/* ============================================================
   OLCG — Système visuel (Direction B · Ivoire & graphite)
   ============================================================ */
:root{
  --ivory:#f3efe8;
  --ivory-2:#ece6dc;
  --paper:#faf8f3;
  --ink:#1f1d1a;
  --ink-soft:#3a352f;
  --graphite:#222225;
  --graphite-2:#19191b;
  --bronze:#8c714a;
  --bronze-2:#b2935f;
  --bronze-soft:#c8ab7c;
  --muted:#6f685d;
  --muted-2:#938b7e;
  --line:rgba(31,29,26,0.14);
  --line-soft:rgba(31,29,26,0.08);
  --line-dk:rgba(255,255,255,0.13);
  --line-dk-soft:rgba(255,255,255,0.07);
  --serif:'Cormorant Garamond',Georgia,serif;
  --sans:'Hanken Grotesk',system-ui,sans-serif;
  --maxw:1240px;
  --pad:clamp(22px,5vw,72px);
  --radius:18px;
  --radius-lg:30px;
  --radius-pill:999px;
  --shadow:0 30px 60px -34px rgba(31,29,26,0.45);
  --shadow-soft:0 18px 44px -28px rgba(31,29,26,0.4);
  --metal:linear-gradient(118deg,#3a342c 0%,#9a8a72 38%,#e9e2d4 52%,#8a7c64 64%,#2c2823 100%);
  --metal-light:linear-gradient(118deg,#6b6155,#cdbfa6 45%,#fbf7ee 55%,#b6a78d 70%,#5a5145);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
::selection{background:var(--bronze);color:#fff;}

/* ---------- typography ---------- */
.eyebrow{font-size:11px;letter-spacing:0.34em;text-transform:uppercase;color:var(--bronze);font-weight:600;}
.eyebrow.on-dark{color:var(--bronze-soft);}
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-0.01em;margin:0;line-height:1.04;}
.display{font-size:clamp(42px,6.4vw,82px);}
.h2{font-size:clamp(32px,4.4vw,56px);}
.h3{font-size:clamp(23px,2.4vw,30px);}
.serif-em{font-style:italic;color:var(--bronze);}
.lede{font-size:clamp(16px,1.6vw,19px);line-height:1.72;color:var(--ink-soft);}
.muted{color:var(--muted);}
.kicker{font-family:var(--sans);font-size:12px;letter-spacing:0.16em;text-transform:uppercase;font-weight:600;color:var(--muted-2);}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);}
.section{padding:clamp(64px,9vw,128px) 0;}
.section.tight{padding:clamp(48px,6vw,84px) 0;}
.dark{background:var(--graphite);color:#ece9e4;}
.dark .lede{color:#bdb8b0;}
.dark .muted{color:var(--muted-2);}
.ivory-2{background:var(--ivory-2);}
.sec-head{max-width:760px;}
.sec-head .h2{margin:18px 0 0;}
.sec-head p{margin:20px 0 0;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-family:var(--sans);font-size:12.5px;letter-spacing:0.12em;text-transform:uppercase;font-weight:600;padding:16px 28px;border:1px solid transparent;border-radius:var(--radius-pill);cursor:pointer;transition:.25s ease;}
.btn .arr{transition:transform .25s ease;}
.btn:hover .arr{transform:translateX(4px);}
.btn-dark{background:var(--ink);color:var(--ivory);}
.btn-dark:hover{background:#000;}
.btn-metal{background:var(--metal-light);background-size:200% 100%;background-position:0 0;color:#1a1712;border:none;transition:background-position .5s ease;}
.btn-metal:hover{background-position:100% 0;}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--ivory);}
.btn-ghost.on-dark{border-color:rgba(255,255,255,0.4);color:#ece9e4;}
.btn-ghost.on-dark:hover{background:#ece9e4;color:var(--ink);}
.btn-link{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;letter-spacing:0.02em;border-bottom:1px solid var(--bronze);padding-bottom:4px;}
.btn-link .arr{transition:transform .25s ease;}
.btn-link:hover .arr{transform:translateX(4px);}

