/* ================================================================
   Animations — 动效库
   ================================================================ */

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Delay modifiers */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* Float animation */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Pulse glow */
@keyframes pulseGlow {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

/* Hero canvas background */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Bounce arrow */
@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

.hero__scroll svg {
  animation: bounceDown 2s ease-in-out infinite;
}

/* Card popout transform handles hover animation */

/* Mockup overlay enter */
.mockup-overlay {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.mockup-overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* Mockup phone enter */
.mockup-overlay.active .mockup-phone {
  animation: phoneEnter 0.6s cubic-bezier(0.32, 0.72, 0, 1) forwards;
}

@keyframes phoneEnter {
  from {
    opacity: 0;
    transform: translateY(60px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Lightbox */
.lightbox {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}
.lightbox.active {
  opacity: 1;
  pointer-events: all;
}

/* Filter button active transition */
.filter-btn {
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Page transition */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.project-detail .project-hero {
  animation: fadeInUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.project-detail .project-body {
  animation: fadeInUp 0.7s 0.15s cubic-bezier(0.16, 1, 0.3, 1) both;
}