/**
 * animations.css
 * Todas las animaciones: scroll reveal, tabs, accordion,
 * timeline, hover states, header sticky, counter
 */

/* ============================================
   PREFERENCIAS DE ACCESIBILIDAD
   ============================================ */

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

  .reveal,
  .reveal-up,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1 !important;
    transform: none !important;
  }

  .stepper-line-progress {
    transition: none !important;
  }
}

/* ============================================
   SCROLL REVEAL — IntersectionObserver
   ============================================ */

/* Estado inicial (invisible) */
.reveal {
  opacity: 0;
  transition:
    opacity var(--transition-slower),
    transform var(--transition-slower);
}

.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition:
    opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Estado visible */
.reveal.is-visible,
.reveal-up.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-scale.is-visible {
  opacity: 1;
  transform: none;
}

/* STAGGER — delay escalonado para grupos */
.stagger-1  { transition-delay: 0ms; }
.stagger-2  { transition-delay: 80ms; }
.stagger-3  { transition-delay: 160ms; }
.stagger-4  { transition-delay: 240ms; }
.stagger-5  { transition-delay: 320ms; }
.stagger-6  { transition-delay: 400ms; }
.stagger-7  { transition-delay: 480ms; }
.stagger-8  { transition-delay: 560ms; }

/* ============================================
   HERO — Animación de entrada inicial
   ============================================ */

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroPulse {
  0%, 100% { transform: scale(1); opacity: 0.08; }
  50%       { transform: scale(1.05); opacity: 0.12; }
}

.hero-eyebrow {
  animation: heroFadeUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.1s both;
}

.hero-title {
  animation: heroFadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.2s both;
}

.hero-subtitle {
  animation: heroFadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.35s both;
}

.hero-ctas {
  animation: heroFadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.5s both;
}

.hero-stats {
  animation: heroFadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.65s both;
}

.hero-shape {
  animation: heroPulse 8s ease-in-out infinite;
}

.hero-shape-2 {
  animation-delay: -3s;
  animation-duration: 10s;
}

.hero-shape-3 {
  animation-delay: -5s;
  animation-duration: 12s;
}

/* ============================================
   TABS — Transición fade + slide entre contenidos
   ============================================ */

@keyframes tabFadeIn {
  from {
    opacity: 0;
    transform: translateX(12px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

[role="tabpanel"].is-active {
  animation: tabFadeIn 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Tab indicator - sliding underline */
[role="tablist"] {
  position: relative;
}

/* ============================================
   ACCORDION — max-height + rotación chevron
   ============================================ */

.accordion-panel {
  transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ============================================
   HEADER STICKY — padding + sombra
   ============================================ */

.navbar {
  will-change: padding, box-shadow;
}

/* Definido en components.css, aquí solo las variantes de motion */

/* ============================================
   TIMELINE / STEPPER
   ============================================ */

@keyframes stepPop {
  0%   { transform: scale(0.8); opacity: 0; }
  60%  { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

.step.is-active .step-number {
  animation: stepPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   COUNTER ANIMATION
   ============================================ */

.counter {
  display: inline-block;
  transition:
    color var(--transition-slow),
    transform var(--transition-slow),
    opacity var(--transition-slow);
}

/* ============================================
   HOVER STATES — Interactivos
   ============================================ */

/* Card hover ya definido en components.css */

/* Link hover con subrayado animado */
.animated-link {
  position: relative;
  display: inline-block;
}

.animated-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background-color: var(--color-brand-primary);
  transition: width var(--transition-base);
}

.animated-link:hover::after {
  width: 100%;
}

/* ============================================
   ICON ANIMATIONS
   ============================================ */

@keyframes iconBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.icon-bounce:hover svg {
  animation: iconBounce 0.6s ease;
}

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

.icon-spin {
  animation: iconSpin 1.2s linear infinite;
}

/* ============================================
   LOADING / SKELETON
   ============================================ */

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

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-neutral-200) 25%,
    var(--color-neutral-100) 50%,
    var(--color-neutral-200) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

/* ============================================
   OVERLAY (mobile menu)
   ============================================ */

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

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: calc(var(--z-modal) - 1);
  backdrop-filter: blur(2px);
}

.nav-overlay.is-visible {
  display: block;
  animation: overlayFadeIn 0.2s ease;
}

/* ============================================
   SCROLL INDICATOR
   ============================================ */

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(8px); opacity: 0.5; }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  animation: scrollBounce 2s ease-in-out infinite;
  cursor: pointer;
  color: rgba(255,255,255,0.6);
}

.scroll-indicator svg {
  width: var(--icon-md);
  height: var(--icon-md);
}

/* ============================================
   BADGE APPEAR
   ============================================ */

@keyframes badgePop {
  from { transform: scale(0.8) translateY(4px); opacity: 0; }
  to   { transform: scale(1) translateY(0); opacity: 1; }
}

.badge.animated {
  animation: badgePop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* ============================================
   GRADIENT TEXT ANIMATION
   ============================================ */

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.gradient-text {
  background: linear-gradient(
    135deg,
    var(--color-tile-400),
    var(--color-sky-400),
    var(--color-tile-300)
  );
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s ease infinite;
}

/* ============================================
   FLOATING ELEMENTS
   ============================================ */

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

.float {
  animation: float 6s ease-in-out infinite;
}

.float-delayed {
  animation: float 6s ease-in-out 2s infinite;
}