/* BT 30 — direction B « Béton brut clair » (DESIGN.md, choix Mourad 2026-09-01).
   Filets autorisés (hiérarchie fermée, check-traits) :
   1. filet terracotta 4 px — LE motif signature : ouverture du bandeau hero, du CTA band,
      filets verticaux des cellules (réassurance, étapes, faits)
   2. filet horizontal 1 px --line (index éditorial, listes, séparations douces)
   Matière photographique (crépi/béton) en appuis — jamais de texte posé sur photo. */

:root{
  --bg:#f2f1ef; --surface:#ffffff;
  --ink:#23262a; --body:#3c4147; --muted:#6b6f75;
  --accent:#c2542b; --accent-dark:#a84621; --accent-pale:#f7e9e1;
  --dark:#2b2e33; --dark-deep:#26292e;
  --line:#e3e0db;
  --fs-display:clamp(34px,4.2vw,58px);
  --fs-h1:clamp(29px,3.2vw,42px);
  --fs-h2:clamp(25px,2.4vw,34px);
  --font-display:"Bricolage Grotesque",system-ui,sans-serif;
  --font-body:"Work Sans",system-ui,sans-serif;
  --r-panel:12px; --r-inner:7px;
  --shadow-soft:0 20px 50px -22px rgba(24,22,20,.35);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--body);font-family:var(--font-body);font-size:16.5px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--font-display);color:var(--ink);letter-spacing:-.018em;text-wrap:balance;line-height:1.12}
p{text-wrap:pretty}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.num{font-feature-settings:'tnum'}
.wrap{max-width:1180px;margin:0 auto;padding-left:clamp(20px,4vw,48px);padding-right:clamp(20px,4vw,48px)}

/* ---------- Boutons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;font-size:15.5px;padding:14px 26px;border-radius:6px;border:0;cursor:pointer;background:var(--accent);color:#fff;transition:background-color .18s ease-out,border-color .18s ease-out,transform .12s ease-out;min-height:44px}
.btn:hover{background:var(--accent-dark)}
.btn:active{transform:scale(.96)}
.btn--ghost{background:transparent;color:var(--ink);border:1.5px solid #c8c4be}
.btn--ghost:hover{background:var(--surface);border-color:var(--ink)}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{background:var(--accent-pale)}

/* ---------- Filet signature ---------- */
.rule-terra{height:4px;background:var(--accent);border:0}

/* ---------- Header ---------- */
.hd{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;gap:38px;height:74px;max-width:1380px;margin:0 auto;padding:0 clamp(16px,3vw,40px)}
.wordmark{font:800 24px/1 var(--font-display);letter-spacing:-.02em;color:var(--ink);flex:none}
.wordmark span{color:var(--accent)}
.nav{display:flex;align-items:center;gap:26px;font-weight:600;font-size:14.5px;color:#4c5157}
.nav>a{padding:8px 2px;min-height:40px;display:inline-flex;align-items:center;transition:color .15s ease-out}
.nav>a:hover,.nav>a[aria-current]{color:var(--accent)}
.hd-right{margin-left:auto;display:flex;align-items:center;gap:20px}
.hd-zone{font-size:13.5px;color:var(--muted);letter-spacing:.02em}
.hd .btn{padding:11px 20px;font-size:14.5px}

/* Déroulant Prestations — panneau collé au bouton (aucun vide de survol) */
.dd{position:relative}
.dd-btn{display:inline-flex;align-items:center;gap:7px;font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:8px 2px;min-height:40px;transition:color .15s ease-out}
.dd-btn:hover{color:var(--accent)}
.dd-btn::after{content:"";width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .18s ease-out}
.dd[data-open] .dd-btn::after{transform:rotate(225deg) translateY(-1px)}
.dd-panel{position:absolute;left:-14px;top:100%;padding-top:10px;min-width:280px;display:none}
.dd[data-open] .dd-panel{display:block}
.dd-panel-in{background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow-soft);padding:8px;display:flex;flex-direction:column}
.dd-panel-in a{padding:12px 14px;border-radius:6px;font-weight:600;color:var(--ink);min-height:44px;display:flex;flex-direction:column;gap:2px;transition:background-color .15s ease-out}
.dd-panel-in a:hover{background:var(--accent-pale);color:var(--accent-dark)}
.dd-panel-in a small{font-weight:400;color:var(--muted);font-size:13.5px}

