/* Layout : bandeaux pleine largeur (photo, bleu marine, blanc) ; rouge pour l'action, bleu pour la structure ; un bouton d'appel toujours à portée. */
:root{
  --bg:#F3F6FB;        /* blanc bleuté */
  --surface:#FFFFFF;
  --ink:#0B1E3F;       /* bleu marine */
  --muted:#4E5C74;
  --line:#D5DDEA;
  --zinc:#9AAACA;
  --tuile:#E1262D;     /* rouge vif : appels à l'action */
  --tuile-ink:#FFFFFF;
  --blue:#1846B8;      /* bleu roi : repères, titres de rubrique */
  --band:#0B1E3F;      /* bandeau bleu marine */
  --band-fg:#EEF2FA;
  --band-muted:#A9B7D3;
  --display:"Barlow Condensed","Arial Narrow",Impact,sans-serif;
  --body:"Barlow","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --r:6px;
  --w:1180px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#08142A;--surface:#0F1E3A;--ink:#E8EEF9;--muted:#9FAECB;--line:#22355A;--zinc:#4D6491;
  --tuile:#F0353C;--tuile-ink:#FFFFFF;--blue:#7DA2FF;--band:#050D1E;--band-fg:#E8EEF9;--band-muted:#92A3C6;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#08142A;--surface:#0F1E3A;--ink:#E8EEF9;--muted:#9FAECB;--line:#22355A;--zinc:#4D6491;
  --tuile:#F0353C;--tuile-ink:#FFFFFF;--blue:#7DA2FF;--band:#050D1E;--band-fg:#E8EEF9;--band-muted:#92A3C6;color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--band)}
a{color:inherit}
img{max-width:100%;display:block}
h1,h2,h3{font-family:var(--display);text-transform:uppercase;line-height:1.02;letter-spacing:.01em;text-wrap:balance;margin:0}
p{margin:0}
.wrap{max-width:var(--w);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.eyebrow{font-family:var(--display);font-weight:700;font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}
:focus-visible{outline:3px solid var(--tuile);outline-offset:3px}

/* Joints debout : le motif du zinc */
.seam{height:14px;background:repeating-linear-gradient(90deg,var(--zinc) 0 2px,transparent 2px 46px),linear-gradient(var(--line),var(--line));background-size:auto,100% 1px;background-repeat:repeat,no-repeat;background-position:0 0,0 100%;opacity:.7}

/* Boutons */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;font-size:20px;letter-spacing:.04em;text-transform:uppercase;text-decoration:none;padding:12px 22px;border-radius:var(--r);border:2px solid transparent;cursor:pointer;white-space:nowrap}
.btn-call{background:var(--tuile);color:var(--tuile-ink)}
.btn-call:hover{filter:brightness(1.08)}
.btn-ghost{border-color:currentColor;background:transparent;color:inherit}
.btn svg{width:20px;height:20px;flex:none}

/* En-tête */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--band);color:var(--band-fg)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:10px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;min-width:0}
.logo svg{width:42px;height:34px;flex:none}
.logo b{font-family:var(--display);font-weight:800;font-size:24px;letter-spacing:.03em;text-transform:uppercase;line-height:1}
.logo small{display:block;font-family:var(--display);font-size:13px;letter-spacing:.16em;color:var(--band-muted);text-transform:uppercase}
nav.links{display:flex;gap:22px;font-family:var(--display);font-weight:600;font-size:17px;letter-spacing:.06em;text-transform:uppercase}
nav.links a{text-decoration:none;color:var(--band-muted)}
nav.links a:hover{color:var(--band-fg)}
header.top .btn{font-size:18px;padding:9px 16px}
@media (max-width:900px){nav.links{display:none}}
@media (max-width:520px){header.top .btn .t-long{display:none}.logo small{display:none}}

