@font-face{font-family:"Bricolage";src:url(fonts/bricolage-grotesque-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Bricolage";src:url(fonts/bricolage-grotesque-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Bricolage";src:url(fonts/bricolage-grotesque-latin-800-normal.woff2) format("woff2");font-weight:800;font-display:swap}
@font-face{font-family:"Plex";src:url(fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex";src:url(fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}

:root{
  /* Béton brut, brique, acier */
  --concrete:#d9d7d1; --concrete-2:#c4c2bb; --paper:#ecebe6; --ink:#1c1d1f; --steel:#2d2f33;
  --brick:#b0462b; --brick-dark:#8f361f; --brick-light:#e5795a;
  --head:"Bricolage","Arial Black",system-ui,sans-serif;
  --body:"Plex","Segoe UI",system-ui,sans-serif;
  --pad:clamp(20px,5vw,64px); --max:1180px;
  --grain:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='300'%20height='300'%3E%3Cfilter%20id='g'%20x='0'%20y='0'%20width='100%25'%20height='100%25'%3E%3CfeTurbulence%20type='fractalNoise'%20baseFrequency='.85'%20numOctaves='3'%20stitchTiles='stitch'/%3E%3CfeColorMatrix%20values='0%200%200%200%20.1%20%200%200%200%200%20.1%20%200%200%200%200%20.1%20%200%200%200%20.09%200'/%3E%3C/filter%3E%3Crect%20width='100%25'%20height='100%25'%20filter='url(%23g)'/%3E%3C/svg%3E");
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{overflow-x:clip;margin:0;background-color:var(--paper);background-image:var(--grain);color:var(--ink);font:400 17.5px/1.6 var(--body);-webkit-text-size-adjust:100%}
h1,h2,h3{font-family:var(--head);margin:0}
a{color:inherit}
:focus-visible{outline:3px solid var(--brick);outline-offset:3px}
.todo{background:rgba(176,70,43,.16);border-bottom:1px dotted var(--brick-dark)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Barre de progression en haut de page */
.progress{position:fixed;left:0;top:0;height:4px;width:100%;background:var(--brick);transform-origin:0 50%;transform:scaleX(0);z-index:50}

.mock{background:var(--ink);color:#fff;padding:9px var(--pad);font-size:.85rem;line-height:1.45}
.mock p{margin:0}

.top{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:16px;padding:12px var(--pad);background:rgba(236,235,230,.92);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-bottom:2px solid transparent;transition:border-color .2s,padding .2s}
.top.compact{border-bottom-color:var(--ink);padding-top:8px;padding-bottom:8px}
.brand{font:800 1.4rem/1 var(--head);text-decoration:none;margin-right:auto}
.brand b{color:var(--brick)}
.nav{display:none}
.top-tel{font:600 .95rem var(--body);text-decoration:none;min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:2px solid var(--ink)}
.top-tel:hover{background:var(--ink);color:var(--paper)}
@media (min-width:900px){
  .nav{display:flex;gap:26px;margin-right:12px}
  .nav a{font-weight:600;text-decoration:none;padding:6px 0;border-bottom:2px solid transparent}
  .nav a:hover{border-bottom-color:var(--brick)}
}

.btn{display:inline-flex;align-items:center;justify-content:center;min-height:54px;padding:0 28px;background:var(--brick);color:#fff;font:600 1.02rem var(--body);text-decoration:none;border:2px solid var(--brick);border-radius:0;cursor:pointer;transition:background .15s,transform .15s}
.btn:hover{background:var(--brick-dark);border-color:var(--brick-dark);transform:translateY(-2px)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* Hero */
.hero{max-width:var(--max);margin:0 auto;padding:clamp(36px,8vh,84px) var(--pad) clamp(48px,9vh,96px)}
.kicker{margin:0 0 16px;font:600 .8rem var(--body);letter-spacing:.16em;text-transform:uppercase;color:#55575b}
h1{font-weight:800;font-size:clamp(2.7rem,11.5vw,7.6rem);line-height:.95;letter-spacing:-.03em}
h1 .w{display:block;overflow:hidden;padding-bottom:.06em}
h1 .w > span{display:block;animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
h1 .w:nth-child(2) > span{animation-delay:.12s;color:var(--brick)}
h1 .w:nth-child(3) > span{animation-delay:.24s}
@keyframes rise{from{transform:translateY(105%)}to{transform:none}}
.strip{display:flex;gap:4px;margin:clamp(24px,5vh,44px) 0 0;max-width:720px}
.strip i{flex:1;height:18px;background:var(--b);transform:scaleX(0);transform-origin:0 50%;animation:lay .35s ease-out both;animation-delay:calc(.5s + var(--i)*45ms)}
@keyframes lay{to{transform:scaleX(1)}}
.hero-sub{margin:20px 0 26px;font-size:1.15rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:0}
@media (prefers-reduced-motion:reduce){h1 .w > span,.strip i{animation:none;transform:none}}

