/* ============================================================
   ANIMACIONES — keyframes y clases de scroll animation
   ============================================================ */

/* ── Keyframes ───────────────────────────────────────────────── */

@keyframes scrollDrop {
  0%   { opacity: 0.25; transform: translateY(0); }
  50%  { opacity: 0.65; transform: translateY(6px); }
  100% { opacity: 0.25; transform: translateY(0); }
}

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

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

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

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

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

/* ── Clases de scroll animation (IntersectionObserver) ───────── */

/* Estado inicial — invisible antes de entrar al viewport */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

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

/* Variantes de dirección */
.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

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

/* Delays escalonados para grids (stagger) */
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.12s; }
.stagger-3 { transition-delay: 0.19s; }
.stagger-4 { transition-delay: 0.26s; }
.stagger-5 { transition-delay: 0.33s; }
.stagger-6 { transition-delay: 0.40s; }

/* ── Hero animations ─────────────────────────────────────────── */

.hero-animate-1 {
  animation: fadeInUp 0.8s var(--ease-out) 0.1s both;
}

.hero-animate-2 {
  animation: fadeInUp 0.8s var(--ease-out) 0.25s both;
}

.hero-animate-3 {
  animation: fadeInUp 0.8s var(--ease-out) 0.4s both;
}

.hero-animate-4 {
  animation: fadeInUp 0.8s var(--ease-out) 0.55s both;
}

.hero-animate-5 {
  animation: fadeInUp 0.8s var(--ease-out) 0.7s both;
}

.hero-isotipo-animate {
  animation: fadeIn 1.2s var(--ease-out) 0.3s both;
}

/* ── Reducir movimiento si el usuario lo prefiere ─────────────── */

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

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