html,
body.fps-body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #02060a;
}

.fps-body #engineCanvas {
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
}

.fps-hud {
  position: fixed;
  left: 14px;
  top: 14px;
  z-index: 2;
  width: min(310px, calc(100vw - 28px));
  padding: 16px;
  border: 1px solid rgba(210, 236, 255, 0.22);
  border-radius: 18px;
  color: #eef8ff;
  background: rgba(3, 10, 18, 0.72);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px);
}

.fps-hud > span {
  color: #9fd7ff;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.fps-hud strong {
  display: block;
  margin: 4px 0 12px;
  font-size: clamp(2.4rem, 10vw, 4.8rem);
  line-height: 0.9;
  letter-spacing: -0.07em;
}

.fps-hud dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
}

.fps-hud div {
  padding: 8px;
  border: 1px solid rgba(210, 236, 255, 0.13);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.055);
}

.fps-hud dt {
  color: #9fb8c9;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
}

.fps-hud dd {
  margin: 3px 0 0;
  font-weight: 900;
}

.fps-hud p {
  margin: 12px 0 0;
  color: #bdd7e9;
  font-size: 0.85rem;
  line-height: 1.45;
}