/* ============================================================
   BYDURAN.CO — Scroll Reveal Animations
   Pure Intersection Observer — no libraries
   ============================================================ */

/* ── Initial hidden state ─────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity var(--dur-reveal) var(--ease-luxury),
    transform var(--dur-reveal) var(--ease-luxury);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

.reveal--left {
  transform: translateX(-40px);
}

.reveal--right {
  transform: translateX(40px);
}

.reveal--scale {
  transform: scale(0.95) translateY(20px);
}

.reveal--text {
  opacity: 0;
  transform: translateY(20px);
}

/* ── Revealed (JS adds this class) ───────────────────────── */
.reveal.is-revealed {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* ── Hero text — pre-animated on load ───────────────────── */
.reveal-text {
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.9s var(--ease-luxury) 0.4s forwards;
}

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

/* ── Nav fade in — only on home page (no nav--scrolled at load) ── */
/* Inner pages have nav--scrolled in the HTML, so this never fires there */
.nav:not(.nav--scrolled) {
  animation: navFadeIn 0.7s var(--ease-luxury) 0.2s both;
}

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

/* ── Hero slide transitions ───────────────────────────────── */
.hero__slide {
  opacity: 0;
  transition: opacity 0.9s var(--ease-luxury);
  pointer-events: none;
}

.hero__slide--active {
  opacity: 1;
  pointer-events: auto;
}

.hero__title {
  opacity: 0;
  transform: translateY(24px);
  animation: none;
}

.hero__slide--active .hero__title {
  animation: heroTitleIn 1s var(--ease-luxury) 0.3s forwards;
}

.hero__slide--active .hero__sub {
  animation: heroTitleIn 1s var(--ease-luxury) 0.5s forwards;
  opacity: 0;
}

.hero__slide--active .hero__cta {
  animation: heroTitleIn 1s var(--ease-luxury) 0.7s forwards;
  opacity: 0;
}

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

/* ── Ken Burns on hero images ─────────────────────────────── */
.hero__slide--active .hero__img {
  animation: kenBurns 8s var(--ease-luxury) forwards;
}

@keyframes kenBurns {
  from { transform: scale(1.06); }
  to   { transform: scale(1); }
}

/* ── Image hover zoom ─────────────────────────────────────── */
.novaelle__img-wrap,
.category-card__media {
  overflow: hidden;
}

.novaelle__img-wrap img,
.category-card__media img {
  transition: transform 0.8s var(--ease-luxury);
  will-change: transform;
}

.novaelle__cell:hover .novaelle__img-wrap img,
.category-card:hover .category-card__media img {
  transform: scale(1.04);
}

/* ── Hover overlay reveal ─────────────────────────────────── */
.novaelle__hover-overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--dur-mid) var(--ease-luxury);
}

.novaelle__hover-overlay span {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--cream);
  transform: translateY(8px);
  transition: transform var(--dur-mid) var(--ease-luxury);
}

.novaelle__cell:hover .novaelle__hover-overlay {
  opacity: 1;
}

.novaelle__cell:hover .novaelle__hover-overlay span {
  transform: translateY(0);
}

/* ── Scroll hint animation ────────────────────────────────── */
.hero__scroll-line {
  animation: scrollPulse 2.2s var(--ease-luxury) infinite;
}

@keyframes scrollPulse {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* Scroll-to-top line — travels upward (reverse of scrollPulse) */
@keyframes scrollPulseUp {
  0%   { transform: scaleY(0); transform-origin: bottom; }
  50%  { transform: scaleY(1); transform-origin: bottom; }
  51%  { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0); transform-origin: top; }
}

/* ── Corner pulse animations (about closing + load more btn) ─ */
@keyframes cornerPulseDown {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
@keyframes cornerPulseUp {
  0%   { transform: scaleY(0); transform-origin: bottom; }
  50%  { transform: scaleY(1); transform-origin: bottom; }
  51%  { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0); transform-origin: top; }
}
@keyframes cornerPulseRight {
  0%   { transform: scaleX(0); transform-origin: left; }
  50%  { transform: scaleX(1); transform-origin: left; }
  51%  { transform: scaleX(1); transform-origin: right; }
  100% { transform: scaleX(0); transform-origin: right; }
}
@keyframes cornerPulseLeft {
  0%   { transform: scaleX(0); transform-origin: right; }
  50%  { transform: scaleX(1); transform-origin: right; }
  51%  { transform: scaleX(1); transform-origin: left; }
  100% { transform: scaleX(0); transform-origin: left; }
}

/* ── Form error fade-in ───────────────────────────────────── */
@keyframes errorFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Testimonial stagger ──────────────────────────────────── */
.testimonial {
  --reveal-delay: 0ms;
}

/* ── Reduced motion overrides ─────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .hero__scroll-line,
  .scroll-top__line {
    animation: none;
  }
  .post-hero__media img {
    animation: none;
  }
  .reveal-text {
    animation: none;
    opacity: 1;
    transform: none;
  }
  .hero__slide--active .hero__title,
  .hero__slide--active .hero__sub,
  .hero__slide--active .hero__cta {
    animation: none;
    opacity: 1;
    transform: none;
  }
  .hero__slide--active .hero__img {
    animation: none;
  }
  .nav {
    animation: none;
  }
}

/* ── Service item line reveal ─────────────────────────────── */
/* position: relative lives in home.css to avoid split ownership */

.service-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-border);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-luxury);
}

.service-item.is-revealed::before {
  transform: scaleX(1);
}