/* Éclat des Alpes - design system (prestige sombre : anthracite + or + serif, direction Gemini) */
:root{
  --deep:#14161a; --panel:#1b1e23; --panel-2:#212429;
  --gold:#c9a86a; --gold-dark:#b8912f; --gold-soft:rgba(201,168,106,.3);
  --light:#efece6; --muted:#a29e97; --faint:rgba(239,236,230,.06);
  --line:rgba(201,168,106,.22);
  --serif:"Cormorant Garamond",Georgia,serif;
  --sans:"Jost",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
  --pad:clamp(1.5rem,4vw,4rem);
  --maxw:1360px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--deep);color:var(--light);font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);font-weight:300;line-height:1.65;overflow-x:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .5s var(--ease),letter-spacing .5s var(--ease),padding .5s var(--ease)}
ul{list-style:none}
h1,h2,h3,h4,.serif{font-family:var(--serif);font-weight:500;line-height:1.05}
/* grain */
body::before{content:"";position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");opacity:.035;pointer-events:none;z-index:9999}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.eyebrow{font-family:var(--sans);text-transform:uppercase;letter-spacing:.26em;font-size:.72rem;color:var(--gold);margin-bottom:1.4rem;display:block}
.hairline{height:1px;background:var(--gold-soft);width:100%;border:none}
.tag-ph{color:var(--gold);border-bottom:1px dotted var(--gold-soft);font-style:italic}
.lead{color:var(--muted);font-size:1.08rem;max-width:56ch}

/* buttons + links */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;padding:1rem 2.5rem;font-family:var(--sans);text-transform:uppercase;letter-spacing:.15em;font-size:.78rem;cursor:pointer;transition:all .5s var(--ease)}
.btn-gold{background:var(--gold);color:var(--deep);border:1px solid var(--gold)}
.btn-gold:hover{background:transparent;color:var(--gold)}
.btn-outline{background:transparent;color:var(--gold);border:1px solid var(--gold)}
.btn-outline:hover{background:var(--gold);color:var(--deep)}
.text-link{font-family:var(--sans);text-transform:uppercase;letter-spacing:.15em;font-size:.72rem;color:var(--gold);display:inline-flex;align-items:center;gap:.5rem}
.text-link svg{width:18px;height:18px}
.text-link:hover{letter-spacing:.22em;color:var(--light)}

/* masthead */
.masthead{padding:1.8rem 0;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;background:rgba(20,22,26,.86);backdrop-filter:blur(10px)}
.masthead .wrap{display:flex;justify-content:space-between;align-items:center;gap:1.5rem}
.logo{font-family:var(--serif);font-size:1.7rem;letter-spacing:-.01em;color:var(--light);white-space:nowrap}
.logo em{color:var(--gold);font-style:italic}
.nav-desktop{display:flex;gap:2.6rem}
.nav-desktop a{font-size:.7rem;text-transform:uppercase;letter-spacing:.2em;color:var(--muted)}
.nav-desktop a:hover{color:var(--gold)}
.masthead-cta{font-size:.68rem;text-transform:uppercase;letter-spacing:.15em;border:1px solid var(--gold);padding:.65rem 1.2rem;color:var(--gold);white-space:nowrap}
.masthead-cta:hover{background:var(--gold);color:var(--deep)}
.mobile-toggle{display:none;background:none;border:none;cursor:pointer;color:var(--gold)}
.mobile-toggle svg{width:26px;height:26px}
#mobile-menu{position:fixed;top:0;right:-100%;width:82%;max-width:360px;height:100vh;background:var(--panel);z-index:100;padding:4.5rem 2rem;transition:right .5s var(--ease);border-left:1px solid var(--gold)}
#mobile-menu.active{right:0}
#mobile-menu .close{position:absolute;top:1.5rem;right:1.5rem;background:none;border:0;color:var(--gold);font-size:1.6rem;cursor:pointer}
.mnav{display:flex;flex-direction:column;gap:1.6rem;margin-top:1rem}
.mnav a{font-family:var(--serif);font-size:1.7rem;color:var(--light)}
.mnav a:hover{color:var(--gold)}

