html,
body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 100%;
}

body {
  background: #222;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: Arial, sans-serif;
}

#gameCanvas {
  background: #000;
  display: block;
  width: 100vh;
  height: 100vh;
}

.menu {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100vh; /* same as canvas */
  height: 100vh; /* same as canvas */
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  z-index: 2;
}

.menu-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover; /* fill canvas */
  top: 0;
  left: 0;
  z-index: -1;
}

.menu-buttons {
  position: absolute;
  bottom: 120px;
  left: 120px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.menu-btn {
  width: 200px; /* adjust button size */
  cursor: pointer;
  transition: transform 0.2s;
}

.menu-btn:hover {
  transform: scale(1.05);
}

.menu-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none; /* Hidden until paused */
  justify-content: center;
  align-items: center;
  flex-direction: column;
  z-index: 3;
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none; /* hidden until paused */
  background: rgba(0, 0, 0, 0.4); /* darkened backdrop */
  z-index: 4;
  justify-content: center;
  align-items: center; /* this centers the pause window */
}

.overlay-window {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.overlay-bg {
  width: 400px; /* size of the pause window PNG */
  border-radius: 12px;
}

.overlay-buttons {
  position: absolute;
  bottom: 15%; /* place buttons inside PNG */
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: center;
  width: 100%;
}

#gameOverMenu {
  display: none;
}

.gameover-btn {
  position: absolute;
  bottom: -30px;
  left: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}