/* =========================================================================
   HYGIÈNE HABITAT — editorial-technical redesign
   Concept « zone assainie » : rigueur de diagnostic, calme retrouvé.
   Palette : ink graphite / warm bone / volt chartreuse.
   Fonts : Archivo (display) · Inter (text) · Space Mono (labels)
   ========================================================================= */

:root{
  --ink:#14181a;          /* graphite ink */
  --ink-2:#1c2124;
  --ink-3:#252b2f;
  --paper:#f4f1e8;        /* warm bone */
  --paper-2:#ece7d9;
  --paper-3:#e2dcc9;
  --volt:#d7ef1f;         /* volt chartreuse */
  --volt-d:#c2d90b;
  --on-ink:#f2efe6;
  --on-ink-dim:#b9bfb3;
  --muted:#6d7267;
  --line-ink:rgba(20,24,26,.14);
  --line-paper:rgba(242,239,230,.16);
  --radius:14px;
  --font-d:"Archivo",system-ui,sans-serif;
  --font-t:"Inter",system-ui,sans-serif;
  --font-m:"Space Mono",ui-monospace,monospace;
  --header-h:78px;
  --callbar-h:64px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-t);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
strong{font-weight:600}

.container{width:min(1200px,92%);margin-inline:auto}
.skip{position:absolute;left:-999px;top:0;background:var(--volt);color:var(--ink);padding:12px 18px;z-index:200;font-weight:700;border-radius:0 0 8px 0}
.skip:focus{left:0}

/* ---------- typography helpers ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-m);font-size:.72rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:1.1rem;
}
.kicker .kdot{width:9px;height:9px;background:var(--volt);display:inline-block;border-radius:2px;transform:rotate(45deg)}
.kicker.light{color:var(--on-ink-dim)}
.kicker .kdot.v{background:var(--volt)}
h1,h2,h3{font-family:var(--font-d);line-height:1.04;font-weight:800;letter-spacing:-.015em}
h2{font-size:clamp(1.85rem,4.4vw,3rem)}
h2 em{font-style:normal;color:#52584c;font-weight:500}
h3{font-weight:700}
.accent{color:var(--volt);}
.accent{background:linear-gradient(100deg,var(--volt),var(--volt-d));-webkit-background-clip:text;background-clip:text;color:transparent}
section .sec-head{margin-bottom:2.6rem}
.sec-head h2{max-width:17ch}
.sec-head .sec-lead{max-width:56ch;color:var(--muted);margin-top:1rem;font-size:1.05rem}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--font-d);font-weight:800;letter-spacing:.01em;
  border-radius:10px;padding:.9rem 1.4rem;font-size:1rem;line-height:1;
  cursor:pointer;border:2px solid transparent;transition:.18s transform,.18s box-shadow,.18s background;
}
.btn:hover{transform:translateY(-2px)}
.btn-lg{padding:1.05rem 1.7rem;font-size:1.05rem}
.btn-xl{flex-direction:column;gap:.35rem;padding:1.5rem 2rem;font-size:1.5rem}
.btn-xl small{font-family:var(--font-t);font-weight:500;font-size:.82rem;letter-spacing:.02em}
.btn-volt{background:var(--volt);color:var(--ink);box-shadow:0 1px 0 rgba(0,0,0,.08)}
.btn-volt:hover{background:var(--volt-d)}
.btn-ink{background:var(--ink);color:var(--on-ink)}
.btn-ink:hover{background:#000}
.btn-ghost{border-color:var(--line-ink);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper-2)}
.btn-ghost-light{border-color:var(--line-paper);color:var(--on-ink)}
.btn-ghost-light:hover{background:var(--ink-2)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;background:var(--paper);
  border-bottom:1px solid var(--line-ink);
  transition:box-shadow .2s,background .2s;
}
.site-header.scrolled{box-shadow:0 10px 30px -20px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;gap:1.5rem;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:.8rem}
.brand-mark{
  width:46px;height:46px;border-radius:12px;background:var(--volt);color:var(--ink);
  display:grid;place-items:center;font-family:var(--font-d);font-weight:900;font-size:1.5rem;flex:none;
  box-shadow:inset 0 -3px 0 rgba(0,0,0,.12);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-family:var(--font-d);font-size:1.12rem;font-weight:800;letter-spacing:-.01em}
.brand-text small{font-family:var(--font-m);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.nav{display:flex;gap:1.7rem;margin-left:auto}
.nav a{font-weight:600;font-size:.98rem;color:#33383a;position:relative;padding:.3rem 0}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--volt-d);transition:width .2s}
.nav a:hover::after,.nav a:focus-visible::after{width:100%}
.nav a:hover{color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:1rem;margin-left:1.2rem}
.header-tel{display:flex;align-items:center;gap:.6rem;padding:.3rem .4rem;border-radius:10px}
.header-tel .tel-icon{width:40px;height:40px;border-radius:50%;background:var(--ink-2);position:relative;flex:none}
.header-tel .tel-icon::before,.header-tel .tel-icon::after{content:"";position:absolute}
.header-tel .tel-icon::before{left:50%;top:50%;width:15px;height:15px;transform:translate(-50%,-50%);border:2px solid var(--volt);border-radius:2px}
.header-tel small{display:block;font-family:var(--font-m);font-size:.6rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.header-tel strong{display:block;font-family:var(--font-d);font-size:1.05rem;font-weight:800;letter-spacing:.01em}
.header-tel:hover strong{color:#000}