/* hero */
.hero{min-height:86vh;display:flex;align-items:center;position:relative;padding:4rem 0;overflow:hidden}
.hero::after{content:"";position:absolute;top:0;right:0;width:50%;height:100%;background:radial-gradient(circle at 80% 30%,rgba(201,168,106,.08),transparent 60%);pointer-events:none}
.hero-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:4rem;align-items:center;position:relative;z-index:2}
.hero-title{font-size:clamp(3rem,7.5vw,6rem);line-height:.98;margin-bottom:2.2rem}
.hero-title em{color:var(--gold);font-style:italic}
.hero-lead{font-size:1.12rem;max-width:46ch;color:var(--muted);margin-bottom:2.8rem}
.hero-actions{display:flex;align-items:center;gap:2.2rem;flex-wrap:wrap}
.hero-frame{height:min(560px,60vh);border:1px solid var(--line);position:relative;display:grid;place-items:center}
.hero-frame::after{content:"";position:absolute;width:1px;height:100%;background:var(--gold-soft);left:50%;top:0}
.hero-frame .mark{width:66%;height:66%;border:1px solid var(--line);display:grid;place-items:center;position:relative}
.hero-frame .mark span{font-family:var(--serif);font-style:italic;font-size:2.4rem;color:var(--gold);opacity:.5}
.hero.interior{min-height:auto;padding:5rem 0 3.5rem}
.hero.interior .hero-layout{grid-template-columns:1fr;max-width:52rem}
.hero.interior .hero-title{font-size:clamp(2.4rem,5vw,4rem);margin-bottom:1.6rem}

/* generic section rhythm */
.section{padding:var(--pad) 0}
.section-lg{padding:clamp(5rem,10vw,10rem) 0}
.panel{background:var(--panel)}
.sec-head{max-width:60ch;margin-bottom:3.5rem}
.sec-head h2{font-size:clamp(2rem,4vw,3.2rem)}
.sec-head p{color:var(--muted);margin-top:1rem}

/* breadcrumb */
.crumb{padding:1.6rem 0;border-bottom:1px solid var(--line)}
.crumb ol{display:flex;flex-wrap:wrap;gap:.5rem;font-size:.68rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted)}
.crumb li::after{content:"/";margin-left:.5rem;color:var(--gold-soft)}
.crumb li:last-child::after{content:""}
.crumb a{color:var(--gold)}

/* univers */
.univers-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.univers-card{padding:3.4rem 1.8rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .5s var(--ease);display:flex;flex-direction:column}
.univers-card:last-child{border-right:none}
.univers-card:hover{background:var(--panel-2)}
.univers-num{font-family:var(--serif);color:var(--gold);font-size:1.15rem;margin-bottom:1.8rem;display:block}
.univers-card h3{font-size:1.7rem;margin-bottom:.9rem}
.univers-card p{font-size:.9rem;color:var(--muted);margin-bottom:2rem;flex:1}
.univers-card .hairline{margin-bottom:1.6rem}

/* manifesto */
.manifesto-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:5rem;align-items:flex-start}
.manifesto-quote{font-size:clamp(1.8rem,3.6vw,3.2rem);line-height:1.12;position:relative}
.manifesto-quote::before{content:"&";position:absolute;top:-2.5rem;left:-2.5rem;font-size:9rem;opacity:.05;color:var(--gold);font-family:var(--serif);pointer-events:none}
.manifesto-prose{padding-top:2rem;border-top:1px solid var(--gold)}
.manifesto-prose p{color:var(--muted)}
.manifesto-prose p+p{margin-top:1.4rem}

