/* ==========================================================================
   Animations.css — Scroll Reveal, Keyframes, Micro-interações
   Review 360BH — Design Premium
   ========================================================================== */

/* ==========================================================================
   1. SCROLL REVEAL — Classes base
   ========================================================================== */

/* Estado inicial — invisível */
.reveal {
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Variantes de direção */
.reveal-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-down {
  opacity: 0;
  transform: translateY(-30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Estado revelado */
.reveal.revealed,
.reveal-up.revealed,
.reveal-down.revealed,
.reveal-left.revealed,
.reveal-right.revealed,
.reveal-scale.revealed {
  opacity: 1;
  transform: translate(0, 0) scale(1);
}

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

/* ==========================================================================
   2. KEYFRAMES — Animações reutilizáveis
   ========================================================================== */

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

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

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

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

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

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

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

@keyframes slideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

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

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

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

@keyframes bounceIn {
  0% { opacity: 0; transform: scale(0.3); }
  50% { transform: scale(1.05); }
  70% { transform: scale(0.95); }
  100% { opacity: 1; transform: scale(1); }
}

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

/* ==========================================================================
   3. CLASSES DE ANIMAÇÃO UTILITÁRIAS
   ========================================================================== */
.animate-fadeIn { animation: fadeIn 0.4s ease forwards; }
.animate-fadeInUp { animation: fadeInUp 0.5s ease forwards; }
.animate-fadeInDown { animation: fadeInDown 0.5s ease forwards; }
.animate-scaleIn { animation: scaleIn 0.4s ease forwards; }
.animate-bounceIn { animation: bounceIn 0.6s ease forwards; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-shake { animation: shake 0.5s ease; }
.animate-spin { animation: spin 1s linear infinite; }

/* ==========================================================================
   4. LOADING / SKELETON
   ========================================================================== */
.skeleton {
  background: linear-gradient(90deg, 
    var(--border-light, #f1f5f9) 25%, 
    var(--border, #e2e8f0) 50%, 
    var(--border-light, #f1f5f9) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm, 6px);
}

.skeleton--text {
  height: 14px;
  width: 80%;
  margin-bottom: 8px;
}

.skeleton--title {
  height: 24px;
  width: 50%;
  margin-bottom: 12px;
}

.skeleton--circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.spinner--dark {
  border-color: var(--border, #e2e8f0);
  border-top-color: var(--primary, #0056b3);
}

/* ==========================================================================
   5. HOVER MICRO-INTERAÇÕES
   ========================================================================== */

/* Underline slide (nav links) */
.hover-underline {
  position: relative;
}

.hover-underline::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary, #0056b3);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Glow on hover */
.hover-glow {
  transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(var(--primary-rgb, 0, 86, 179), 0.15);
}

/* Lift effect */
.hover-lift {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}

/* ==========================================================================
   6. PREFERS-REDUCED-MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-up,
  .reveal-down,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .reveal-stagger > * {
    transition-delay: 0ms !important;
  }

  .animate-fadeIn,
  .animate-fadeInUp,
  .animate-fadeInDown,
  .animate-scaleIn,
  .animate-bounceIn {
    animation: none;
    opacity: 1;
  }

  .animate-pulse,
  .animate-spin,
  .animate-shake {
    animation: none;
  }

  .skeleton {
    animation: none;
  }

  .hover-lift:hover {
    transform: none;
  }
}