/* Tectis — toiture belge : ardoise, zinc, jaune de sécurité. Mise en page alignée à gauche, une seule pièce forte : le toit avant/après du hero. */
@font-face{font-family:"Archivo";src:url("fonts/archivo.woff2") format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"Plex";src:url("fonts/plex-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex";src:url("fonts/plex-600.woff2") format("woff2");font-weight:600;font-display:swap}
:root{
  --ink:#16222b;--slate:#2b3d49;--muted:#51626c;--zinc:#eef1f1;--paper:#fff;--line:#cdd6d8;
  --signal:#f5b800;--signal-dark:#d99f00;--moss:#5d7d2b;--tile:#b4553a;--ok:#1f6b45;--err:#a3271c;
  --display:"Archivo","Arial Narrow",Arial,sans-serif;--body:"Plex","Segoe UI",system-ui,sans-serif;
  --wrap:72rem;--gut:max(1.1rem,env(safe-area-inset-left,0px));
}
*,*::before,*::after{box-sizing:border-box}
html{font-size:106.25%;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--zinc);color:var(--ink);font-family:var(--body);line-height:1.62}
img,svg{max-width:100%}
a{color:inherit;text-underline-offset:.18em;text-decoration-thickness:.08em}
a:hover{text-decoration-thickness:.14em}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px;border-radius:2px}
h1,h2,h3{font-family:var(--display);line-height:1.08;margin:0;text-wrap:balance;letter-spacing:-.015em}
h1{font-size:clamp(2.1rem,5.2vw,3.7rem);font-weight:800;font-stretch:90%}
h2{font-size:clamp(1.45rem,3vw,2.05rem);font-weight:750}
h3{font-size:1.14rem;font-weight:700;letter-spacing:0;line-height:1.25}
p{margin:0}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:var(--signal);padding:.5rem 1rem;z-index:99}

/* En-tête */
.top{background:var(--ink);color:#fff}
.top .wrap{display:flex;align-items:center;gap:1.2rem;min-height:4.2rem;flex-wrap:wrap;padding-block:.5rem}
.logo{display:inline-flex;align-items:center;gap:.5rem;text-decoration:none;font-family:var(--display);font-weight:800;font-size:1.45rem;letter-spacing:-.02em}
.logo svg{width:1.9rem;height:1.9rem;flex:none}
.nav{display:flex;gap:1.15rem;margin-left:auto;flex-wrap:wrap;font-size:.92rem}
.nav a{text-decoration:none;padding-block:.35rem;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current]{border-bottom-color:var(--signal)}
.top-end{display:flex;align-items:center;gap:.9rem;font-size:.92rem}
.lang{text-decoration:none;border:1px solid #5b6d78;padding:.2rem .5rem;border-radius:3px;font-weight:600}
.tel{font-weight:600;white-space:nowrap;text-decoration:none}
.menu{display:none}
@media (max-width:62rem){
  .nav{display:none;order:9;width:100%;flex-direction:column;gap:0;margin:0;padding-bottom:.6rem}
  .nav a{padding:.7rem 0;border-bottom:1px solid #33454f}
  .menu{display:block;margin-left:auto;background:none;border:1px solid #5b6d78;color:#fff;font:600 .92rem var(--body);padding:.45rem .8rem;border-radius:3px;cursor:pointer}
  .top.open .nav{display:flex}
  .top-end .tel{display:none}
}

/* Boutons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font:700 1rem var(--display);padding:.85rem 1.35rem;border-radius:4px;text-decoration:none;border:2px solid var(--ink);cursor:pointer;line-height:1.2;text-align:center}
.btn-main{background:var(--signal);color:var(--ink);border-color:var(--signal)}
.btn-main:hover{background:var(--signal-dark);border-color:var(--signal-dark)}
.btn-line{background:transparent;color:inherit}
.btn-line:hover{background:var(--ink);color:#fff}
.on-dark .btn-line{border-color:#fff}.on-dark .btn-line:hover{background:#fff;color:var(--ink)}
.btn-sm{padding:.5rem .9rem;font-size:.9rem}
.actions{display:flex;flex-wrap:wrap;gap:.8rem}

