/* Concept : la feuille de plan. Ouverture sur fond bleu de plan avec une pièce cotée,
   puis du papier calque froid, des filets fins et des annotations façon cotes. */
:root{
  --paper:#eef1f4;      /* calque */
  --white:#fbfcfd;
  --ink:#0f1c2e;        /* encre */
  --ink-2:#46566b;
  --line:#ccd4de;
  --blue:#1f5d99;       /* bleu Boyet */
  --plan:#112c4a;       /* fond bleu de plan */
  --plan-line:#9cc0e4;  /* trait sur plan */
  --plan-text:#d7e5f3;

  --display:"Archivo", "Arial Narrow", system-ui, sans-serif;
  --body:"Archivo", system-ui, -apple-system, sans-serif;
  --mono:"JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --max:1200px;
  --gutter:clamp(16px, 4vw, 40px);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{font-family:var(--body);font-size:16px;line-height:1.65;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:var(--gutter)}

h1,h2,h3{font-family:var(--display);font-variation-settings:"wdth" 116;letter-spacing:-.015em;line-height:1.08;text-wrap:balance}
h2{font-size:clamp(1.8rem,3.6vw,2.9rem);font-weight:700}
h3{font-size:1.12rem;font-weight:650;font-variation-settings:"wdth" 108;letter-spacing:-.005em;line-height:1.3}
p{text-wrap:pretty}

.tag{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);display:flex;align-items:center;gap:12px}
.tag::before{content:"";width:22px;height:1px;background:currentColor}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--blue);color:var(--white);text-decoration:none;font-family:var(--body);font-weight:600;font-size:.95rem;padding:14px 22px;border:1px solid var(--blue);cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn:hover{background:var(--ink);border-color:var(--ink)}
.btn-sm{padding:10px 16px;font-size:.88rem}
.btn-line{background:transparent;color:var(--plan-text);border-color:rgba(156,192,228,.45)}
.btn-line:hover{background:transparent;border-color:var(--plan-text);color:var(--white)}

/* En-tête */
/* L'en-tête prolonge le bleu de plan de l'ouverture */
.site-header{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--plan) 94%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid rgba(156,192,228,.18);color:var(--plan-text)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:block;color:var(--white);text-decoration:none}
.logo-svg{height:46px;width:auto;display:block;overflow:visible}
.logo-svg text{fill:currentColor;font-family:var(--display);font-variation-settings:"wdth" 125;font-weight:800;font-size:21px;letter-spacing:.06em}
.logo-rule{stroke:var(--plan-line);stroke-width:1.4}
.menu{display:flex;align-items:center;gap:34px}
.menu a:not(.btn){text-decoration:none;font-family:var(--mono);font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--plan-text);opacity:.8;transition:opacity .15s,color .15s;position:relative;padding-block:6px}
.menu a:not(.btn)::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--plan-line);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.menu a:not(.btn):hover{opacity:1;color:var(--white)}
.menu a:not(.btn):hover::after{transform:scaleX(1)}
.site-header .btn{background:var(--white);color:var(--plan);border-color:var(--white)}
.site-header .btn:hover{background:transparent;color:var(--white)}
.burger{display:none;background:none;border:0;cursor:pointer;width:40px;height:40px;position:relative}
.burger span{position:absolute;left:9px;right:9px;height:2px;background:var(--white);transition:transform .2s}
.burger span:first-child{top:15px}.burger span:last-child{top:23px}
.burger[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* Ouverture */
.hero{background-color:var(--plan);color:var(--plan-text);padding-block:clamp(56px,8vw,104px) 0;
  background-image:
    linear-gradient(rgba(156,192,228,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(156,192,228,.07) 1px,transparent 1px);
  background-size:32px 32px;background-position:-1px -1px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(32px,5vw,72px);align-items:center}
.hero .tag{color:var(--plan-line)}
.hero h1{color:var(--white);font-size:clamp(2.3rem,5.1vw,4.1rem);font-weight:560;font-variation-settings:"wdth" 112;margin:22px 0 24px;letter-spacing:-.02em;line-height:1.06}
.lead{font-size:clamp(1.05rem,1.4vw,1.2rem);max-width:46ch;color:var(--plan-text)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.hero .btn:not(.btn-line):hover{background:var(--white);color:var(--plan);border-color:var(--white)}

