body {
  margin: 0;
  padding: 0;
  background-image: url("../assets/background.svg");
  background-size: cover;
  background-repeat:no-repeat;
  width: 100%;
  height: 100vh; 
}

/* ------------------- HEADER ------------------- */
header {
  height: 50px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  color: #ffffff;
  background-color: #092cd1;
}

h1 {
  margin: 0 0 0 10px;
}

h2 {
  margin: 1.5rem auto 2rem auto;
  text-align: center;
  color: #ffffff;
  font-size: 2rem;
  font-weight: bold;
}

.btn-about {
  background-color: indigo;
  border: 1px solid indigo;
  box-shadow: #ffffff 0px 0px 5px;
  border-radius: 5px;
  color: #ffffff;
  width: 90px;
  padding: 6px;
  margin: 0 10px 0 0;
  font-size: 0.8rem;
  font-weight: 900;
  cursor: pointer;
  /* Elimina resplandor cuando recibe el focus */
  outline: none;
}

/* ------------------- BOARD ------------------- */
.board {
  background-color: greenyellow;
  width: 70vh;
  height: 70vh;
  margin: 0 auto;
  border-radius: 50%;
  display: flex;
  flex-wrap: wrap;
  /* Todo lo que se desborde lo oculta */
  overflow: hidden;
  position: relative;
  /* cursor: pointer; */
}

.position {
  width: 50%;
  height: 50%;
}

.yellow {
  background-color: yellow;
}

.blue {
  background-color: blue;
}

.red {
  background-color: red;
}

.green {
  background-color: green;
}

.yellow.soft{
  background-color: rgba(236, 236, 45, 0.561);
}

.blue.soft{
  background-color: rgba(69, 69, 236, 0.589);
}

.red.soft{
  background-color: rgba(231, 90, 90, 0.63);
}

.green.soft{
  background-color: rgba(95, 230, 95, 0.637);
}

.btn-start {
  width: 50vh;
  height: 80px;
  position: absolute;
  top: calc(50% - 40px);
  left: calc(50% - 25vh);
  font-size: 2rem;
  border-radius: 10px;
  background-color: indigo;
  color: #ffffff;
  box-shadow: #ffffff 1px 1px 10px;
  cursor: pointer;
}

.hide {
  display: none;
}

.increase {
  transform: scale(1.05);
}

/* ------------------- MEDIA QUERY ------------------- */
@media screen and (max-width: 460px) {
  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  .btn-about {
    font-size: 0.7rem;
  }

  .board {
    width: 55vh;
    height: 55vh;
  }

  .position {
    width: 50%;
    height: 50%;
  }

  .btn-start {
    width: 40vh;
    height: 60px;
    position: absolute;
    top: calc(50% - 30px);
    left: calc(50% - 20vh);
    font-size: 1.5rem;       
  }
}

@media screen and (max-width: 380px) {
  .board {
    width: 50vh;
    height: 50vh;
  }

  .position {
    width: 50%;
    height: 50%;
  }

  .btn-start {
    width: 34vh;
    height: 54px;
    position: absolute;
    top: calc(50% - 27px);
    left: calc(50% - 17vh);
    font-size: 1.2rem;       
  }
}

@media screen and (max-width: 330px) {
  .btn-about {
    font-size: 0.7rem;
  }
    
  .board {
    width: 45vh;
    height: 45vh;
  }

  .position {
    width: 50%;
    height: 50%;
  }

  .btn-start {
    width: 28vh;
    height: 38px;
    position: absolute;
    top: calc(50% - 19px);
    left: calc(50% - 14vh);
    font-size: 0.8rem;       
  }
}