/* Stars Container */
#stars-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.star {
  position: absolute;
  background-color: #fff;
  border-radius: 50%;
  animation: twinkle var(--duration) ease-in-out infinite;
  opacity: var(--opacity);
}

@keyframes twinkle {
  0%, 100% {
    opacity: var(--opacity);
    transform: scale(1);
  }
  50% {
    opacity: var(--opacity-half);
    transform: scale(0.5);
  }
}

/* Parallax Effects */
.parallax {
  transition: transform 0.2s ease-out;
}

/* Button Animations */
.btn-play, .btn-explore, .btn-play-game {
  position: relative;
  overflow: hidden;
}

.btn-play::before, 
.btn-explore::before, 
.btn-play-game::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: 0.5s;
}

.btn-play:hover::before, 
.btn-explore:hover::before, 
.btn-play-game:hover::before {
  left: 100%;
}

/* Game Card Hover Animation */
.game-card::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  z-index: -1;
  border-radius: 16px;
  background: linear-gradient(45deg, var(--color-neon-blue), var(--color-purple), var(--color-neon-pink));
  opacity: 0;
  transition: var(--transition-smooth);
}

.game-card:hover::before {
  opacity: 0.7;
  animation: rotate 3s linear infinite;
}

@keyframes rotate {
  0% {
    filter: hue-rotate(0deg);
  }
  100% {
    filter: hue-rotate(360deg);
  }
}

/* Mission Card Animation */
.mission-icon {
  transform-style: preserve-3d;
  transition: transform 0.5s ease;
}

.mission-card:hover .mission-icon {
  transform: rotateY(180deg);
}

/* Nav Menu Animation */
.menu-open span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.menu-open span:nth-child(2) {
  opacity: 0;
}

.menu-open span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Page Transition */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-deep-navy);
  z-index: 9999;
  transform: translateY(-100%);
  transition: transform 0.5s ease-in-out;
}

.page-transition.active {
  transform: translateY(0);
}

/* Fade In Animation */
.fade-in {
  animation: fadeIn 1s ease-in-out forwards;
  opacity: 0;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Staggered Fade In for Game Cards */
.games-grid .game-card {
  opacity: 0;
  transform: translateY(30px);
}

.games-grid.loaded .game-card {
  animation: cardFadeIn 0.6s ease-in-out forwards;
}

.games-grid.loaded .game-card:nth-child(2) {
  animation-delay: 0.1s;
}

.games-grid.loaded .game-card:nth-child(3) {
  animation-delay: 0.2s;
}

.games-grid.loaded .game-card:nth-child(4) {
  animation-delay: 0.3s;
}

.games-grid.loaded .game-card:nth-child(5) {
  animation-delay: 0.4s;
}

.games-grid.loaded .game-card:nth-child(6) {
  animation-delay: 0.5s;
}

.games-grid.loaded .game-card:nth-child(7) {
  animation-delay: 0.6s;
}

.games-grid.loaded .game-card:nth-child(8) {
  animation-delay: 0.7s;
}

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Pulse Animation for Play Now Button */
.play-now .btn-play {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(54, 226, 236, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(54, 226, 236, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(54, 226, 236, 0);
  }
}