/* Mur : se monte pendant le défilement */
.wall{position:relative;height:280vh;background:var(--ink);color:var(--paper)}
.wall-sticky{position:sticky;top:0;height:100svh;display:grid;grid-template-rows:auto 1fr;gap:18px;padding:84px var(--pad) 28px;max-width:var(--max);margin:0 auto}
.wall-text h2{font-weight:800;font-size:clamp(2rem,7vw,3.6rem);line-height:1;letter-spacing:-.02em;margin-bottom:10px}
.wall-text .kicker{color:var(--brick-light)}
.wall-text p{max-width:26em;margin:0 0 8px}
.count{font:600 1rem var(--body);color:var(--brick-light)}
.count b{font-family:var(--head);font-size:1.6rem}
.wall-grid{display:flex;flex-direction:column-reverse;gap:4px;min-height:0}
.course{flex:1;display:flex;gap:4px;min-height:0}
.brick{flex:1;background:var(--b);opacity:0;transform:translateY(-22px);transition:opacity .35s,transform .45s cubic-bezier(.2,.7,.2,1)}
.brick.half{flex:.5}
.course.on .brick{opacity:1;transform:none}
@media (min-width:860px){
  .wall-sticky{grid-template-rows:none;grid-template-columns:1fr 1.25fr;align-items:center;gap:clamp(28px,6vw,90px);padding-top:90px;padding-bottom:40px}
  .wall-grid{height:min(68svh,560px)}
}
@media (prefers-reduced-motion:reduce){.wall{height:auto}.wall-sticky{position:static;height:auto}.wall-grid{height:340px}.brick{transition:none}}

/* Métiers : onglets + schémas animés */
.metiers,.chantier,.realisations,.contact{max-width:var(--max);margin:0 auto;padding:clamp(80px,13vh,150px) var(--pad) 0}
h2{font-weight:800;font-size:clamp(2rem,6vw,3.4rem);line-height:1;letter-spacing:-.02em;margin-bottom:clamp(22px,4vh,40px)}
h3{font-weight:700;font-size:clamp(1.5rem,4vw,2rem);letter-spacing:-.01em;margin-bottom:10px}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:clamp(20px,4vh,36px)}
.tab{font:600 1rem var(--body);min-height:48px;padding:0 20px;border:2px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;transition:background .15s,color .15s}
.tab:hover{background:var(--concrete)}
.tab[aria-selected="true"]{background:var(--ink);color:var(--paper)}
.panel{display:grid;gap:22px;align-items:center}
.panel[hidden]{display:none}
.panel-text p{max-width:30em;margin:0 0 10px}
.draw{margin:0;color:var(--ink);background:var(--concrete);border:2px solid var(--ink);padding:14px}
.draw svg{display:block;width:100%;height:auto;max-height:340px}
.draw .lb{font-family:var(--body)}
@media (min-width:860px){.panel{grid-template-columns:1fr 1.1fr;gap:56px}}
.note{margin:18px 0 0;font-size:.9rem;color:#55575b}

@keyframes pop{from{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:none}}
@keyframes drawline{from{stroke-dasharray:640;stroke-dashoffset:640}to{stroke-dasharray:640;stroke-dashoffset:0}}
@keyframes fill{from{transform:scaleY(0)}to{transform:scaleY(1)}}
.panel:not([hidden]) .br{animation:pop .4s ease-out both;animation-delay:calc(var(--i)*35ms)}
.panel:not([hidden]) .form{animation:drawline .9s ease-out both}
.panel:not([hidden]) .stir{animation:drawline 1s ease-out .6s both}
.panel:not([hidden]) .bars{animation:pop .5s ease-out 1.4s both}
.concrete{transform-box:fill-box;transform-origin:50% 100%}
.panel:not([hidden]) .concrete{animation:fill 1.4s ease-in-out 1.9s both}
.panel:not([hidden]) .l5{animation:pop .5s ease-out .1s both}
.panel:not([hidden]) .l4{animation:pop .5s ease-out .5s both}
.panel:not([hidden]) .l3{animation:pop .5s ease-out .9s both}
.panel:not([hidden]) .l2{animation:pop .5s ease-out 1.3s both}
.panel:not([hidden]) .lb{animation:pop .5s ease-out 1.7s both}
@media (prefers-reduced-motion:reduce){.panel .a,.panel .concrete{animation:none!important}}

