/* ===================================================================
   ARV Conseil — feuille de style
   Palette : ink / paper / bronze / pine
   Typo : Fraunces (titres) + Inter (texte courant)
=================================================================== */

:root{
  --ink:#1b1a17;
  --ink-soft:#3a362e;
  --paper:#f7f3ec;
  --paper-alt:#efe8da;
  --bronze:#c9a24f;
  --bronze-dark:#a07f36;
  --pine:#2f4a3d;
  --pine-dark:#1f332a;
  --line:#ded3ba;
  --muted:#6d6759;
  --white:#ffffff;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Fraunces',serif;
  font-weight:600;
  color:var(--ink);
  line-height:1.18;
  margin:0 0 .5em;
}
p{margin:0 0 1em;}
a{color:inherit;}
img,svg{max-width:100%;display:block;}
ul{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--bronze);outline-offset:3px;}

.wrap{max-width:1180px;margin:0 auto;padding:0 28px;}

/* ---------- Header & navigation ---------- */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(247,243,236,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:18px;padding-bottom:18px;
}
.wordmark{
  font-family:'Fraunces',serif;font-size:1.25rem;font-weight:600;
  text-decoration:none;color:var(--ink);letter-spacing:.01em;
}
.main-nav ul{display:flex;gap:30px;list-style:none;}
.main-nav a{
  font-size:.82rem;text-transform:uppercase;letter-spacing:.07em;
  color:var(--muted);text-decoration:none;padding:4px 0;
  border-bottom:2px solid transparent;transition:color .15s, border-color .15s;
}
.main-nav a:hover,.main-nav a[aria-current="page"]{
  color:var(--ink);border-bottom-color:var(--bronze);
}
.menu-toggle{
  display:none;background:none;border:none;font-size:1.5rem;
  color:var(--ink);cursor:pointer;line-height:1;padding:4px 6px;
}
.nav-overlay{
  position:fixed;inset:0;z-index:60;background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  transform:translateY(-100%);transition:transform .38s ease;
}
.nav-overlay.is-open{transform:translateY(0);}
.nav-overlay ul{list-style:none;display:flex;flex-direction:column;gap:26px;text-align:center;}
.nav-overlay a{color:var(--paper);text-decoration:none;font-family:'Fraunces',serif;font-size:1.5rem;}
.nav-overlay a[aria-current="page"]{color:var(--bronze);}
.close-nav{
  position:absolute;top:22px;right:26px;background:none;border:none;
  color:var(--paper);font-size:2rem;cursor:pointer;line-height:1;
}
@media (max-width:880px){
  .main-nav{display:none;}
  .menu-toggle{display:block;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--ink);color:var(--paper);
  padding:108px 0 88px;
}
.hero-small{padding:78px 0 58px;}
.hero .motif{position:absolute;inset:0;width:100%;height:100%;opacity:.5;}
.hero .wrap{position:relative;z-index:2;max-width:760px;}
.eyebrow{
  font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;
  color:var(--bronze);margin-bottom:16px;font-weight:600;
}
.eyebrow.on-paper{color:var(--bronze-dark);}
.hero h1{font-size:clamp(1.9rem,3.6vw,3rem);color:var(--paper);margin-bottom:20px;}
.hero-small h1{font-size:clamp(1.7rem,3vw,2.35rem);}
.hero .lede{font-size:1.14rem;color:#d9d3c2;max-width:640px;margin:0;}

/* ---------- Main content rhythm ---------- */
main section{padding:74px 0;}
.section-head{max-width:660px;margin-bottom:34px;}
.section-head h2{font-size:1.85rem;}
.lede-body{font-size:1.02rem;color:var(--ink-soft);max-width:720px;margin-bottom:16px;}
.lede-body:last-child{margin-bottom:0;}

.panel-dark{background:var(--ink);color:var(--paper);}
.panel-dark h2,.panel-dark h3{color:var(--paper);}
.panel-dark .lede-body{color:#cdc7b7;}
.panel-dark .list-clean p{color:#cdc7b7;}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px;}
@media (max-width:780px){.two-col{grid-template-columns:1fr;gap:38px;}}

/* ---------- Cards (accueil) ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:900px){.grid-cards{grid-template-columns:1fr;}}
.card{background:var(--white);border:1px solid var(--line);padding:30px 26px;}
.tag{
  display:inline-block;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;
  color:var(--bronze-dark);border:1px solid var(--bronze);padding:3px 10px;margin-bottom:16px;
}
.card h3{font-size:1.15rem;margin-bottom:10px;}
.card p{color:var(--ink-soft);font-size:.95rem;}
.card-link{
  display:inline-block;margin-top:16px;font-size:.85rem;font-weight:600;
  color:var(--pine);text-decoration:none;border-bottom:1px solid var(--pine);
}

/* ---------- Stats ---------- */
.stat-row{display:flex;gap:52px;flex-wrap:wrap;margin-top:38px;}
.stat b{display:block;font-family:'Fraunces',serif;font-size:2.15rem;color:var(--bronze);font-weight:600;}
.stat span{font-size:.85rem;color:#b6b0a0;}

/* ---------- Listes propres (typologies) ---------- */
.list-clean{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:34px;}
@media (max-width:780px){.list-clean{grid-template-columns:1fr;}}
.list-clean h3{font-size:1.08rem;margin-bottom:8px;}
.list-clean p{font-size:.94rem;color:var(--ink-soft);}

