@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Nunito:wght@700;800;900&display=swap');

:root {
  --dark-green: #26734d;
  --green: #38a169;
  --light-green: #dff0b0;
  --page-background: #f4f7ee;
  --text: #18251f;
  --gray: #718078;
  --red: #ee6654;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 30px 18px;
  background: var(--page-background);
  color: var(--text);
  font-family: 'Nunito', sans-serif;
}

.game-shell {
  width: min(100%, 470px);
  margin: 0 auto;
}

.game-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 3px;
  color: var(--green);
  font: 500 11px 'DM Mono', monospace;
  letter-spacing: 2px;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 11vw, 58px);
  line-height: .9;
  letter-spacing: -2px;
}

.score-board {
  display: flex;
  gap: 22px;
  text-align: right;
}

.score-board div {
  display: grid;
  gap: 1px;
}

.score-board span {
  color: var(--gray);
  font: 500 10px 'DM Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.score-board strong {
  font-size: 25px;
  line-height: 1;
}

.game-card {
  padding: 16px;
  border: 1px solid rgba(38, 115, 77, .08);
  border-radius: 24px;
  background: white;
  box-shadow: 0 20px 50px rgba(30, 63, 43, .13);
}

.canvas-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  background: var(--light-green);
}

canvas {
  display: block;
  width: 100%;
  height: auto;
}

.game-message {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  padding: 20px;
  background: rgba(226, 241, 183, .9);
  text-align: center;
  transition: opacity .2s ease, visibility .2s ease;
}

.game-message.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.message-icon {
  margin-bottom: 5px;
  font-size: 34px;
}

.game-message h2 {
  margin: 0;
  font-size: 24px;
}

.game-message p {
  margin: 5px 0 16px;
  color: #52705e;
  font-size: 14px;
}

button {
  border: 0;
  font: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

#start-button {
  padding: 11px 22px;
  border-radius: 10px;
  background: var(--green);
  color: white;
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 4px 0 var(--dark-green);
}

#start-button:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--dark-green);
}

.controls {
  display: grid;
  grid-template: repeat(2, 45px) / repeat(3, 45px);
  gap: 6px;
  justify-content: center;
  margin: 17px auto 14px;
}

.direction {
  border-radius: 10px;
  background: #edf5da;
  color: var(--dark-green);
  font-size: 16px;
  transition: background .15s, transform .1s;
}

.direction:hover,
.direction:active {
  background: #c9e878;
  transform: scale(.94);
}

.up {
  grid-column: 2;
}

.left {
  grid-column: 1;
  grid-row: 2;
}

.down {
  grid-column: 2;
  grid-row: 2;
}

.right {
  grid-column: 3;
  grid-row: 2;
}

.tip {
  margin: 0;
  color: var(--gray);
  text-align: center;
  font: 12px 'DM Mono', monospace;
}

.tip span {
  color: var(--red);
  font-weight: 500;
}

@media (max-width: 430px) {
  body {
    padding: 20px 12px;
  }

  .game-card {
    padding: 11px;
    border-radius: 19px;
  }

  .game-header {
    padding: 0 4px;
  }
}