/* ---------- hero ---------- */
.hero{position:relative;padding:clamp(3rem,7vw,5.5rem) 0 3rem;background:
  radial-gradient(1200px 500px at 85% -10%,rgba(215,239,31,.10),transparent 60%),var(--paper);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.hero h1{font-size:clamp(2.5rem,6vw,4.6rem);line-height:1.0;margin-bottom:1.4rem}
.hero h1 .accent{color:transparent}
.hero-lead{font-size:1.1rem;color:#3d4240;max-width:52ch;margin-bottom:2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem;align-items:center;margin-bottom:2rem}
.trust{display:flex;flex-wrap:wrap;gap:.55rem 1.4rem}
.trust li{font-family:var(--font-m);font-size:.74rem;letter-spacing:.03em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:.5rem}
.trust li::before{content:"";width:7px;height:7px;background:var(--volt-d);transform:rotate(45deg);flex:none}

.hero-fig{position:relative}
.fig-frame{position:relative;border-radius:20px;overflow:hidden;background:var(--ink-2);
  box-shadow:0 40px 70px -40px rgba(20,24,26,.5)}
.fig-frame img{width:100%;height:clamp(360px,46vw,570px);object-fit:cover}
.fig-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,24,26,.06),transparent 30%)}
.corner{position:absolute;width:26px;height:26px;pointer-events:none;z-index:3}
.corner-br{bottom:6px;right:6px;border-bottom:4px solid var(--volt);border-right:4px solid var(--volt)}
.hero-fig figcaption{display:flex;align-items:center;gap:.8rem;margin-top:.9rem}
.fig-tag{font-family:var(--font-m);font-size:.66rem;letter-spacing:.14em;background:var(--ink);color:var(--volt);padding:.35rem .6rem;border-radius:6px;font-weight:700;white-space:nowrap}
.hero-fig figcaption span:last-child{font-size:.85rem;color:var(--muted)}
.hero-strip{margin-top:3rem;display:flex;gap:6px;opacity:.9}
.hero-strip span{height:6px;flex:1;background:repeating-linear-gradient(90deg,var(--ink) 0 26px,transparent 26px 40px);opacity:.12}

/* ---------- proof band ---------- */
.proof{background:var(--ink);color:var(--on-ink);padding:2rem 0}
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}
.proof-item{display:flex;flex-direction:column;gap:.15rem;border-left:3px solid var(--volt);padding-left:1rem}
.proof-item strong{font-family:var(--font-d);font-size:1.05rem;font-weight:700;text-transform:uppercase;letter-spacing:.02em}
.proof-item span{font-size:.85rem;color:var(--on-ink-dim)}

