body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: linear-gradient(135deg, #f9f9f9 0%, #e9f0fa 100%);
}

.menu-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: auto;
  margin-top: 24px;
  padding: 18px 32px 18px 32px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.menu-buttons-vertical {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 16px;
  margin-top: 18px;
}

.menu-button {
  font-size: 20px;
  padding: 14px 0;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  color: white;
  width: 375px;
  margin: 0 auto;
  box-sizing: border-box;
  transition: background 0.2s;
}

.menu-button:hover {
  transform: scale(1.03);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.menu-button.level-mmcube-speed {
  background-color: #d2691e;
  color: white;
}

.menu-button.level-mmcube-speed:hover {
  background-color: #a14d0a;
  color: white;
}

.menu-button.level-mmcube-junior {
  background-color: #28a745;
  color: white;
}

.menu-button.level-mmcube-junior:hover {
  background-color: #1e7e34;
  color: white;
}

.menu-button.level-mmcube-tween {
  background-color: #8e24aa;
  color: white;
}

.menu-button.level-mmcube-tween:hover {
  background-color: #5e188c;
  color: white;
}

.menu-button.level-mmcube-challenge {
  background-color: #ffc107;
  color: #222;
}

.menu-button.level-mmcube-challenge:hover {
  background-color: #e0a800;
  color: #222;
}

.menu-button.level-mmcube-practice {
  background-color: #007bff;
  color: #fff;
}

.menu-button.level-mmcube-practice:hover {
  background-color: #0056b3;
  color: #fff;
}

.menu-button.level-spelling {
  background: #17a2b8; /* Teal */
  color: #fff;
}

.menu-button.level-spelling:hover {
  background: #117a8b; /* Darker teal */
  color: #fff;
}

.menu-button.inactive {
  cursor: not-allowed;
  filter: grayscale(30%);
}

.menu-button.inactive:hover {
  filter: brightness(0.95);
}

footer {
  margin-top: 24px;
  color: #888;
  font-size: 14px;
}

@media (max-width: 400px) {
  .menu-button {
    width: 98vw;
    font-size: 1em;
  }

  .menu-container {
    padding: 0 2vw;
  }
}