/* ==========================================================================
   STORYTELLING — Chapitre 1 : Manifeste (hero cinématique)
   ========================================================================== */

.st1 {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: clip;
  color: #fff;
  isolation: isolate;
}

/* --- Fond (vidéo ou placeholder), parallaxe via JS ------------------ */
.st1__bg {
  position: absolute; inset: 0; z-index: -2;
  transform-origin: center;
  will-change: transform;
}
.st1__video { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Placeholder « palmeraie » premium tant qu'aucune vidéo n'est fournie */
.st1__placeholder {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(192,102,72,.26), transparent 55%),
    radial-gradient(120% 120% at 10% 110%, rgba(70,88,74,.40), transparent 55%),
    linear-gradient(160deg, #2A332B 0%, #1F261F 45%, #171C18 100%);
  overflow: hidden;
}
.st1__placeholder::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 26px 26px; opacity: .6;
}
.st1__palm {
  position: absolute; right: -2%; top: 4%;
  width: clamp(280px, 42vw, 620px); height: auto;
  color: var(--c-gold);
  will-change: transform;
}

/* --- Voile dégradé (lisibilité du texte) ---------------------------- */
.st1__veil {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(23,28,24,.45) 0%, transparent 28%),
    linear-gradient(0deg, rgba(23,28,24,.85) 0%, rgba(23,28,24,.25) 45%, transparent 70%);
}

/* --- Contenu -------------------------------------------------------- */
.st1__inner {
  position: relative;
  padding-bottom: clamp(4rem, 10vh, 9rem);
  padding-top: 10rem;
  max-width: 1100px;
  will-change: transform;
}
.st1__eyebrow { color: var(--c-gold); }
.st1__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 1.2rem + 5.2vw, 6rem);
  line-height: 1.04;
  letter-spacing: var(--ls-display);
  max-width: 18ch;
  text-wrap: balance;
  margin: .6rem 0 1.4rem;
}
/* masque pour la révélation mot à mot (SplitType lines) */
.st1__title .line { overflow: hidden; }
.st1__sub {
  font-size: var(--fs-lead);
  max-width: 46ch;
  color: rgba(255,255,255,.82);
}

/* --- Indicateur de scroll ------------------------------------------ */
.st1__scrollhint {
  position: absolute; left: 50%; bottom: clamp(1.25rem, 3vh, 2.5rem);
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .6rem;
  color: rgba(255,255,255,.85); text-decoration: none;
  font-size: var(--fs-caption); letter-spacing: var(--ls-caption); text-transform: uppercase;
}
.st1__scrollhint-line {
  position: relative; width: 1px; height: 56px;
  background: rgba(255,255,255,.25); overflow: hidden;
}
.st1__scrollhint-line span {
  position: absolute; top: -60%; left: 0; width: 100%; height: 60%;
  background: var(--c-gold);
  animation: st1Scroll 2s var(--ease-inout) infinite;
}
@keyframes st1Scroll {
  0% { transform: translateY(0); } 100% { transform: translateY(280%); }
}

.st-anchor { display: block; height: 0; }
.st-next { background: var(--c-bg); }

/* ==========================================================================
   Header transparent SUR un hero sombre : logo + nav en blanc au sommet.
   Body class « odp-immersive » ajoutée pour les pages storytelling.
   ========================================================================== */
/* Au sommet d'un hero sombre : header transparent, sans filet, tout en blanc. */
.odp-immersive .site-header:not(.is-scrolled) {
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.odp-immersive .site-header:not(.is-scrolled)::after { opacity: 0; }
.odp-immersive .site-header:not(.is-scrolled) .brand__logo {
  filter: brightness(0) invert(1);
}
.odp-immersive .site-header:not(.is-scrolled) .nav-primary a,
.odp-immersive .site-header:not(.is-scrolled) .nav-toggle { color: #fff; }
.odp-immersive .site-header:not(.is-scrolled) .nav-primary a:hover,
.odp-immersive .site-header:not(.is-scrolled) .nav-primary a[aria-current],
.odp-immersive .site-header:not(.is-scrolled) .nav-toggle:hover { background: rgba(255,255,255,.16); }