/* ---------- sections generic ---------- */
.section{padding:clamp(3.5rem,8vw,6.5rem) 0}
.section .sec-head{padding-top:.5rem}

/* ---------- services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-ink);border:1px solid var(--line-ink);border-radius:16px;overflow:hidden}
.svc{background:var(--paper);padding:1.7rem 1.5rem 1.5rem;display:flex;flex-direction:column;position:relative;min-height:290px}
.svc::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--volt);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.svc:hover::before{transform:scaleX(1)}
.svc-num{font-family:var(--font-m);font-size:.8rem;font-weight:700;color:var(--muted);letter-spacing:.1em;margin-bottom:1rem;display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;border:1.5px solid var(--line-ink);border-radius:8px}
.svc h3{font-size:1.28rem;margin-bottom:.5rem}
.svc>p{font-size:.9rem;color:var(--muted);margin-bottom:1rem}
.svc ul li{font-size:.86rem;color:#3d4240;padding-left:1.1rem;position:relative;margin-bottom:.35rem}
.svc ul li::before{content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;background:var(--volt-d);transform:rotate(45deg)}
.svc-dark{background:var(--ink);color:var(--on-ink)}
.svc-dark .svc-num{color:var(--volt);border-color:var(--line-paper)}
.svc-dark h3{color:var(--on-ink)}
.svc-dark>p{color:var(--on-ink-dim)}
.svc-dark ul li{color:var(--on-ink)}
.svc-dark ul li::before{background:var(--volt)}
.marques{margin-top:3.2rem;padding-top:2rem;border-top:1px solid var(--line-ink)}
.marques .kicker{margin-bottom:1rem}
.marques-row{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1.6rem;font-family:var(--font-m);font-size:.72rem;letter-spacing:.05em;color:var(--muted)}
.marques-row>span{white-space:nowrap;text-transform:uppercase;font-weight:700}
.marques-row .sep{width:1px;height:22px;background:var(--line-ink);margin:0 .6rem}
.marques-row>span:not(.sep){opacity:.85}

/* ---------- méthode (dark) ---------- */
.methode{background:var(--ink);color:var(--on-ink)}
.methode .kicker.light{margin-bottom:1.2rem}
.methode h2{color:var(--on-ink);margin-bottom:2.4rem;max-width:16ch}
.methode-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
.methode-photo{position:sticky;top:calc(var(--header-h) + 20px);border-radius:18px;overflow:hidden;box-shadow:0 40px 70px -40px rgba(0,0,0,.6)}
.methode-photo img{width:100%;height:clamp(300px,40vw,520px);object-fit:cover}
.cap-mono{position:absolute;left:0;bottom:0;right:0;background:linear-gradient(180deg,transparent,rgba(0,0,0,.72));color:var(--volt);font-family:var(--font-m);font-size:.66rem;letter-spacing:.14em;padding:2.2rem 1.1rem .9rem;font-weight:700}
.steps{display:flex;flex-direction:column;gap:1.6rem;margin-bottom:2rem}
.steps li{display:flex;gap:1.2rem;align-items:flex-start;border-bottom:1px solid var(--line-paper);padding-bottom:1.6rem}
.steps li:last-child{border-bottom:0}
.step-n{flex:none;width:46px;height:46px;border:1.5px solid var(--line-paper);border-radius:12px;display:grid;place-items:center;font-family:var(--font-d);font-weight:900;font-size:1.3rem;color:var(--volt)}
.steps h3{font-size:1.2rem;margin-bottom:.3rem}
.steps p{color:var(--on-ink-dim);font-size:.98rem;max-width:46ch}
.methode .note{font-size:.88rem;color:var(--on-ink-dim);border-left:3px solid var(--volt);padding-left:1rem;max-width:52ch}
.note{font-size:.9rem;color:var(--muted);border-left:3px solid var(--volt-d);padding-left:1rem}