/* ---------- Photovoltaïque / datacenter blocs ---------- */
.split-block{margin-bottom:40px;}
.subsection-label{
  font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;
  color:var(--bronze-dark);font-weight:600;margin-bottom:16px;
}
.criteria-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
@media (max-width:780px){.criteria-grid{grid-template-columns:1fr;}}
.item h3{font-size:1rem;margin-bottom:6px;}
.item p{font-size:.9rem;color:var(--ink-soft);margin:0;}
.panel-dark .item p{color:#d9d3c2;}

/* ---------- Preuves / références (mandats) ---------- */
.proof-intro{max-width:740px;}
.category-block{margin-bottom:60px;}
.category-block:last-child{margin-bottom:0;}
.category-head{
  display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;
  border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:28px;
}
.panel-dark .category-head{border-bottom-color:rgba(255,255,255,.18);}
.category-head h3{font-size:1.3rem;margin:0;}
.category-head .count{font-size:.8rem;color:var(--muted);}
.panel-dark .category-head .count{color:#a8a190;}

.proof-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px;}
.proof-card{
  position:relative;background:var(--white);border:1px solid var(--line);
  padding:26px 24px 22px;display:flex;flex-direction:column;gap:12px;
}
.panel-dark .proof-card{background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.16);}
.proof-icon{width:42px;height:42px;}
.proof-icon *{stroke:var(--bronze-dark);fill:none;stroke-width:1.1;}
.panel-dark .proof-icon *{stroke:var(--bronze);}
.proof-card h4{font-size:1.02rem;margin:0;padding-right:70px;}
.proof-card p{font-size:.9rem;color:var(--ink-soft);margin:0;}
.panel-dark .proof-card p{color:#cdc7b7;}
.proof-card .price{
  font-family:'Fraunces',serif;font-size:1.3rem;font-weight:600;color:var(--bronze-dark);
}
.panel-dark .proof-card .price{color:var(--bronze);}
.proof-status{
  position:absolute;top:22px;right:20px;font-size:.66rem;text-transform:uppercase;
  letter-spacing:.06em;padding:3px 9px;border:1px solid var(--pine);color:var(--pine);
  white-space:nowrap;
}
.panel-dark .proof-status{border-color:var(--bronze);color:var(--bronze);}
.proof-status.is-sold{background:var(--pine);color:#fff;border-color:var(--pine);}
.panel-dark .proof-status.is-sold{background:var(--bronze);color:var(--ink);border-color:var(--bronze);}
.proof-meta{
  display:flex;flex-wrap:wrap;gap:5px 18px;font-size:.78rem;color:var(--muted);
  border-top:1px solid var(--line);padding-top:12px;margin-top:auto;
}
.panel-dark .proof-meta{border-top-color:rgba(255,255,255,.16);color:#a8a190;}
.proof-meta b{color:var(--ink);font-weight:600;}
.panel-dark .proof-meta b{color:var(--paper);}

.proof-filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.proof-filters button{
  font-family:'Inter',sans-serif;font-size:.8rem;letter-spacing:.03em;
  background:transparent;border:1px solid var(--line);color:var(--ink-soft);
  padding:8px 16px;cursor:pointer;transition:background .15s,color .15s,border-color .15s;
}
.proof-filters button:hover{border-color:var(--bronze);}
.proof-filters button.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink);}

/* ---------- Recherches actives (preuve côté demande) ---------- */
.search-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;}
.search-card{
  border-left:3px solid var(--bronze);padding:20px 22px;background:rgba(0,0,0,.02);
}
.panel-dark .search-card{background:rgba(255,255,255,.045);}
.search-card .tag-small{
  display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.07em;
  color:var(--bronze-dark);margin-bottom:8px;font-weight:600;
}
.panel-dark .search-card .tag-small{color:var(--bronze);}
.search-card p{font-size:.88rem;margin:0 0 6px;color:var(--ink-soft);}
.panel-dark .search-card p{color:#cdc7b7;}
.search-card .budget{font-weight:600;color:var(--ink);}
.panel-dark .search-card .budget{color:var(--paper);}

/* ---------- Bloc note / process ---------- */
.note-block{
  border:1px dashed var(--line);padding:22px 26px;font-size:.9rem;color:var(--muted);margin-top:8px;
}
.panel-dark .note-block{border-color:rgba(255,255,255,.25);color:#b6b0a0;}

/* ---------- CTA ---------- */
.cta-block{background:var(--pine-dark);color:#fff;padding:64px 0;text-align:center;}
.cta-block h2{color:#fff;font-size:1.7rem;margin-bottom:24px;}
.btn{
  display:inline-block;background:var(--bronze);color:var(--ink);
  padding:14px 34px;text-decoration:none;font-weight:600;font-size:.92rem;
  letter-spacing:.02em;transition:background .15s,color .15s;
}
.btn:hover{background:var(--bronze-dark);color:#fff;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#c9c3b3;padding:54px 0 26px;font-size:.86rem;}
.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:38px;margin-bottom:34px;}
@media (max-width:780px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h3{color:var(--paper);font-size:.98rem;margin-bottom:12px;}
.footer-grid p{margin:0 0 5px;}
.footer-grid a{color:var(--bronze);text-decoration:none;}
.footer-base{
  display:flex;justify-content:space-between;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);font-size:.78rem;color:#8f8a7a;
}
@media (max-width:600px){.footer-base{flex-direction:column;gap:6px;}}