/* Hero */
.hero{background:var(--ink);color:#fff;padding-block:clamp(2rem,5vw,4rem) clamp(2.5rem,6vw,4.5rem)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
.hero-text{display:grid;gap:1.3rem;min-width:0}
.hero .lead{font-size:1.14rem;color:#d6dee1;max-width:34rem}
.facts{display:flex;flex-wrap:wrap;gap:.5rem 1.6rem;list-style:none;padding:0;margin:0;font-size:.95rem;color:#d6dee1}
.facts li{display:flex;gap:.5rem;align-items:baseline}
.facts li::before{content:"";width:.55rem;height:.55rem;background:var(--signal);flex:none;transform:translateY(-.05rem) rotate(45deg)}
@media (max-width:54rem){.hero .wrap{grid-template-columns:1fr}}

/* Toit avant / après */
.roof{--cut:52%;position:relative;aspect-ratio:5/4;border-radius:6px;overflow:hidden;background:#7d3524;max-width:100%;touch-action:pan-y;user-select:none}
.roof-layer{position:absolute;inset:0;background-size:96px 64px}
.roof-clean{background-color:#b4553a;background-image:var(--tiles)}
.roof-dirty{background-color:#5b4a3c;background-image:var(--moss),var(--tiles-dark);background-size:384px 320px,96px 64px;clip-path:inset(0 calc(100% - var(--cut)) 0 0)}
.roof-bar{position:absolute;top:0;bottom:0;left:var(--cut);width:4px;background:var(--signal);transform:translateX(-2px);pointer-events:none}
.roof-bar::after{content:"";position:absolute;top:50%;left:50%;width:2.6rem;height:2.6rem;border-radius:50%;background:var(--signal);transform:translate(-50%,-50%);box-shadow:0 2px 10px rgba(0,0,0,.45)}
.roof-bar::before{content:"‹ ›";position:absolute;top:50%;left:50%;transform:translate(-50%,-54%);z-index:1;color:var(--ink);font:800 1.15rem var(--display);white-space:nowrap}
.roof input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.roof input:focus-visible + .roof-bar::after{outline:3px solid #fff;outline-offset:3px}
.roof-tag{position:absolute;bottom:.7rem;background:rgba(22,34,43,.88);color:#fff;font:600 .8rem var(--body);padding:.25rem .6rem;border-radius:3px;pointer-events:none}
.roof-tag.l{left:.7rem}.roof-tag.r{right:.7rem}
.roof-note{font-size:.82rem;color:#aebbc1;margin-top:.5rem}

/* Sections */
.sec{padding-block:clamp(2.4rem,5.5vw,4.2rem)}
.sec-paper{background:var(--paper)}
.sec-dark{background:var(--ink);color:#fff}
.sec-head{display:grid;gap:.7rem;max-width:44rem;margin-bottom:1.8rem}
.sec-head p{color:var(--muted);font-size:1.05rem}
.sec-dark .sec-head p{color:#c7d2d6}
.crumbs{font-size:.85rem;color:#aebbc1;display:flex;flex-wrap:wrap;gap:.4rem;list-style:none;padding:0;margin:0}
.crumbs li+li::before{content:"/";margin-right:.4rem;color:#6d808b}
.crumbs a{color:inherit}
.page-head{background:var(--ink);color:#fff;padding-block:1.6rem clamp(2rem,4vw,3rem)}
.page-head .wrap{display:grid;gap:1.1rem}
.page-head .lead{font-size:1.12rem;color:#d6dee1;max-width:44rem}

