:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0a0d10;
  color: #f7f9fa;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at top, rgb(39 53 62 / 70%), transparent 42rem),
    #0a0d10;
}

button {
  font: inherit;
}

.game-shell {
  width: min(100%, 36rem);
  min-height: 100svh;
  margin: 0 auto;
  padding: max(0.75rem, env(safe-area-inset-top)) 0.75rem max(1rem, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.65rem;
}

.game-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.eyebrow,
.game-over-label {
  margin: 0 0 0.15rem;
  color: #58e88b;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.25rem, 5vw, 1.8rem);
  line-height: 1;
}

.scoreboard {
  display: flex;
  gap: 0.45rem;
}

.scoreboard p {
  min-width: 4.3rem;
  margin: 0;
  padding: 0.35rem 0.55rem;
  border: 1px solid #41505a;
  border-radius: 0.5rem;
  background: rgb(8 12 15 / 75%);
  color: #b8c2c8;
  font-size: 0.72rem;
  text-align: center;
  text-transform: uppercase;
}

.scoreboard strong {
  display: block;
  color: #fff;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.game-stage {
  position: relative;
  width: min(100%, calc((100svh - 12rem) * 2 / 3));
  min-width: 15rem;
  margin: 0 auto;
  overflow: hidden;
  border: 2px solid #70808a;
  border-radius: 0.75rem;
  box-shadow: 0 1rem 3rem rgb(0 0 0 / 45%);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  background: #25292c;
  touch-action: none;
}

.game-over {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  padding: 2rem;
  background: rgb(4 7 9 / 78%);
  text-align: center;
  backdrop-filter: blur(3px);
}

.game-over[hidden] {
  display: none;
}

.game-over h2 {
  margin: 0;
  font-size: clamp(2rem, 10vw, 3.5rem);
}

.game-over p:not(.game-over-label) {
  margin: 0.5rem 0 1.25rem;
}

#restartButton {
  border: 0;
  border-radius: 0.55rem;
  padding: 0.8rem 1.2rem;
  background: #58e88b;
  color: #06150b;
  font-weight: 900;
  cursor: pointer;
}

#restartButton:focus-visible,
.touch-controls button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
}

.touch-controls {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

.touch-controls button {
  width: min(42vw, 10rem);
  min-height: 3.25rem;
  border: 1px solid #60717b;
  border-radius: 0.65rem;
  background: #1c252a;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.touch-controls button:active,
.touch-controls button.is-pressed {
  background: #58e88b;
  color: #06150b;
}

.help-text {
  margin: 0;
  color: #a9b4ba;
  font-size: 0.78rem;
  text-align: center;
}

kbd {
  border: 1px solid #61717a;
  border-radius: 0.25rem;
  padding: 0.05rem 0.3rem;
  background: #20292e;
  color: #fff;
  font-family: inherit;
}

@media (hover: hover) and (pointer: fine) {
  .touch-controls {
    display: none;
  }
}

@media (max-height: 650px) and (orientation: landscape) {
  .game-shell {
    width: min(100%, 52rem);
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto 1fr auto;
  }

  .game-header,
  .help-text {
    grid-column: 1;
  }

  .game-stage {
    grid-column: 2;
    grid-row: 1 / 4;
    width: calc((100svh - 1.5rem) * 2 / 3);
  }
}