/* ---------- header / nav (floating pill) ---------- */
.site-head{position:fixed;top:0;left:0;right:0;z-index:50;padding:0;background:transparent;border:none;transition:transform .35s ease;}
.site-head .bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;margin-top:16px;padding:0 14px 0 22px;background:rgba(255,255,255,0.92);backdrop-filter:blur(14px);border:1px solid rgba(31,29,26,0.07);border-radius:var(--radius-pill);box-shadow:var(--shadow-soft);}
.site-head.hide{transform:translateY(-135%);}
.brand{display:flex;align-items:center;gap:13px;flex:none;}
.brand img{height:34px;width:auto;filter:brightness(0.32) saturate(0);}
.brand .wm{display:flex;flex-direction:column;line-height:1;}
.brand .wm b{font-family:var(--serif);font-weight:600;font-size:23px;letter-spacing:0.1em;}
.brand .wm small{font-size:7.5px;letter-spacing:0.2em;text-transform:uppercase;color:var(--muted-2);margin-top:5px;}
.nav{display:flex;align-items:center;gap:30px;}
.nav a{font-size:13px;letter-spacing:0.02em;color:var(--ink-soft);position:relative;padding:4px 0;white-space:nowrap;}
.nav a::after{content:'';position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--bronze);transition:width .25s ease;}
.nav a:hover::after,.nav a.active::after{width:100%;}
.nav a.active{color:var(--ink);}
.head-cta{display:flex;align-items:center;gap:14px;flex:none;}
.head-cta .btn{padding:14px 24px;font-size:11.5px;}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:10px;}
.burger span{width:22px;height:2px;background:var(--ink);display:block;transition:.25s;}
@media(max-width:1080px){
  .nav{display:none;position:absolute;top:calc(100% + 10px);left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;gap:0;padding:8px 26px 18px;border-radius:var(--radius);box-shadow:var(--shadow);}
  .nav.open{display:flex;}
  .nav a{width:100%;padding:15px 0;border-bottom:1px solid var(--line-soft);font-size:15px;}
  .burger{display:flex;}
  .head-cta .btn{display:none;}
}

/* ---------- footer ---------- */
.site-foot{background:var(--graphite-2);color:#cfcabf;}
.site-foot .top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:clamp(56px,7vw,90px) 0 56px;}
.site-foot .fbrand .wm b{font-family:var(--serif);font-size:30px;letter-spacing:0.08em;color:#f1ede6;display:block;}
.site-foot .fbrand p{margin:18px 0 0;color:#928c82;max-width:300px;font-size:14.5px;line-height:1.7;}
.site-foot h4{font-family:var(--sans);font-size:11px;letter-spacing:0.2em;text-transform:uppercase;color:var(--bronze-soft);margin:0 0 20px;font-weight:600;}
.site-foot ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:13px;}
.site-foot ul a,.site-foot .fcontact div{font-size:14.5px;color:#cfcabf;}
.site-foot ul a:hover{color:#fff;}
.site-foot .fcontact{display:flex;flex-direction:column;gap:14px;font-size:14.5px;}
.site-foot .fcontact b{color:#f1ede6;font-weight:600;display:block;font-size:13px;letter-spacing:0.02em;}
.site-foot .bottom{border-top:1px solid var(--line-dk-soft);padding:26px 0;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-size:12.5px;color:#7d776d;letter-spacing:0.02em;}
@media(max-width:860px){.site-foot .top{grid-template-columns:1fr 1fr;gap:36px;}}
@media(max-width:540px){.site-foot .top{grid-template-columns:1fr;}}

/* ---------- image slots ---------- */
image-slot{--cap:""; background:#d9d3c8; border-radius:var(--radius); }
.slot-frame{position:relative;border-radius:var(--radius);overflow:hidden;}
.slot-frame .cap{position:absolute;left:16px;bottom:14px;z-index:2;font-size:10.5px;letter-spacing:0.18em;text-transform:uppercase;color:rgba(255,255,255,0.92);background:rgba(20,18,15,0.55);backdrop-filter:blur(4px);padding:6px 11px;border-radius:var(--radius-pill);pointer-events:none;}

/* ---------- stat strip ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);}
.stats.on-dark{border-color:var(--line-dk);}
.stat{padding:34px 30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
.stats.on-dark .stat{border-color:var(--line-dk);}
.stat b{font-family:var(--serif);font-weight:500;font-size:clamp(38px,4vw,52px);line-height:1;display:block;}
.stat.metal b{background:var(--metal);-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat span{font-size:11px;letter-spacing:0.16em;text-transform:uppercase;color:var(--muted-2);margin-top:12px;display:block;}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr);}}

/* ---------- generic grid helpers ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:center;}
@media(max-width:880px){.grid-2{grid-template-columns:1fr;gap:40px;}}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,1,.36,1);}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none;}}

