* {
    font-family: "Poppins", sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


header {
    height: 120px;
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    background-color: rgba(0, 0, 0, 0.5);
    transition: background 0.3s ease;
    z-index: 1000;
}



.logo img {
  width: 120px;
  max-width: 100%;
}

nav {
    display: flex;
    align-items: center;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 35px;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
  text-shadow: 0px 4px 4px #282828;
  transition: color 0.3s;
}

.menu-toggle {
    display: none;
    font-size: 28px;
    color: #fff;
    cursor: pointer;
}
.nav-links a i {
    margin-right: 8px;
}


.boton-nav-sesion :hover{
    background-color: #fff;
    color: black;
}

/* header color ------------------*/

.menu {
    list-style: none;
    display: flex;
    gap: 20px;
}

.menu-link {
    text-decoration: none;
    color: black;
    font-weight: normal;
    transition: color 0.3s, font-weight 0.3s;
}

.menu-link:hover {
    color: rgb(162, 255, 0);
}

.menu-link.activo {
    color:  #ffef42;
    font-weight: bold;
    border-bottom: 2px solid yellow;
}
/* acerca de ------------------------------*/

.acercade{
    background-color: #fff;
    text-align: center;
    padding-bottom: 100px;
}
.acer{
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto; /* O margin: auto */
}

.acercade h1{
    padding-top: 180px;
}
.acercade h5{
    color: #808080;
    font-style: oblique;
}

.acercade p{
    color: #808080;
}

/*  video institucional ---------------------*/
.video-ins{
  background-image: url(../imagenes/beneficios.png);
  padding-bottom: 100px;
  padding-top: 100px;
}
.videoyoutube{

    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

/* mision vision ---------------------*/


.mv{
   margin:100px 0;
     display: flex;
     justify-content: center;
     align-items: center;
     flex-direction: column;
}

    .img-container {
    position: relative;
    display: inline-block;
    touch-action: none; /* ayuda en móviles para la interacción con la lupa */
  }

  .image {
    display: block;
    width: 100%;
    max-width: 1200px; /* cambia según necesites */
    height: auto;
    user-select: none;
    -webkit-user-drag: none;
  }

  /* Lupa (lens) */
  .lupa {
    position: absolute;
    width: 140px;     /* diámetro de la lupa (ajustar aquí) */
    height: 140px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid rgba(255,255,255,0.9);
    box-shadow: 0 6px 20px rgba(0,0,0,0.35);
    background: rgba(255,255,255,0.05);
    display: none;    /* se muestra al interactuar */
    z-index: 20;
    pointer-events: none; /* muy importante: permite que los eventos (mousemove/touch) lleguen a la imagen */
    backdrop-filter: blur(2px);
  }

  /* Imagen ampliada dentro de la lupa (posicionada por JS) */
  .lupa img {
    position: absolute;
    top: 0;
    left: 0;
    height: auto;
    /* No fijamos width aquí — lo ajusta JS para que el zoom sea exacto */
    -webkit-user-drag: none;
    user-select: none;
    pointer-events: none;
  }

  /* texto instructivo (opcional) */
  .nota {
    text-align: center;
    margin-top: 18px;
    font-size: 14px;
    color: #666;
  }





  
/* modelo academico ---------------------*/
.modelo{
  background-image: url(../imagenes/bannergris.jpg);
  background-repeat: no-repeat;
  background-size: cover;
}

 .contenedor-grid {
      max-width: 1200px;
      margin: 0px auto;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      padding: 80px;
    }

    .card {
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      padding: 20px;
      text-align: center;
      transition: transform 0.3s;
    }

    .card:hover {
      transform: translateY(-5px);
    }

    .card img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      margin-bottom: 15px;
    }

    
   

/* footer -------------------------*/


footer {
    background-image: url(../imagenes/Prueba-imagen-FORMULARIO.png);
    color: rgb(255, 255, 255);
    padding: 40px 20px 20px;
    font-family: Arial, sans-serif;
}

.footer-columns {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: auto;
}

.footer-column {
    flex: 1 1 250px;
    margin: 10px;
}

.footer-column h3 {
    margin-bottom: 15px;
    font-size: 18px;
    border-bottom: 1px solid #fff;
    display: inline-block;
}

.footer-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
}

.footer-item i {
    font-size: 20px;
}

.footer-bottom {
    border-top: 1px solid #555;
    margin-top: 30px;
    padding-top: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 30px auto 0;
}

.footer-bottom p {
    margin: 0;
    font-size: 14px;
    color: black;
}

.footer-bottom a{
    color: rgb(192, 192, 192);
    text-decoration: none;
}

.footer-bottom a:hover{
    color: #f0f0f0;

}

.social-buttons a {
    color: rgb(255, 255, 255);
    text-decoration: none;
    margin-left: 10px;
    font-size: 18px;
    transition: color 0.3s;
}

.social-buttons a:hover {
    color: #b2e73f;
}


/* nuestras alianzas ----------------------*/

 
    .alianzas-section {

        background:
  radial-gradient(ellipse at top, #5742ed, transparent),
  radial-gradient(ellipse at bottom, #0091f0, transparent);
      padding: 40px 0;
      overflow: hidden;
    }

    .alianzas-section h2 {
      text-align: center;
      color: #ffffff;
      font-size: 28px;
      margin-bottom: 30px;
      letter-spacing: 1px;
    }

    .alianzas-carrusel-wrapper {
      overflow: hidden;
      width: 100%;
      display: flex;
      justify-content: center;
    }

    .alianzas-carrusel {
      display: flex;
      animation: scroll 25s linear infinite;
      width: max-content;
    }

    .alianza {
      flex: 0 0 auto;
      margin: 0 40px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .alianza img {
      height: 80px;
      width: auto;
      filter: brightness(0) invert(1); /* blanco si fondo es oscuro */
      opacity: 0.9;
      transition: transform 0.3s;
    }

    .alianza img:hover {
      transform: scale(1.1);
      opacity: 1;
    }

    @keyframes scroll {
      0% { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }
/* boton hacia arriba --------------*/

#btn-scroll-top {

  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 20px;
  height: 20px;
  background: transparent;
  border: 1px solid #333;
  border-radius: 4px;
  color: #ffffff;
  font-size: 14px;
  cursor: pointer;
  display: none; /* Oculto por defecto */
  z-index: 1000;
  transition: background 0.3s, transform 0.3s;
  line-height: 20px;
  text-align: center;
  padding: 0;
}

#btn-scroll-top:hover {
  background: rgba(0, 0, 0, 0.1);
  transform: scale(1.1);
}


    

/* Responsivo */
@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 60px;
        right: 20px;
        background: #2b2e83;
        flex-direction: column;
        width: 150px;
        display: none;
        border-radius: 8px;
        padding: 10px;
        
    }

    .nav-links.show {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

         .seccion-mv {
        flex-direction: column;
      }

      .separador-vertical {
        display: none;
      }

      .columna {
        width: 100%;
        padding: 20px;
      }

     .alianza img {
        height: 60px;
      }

}

 @media (max-width: 992px) {
      .contenedor-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 600px) {
      .contenedor-grid {
        grid-template-columns: 1fr;
      }
    }


/* celular --------------------------------------------------------------------------*/
@media screen and (max-width: 430px) {

  /* acerca de ------------------------------*/


.acer{
    max-width: 300px;
    
}

.acercade p{
    font-size: 14px;
}

/* mision vision ---------------------*/


  
   /* Lupa (lens) */
  .lupa {
  
    width: 40px;     /* diámetro de la lupa (ajustar aquí) */
    height: 40px;
  }




}