/* ═══════════════════════════════════════════════════════════
   IRENACER — Animations
   Keyframes, scroll-reveal classes, micro-interactions.
   Uses IntersectionObserver via JS to add .is-visible class.
   ═══════════════════════════════════════════════════════════ */

/* ─── Keyframes ─── */

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

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

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes blurIn {
  from {
    opacity: 0;
    filter: blur(12px);
  }
  to {
    opacity: 1;
    filter: blur(0);
  }
}

@keyframes slideInUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.05); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ─── Scroll-Reveal Base ─── */
/* Elements start hidden, become visible when .is-visible is added by JS */

.reveal {
  opacity: 0;
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out),
    filter var(--duration-slow) var(--ease-out);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
}

/* ─── Reveal Variants ─── */

.reveal--up {
  transform: translateY(40px);
}
.reveal--up.is-visible {
  transform: translateY(0);
}

.reveal--down {
  transform: translateY(-40px);
}
.reveal--down.is-visible {
  transform: translateY(0);
}

.reveal--left {
  transform: translateX(-40px);
}
.reveal--left.is-visible {
  transform: translateX(0);
}

.reveal--right {
  transform: translateX(40px);
}
.reveal--right.is-visible {
  transform: translateX(0);
}

.reveal--scale {
  transform: scale(0.9);
}
.reveal--scale.is-visible {
  transform: scale(1);
}

.reveal--blur {
  filter: blur(8px);
}
.reveal--blur.is-visible {
  filter: blur(0);
}

/* ─── Stagger Delays ─── */
.delay-1 { transition-delay: 100ms; }
.delay-2 { transition-delay: 200ms; }
.delay-3 { transition-delay: 300ms; }
.delay-4 { transition-delay: 400ms; }
.delay-5 { transition-delay: 500ms; }
.delay-6 { transition-delay: 600ms; }

/* ─── Continuous Animations ─── */
.anim-float {
  animation: float 3s ease-in-out infinite;
}

.anim-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.anim-spin {
  animation: spin 1s linear infinite;
}

/* ─── Hover Micro-interactions ─── */
.hover-lift {
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-scale {
  transition: transform var(--duration-normal) var(--ease-spring);
}
.hover-scale:hover {
  transform: scale(1.03);
}

.hover-glow {
  transition: box-shadow var(--duration-normal) var(--ease-out);
}
.hover-glow:hover {
  box-shadow: 0 0 24px rgba(74, 173, 74, 0.25);
}

/* ─── Page Transition ─── */
.page-enter {
  animation: fadeIn var(--duration-slow) var(--ease-out);
}