.drawing svg{width:100%;height:auto;overflow:visible}
.drawing .part{fill:none;stroke:var(--white);stroke-width:1.8;stroke-linejoin:round}
.drawing .axis{stroke:var(--plan-line);stroke-width:1;stroke-dasharray:22 5 3 5;opacity:.8}
.drawing .dim,.drawing .frame{fill:none;stroke:var(--plan-line);stroke-width:1}
.drawing .fill{fill:var(--plan-line)}
.drawing .hatch{stroke:var(--plan-line);stroke-width:1;opacity:.55}
.drawing .note{fill:var(--plan-text);font-family:var(--mono);font-size:15px}

/* Le tracé ne s'anime que si main.js ajoute .anim (page visible, mouvement autorisé) :
   sans script, le plan reste affiché tel quel. */
.drawing.anim .draw{stroke-dasharray:1400;stroke-dashoffset:1400;animation:trace 2.2s cubic-bezier(.6,.05,.3,1) forwards}
.drawing.anim .axis.draw{stroke-dasharray:22 5 3 5;stroke-dashoffset:0;animation:fadein 1s ease-out both}
.drawing.anim .dim.draw{animation-delay:1s;animation-duration:1.2s}
.drawing.anim .fade{opacity:0;animation:fadein .8s ease-out 1.8s forwards}
@keyframes trace{to{stroke-dashoffset:0}}
@keyframes fadein{from{opacity:0}to{opacity:1}}

.specs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:clamp(48px,7vw,88px);border-top:1px solid rgba(156,192,228,.25)}
.specs > div{padding:22px 20px 30px 0;display:flex;flex-direction:column-reverse;gap:6px}
.specs > div + div{padding-left:20px;border-left:1px solid rgba(156,192,228,.25)}
.specs dt{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--plan-line)}
.specs dd{font-family:var(--display);font-variation-settings:"wdth" 122;font-weight:700;font-size:clamp(1.8rem,3.4vw,2.7rem);color:var(--white);line-height:1;font-variant-numeric:tabular-nums}
.specs dd.dd-text{font-size:clamp(1.1rem,1.8vw,1.45rem);padding-top:.4em}

/* Sections */
.sec{padding-block:clamp(72px,10vw,128px)}
.sec-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.3fr);gap:clamp(32px,6vw,96px);align-items:start}
.sec-head h2{margin:18px 0 18px}
.sec-head p{color:var(--ink-2);max-width:44ch}
.sec-head.wide{max-width:900px;margin-bottom:clamp(40px,5vw,64px)}
.sec-grid > .sec-head{position:sticky;top:110px}

/* Secteurs */
.sectors{list-style:none;border-top:1px solid var(--ink)}
.sectors li{display:grid;grid-template-columns:120px minmax(0,1fr);gap:24px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
.sectors img{width:120px;height:80px;object-fit:cover;filter:grayscale(1) contrast(1.05);opacity:.9;transition:filter .35s,opacity .35s}
.sectors li:hover img{filter:none;opacity:1}
.sectors h3{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;font-size:1.3rem}
.sectors p{color:var(--ink-2);font-size:.95rem;margin-top:4px}
.pct{font-family:var(--mono);font-weight:500;font-size:.72rem;letter-spacing:.06em;color:var(--white);background:var(--blue);padding:3px 8px;font-variation-settings:normal}
.lead-sector{padding-top:24px !important}

/* Savoir-faire */
.know{background:var(--white);border-block:1px solid var(--line)}
.statement{font-family:var(--display);font-variation-settings:"wdth" 104;font-weight:500;font-size:clamp(1.45rem,3vw,2.35rem);line-height:1.28;letter-spacing:-.012em;max-width:30ch;margin:22px 0 clamp(48px,6vw,72px);text-wrap:balance}
.statement em{font-style:normal;color:var(--blue);background:linear-gradient(transparent 88%,currentColor 88%,currentColor 94%,transparent 94%)}
.axes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,4vw,48px)}
.axes > div{border-top:2px solid var(--ink);padding-top:18px}
.axes p{color:var(--ink-2);margin-top:8px;font-size:.96rem}

