color: white;
      float: right;
      border: none;
      padding: 8px 16px;
      border-radius: 50px;
      font-size: 1em;
      transition: all 0.3s ease;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    .boton-inicio:hover {
      background-color: #2980b9;
      transform: translateY(-2px);
      box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    }
    
    .clean {
      clear: both;
    }
    
     
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }
    
        @media (max-width: 768px) {
            
        }