*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}
  
body{
  font-family:Roboto;
  background:#000;
  color:white;
}
  
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:24px;
  font-weight:bold;
}
  
.logo-img{
  width:70px;
  height:70px;
  object-fit:contain;
}
  
.menu{
  display:flex;
  list-style:none;
  gap:25px;
  margin-left:auto; 
  margin-top:10px;  
  }
  
.menu a{
  text-decoration:none;
  color:white;
  font-weight:bold;
  transition:.3s;
}
  
.menu a:hover{
  color:#aaa;
}
  
  
  
.hero{
  height:100vh;
  background-image: url("imagenes/fondodo.jpg");
  background-size:cover;
  background-position:center;
  background-attachment:fixed;
  
  position:relative;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  text-align:center;
}
    
    
  
.hero::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:rgba(0,0,0,0.6);
}
    
    
.hero-contenido{
  position:relative;
  z-index:2;
}
    
    
.navbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:5px 10%;
  background:black;
  position:sticky;
  top:0;
  z-index:1000;
}
    
    
.btn-scroll{
  display:inline-block;
  margin-top:30px;
  font-size:30px;
  text-decoration:none;
  color:white;
  animation:flotar 2s infinite;
}
    
    
@keyframes flotar{
  0%{transform:translateY(0);}
  50%{transform:translateY(10px);}
  100%{transform:translateY(0);}
}
    
.hero h1{
  font-size:60px;
}
    
.hero p{
  color:#aaa;
  font-size:22px;
  margin-top:10px;
}
    
.titulo-hero{
  font-size:60px;
  color:white;
  opacity:0;
  transform:translateY(-40px);
  animation:aparecer 1.5s ease forwards;
}
    
.subtitulo-hero{
  color:#a2a6b1;
  font-size:28px;
  opacity:0;
  animation:aparecer 2s ease forwards;
  animation-delay:0.5s;
}
    
@keyframes aparecer{
    
  from{
    opacity:0;
    transform:translateY(-40px);
  }
  
  to{
    opacity:1;
    transform:translateY(0);
  }
    
}
  
  /* GALERIA */
  
.galeria-section{
  text-align:center;
  padding:40px 5%;
}
  
.galeria{
  display:flex;
  overflow-x:auto;
  gap:15px;
  scroll-behavior:smooth;
}
  
.galeria img{
  height:300px;
  border-radius:10px;
  transition:.3s;
}
  
.galeria img:hover{
  transform:scale(1.05);
}
  
.contenedor-de-boton{
  position:relative;
}
  
.btn{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  font-size:30px;
  background:rgba(0,0,0,0.7);
  border:none;
  color:white;
  padding:10px;
  border-radius:50%;
  cursor:pointer;
}
  
.antes{left:0;}
.despues{right:0;}
  
  
  /* CARDS */
  
.card{
  max-width:900px;
  margin:60px auto;
  padding:40px;
  border-radius:15px;
  border:2px solid white;
  box-shadow:0 0 20px white;
  text-align:center;
}
  
  
 
  
.participantes{
  text-align:center;
  padding:60px 10%;
}
  
.grid-personas{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:40px;
  margin-top:40px;
}
  
.persona img{
  width:180px;
  height:180px;
  border-radius:50%;
  filter:grayscale(90%);
  transition:.3s;
}
  
.persona img:hover{
  filter:none;
  transform:scale(1.1);
}
  
  
  /* VIDEOS */
  
.video-contenedor{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:20px;
  margin-top:30px;
}
  
.video-contenedor iframe{
  width:100%;
  height:200px;
  border:none;
  border-radius:10px;
}
  
  
  /* MODELO */
  
.modelo{
  text-align:center;
  margin:60px auto;
  max-width:1000px;
  padding:20px;
  border:2px solid white;
  border-radius:15px;
  box-shadow:0 0 20px white;
}
  
.modelo img{
  width:100%;
  max-width:900px;
  border-radius:10px;
}
  
.mejoras-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:25px;
  margin-top:30px;
}
  
.mejora{
  background:#050505;
  border:2px solid white;
  border-radius:12px;
  padding:20px;
  transition:0.3s;
}
  
.mejora-centro{
  grid-column: 1 / -1;
  justify-self: center;
  max-width: 300px;
}
  
.mejora:hover{
  transform:translateY(-8px);
  box-shadow:0 0 20px white;
}
  
.footer{
  margin-top:80px;
  padding:30px;
  background:#050505;
  border-top:2px solid white;
  text-align:center;
}
  
.footer a{
  color:white;
  text-decoration:none;
}
  
.footer a:hover{
  color:#aaa;
}
  
.footer-contenido{
  max-width:800px;
  margin:auto;
}
  
  
  /* RESPONSIVE */
  
@media (max-width:768px){
  
  .hero h1{
  font-size:40px;
  }
  
  .menu{
  display:none;
  }
  
}