/* ============================================
   ICOSF Theme — Animations
   ============================================ */

/* ─── Section transition: each section fades up dramatically as you scroll ─── */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* Section-level reveal: every <section> gets a soft fade-up — applied via JS */
.section-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(0.22, 1, 0.36, 1),
              transform 1s cubic-bezier(0.22, 1, 0.36, 1);
}

.section-reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Stagger children — pronounced slide + fade ─── */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.stagger-children--visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger-children--visible > *:nth-child(2) { transition-delay: 100ms; }
.stagger-children--visible > *:nth-child(3) { transition-delay: 200ms; }
.stagger-children--visible > *:nth-child(4) { transition-delay: 300ms; }
.stagger-children--visible > *:nth-child(5) { transition-delay: 400ms; }
.stagger-children--visible > *:nth-child(6) { transition-delay: 500ms; }
.stagger-children--visible > *:nth-child(7) { transition-delay: 600ms; }
.stagger-children--visible > *:nth-child(8) { transition-delay: 700ms; }

.stagger-children--visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Hero text staggered fade-up (cinematic entry) ─── */
@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__heading,
.hero__text,
.hero__ctas {
  opacity: 0;
  animation: heroFadeUp 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero__heading { animation-delay: 0.2s; }
.hero__text { animation-delay: 0.5s; }
.hero__ctas { animation-delay: 0.8s; }

/* ─── Ken Burns Hero ─── */
@keyframes kenBurns {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.1);
  }
}

.hero__bg--kenburns img {
  animation: kenBurns 25s ease-in-out infinite alternate;
}

/* ─── Geometric pattern drift ─── */
@keyframes patternDrift {
  0% { transform: translate(0, 0); }
  50% { transform: translate(15px, -10px); }
  100% { transform: translate(0, 0); }
}

.hero__pattern {
  animation: patternDrift 30s ease-in-out infinite;
}

/* ─── Pulse ─── */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ─── Subtle floating motion (for icons/badges) ─── */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

/* ─── CTA shimmer (button hover gloss) ─── */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer {
  background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-200) 50%, var(--color-gray-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.btn--cta {
  position: relative;
  overflow: hidden;
}

.btn--cta::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
}

.btn--cta:hover::after {
  left: 100%;
}

/* ─── Card hover lift (smoother) ─── */
.service-card,
.program-tile,
.donate-card,
.info-card {
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.25s ease;
  will-change: transform;
}

/* ─── Soft section-to-section gradient transition ─── */
section + section {
  position: relative;
}

/* ─── 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;
  }

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .section-reveal,
  .stagger-children > *,
  .hero__heading,
  .hero__text,
  .hero__ctas {
    opacity: 1;
    transform: none;
  }

  .hero__bg--kenburns img,
  .hero__pattern {
    animation: none;
  }
}