:root {
  color-scheme: dark;
  --ui: #f8f8f8;
  --ui-shadow: #103a6b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: #0b1020;
  overflow: hidden;
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

#stage {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
}

#screen {
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
  display: block;
}

#hud {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  display: grid;
  grid-template-columns: auto auto;
  gap: 2px 10px;
  color: var(--ui);
  font-weight: 700;
  font-size: clamp(14px, 2.4vw, 20px);
  letter-spacing: 0.06em;
  text-shadow: 2px 2px 0 var(--ui-shadow);
  pointer-events: none;
}

#hud .label { color: #ffd23f; }

#touch {
  position: absolute;
  inset: auto 0 0 0;
  padding: 0 max(14px, env(safe-area-inset-left)) max(18px, env(safe-area-inset-bottom));
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
}

#touch .cluster {
  display: flex;
  gap: 0.6rem;
}

#touch .pad {
  width: 4.5rem;
  height: 4.5rem;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: var(--ui);
  font-size: 1.4rem;
  backdrop-filter: blur(2px);
}

#touch .pad.jump {
  width: 5.5rem;
  height: 5.5rem;
  background: rgba(255, 96, 96, 0.28);
}

#touch .pad:active { background: rgba(255, 255, 255, 0.32); }

#debug-toggle {
  position: absolute;
  top: max(10px, env(safe-area-inset-top));
  right: max(10px, env(safe-area-inset-right));
  width: 2.4rem;
  height: 2.4rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.3);
  color: var(--ui);
  font: 700 0.9rem/1 "Trebuchet MS", system-ui, sans-serif;
}

#debug-toggle[aria-pressed="true"] {
  background: rgba(80, 220, 255, 0.35);
  border-color: rgba(180, 240, 255, 0.7);
}