/* =========================================
   Animations - Keyframes, Micro-interactions
   ========================================= */

/* ---- KEYFRAMES ---- */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(12px); opacity: 0.3; }
}

@keyframes glow-drift {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, 30px) scale(1.1); }
  100% { transform: translate(20px, -20px) scale(0.95); }
}

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

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ---- SCROLL REVEAL STATE ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  will-change: opacity, transform;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

/* Stagger delays for grid items */
.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }

/* ---- HOVER MICRO-INTERACTIONS ---- */

/* Link underline grow */
.hover-underline {
  position: relative;
}

.hover-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--duration-normal) var(--ease-out);
}

.hover-underline:hover::after {
  width: 100%;
}

/* Scale on hover */
.hover-scale {
  transition: transform var(--duration-fast) var(--ease-out);
}

.hover-scale:hover {
  transform: scale(1.05);
}

/* Glow pulse for active items */
.glow-pulse {
  animation: glow-pulse-kf 2s ease-in-out infinite;
}

@keyframes glow-pulse-kf {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.1); }
}

/* ---- REDUCED MOTION ---- */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero__glow {
    animation: none;
  }

  .hero__scroll-dot {
    animation: none;
  }

  .hero__badge-dot {
    animation: none;
  }

  .hero__cursor {
    animation: none;
    opacity: 1;
  }
}