/* ── Animation System ────────────────────────────────────────────
   All animations respect prefers-reduced-motion.
   Uses only compositor-friendly properties: transform, opacity.
   ──────────────────────────────────────────────────────────────── */

/* ── Keyframes ───────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(-28px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeRight {
  from { opacity: 0; transform: translateX(28px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes scrollDot {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50%       { opacity: 0; transform: translateX(-50%) translateY(10px); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(26,110,245,.35); }
  50%       { box-shadow: 0 0 0 8px rgba(26,110,245,0); }
}

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

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

/* ── Reveal base state ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.reveal--left  { transform: translateX(-28px); }
.reveal.reveal--right { transform: translateX(28px); }
.reveal.reveal--scale { transform: scale(0.94); }
.reveal.reveal--fade  { transform: none; }

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger delays for child groups */
.reveal-group .reveal:nth-child(1) { transition-delay: 0ms; }
.reveal-group .reveal:nth-child(2) { transition-delay: 80ms; }
.reveal-group .reveal:nth-child(3) { transition-delay: 160ms; }
.reveal-group .reveal:nth-child(4) { transition-delay: 240ms; }
.reveal-group .reveal:nth-child(5) { transition-delay: 320ms; }
.reveal-group .reveal:nth-child(6) { transition-delay: 400ms; }

/* ── Hero stagger ────────────────────────────────────────────── */
.hero-animate .eyebrow { animation: fadeUp 0.6s cubic-bezier(0.16,1,0.3,1) 0.1s both; }
.hero-animate h1       { animation: fadeUp 0.7s cubic-bezier(0.16,1,0.3,1) 0.22s both; }
.hero-animate .hero-sub { animation: fadeUp 0.7s cubic-bezier(0.16,1,0.3,1) 0.34s both; }
.hero-animate .hero-cta { animation: fadeUp 0.6s cubic-bezier(0.16,1,0.3,1) 0.46s both; }
.hero-animate .hero-scroll-hint { animation: fadeIn 0.8s ease 0.9s both; }

/* ── Card hover lift ─────────────────────────────────────────── */
.card-hover {
  transition: transform 0.25s cubic-bezier(0.16,1,0.3,1),
              box-shadow 0.25s cubic-bezier(0.16,1,0.3,1);
  will-change: transform, box-shadow;
}
.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,.14);
}

/* Dark section card hover */
.section-dark .card-hover:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}

/* ── Button pulse (CTA primary) ──────────────────────────────── */
.btn-pulse {
  animation: pulseGlow 2.4s ease-in-out infinite;
}

/* ── Stat counter ────────────────────────────────────────────── */
.stat-value {
  display: inline-block;
  transition: transform 0.3s ease;
}

/* ── Trusted logo hover ──────────────────────────────────────── */
.trusted-list li {
  transition: opacity 0.25s ease, filter 0.25s ease, transform 0.25s ease;
}
.trusted-list li:hover {
  transform: scale(1.05);
}

/* ── Nav link underline animation ───────────────────────────── */
.nav-links a {
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  transition: width 0.25s cubic-bezier(0.16,1,0.3,1);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* ── Section header accent line ─────────────────────────────── */
.section-header::before {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 3px;
  margin: 0 auto 1.2rem;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.5s cubic-bezier(0.16,1,0.3,1);
}
.section-header.is-visible::before {
  transform: scaleX(1);
}

/* ── Focus states (Vercel guidelines compliance) ─────────────── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-animate .eyebrow,
  .hero-animate h1,
  .hero-animate .hero-sub,
  .hero-animate .hero-cta,
  .hero-animate .hero-scroll-hint {
    animation: none;
    opacity: 1;
  }

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

  .btn-pulse {
    animation: none;
  }

  .section-header::before {
    transform: scaleX(1);
    transition: none;
  }
}