*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root{
  font-size: 62.5%;

  --color-text-nav: hsla(240, 7%, 78%, 1);
  --color-text-nav-clicked : hsla(0, 0%, 100%, 1);
  --color-text-section-title: hsla(240, 9%, 89%, 1);
  --color-text-button-hover: hsl(194, 97%, 31%);
  --color-background-button-hover: hsl(0, 0%, 100%);
}

body{
  font-size: 1.6rem;

  font-family: 'Roboto', sans-serif;
}

.bold{
  font-weight: 700;
  font-size: 2.4rem;
  color: var(--color-text-nav-clicked);
}

.i{
  margin: 0;
  width: 100vw;
  height: 100vh;

  position: absolute;
  inset: 0;
  z-index: -1;

}

.d{
  display: none;
}


#app{
  margin: 4rem 7.2rem;
}

li{
  list-style: none;
}

a{
  text-align: center;
  text-decoration: none;

  font-size: 2.2rem;
  line-height: 2.2rem;
  font-weight: 400;

  color: var(--color-text-nav);
}

li img {
  width: 4.2rem;
  height: 5.0rem;
}

nav{
  margin: 4rem auto 7.2rem 4rem;
}

ul{
  display: flex;
  gap: 3.2rem;
  flex-direction: row;
  text-align: center;
  
  align-items: center;
}

#home{
  padding: 17.2rem 44.0rem;

  text-align: center;

  display: flex;
  flex-direction: column;
  gap: 2.3rem;
  align-items: center;
}

#home h1{
  width: 39.9rem;
  height: 6rem;

  font-family: 'Roboto', sans-serif;
  font-weight: 700;
  font-size: 4.8rem;
  line-height: 6rem;
  color: var(--color-text-section-title);

}

#home button{
  color: var(--color-text-nav-clicked);
  background-color: transparent;

  padding: 1.2rem 3.2rem;

  justify-content: center;

  align-items: center;
  gap: .8rem;

  border-radius: 5px;
  border: 2px solid #FFF;

  text-transform: uppercase;
  text-align: center;
  font-family: inherit;
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 2.4rem;

}

#home button:hover{
  color: var(--color-text-button-hover);
  background-color: var(--color-background-button-hover)
}

#universo , #exploracao{
  margin: 6rem 10.2rem  auto auto;
  padding-left: 9.2rem;
}

h1{
  color: var(--color-text-section-title);

  font-family: inherit;
  font-size: 4.8rem;
  font-weight: 700;
  line-height: 6rem;
  
}

p{
  margin-top: 1.6rem;

  width: 64.8rem;
  height: 20.3rem;

  color: var(--color-text-section-title);

  font-family: inherit;
  font-size: 1.8rem ;
  font-weight: 400;
  line-height: 2.88rem;

}

#exploracao p{
  height: 17.4rem;
}


#error{
  background-color: hsl(303, 100%, 50%);

  padding: 6rem;

  text-align: center;

  color: var(--color-text-nav-clicked);

  border-radius: 6rem;
}