/* ── Reset ─────────────────────────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
  touch-action: none;
}

/* ── 전체 레이아웃 래퍼 ──────────────────────────────────────────────────── */
#wrapper {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
}

/* ── 게임 캔버스 영역 ─────────────────────────────────────────────────────── */
#gameArea {
  flex: 1;
  min-height: 0;          /* flex 축소 허용 */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#gameCanvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* ── 터치 컨트롤 바 (기본: 숨김 / 터치 기기에서만 표시) ──────────────────── */
#touchControls {
  display: none;
  flex-shrink: 0;
  height: 170px;
  background: #080808;
  border-top: 1px solid #1a1a1a;
}

/* 터치 포인터 기기에서만 컨트롤 표시 */
@media (pointer: coarse) {
  #touchControls {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
}

/* ── 왼쪽: 조이스틱 영역 ──────────────────────────────────────────────────── */
#leftControl {
  position: relative;
  width: 50%;
  height: 100%;
  overflow: hidden;
  touch-action: none;
}

#joystickBase {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.15);
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  position: absolute;
  opacity: 0;
  pointer-events: none;
  /* transform: translate(-50%, -50%) 은 JS에서 처리 */
  transition: opacity 0.08s;
}

#joystickBase.active {
  opacity: 1;
}

#joystickKnob {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 38%,
    rgba(255,255,255,0.55),
    rgba(255,255,255,0.18));
  border: 2px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 0 10px rgba(255,255,255,0.1);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  will-change: transform;
}

/* ── 오른쪽: 액션 버튼 영역 ──────────────────────────────────────────────── */
#rightControl {
  width: 50%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  touch-action: none;
}

.gameBtn {
  border: none;
  border-radius: 50%;
  font-family: monospace;
  font-weight: bold;
  color: #fff;
  cursor: pointer;
  touch-action: none;
  letter-spacing: 0.04em;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.06s, opacity 0.06s;
}

.gameBtn:active {
  transform: scale(0.90) !important;
  opacity: 0.85;
}

/* FIRE 버튼 */
.fire-btn {
  width: 88px;
  height: 88px;
  font-size: 14px;
  background: radial-gradient(circle at 38% 38%, #ff5555, #880000);
  border: 2px solid rgba(255, 100, 100, 0.45);
  box-shadow: 0 0 12px rgba(255, 40, 40, 0.25);
}

.fire-btn.pressed {
  background: radial-gradient(circle at 38% 38%, #ff8888, #cc2222);
}

/* LOOP 버튼 */
.loop-btn {
  width: 66px;
  height: 66px;
  font-size: 11px;
  background: radial-gradient(circle at 38% 38%, #5599ff, #001880);
  border: 2px solid rgba(100, 160, 255, 0.45);
  box-shadow: 0 0 10px rgba(40, 100, 255, 0.20);
}

/* ── 일시정지 버튼 (게임 캔버스 위 고정, 터치 기기 전용) ────────────────── */
#btnPause {
  display: none;
  position: fixed;
  top: 8px;
  right: 8px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.55);
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  font-family: monospace;
  cursor: pointer;
  z-index: 200;
  touch-action: none;
  align-items: center;
  justify-content: center;
  letter-spacing: 2px;
}

@media (pointer: coarse) {
  #btnPause {
    display: flex;
  }
}

/* ── 가로 모드 레이아웃 ──────────────────────────────────────────────────── */
@media (orientation: landscape) and (pointer: coarse) {
  #wrapper {
    flex-direction: row;
  }

  #touchControls {
    width: 190px;
    height: 100%;
    flex-direction: column;
    justify-content: space-around;
    border-top: none;
    border-left: 1px solid #1a1a1a;
    padding: 16px 0;
  }

  #leftControl {
    width: 100%;
    height: 50%;
  }

  #rightControl {
    width: 100%;
    height: 50%;
    flex-direction: row;
    gap: 12px;
  }
}

/* ── 아주 작은 화면 (h < 500px 가로 모드 등) ─────────────────────────────── */
@media (max-height: 420px) and (pointer: coarse) {
  #touchControls {
    height: 130px;
  }

  .fire-btn {
    width: 72px;
    height: 72px;
    font-size: 12px;
  }

  .loop-btn {
    width: 54px;
    height: 54px;
    font-size: 10px;
  }

  #joystickBase {
    width: 90px;
    height: 90px;
  }

  #joystickKnob {
    width: 40px;
    height: 40px;
  }
}