/* ---------- clients ---------- */
.clients-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem;grid-template-areas:"img img c1 c2" "img img c3 c4"}
.client{position:relative;border-radius:16px;overflow:hidden;min-height:250px}
.client.client-img{grid-area:img;display:flex}
.client.client-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.client.client-img:hover img{transform:scale(1.04)}
.client-flag{position:absolute;left:1rem;bottom:1rem;background:var(--volt);color:var(--ink);font-family:var(--font-m);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;font-weight:700;padding:.45rem .7rem;border-radius:8px}
.client.client-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.45))}
.card{background:var(--paper-2);padding:1.8rem 1.5rem;display:flex;flex-direction:column;justify-content:flex-end;border:1px solid var(--line-ink)}
.card-ink{background:var(--ink);border-color:transparent}
.card-ink p,.card-ink h3{color:var(--on-ink)}
.card-ink .card-k{color:var(--volt)}
.card-k{font-family:var(--font-m);font-size:.66rem;letter-spacing:.12em;color:var(--muted);font-weight:700;margin-bottom:.6rem}
.card h3{font-size:1.3rem;margin-bottom:.5rem}
.card p{font-size:.9rem;color:#43483f}
.card.c1{grid-area:c1}.card.c2{grid-area:c2}.card.c3{grid-area:c3}.card.c4{grid-area:c4}

/* ---------- secteur ---------- */
.secteur{background:var(--paper-2);border-top:1px solid var(--line-ink);border-bottom:1px solid var(--line-ink)}
.secteur-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.secteur-copy h2{margin-bottom:1rem}
.secteur-copy .sec-lead{margin-bottom:1.6rem}
.communes{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.8rem;max-width:60ch}
.communes span{background:var(--paper);border:1px solid var(--line-ink);padding:.42rem .8rem;border-radius:999px;font-size:.86rem;font-weight:500;color:#33383a}
.communes span:last-child{background:var(--ink);color:var(--volt);border-color:var(--ink);font-family:var(--font-m);font-size:.7rem;font-weight:700}
.secteur-copy .note{margin-bottom:1.6rem}
.secteur-fig{position:relative;border-radius:18px;overflow:hidden;box-shadow:0 40px 70px -45px rgba(0,0,0,.35)}
.secteur-fig img{width:100%;height:clamp(320px,42vw,500px);object-fit:cover}
.secteur-fig figcaption{display:flex;align-items:center;gap:.8rem;margin-top:.9rem}
.secteur-fig figcaption span:last-child{font-size:.86rem;color:var(--muted)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(2rem,5vw,4rem);align-items:start}
.faq-list{border-top:1px solid var(--line-ink)}
details{border-bottom:1px solid var(--line-ink)}
summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.3rem 0;font-family:var(--font-d);font-weight:700;font-size:1.12rem}
summary::-webkit-details-marker{display:none}
summary .plus{position:relative;width:18px;height:18px;flex:none}
summary .plus::before,summary .plus::after{content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .2s}
summary .plus::before{left:2px;right:2px;top:8px;height:2px}
summary .plus::after{top:2px;bottom:2px;left:8px;width:2px}
details[open] summary{color:#000}
details[open] summary .plus::after{transform:scaleY(0)}
details p{padding:0 0 1.4rem;color:var(--muted);max-width:62ch}

/* ---------- devis ---------- */
.devis{background:var(--ink);color:var(--on-ink);padding:clamp(3.5rem,8vw,6rem) 0}
.devis-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.devis .kicker.light{margin-bottom:1.1rem}
.devis h2{color:var(--on-ink);margin-bottom:1.2rem}
.devis-copy p:last-child{color:var(--on-ink-dim);max-width:50ch}
.devis-cta{display:flex;flex-direction:column;gap:1.4rem}
.devis-cta .btn{text-align:center}
.devis-mini{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;border-top:1px solid var(--line-paper);padding-top:1.4rem}
.devis-mini>div span{display:block;font-family:var(--font-m);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:var(--volt);margin-bottom:.35rem;font-weight:700}
.devis-mini strong{display:block;font-size:.95rem;color:var(--on-ink);font-weight:600;line-height:1.4}
.mini-note{font-size:.82rem;color:var(--on-ink-dim)}

