/* ═══════════════════════════════════════════════════════════
   ANIMATIONS.CSS — Nameštaj Crni bor
   Keyframes, scroll reveal klase, parallax, shimmer.
   ═══════════════════════════════════════════════════════════ */

/* === KEYFRAMES — Bounce Down (Hero scroll indicator) === */
@keyframes bounceDown {

  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  40% {
    transform: translateX(-50%) translateY(8px);
  }

  60% {
    transform: translateX(-50%) translateY(4px);
  }
}

/* === KEYFRAMES — Scroll dot (Mouse icon) === */
@keyframes scrollDot {
  0% {
    opacity: 1;
    top: 6px;
  }

  100% {
    opacity: 0;
    top: 20px;
  }
}

/* === KEYFRAMES — Fade In === */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* === KEYFRAMES — Fade In Up === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(var(--reveal-distance));
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === KEYFRAMES — Shimmer (Skeleton loading) === */
@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

/* === KEYFRAMES — Pulse glow === */
@keyframes pulseGlow {

  0%,
  100% {
    box-shadow: var(--shadow-glow);
  }

  50% {
    box-shadow: var(--shadow-glow-strong);
  }
}

/* === KEYFRAMES — Gradient shift === */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

/* === KEYFRAMES — Scale in === */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}


/* ═══════════════════════════════════════
   SCROLL REVEAL — Intersection Observer klase
   JS dodaje .revealed klasu kad element uđe u viewport
   ═══════════════════════════════════════ */

/* Bazni reveal — sakriva element pre animacije */
.reveal {
  opacity: 0;
  transition: opacity var(--reveal-duration) var(--ease-out),
    transform var(--reveal-duration) var(--ease-out);
}

/* Revealed stanje — element je vidljiv */
.reveal.revealed {
  opacity: 1;
  transform: translate(0, 0) scale(1);
}

/* === Reveal varijante === */
.reveal--up {
  transform: translateY(var(--reveal-distance));
}

.reveal--down {
  transform: translateY(calc(var(--reveal-distance) * -1));
}

.reveal--left {
  transform: translateX(calc(var(--reveal-distance) * -1.3));
}

.reveal--right {
  transform: translateX(calc(var(--reveal-distance) * 1.3));
}

.reveal--scale {
  transform: scale(0.95);
}

/* === Stagger — Delay za elemente u grupi === */
.stagger-child:nth-child(1) {
  transition-delay: calc(var(--reveal-stagger) * 1);
}

.stagger-child:nth-child(2) {
  transition-delay: calc(var(--reveal-stagger) * 2);
}

.stagger-child:nth-child(3) {
  transition-delay: calc(var(--reveal-stagger) * 3);
}

.stagger-child:nth-child(4) {
  transition-delay: calc(var(--reveal-stagger) * 4);
}

.stagger-child:nth-child(5) {
  transition-delay: calc(var(--reveal-stagger) * 5);
}

.stagger-child:nth-child(6) {
  transition-delay: calc(var(--reveal-stagger) * 6);
}

.stagger-child:nth-child(7) {
  transition-delay: calc(var(--reveal-stagger) * 7);
}

.stagger-child:nth-child(8) {
  transition-delay: calc(var(--reveal-stagger) * 8);
}

.stagger-child:nth-child(9) {
  transition-delay: calc(var(--reveal-stagger) * 9);
}

.stagger-child:nth-child(10) {
  transition-delay: calc(var(--reveal-stagger) * 10);
}

.stagger-child:nth-child(11) {
  transition-delay: calc(var(--reveal-stagger) * 11);
}

.stagger-child:nth-child(12) {
  transition-delay: calc(var(--reveal-stagger) * 12);
}


/* ═══════════════════════════════════════
   PREFERS-REDUCED-MOTION — Pristupačnost
   Korisnici koji su isključili animacije dobijaju
   sadržaj odmah vidljiv, bez tranzicija.
   ═══════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {

  .reveal,
  .reveal--up,
  .reveal--down,
  .reveal--left,
  .reveal--right,
  .reveal--scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll,
  .hero__scroll-icon::after,
  .skeleton {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* ═══════════════════════════════════════
   BEZ JAVASCRIPT-A — Sadržaj mora ostati vidljiv
   Ako je JS isključen, .revealed se nikad ne dodaje,
   pa reveal elementi ne smeju ostati sakriveni.
   ═══════════════════════════════════════ */
@media (scripting: none) {

  .reveal,
  .reveal--up,
  .reveal--down,
  .reveal--left,
  .reveal--right,
  .reveal--scale {
    opacity: 1;
    transform: none;
    transition: none;
  }
}


/* ═══════════════════════════════════════
   SKELETON LOADING
   ═══════════════════════════════════════ */
.skeleton {
  background: linear-gradient(90deg,
      var(--color-bg-secondary) 25%,
      var(--color-bg-tertiary) 50%,
      var(--color-bg-secondary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

.skeleton--text {
  height: 1em;
  width: 80%;
  margin-bottom: var(--space-2);
}

.skeleton--title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-4);
}

.skeleton--image {
  aspect-ratio: 4 / 3;
  width: 100%;
}