:root{
  --bg:#0b0b0b;--bg2:#151515;--card:#202020;--silver:#b8b8b8;--silver2:#d8d8d8;
  --text:#f2f2f0;--muted:#aaa;--line:rgba(216,216,216,.18);--warm:#d7b46a;--max:1180px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;line-height:1.6}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.site-header{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100vw - var(--max))/2));position:fixed;inset:0 0 auto;z-index:50;background:rgba(11,11,11,.84);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.04em}
.brand-icon{width:42px;height:42px;object-fit:contain}
.main-nav{display:flex;align-items:center;gap:24px;font-size:.9rem}
.main-nav a{color:#d7d7d7}.main-nav a:hover{color:white}
.nav-cta{border:1px solid #777;padding:9px 14px;border-radius:4px}
.menu-toggle{display:none;background:none;border:1px solid #555;color:white;padding:8px 10px}
.hero{min-height:760px;display:grid;align-items:center;position:relative;background:url('../images/silverfilm-fond-accueil-diaphragme.webp') center/cover no-repeat;padding-top:76px}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,5,5,.94) 0%,rgba(5,5,5,.65) 45%,rgba(5,5,5,.12) 72%)}
.hero-content{position:relative;z-index:2}
.eyebrow,.section-kicker{letter-spacing:.28em;font-size:.78rem;color:#bdbdbd;margin:0 0 14px;font-weight:700}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(3rem,7vw,6.3rem);line-height:.95;letter-spacing:-.045em;max-width:900px;margin-bottom:28px}
h1 span{color:var(--silver2)}
.hero-text{max-width:650px;color:#d0d0d0;font-size:1.14rem;margin-bottom:34px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:3px;font-weight:700;font-size:.92rem}
.btn-primary{background:#ececea;color:#111}
.btn-secondary{border:1px solid #888;background:rgba(0,0,0,.25)}
.section{padding:105px 0}
.section-dark{background:var(--bg2)}
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:72px;align-items:center}
h2{font-size:clamp(2.1rem,4vw,3.8rem);line-height:1.05;letter-spacing:-.035em;margin-bottom:26px}
.intro p,.section-lead,.contact p{color:#bdbdbd;max-width:760px}
.note{padding-left:16px;border-left:2px solid #626262;font-size:.92rem}
.photo-card{margin:0;border:1px solid var(--line);background:#111;padding:8px}
.photo-card img{aspect-ratio:4/3;object-fit:cover}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.service-card{background:#111;border:1px solid var(--line);overflow:hidden}
.service-card img{width:100%;height:260px;object-fit:cover}
.service-content{padding:26px}
.service-content>span{color:#737373;font-size:.8rem}
.service-content h3{font-size:1.5rem;margin:8px 0 12px}
.service-content p{color:#aaa;margin:0}
.process{display:grid;grid-template-columns:repeat(5,1fr);margin-top:42px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.process div{padding:24px 18px;border-right:1px solid var(--line)}
.process div:last-child{border-right:0}
.process b,.process span{display:block}.process span{color:#888;font-size:.84rem;margin-top:5px}
.film-test{background:linear-gradient(180deg,#191714 0%,#0d0d0d 100%);border-top:1px solid rgba(215,180,106,.18);border-bottom:1px solid rgba(215,180,106,.18)}
.film-test-head{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
.film-test-head>p{color:#c1b8a6}
.film-load{margin:44px 0 24px;border:1px solid rgba(215,180,106,.28);background:#080808;padding:8px}
.film-load img{width:100%;max-height:630px;object-fit:cover}
figcaption{color:#817a6d;font-size:.78rem;margin-top:9px}
.film-results{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:22px}
.film-results figure{margin:0;background:#0b0b0b;border:1px solid var(--line);padding:8px}
.film-results img{width:100%;aspect-ratio:16/10;object-fit:cover}
.ready-banner{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-top:38px;padding:30px 0;border-top:1px solid rgba(215,180,106,.25);border-bottom:1px solid rgba(215,180,106,.25)}
.ready-banner span{letter-spacing:.2em;color:#9f9278;font-size:.8rem}
.ready-banner strong{font-size:clamp(1.8rem,3.8vw,3.5rem);font-weight:500}
.grade-grid{display:grid;grid-template-columns:repeat(6,1fr);border:1px solid var(--line);margin-top:38px}
.grade-grid>div{padding:26px 18px;border-right:1px solid var(--line);min-height:205px}
.grade-grid>div:last-child{border-right:0}
.grade-grid strong{display:block;font-size:2.7rem;font-weight:400;color:#e2e2e2}
.grade-grid b,.grade-grid span{display:block}.grade-grid span{font-size:.82rem;color:#888;margin-top:8px}
.grade-note{color:#777;margin-top:18px;font-size:.86rem}
.availability{padding:86px 0;background:#1b1b1b;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.availability-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.availability h2{margin-bottom:12px}.availability p{color:#aaa;margin-bottom:0}
.contact{text-align:center}.contact .container{display:grid;justify-items:center}
.text-link{border-bottom:1px solid #777;padding-bottom:4px;color:#ddd}