/* prestation rows (liste) */
.prestation-row{display:flex;align-items:center;justify-content:space-between;gap:2rem;padding:2.4rem 0;border-bottom:1px solid var(--line);transition:padding .5s var(--ease),background .5s var(--ease)}
.prestation-row:first-of-type{border-top:1px solid var(--line)}
.prestation-row:hover{padding-left:1.4rem;background:rgba(201,168,106,.03)}
.prestation-info{display:flex;align-items:baseline;gap:2.4rem;min-width:0}
.prestation-index{color:var(--gold);font-size:.85rem}
.prestation-name{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.prestation-short{color:var(--muted);font-size:.92rem;max-width:34ch;text-align:right;margin-left:auto}
.prestation-row .arw{color:var(--gold);flex:0 0 auto}
.prestation-row .arw svg{width:22px;height:22px}

/* editorial split (prose + fiche) */
.editorial{display:grid;grid-template-columns:1.15fr .85fr;gap:4rem;align-items:start}
.prose h2{font-size:clamp(1.6rem,2.8vw,2.3rem);margin-bottom:1rem}
.prose h3{font-size:1.5rem;margin:2.4rem 0 .8rem}
.prose p{color:var(--muted);margin-bottom:1.1rem}
.prose a{color:var(--gold);border-bottom:1px solid var(--gold-soft)}
.prose a:hover{border-color:var(--gold)}
.fiche{border:1px solid var(--line);padding:2.2rem;position:sticky;top:6rem}
.fiche h3{font-size:1.5rem;margin-bottom:1.4rem}
.fiche-list{display:grid;gap:1rem}
.fiche-list li{display:flex;gap:.8rem;align-items:baseline;color:var(--muted);font-size:.92rem;padding-bottom:1rem;border-bottom:1px solid var(--faint)}
.fiche-list li:last-child{border-bottom:none;padding-bottom:0}
.fiche-list .k{color:var(--gold);font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;flex:0 0 auto;min-width:6.5rem}
.matieres{display:grid;gap:1rem;margin-top:1.4rem}
.matieres li{display:flex;gap:1rem;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:1rem;color:var(--muted)}
.matieres li b{font-family:var(--serif);font-weight:500;color:var(--light);font-size:1.2rem}
.matieres .idx{color:var(--gold);font-size:.8rem}

/* secteurs */
.secteurs-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;margin-top:1rem}
.secteur-col h4{font-size:1.45rem;margin-bottom:1.3rem;padding-bottom:1rem;border-bottom:1px solid var(--line)}
.secteur-col h4 a:hover{color:var(--gold)}
.secteur-list{display:flex;flex-direction:column;gap:.7rem;font-family:var(--sans);text-transform:uppercase;letter-spacing:.1em;font-size:.7rem;color:var(--muted)}
.secteur-list a:hover{color:var(--gold);padding-left:.4rem}

/* commune grid */
.commune-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:0;border-top:1px solid var(--line)}
.commune-link{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;padding:1.5rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .5s var(--ease)}
.commune-link:hover{background:var(--panel-2)}
.commune-link .nom{font-family:var(--serif);font-size:1.35rem}
.commune-link .cp{color:var(--gold);font-size:.7rem;letter-spacing:.12em}

/* exigence */
.exigence-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:4.5rem}
.exigence-item{text-align:center}
.exigence-icon{color:var(--gold);font-family:var(--serif);font-size:2rem;margin-bottom:1.8rem;display:inline-block;position:relative;padding-bottom:.7rem}
.exigence-icon::after{content:"";position:absolute;bottom:0;left:25%;width:50%;height:1px;background:var(--gold)}
.exigence-item h3{font-size:1.7rem;margin-bottom:1.1rem}
.exigence-item p{font-size:.94rem;color:var(--muted);line-height:1.8}

/* faq */
.faq-lux{max-width:60rem;border-top:1px solid var(--line)}
.faq-lux details{border-bottom:1px solid var(--line);padding:.4rem 0}
.faq-lux summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:1.5rem;padding:1.5rem 0;font-family:var(--serif);font-size:1.4rem}
.faq-lux summary::-webkit-details-marker{display:none}
.faq-lux summary::after{content:"+";color:var(--gold);font-family:var(--sans);font-weight:300;font-size:1.6rem;transition:transform .5s var(--ease)}
.faq-lux details[open] summary::after{transform:rotate(45deg)}
.faq-lux .ans{color:var(--muted);padding:0 0 1.6rem}