/* ---------- page hero (interior pages) ---------- */
.phero{background:var(--graphite);color:#ece9e4;padding:clamp(150px,18vh,210px) 0 clamp(56px,7vw,84px);position:relative;overflow:hidden;}
.phero .eyebrow{color:var(--bronze-soft);}
.phero h1{margin:18px 0 0;font-size:clamp(44px,6vw,76px);}
.phero p{margin:24px 0 0;max-width:560px;color:#bdb8b0;}
.phero .crumbs{font-size:12px;letter-spacing:0.14em;text-transform:uppercase;color:var(--muted-2);margin-bottom:0;}
.phero .crumbs a:hover{color:var(--bronze-soft);}

/* ============================================================
   LTP-inspired components (light & rounded)
   ============================================================ */

/* ---------- social rail ---------- */
.social-rail{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;gap:12px;}
.social-rail a{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.9);backdrop-filter:blur(8px);border:1px solid rgba(31,29,26,0.08);display:flex;align-items:center;justify-content:center;color:var(--ink);box-shadow:var(--shadow-soft);transition:.22s;}
.social-rail a:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.social-rail a svg{width:17px;height:17px;display:block;}
@media(max-width:1080px){.social-rail{display:none;}}

/* ---------- full-bleed home hero ---------- */
.home-hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;}
.home-hero .bg{position:absolute;inset:0;}
.home-hero .bg image-slot{width:100%;height:100%;border-radius:0;}
.home-hero::after{content:'';position:absolute;inset:0;background:linear-gradient(105deg,rgba(16,14,12,0.82) 0%,rgba(16,14,12,0.5) 45%,rgba(16,14,12,0.2) 100%);z-index:1;}
.home-hero .inner{position:relative;z-index:2;width:100%;padding-top:130px;padding-bottom:170px;}
.home-hero .eyebrow{color:var(--bronze-soft);}
.home-hero h1{color:#fff;margin:24px 0 0;font-size:clamp(48px,8vw,108px);line-height:0.98;}
.home-hero h1 .serif-em{color:var(--bronze-soft);}
.home-hero .sub{color:rgba(255,255,255,0.9);font-size:clamp(18px,2vw,24px);font-family:var(--serif);font-style:italic;margin:22px 0 0;max-width:640px;}
.home-hero .hero-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:40px;}
.btn-white{background:#fff;color:var(--ink);}
.btn-white:hover{background:var(--ivory);}

/* ---------- overlapping intro cards ---------- */
.overlap{position:relative;z-index:5;margin-top:-110px;}
.overlap-grid{display:grid;grid-template-columns:1.15fr 0.85fr;gap:24px;}
.ocard{background:#fff;border-radius:var(--radius-lg);padding:clamp(32px,4vw,52px);box-shadow:var(--shadow);}
.ocard.dark-card{background:var(--graphite);color:#ece9e4;}
.ocard .eyebrow{display:block;margin-bottom:18px;}
.ocard h2{margin-bottom:18px;}
.ocard .stmt{font-family:var(--serif);font-size:clamp(22px,2.4vw,30px);line-height:1.32;text-transform:uppercase;letter-spacing:0.01em;color:var(--bronze-soft);}
@media(max-width:880px){.overlap{margin-top:-70px;}.overlap-grid{grid-template-columns:1fr;}}

/* ---------- rounded cards / sections ---------- */
.section.dark{border-radius:var(--radius-lg);}
.dark-wrap{padding-left:var(--pad);padding-right:var(--pad);}
.round-block{background:var(--graphite);color:#ece9e4;border-radius:var(--radius-lg);padding:clamp(48px,6vw,86px) clamp(30px,5vw,72px);}

/* ---------- values ---------- */
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:clamp(40px,5vw,60px);}
.value{background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);padding:32px 28px;transition:.25s;}
.value:hover{box-shadow:var(--shadow-soft);transform:translateY(-3px);}
.value .vi{width:46px;height:46px;border-radius:50%;background:var(--ivory);display:flex;align-items:center;justify-content:center;color:var(--bronze);margin-bottom:20px;}
.value .vi svg{width:22px;height:22px;}
.value h4{font-family:var(--serif);font-weight:600;font-size:21px;margin:0 0 10px;}
.value p{font-size:14px;line-height:1.66;color:var(--muted);margin:0;}
@media(max-width:880px){.values{grid-template-columns:1fr 1fr;}}
@media(max-width:480px){.values{grid-template-columns:1fr;}}

