/* ================================================
   IMMA VARACALLI SERRAMENTI — Animations
   ================================================ */

/* === Keyframes === */

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scrollPulse {
  0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50%  { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

@keyframes shimmer {
  from { background-position: -200% 0; }
  to   { background-position: 200% 0; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes borderGrow {
  from { width: 0; }
  to   { width: 64px; }
}

@keyframes rotateIn {
  from { opacity: 0; transform: rotate(-10deg) scale(0.9); }
  to   { opacity: 1; transform: rotate(0deg) scale(1); }
}

/* === Scroll-Triggered: Base States === */

.anim-fade-up,
.anim-fade-in,
.anim-fade-left,
.anim-fade-right,
.anim-scale {
  opacity: 0;
  transition-property: opacity, transform;
  transition-duration: 700ms;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

.anim-fade-up     { transform: translateY(40px); }
.anim-fade-in     { transform: none; }
.anim-fade-left   { transform: translateX(-40px); }
.anim-fade-right  { transform: translateX(40px); }
.anim-scale       { transform: scale(0.93); }

/* === Scroll-Triggered: Visible State === */

.anim-fade-up.is-visible,
.anim-fade-in.is-visible,
.anim-fade-left.is-visible,
.anim-fade-right.is-visible,
.anim-scale.is-visible {
  opacity: 1;
  transform: none;
}

/* === Stagger Delays === */

.stagger-1 { transition-delay: 0ms; }
.stagger-2 { transition-delay: 80ms; }
.stagger-3 { transition-delay: 160ms; }
.stagger-4 { transition-delay: 240ms; }
.stagger-5 { transition-delay: 320ms; }
.stagger-6 { transition-delay: 400ms; }

/* === Divider Animation === */

.divider {
  width: 0;
  transition: width 800ms cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: 200ms;
}

.divider.is-visible {
  width: 64px;
}

/* === Process Step Animation === */

.process-step .process-step__circle {
  opacity: 0.4;
  transition: opacity 400ms ease, background 300ms ease, transform 300ms ease, box-shadow 300ms ease;
}

.process-step.is-active .process-step__circle {
  opacity: 1;
}

/* === Timeline Item Animation === */

.timeline-item {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.timeline-item.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* === Counting Numbers === */

.counter-value {
  display: inline-block;
  transition: opacity 300ms ease;
}

/* === Parallax === */

.parallax-img {
  will-change: transform;
}

/* === Hover Lift === */

.hover-lift {
  transition: transform var(--transition), box-shadow var(--transition);
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

/* === Image Zoom Container === */

.img-zoom {
  overflow: hidden;
}

.img-zoom img {
  transition: transform 700ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* === Underline Hover === */

.underline-hover {
  position: relative;
}

.underline-hover::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-secondary);
  transition: width var(--transition);
}

.underline-hover:hover::after {
  width: 100%;
}

/* === Loading Skeleton (for async content) === */

.skeleton {
  background: linear-gradient(90deg, #e0ddd5 25%, #f0ede8 50%, #e0ddd5 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* === Pulse ring (for active elements) === */

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

@keyframes pulseRing {
  0%, 100% { box-shadow: 0 0 0 0 rgba(200,169,110,0.4); }
  50%       { box-shadow: 0 0 0 12px rgba(200,169,110,0); }
}

/* === Page transition overlay === */

.page-transition {
  position: fixed;
  inset: 0;
  background: var(--color-primary);
  z-index: 9999;
  pointer-events: none;
  transform: translateY(100%);
}

/* === Reduced motion overrides === */

@media (prefers-reduced-motion: reduce) {
  .anim-fade-up,
  .anim-fade-in,
  .anim-fade-left,
  .anim-fade-right,
  .anim-scale {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .divider {
    width: 64px !important;
    transition: none !important;
  }

  .timeline-item {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .parallax-img {
    transform: none !important;
  }
}