/* ============================================
   Animations - Scroll, Hover, Transitions
   ============================================ */

/* ---- Scroll Reveal Animation ---- */
.reveal {
  opacity: 0;
  transform: translateY(40px) scale(0.98);
  transition:
    opacity 700ms,
    transform 700ms;
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Staggered children animation */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 500ms,
    transform 500ms;
  transition-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(7) { transition-delay: 480ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(8) { transition-delay: 560ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(n+9) { transition-delay: 640ms; opacity: 1; transform: translateY(0); }

/* ---- Float Animation (Hero Illustration) ---- */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

.animate-float {
  animation: float 5s ease-in-out infinite;
}

/* ---- Pulse Animation ---- */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.85;
  }
}

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

/* ---- Subtle Rotate (Decorative elements) ---- */
@keyframes subtle-rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.animate-rotate {
  animation: subtle-rotate 60s linear infinite;
}

.animate-rotate-slow {
  animation: subtle-rotate 30s linear infinite;
  transform-origin: center;
}

/* ---- Fade In Up (Keyframes for JS control) ---- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- Card Hover Effects ---- */
.card,
.case-card,
.step-card,
.problem-card {
  will-change: transform;
  transition: all var(--transition-base) cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Magnetic hover effect for cards */
@media (hover: hover) {
  .card:hover,
  .case-card:hover,
  .benefit-card:hover {
    transform: translateY(-8px) scale(1.01);
  }
}

/* ---- Button Hover Icon Animation ---- */
.btn svg,
.btn__icon {
  transition: transform var(--transition-fast);
}

.btn:hover svg,
.btn:hover .btn__icon {
  transform: translateX(4px);
}

/* ---- Link Underline Animation ---- */
.link-animated {
  position: relative;
  display: inline-block;
}

.link-animated::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.link-animated:hover::after {
  width: 100%;
}

/* ---- Form Input Focus Animation ---- */
.form__input,
.form__textarea,
.form__select {
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  transform: translateY(-1px);
}

/* ---- Header Scroll Animation ---- */
.header {
  transition:
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

/* ---- Step Number Pulse on Hover ---- */
.step-card:hover .step-card__number {
  animation: pulse 1s ease-in-out;
}

/* ---- Icon Bounce on Card Hover ---- */
@keyframes icon-bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

.card:hover .card__icon,
.problem-card:hover .card__icon {
  animation: icon-bounce 0.4s ease-out;
}

/* ---- Loading Spinner ---- */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ---- Skeleton Loading ---- */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

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

/* ---- 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 {
    opacity: 1;
    transform: none;
  }

  .reveal-stagger > * {
    opacity: 1;
    transform: none;
  }
}