/* Atelier */
.dark{background:var(--ink);color:#c9d3df}
.dark h2,.dark h3{color:var(--white)}
.dark .tag{color:var(--plan-line)}
.park{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid rgba(255,255,255,.18)}
.park-item{padding:28px 28px 32px 0}
.park-item + .park-item{padding-left:28px;border-left:1px solid rgba(255,255,255,.18)}
.park .n{display:block;font-family:var(--display);font-variation-settings:"wdth" 125;font-weight:800;font-size:clamp(3.4rem,7vw,5.6rem);line-height:.9;color:var(--white);margin-bottom:18px;font-variant-numeric:tabular-nums}
.park p{margin-top:6px;font-size:.95rem}
.control{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,5vw,64px);align-items:center;margin-top:clamp(56px,7vw,88px)}
.control img{width:100%;height:auto}
.control h3{font-size:1.5rem;margin-bottom:12px}
.soft{margin-top:24px;display:grid;gap:10px;border-top:1px solid rgba(255,255,255,.18);padding-top:20px}
.soft div{display:flex;gap:16px;flex-wrap:wrap}
.soft dt{font-family:var(--mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--plan-line);min-width:170px;padding-top:2px}
.soft dd{color:var(--white)}
.gallery{display:flex;gap:16px;overflow-x:auto;margin-top:clamp(48px,6vw,72px);padding-bottom:12px;scroll-snap-type:x mandatory;scrollbar-color:rgba(255,255,255,.3) transparent}
.gallery img{flex:none;width:min(420px,78vw);height:auto;scroll-snap-align:start;background:var(--white)}

/* Clients */
.clients{padding-block:44px;border-bottom:1px solid var(--line)}
.clients-row{display:flex;align-items:center;justify-content:space-between;gap:28px 48px;flex-wrap:wrap}
.clients .tag{color:var(--ink-2)}
.logos{display:flex;align-items:center;gap:clamp(24px,4vw,56px);flex-wrap:wrap}
.logos img{width:auto;mix-blend-mode:multiply;filter:grayscale(1);opacity:.75;transition:filter .3s,opacity .3s}
.logos img:hover{filter:none;opacity:1}

/* Histoire */
.timeline{list-style:none;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:0;border-top:1px solid var(--ink);position:relative}
.timeline li{padding:22px 18px 0 0;position:relative}
.timeline li::before{content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;background:var(--paper);border:1.5px solid var(--ink);border-radius:50%}
.yr{display:block;font-family:var(--display);font-variation-settings:"wdth" 122;font-weight:700;font-size:1.6rem;line-height:1;margin-bottom:12px;font-variant-numeric:tabular-nums}
.timeline p{font-size:.9rem;color:var(--ink-2);line-height:1.55}
.team{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:clamp(28px,5vw,64px);align-items:center;margin-top:clamp(64px,8vw,104px)}
.team img{width:100%;height:auto}
.team h3{font-size:1.5rem;margin-bottom:12px}
.team p{color:var(--ink-2)}
/* Le dirigeant */
.leader{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:start;margin-top:clamp(64px,8vw,104px);padding-top:clamp(40px,5vw,56px);border-top:1px solid var(--ink)}
.leader-photo{width:100%;height:auto;aspect-ratio:1;object-fit:cover}
.leader h3{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:650;margin-top:16px}
.leader-role{font-family:var(--mono);font-size:.8rem;letter-spacing:.04em;color:var(--blue);margin:8px 0 20px}
.leader-text > p:not(.tag):not(.leader-role){color:var(--ink-2);max-width:62ch}
.career{list-style:none;margin-top:28px;border-top:1px solid var(--line)}
.career li{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.94rem}
.career span{font-family:var(--mono);font-size:.78rem;color:var(--ink-2);padding-top:2px;font-variant-numeric:tabular-nums}
.career li:last-child{font-weight:600}

/* Carrières */
.tint{background:var(--white);border-top:1px solid var(--line)}
.sec-head a{color:var(--blue);text-underline-offset:3px}
.jobs{list-style:none;border-top:1px solid var(--ink)}
.jobs li{padding:20px 0;border-bottom:1px solid var(--line)}
.jobs p{font-size:.9rem;color:var(--ink-2);margin-top:4px}

