body {
  font-family: -apple-system, "Hiragino Sans", sans-serif;
  background: #1a1a2e;
  color: #eee;
  margin: 0;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  margin: 0 0 8px 0;
  font-size: 22px;
  letter-spacing: 0.1em;
}

#game {
  background: #6cbcf7;
  border: 2px solid #555;
  display: block;
  cursor: crosshair;
  image-rendering: pixelated;
}

#hud {
  width: 960px;
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 13px;
}

#stats {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 6px 12px;
  background: #222;
  border-radius: 6px;
  border-left: 4px solid #ff8b8b;
  font-variant-numeric: tabular-nums;
}
.coin  { color: #ffd86b; }
.heart { color: #ff7a8a; }

.bar {
  display: inline-block;
  width: 120px;
  height: 8px;
  background: #444;
  border-radius: 4px;
  overflow: hidden;
}
.fill {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #ff8b8b, #e74c3c);
  transition: width 100ms linear;
}

#hotbar {
  width: 960px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin-top: 8px;
}

.slot {
  position: relative;
  background: #2b2b46;
  border: 2px solid #555;
  border-radius: 6px;
  padding: 6px 4px;
  text-align: center;
  user-select: none;
  font-size: 11px;
  cursor: pointer;
}
.slot.active { border-color: #ffd86b; background: #3a3a5a; }
.slot .swatch { display: inline-block; width: 28px; height: 28px; border-radius: 3px; vertical-align: middle; border: 1px solid #111; }
.slot .name   { display: block; margin-top: 4px; color: #eee; }
.slot .hotkey { position: absolute; top: 2px; left: 4px; font-size: 9px; color: #999; }
.slot .count  { position: absolute; top: 2px; right: 4px; font-size: 10px; color: #ffd86b; font-weight: bold; }

#controls {
  margin-top: 10px;
  font-size: 13px;
  color: #aaa;
  text-align: center;
  line-height: 1.6;
}

#message {
  margin-top: 12px;
  font-size: 22px;
  font-weight: bold;
  height: 28px;
  color: #ffd86b;
}