/* Prose */
.cols{display:grid;grid-template-columns:minmax(0,1fr) 19rem;gap:clamp(1.5rem,4vw,3.5rem);align-items:start}
@media (max-width:58rem){.cols{grid-template-columns:1fr}}
.prose{display:grid;gap:1.05rem;max-width:43rem;min-width:0}
.prose h2{margin-top:1.5rem}.prose h2:first-child{margin-top:0}
.prose h3{margin-top:.6rem}
.prose ul,.prose ol{margin:0;padding-left:1.2rem;display:grid;gap:.4rem}
.prose li::marker{color:var(--tile);font-weight:600}
.prose strong{font-weight:600}
.note{border-left:4px solid var(--signal);background:var(--zinc);padding:.9rem 1.1rem;font-size:.97rem}
.sec-paper .note{background:var(--zinc)}
.warn{border-left-color:var(--err)}
.side{position:sticky;top:1rem;background:var(--ink);color:#fff;padding:1.4rem;border-radius:6px;display:grid;gap:.9rem}
.side h2{font-size:1.25rem}
.side p{font-size:.95rem;color:#d6dee1}
.side .price{font:800 1.7rem var(--display);color:var(--signal);font-variant-numeric:tabular-nums}
.side .btn{width:100%}
.side small{color:#aebbc1;font-size:.8rem}
@media (max-width:58rem){.side{position:static}}

/* Liste de services */
.svc{display:grid;grid-template-columns:repeat(auto-fit,minmax(12.5rem,1fr));gap:0;border-top:2px solid var(--ink);list-style:none;padding:0;margin:0}
.svc li{border-bottom:1px solid var(--line);padding:1.3rem 1.3rem 1.3rem 0;display:grid;gap:.5rem;align-content:start}
.svc a{text-decoration:none}
.svc h3{font-size:1.25rem}
.svc a:hover h3{text-decoration:underline}
.svc p{color:var(--muted);font-size:.96rem}
.svc .from{font-weight:600;font-variant-numeric:tabular-nums;color:var(--ink)}

/* Étapes (vraie séquence) */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(13.5rem,1fr));gap:1.6rem;counter-reset:s}
.steps li{counter-increment:s;display:grid;gap:.4rem;align-content:start;border-top:2px solid var(--signal);padding-top:.9rem}
.steps li::before{content:counter(s);font:800 1.5rem var(--display);color:var(--signal)}
.sec-paper .steps li::before,.sec:not(.sec-dark) .steps li::before{color:var(--tile)}
.sec:not(.sec-dark) .steps li{border-top-color:var(--ink)}
.steps p{font-size:.96rem;color:inherit;opacity:.88}

/* Tableaux */
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:6px;background:var(--paper)}
table{border-collapse:collapse;width:100%;font-size:.97rem;font-variant-numeric:tabular-nums}
th,td{text-align:left;padding:.75rem 1rem;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--ink);color:#fff;font:700 .92rem var(--display)}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
tbody th{font-weight:600}
td.num{white-space:nowrap;font-weight:600}

/* Calculateur */
.calc{background:var(--paper);border:2px solid var(--ink);border-radius:6px;padding:1.4rem;display:grid;gap:1rem;max-width:43rem}
.calc-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:1rem}
.calc output{display:block;font:800 clamp(1.5rem,4vw,2.1rem) var(--display);font-variant-numeric:tabular-nums}
.calc small{color:var(--muted)}

/* Formulaires */
label{display:grid;gap:.3rem;font-weight:600;font-size:.93rem}
input,select,textarea{font:400 1rem var(--body);padding:.7rem .8rem;border:1.5px solid #8795a0;border-radius:4px;background:#fff;color:var(--ink);width:100%}
input:focus,select:focus,textarea:focus{outline:3px solid var(--signal);outline-offset:1px;border-color:var(--ink)}
textarea{min-height:7rem;resize:vertical}
.form{display:grid;gap:1rem;max-width:43rem}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:1rem}
.checks{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem;border:0;padding:0;margin:0}
.checks legend{font-weight:600;font-size:.93rem;padding:0;margin-bottom:.4rem}
.checks label{display:flex;align-items:center;gap:.45rem;font-weight:400}
.checks input{width:1.15rem;height:1.15rem}
.hp{position:absolute;left:-9999px}
.form-msg{padding:.9rem 1.1rem;border-radius:4px;font-weight:600}
.form-msg.ok{background:#e3f1e9;color:var(--ok)}
.form-msg.err{background:#f8e5e2;color:var(--err)}
.hint{font-size:.85rem;color:var(--muted);font-weight:400}

