/* ============================================================
   Book — Sébastien Lagneaux · Architecte
   Direction "Studio blanc" — feuille de style principale
   ============================================================ */

:root{
  --cream:#FAFAF8;
  --ink:#15150F;
  --text-2:#54514a;
  --text-3:#7a7165;
  --meta:#6b675f;
  --warm:#a7a299;
  --warm-dark:#8a857b;
  --warm-mute:#7c776d;
  --border:#ECE8DF;
  --border-chip:#d4ccbe;
  --border-dark:#2c2b25;
  --accent:#C5462B;
  --maxw:1500px;
  --pad-x:56px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--cream);
  color:var(--ink);
  font-family:'Hanken Grotesk',system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}

.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad-x);padding-right:var(--pad-x);}

/* ---------- NAV ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(250,250,248,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav__in{display:flex;justify-content:space-between;align-items:center;padding:20px var(--pad-x);max-width:var(--maxw);margin:0 auto;}
.logo{font-weight:800;font-size:19px;letter-spacing:-.02em;}
.logo span{color:var(--accent);}
.nav__links{display:flex;gap:34px;align-items:center;font-size:13.5px;font-weight:600;}
.nav__links a:hover{color:var(--accent);}
.lang{color:var(--warm);font-weight:500;}
.lang a.active{color:var(--ink);font-weight:700;}
.lang a:hover{color:var(--accent);}

/* ---------- HERO ---------- */
.hero{padding:72px var(--pad-x) 52px;max-width:var(--maxw);margin:0 auto;}
.eyebrow{font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--warm);}
.hero h1{font-weight:800;font-size:96px;line-height:.94;letter-spacing:-.045em;margin:30px 0 0;max-width:1200px;}
.hero h1 .mute{color:var(--warm);}
.hero__row{display:flex;justify-content:space-between;align-items:flex-end;margin-top:42px;gap:40px;flex-wrap:wrap;}
.hero__lead{font-size:17px;line-height:1.6;color:var(--text-2);max-width:480px;margin:0;}
.stats{display:flex;gap:54px;font-weight:700;}
.stat__n{font-size:44px;letter-spacing:-.03em;}
.stat__l{font-size:12px;font-weight:600;color:var(--warm);text-transform:uppercase;letter-spacing:.08em;margin-top:4px;}

/* ---------- FEATURE ---------- */
.feature{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad-x);}
.feature__img{aspect-ratio:24/9;background:linear-gradient(120deg,#d6d2c8,#ada592);position:relative;background-size:cover;background-position:center;}
.feature__cap{position:absolute;bottom:26px;left:30px;right:30px;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;}
.feature__ey{font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:rgba(21,21,15,.55);margin-bottom:8px;}
.feature__title{font-weight:800;font-size:30px;letter-spacing:-.02em;color:var(--ink);}
.ph{font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:rgba(21,21,15,.5);}

/* ---------- SECTION HEAD ---------- */
.sec{padding:88px var(--pad-x) 40px;max-width:var(--maxw);margin:0 auto;}
.sec__head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:38px;}
.sec__head h2{font-weight:800;font-size:54px;line-height:1;letter-spacing:-.03em;margin:0;}
.sec__label{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--warm);}

/* ---------- FILTERS ---------- */
.chips{display:flex;gap:12px;margin-bottom:34px;flex-wrap:wrap;}
.chip{padding:9px 18px;border-radius:999px;font-size:13px;font-weight:600;border:1px solid var(--border-chip);background:transparent;color:#6b6358;cursor:pointer;transition:all .2s;font-family:inherit;}
.chip:hover{border-color:var(--ink);}
.chip.active{background:var(--ink);color:var(--cream);border-color:var(--ink);}

