/* ==========================================================================
   悠兔机场 (youtu-jichang.homes) - Micro Animations & Tactile Effects
   ========================================================================== */

/* 印章微闪与呼吸感效果 */
@keyframes stampPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.03); }
  100% { transform: scale(1); }
}

.seal-stamp-icon {
  animation: stampPulse 4s ease-in-out infinite;
}

/* 便签纸轻移特效 */
.paper-float {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.paper-float:hover {
  transform: translateY(-4px) rotate(-0.5deg);
}

/* 按钮点击触感波纹 */
.btn-stamp:active, .btn-wood:active {
  transform: scale(0.98);
}

/* 渐显与上升 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

/* 延迟动画类 */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }