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

*:focus-visible {
  outline-color: #e8590c;
  outline-style: solid;
  outline-offset: 5px;
  outline-width: 3px;
}

html {
  font-size: 87.5%;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-family: "Play", sans-serif;
  background-color: #222;
  color: #eee;
}

.game-container {
  width: 60vw;
  display: flex;
  flex-direction: column;
}

.top-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 3rem;
}

.btn {
  cursor: pointer;
  border: none;
  background-color: #e8590c;
  color: #ffe8cc;
  padding: 1rem 1.5rem;
  border-radius: 7px;
  font-size: 1.6rem;
  transition: 0.3s all;
}

.btn:hover {
  background-color: #f76707;
  transform: translateY(-1px);
}

.btn:active {
  background-color: #e8590c;
  transform: translateY(0px);
}

.text {
  font-size: 2rem;
}

.text span {
  line-height: inherit;
}

h1 {
  font-size: 5rem;
  font-weight: 400;
  text-align: center;
  margin-bottom: 4rem;
}

.center-display {
  display: flex;
  align-items: center;
  margin-bottom: 4rem;
}

.display-text {
  text-align: center;
  width: 12rem;
  padding: 1rem;
  font-size: 6rem;
  border: 2px solid #eee;
  border-radius: 7px;
}

.center-display::before,
.center-display::after {
  content: "";
  display: inline;
  flex-grow: 1;
  height: 2px;
  background-color: #eee;
}

.io-box {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.input-box {
  width: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.input-box div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 15rem;
}

input {
  height: 5rem;
  width: 6rem;
  border-radius: 7px;
  font-family: "Play", sans-serif;
  font-size: 3rem;
  text-align: center;
}

input:focus {
  border: 3px solid #e8590c;
  outline-style: none;
}

.btn-plus-minus {
  border: none;
  border-radius: 7px;
  font-size: 2.5rem;
  width: 4rem;
  height: 4rem;
}

.confirm {
  width: 15rem;
  background-color: #2f9e44;
  color: #d3f9d8;
}

.confirm:hover {
  background-color: #37b24d;
}

.output-box {
  width: 50%;
  transform: translateX(15%);
}

.output-info {
  margin-bottom: 2rem;
}

.bottom-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  margin-top: 9rem;
}

.footer-text {
  font-size: 2rem;
}

.footer-link:link,
.footer-link:visited {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 2rem;
  text-decoration: none;
  color: #eee;
  transition: all 0.2s;
}

.footer-link:hover,
.footer-link:active {
  text-decoration: underline;
  transform: scale(1.05);
}

.footer-link img {
  height: 3rem;
  filter: invert(1);
  transform: translateY(1px);
}

.winner {
  background-color: #0d5c1d;
}

.loser {
  background-color: #860f0f;
}

/*********************/
/* HIDE INPUT ARROWS */
/*********************/
input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  appearance: none;
}

/*****************/
/* MEDIA QUERIES */
/*****************/

@media only screen and (max-width: 81.25em) {
  html {
    font-size: 81.25%;
  }

  .game-container {
    width: 65vw;
  }
}

@media only screen and (max-width: 62.5em) {
  html {
    font-size: 75%;
  }

  .game-container {
    width: 80vw;
  }
}

@media only screen and (max-width: 48em) {
  html {
    font-size: 62.5%;
  }

  .game-container {
    width: 90vw;
  }
}

@media only screen and (max-width: 34.5em) {
  html {
    font-size: 56.25%;
  }

  .io-box {
    flex-direction: column;
    gap: 6rem;
    align-items: center;
  }

  .output-box {
    width: 100%;
    transform: translateX(0);
    text-align: center;
  }
}

@media only screen and (max-width: 27.5em) {
  .bottom-container {
    flex-direction: column;
    gap: 1rem;
  }
}