.menu-bottom {
  position: fixed;
  bottom: 0;
  left: 50%;
  width: 90%;
  height: 40px;
  transform: translateX(-50%);
  background: rgba(255, 140, 0, 0.09);
  border: 1px solid #ff8c00;
  color: #ffae42;
  text-align: center;
  letter-spacing: 2px;
  cursor: pointer;
  border-radius: 16px 16px 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: height 0.35s ease, all 0.35s ease;
  backdrop-filter: blur(6px);
  box-shadow: 0 0 15px rgba(255, 140, 0, 0.2);
}

.menu-bottom:hover { height: 160px; }