/* Hero */
.hero{position:relative;color:#fff;background:#0B1E3F}
.hero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 40%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,18,42,.88) 0%,rgba(6,18,42,.62) 48%,rgba(6,18,42,.15) 100%)}
.hero .wrap{position:relative;z-index:1;padding-block:clamp(64px,10vw,128px) clamp(56px,8vw,104px)}
.hero .eyebrow{color:#9DB8FF}
[hidden]{display:none!important}
.hero h1{font-size:clamp(44px,6.6vw,88px);font-weight:800;max-width:15ch;margin-top:14px}
.hero h1 span{color:#FF5A60}
.hero p.lead{font-size:clamp(18px,2vw,21px);max-width:44ch;margin-top:20px;color:#E3E9F5}
.hero .ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;align-items:center}
.hero .ctas .btn-call{font-size:24px;padding:14px 26px}
.hero .ctas .btn-call{background:#E1262D}
.num{font-variant-numeric:tabular-nums;letter-spacing:.06em}
.copy{font:600 14px var(--body);background:none;border:0;color:inherit;text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:6px 2px;opacity:.85}

/* Garanties */
.promises{background:var(--surface);border-bottom:1px solid var(--line)}
.promises ul{list-style:none;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.promises li{padding:22px 18px;display:flex;gap:14px;align-items:flex-start;border-left:1px solid var(--line)}
.promises li:first-child{border-left:0;padding-left:0}
.promises svg{width:30px;height:30px;flex:none;color:var(--tuile);margin-top:2px}
.promises b{display:block;font-family:var(--display);font-size:21px;text-transform:uppercase;letter-spacing:.02em;line-height:1.1}
.promises span{font-size:15px;color:var(--muted)}
@media (max-width:900px){.promises ul{grid-template-columns:1fr 1fr}.promises li:nth-child(3){border-left:0;padding-left:0}.promises li{border-top:1px solid var(--line)}.promises li:nth-child(-n+2){border-top:0}}
@media (max-width:520px){.promises ul{grid-template-columns:1fr}.promises li{border-left:0;padding-left:0;border-top:1px solid var(--line)}.promises li:first-child{border-top:0}}

section{padding-block:clamp(64px,8vw,104px)}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px 48px;align-items:end;margin-bottom:44px}
.sec-head h2{font-size:clamp(38px,5vw,62px);font-weight:800;margin-top:8px}
.sec-head p{color:var(--muted);max-width:52ch}
@media (max-width:800px){.sec-head{grid-template-columns:1fr}}

/* Services */
.services{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.svc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;min-width:0}
.svc img{width:100%;aspect-ratio:4/3;object-fit:cover}
.svc .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px}
.svc h3{font-size:28px;font-weight:700}
.svc p{color:var(--muted);font-size:16px}
.svc .terms{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.svc .terms span{font-family:var(--display);font-weight:600;font-size:14px;letter-spacing:.06em;text-transform:uppercase;border:1px solid var(--line);border-radius:3px;padding:2px 8px;color:var(--muted)}
@media (max-width:980px){.services{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.services{grid-template-columns:1fr}}

/* Bandeau ardoise : avant / après */
.band{background:var(--band);color:var(--band-fg)}
.band .sec-head p{color:var(--band-muted)}
.ba{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px}
.ba figure{margin:0;position:relative;border-radius:var(--r);overflow:hidden}
.ba img{width:100%;aspect-ratio:4/3;object-fit:cover}
.ba figcaption{position:absolute;left:14px;top:14px;font-family:var(--display);font-weight:700;font-size:17px;letter-spacing:.1em;text-transform:uppercase;padding:4px 12px;border-radius:3px;background:rgba(6,18,42,.8);color:#fff}
.ba figure.after figcaption{background:#E1262D}
.ba-note{margin-top:20px;color:var(--band-muted);font-size:16px;max-width:70ch}
@media (max-width:700px){.ba{grid-template-columns:1fr}}
.aerial{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:22px}
.aerial img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r)}
@media (max-width:700px){.aerial{grid-template-columns:1fr 1fr}.aerial img:last-child{display:none}}

