/*efecto titulo*/
.shine-text span {
  display: inline-block;
  opacity: 0.4;
  transition: opacity 0.3s ease-in-out;
  animation: shine 4s infinite alternate;
}

@keyframes shine {
  0% { opacity: 0.4; }
  50% { opacity: 1; }
  100% { opacity: 0.4; }
}

/* Delay progresivo para efecto secuencial de izquierda a derecha y vuelta */
.shine-text span:nth-child(1)  { animation-delay: 0s; }
.shine-text span:nth-child(2)  { animation-delay: 0.1s; }
.shine-text span:nth-child(3)  { animation-delay: 0.2s; }
.shine-text span:nth-child(4)  { animation-delay: 0.3s; }
.shine-text span:nth-child(5)  { animation-delay: 0.4s; }
.shine-text span:nth-child(6)  { animation-delay: 0.5s; }
.shine-text span:nth-child(7)  { animation-delay: 0.6s; }
.shine-text span:nth-child(8)  { animation-delay: 0.7s; }
.shine-text span:nth-child(9)  { animation-delay: 0.8s; }
.shine-text span:nth-child(10) { animation-delay: 0.9s; }
.shine-text span:nth-child(11) { animation-delay: 1s; }
.shine-text span:nth-child(12) { animation-delay: 1.1s; }
.shine-text span:nth-child(13) { animation-delay: 1.2s; }
/*efecto titulo fin*/

/*bootstrap activo*/
html,body {
  height: 100vh;
  margin: 0;
  padding: 0;
}

body.fondo-responsive {
  background-image: url('../../images/fondo01.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
/*end boostrap*/

.correo-bg {  
  background: linear-gradient(
    to bottom,
    #152663 5%,       /* azul oscuro */    
    #FAFAFA 1%,      /* línea blanca de 1% */
    #FFCE00 8%,      /* amarillo */
    #FAFAFA 50%
  );
}

.card-custom {  
  border-radius: 0.75rem;    /* bordes redondeados */
  box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.05); /* sombra suave */
  padding: 2rem;             /* espacio interno */
}