/* ---------- footer ---------- */
.footer{background:#0e1112;color:var(--on-ink);padding:3.5rem 0 calc(var(--callbar-h) + 4rem)}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding-bottom:2.2rem;border-bottom:1px solid var(--line-paper);margin-bottom:2.4rem}
.footer .brand-text small{color:var(--on-ink-dim)}
.footer-tel{font-family:var(--font-d);font-weight:900;font-size:1.6rem;letter-spacing:.01em;color:var(--volt)}
.footer-tel:hover{color:#fff}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2.5rem;margin-bottom:2.8rem}
.footer h4{font-family:var(--font-m);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--on-ink-dim);margin-bottom:1.1rem;font-weight:700}
.footer ul li{font-size:.92rem;margin-bottom:.6rem;color:#c8ccc0}
.footer ul a{transition:color .2s}
.footer ul a:hover{color:var(--volt)}
.footer-legal{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;border-top:1px solid var(--line-paper);padding-top:1.5rem;font-size:.76rem;color:#868c80}
.footer-legal .credit{font-style:normal}

/* ---------- mobile call bar ---------- */
.callbar{
  position:fixed;left:0;right:0;bottom:0;z-index:150;display:none;
  height:var(--callbar-h);grid-template-columns:1.25fr 1fr;gap:0;
  border-top:1px solid rgba(0,0,0,.12);box-shadow:0 -10px 30px -20px rgba(0,0,0,.4);
}
.callbar-call{background:var(--volt);color:var(--ink);font-family:var(--font-d);font-weight:900;font-size:1.25rem;display:flex;align-items:center;justify-content:center;gap:.6rem}
.callbar-call span{width:16px;height:16px;border:2px solid currentColor;border-radius:3px;position:relative}
.callbar-devis{background:var(--ink);color:var(--on-ink);font-family:var(--font-d);font-weight:800;font-size:1.05rem;display:flex;align-items:center;justify-content:center}

/* =========================================================================
   RESPONSIVE
   ========================================================================= */
@media (max-width:1120px){
  .svc-grid{grid-template-columns:repeat(3,1fr)}
  .clients-grid{grid-template-columns:repeat(2,1fr);grid-template-areas:"img img" "c1 c2" "c3 c4"}
  .client.client-img{min-height:320px}
}
@media (max-width:980px){
  .nav{display:none}
  .header-tel{display:none}
  .header-actions{margin-left:auto}
  .hero-grid,.methode-grid,.secteur-grid,.devis-grid,.faq-wrap{grid-template-columns:1fr}
  .methode-photo,.secteur-fig{position:static}
  .hero-fig{order:-1;max-width:640px;margin-inline:auto;width:100%}
  .proof-grid{grid-template-columns:repeat(2,1fr);gap:1.5rem}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .clients-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .svc-grid{grid-template-columns:1fr 1fr}
  .svc{min-height:0;padding:1.3rem 1.1rem}
  .svc h3{font-size:1.1rem}
  .clients-grid{grid-template-columns:1fr;grid-template-areas:"img" "c1" "c2" "c3" "c4"}
  .client.client-img{min-height:240px}
  .proof-grid{grid-template-columns:1fr 1fr;gap:1.2rem}
  .proof-item{border-left-width:3px}
  .devis-mini{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr;gap:2rem}
  .footer-top{flex-direction:column;align-items:flex-start}
  .header-actions .btn{padding:.8rem 1.05rem;font-size:.95rem}
  .brand-text small{display:none}
}
@media (max-width:480px){
  .svc-grid{grid-template-columns:1fr}
}
/* show call bar only on touch-size / narrow screens */
@media (max-width:860px){
  .callbar{display:grid}
  .footer{padding-bottom:calc(var(--callbar-h) + 3.5rem)}
  .site-header{position:sticky}
  main{padding-bottom:0}
}

/* ---------- focus ---------- */
a:focus-visible,summary:focus-visible{outline:3px solid var(--volt-d);outline-offset:2px;border-radius:4px}

/* reduce motion */
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important}
}