/* ---------- GRID ---------- */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px 26px;}
.grid.cols-3{grid-template-columns:repeat(3,1fr);}
.card{cursor:pointer;}
.card__img{aspect-ratio:7/5;transition:transform .28s;position:relative;background-size:cover;background-position:center;}
.card:hover .card__img{transform:translateY(-5px);}
.card__ph{position:absolute;bottom:14px;left:16px;font-size:10px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:rgba(21,21,15,.42);}
.card__row{display:flex;justify-content:space-between;align-items:baseline;margin-top:16px;}
.card__title{font-weight:700;font-size:22px;letter-spacing:-.01em;}
.card__loc{font-size:13px;font-weight:600;color:var(--warm);}
.card__meta{font-size:13.5px;color:var(--meta);margin-top:6px;}
.card__link{display:inline-block;margin-top:14px;font-size:13px;font-weight:700;color:var(--ink);border-bottom:2px solid var(--accent);padding-bottom:2px;}

/* ---------- ATELIER ---------- */
.atelier{padding:80px var(--pad-x);max-width:var(--maxw);margin:0 auto;}
.atelier__grid{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:center;}
.atelier h2{font-weight:800;font-size:46px;line-height:1.05;letter-spacing:-.03em;margin:22px 0 24px;}
.atelier p{font-size:16px;line-height:1.65;color:var(--text-2);margin:0;max-width:520px;}
.atelier__img{aspect-ratio:4/5;background:linear-gradient(135deg,#d8d4ca,#b0a78f);background-size:cover;background-position:center;}

/* ---------- AVANT / APRÈS ---------- */
.ba{padding:48px var(--pad-x) 96px;max-width:var(--maxw);margin:0 auto;}
.ba__head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:30px;}
.ba__head h2{font-weight:800;font-size:46px;letter-spacing:-.03em;margin:0;}
.ba__head h2 .mute{color:var(--warm);}
.ba__hint{font-size:14px;color:var(--text-3);max-width:330px;margin:0;text-align:right;line-height:1.55;}
.ba__stage{position:relative;width:100%;height:580px;overflow:hidden;user-select:none;cursor:ew-resize;touch-action:none;}
.ba__after{position:absolute;inset:0;background:linear-gradient(135deg,#cbbfa6,#9a8a68);background-size:cover;background-position:center;}
.ba__before{position:absolute;top:0;left:0;height:100%;width:50%;overflow:hidden;}
.ba__before-inner{position:absolute;top:0;left:0;height:100%;background:linear-gradient(135deg,#6f6a61,#454039);background-size:cover;background-position:center;}
.ba__tag{position:absolute;bottom:20px;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.85);}
.ba__tag--after{right:24px;}
.ba__tag--before{left:24px;color:rgba(255,255,255,.78);}
.ba__handle{position:absolute;top:0;height:100%;left:50%;width:2px;background:var(--cream);transform:translateX(-1px);pointer-events:none;}
.ba__knob{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:48px;height:48px;border-radius:50%;background:var(--cream);color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;box-shadow:0 4px 18px rgba(0,0,0,.28);}

/* ---------- TÉMOIGNAGES ---------- */
.testi{max-width:var(--maxw);margin:0 auto;padding:80px var(--pad-x);}
.testi__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.testi__card{margin:0;border-top:2px solid var(--ink);padding:24px 0 0;display:flex;flex-direction:column;gap:22px;}
.testi__quote{margin:0;font-size:19px;line-height:1.5;letter-spacing:-.01em;color:var(--ink);}
.testi__by{margin-top:auto;}
.testi__author{display:block;font-weight:700;font-size:15px;}
.testi__role{display:block;font-size:13px;color:var(--warm);margin-top:3px;}

