/* glow */
#header-rage {
  color: white;
  text-shadow:
    2px 2px 4px #000000,
    0 0 10px black;
}

#header-run {
  color: #ffd700;
  text-shadow:
    2px 2px 4px #000000,
    0 0 10px #ffd700;
}

#start-button {
  position: relative;
  overflow: hidden;

  background: linear-gradient(to right, #ffb300, #ff8c00);
  border: 0;

  transition:
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

#start-button:hover {
  box-shadow: 0 0 30px rgba(253, 184, 19, 0.6);
  transform: scale(1.05);
}

#start-button:active {
  transform: scale(0.95);
  box-shadow: none;
}

#start-button::before {
  content: "";
  position: absolute;
  inset: 0;
  left: -200%;
  width: 50%;
  height: 100%;

  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.35),
    transparent
  );

  pointer-events: none;
}

#start-button::before {
  animation: shine 2s ease-in-out infinite;
  animation-delay: 1s;
}

@keyframes shine {
  from {
    left: -200%;
  }
  to {
    left: 200%;
  }
}

#leaderboard-button {
  border: 2px solid #ffc107;
  color: #ffc107;
  transition:
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

#leaderboard-button:hover {
  transform: scale(1.05);
}

#leaderboard-button:active {
  transform: scale(0.95);
}