:root {
  color-scheme: dark;
  font-family: "Segoe UI", sans-serif;
  background: #0b0f1a;
  color: #f5f5f5;
}

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

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

.game-shell {
  max-width: 760px;
  width: 100%;
  background: #141c2e;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

header h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
  color: #ffdd57;
}

header p {
  line-height: 1.5;
  color: #d6e0ff;
}

.hud {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  background: #1d2945;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  justify-content: space-between;
}

.hud-item {
  font-weight: 600;
  color: #c9f5ff;
}

.canvas-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  background: #0c1324;
  border-radius: 16px;
  border: 2px solid #334166;
  touch-action: none;
}

footer {
  text-align: center;
  color: #9db0d3;
  font-size: 0.95rem;
}

@media (max-width: 600px) {
  body {
    padding: 1rem;
  }

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