/* ============================================
   ANIMATIONS — Keyframes, Transitions, Reveals
   ============================================ */

/* ---- Keyframes ---- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: var(--shadow-accent); }
  50% { box-shadow: 0 4px 30px rgba(15, 206, 171, 0.4), var(--shadow-elevated); }
}

@keyframes checkmark {
  0% { transform: scale(0) rotate(-45deg); opacity: 0; }
  50% { transform: scale(1.2) rotate(0deg); opacity: 1; }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

/* ---- Reveal Classes (for IntersectionObserver) ---- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s var(--ease-out),
              transform 0.4s var(--ease-out);
}

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

/* Stagger delays for children */
.reveal-stagger > .reveal:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > .reveal:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger > .reveal:nth-child(3) { transition-delay: 160ms; }
.reveal-stagger > .reveal:nth-child(4) { transition-delay: 240ms; }
.reveal-stagger > .reveal:nth-child(5) { transition-delay: 320ms; }
.reveal-stagger > .reveal:nth-child(6) { transition-delay: 400ms; }
.reveal-stagger > .reveal:nth-child(7) { transition-delay: 480ms; }
.reveal-stagger > .reveal:nth-child(8) { transition-delay: 560ms; }

/* ---- Animate Utilities ---- */
.animate-fadeIn {
  animation: fadeIn 0.3s var(--ease-out) forwards;
}

.animate-slideUp {
  animation: slideUp 0.4s var(--ease-out) forwards;
}

.animate-slideDown {
  animation: slideDown 0.3s var(--ease-out) forwards;
}

.animate-scaleIn {
  animation: scaleIn 0.3s var(--ease-out) forwards;
}

.animate-pulse {
  animation: pulseGlow 2s var(--ease-smooth) infinite;
}

/* ---- Success Checkmark ---- */
.success-check {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--success-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.success-check__icon {
  width: 32px;
  height: 32px;
  color: var(--success);
  animation: checkmark 0.5s var(--ease-out) forwards;
}

/* ---- Number Count-Up ---- */
.count-up {
  display: inline-block;
  animation: countUp 0.6s var(--ease-out) forwards;
}

/* ---- Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---- Command Center / Smart Form entrance ---- */
@keyframes cardReveal {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.card-reveal {
  animation: cardReveal 300ms var(--ease-out) both;
}

.card-reveal-stagger > * {
  animation: cardReveal 300ms var(--ease-out) both;
}
.card-reveal-stagger > *:nth-child(1) { animation-delay: 0ms; }
.card-reveal-stagger > *:nth-child(2) { animation-delay: 60ms; }
.card-reveal-stagger > *:nth-child(3) { animation-delay: 120ms; }
.card-reveal-stagger > *:nth-child(4) { animation-delay: 180ms; }
.card-reveal-stagger > *:nth-child(5) { animation-delay: 240ms; }
.card-reveal-stagger > *:nth-child(6) { animation-delay: 300ms; }

/* ---- Skeleton Loading ---- */
@keyframes skeleton-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface-elevated) 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius);
}
.skeleton--card {
  height: 120px;
  margin-bottom: var(--space-3);
}
.skeleton--text {
  height: 16px;
  margin-bottom: var(--space-2);
  max-width: 80%;
}
.skeleton--text:nth-child(2) { max-width: 60%; }
.skeleton--text:nth-child(3) { max-width: 40%; }