/**
 * BCW Photography - Modern V2
 * Modernisation 2026 : transitions de pages, hero cinematique,
 * revelations au scroll, bande defilante de photos, lightbox v2.
 *
 * NB : toutes les animations sont neutralisees par la regle globale
 * prefers-reduced-motion de modern-effects.css ; les exceptions
 * specifiques (marquee, ken burns) sont reprises en fin de fichier.
 */

/* ========================================
   1. TRANSITIONS ENTRE PAGES (View Transitions API)
   Fondu doux entre les pages sur navigateurs modernes,
   ignore silencieusement ailleurs.
   ======================================== */

@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: vt-fade-out 0.25s ease both;
}

::view-transition-new(root) {
  animation: vt-fade-in 0.4s ease both;
}

@keyframes vt-fade-out {
  to { opacity: 0; }
}

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

/* ========================================
   2. SYSTEME DE REVELATION AU SCROLL
   L'etat cache n'est applique que si le JS est actif
   (html.js-anim), sinon tout reste visible.
   ======================================== */

html.js-anim .portfolio-item:not(.visible),
html.js-anim .section-title:not(.visible),
html.js-anim .contact-form:not(.visible),
html.js-anim .contact-info:not(.visible),
html.js-anim .about-content:not(.visible) {
  opacity: 0;
  transform: translateY(28px);
}

.portfolio-item,
.section-title,
.contact-form,
.contact-info,
.about-content {
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Le hover des cartes garde sa propre transition plus vive */
.portfolio-item.visible {
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.45s ease,
    border-color 0.45s ease;
}

/* ========================================
   3. HERO CINEMATIQUE
   ======================================== */

/* Couche image dediee avec effet Ken Burns (zoom lent) */
.hero {
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero/hero-bg.jpg');
  background-size: cover;
  background-position: center calc(50% + 40px);
  background-repeat: no-repeat;
  z-index: 0;
  animation: ken-burns 24s ease-in-out infinite alternate;
  will-change: transform;
}

@keyframes ken-burns {
  from { transform: scale(1) translateY(0); }
  to   { transform: scale(1.08) translateY(-1.5%); }
}

/* L'overlay sombre existant doit rester au-dessus de la couche image */
.hero::before {
  z-index: 1;
}

/* Entree du bouton CTA apres le titre et le paragraphe */
.hero-content .cta-button {
  opacity: 0;
  animation: fadeInUp 1s ease 0.6s forwards;
}

/* Indicateur de scroll en bas du hero */
.hero-scroll-indicator {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(243, 236, 231, 0.7);
  font-size: 1.3rem;
  text-decoration: none;
  opacity: 0;
  animation: fadeInUp 1s ease 1.2s forwards;
}

.hero-scroll-indicator i {
  display: block;
  animation: scroll-bounce 2s ease-in-out infinite 1.4s;
}

.hero-scroll-indicator:hover {
  color: var(--accent-color);
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50%      { transform: translateY(8px); opacity: 1; }
}

/* ========================================
   4. HEADER INTELLIGENT
   Compact apres scroll, se masque a la descente,
   reapparait a la remontee.
   ======================================== */

.navbar {
  will-change: transform;
}

.navbar.nav-hidden {
  transform: translateY(-105%);
}

.navbar.scrolled {
  padding-top: 0.4rem;
  padding-bottom: 0.4rem;
  background: rgba(18, 16, 16, 0.85);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

.navbar.scrolled .logo-img {
  max-height: 56px;
}

.logo-img {
  transition: max-height 0.35s ease;
}

/* ========================================
   5. BARRE DE PROGRESSION DE LECTURE
   ======================================== */

#scrollProgress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--accent-gradient);
  z-index: 1001;
  pointer-events: none;
}

/* ========================================
   6. BANDE DEFILANTE DE PHOTOS (marquee)
   ======================================== */

.photo-strip {
  position: relative;
  overflow: hidden;
  padding: 3.5rem 0;
  /* Fondu sur les bords pour une entree/sortie douce des photos */
  -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}

