nav {
  position: relative;
  background: linear-gradient(to bottom, #ffffff 0 50%, #d7141a 50% 100%);
}

nav::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 38%;
  height: 100%;
  background-color: #11457e;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  z-index: 0;
}

nav .nav-inner {
  position: relative;
  z-index: 1;
}

#command-hint {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 60px;
  font-weight: bold;
  color: white;
  display: none;
  opacity: 0;
  padding: 20px 40px;
  border-radius: 12px;
  text-align: center;
  transition: opacity 1s ease;
  z-index: 9999;
  background: rgba(0,0,0,0.6);
}