body {
  margin: 0;
  padding: 0;
  font-family: 'Courier New', monospace;
  background: url('images/bg.jpg') no-repeat center center fixed;
  background-size: cover;
  color: white;
}

.background-overlay {
  position: fixed;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: -1;
}

.profile-area {
  position: fixed;
  left: 30px;
  top: 40px;
  text-align: center;
  border: 4px solid #8b0000;
  padding: 15px;
  background: rgba(0, 0, 0, 0.7);
}

.profile-img {
  width: 180px;
  border-radius: 5px;
  margin-bottom: 10px;
}

.window {
  position: absolute;
  top: 120px;
  left: 400px;
  width: 400px;
  border: 2px solid red;
  background-color: black;
  box-shadow: 0 0 15px purple;
}

.window-header {
  background-color: #111;
  padding: 8px;
  font-weight: bold;
  display: flex;
  justify-content: space-between;
}

.window-body {
  padding: 20px;
}

.deco {
  width: 100%;
  margin: 10px 0;
}

#play-bgm {
  position: fixed;
  bottom: 30px;
  right: 30px;
  font-size: 20px;
}

.corner {
  position: fixed;
  width: 50px;
  height: 50px;
  pointer-events: none;
  z-index: 999;
}

.top-left {
  top: 0;
  left: 0;
}

.top-right {
  top: 0;
  right: 0;
  transform: scaleX(-1);
}

.bottom-left {
  bottom: 0;
  left: 0;
  transform: scaleY(-1);
}

.bottom-right {
  bottom: 0;
  right: 0;
  transform: scale(-1, -1);
}