:root {
  color-scheme: dark;
  --bg: radial-gradient(circle at top, #1b1f3a, #050608 50%);
  --panel: rgba(9, 11, 25, 0.85);
  --accent: #e4ff2b;
  --text: #f4f4f4;
  --secondary: #8ea7ff;
  font-family: "Press Start 2P", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem 4rem;
}

main {
  width: min(920px, 100%);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

header {
  background: var(--panel);
  padding: 1.5rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.35);
}

h1 {
  margin: 0.4rem 0;
  font-size: clamp(1.25rem, 3vw, 1.8rem);
  color: var(--accent);
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 0.6rem;
  color: var(--secondary);
}

.lead {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.4;
}

.game-shell {
  background: var(--panel);
  padding: 1.25rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

canvas {
  width: 100%;
  height: auto;
  border-radius: 14px;
  background: #04040b;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.6);
}

.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.75rem;
  gap: 0.5rem;
}

.hud span {
  color: var(--accent);
}

button {
  font: inherit;
  cursor: pointer;
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 0.6rem 1.25rem;
  border-radius: 999px;
  transition: background 120ms ease, transform 120ms ease;
}

button:hover,
button:focus-visible {
  background: rgba(228, 255, 43, 0.12);
  color: var(--accent);
}

button:active {
  transform: translateY(1px);
}

.controls {
  display: grid;
  place-items: center;
  gap: 0.5rem;
}

.controls .row {
  display: flex;
  gap: 0.5rem;
}

footer {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(244, 244, 244, 0.6);
}

@media (min-width: 720px) {
  main {
    flex-direction: column;
    align-items: center;
  }

  .game-shell {
    padding: 2rem;
  }

  .controls button {
    padding: 0.75rem 1.5rem;
  }
}