/* ============================================
   SPIRE LIGHT — ANIMATIONS
   Keyframes, scroll reveals, hover effects
   ============================================ */

/* ── Keyframes ── */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes floatSlow {
  0%, 100% { transform: translateY(0) translateX(0); }
  33%      { transform: translateY(-5px) translateX(3px); }
  66%      { transform: translateY(3px) translateX(-2px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50%      { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(59, 164, 245, 0.1); }
}

@keyframes waveformLine {
  0%   { transform: scaleY(0.3); }
  50%  { transform: scaleY(1); }
  100% { transform: scaleY(0.3); }
}

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

@keyframes drawLine {
  from { stroke-dashoffset: 1000; }
  to   { stroke-dashoffset: 0; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ── Scroll Reveal System ── */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--dur-slower) var(--ease-out),
              transform var(--dur-slower) var(--ease-out);
  will-change: opacity, transform;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--dur-slower) var(--ease-out),
              transform var(--dur-slower) var(--ease-out);
  will-change: opacity, transform;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--dur-slower) var(--ease-out),
              transform var(--dur-slower) var(--ease-out);
  will-change: opacity, transform;
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity var(--dur-slower) var(--ease-out),
              transform var(--dur-slower) var(--ease-out);
  will-change: opacity, transform;
}

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

/* Stagger delays for grid children */
.stagger > *:nth-child(1)  { transition-delay: 0ms; }
.stagger > *:nth-child(2)  { transition-delay: 80ms; }
.stagger > *:nth-child(3)  { transition-delay: 160ms; }
.stagger > *:nth-child(4)  { transition-delay: 240ms; }
.stagger > *:nth-child(5)  { transition-delay: 320ms; }
.stagger > *:nth-child(6)  { transition-delay: 400ms; }
.stagger > *:nth-child(7)  { transition-delay: 480ms; }
.stagger > *:nth-child(8)  { transition-delay: 560ms; }
.stagger > *:nth-child(9)  { transition-delay: 640ms; }
.stagger > *:nth-child(10) { transition-delay: 720ms; }

/* ── Hover Effects ── */

.hover-lift {
  transition: transform var(--dur-normal) var(--ease-out),
              box-shadow var(--dur-normal) var(--ease-out);
}

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

.hover-glow {
  transition: box-shadow var(--dur-normal) var(--ease-out);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow-sm);
}

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