/* =========================================================
   Voyage en Chine — Variante 2 : SVG + CSS 3D / Encre & Sumi-e
   ========================================================= */

:root {
  --encre:        #1a1a1a;
  --encre-doux:   #2b2b2b;
  --encre-gris:   #54504a;
  --gris-clair:   #8a847a;
  --papier:       #f4f1ea;
  --papier-fonce: #efe9dd;
  --papier-ombre: #e6dfd0;
  --vermillon:    #c0392b;
  --cinabre:      #b3122b;
  --or:           #b08d4f;

  --font-titre: "Cormorant Garamond", Georgia, serif;
  --font-corps: "Manrope", system-ui, sans-serif;
  --font-cn:    "Ma Shan Zheng", "Cormorant Garamond", serif;

  --max: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-corps);
  color: var(--encre);
  background: var(--papier);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* --- Texture papier de riz fixée en fond --- */
.paper-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1100px 680px at 50% -8%, #fbf9f4 0%, var(--papier) 42%, var(--papier-fonce) 78%, var(--papier-ombre) 100%);
}
/* Grain de papier subtil (encre déposée sur fibres) */
.paper-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(26,26,26,0.5) 0.5px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(26,26,26,0.4) 0.5px, transparent 1px),
    radial-gradient(circle at 45% 85%, rgba(26,26,26,0.4) 0.5px, transparent 1px);
  background-size: 7px 7px, 11px 11px, 9px 9px;
}

/* =========================================================
   Scène de la fleur (SVG fixé en plein écran)
   ========================================================= */
.flower-stage {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  will-change: opacity;
}
/* Conteneur en perspective : c'est lui qui donne la profondeur 3D. */
.flower-perspective {
  perspective: 900px;
  perspective-origin: 50% 50%;
  width: min(74vmin, 620px);
  height: min(74vmin, 620px);
  transform: translateZ(0);
}
.flower-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
  transform-style: preserve-3d;
  will-change: transform, opacity;
}

/* --- Apparence à l'encre des pétales --- */
.petale-remplissage {
  fill: url(#lavis-petale);
  opacity: 0.82;
}
.petale-contour {
  fill: none;
  stroke: var(--encre);
  stroke-width: 3.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.92;
}
.petale-nervure {
  fill: none;
  stroke: var(--encre-doux);
  stroke-width: 1.8;
  stroke-linecap: round;
  opacity: 0.5;
}
.petale-nervure--fine { stroke-width: 1.1; opacity: 0.34; }

/* Chaque pétale tourne autour de sa base : pivot 3D bas-centre. */
.petale {
  transform-box: fill-box;
  transform-origin: 50% 100%;
  will-change: transform;
  backface-visibility: hidden;
}

/* --- Cœur (pistil + étamines) --- */
.etamine-filament { stroke: var(--or); stroke-width: 2.2; stroke-linecap: round; fill: none; opacity: 0.85; }
.etamine-anthere  { fill: var(--or); opacity: 0.9; }
.pistil           { fill: var(--cinabre); opacity: 0.9; }
.flower-core { will-change: opacity, transform; }

main { position: relative; z-index: 2; }

.container { width: min(var(--max), 90vw); margin-inline: auto; }

/* =========================================================
   Navigation
   ========================================================= */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem clamp(1.2rem, 4vw, 3rem);
  transition: background .4s var(--ease), backdrop-filter .4s var(--ease), box-shadow .4s var(--ease);
}
.nav.is-scrolled {
  background: rgba(244, 241, 234, 0.82);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(26, 26, 26, 0.12);
}
.nav__brand { display: flex; align-items: baseline; gap: .6rem; text-decoration: none; color: var(--encre); }
.nav__cn { font-family: var(--font-cn); font-size: 1.5rem; color: var(--cinabre); line-height: 1; }
.nav__fr { font-family: var(--font-titre); font-size: 1.25rem; letter-spacing: .02em; }
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2.2rem); }
.nav__links a { text-decoration: none; color: var(--encre-gris); font-size: .92rem; letter-spacing: .04em; transition: color .3s; }
.nav__links a:hover { color: var(--cinabre); }
.nav__cta {
  border: 1px solid var(--vermillon);
  padding: .5rem 1.2rem;
  border-radius: 999px;
  color: var(--cinabre) !important;
}
.nav__cta:hover { background: var(--vermillon); color: var(--papier) !important; }

/* =========================================================
   Section 1 — Hero / fleur
   ========================================================= */
.hero-scroll { height: 280vh; position: relative; z-index: 2; }

.hero-content {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 1.5rem;
  gap: 1.1rem;
  will-change: opacity, transform;
}
.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: .42em;
  font-size: .72rem;
  color: var(--cinabre);
  font-weight: 500;
}
.hero__title { display: flex; flex-direction: column; align-items: center; gap: .1rem; }
.hero__cn { font-family: var(--font-cn); font-size: clamp(2.6rem, 7vw, 4.4rem); color: var(--cinabre); line-height: 1; opacity: .92; }
.hero__main {
  font-family: var(--font-titre);
  font-weight: 500;
  font-size: clamp(2.8rem, 9vw, 6rem);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--encre);
}
.hero__subtitle {
  font-family: var(--font-titre);
  font-style: italic;
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  color: var(--encre-gris);
  max-width: 34ch;
}
.scroll-hint {
  margin-top: 1.6rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--encre-gris);
}
.scroll-hint__arrow { font-size: 1.2rem; animation: bob 1.8s var(--ease) infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); opacity: .6; } 50% { transform: translateY(8px); opacity: 1; } }