/* ==========================================================================
   Chapitre 2 — Naissance (timeline horizontale épinglée)
   ========================================================================== */
.st2 { background: var(--c-bg); padding-block: var(--section-y) 0; overflow: hidden; }
.st2__head { text-align: center; max-width: 720px; margin: 0 auto 2.5rem; }
.st2__title { margin-top: .4rem; }
.st2__intro { color: var(--c-ink-soft); margin-top: .5rem; font-size: var(--fs-lead); }

.st2__viewport { position: relative; overflow: hidden; padding-bottom: var(--sp-xl); }
.st2__track { display: flex; gap: var(--sp-lg); width: max-content; padding-inline: var(--gutter); will-change: transform; }
.st2__step {
  flex: 0 0 min(72vw, 500px);
  display: flex; flex-direction: column; gap: .5rem;
  min-height: 340px;
  padding: var(--sp-lg);
  background: var(--c-white); border: 1px solid var(--c-line);
  border-radius: var(--r-lg); box-shadow: var(--sh-sm);
}
.st2__num { font-family: var(--font-display); font-size: var(--fs-display); line-height: .9; color: var(--c-sand); }
.st2__phase { font-size: var(--fs-caption); letter-spacing: var(--ls-caption); text-transform: uppercase; color: var(--c-gold-dark); }
.st2__step-title { font-family: var(--font-display); font-size: var(--fs-h3); margin-top: auto; }
.st2__step-text { color: var(--c-ink-soft); }
.st2__progress { position: absolute; left: var(--gutter); right: var(--gutter); bottom: var(--sp-lg); height: 2px; background: var(--c-gold); transform: scaleX(0); transform-origin: left; }

/* Mobile / mouvement réduit : empilement vertical (pas de pin) */
@media (max-width: 759px), (prefers-reduced-motion: reduce) {
  .st2__track { flex-direction: column; width: auto; transform: none !important; }
  .st2__step { flex: 1 1 auto; min-height: 0; }
  .st2__progress { display: none; }
}

/* ==========================================================================
   Chapitre 3 — Nature (couches en parallaxe)
   ========================================================================== */
.st3 { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; isolation: isolate; }
.st3__scene { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.st3__layer { position: absolute; left: -5%; right: -5%; will-change: transform; }
.st3__layer--sky { inset: -10% -5%; background: linear-gradient(180deg, #cfe1e6 0%, #e8f0ea 55%, #f3efe6 100%); }
.st3__layer--sun { top: 8%; right: 12%; left: auto; width: clamp(120px, 18vw, 240px); aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(192,102,72,.55), rgba(192,102,72,0) 70%); }
.st3__layer--far, .st3__layer--mid, .st3__layer--fore { bottom: -8%; height: 46%; }
.st3__layer svg { width: 100%; height: 100%; display: block; }

.st3__content { position: relative; z-index: 1; max-width: 720px; }
.st3__eyebrow { color: var(--c-gold-dark); }
.st3__title { font-family: var(--font-display); font-size: clamp(2.2rem, 1.2rem + 4vw, 4.5rem); line-height: 1.05; margin: .5rem 0 1.2rem; max-width: 16ch; }
.st3__lead { font-size: var(--fs-lead); color: var(--c-ink-soft); max-width: 48ch; }
.st3__points { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.5rem; }
.st3__points li {
  list-style: none; padding: .5rem 1rem; border-radius: var(--r-pill);
  background: rgba(255,255,255,.6); border: 1px solid var(--c-line);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  font-size: var(--fs-small); color: var(--c-ink);
}

/* --- Accessibilité : mouvement réduit ------------------------------ */
@media (prefers-reduced-motion: reduce) {
  .st1__scrollhint-line span { animation: none; }
  .st1__bg, .st1__palm, .st1__inner { will-change: auto; }
  .st2__track, .st3__layer { will-change: auto; }
}