@import url('https://fonts.googleapis.com/css?family=Press+Start+2P&display=swap');

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

html {
  font-size: 62.5%;
  box-sizing: border-box;
}

body {
  font-family: 'Press Start 2P', sans-serif;
  color: #eee;
  background-color: #222;
  transition: background-color 300ms ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100vh;
}

/* LAYOUT */
.top-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem;
}

main {
  color: #eee;
  display: flex;
  flex: 1 1 0;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-around;
  gap: 4rem;
  padding: 2.5rem 2rem;
}

.left {
  flex: 1 1 0;
}
.left form {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.right {
  flex: 1 1 0;
  font-size: 2rem;
  text-align: center;
}

/* ELEMENTS STYLE */
h1 {
  font-size: 4rem;
  text-align: center;
  width: 100%;
  margin-block: 2.5rem;
}

.number-container {
  margin-block: 3rem;
  display: flex;
  align-items: center;
}
.number {
  background: #eee;
  color: #333;
  font-size: 6rem;
  width: 15rem;
  padding: 3rem 0rem;
  text-align: center;
  border-radius: 0.25rem;
}
.number-container::after,
.number-container::before {
  content: '';
  flex: 1 1 0;
  display: inline-block;
  height: 7px;
  background-color: #eee;
}

.between {
  font-size: 1.4rem;
}

.guess {
  background: none;
  border: 4px solid #eee;
  font-family: inherit;
  color: inherit;
  font-size: 5rem;
  padding: 2.5rem;
  width: 25rem;
  text-align: center;
  display: block;
  margin-bottom: 3rem;
}

.btn {
  border: none;
  background-color: #eee;
  color: #222;
  font-size: 2rem;
  font-family: inherit;
  padding: 2rem 3rem;
  cursor: pointer;
  border-radius: 0.5rem;
}

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

.message {
  margin-bottom: 8rem;
  height: 3rem;
}

.label-score {
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .right {
    text-align: center;
  }
  .top-section {
    flex-direction: column;
  }
  h1 {
    font-size: 2.5rem;
    line-height: 3.5rem;
  }
  .number {
    padding: 2.5rem 0;
    font-size: 4.5rem;
    width: 12rem;
  }
  .guess {
    font-size: 4rem;
    width: 22rem;
  }
}