/* FAQ */
.faq{display:grid;gap:0;max-width:46rem;border-top:2px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:1rem 2rem 1rem 0;font:700 1.06rem var(--display);list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:.2rem;top:.8rem;font-size:1.4rem;font-weight:500}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 0 1.2rem;display:grid;gap:.7rem;color:#2c3a43}

/* Régions */
.regions{display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:.7rem;list-style:none;padding:0;margin:0}
.regions a{display:block;padding:.9rem 1rem;background:var(--paper);border:1px solid var(--line);border-radius:4px;text-decoration:none;font-weight:600}
.regions a:hover{border-color:var(--ink)}
.regions span{display:block;font-weight:400;font-size:.86rem;color:var(--muted)}
.sec-dark .regions a{background:#22323d;border-color:#3a4c57;color:#fff}.sec-dark .regions span{color:#b9c6cc}
.sec-dark .regions a:hover{border-color:var(--signal)}
.towns{display:flex;flex-wrap:wrap;gap:.4rem;list-style:none;padding:0;margin:0}
.towns li{background:var(--zinc);border:1px solid var(--line);padding:.2rem .65rem;border-radius:99px;font-size:.9rem}

/* Bandeau d'appel */
.cta{background:var(--signal);color:var(--ink);padding-block:clamp(2rem,4vw,3rem)}
.cta .wrap{display:flex;flex-wrap:wrap;gap:1.2rem 2.5rem;align-items:center;justify-content:space-between}
.cta h2{max-width:30rem}
.cta p{max-width:34rem;margin-top:.5rem}
.cta .btn-main{background:var(--ink);color:#fff;border-color:var(--ink)}
.cta .btn-main:hover{background:var(--slate);border-color:var(--slate)}

/* Pied de page */
.foot{background:var(--ink);color:#c7d2d6;padding-block:2.6rem 5.5rem;font-size:.92rem}
.foot .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(12.5rem,1fr));gap:2rem}
.foot h2{font-size:1rem;color:#fff;margin-bottom:.7rem;letter-spacing:0}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:.35rem}
.foot a{color:inherit}
.foot .logo{color:#fff;margin-bottom:.6rem}
.legal{border-top:1px solid #33454f;margin-top:2rem;padding-top:1.2rem;font-size:.84rem}
@media (min-width:48rem){.foot{padding-bottom:2.6rem}}

/* Barre mobile */
.mbar{position:fixed;left:0;right:0;bottom:0;display:grid;grid-template-columns:1fr 1.4fr;gap:.5rem;padding:.55rem max(.7rem,env(safe-area-inset-right,0px)) calc(.55rem + env(safe-area-inset-bottom,0px)) max(.7rem,env(safe-area-inset-left,0px));background:var(--ink);z-index:20;border-top:1px solid #33454f}
.mbar .btn{padding:.7rem .5rem;font-size:.95rem}
.mbar .btn-line{border-color:#fff;color:#fff}
@media (min-width:48rem){.mbar{display:none}}

/* Sélecteur de langue (racine) */
.gate{min-height:100svh;display:grid;place-items:center;background:var(--ink);color:#fff;padding:2rem var(--gut)}
.gate-in{display:grid;gap:1.6rem;max-width:34rem}
.gate .actions .btn{flex:1 1 12rem}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.top,.mbar,.cta,.foot,.side{display:none}body{background:#fff}}