/* ============================================
   VERAMI.STUDIO — animations.css
   Fade-in przy scrollu, hero animacje,
   hover efekty, scroll indicator
   ============================================ */

/* ================================================
   REVEAL — fade-in przy scrollu
   JS dodaje .is-visible przez IntersectionObserver
   ================================================ */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.75s var(--ease-out),
    transform 0.75s var(--ease-out);
}

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

/* Opoznienia — kaskadowe pojawienie sie */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.32s; }
.reveal-delay-4 { transition-delay: 0.45s; }
.reveal-delay-5 { transition-delay: 0.58s; }

/* Wariant poziomy (slide z lewej) */
.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
  transition:
    opacity 0.75s var(--ease-out),
    transform 0.75s var(--ease-out);
}

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

/* Wariant skalowania */
.reveal-scale {
  opacity: 0;
  transform: scale(0.97);
  transition:
    opacity 0.6s var(--ease-out),
    transform 0.6s var(--ease-out);
}

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

/* ================================================
   HERO — animacje wejscia (CSS, bez JS)
   ================================================ */

@keyframes hero-fade-up {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hero-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Kolejnosc animacji elementow hero */
.hero__label {
  animation: hero-fade-up 0.85s var(--ease-out) 0.15s both;
}

.hero__title {
  animation: hero-fade-up 0.9s var(--ease-out) 0.3s both;
}

.hero__subtitle {
  animation: hero-fade-up 0.9s var(--ease-out) 0.48s both;
}

.hero__actions {
  animation: hero-fade-up 0.9s var(--ease-out) 0.65s both;
}

.hero__scroll {
  animation: hero-fade-in 1s var(--ease-out) 1.1s both;
}

/* ================================================
   SCROLL INDICATOR — animowana linia
   ================================================ */

@keyframes scroll-line-drop {
  0% {
    transform: scaleY(0);
    transform-origin: top center;
    opacity: 1;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top center;
    opacity: 1;
  }
  51% {
    transform: scaleY(1);
    transform-origin: bottom center;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom center;
    opacity: 0.3;
  }
}

.hero__scroll-line {
  animation: scroll-line-drop 2.2s var(--ease-in-out) 1.5s infinite;
}

/* ================================================
   NAV — plynne wejscie po zaladowaniu
   ================================================ */

.nav {
  animation: hero-fade-in 0.6s var(--ease-out) 0.05s both;
}

/* ================================================
   OBRAZY — lazy load fade-in
   ================================================ */

/*
  Obrazy z loading="lazy" zaczynaja od opacity:0
  JS dodaje klase .is-loaded gdy sie zaladuja
  Efekt: plynne pojawienie sie bez skoku layoutu
*/

img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.55s var(--ease-out);
}

img[loading="lazy"].is-loaded {
  opacity: 1;
}

/* Hero bg — osobna wartosc (dluzszy czas) */
.hero__bg-img[loading="lazy"],
.hero__bg-img {
  opacity: 0;
  transition: opacity 1.3s var(--ease-out);
}

.hero__bg-img.is-loaded {
  opacity: 0.48;
}

/* ================================================
   HOVER — efekty premiumowe
   ================================================ */

/* Link z podkresleniem slide */
.hover-underline {
  position: relative;
}

.hover-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--dur-mid) var(--ease-out);
}

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

/* Obraz zoom */
.hover-zoom {
  overflow: hidden;
}

.hover-zoom img {
  transition: transform var(--dur-slow) var(--ease-out);
  will-change: transform;
}

.hover-zoom:hover img {
  transform: scale(1.05);
}

/* Karta z cieniem */
.hover-lift {
  transition:
    transform var(--dur-mid) var(--ease-out),
    box-shadow var(--dur-mid) var(--ease-out);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* ================================================
   PRZEJSCIA STRON (opcjonalne)
   Subtelne fade przy ladowaniu strony
   ================================================ */

@keyframes page-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

main {
  animation: page-in 0.5s var(--ease-out) 0.05s both;
}

/* ================================================
   LIGHTBOX — animacja wejscia
   ================================================ */

@keyframes lightbox-img-in {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.lightbox.is-open .lightbox__img {
  animation: lightbox-img-in 0.3s var(--ease-out) both;
}

/* ================================================
   PREFERS REDUCED MOTION
   Szanujemy preferencje uzytkownikow
   ================================================ */

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

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

  img[loading="lazy"] {
    opacity: 1;
    transition: none;
  }
}