/* Burger */
.burger{display:none;margin-left:auto;margin-right:2px;width:44px;height:44px;border:0;background:none;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.burger i{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.mobnav{display:none}
@media (max-width:960px){
  .nav,.hd-right{display:none}
  .burger{display:flex}
  /* position:absolute (pas fixed) : le backdrop-filter du .hd fait du header le containing block d'un fixed — panneau écrasé à 58px */
  .mobnav[data-open]{display:block;position:absolute;top:100%;left:0;right:0;height:calc(100vh - 74px);height:calc(100dvh - 74px);background:var(--bg);z-index:39;overflow:auto;padding:18px clamp(20px,5vw,40px) 40px}
  .mobnav a{display:flex;align-items:center;min-height:52px;font:600 19px var(--font-body);color:var(--ink);border-bottom:1px solid var(--line)}
  .mobnav .sub{padding-left:18px;font-size:17px;color:var(--body)}
  .mobnav .btn{margin-top:22px;width:100%}
  body[data-navopen]{overflow:hidden}
  .burger[aria-expanded="true"] i:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
  .burger[aria-expanded="true"] i:nth-child(2){opacity:0}
  .burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
}

/* ---------- Hero accueil (B : photo nue + bandeau typographique) ---------- */
.hero-b .hero-img{width:100%;height:clamp(300px,52vh,560px);object-fit:cover}
.hero-b .band{border-top:4px solid var(--accent);background:var(--bg);padding:clamp(34px,5vw,62px) 0}
.hero-b .band-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:clamp(28px,4vw,64px);align-items:start}
.eyebrow{font:600 13px var(--font-body);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.hero-b h1{font-size:var(--fs-display);font-weight:800}
.hero-b .band-right{padding-top:30px}
.hero-b .lead{font-size:17px;margin-bottom:24px}
.ctas{display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:880px){
  .hero-b .hero-img{height:40vh;min-height:230px}
  .hero-b .band-grid{grid-template-columns:1fr;gap:14px}
  .hero-b .band-right{padding-top:0}
}

/* ---------- Bandeau pages internes ---------- */
.page-hero{display:grid;grid-template-columns:1.1fr .9fr;align-items:stretch;background:var(--surface);border-bottom:1px solid var(--line)}
.page-hero-txt{padding:clamp(36px,5vw,72px) clamp(20px,4vw,48px) clamp(36px,5vw,72px) clamp(20px,5vw,76px);display:flex;flex-direction:column;justify-content:center}
.page-hero h1{font-size:var(--fs-h1);margin-bottom:14px}
.page-hero .lead{font-size:17px;max-width:56ch}
.page-hero .ctas{margin-top:24px}
.page-hero-img{width:100%;height:100%;min-height:300px;object-fit:cover}
.page-hero--plain{grid-template-columns:1fr}
.page-hero--plain .page-hero-txt{padding-right:clamp(20px,5vw,76px)}
@media (max-width:820px){
  .page-hero{grid-template-columns:1fr}
  .page-hero-img{min-height:0;height:240px;order:-1}
}

/* ---------- Sections génériques ---------- */
.sec{padding:clamp(48px,7vw,92px) 0}
.sec--alt{background:var(--surface)}
.sec-head{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:end;margin-bottom:clamp(26px,3.5vw,44px)}
.sec-head h2{font-size:var(--fs-h2)}
.sec-head p{color:var(--muted)}
@media (max-width:760px){.sec-head{grid-template-columns:1fr;gap:10px}}

/* ---------- Bande réassurance (mise en valeur 2026-09-01 : carte vedette sombre + cartes ombrées, langage P-A/M-A) ---------- */
.reassure{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:clamp(16px,2vw,22px);align-items:stretch}
.reassure .cell{background:var(--surface);border-radius:12px;padding:clamp(20px,2.4vw,28px);box-shadow:0 16px 40px -20px rgba(24,22,20,.35)}
.reassure .cell--lead{background:var(--dark);display:flex;flex-direction:column;justify-content:center}
.reassure .cell--lead .t{color:#fff}
.reassure .cell--lead p{color:#c9c5c0}
.reassure .big10{font:800 clamp(40px,4vw,58px)/1 var(--font-display);color:#e8946a;letter-spacing:-.02em;margin:8px 0 10px}
.reassure .t{font:700 19px var(--font-display);color:var(--ink);margin-bottom:7px;letter-spacing:-.01em}
.reassure p{font-size:15.5px;color:var(--body)}
/* Sous ~880px, 3 colonnes écrasent les cellules (167px utiles) : la vedette passe pleine
   largeur et les 2 blanches se partagent la ligne. */
@media (max-width:880px){.reassure{grid-template-columns:1fr 1fr}.reassure .cell--lead{grid-column:1/-1}}
@media (max-width:760px){.reassure{grid-template-columns:1fr;gap:16px}}