/* cta */
.cta-box{border:1px solid var(--gold);padding:clamp(3rem,7vw,6rem) 2rem;text-align:center;max-width:1000px;margin:0 auto;position:relative}
.cta-box::before,.cta-box::after{content:"";position:absolute;width:42px;height:42px;border:1px solid var(--gold)}
.cta-box::before{top:-21px;left:-21px;border-right:none;border-bottom:none}
.cta-box::after{bottom:-21px;right:-21px;border-left:none;border-top:none}
.cta-box h2{font-size:clamp(2rem,4vw,3.4rem);margin-bottom:1.2rem}
.cta-box p{color:var(--muted);margin-bottom:2.6rem;max-width:48ch;margin-inline:auto}
.cta-actions{display:flex;gap:1.6rem;justify-content:center;flex-wrap:wrap}

/* contact */
.contact-lux{display:grid;grid-template-columns:.9fr 1.1fr;gap:4rem;align-items:start}
.contact-info li{padding:1.4rem 0;border-bottom:1px solid var(--line)}
.contact-info .k{color:var(--gold);font-size:.68rem;text-transform:uppercase;letter-spacing:.18em;display:block;margin-bottom:.4rem}
.contact-info .v{font-family:var(--serif);font-size:1.4rem}
.form-lux{border:1px solid var(--line);padding:2.4rem}
.field-lux{margin-bottom:1.4rem}
.field-lux label{display:block;font-size:.68rem;text-transform:uppercase;letter-spacing:.16em;color:var(--gold);margin-bottom:.6rem}
.field-lux input,.field-lux select,.field-lux textarea{width:100%;background:transparent;border:none;border-bottom:1px solid var(--line);color:var(--light);font-family:var(--sans);font-size:1rem;padding:.7rem 0}
.field-lux input:focus,.field-lux select:focus,.field-lux textarea:focus{outline:none;border-color:var(--gold)}
.field-lux select option{background:var(--panel);color:var(--light)}
.field-lux textarea{resize:vertical;min-height:110px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem}
.form-note{font-size:.78rem;color:var(--muted);margin-top:1rem}

/* footer */
.footer{padding:5.5rem 0 2.5rem;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:3.5rem;margin-bottom:4.5rem}
.footer-logo{font-family:var(--serif);font-size:1.5rem;margin-bottom:1.2rem;display:block}
.footer-col p{color:var(--muted);font-size:.9rem;max-width:26ch}
.footer-col h5{font-family:var(--sans);text-transform:uppercase;letter-spacing:.2em;font-size:.7rem;color:var(--gold);margin-bottom:1.6rem}
.footer-links{display:flex;flex-direction:column;gap:.9rem}
.footer-links a{font-size:.86rem;color:var(--muted)}
.footer-links a:hover{color:var(--light);padding-left:.4rem}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;padding-top:2.4rem;border-top:1px solid var(--faint);font-size:.68rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.footer-bottom nav{display:flex;gap:1.8rem;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--gold)}

@media(max-width:1024px){
  .univers-grid{grid-template-columns:repeat(2,1fr)}
  .univers-card:nth-child(2n){border-right:none}
  .secteurs-grid{grid-template-columns:repeat(2,1fr)}
  .exigence-grid{grid-template-columns:1fr;gap:3rem}
  .hero-layout,.manifesto-layout,.editorial,.contact-lux{grid-template-columns:1fr;gap:2.6rem}
  .hero-frame{display:none}
  .fiche{position:static}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-desktop,.masthead-cta{display:none}
  .mobile-toggle{display:block}
  .univers-grid,.secteurs-grid{grid-template-columns:1fr}
  .univers-card{border-right:none}
  .prestation-row{flex-direction:column;align-items:flex-start;gap:1rem}
  .prestation-short{text-align:left;margin-left:0}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}