/* ---------- zone d'intervention ---------- */
.zone{display:grid;grid-template-columns:0.9fr 1.1fr;gap:clamp(36px,5vw,64px);align-items:center;}
.zone .map-wrap{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-soft);position:relative;min-height:380px;}
.zone .map-wrap iframe{width:100%;height:100%;min-height:380px;border:0;display:block;filter:grayscale(0.3) contrast(1.05);}
.deps{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.dep{font-size:13px;font-weight:600;letter-spacing:0.04em;padding:11px 18px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--line);color:var(--ink-soft);}
.dep b{color:var(--bronze);}
.cities{font-size:15px;line-height:1.9;color:var(--muted);margin-top:24px;}
.cities b{color:var(--ink);font-weight:600;}
@media(max-width:880px){.zone{grid-template-columns:1fr;}}

/* ---------- activities (icon cards) ---------- */
.acts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:clamp(40px,5vw,60px);}
.act{background:rgba(255,255,255,0.04);border:1px solid var(--line-dk-soft);border-radius:var(--radius);padding:36px 32px;transition:.25s;}
.act:hover{background:rgba(255,255,255,0.07);}
.act .ai{width:56px;height:56px;border-radius:14px;background:rgba(200,171,124,0.14);display:flex;align-items:center;justify-content:center;color:var(--bronze-soft);margin-bottom:24px;}
.act .ai svg{width:28px;height:28px;}
.act h4{font-family:var(--serif);font-weight:600;font-size:23px;color:#f1ede6;margin:0 0 12px;}
.act p{font-size:14.5px;line-height:1.7;color:#b6b1a9;margin:0;}
@media(max-width:880px){.acts-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.acts-grid{grid-template-columns:1fr;}}

/* ---------- chantier types ---------- */
.types{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:clamp(40px,5vw,60px);}
.type{position:relative;border-radius:var(--radius);overflow:hidden;min-height:340px;display:flex;align-items:flex-end;}
.type image-slot{position:absolute;inset:0;width:100%;height:100%;border-radius:0;transition:transform .5s ease;}
.type:hover image-slot{transform:scale(1.05);}
.type::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(16,14,12,0.85),rgba(16,14,12,0.05) 65%);z-index:1;}
.type .tc{position:relative;z-index:2;padding:26px 24px;color:#fff;}
.type .tc h4{font-family:var(--serif);font-weight:600;font-size:22px;margin:0 0 8px;}
.type .tc p{font-size:13px;line-height:1.55;color:rgba(255,255,255,0.82);margin:0;}
@media(max-width:880px){.types{grid-template-columns:1fr 1fr;}}
@media(max-width:480px){.types{grid-template-columns:1fr;}}

/* ---------- engagements ---------- */
.engs{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;margin-top:clamp(40px,5vw,60px);}
.eng{background:var(--paper);padding:clamp(30px,3.5vw,48px);display:flex;gap:24px;align-items:flex-start;}
.eng .en{font-family:var(--serif);font-style:italic;font-size:30px;color:var(--bronze);line-height:1;flex:none;}
.eng h4{font-family:var(--serif);font-weight:600;font-size:23px;margin:0 0 10px;}
.eng p{font-size:14.5px;line-height:1.7;color:var(--muted);margin:0;}
@media(max-width:760px){.engs{grid-template-columns:1fr;}}

/* ---------- actualités ---------- */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:clamp(40px,5vw,60px);}
.post{background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s;}
.post:hover{box-shadow:var(--shadow-soft);transform:translateY(-3px);}
.post image-slot{width:100%;height:210px;border-radius:0;}
.post .pc{padding:26px 26px 30px;flex:1;display:flex;flex-direction:column;}
.post .date{font-size:11px;letter-spacing:0.14em;text-transform:uppercase;color:var(--bronze);}
.post h4{font-family:var(--serif);font-weight:600;font-size:22px;margin:12px 0 12px;line-height:1.2;}
.post p{font-size:14px;line-height:1.65;color:var(--muted);margin:0 0 18px;flex:1;}
@media(max-width:880px){.news{grid-template-columns:1fr;}}

/* ---------- big final CTA ---------- */
.final-cta{position:relative;border-radius:var(--radius-lg);overflow:hidden;padding:clamp(56px,8vw,110px) clamp(28px,5vw,80px);text-align:center;color:#fff;}
.final-cta .bg{position:absolute;inset:0;}
.final-cta .bg image-slot{width:100%;height:100%;border-radius:0;}
.final-cta::after{content:'';position:absolute;inset:0;background:linear-gradient(rgba(16,14,12,0.78),rgba(16,14,12,0.82));z-index:1;}
.final-cta .fc{position:relative;z-index:2;}
.final-cta h2{color:#fff;}
.final-cta p{color:rgba(255,255,255,0.86);max-width:560px;margin:22px auto 36px;}
.final-cta .btn-row{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}