/* =========================================================
   Sections de contenu
   ========================================================= */
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .3em;
  font-size: .74rem;
  font-weight: 600;
  color: var(--cinabre);
  margin-bottom: .8rem;
}
.section-title {
  font-family: var(--font-titre);
  font-weight: 500;
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: .01em;
  margin-bottom: 1.2rem;
}
.lead { font-size: clamp(1.02rem, 1.8vw, 1.22rem); color: var(--encre-gris); max-width: 60ch; }
.lead--center { margin-inline: auto; text-align: center; }

/* --- Section 2 : arrivée --- */
.arrivee {
  position: relative;
  background: linear-gradient(180deg, rgba(244,241,234,0) 0%, var(--papier) 16%, var(--papier-fonce) 100%);
  padding: clamp(6rem, 14vh, 11rem) 0 clamp(5rem, 12vh, 9rem);
  overflow: hidden;
  box-shadow: 0 -30px 60px rgba(26, 26, 26, 0.06);
}
.arrivee__inner { text-align: center; }
.plane { position: absolute; top: 12%; left: -140px; color: var(--encre-doux); opacity: .8; will-change: transform; }
.stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(1.5rem, 6vw, 4.5rem);
  margin-top: 2.8rem;
}
.stat { display: flex; flex-direction: column; gap: .2rem; }
.stat__num { font-family: var(--font-titre); font-size: clamp(1.8rem, 4vw, 2.8rem); color: var(--cinabre); }
.stat__label { font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; color: var(--encre-gris); }

/* --- Section 3 : incontournables --- */
.incontournables { background: var(--papier-fonce); padding: clamp(5rem, 11vh, 8rem) 0; text-align: center; }
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.6rem;
  margin-top: 3rem;
  text-align: left;
}
.card {
  background: var(--papier);
  border: 1px solid rgba(26, 26, 26, 0.12);
  border-radius: 4px;
  overflow: hidden;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.card:hover { transform: translateY(-8px); box-shadow: 0 24px 50px rgba(26, 26, 26, 0.16); }
.card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--papier-ombre), #ddd4c2 60%, #cfc6b2);
  overflow: hidden;
}
.card__media img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(0.12) contrast(1.03); transition: transform .6s var(--ease), filter .6s var(--ease); }
.card:hover .card__media img { transform: scale(1.06); filter: grayscale(0) contrast(1.06); }
.card h3 { font-family: var(--font-titre); font-weight: 600; font-size: 1.5rem; margin: 1.1rem 1.3rem .4rem; }
.card p { margin: 0 1.3rem 1.4rem; color: var(--encre-gris); font-size: .98rem; }

/* --- Section 4 : galerie --- */
.galerie { background: linear-gradient(180deg, var(--papier-fonce), var(--papier)); padding: clamp(5rem, 11vh, 8rem) 0; text-align: center; }
.gallery-grid {
  width: min(var(--max), 92vw);
  margin: 3rem auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 1rem;
}
.gallery-item {
  position: relative;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--papier-ombre), #d2c9b6);
  overflow: hidden;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(0.12) contrast(1.03); transition: transform .6s var(--ease), filter .6s var(--ease); }
.gallery-item:hover img { transform: scale(1.05); filter: grayscale(0) contrast(1.06); }
.gallery-item--tall { grid-row: span 2; }
.gallery-item--wide { grid-column: span 2; }

/* --- Section 5 : CTA --- */
.cta {
  background: linear-gradient(135deg, var(--encre) 0%, var(--encre-doux) 58%, #3a3631 100%);
  color: var(--papier);
  text-align: center;
  padding: clamp(5rem, 13vh, 9rem) 0;
}
.cta__title { font-family: var(--font-titre); font-weight: 500; font-size: clamp(2.2rem, 5vw, 3.6rem); }
.cta__text { color: rgba(244, 241, 234, .82); margin: 1rem auto 2.2rem; max-width: 46ch; }
.cta__actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: .9rem 2rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: .95rem;
  letter-spacing: .04em;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s;
}
.btn--primary { background: var(--vermillon); color: #fff; box-shadow: 0 12px 30px rgba(192, 57, 43, .35); }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(192, 57, 43, .45); }
.btn--ghost { border: 1px solid rgba(244, 241, 234, .55); color: var(--papier); }
.btn--ghost:hover { background: rgba(244, 241, 234, .12); }

/* --- Footer --- */
.footer { background: var(--encre); color: var(--papier-fonce); padding: 3.5rem 0; text-align: center; }
.footer__brand { font-family: var(--font-cn); font-size: 1.6rem; color: var(--vermillon); margin-bottom: .8rem; }
.footer__note { max-width: 52ch; margin: 0 auto .8rem; color: #c8c2b6; font-size: .92rem; }
.footer__legal { font-size: .8rem; color: #908a7e; }

/* =========================================================
   Animations d'apparition (GSAP gère, fallback ci-dessous)
   ========================================================= */
.reveal { opacity: 0; transform: translateY(34px); }
.reveal.is-in { opacity: 1; transform: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 760px) {
  .nav__links a:not(.nav__cta) { display: none; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-item--wide { grid-column: span 2; }
  .hero-scroll { height: 240vh; }
  .flower-perspective { width: min(86vmin, 460px); height: min(86vmin, 460px); }
}

/* =========================================================
   Accessibilité — mouvement réduit
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scroll-hint__arrow { animation: none; }
  .reveal { opacity: 1; transform: none; }
}