/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #0a0a0f;
  color: #fff;
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }

/* ---------- Back link vers NB-Design ---------- */
.back-link {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  text-decoration: none;
  color: #fff;
  background: rgba(10, 10, 15, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  transition: background 0.25s, border-color 0.25s, transform 0.25s;
}
.back-link:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateX(-2px);
}
@media (max-width: 640px) {
  .back-link { top: 1rem; left: 1rem; padding: 0.4rem 0.75rem; font-size: 0.65rem; }
}

/* ---------- Hero parallax ---------- */
.hero-wrap {
  position: relative;
  height: 200vh;            /* 100vh visible + 100vh de scroll pour l'effet */
  background: #d8c8b8;      /* fallback durant le chargement */
}

.hero {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

.layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  will-change: transform;
}

.layer img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center bottom;
  user-select: none;
  -webkit-user-drag: none;
}

/* Couche 1 — fond avec ciel et paysage */
.layer-bg { z-index: 1; }
.layer-bg img { transform: scale(1.08); }   /* léger sur-cadrage pour le parallaxe */

/* Couche 2 — texte qui passe DERRIÈRE la montagne au scroll */
.layer-text {
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.hero-title {
  font-family: 'Anton', 'Impact', 'Oswald', sans-serif;
  font-weight: 400;                         /* Anton n'a qu'un poids */
  font-size: clamp(4.5rem, 17vw, 17rem);
  letter-spacing: 0.005em;
  color: #fff;
  text-transform: uppercase;
  line-height: 0.92;
  text-shadow: 0 10px 50px rgba(0, 0, 0, 0.3);
  white-space: nowrap;
  transform: translateY(-32vh);  /* position de départ : haut dans le ciel, au-dessus du sommet */
}

/* Couche 3 — montagne PNG en avant-plan (fixe : le texte glisse derrière) */
.layer-fg { z-index: 3; }
.layer-fg img { transform: scale(1.02); }

/* Méta texte en bas du hero (devant la montagne) */
.hero-meta {
  position: absolute;
  bottom: 6rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  pointer-events: none;
}

.hero-meta-line {
  display: block;
  width: 48px;
  height: 1px;
  background: rgba(255, 255, 255, 0.6);
}

.hero-meta p {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.92);
  margin: 0;
  white-space: nowrap;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

/* Indicateur de scroll */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-weight: 500;
  mix-blend-mode: difference;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.85);
  animation: scrollPulse 2s ease-in-out infinite;
  transform-origin: top;
}

@keyframes scrollPulse {
  0%, 100% { transform: scaleY(0.3); opacity: 0.4; }
  50%      { transform: scaleY(1);   opacity: 1;   }
}

/* ---------- Section contenu sous le hero ---------- */
.content {
  background: linear-gradient(180deg, #0a0a0f 0%, #1a1a24 100%);
  padding: 10rem 1.5rem 12rem;
  position: relative;
  z-index: 5;
}

.content-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 1.5rem;
}

.content h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.lede {
  font-size: 1.125rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.75);
  max-width: 560px;
  margin: 0 auto;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .hero-title    { font-size: clamp(3.5rem, 20vw, 7rem); }
  .hero-meta     { bottom: 5rem; }
  .hero-meta p   { font-size: 0.65rem; letter-spacing: 0.28em; }
  .content       { padding: 6rem 1.25rem 7rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .layer { transition: none !important; }
  .scroll-line { animation: none; }
}