/* Réalisations */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.chip{font-family:var(--display);font-weight:700;font-size:17px;letter-spacing:.06em;text-transform:uppercase;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);padding:7px 16px;border-radius:40px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--blue);color:#fff;border-color:var(--blue)}
.gallery{columns:4 240px;column-gap:14px}
.gallery button{all:unset;display:block;cursor:zoom-in;margin-bottom:14px;break-inside:avoid;border-radius:var(--r);overflow:hidden;position:relative;width:100%}
.gallery button:focus-visible{outline:3px solid var(--tuile);outline-offset:2px}
.gallery img{width:100%;height:auto;transition:transform .4s ease}
.gallery button:hover img{transform:scale(1.03)}
.gallery .tag{position:absolute;left:10px;bottom:10px;font-family:var(--display);font-weight:700;font-size:14px;letter-spacing:.08em;text-transform:uppercase;background:rgba(6,18,42,.78);color:#fff;padding:2px 9px;border-radius:3px}

/* Déroulé */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:s;border-top:2px solid var(--ink)}
.steps li{padding:22px 22px 4px 0;counter-increment:s;min-width:0}
.steps li::before{content:counter(s);display:block;font-family:var(--display);font-weight:800;font-size:54px;line-height:1;color:var(--blue);margin-bottom:10px}
.steps h3{font-size:25px;font-weight:700;margin-bottom:6px}
.steps p{color:var(--muted);font-size:16px}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr;gap:12px 24px}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* Zone */
.zone{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:48px;align-items:center}
.zone img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r)}
.towns{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;list-style:none;padding:0}
.towns li{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:4px 11px;font-size:15px}
.towns li.home{background:var(--tuile);color:var(--tuile-ink);border-color:var(--tuile);font-weight:600}
@media (max-width:800px){.zone{grid-template-columns:1fr}}

/* Contact */
.contact{background:var(--tuile);color:var(--tuile-ink)}
.contact .wrap{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:40px;align-items:center}
.contact h2{font-size:clamp(40px,5.6vw,70px);font-weight:800}
.contact p{margin-top:14px;font-size:19px;max-width:46ch;opacity:.95}
.callcard{background:var(--band);color:var(--band-fg);border-radius:var(--r);padding:30px 28px;display:flex;flex-direction:column;gap:14px}
.callcard .lbl{font-family:var(--display);font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--band-muted);font-size:15px}
.callcard .big{font-family:var(--display);font-weight:800;font-size:clamp(40px,5vw,56px);line-height:1;user-select:all}
.callcard .row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.callcard .btn-call{background:#E1262D;color:#fff}
.callcard small{color:var(--band-muted);font-size:14px}
@media (max-width:800px){.contact .wrap{grid-template-columns:1fr}}

footer{background:var(--band);color:var(--band-muted);font-size:15px}

/* Bouton d'appel flottant (mobile) */
.fab{position:fixed;z-index:55;right:max(16px,calc(env(safe-area-inset-right,0px) + 12px));bottom:calc(16px + env(safe-area-inset-bottom,0px));box-shadow:0 8px 24px rgba(0,0,0,.28);display:none}
@media (max-width:760px){.fab{display:inline-flex}}

/* Visionneuse */
.lb{position:fixed;inset:0;z-index:80;background:rgba(4,12,28,.94);display:flex;align-items:center;justify-content:center;padding:calc(56px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) calc(24px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.lb img{max-height:100%;max-width:100%;object-fit:contain;border-radius:4px}
.lb button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:50%;width:48px;height:48px;font-size:26px;cursor:pointer;line-height:1}
.lb .x{top:calc(10px + env(safe-area-inset-top,0px));right:max(12px,env(safe-area-inset-right,0px))}
.lb .p{left:max(12px,env(safe-area-inset-left,0px));top:50%}
.lb .n{right:max(12px,env(safe-area-inset-right,0px));top:50%}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(84px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:40px;font-weight:600;z-index:90}