/* ===== Animations & transitions ===== */

/* Hero stagger */
.animate-in {
  opacity: 0;
  transform: translateY(16px);
  animation: fade-up 0.6s var(--ease-out) forwards;
}
.animate-in[style*="--i: 1"] { animation-delay: 0.1s; }
.animate-in[style*="--i: 2"] { animation-delay: 0.2s; }
.animate-in[style*="--i: 3"] { animation-delay: 0.3s; }
.animate-in[style*="--i: 4"] { animation-delay: 0.4s; }

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

/* Scroll reveal (JS adds .reveal-visible) */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.timeline .reveal { transition-delay: 0s; }
.timeline .reveal.reveal-visible { transition-delay: 0.05s; }
.timeline__item.reveal { transition-delay: 0.1s; }
.timeline__item.reveal.reveal-visible { transition-delay: 0.15s; }

.grid--projects .reveal { transition-delay: 0s; }
.grid--projects .project-card:nth-child(1).reveal.reveal-visible { transition-delay: 0.05s; }
.grid--projects .project-card:nth-child(2).reveal.reveal-visible { transition-delay: 0.1s; }
.grid--projects .project-card:nth-child(3).reveal.reveal-visible { transition-delay: 0.15s; }

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-dim));
  z-index: 101;
  transition: width 0.1s linear;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 8px;
  transition: background var(--duration-fast), color var(--duration-fast), transform var(--duration-fast);
}
.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-primary);
}
.btn--primary:hover {
  background: var(--accent-dim);
  color: var(--bg-primary);
}

.btn--ghost {
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.btn--small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Easter egg (Konami: ↑↑↓↓←→←→BA) */
body.easter-egg {
  animation: egg-glow 0.5s ease-out;
}
@keyframes egg-glow {
  0% { filter: none; }
  50% { filter: drop-shadow(0 0 40px var(--accent-glow)); }
  100% { filter: none; }
}

@media (prefers-reduced-motion: no-preference) {
  body.easter-egg .hero__name {
    animation: egg-shake 0.4s ease-in-out 2;
  }
}
@keyframes egg-shake {
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
  100% { transform: translateX(0); }
}