/* ==========================================================================
   ANIMATIONS.CSS — Keyframes & Scroll-triggered Animations
   GPU-accelerated using only transform & opacity
   ========================================================================== */

/* ---------- KEYFRAME ANIMATIONS ---------- */

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

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.85);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ---------- SCROLL-TRIGGERED ANIMATION CLASSES ---------- */

/* Base state: hidden until intersection observer triggers */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* Direction variants */
.animate-on-scroll[data-animation="fade-up"] {
  transform: translateY(30px);
}

.animate-on-scroll[data-animation="fade-down"] {
  transform: translateY(-30px);
}

.animate-on-scroll[data-animation="fade-left"] {
  transform: translateX(-30px);
}

.animate-on-scroll[data-animation="fade-right"] {
  transform: translateX(30px);
}

.animate-on-scroll[data-animation="scale-in"] {
  transform: scale(0.85);
}

.animate-on-scroll[data-animation="fade-in"] {
  transform: none;
}

/* Animated state for all variants */
.animate-on-scroll.animated[data-animation="fade-up"],
.animate-on-scroll.animated[data-animation="fade-down"] {
  transform: translateY(0);
}

.animate-on-scroll.animated[data-animation="fade-left"],
.animate-on-scroll.animated[data-animation="fade-right"] {
  transform: translateX(0);
}

.animate-on-scroll.animated[data-animation="scale-in"] {
  transform: scale(1);
}

/* Stagger delays */
.animate-on-scroll[data-delay="100"] { transition-delay: 100ms; }
.animate-on-scroll[data-delay="200"] { transition-delay: 200ms; }
.animate-on-scroll[data-delay="300"] { transition-delay: 300ms; }
.animate-on-scroll[data-delay="400"] { transition-delay: 400ms; }
.animate-on-scroll[data-delay="500"] { transition-delay: 500ms; }
.animate-on-scroll[data-delay="600"] { transition-delay: 600ms; }
.animate-on-scroll[data-delay="700"] { transition-delay: 700ms; }
.animate-on-scroll[data-delay="800"] { transition-delay: 800ms; }

/* Duration variants */
.animate-on-scroll[data-duration="fast"] {
  transition-duration: 0.4s;
}

.animate-on-scroll[data-duration="slow"] {
  transition-duration: 1s;
}

/* ---------- REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .brands__track {
    animation: none;
  }

  .hero__shape,
  .hero__float-card {
    animation: none;
  }
}