/* ==========================================================================
   Animations — Keyframes, Scroll-triggered, Transitions
   ========================================================================== */

/* ==========================================================================
   Scroll-triggered visibility states
   ========================================================================== */

/* Elements start hidden, become visible via Stimulus IntersectionObserver */
.animate-on-scroll {
  opacity: 0;
  will-change: opacity, transform;
}

.animate-on-scroll.is-visible {
  opacity: 1;
}

/* ==========================================================================
   Fade Up
   ========================================================================== */
.fade-up {
  transform: translateY(40px);
  transition:
    opacity var(--duration-slower) var(--ease-out),
    transform var(--duration-slower) var(--ease-out);
}

.fade-up.is-visible {
  transform: translateY(0);
}

/* ==========================================================================
   Fade In
   ========================================================================== */
.fade-in {
  transition: opacity var(--duration-slower) var(--ease-out);
}

/* ==========================================================================
   Fade Left
   ========================================================================== */
.fade-left {
  transform: translateX(-40px);
  transition:
    opacity var(--duration-slower) var(--ease-out),
    transform var(--duration-slower) var(--ease-out);
}

.fade-left.is-visible {
  transform: translateX(0);
}

/* ==========================================================================
   Fade Right
   ========================================================================== */
.fade-right {
  transform: translateX(40px);
  transition:
    opacity var(--duration-slower) var(--ease-out),
    transform var(--duration-slower) var(--ease-out);
}

.fade-right.is-visible {
  transform: translateX(0);
}

/* ==========================================================================
   Scale Up
   ========================================================================== */
.scale-up {
  transform: scale(0.9);
  transition:
    opacity var(--duration-slower) var(--ease-out),
    transform var(--duration-slower) var(--ease-spring);
}

.scale-up.is-visible {
  transform: scale(1);
}

/* ==========================================================================
   Stagger children — delay via CSS custom property
   ========================================================================== */
.stagger-children > * {
  transition-delay: calc(var(--stagger-index, 0) * 120ms);
}

/* ==========================================================================
   Row reveal (for tables)
   ========================================================================== */
.row-reveal {
  opacity: 0;
  transform: translateX(-20px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
  transition-delay: calc(var(--row-index, 0) * 150ms);
}

.row-reveal.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* ==========================================================================
   Keyframe Animations
   ========================================================================== */

/* Hero gradient mesh movement */
@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  25% {
    background-position: 100% 50%;
  }
  50% {
    background-position: 100% 0%;
  }
  75% {
    background-position: 0% 100%;
  }
}

/* Floating orbs */
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes floatReverse {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-25px, 25px) scale(0.95); }
  66% { transform: translate(20px, -15px) scale(1.05); }
}

/* Pulse glow */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 15px color-mix(in srgb, var(--color-accent) 8%, transparent);
  }
  50% {
    box-shadow: 0 0 25px color-mix(in srgb, var(--color-accent) 12%, transparent);
  }
}

/* Subtle rotation */
@keyframes gentleRotate {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(3deg); }
}

/* Typing cursor blink */
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Counter number roll */
@keyframes countUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Celebration pulse */
@keyframes celebratePulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* Shimmer effect */
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

/* Slide up from bottom with spring */
@keyframes slideUpSpring {
  0% {
    opacity: 0;
    transform: translateY(60px);
  }
  60% {
    opacity: 1;
    transform: translateY(-8px);
  }
  80% {
    transform: translateY(3px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero text reveal */
@keyframes heroReveal {
  0% {
    opacity: 0;
    transform: translateY(30px);
    filter: blur(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

/* Dot pulse for loading/typing indicator */
@keyframes dotPulse {
  0%, 60%, 100% { transform: scale(0.6); opacity: 0.4; }
  30% { transform: scale(1); opacity: 1; }
}

/* Confetti particles */
@keyframes confettiFall {
  0% {
    transform: translateY(-10px) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100px) rotate(720deg);
    opacity: 0;
  }
}

/* ==========================================================================
   Utility animation classes
   ========================================================================== */

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

.animate-float {
  animation: float 8s ease-in-out infinite;
}

.animate-float-reverse {
  animation: floatReverse 10s ease-in-out infinite;
}

.animate-shimmer {
  background-size: 200% 100%;
  animation: shimmer 3s linear infinite;
}

/* ==========================================================================
   Typing cursor
   ========================================================================== */
.typing-cursor {
  display: inline;
  font-weight: var(--weight-light);
  color: var(--color-accent);
  animation: blink 0.8s step-end infinite;
}

.typing-done .typing-cursor,
.typing-cursor.typing-done {
  opacity: 0;
  animation: none;
}

/* ==========================================================================
   Prefers reduced motion
   ========================================================================== */

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

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