:root {
  --bg: #ffffff;
  --text: #0f172a;
  --accent: #4f46e5;
  --card-bg: rgba(0,0,0,0.03);
  --card-border: rgba(0,0,0,0.09);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden;
  background: var(--bg); color: var(--text);
  font-family: 'Pretendard', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
}

#wall-viewport {
  width: 100vw; height: 100vh;
  overflow: hidden;
  position: relative;
}

#wall-canvas {
  position: absolute; top: 0; left: 0;
  transform-origin: top left;
}

.wall-icon {
  position: absolute;
  width: 220px; height: 220px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  cursor: pointer;
  touch-action: none;
  user-select: none;
  transform: translate(-50%, -50%);
}
.wall-icon img { width: 96px; height: 96px; pointer-events: none; }
.wall-icon span { margin-top: 12px; font-size: 22px; font-weight: 600; pointer-events: none; }

.wall-stage-zone {
  position: absolute; top: 0;
  width: 3840px; height: 2160px;
  background: #000;
  display: none;
  z-index: 100; /* #wall-icons가 DOM상 뒤에 오므로, z-index 없이는 아이콘이 스테이지 위로 그려짐 */
}
.wall-stage-zone.open { display: block; }

.wall-stage-close {
  position: absolute; top: 32px; right: 32px; z-index: 10;
  width: 64px; height: 64px; border-radius: 50%;
  background: rgba(255,255,255,0.15); color: #fff;
  border: none; font-size: 28px; cursor: pointer;
}

.wall-zone-guide {
  position: absolute; top: 0; bottom: 0; width: 2px;
  background: rgba(255,0,0,0.4);
  pointer-events: none;
}