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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
}

#scratchCanvas {
  display: block;
  cursor: none;
  border-radius: 8px;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.04),
    0 25px 80px rgba(0,0,0,0.5);
}

.cursor {
  position: fixed;
  pointer-events: none;
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: opacity 0.15s ease, transform 0.1s ease;
  z-index: 1000;
  opacity: 0;
}

.cursor.active {
  opacity: 1;
}

.cursor.scratching {
  transform: translate(-50%, -50%) scale(0.9);
  border-color: rgba(255,255,255,0.6);
}