/* ============================================================
   ME ENERGY INDIA — ANIMATIONS
   Keyframes, scroll-reveal utility classes, transitions
   ============================================================ */

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

@keyframes hero-progress-fill {
  from { width: 0%; }
  to { width: 100%; }
}

@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.08); }
}

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

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---- Reveal-on-scroll base states ----
   JS toggles .is-visible on these once IntersectionObserver fires */

.reveal {
  opacity: 0;
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  will-change: transform, opacity;
}

.reveal.fade-up {
  transform: translateY(48px);
}

.reveal.fade-down {
  transform: translateY(-32px);
}

.reveal.fade-left {
  transform: translateX(-56px);
}

.reveal.fade-right {
  transform: translateX(56px);
}

.reveal.fade-scale {
  transform: scale(0.92);
}

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

/* Stagger children helper — apply .reveal-stagger to parent, children get delay via JS-set --i */
.reveal-stagger > * {
  transition-delay: calc(var(--i, 0) * 0.09s);
}

/* Floating decorative elements */
.float-el {
  animation: float-y 6s ease-in-out infinite;
}

.pulse-el {
  animation: pulse-glow 4s ease-in-out infinite;
}

/* Hover image zoom container */
.zoom-frame {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.zoom-frame img,
.zoom-frame .zoom-visual {
  transition: transform var(--dur-slow) var(--ease-out);
}

.zoom-frame:hover img,
.zoom-frame:hover .zoom-visual {
  transform: scale(1.06);
}

/* Parallax layers — JS sets transform via translate3d on scroll */
.parallax-layer {
  will-change: transform;
}

/* Counter number ticking */
.counter {
  font-variant-numeric: tabular-nums;
}

/* Marquee logo/text strip */
.marquee {
  overflow: hidden;
  white-space: nowrap;
  -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}

.marquee-track {
  display: inline-flex;
  gap: var(--space-2xl);
  animation: marquee-scroll 32s linear infinite;
}

.marquee:hover .marquee-track {
  animation-play-state: paused;
}

/* Loading screen bar */
.loading-bar {
  width: 220px;
  height: 2px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.loading-bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-green-bright), var(--color-yellow));
  transition: width 0.4s var(--ease-out);
}

/* Comparison / feature rows fade */
.reveal-row {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

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

/* Body lock when mobile menu open */
body.menu-open {
  overflow: hidden;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}