body {
  background-color: black;
  color: gray;
  font-family: Verdana;
}





a{

  color: #6768B8;
  text-decoration: none;
  
}





a:hover{

  color: #7B7CDB;
  
  text-decoration: underline;
}






.social-icons {
  display: flex;        
  gap: 12px;             
  justify-content: center;
}

.social-icons .icon {
  text-decoration: none; 
  display: inline-block;
}

.social-icons .icon img {

  display: block;
}


.social-icons .icon {
  color: transparent; 
  font-size: 0;          
}














.banner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(to bottom, #111, #333);
  padding: 15px; padding-bottom: 0px;
  border-radius: 10px 10px 0px 0px;box-shadow: rgba(0, 0, 0, 0.17) 0px -23px 25px 0px inset, rgba(0, 0, 0, 0.15) 0px -36px 30px 0px inset, rgba(0, 0, 0, 0.1) 0px -79px 40px 0px inset, rgba(0, 0, 0, 0.06) 0px 2px 1px, rgba(0, 0, 0, 0.09) 0px 4px 2px, rgba(0, 0, 0, 0.09) 0px 8px 4px, rgba(0, 0, 0, 0.09) 0px 16px 8px, rgba(0, 0, 0, 0.09) 0px 32px 16px;
  
  
  z-index:10;
}

.banner .logo {
  height: 64px;
}

.botonera {
  display: flex;
  gap: 15px;
}

.btn {
  background: linear-gradient(to bottom, #444, #111);
  color: #fff;
  padding: 10px 20px;
  border-radius: 10px 10px 0px 0px;
  text-decoration: underline;
  text-decoration-color: gray;
  box-shadow: rgba(0, 0, 0, 0.25) 0px 54px 55px, rgba(0, 0, 0, 0.12) 0px -12px 30px, rgba(0, 0, 0, 0.12) 0px 4px 6px, rgba(0, 0, 0, 0.17) 0px 12px 13px, rgba(0, 0, 0, 0.09) 0px -3px 5px;
 
}

.btn:hover {
  background: linear-gradient(to bottom, white, gray);
  color: black;
  gap: 1px;
}

.container {
  background: linear-gradient(to bottom, #161616, #333);
  border: 2px solid gray;
  color: white;
  padding: 10px;
  position: relative; /* necesario para que el pseudo-elemento se ubique bien */
  font-size: 14px;
  border-radius: 0px 0px 10px 10px;
  border-top-color: #303030;
  border-left-color: #696969;
  border-right-color: #696969;

}


@media (max-width: 600px) {
  .banner {
    flex-direction: column;
    gap: 5px;
    padding: 10px;
  }

  .banner .logo {
    height: 48px; 
  }

  .botonera {
    flex-direction: column; 
    gap: 10px;
    
  }

  .btn {
    width: 80%; 
    text-align: center;
    padding: 12px;
    font-size: 16px;border-radius: 10px;
  }

  .container {
    font-size: 14px; 
    padding: 8px;
    
  }
}
.container::after {
  content: "TONICH ESTUDIOS © 2026";
  display: block;
  margin-top: 15px;
  padding: 8px;
  background: #222;background: linear-gradient(to right, #111, #333, #111);
  color: gray;
  text-align: center;
  font-weight: bold;
  font-size: 12px;
  border-top: 3px solid #303030;
  
box-shadow: 0 -4px 6px rgba(0,0,0,0.6);
  
  
  
  
  
}









small{
  
  
  
  color: gray;
  font-weight: bold;
}


details {
  border: 2px solid #161616;
  border-radius: 4px;
  padding: 0.5em 0.5em 0;
}

summary {
  font-weight: bold;
  margin: -0.5em -0.5em 0;
  padding: 20px;background: #222;background: linear-gradient(to bottom, #333, #111, #111);
  
  
  
  
  
  box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
  
  
}

details[open] {
  padding: 0.5em;
}

details[open] summary {
  border-bottom: 2px solid gray;
  margin-bottom: 0.5em;
}


.derecha {
  float: right;
}

summary:hover{
  cursor: pointer;
  padding: 20px;background: #222;background: linear-gradient(to bottom, #444, #222, #222);
}









details q {
  font-family: "Georgia", serif;   
  font-size: 15px;
  line-height: 1.6;              
  color: #ddd;                 
  margin: 0.5em 0;              
  padding: 0.5em 1em;            
  background: #111;                
  border-left: 3px solid gray;    
  border-radius: 4px;
}





details b {
        
  color: #D9F29B;     
  
text-shadow: 0 0 5px #2B3D00, 0 0 15px #2B3D00;
}



hr {
  border: none;           /* quita el estilo por defecto */
  border-top: 2px solid gray; /* línea gris */
}



::-webkit-scrollbar {
  width: 14px;         
}

::-webkit-scrollbar-track {
  background: #111;         
  border: 0px solid #333;    
  border-radius: 6px;
  box-shadow: inset 0 0 6px #000;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, #fff, #ccc, #999); 
  border: 0px solid #222;
  border-radius: 6px;
  box-shadow: inset 0 2px 4px #000; 
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(to bottom, #eee, #bbb, #888); 
}