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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0d1117;
  touch-action: none;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  cursor: none;
}

#name-form {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.72);
  z-index: 10;
}
.nb {
  background: #161b22; border: 1px solid #30363d;
  padding: 28px 24px; width: 280px; border-radius: 6px; text-align: center;
}
#nf-title { color: #c9d1d9; font: 14px monospace; margin-bottom: 16px; }
#nf-input {
  width: 100%; background: #0d1117; border: 1px solid #388bfd;
  color: #fff; font: 16px monospace; padding: 10px 12px;
  border-radius: 4px; outline: none; box-sizing: border-box;
  text-transform: uppercase;
}
.nb-row { display: flex; gap: 10px; margin-top: 14px; }
#nf-submit {
  flex: 1; background: #238636; color: #fff; font: bold 14px monospace;
  border: none; padding: 12px; border-radius: 4px; cursor: pointer;
}
#nf-skip {
  flex: 1; background: rgba(255,255,255,0.1); color: #ccc;
  font: 14px monospace; border: none; padding: 12px;
  border-radius: 4px; cursor: pointer;
}