/* =========================================================
   SCENITECH — Feuille de style
   Hero sombre cinématographique + reste du site clair
   Palette : blanc cassé, noir, jaune (logo)
   ========================================================= */

:root{
  /* Couleurs claires (corps du site) */
  --blanc:#f6f4ef;
  --blanc-pur:#ffffff;
  --creme:#efece4;
  --noir:#0e0e0d;
  --noir-doux:#1a1a18;
  --jaune:#F2C200;
  --jaune-fonce:#d9ae00;
  --gris:#6b6862;
  --gris-clair:#9a968e;
  --ligne:#e0dcd2;

  /* Hero sombre */
  --hero-noir:#0a0a0a;

  --font:'Sora',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --max:1180px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--blanc);
  color:var(--noir);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
mark{background:none;color:var(--jaune-fonce);font-weight:inherit}

/* ============ NAV ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 48px;
  transition:background .4s ease,padding .4s ease,box-shadow .4s ease;
}
/* Au-dessus du hero sombre : logo clair, liens clairs */
.nav__logo{height:34px;width:auto;transition:filter .4s ease}
.nav__links{display:flex;gap:38px;align-items:center}
.nav__links a{
  font-size:14px;font-weight:400;letter-spacing:.01em;color:#fff;
  position:relative;padding:4px 0;transition:color .25s;
}
.nav__links a::after{
  content:'';position:absolute;left:0;bottom:-2px;width:0;height:1.5px;
  background:var(--jaune);transition:width .3s ease;
}
.nav__links a:hover{color:var(--jaune)}
.nav__links a:hover::after{width:100%}

/* Après scroll : fond clair, texte noir */
.nav.scrolled{
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(14px);
  padding:14px 48px;
  box-shadow:0 1px 0 var(--ligne);
}
.nav.scrolled .nav__links a{color:var(--noir)}
.nav.scrolled .nav__links a:hover{color:var(--jaune-fonce)}
.nav.scrolled .nav__logo{filter:none}

.nav__burger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:0;padding:4px}
.nav__burger span{width:26px;height:2px;background:#fff;transition:.3s}
.nav.scrolled .nav__burger span{background:var(--noir)}

/* ============ HERO (sombre) ============ */
.hero{
  position:relative;min-height:100vh;
  display:flex;align-items:center;justify-content:center;text-align:center;
  overflow:hidden;background:var(--hero-noir);
}
.hero__bg{
  position:absolute;inset:0;
  background:url('../images/hero.jpg') center/cover no-repeat;
  transform:scale(1.08);
  animation:heroDrift 26s ease-in-out infinite alternate;
}
@keyframes heroDrift{
  from{transform:scale(1.08) translate(0,0)}
  to{transform:scale(1.16) translate(-2%,-1.5%)}
}
.hero__veil{
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse 70% 55% at 50% 46%,rgba(10,10,10,.30),rgba(10,10,10,.72) 70%,rgba(10,10,10,.93)),
    linear-gradient(180deg,rgba(10,10,10,.72),rgba(10,10,10,.5) 30%,rgba(10,10,10,.88));
}
.hero__grain{
  position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hero__inner{position:relative;z-index:3;padding:0 24px;transform:translateY(-3%)}
.hero__logo-wrap{position:relative;display:inline-block}
.hero__logo{
  width:min(560px,82vw);height:auto;position:relative;z-index:2;
  animation:logoIn 1.6s cubic-bezier(.16,1,.3,1) both;
}
@keyframes logoIn{
  0%{opacity:0;transform:translateY(18px) scale(.97)}
  100%{opacity:1;transform:translateY(0) scale(1)}
}
.hero__halo{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:120%;height:220%;z-index:1;pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(242,194,0,.22),rgba(242,194,0,.06) 45%,transparent 70%);
  filter:blur(14px);
  animation:haloPulse 4.5s ease-in-out infinite;
}
@keyframes haloPulse{
  0%,100%{opacity:.55;transform:translate(-50%,-50%) scale(1)}
  50%{opacity:1;transform:translate(-50%,-50%) scale(1.06)}
}
.hero__sweep{position:absolute;inset:0;z-index:3;pointer-events:none;overflow:hidden}
.hero__sweep::before{
  content:'';position:absolute;top:-20%;left:-60%;width:40%;height:140%;
  background:linear-gradient(105deg,transparent,rgba(255,240,190,.55),transparent);
  filter:blur(6px);transform:skewX(-18deg);
  animation:sweep 6s ease-in-out infinite;
}
@keyframes sweep{
  0%{left:-60%}
  55%{left:130%}
  100%{left:130%}
}
.hero__tag{
  margin-top:26px;font-size:clamp(15px,1.4vw,18px);font-weight:300;
  letter-spacing:.42em;text-transform:uppercase;color:var(--gris-clair);
  padding-left:.42em;opacity:0;animation:fadeUp 1s ease 1s forwards;
}
.hero__scroll{
  position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  opacity:0;animation:fadeUp 1s ease 1.6s forwards;
}
.hero__scroll span:first-child{font-size:11px;letter-spacing:.25em;color:var(--gris-clair);text-transform:uppercase}
.hero__scroll-line{width:1px;height:38px;background:linear-gradient(var(--jaune),transparent);animation:scrollLine 2s ease-in-out infinite}
@keyframes scrollLine{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

