/* On-screen touch controls — only on coarse-pointer devices and only after
   the splash dismisses (the game flips .tube.is-ready). Buttons are written
   per-game (left/right/jump/thrust/…) and styled with the base .tc-btn here;
   per-button colour overrides (.tc-thrust, .tc-jump, etc.) live in each
   game's own stylesheet. */

.touch-controls {
  position: absolute;
  inset: auto 0 0 0;
  display: none;
  justify-content: space-between;
  align-items: flex-end;
  padding: clamp(14px, 3vw, 28px);
  pointer-events: none;
  z-index: 6;
}
.tube.is-ready .touch-controls { display: flex; }
@media (hover: hover) and (pointer: fine) {
  .touch-controls { display: none !important; }
}
.touch-controls .tc-group {
  display: flex;
  gap: clamp(10px, 2vw, 16px);
  pointer-events: none;
}
.touch-controls .tc-btn {
  pointer-events: auto;
  width: clamp(56px, 11vw, 80px);
  height: clamp(56px, 11vw, 80px);
  border-radius: 12px;
  border: 2px solid rgba(45, 212, 255, 0.6);
  background: rgba(0, 0, 0, 0.35);
  color: #2dd4ff;
  font-family: 'Press Start 2P', ui-monospace, monospace;
  font-size: clamp(20px, 4vw, 30px);
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  transition: background 0.08s, border-color 0.08s;
}
.touch-controls .tc-btn:active,
.touch-controls .tc-btn.is-pressed {
  background: rgba(45, 212, 255, 0.25);
  border-color: #2dd4ff;
  color: #fff;
}

/* Show keyboard hints by default; swap to touch labels on coarse pointers.
   display:revert lets each element fall back to its natural display value
   (div → block, span → inline) so the utility works in both contexts. */
.touch-only { display: none; }
@media (pointer: coarse) {
  .key-only { display: none; }
  .touch-only { display: revert; }
}