html, body {
  margin: 0;
  padding: 0;
  background: #050505;
  color: #e8e8e8;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  overflow: hidden;
  height: 100%;
  user-select: none;
}
#gl {
  display: block;
  width: 100vw;
  height: 100vh;
  cursor: none;
}
#overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, #1a1a1a 0%, #050505 70%);
  text-align: center;
  z-index: 2;
  transition: opacity 0.4s ease;
}
#overlay.hidden { opacity: 0; pointer-events: none; }
.logo {
  letter-spacing: 0.45em;
  font-size: 12px;
  color: #888;
  margin-bottom: 12px;
}
.title {
  font-size: 72px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #fff;
  text-shadow: 0 0 24px rgba(255,120,40,0.35);
}
#status {
  margin-top: 28px;
  color: #f5a54a;
  max-width: 640px;
  line-height: 1.5;
}
.hint {
  margin-top: 18px;
  color: #777;
  font-size: 13px;
}
#levels {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 720px;
  justify-content: center;
}
#levels button {
  background: #111;
  color: #ddd;
  border: 1px solid #333;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 12px;
}
#levels button:hover {
  border-color: #f5a54a;
  color: #fff;
}
#hud {
  position: fixed;
  left: 12px;
  bottom: 10px;
  font-size: 12px;
  color: rgba(255,255,255,0.55);
  z-index: 3;
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}