/* ============ INTRO (mot de présentation) ============ */
.intro{
  max-width:940px;margin:0 auto;padding:130px 32px 100px;text-align:center;
}
.intro__quote{
  font-size:clamp(24px,3.2vw,38px);font-weight:300;line-height:1.5;letter-spacing:-.01em;
}
.intro__quote mark{font-weight:600}
.intro__sign{
  margin-top:34px;font-size:14px;letter-spacing:.08em;color:var(--gris-clair);
  text-transform:uppercase;
}

/* ============ ABOUT ============ */
.about{max-width:var(--max);margin:0 auto;padding:40px 48px 100px}
.about__grid{display:grid;grid-template-columns:1.05fr 1fr;gap:80px;align-items:center}
.about__title{
  font-size:clamp(30px,4vw,50px);font-weight:700;line-height:1.1;
  letter-spacing:-.02em;margin-bottom:28px;
}
.about__text{font-size:16px;color:var(--gris);margin-bottom:18px;line-height:1.75}
.about__text:last-child{margin-bottom:0}

/* Stats : aplats, pas de cartes arrondies. Séparateurs nets. */
.stats{display:grid;grid-template-columns:1fr 1fr;border-top:2px solid var(--noir);border-left:2px solid var(--noir)}
.stat{padding:30px 26px;border-right:2px solid var(--noir);border-bottom:2px solid var(--noir)}
.stat__num{display:block;font-size:clamp(28px,3.4vw,40px);font-weight:800;color:var(--noir);line-height:1;letter-spacing:-.02em}
.stat:nth-child(1) .stat__num,.stat:nth-child(4) .stat__num{color:var(--jaune-fonce)}
.stat__label{display:block;margin-top:12px;font-size:13.5px;color:var(--gris);line-height:1.45}

/* ============ SERVICES (façon Orris : grande image / texte) ============ */
.services{padding:20px 0 40px}
.services__head{max-width:var(--max);margin:0 auto 20px;padding:0 48px}
.services__title{font-size:clamp(30px,4vw,50px);font-weight:700;letter-spacing:-.02em;line-height:1.1}
.services__sub{margin-top:16px;font-size:16px;color:var(--gris);max-width:560px}

.svc{
  max-width:var(--max);margin:0 auto;padding:70px 48px;
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
}
.svc:nth-child(even) .svc__media{order:2}
.svc:nth-child(even) .svc__body{order:1}
.svc__media{position:relative;overflow:hidden;aspect-ratio:4/3;background:var(--creme)}
.svc__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.svc__img--bw{z-index:1;transition:opacity .7s ease}
.svc__img--color{z-index:2;opacity:0;transition:opacity .7s ease;transform:scale(1.05);animation:svcPan 20s ease-in-out infinite alternate}
.svc:hover .svc__img--color{opacity:1}
@keyframes svcPan{from{transform:scale(1.05) translateX(0)}to{transform:scale(1.12) translateX(-3%)}}
.svc__idx{display:block;font-size:14px;color:var(--jaune-fonce);font-weight:600;margin-bottom:18px}
.svc__title{font-size:clamp(24px,2.6vw,34px);font-weight:600;letter-spacing:-.01em;margin-bottom:16px}
.svc__text{font-size:15.5px;color:var(--gris);line-height:1.75;margin-bottom:26px}
.svc__link{
  font-size:14.5px;font-weight:600;color:var(--noir);display:inline-block;
  padding-bottom:5px;border-bottom:2px solid var(--jaune);transition:color .25s,border-color .25s;
}
.svc__link:hover{color:var(--jaune-fonce);border-color:var(--jaune-fonce)}

/* ============ GALERIE PORTFOLIO (deux vitesses) ============ */
.gallery{background:var(--noir);color:var(--blanc);padding:110px 0 120px;overflow:hidden}
.gallery__head{max-width:var(--max);margin:0 auto 60px;padding:0 48px}
.gallery__title{font-size:clamp(30px,4vw,50px);font-weight:700;letter-spacing:-.02em;line-height:1.1;color:#fff}
.gallery__title mark{color:var(--jaune)}
.gallery__sub{margin-top:16px;font-size:16px;color:var(--gris-clair);max-width:560px}
.gallery__grid{
  max-width:var(--max);margin:0 auto;padding:0 48px;
  display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;
}
.gallery__col{display:flex;flex-direction:column;gap:28px;will-change:transform}
.gallery__col--offset{margin-top:70px}
.shot{position:relative;overflow:hidden;background:#161616}
.shot img{
  width:100%;height:100%;object-fit:cover;display:block;
  filter:grayscale(1) brightness(.5) contrast(1.05);
  transform:scale(1.02);
  transition:filter .8s ease,transform .8s ease;
  will-change:filter,transform;
}
/* état "éclairé" (ajouté au scroll par JS) */
.shot.lit img{filter:grayscale(0) brightness(1) contrast(1)}
/* survol : pousse encore la lumière */
.shot:hover img{filter:grayscale(0) brightness(1.05) contrast(1.02);transform:scale(1.06)}

