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

html {
  font-size: 62.5%;
}

body {
  font-family: "Roboto", sans-serif;
  color: #333;
  line-height: 1;
  font-weight: 400;
  color: #555;
  font-size: 1.6rem;
}

.game-container {
  width: 100%;
  min-height: 100vh;
  background-color: #ffd9ae;
  position: relative;
  padding: 2rem;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 3rem;
}

/*************************************/
/* stats */
/*************************************/

.stats {
  font-size: 3rem;
  line-height: 1.5;

  display: flex;
  gap: 5rem;
}

/*************************************/
/* intro */
/*************************************/

.expl {
  max-width: max-content;

  border: 3px solid #333;
  padding: 3rem;
  text-align: center;
}

.msg-heading {
  font-weight: 600;
  font-size: 4rem;
  margin-bottom: 2rem;
}

.rules {
  font-size: 2.2rem;
  line-height: 1.4;
  margin-bottom: 5rem;
}

.choose-mode p {
  font-size: 4rem;
  margin-bottom: 5rem;
}

.mode {
  font-size: 3rem;
  color: #333;
  background-color: #ecb390;
  padding: 1rem 2rem;
  cursor: pointer;
}

.mode {
  background-color: #eebb9b;
}

/*************************************/
/* game */
/*************************************/

.game {
  width: 50rem;
  height: 50rem;

  display: flex;
  flex-wrap: wrap;

  background-color: #fff;
  border: 5px solid #333;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
}

.game-btn {
  width: 50%;
  height: 50%;
  flex-shrink: 1;
}

.green-color {
  background-color: #69db7c;
}
.red-color {
  background-color: #c51605;
}
.yellow-color {
  background-color: #ffd460;
}
.blue-color {
  background-color: #337ccf;
}

.v-border {
  position: absolute;
  width: 100%;
  height: 5px;
  top: 50%;
  transform: translateY(-50%);

  background-color: #333;
}
.h-border {
  position: absolute;
  height: 100%;
  width: 5px;
  left: 50%;
  transform: translateX(-50%);

  background-color: #333;
}

.btn {
  font-size: 3rem;
  padding: 1rem;
  background-color: #ecb390;
  cursor: pointer;
  border: 2px solid #333;

  user-select: none;
}

.btn:hover {
  background-color: #eebb9b;
}

.btn-next-level {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
}
/*************************************/
/* reusable */
/*************************************/

.hide {
  display: none;
}

.light-up {
  opacity: 0.5;
}

@media (max-width: 48em) {
  .expl,
  .msg-heading,
  .choose-mode {
    padding: 2rem;
  }

  .rules,
  .mode {
    font-size: 1.8rem;
  }

  .stats {
    font-size: 2rem;
  }
  .game {
    width: 30rem;
    height: 30rem;
  }
  .btn {
    font-size: 2rem;
    padding: 1rem;
  }
}
@media (max-width: 30em) {
  .stats {
    flex-direction: column-reverse;
    gap: 1rem;
  }
  .game {
    width: 30rem;
    height: 30rem;
  }
}