/* =====================================================================
   animations.css — @keyframes + reveal classes
   ===================================================================== */

/* ---- Reveal on scroll ---- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.from-left {
  transform: translateX(-40px);
}
.reveal.from-right {
  transform: translateX(40px);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Staggered children */
.reveal-children > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-children.visible > * {
  opacity: 1;
  transform: none;
}
.reveal-children.visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal-children.visible > *:nth-child(2) { transition-delay: 100ms; }
.reveal-children.visible > *:nth-child(3) { transition-delay: 200ms; }
.reveal-children.visible > *:nth-child(4) { transition-delay: 300ms; }
.reveal-children.visible > *:nth-child(5) { transition-delay: 400ms; }
.reveal-children.visible > *:nth-child(6) { transition-delay: 500ms; }

/* ---- Keyframes ---- */

/* Aurora / nebula blob pulse */
@keyframes aurora {
  0%   { transform: scale(1) rotate(0deg); opacity: 0.4; }
  33%  { transform: scale(1.15) rotate(120deg); opacity: 0.6; }
  66%  { transform: scale(0.9) rotate(240deg); opacity: 0.35; }
  100% { transform: scale(1) rotate(360deg); opacity: 0.4; }
}

/* Hero title float */
@keyframes float-up {
  0%   { opacity: 0; transform: translateY(40px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Fade in */
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Pulse glow on CTA */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 4px 20px rgba(0, 212, 255, 0.35); }
  50%       { box-shadow: 0 4px 40px rgba(0, 212, 255, 0.65), 0 0 80px rgba(123, 47, 255, 0.3); }
}

/* Spin slow for logo orbits */
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes spin-reverse {
  from { transform: rotate(0deg); }
  to   { transform: rotate(-360deg); }
}

/* Scroll hint bounce */
@keyframes bounce-y {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}

/* Nav link underline slide */
@keyframes slide-in-right {
  from { transform: translateX(-20px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

/* ---- Applied animations ---- */
.animate-float-up {
  animation: float-up 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.animate-float-up.delay-1 { animation-delay: 0.15s; }
.animate-float-up.delay-2 { animation-delay: 0.3s; }
.animate-float-up.delay-3 { animation-delay: 0.45s; }
.animate-float-up.delay-4 { animation-delay: 0.6s; }

.animate-fade-in {
  animation: fade-in 0.6s ease both;
}

.animate-pulse-glow {
  animation: pulse-glow 3s ease-in-out infinite;
}

.animate-bounce {
  animation: bounce-y 2s ease-in-out infinite;
}

/* ---- Progress bar ---- */
.progress-bar-wrap {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--space-sm);
}
.progress-bar-fill {
  height: 100%;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}