/* ============ PARTENAIRES ============ */
.partners{padding:80px 0;background:var(--blanc);overflow:hidden}
.partners__label{text-align:center;font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--gris-clair);margin-bottom:44px}
.marquee{width:100%;overflow:hidden}
.marquee__track{display:flex;width:max-content;animation:marquee 36s linear infinite}
.marquee:hover .marquee__track{animation-play-state:paused}
.marquee__item{
  display:flex;align-items:center;gap:0;white-space:nowrap;
  padding:0 40px;font-size:22px;font-weight:600;color:var(--gris-clair);letter-spacing:.01em;
  transition:color .3s;
}
.marquee__item::after{content:'';display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--jaune);margin-left:40px;opacity:.6}
.marquee__item:hover{color:var(--noir)}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ============ CONTACT ============ */
.contact{max-width:var(--max);margin:0 auto;padding:120px 48px;text-align:center}
.contact__title{font-size:clamp(32px,4.6vw,58px);font-weight:700;letter-spacing:-.02em;line-height:1.08;margin-bottom:22px}
.contact__sub{font-size:17px;color:var(--gris);max-width:520px;margin:0 auto 40px}
.contact__btn{
  display:inline-block;background:var(--jaune);color:var(--noir);
  font-size:15.5px;font-weight:700;padding:18px 44px;
  transition:transform .25s,box-shadow .25s,background .25s;
}
.contact__btn:hover{transform:translateY(-3px);background:var(--jaune-fonce);box-shadow:0 14px 40px rgba(242,194,0,.32)}

/* ============ FOOTER ============ */
.footer{background:var(--noir);color:var(--blanc);padding:70px 48px 34px}
.footer__grid{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer__logo{height:38px;width:auto;margin-bottom:20px}
.footer__about{font-size:14px;color:var(--gris-clair);line-height:1.7;max-width:280px}
.footer__heading{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:20px;font-weight:600}
.footer__list{list-style:none}
.footer__list li{margin-bottom:12px}
.footer__list a{font-size:14px;color:var(--gris-clair);transition:color .25s}
.footer__list a:hover{color:var(--jaune)}
.footer__info{font-style:normal;font-size:14px;color:var(--gris-clair);line-height:1.9}
.footer__info a:hover{color:var(--jaune)}
.footer__legal-label{margin-top:18px;font-size:12.5px;color:var(--gris);line-height:1.6}
.footer__bottom{
  max-width:var(--max);margin:52px auto 0;padding-top:26px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;
  font-size:12.5px;color:var(--gris);
}

/* ============ REVEAL AU SCROLL ============ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s ease,transform .9s cubic-bezier(.16,1,.3,1)}
.reveal.in{opacity:1;transform:translateY(0)}

/* ============ RESPONSIVE ============ */
@media(max-width:900px){
  .nav{padding:18px 24px}
  .nav.scrolled{padding:12px 24px}
  .nav__links{
    display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;
    background:rgba(246,244,239,.98);backdrop-filter:blur(14px);padding:24px;gap:22px;
    box-shadow:0 12px 30px rgba(0,0,0,.12);
  }
  .nav__links.open{display:flex}
  .nav__links a{color:var(--noir)}
  .nav__burger{display:flex}

  .about__grid{grid-template-columns:1fr;gap:48px}
  .svc{grid-template-columns:1fr;gap:32px;padding:50px 24px}
  .svc:nth-child(even) .svc__media{order:1}
  .svc:nth-child(even) .svc__body{order:2}
  .svc__img--color{opacity:1} /* mobile : couleur direct, pas de survol */

  .gallery__grid{grid-template-columns:1fr;gap:20px}
  .gallery__col--offset{margin-top:0}
  .shot img{filter:grayscale(0) brightness(1) contrast(1)} /* mobile : images éclairées */

  .footer__grid{grid-template-columns:1fr 1fr;gap:36px}
  .intro{padding:90px 24px 70px}
  .about{padding:20px 24px 70px}
  .services__head{padding:0 24px}
  .gallery{padding:80px 0 90px}
  .gallery__head{padding:0 24px}
  .gallery__grid{padding:0 24px}
  .contact{padding:80px 24px}
  .footer{padding:56px 24px 30px}
}
@media(max-width:520px){
  .stats{grid-template-columns:1fr;border-left:2px solid var(--noir)}
  .footer__grid{grid-template-columns:1fr}
  .hero__tag{letter-spacing:.3em;font-size:13px}
}

/* ============ ACCESSIBILITÉ : mouvement réduit ============ */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .svc__img--color{opacity:1}
  .shot img{filter:grayscale(0) brightness(1) contrast(1)}
}

/* ============ FOCUS CLAVIER ============ */
a:focus-visible,button:focus-visible{outline:2px solid var(--jaune-fonce);outline-offset:3px}