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

@keyframes marquee-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

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

/* ============================================
   SCROLL REVEAL BASE
   ============================================ */

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
  }

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

  /* Staggered children */
  .reveal-stagger .reveal:nth-child(1) { transition-delay: 0ms; }
  .reveal-stagger .reveal:nth-child(2) { transition-delay: 150ms; }
  .reveal-stagger .reveal:nth-child(3) { transition-delay: 300ms; }
  .reveal-stagger .reveal:nth-child(4) { transition-delay: 450ms; }
  .reveal-stagger .reveal:nth-child(5) { transition-delay: 600ms; }
  .reveal-stagger .reveal:nth-child(6) { transition-delay: 750ms; }
  .reveal-stagger .reveal:nth-child(7) { transition-delay: 900ms; }
  .reveal-stagger .reveal:nth-child(8) { transition-delay: 1050ms; }

  /* Hero-specific entrance */
  .hero-headline.reveal {
    transition-delay: 0ms;
  }

  .hero-subline.reveal {
    transition-delay: 200ms;
  }

  /* Hero bottom line */
  .hero-line {
    transition: width 0.8s var(--ease-out) 0.6s;
  }

  /* Hero scroll indicator */
  .hero-scroll {
    animation: hero-scroll-bounce 2s ease-in-out infinite;
    animation-delay: 1.5s;
  }

  /* About quote bar */
  .about-quote-bar {
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--duration-slow) var(--ease-out);
  }

  .about-quote.is-visible .about-quote-bar {
    transform: scaleY(1);
  }

  /* Process steps stagger */
  .process-step.reveal:nth-child(1) { transition-delay: 0ms; }
  .process-step.reveal:nth-child(2) { transition-delay: 150ms; }
  .process-step.reveal:nth-child(3) { transition-delay: 300ms; }
  .process-step.reveal:nth-child(4) { transition-delay: 450ms; }
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }

  .marquee-track {
    animation-duration: 80s;
  }

  .hero-scroll {
    animation: none;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}