html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #87ceeb;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #fff;
  user-select: none;
}

#view {
  display: block;
  width: 100vw;
  height: 100vh;
  cursor: crosshair;
}

#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  box-sizing: border-box;
}

#crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  background:
    linear-gradient(#fff, #fff) center / 2px 100% no-repeat,
    linear-gradient(#fff, #fff) center / 100% 2px no-repeat;
  mix-blend-mode: difference;
  opacity: 0.85;
}

#hotbar {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: rgba(0, 0, 0, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
}

.hotbar-slot {
  width: 48px;
  height: 48px;
  background: rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #fff;
  position: relative;
}

.hotbar-slot.active {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.15);
}

#hint {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.5);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 13px;
  letter-spacing: 0.02em;
  transition: opacity 0.3s;
}

#stats {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(0, 0, 0, 0.5);
  padding: 6px 10px;
  border-radius: 4px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  line-height: 1.4;
}