* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft JhengHei", sans-serif;
  background: #101522;
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px;
  gap: 12px;
}

.hud {
  width: 960px;
  max-width: 96vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #1d273d;
  border: 2px solid #3a4c73;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 600;
}

canvas {
  max-width: 96vw;
  height: auto;
  background: #7fc9ff;
  border: 3px solid #1f2c43;
  border-radius: 8px;
  image-rendering: pixelated;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: grid;
  place-content: center;
  text-align: center;
  gap: 8px;
}

.overlay h1 {
  margin: 0;
  font-size: 44px;
  text-shadow: 2px 2px 0 #000;
}

.overlay p {
  margin: 0;
  font-size: 20px;
}

.hidden {
  display: none;
}