/* ---------- Prestations : panneaux pleins alternés (choix Mourad P-A, 2026-09-01) ---------- */
.svc-panels .panel{display:grid;grid-template-columns:1.1fr 1fr;background:var(--bg);border-radius:12px;overflow:hidden;margin-bottom:20px;min-height:330px}
.svc-panels .panel:nth-child(even){grid-template-columns:1fr 1.1fr}
.svc-panels .panel img{width:100%;height:100%;object-fit:cover}
/* panel pair : l'img est première dans le DOM → colonne GAUCHE (l'order:2 qui annulait l'alternance a été retiré) */
.svc-panels .txt{padding:clamp(26px,3.4vw,52px);display:flex;flex-direction:column;justify-content:center;gap:14px}
.svc-panels .t{font:800 clamp(26px,2.6vw,36px) var(--font-display);color:var(--ink);letter-spacing:-.016em;line-height:1.12}
.svc-panels p{font-size:15.5px}
.svc-panels .go{font-weight:600;font-size:14.5px;color:var(--accent-dark);border-bottom:2px solid var(--accent);padding-bottom:2px;align-self:flex-start}
@media (max-width:820px){
  .svc-panels .panel,.svc-panels .panel:nth-child(even){grid-template-columns:1fr;min-height:0}
  .svc-panels .panel img,.svc-panels .panel:nth-child(even) img{height:220px;order:-1}
}

/* ---------- Méthode : frise de chantier (choix Mourad M-A, 2026-09-01) ---------- */
.frise{position:relative;padding:56px 0}
.frise::before{content:"";position:absolute;left:0;right:0;top:50%;height:4px;background:var(--accent)}
.frise .row{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,3vw,40px)}
.frise .step{position:relative;background:var(--surface);border-radius:12px;padding:22px 24px;box-shadow:0 16px 40px -20px rgba(24,22,20,.35)}
.frise .step::before{content:"";position:absolute;left:50%;width:16px;height:16px;background:var(--accent);border:4px solid var(--bg);border-radius:50%;transform:translateX(-50%)}
.frise .step:nth-child(odd){margin-bottom:96px}
.frise .step:nth-child(odd)::before{bottom:-12px}
.frise .step:nth-child(even){margin-top:96px}
.frise .step:nth-child(even)::before{top:-12px}
.frise .t{font:700 19px var(--font-display);color:var(--ink);margin-bottom:8px}
.frise p{font-size:15px}
@media (max-width:760px){
  .frise{padding:0}
  .frise::before{display:none}
  .frise .row{grid-template-columns:1fr}
  .frise .step:nth-child(odd),.frise .step:nth-child(even){margin:0 0 16px}
  .frise .step::before{display:none}
}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,4vw,64px);align-items:center}
.split-img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-panel);outline:1px solid rgba(35,38,42,.08);outline-offset:-1px}
.split h2{font-size:var(--fs-h2);margin-bottom:14px}
.split .big{font:700 clamp(40px,4.5vw,64px)/1 var(--font-display);color:var(--accent);letter-spacing:-.02em}
.split .big small{font:600 15px var(--font-body);color:var(--muted);letter-spacing:0;display:block;margin-top:6px}
@media (max-width:820px){.split{grid-template-columns:1fr}}

/* ---------- Bloc urgence ---------- */
.urgence{background:var(--accent-pale);border-radius:var(--r-panel);padding:clamp(24px,3.4vw,44px);display:grid;grid-template-columns:1.5fr auto;gap:24px;align-items:center}
.urgence h2{font-size:clamp(21px,2vw,26px);margin-bottom:8px}
.urgence p{font-size:15.5px}
@media (max-width:700px){.urgence{grid-template-columns:1fr}}

/* ---------- Mosaïque réalisations ---------- */
.mosaic{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}
.mosaic figure{position:relative;border-radius:var(--r-inner);overflow:hidden;margin:0}
.mosaic img{width:100%;height:100%;object-fit:cover;outline:1px solid rgba(35,38,42,.08);outline-offset:-1px}
.mosaic figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 10px;font:600 13.5px var(--font-body);color:#fff;text-shadow:0 1px 6px rgba(0,0,0,.6);background:linear-gradient(transparent,rgba(24,22,20,.74))}
.m-6{grid-column:span 6}.m-4{grid-column:span 4}.m-8{grid-column:span 8}.m-5{grid-column:span 5}.m-7{grid-column:span 7}
.mosaic .tall{grid-row:span 2}
.mosaic-even{grid-auto-rows:clamp(240px,26vw,380px)}
@media (max-width:760px){.m-6,.m-4,.m-8,.m-5,.m-7{grid-column:span 12}.mosaic .tall{grid-row:auto}}