.site-footer{padding:38px 0;background:#070707;border-top:1px solid var(--line);color:#888;font-size:.82rem}
.footer-inner{display:grid;grid-template-columns:1fr auto;gap:25px;align-items:center}
.footer-brand{display:flex;align-items:center;gap:12px;color:#ddd}.footer-brand img{width:42px}.footer-brand span{display:block;color:#777}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}.footer-inner>p{grid-column:1/-1;margin:0;border-top:1px solid var(--line);padding-top:18px}
@media(max-width:980px){
  .menu-toggle{display:block}.main-nav{position:absolute;top:76px;left:0;right:0;background:#101010;display:none;flex-direction:column;align-items:flex-start;padding:24px 20px;border-bottom:1px solid var(--line)}
  .main-nav.open{display:flex}.split,.film-test-head{grid-template-columns:1fr}.cards{grid-template-columns:1fr}.service-card img{height:330px}.process{grid-template-columns:1fr 1fr}.grade-grid{grid-template-columns:repeat(3,1fr)}.grade-grid>div{border-bottom:1px solid var(--line)}.availability-inner{align-items:flex-start;flex-direction:column}
}
@media(max-width:640px){
  .container{width:min(var(--max),calc(100% - 28px))}.hero{min-height:680px;background-position:64% center}.hero-overlay{background:linear-gradient(90deg,rgba(5,5,5,.96),rgba(5,5,5,.66))}
  .section{padding:74px 0}.process{grid-template-columns:1fr}.process div{border-right:0;border-bottom:1px solid var(--line)}
  .film-results{grid-template-columns:1fr}.ready-banner{align-items:flex-start;flex-direction:column}.grade-grid{grid-template-columns:1fr 1fr}.footer-inner{grid-template-columns:1fr}
}

.cards-carousel{grid-template-columns:repeat(3,1fr)}
.carousel{position:relative;overflow:hidden;background:#090909;border-bottom:1px solid var(--line)}
.carousel-track{position:relative;aspect-ratio:3/2}
.carousel-slide{position:absolute;inset:0;margin:0;opacity:0;pointer-events:none;transition:opacity .28s ease}
.carousel-slide.is-active{opacity:1;pointer-events:auto}
.carousel-slide img{width:100%;height:100%;object-fit:cover}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.35);background:rgba(5,5,5,.72);color:#fff;font-size:2rem;line-height:1;display:grid;place-items:center;cursor:pointer;z-index:3;backdrop-filter:blur(6px)}
.carousel-btn:hover{background:rgba(20,20,20,.92)}
.carousel-btn.prev{left:12px}.carousel-btn.next{right:12px}
.carousel-dots{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.carousel-dots button{width:9px;height:9px;border-radius:50%;border:1px solid rgba(255,255,255,.8);background:transparent;padding:0;cursor:pointer}
.carousel-dots button.is-active{background:#fff}
.carousel-counter{position:absolute;left:14px;bottom:10px;z-index:3;font-size:.78rem;color:#eee;background:rgba(0,0,0,.42);padding:4px 8px;border-radius:999px}
@media(max-width:980px){.cards-carousel{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.cards-carousel{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.carousel-slide{transition:none}}

/* --- V4 : formulaire de contact --- */
.contact-layout{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(360px,1.15fr);
  gap:clamp(34px,6vw,84px);
  align-items:start;
}
.contact-intro{max-width:620px}
.contact-note{
  margin-top:24px;
  padding:14px 16px;
  border-left:2px solid rgba(255,255,255,.28);
  color:var(--muted);
  background:rgba(255,255,255,.025);
}
.contact-direct{margin-top:28px}
.contact-form{
  border:1px solid var(--line);
  background:linear-gradient(145deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border-radius:18px;
  padding:clamp(22px,3vw,34px);
}
.form-row{display:grid;gap:8px;margin-bottom:18px}
.form-row label{
  font-size:.78rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:#d9d9d9;
}
.form-row input,
.form-row select,
.form-row textarea{
  width:100%;
  border:1px solid rgba(255,255,255,.16);
  background:#0d0d0d;
  color:#f3f3f3;
  border-radius:10px;
  padding:13px 14px;
  font:inherit;
  outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-row input,
.form-row select{min-height:48px}
.form-row textarea{resize:vertical;min-height:150px}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  border-color:rgba(255,255,255,.5);
  box-shadow:0 0 0 3px rgba(255,255,255,.06);
}
.form-row select option{background:#111;color:#fff}
.contact-submit{border:0;cursor:pointer;min-height:48px}
.form-privacy{margin:14px 0 0;color:var(--muted);font-size:.82rem}
.form-status{
  margin:0 0 20px;
  padding:13px 15px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.04);
}
.form-status.success{border-color:rgba(146,190,146,.45)}
.form-status.error{border-color:rgba(205,125,125,.5)}
.form-hp{
  position:absolute!important;
  left:-10000px!important;
  width:1px!important;
  height:1px!important;
  overflow:hidden!important;
}
@media(max-width:820px){
  .contact-layout{grid-template-columns:1fr}
}