/* ---------- CONTACT ---------- */.contact{background:var(--ink);color:var(--cream);}
.contact__in{max-width:var(--maxw);margin:0 auto;padding:96px var(--pad-x) 52px;}
.contact .eyebrow{color:var(--warm-dark);}
.contact h2{font-weight:800;font-size:76px;line-height:.98;letter-spacing:-.045em;margin:26px 0 46px;max-width:1000px;}
.contact h2 .mute{color:var(--warm-mute);}
.contact__row{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:30px;border-top:1px solid var(--border-dark);padding-top:36px;}
.coords{display:flex;gap:56px;flex-wrap:wrap;}
.coord__l{font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--warm-dark);margin-bottom:8px;}
.coord__v{font-weight:700;font-size:19px;}
.contact__foot{display:flex;justify-content:space-between;margin-top:64px;font-size:12.5px;color:var(--warm-dark);flex-wrap:wrap;gap:10px;}

/* ---------- FORM ---------- */
.btn{display:inline-block;border:none;cursor:pointer;font-family:inherit;background:var(--cream);color:var(--ink);border-radius:999px;padding:15px 28px;font-weight:700;font-size:15px;}
.btn:hover{background:#fff;}
.form{margin-top:44px;display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:820px;}
.form .full{grid-column:1 / -1;}
.form label{display:block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--warm-dark);margin-bottom:8px;}
.form input,.form textarea{width:100%;background:transparent;border:1px solid var(--border-dark);border-radius:4px;padding:13px 15px;color:var(--cream);font-family:inherit;font-size:15px;}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--warm);}
.form textarea{min-height:130px;resize:vertical;}
.note{padding:14px 18px;border-radius:6px;font-size:14px;font-weight:600;margin-bottom:26px;}
.note--ok{background:rgba(120,180,120,.16);color:#bfe3bf;border:1px solid rgba(120,180,120,.4);}
.note--err{background:rgba(200,90,60,.16);color:#f0bfae;border:1px solid rgba(200,90,60,.4);}

.feature__link{display:block;}
.feature__link:hover .feature__img{filter:brightness(.97);}

/* ---------- PAGE PROJET ---------- */
.pj-head{max-width:var(--maxw);margin:0 auto;padding:40px var(--pad-x) 30px;}
.pj-back{display:inline-block;font-size:13px;font-weight:700;color:var(--warm);margin-bottom:30px;}
.pj-back:hover{color:var(--accent);}
.pj-head__row{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap;}
.pj-title{font-weight:800;font-size:72px;line-height:.96;letter-spacing:-.045em;margin:0;max-width:900px;}
.pj-facts{display:flex;gap:40px;}
.pj-fact__l{font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--warm);margin-bottom:6px;}
.pj-fact__v{font-weight:700;font-size:18px;}
.pj-cover{aspect-ratio:16/9;position:relative;background-size:cover;background-position:center;}
.pj-cover .ph{position:absolute;bottom:18px;left:20px;}
.pj-about{max-width:var(--maxw);margin:0 auto;padding:72px var(--pad-x) 40px;}
.pj-about__grid{display:grid;grid-template-columns:220px 1fr;gap:40px;}
.pj-lead{font-size:22px;line-height:1.5;font-weight:600;letter-spacing:-.01em;margin:0 0 22px;max-width:760px;}
.pj-body{font-size:16.5px;line-height:1.75;color:var(--text-2);max-width:760px;}
.pj-gallery{max-width:var(--maxw);margin:0 auto;padding:40px var(--pad-x) 60px;}
.pj-ba{max-width:var(--maxw);margin:0 auto;padding:40px var(--pad-x) 20px;}
.pj-ba .ba__head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:26px;}
.pj-ba .ba__head h2{font-weight:800;font-size:38px;letter-spacing:-.03em;margin:0;}
.pj-ba .ba__head h2 .mute{color:var(--warm);}
.pj-ba .ba__hint{font-size:14px;color:var(--text-3);max-width:330px;margin:0;text-align:right;line-height:1.55;}
.pj-ba .ba__stage{height:520px;}
.pj-ba .ba__handle{background:#fff;}
.pj-ba .ba__knob{background:#fff;}.pj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.pj-shot{display:block;aspect-ratio:3/2;background-size:cover;background-position:center;background-color:#e3ddd0;transition:transform .28s;cursor:zoom-in;}
.pj-shot:hover{transform:translateY(-4px);}
.pj-shot--wide{grid-column:1 / -1;aspect-ratio:21/9;}
.pj-foot{max-width:var(--maxw);margin:0 auto;padding:20px var(--pad-x) 90px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;}
.btn-dark{display:inline-block;background:var(--ink);color:var(--cream);border-radius:999px;padding:15px 28px;font-weight:700;font-size:15px;}
.btn-dark:hover{background:#000;}
.pj-next{text-align:right;}
.pj-next__l{display:block;font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--warm);}
.pj-next__t{display:block;font-weight:800;font-size:24px;letter-spacing:-.02em;margin-top:4px;}
.pj-next:hover .pj-next__t{color:var(--accent);}

