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

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  background: #87CEEB;
}

#gameCanvas {
  display: block;
  width: 100%; height: 100%;
  touch-action: none;
}

/* ---- Overlay ---- */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0,0,0,0.5);
  z-index: 10;
}
.overlay.hidden { display: none; }

.ov-panel {
  background: rgba(255,255,255,0.95);
  border-radius: 20px;
  padding: 30px 32px;
  text-align: center;
  max-width: 320px;
  width: 90%;
  font-family: 'Hiragino Kaku Gothic ProN','Hiragino Sans','Noto Sans JP',sans-serif;
}
.ov-panel.hidden { display: none; }

.ov-emoji { font-size: 3rem; margin-bottom: 8px; }

.ov-title {
  font-size: 1.7rem;
  font-weight: 900;
  color: #333;
  margin-bottom: 6px;
}

.ov-sub {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 14px;
}

.ov-controls {
  font-size: 0.82rem;
  color: #555;
  background: #f0f4ff;
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 18px;
  line-height: 1.7;
  text-align: left;
}

.ov-btn {
  display: inline-block;
  background: linear-gradient(135deg, #4f8ef7, #6c63ff);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  padding: 12px 30px;
  border-radius: 50px;
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
}

.x-share-btn {
  display: block;
  background: #000;
  margin-bottom: 10px;
}

.ov-btn-retry {
  background: linear-gradient(135deg, #888, #555);
}

/* ---- Touch guides ---- */
.touch-guide {
  position: fixed;
  bottom: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(255,255,255,0.8);
  background: rgba(0,0,0,0.25);
  border-radius: 10px;
  padding: 6px 12px;
  pointer-events: none;
  display: none;
  font-family: sans-serif;
}
.tg-left  { left: 12px; }
.tg-right { right: 12px; }
.touch-guide.visible { display: block; }