:root {
  --bg: #e3dfd7;
}

* { box-sizing: border-box; }

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
}

body {
  font-family: 'Inter Tight', 'Noto Sans JP', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: none;
}

#stage {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

/* 1280 x 800 artboard, scaled to fit the window by main.js. */
#board {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1280px;
  height: 800px;
  transform-origin: 0 0;
}

.sticker {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: 50% 50%;
  pointer-events: none;
  visibility: hidden;
}

.sticker.is-out { visibility: visible; }

.sticker.is-flying { will-change: transform; }

/* Laid out at full size before the burst so its GPU layer is rasterised sharp. */
.sticker.is-pending { opacity: 0; }

/* Reduced motion: stickers fade in place instead of flying. */
.sticker.is-fading { animation: sticker-fade 0.5s ease both; }

@keyframes sticker-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.fallback {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  padding: 24px;
  text-align: center;
  font: 500 15px/1.5 system-ui, sans-serif;
  color: #11110f;
}

html[data-failed] .fallback { display: grid; }


.sticker.is-lifted {
  filter: drop-shadow(3px 10px 9px rgba(40, 30, 20, 0.22));
}

.sticker .face {
  position: absolute;
  inset: 0;
  transform-origin: 0 0;
}

.sticker .face > svg,
.sticker .face > canvas {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

.sticker svg text {
  font-family: 'Inter Tight', 'Noto Sans JP', system-ui, sans-serif;
}

.pack {
  position: absolute;
  left: 0;
  top: 0;
  width: 268px;
  height: 409px;
  transform-origin: 50% 50%;
  pointer-events: none;
  z-index: 100;
  will-change: transform;
  outline: none;
}

.pack:focus-visible .pack-inner {
  outline: 3px solid #11110f;
  outline-offset: 8px;
  border-radius: 6px;
}

.pack-hint {
  position: absolute;
  left: 50%;
  top: 100%;
  margin-top: 26px;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: rgba(17, 17, 15, 0.68);
  opacity: 0;
  transition: opacity 0.45s ease;
}

.pack-hint.is-on { opacity: 1; }

.pack-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  /* Squash and stretch from the bottom edge, like it sits on the table. */
  transform-origin: 50% 100%;
}

.pack-side {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.pack-back { transform: rotateY(180deg); }

.pack-strip {
  position: absolute;
  left: 0;
  top: 0;
  width: 268px;
  height: 30px;
  overflow: visible;
  transform-origin: 266px 22px;
  visibility: hidden;
}

#fx {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 6000;
}