/* Filtres galerie */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.filters button{font:600 14.5px var(--font-body);color:var(--body);background:var(--surface);border:1.5px solid var(--line);border-radius:6px;padding:9px 18px;min-height:40px;cursor:pointer;transition:border-color .15s ease-out,color .15s ease-out,background-color .15s ease-out}
.filters button[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.filters button:hover{border-color:var(--accent);color:var(--accent-dark)}
.filters button[aria-pressed="true"]:hover{color:#fff}

/* ---------- Duo de cellules (colonnes texte des splits) ---------- */
.duo{display:grid;gap:26px}
.duo .cell{border-left:4px solid var(--accent);padding-left:18px}
.duo .cell h2{margin-bottom:8px}

/* ---------- Q/R éditoriale (rénovation) — asymétrie question/réponse ---------- */
.qa-list{max-width:920px}
.qa-list .item{display:grid;grid-template-columns:minmax(170px,250px) 1fr;gap:10px 34px;padding:6px 0 6px 18px;border-left:4px solid var(--accent);margin-bottom:28px}
.qa-list .item:last-child{margin-bottom:0}
.qa-list .q{font:700 20px var(--font-display);color:var(--ink)}
.qa-list p{font-size:16px}
@media (max-width:700px){.qa-list .item{grid-template-columns:1fr;gap:8px}}

/* ---------- Tableau de faits ---------- */
.facts{display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(24px,3vw,48px)}
.facts .col{background:var(--surface);border-radius:var(--r-panel);padding:clamp(22px,3vw,36px)}
.facts .col h3{font-size:19px;margin-bottom:14px}
.facts li{list-style:none;padding:11px 0 11px 16px;border-left:4px solid var(--accent);margin-bottom:8px;font-size:15.5px;background:linear-gradient(90deg,var(--accent-pale),transparent 70%)}
.sec--alt .facts .col{background:var(--bg)}
@media (max-width:760px){.facts{grid-template-columns:1fr}}

/* ---------- Zone rayonnement (contact) ---------- */
.zone{position:relative;background:var(--surface);border-radius:var(--r-panel);padding:clamp(26px,3.4vw,44px);overflow:hidden}
.zone svg{width:100%;height:auto;display:block}

/* ---------- Bande CTA sombre ---------- */
.cta-band{background:var(--dark);color:#e9e7e4;border-top:4px solid var(--accent)}
.cta-band .in{padding-top:clamp(44px,6vw,76px);padding-bottom:clamp(44px,6vw,76px);display:grid;grid-template-columns:1.4fr auto;gap:26px;align-items:center}
.cta-band h2{color:#fff;font-size:var(--fs-h2);margin-bottom:10px}
.cta-band p{color:#c9c5c0;font-size:16px}
.cta-band .btn--light:hover{background:#f2e2d8}
@media (max-width:700px){.cta-band .in{grid-template-columns:1fr}}

/* ---------- Formulaire ---------- */
.form{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form .full{grid-column:1/-1}
.form label{display:block;font:600 14px var(--font-body);color:var(--ink);margin-bottom:6px}
.form input,.form textarea{width:100%;font:400 16px var(--font-body);color:var(--ink);background:var(--surface);border:1.5px solid #d5d1cb;border-radius:6px;padding:13px 14px;transition:border-color .15s ease-out}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--accent)}
.form textarea{min-height:140px;resize:vertical}
.form .hint{font-size:13px;color:var(--muted)}
@media (max-width:640px){.form{grid-template-columns:1fr}}

/* ---------- Footer ---------- */
.ft{background:var(--dark-deep);color:#c9c5c0}
.ft .in{padding-top:clamp(40px,5vw,64px);padding-bottom:28px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:clamp(26px,4vw,56px)}
.ft .wordmark{color:#fff;font-size:28px}
.ft .base{margin-top:10px;font-size:15px}
.ft h3{color:#fff;font:700 14px var(--font-body);letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}
.ft a{display:block;padding:5px 0;font-size:15px;transition:color .15s ease-out}
.ft a:hover{color:#fff}
.ft .legal{border-top:1px solid rgba(255,255,255,.14);margin-top:34px;padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 26px;justify-content:space-between;font-size:13.5px;color:#9a958f}
@media (max-width:760px){.ft .in{grid-template-columns:1fr;gap:26px}}

/* ---------- Reveal mosaïque (seule animation au scroll autorisée) ---------- */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .28s ease-out,transform .28s ease-out}
  .reveal.on{opacity:1;transform:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
}