/* ============================================
   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 ── */

/* These reveal classes animate ONCE on viewport entry, then stay
   static for the rest of the page lifetime. Declaring will-change
   on them perpetually keeps every revealed element on its own GPU
   layer, which on low-RAM laptops costs more than it saves. The
   transitions still composite cleanly without the hint. */

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

.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);
}

.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);
}

.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);
}

.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;
  }
}

/* ──────────────────────────────────────────────────────────────
   Hero reveal — label & headline ride the section-reveal system
   (data-typewriter + data-stagger-words). The sub, CTAs and rating
   pill cascade in after the headline lands. hero-typing.js only
   flips the gating class once layout is ready.
   ────────────────────────────────────────────────────────────── */

.hero-content.is-anim-ready .hero-content__sub,
.hero-content.is-anim-ready .hero-content__ctas,
.hero-content.is-anim-ready .hero-content__trust,
.hero-content.is-anim-ready .hero-rating {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 520ms cubic-bezier(0.22, 1, 0.36, 1),
              transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.hero-content.is-anim-ready.is-typing .hero-content__sub,
.hero-content.is-anim-ready.is-typing .hero-content__ctas,
.hero-content.is-anim-ready.is-typing .hero-content__trust,
.hero-content.is-anim-ready.is-typing .hero-rating {
  opacity: 1;
  transform: translateY(0);
}

.hero-content.is-anim-ready.is-typing .hero-content__sub   { transition-delay: 1000ms; }
.hero-content.is-anim-ready.is-typing .hero-content__ctas  { transition-delay: 1180ms; }
.hero-content.is-anim-ready.is-typing .hero-content__trust { transition-delay: 1340ms; }
/* Legacy direct-rating selector kept for any page still using a bare
   .hero-rating outside of .hero-content__trust. */
.hero-content.is-anim-ready.is-typing .hero-rating         { transition-delay: 1340ms; }

/* Hero headline reads in writing order — wider per-word gap and a
   tighter per-word transition so each word lands before the next
   begins, instead of the words washing in together. */
.hero-content__headline[data-stagger-words] .sw-word {
  transition: opacity 280ms cubic-bezier(0.22, 1, 0.36, 1),
              transform 280ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: calc(var(--i, 0) * 130ms + 100ms);
}

@media (prefers-reduced-motion: reduce) {
  .hero-content.is-anim-ready .hero-content__sub,
  .hero-content.is-anim-ready .hero-content__ctas,
  .hero-content.is-anim-ready .hero-content__trust,
  .hero-content.is-anim-ready .hero-rating {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ──────────────────────────────────────────────────────────────
   Section reveals — opt-in via data-typewriter (kickers) and
   data-stagger-words (headlines). Wired up in js/section-reveal.js.
   The intent is a quiet "speech-to-text" cadence on each section's
   intro, mirroring the hero's mic-typing motif without being noisy.
   ────────────────────────────────────────────────────────────── */

[data-typewriter] {
  position: relative;
  display: inline-block;
}
[data-typewriter] .tw-char {
  display: inline-block;
  white-space: pre;
  opacity: 0;
  transform: translateY(3px);
  transition: opacity 120ms ease-out, transform 120ms ease-out;
  transition-delay: calc(var(--i, 0) * 25ms + 80ms);
}
[data-typewriter].is-revealed .tw-char {
  opacity: 1;
  transform: translateY(0);
}
[data-typewriter] .tw-caret {
  display: inline-block;
  width: 1.5px;
  height: 0.95em;
  margin-left: 3px;
  vertical-align: -0.1em;
  background: currentColor;
  opacity: 0;
}
[data-typewriter].is-revealed .tw-caret {
  opacity: 0.55;
  animation: tw-caret-blink 600ms steps(2, start) infinite;
}
[data-typewriter].is-typed .tw-caret {
  animation: none;
  opacity: 0;
  transition: opacity 240ms ease;
}
@keyframes tw-caret-blink {
  to { opacity: 0; }
}

[data-stagger-words] .sw-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 380ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 380ms cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: calc(var(--i, 0) * 60ms + 120ms);
}
[data-stagger-words].is-revealed .sw-word {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-typewriter] .tw-char,
  [data-stagger-words] .sw-word {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  [data-typewriter] .tw-caret { display: none !important; }
}