.strip-track {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: strip-scroll var(--strip-duration, 60s) linear infinite;
}

.photo-strip:hover .strip-track {
  animation-play-state: paused;
}

@keyframes strip-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.strip-item {
  position: relative;
  flex: 0 0 auto;
  height: 240px;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--glass-border);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.4s ease,
              border-color 0.4s ease;
}

.strip-item img {
  height: 100%;
  width: auto;
  display: block;
  object-fit: cover;
}

.strip-item:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 16px 40px rgba(168, 107, 85, 0.35);
  border-color: var(--accent-color);
  z-index: 2;
}

.strip-item .strip-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 18px 12px 10px;
  font-family: 'Lato', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: #fff;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.strip-item:hover .strip-label {
  opacity: 1;
}

.photo-strip .strip-title {
  text-align: center;
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(243, 236, 231, 0.55);
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .strip-item {
    height: 170px;
  }

  .photo-strip {
    padding: 2.2rem 0;
  }
}

/* ========================================
   7. LIGHTBOX V2 : navigation + compteur
   ======================================== */

.lb-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10002;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(243, 236, 231, 0.25);
  background: rgba(30, 26, 26, 0.55);
  backdrop-filter: blur(8px);
  color: var(--text-color);
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.3s ease, border-color 0.3s ease,
              transform 0.3s ease, opacity 0.3s ease;
  opacity: 0.85;
}

.lb-nav:hover {
  background: rgba(168, 107, 85, 0.85);
  border-color: var(--accent-color);
  opacity: 1;
  transform: translateY(-50%) scale(1.08);
}

.lb-nav:active {
  transform: translateY(-50%) scale(0.95);
}

.lb-prev { left: 22px; }
.lb-next { right: 22px; }

.lb-counter {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10002;
  font-family: 'Lato', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  color: rgba(243, 236, 231, 0.75);
  background: rgba(30, 26, 26, 0.55);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(243, 236, 231, 0.15);
  border-radius: 999px;
  padding: 6px 16px;
  user-select: none;
}

/* Crossfade lors du changement d'image */
.lightbox-image {
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.lightbox-image.lb-switching {
  opacity: 0;
  transform: scale(0.985);
}

@media (max-width: 768px) {
  .lb-nav {
    width: 42px;
    height: 42px;
    font-size: 1rem;
  }

  .lb-prev { left: 10px; }
  .lb-next { right: 10px; }

  .lb-counter {
    top: 14px;
    font-size: 0.8rem;
  }
}

/* ========================================
   8. FINITIONS GLOBALES
   ======================================== */

/* Defilement doux pour les ancres (natif, sans JS) */
html {
  scroll-behavior: smooth;
}

/* Scrollbar assortie au theme (WebKit + Firefox) */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--accent-color) var(--bg-color);
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent-color), var(--accent-hover));
  border-radius: 999px;
  border: 2px solid var(--bg-color);
}

/* Selection de texte aux couleurs du site */
::selection {
  background: rgba(168, 107, 85, 0.55);
  color: #fff;
}

/* Anneau de focus visible pour la navigation clavier */
:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Le bouton CTA respire au survol */
.cta-button {
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.35s ease;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(168, 107, 85, 0.4);
}

/* ========================================
   9. ACCESSIBILITE : mouvement reduit
   La regle globale de modern-effects.css neutralise deja les
   animations ; on fige explicitement les effets continus.
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  .hero-bg {
    animation: none;
  }

  .strip-track {
    animation: none;
    /* La bande reste consultable par defilement manuel */
    overflow-x: auto;
  }

  .photo-strip {
    -webkit-mask-image: none;
    mask-image: none;
    overflow-x: auto;
  }

  .hero-scroll-indicator i {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }

  html.js-anim .portfolio-item:not(.visible),
  html.js-anim .section-title:not(.visible),
  html.js-anim .contact-form:not(.visible),
  html.js-anim .contact-info:not(.visible),
  html.js-anim .about-content:not(.visible) {
    opacity: 1;
    transform: none;
  }
}