/**
 * animations.css — Motion & Transitions
 * ========================================
 * Scroll-triggered reveal animations and keyframe definitions.
 * Respects prefers-reduced-motion for accessibility.
 */

/* ── Keyframes ───────────────────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

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

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 24px var(--color-accent-glow); }
  50%       { box-shadow: 0 0 48px var(--color-accent-glow), 0 0 80px var(--color-accent-glow); }
}

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

/* ── Reveal on scroll — base state (hidden) ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}

/* Stagger delays for child elements */
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }

/* Triggered class added by main.js IntersectionObserver */
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Hero entrance animations ────────────────────────────────────────────── */
.hero-badge    { animation: fadeUp 0.5s ease 0.1s both; }
.hero h1       { animation: fadeUp 0.6s ease 0.2s both; }
.hero-description { animation: fadeUp 0.6s ease 0.3s both; }
.hero-actions  { animation: fadeUp 0.6s ease 0.4s both; }
.hero-visual   { animation: fadeIn 0.8s ease 0.5s both; }

/* ── Hero mockup float ───────────────────────────────────────────────────── */
.hero-mockup {
  animation: float 4s ease-in-out infinite;
}

/* ── Hover lift on cards ─────────────────────────────────────────────────── */
.card-hover {
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ── Shimmer accent text ─────────────────────────────────────────────────── */
.text-shimmer {
  background: linear-gradient(
    90deg,
    var(--color-accent) 0%,
    var(--color-accent-light) 40%,
    var(--color-premium) 60%,
    var(--color-accent) 100%
  );
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 3s linear infinite;
}

/* ── Reduced motion overrides ────────────────────────────────────────────── */
@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; }
  .hero-mockup { animation: none; }
  .text-shimmer { animation: none; }
}