/* 淡入淡出 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

/* 滑入滑出 */
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* 升級動畫 */
@keyframes upgradeRoll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-100%);
  }
}

/* 開箱動畫 */
@keyframes caseOpen {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

/* 煙火效果 */
@keyframes firework {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  50% {
    transform: scale(1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.2);
    opacity: 0;
  }
}

/* 閃光效果 */
@keyframes glow {
  0% {
    box-shadow: 0 0 5px var(--primary-color);
  }
  50% {
    box-shadow: 0 0 20px var(--primary-color);
  }
  100% {
    box-shadow: 0 0 5px var(--primary-color);
  }
}

/* 抖動效果 */
@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}