/* Assistant de demande */
.lead{margin:-14px 0 28px;max-width:32em}
.est{display:grid;gap:22px}
fieldset{border:0;margin:0 0 20px;padding:0}
legend{font:700 .85rem var(--body);letter-spacing:.1em;text-transform:uppercase;padding:0;margin-bottom:10px;color:#3c3e42}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{cursor:pointer;margin:0;font:inherit;letter-spacing:0;text-transform:none;color:inherit}
.chips input{position:absolute;opacity:0;width:1px;height:1px}
.chips span{display:inline-flex;align-items:center;min-height:46px;padding:0 18px;border:2px solid var(--ink);font-weight:600;transition:background .15s,color .15s,transform .15s}
.chips label:hover span{background:var(--concrete)}
.chips input:checked + span{background:var(--brick);border-color:var(--brick);color:#fff;transform:translateY(-2px)}
.chips input:focus-visible + span{outline:3px solid var(--ink);outline-offset:3px}
.e-loc{display:block;font:700 .85rem var(--body);letter-spacing:.1em;text-transform:uppercase;margin:8px 0 8px;color:#3c3e42}
input[type=text],input[type=tel],textarea{font:inherit;padding:12px;border:2px solid var(--ink);border-radius:0;background:#fff;color:var(--ink);width:100%}
input[type=text]:focus,input[type=tel]:focus,textarea:focus{outline:3px solid var(--brick);outline-offset:0}
.est-out{background:var(--ink);color:var(--paper);padding:26px;align-self:start}
.est-label{margin:0 0 10px;font:600 .8rem var(--body);letter-spacing:.16em;text-transform:uppercase;color:var(--brick-light)}
.est-msg{margin:0 0 22px;font:600 1.15rem/1.5 var(--head);min-height:6em}
@media (min-width:860px){.est{grid-template-columns:1.1fr 1fr;gap:60px;align-items:start}}

/* Réalisations */
.real-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:clamp(22px,4vh,40px)}
.real-head h2{margin:0}
.ctrl{display:flex;align-items:center;gap:10px}
.arrow{width:48px;height:48px;border:2px solid var(--ink);background:transparent;font:700 1.3rem var(--body);cursor:pointer;color:var(--ink);transition:background .15s,color .15s}
.arrow:hover{background:var(--ink);color:var(--paper)}
.pos{font:600 .95rem var(--body);min-width:3.4em;text-align:center}
.track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:4px}
.track::-webkit-scrollbar{display:none}
.track figure{margin:0;flex:0 0 min(88%,560px);scroll-snap-align:start}
.ph{display:flex;align-items:center;justify-content:center;text-align:center;aspect-ratio:4/3;padding:24px;border:2px solid var(--ink);background:var(--concrete) var(--grain);background-image:repeating-linear-gradient(0deg,rgba(28,29,31,.07) 0 28px,transparent 28px 32px),var(--grain);font-weight:600;font-size:.92rem;color:#3c3e42}
.track figcaption{margin-top:10px;font-size:.92rem}

/* Contact */
.contact{display:grid;gap:44px}
address{font-style:normal;font-size:1.15rem;line-height:1.7;margin-bottom:14px}
.pb{color:#55575b;font-size:.95rem}
.tel a{font:800 clamp(1.8rem,6vw,2.6rem) var(--head);text-decoration:none;letter-spacing:-.01em;border-bottom:3px solid var(--brick)}
.contact-info p{margin:12px 0}
.lien{font-weight:600}
form{display:grid;gap:6px;max-width:540px}
form h3{margin-bottom:6px}
label{font:700 .85rem var(--body);letter-spacing:.08em;text-transform:uppercase;margin-top:14px;color:#3c3e42}
.hp{position:absolute;left:-9999px}
form .btn{margin-top:22px;justify-self:start}
.form-msg{min-height:1.6em;margin:12px 0 0;font-weight:600}
.form-msg.ok{color:#2b6a35}.form-msg.err{color:#a4271a}.form-msg.info{color:#3c3e42;background:rgba(176,70,43,.14);padding:10px 12px}
@media (min-width:860px){.contact{grid-template-columns:1fr 1fr;gap:80px}}

footer{margin-top:clamp(80px,13vh,150px);padding:30px var(--pad);background:var(--ink);color:#d3d1ca;font-size:.95rem}
footer p{margin:4px auto;max-width:calc(var(--max) - 2*var(--pad))}
footer b{color:var(--brick-light)}
footer a{margin-right:20px}

/* Apparition des blocs (si JavaScript actif) */
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}

/* Pages légales */
.legal-page{background:#fff}
.legal{max-width:720px;margin:0 auto;padding:30px var(--pad) 70px}
.legal h1{font-size:2.4rem;line-height:1.05;margin:20px 0 14px;animation:none}
.legal h2{font-size:1.4rem;margin:28px 0 8px}
.legal .draft{background:rgba(176,70,43,.14);border:2px solid var(--brick);padding:12px 14px}