/* ---------- LIGHTBOX ---------- */
.lb{position:fixed;inset:0;z-index:1000;background:rgba(15,15,10,.94);display:none;align-items:center;justify-content:center;}
.lb.is-open{display:flex;}
.lb__img{max-width:88vw;max-height:86vh;object-fit:contain;box-shadow:0 20px 60px rgba(0,0,0,.5);}
.lb__close{position:absolute;top:22px;right:28px;background:none;border:none;color:var(--cream);font-size:40px;line-height:1;cursor:pointer;font-family:inherit;}
.lb__nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(250,250,248,.12);border:none;color:var(--cream);width:56px;height:56px;border-radius:50%;font-size:30px;cursor:pointer;font-family:inherit;transition:background .2s;}
.lb__nav:hover{background:rgba(250,250,248,.25);}
.lb__prev{left:26px;}
.lb__next{right:26px;}
.lb__count{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:var(--cream);font-size:13px;font-weight:600;letter-spacing:.08em;opacity:.8;}

@media (max-width:1100px){
  .pj-title{font-size:52px;}
  .pj-about__grid{grid-template-columns:1fr;gap:14px;}
}
@media (max-width:720px){
  .pj-head__row{flex-direction:column;align-items:flex-start;gap:24px;}
  .pj-title{font-size:38px;}
  .pj-facts{gap:26px;}
  .pj-cover{aspect-ratio:4/3;}
  .pj-grid{grid-template-columns:1fr;}
  .pj-shot,.pj-shot--wide{aspect-ratio:3/2;}
  .pj-foot{flex-direction:column;align-items:flex-start;}
  .pj-next{text-align:left;}
  .lb__nav{width:44px;height:44px;font-size:24px;}
  .lb__prev{left:10px;}
  .lb__next{right:10px;}
  .lb__img{max-width:94vw;}
}
@media (max-width:1100px){
  .hero h1{font-size:64px;}
  .contact h2{font-size:52px;}
  .atelier__grid{grid-template-columns:1fr;gap:36px;}
  .grid,.grid.cols-3{grid-template-columns:repeat(2,1fr);}
  .testi__grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:720px){
  :root{--pad-x:22px;}
  .nav__links{gap:18px;font-size:12.5px;}
  .nav__links a.hide-sm{display:none;}
  .hero h1{font-size:44px;}
  .hero__row{flex-direction:column;align-items:flex-start;gap:28px;}
  .stats{gap:32px;}
  .stat__n{font-size:34px;}
  .sec__head{flex-direction:column;align-items:flex-start;gap:12px;}
  .sec__head h2{font-size:38px;}
  .grid,.grid.cols-3{grid-template-columns:1fr;}
  .testi__grid{grid-template-columns:1fr;}
  .feature__cap{flex-direction:column;align-items:flex-start;gap:10px;}
  .feature__title{font-size:22px;}
  .ba__head{flex-direction:column;align-items:flex-start;gap:12px;}
  .ba__hint{text-align:left;}
  .ba__stage{height:360px;}
  .contact h2{font-size:38px;}
  .form{grid-template-columns:1fr;}
  .coords{gap:26px;}
}