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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0d0021;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

#gameCanvas {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
}

/* ── Mobile Touch Controls ────────────────────────────────────────────────── */
#touchControls {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 160px;
  pointer-events: none;
  z-index: 10;
}

@media (pointer: coarse) {
  #touchControls {
    display: block;
  }
}

.touch-btn {
  position: absolute;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 2px solid rgba(0, 245, 255, 0.5);
  background: rgba(0, 245, 255, 0.08);
  color: rgba(0, 245, 255, 0.7);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: all;
  touch-action: none;
  backdrop-filter: blur(4px);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.3);
  transition: background 0.1s, box-shadow 0.1s;
}

.touch-btn:active {
  background: rgba(0, 245, 255, 0.25);
  box-shadow: 0 0 24px rgba(0, 245, 255, 0.7);
}

#touchLeft {
  left: 20px;
  bottom: 50px;
}

#touchThrust {
  left: 110px;
  bottom: 80px;
  border-color: rgba(255, 45, 120, 0.5);
  color: rgba(255, 45, 120, 0.8);
  background: rgba(255, 45, 120, 0.08);
  box-shadow: 0 0 12px rgba(255, 45, 120, 0.3);
}

#touchThrust:active {
  background: rgba(255, 45, 120, 0.25);
  box-shadow: 0 0 24px rgba(255, 45, 120, 0.7);
}

#touchRight {
  left: 200px;
  bottom: 50px;
}

#touchFire {
  right: 30px;
  bottom: 60px;
  width: 80px;
  height: 80px;
  font-size: 28px;
  border-color: rgba(180, 0, 255, 0.6);
  color: rgba(180, 0, 255, 0.8);
  background: rgba(180, 0, 255, 0.1);
  box-shadow: 0 0 16px rgba(180, 0, 255, 0.4);
}

#touchFire:active {
  background: rgba(180, 0, 255, 0.3);
  box-shadow: 0 0 32px rgba(180, 0, 255, 0.8);
}