/* ============================================================
   ANIMATIONS — Keyframes y utilidades de animación
   Todos los keyframes y clases reutilizables de animación.
   El control imperativo (IntersectionObserver) vive en JS.
   ============================================================ */

/* ============================================================
   KEYFRAMES
   ============================================================ */

/* --- Apariciones --- */

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* --- Movimientos contínuos --- */

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.85;
    transform: scale(1.03);
  }
}

@keyframes pulseGlow {
  0%,
  100% {
    box-shadow: 0 0 20px rgba(123, 47, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(123, 47, 255, 0.6);
  }
}

@keyframes rotateBorder {
  to {
    --venibex-angle: 360deg;
  }
}

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

/* --- Indicador de scroll del hero --- */
@keyframes scrollBounce {
  0%,
  20% {
    transform: translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateY(8px);
    opacity: 0.5;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

/* --- Gradiente animado en línea conectora del proceso --- */
@keyframes gradientFlow {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 200% 50%;
  }
}

/* --- Sparkle del badge superior del hero --- */
@keyframes sparkle {
  0%,
  100% {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.2) rotate(180deg);
  }
}

/* --- Aparición de mensaje de éxito en formulario --- */
@keyframes successPop {
  0% {
    opacity: 0;
    transform: scale(0.8) translateY(8px);
  }
  60% {
    opacity: 1;
    transform: scale(1.05) translateY(-2px);
  }
  100% {
    transform: scale(1) translateY(0);
  }
}

/* --- Shake (errores de formulario) --- */
@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-6px);
  }
  75% {
    transform: translateX(6px);
  }
}

/* ============================================================
   UTILIDADES DE REVEAL ON SCROLL
   La clase base aplica el estado inicial. JS agrega .is-visible
   cuando el elemento entra en viewport.
   ============================================================ */

/* Progressive enhancement: solo si JS está disponible aplicamos
   el estado oculto inicial. Sin JS, todo se ve siempre. */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 800ms var(--ease-out),
    transform 800ms var(--ease-out);
  will-change: opacity, transform;
}

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

/* Variantes direccionales */
.js .reveal--left {
  transform: translateX(-32px);
}

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

.js .reveal--right {
  transform: translateX(32px);
}

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

.js .reveal--scale {
  transform: scale(0.94);
}

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

/* ============================================================
   STAGGER (retrasar hijos secuencialmente)
   Aplicar .stagger-children al contenedor para escalonar
   los reveal de sus hijos directos.
   ============================================================ */

.stagger-children > .reveal:nth-child(1) {
  transition-delay: 0ms;
}
.stagger-children > .reveal:nth-child(2) {
  transition-delay: 100ms;
}
.stagger-children > .reveal:nth-child(3) {
  transition-delay: 200ms;
}
.stagger-children > .reveal:nth-child(4) {
  transition-delay: 300ms;
}
.stagger-children > .reveal:nth-child(5) {
  transition-delay: 400ms;
}
.stagger-children > .reveal:nth-child(6) {
  transition-delay: 500ms;
}
.stagger-children > .reveal:nth-child(7) {
  transition-delay: 600ms;
}

/* ============================================================
   UTILIDADES PARA APLICAR KEYFRAMES DIRECTAMENTE
   ============================================================ */

.animate-float {
  animation: float 3s var(--ease-default) infinite;
}

.animate-pulse {
  animation: pulse 2.5s var(--ease-default) infinite;
}

.animate-pulse-glow {
  animation: pulseGlow 3s var(--ease-default) infinite;
}

.animate-fade-in {
  animation: fadeIn var(--duration-slower) var(--ease-out) both;
}

.animate-fade-in-up {
  animation: fadeInUp var(--duration-slower) var(--ease-out) both;
}

.animate-scroll-bounce {
  animation: scrollBounce 2s var(--ease-default) infinite;
}

.animate-shake {
  animation: shake 350ms var(--ease-default);
}

.animate-success-pop {
  animation: successPop 600ms var(--ease-bounce) both;
}

/* ============================================================
   TRANSICIONES BASE (uso general en hover de elementos)
   ============================================================ */

.transition-base {
  transition: all var(--duration-base) var(--ease-default);
}

.transition-smooth {
  transition: all var(--duration-slow) var(--ease-out);
}