/* Contact */
.contact-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(36px,6vw,96px);align-items:start}
.coords{margin-top:32px;border-top:1px solid var(--ink)}
.coords > div{display:grid;grid-template-columns:110px minmax(0,1fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.coords dt{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-2);padding-top:3px}
.coords a{text-decoration:none;border-bottom:1px solid var(--line)}
.coords a:hover{border-color:var(--ink)}
form{background:var(--white);border:1px solid var(--line);padding:clamp(20px,3vw,36px)}
.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field{margin-bottom:18px}
label{display:block;font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);margin-bottom:6px}
input,textarea,select{width:100%;font:inherit;font-size:1rem;padding:12px 0;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);border-radius:0;transition:border-color .15s}
select{appearance:none;background:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%) right 6px center/6px 6px no-repeat,linear-gradient(-45deg,transparent 50%,var(--ink-2) 50%) right 0 center/6px 6px no-repeat;padding-right:24px}
input:focus,textarea:focus,select:focus{outline:none;border-bottom:2px solid var(--blue);margin-bottom:-1px}
textarea{min-height:130px;resize:vertical}
.hp{position:absolute;left:-9999px}
.submit-row{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:8px}
.form-note{font-size:.82rem;color:var(--ink-2);flex:1;min-width:200px}
.form-note a{text-underline-offset:3px}
.status{margin-top:18px;padding:12px 14px;font-size:.92rem;display:none}
.status.ok{display:block;background:#e5f2ea;color:#1c6238}
.status.err{display:block;background:#f9e7e7;color:#8d2a2a}

/* Pied de page : cartouche */
.site-footer{padding-block:48px 56px;background:var(--paper)}
.cartouche{display:grid;grid-template-columns:200px minmax(0,1fr) minmax(0,1.3fr) minmax(0,1fr) 150px;border:1.5px solid var(--ink);font-size:.92rem}
.cartouche > div{border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:12px 14px;min-width:0}
.c-logo{grid-row:span 2;display:flex;align-items:center;justify-content:center}
.c-logo img{height:84px;width:auto;mix-blend-mode:multiply}
.c-cell span{display:block;font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);margin-bottom:4px}
.c-cell a{text-decoration:none}
.c-certs{grid-column:2 / span 2;display:flex;align-items:center;gap:16px}
.c-certs img{width:auto;mix-blend-mode:multiply}
.c-cell b{font-weight:inherit}
.c-links a{text-decoration:underline;text-underline-offset:3px}
.cartouche > div:nth-child(5),.cartouche > div:last-child{border-right:0}
.cartouche > div:nth-child(n+6){border-bottom:0}

/* Page mentions légales */
.legal{padding-block:64px 104px}
.legal h1{font-size:clamp(2rem,4vw,3rem);font-weight:750;margin:18px 0 36px}
.legal h2{font-size:1.25rem;margin:40px 0 10px}
.legal p{color:var(--ink-2);max-width:68ch}
.legal p + p{margin-top:12px}
.todo{background:#fff1c7;color:var(--ink);padding:0 4px}

@media (max-width:980px){
  .hero-grid,.sec-grid,.contact-grid,.control,.team,.leader{grid-template-columns:minmax(0,1fr)}
  .leader-photo{max-width:260px}
  .sec-grid > .sec-head{position:static}
  .timeline{grid-template-columns:none;border-top:0;border-left:1px solid var(--ink);margin-left:4px}
  .timeline li{padding:0 0 26px 26px}
  .timeline li::before{top:4px;left:-5px}
  .yr{font-size:1.3rem;margin-bottom:6px}
  .cartouche{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cartouche > div{border-right:1px solid var(--ink) !important;border-bottom:1px solid var(--ink) !important}
  .cartouche > div:nth-child(even){border-right:0 !important}
  .c-logo{grid-row:auto;grid-column:1 / -1;border-right:0 !important}
  .c-certs{grid-column:1 / -1;border-right:0 !important}
  .cartouche > div:last-child{border-bottom:0 !important}
  .cartouche{grid-auto-flow:row dense}
}
@media (max-width:820px){
  .burger{display:block}
  .menu{display:none;position:absolute;top:72px;left:0;right:0;background:var(--plan);flex-direction:column;align-items:stretch;gap:0;padding:8px var(--gutter) 24px;border-bottom:1px solid rgba(156,192,228,.18)}
  .menu.open{display:flex}
  .menu a:not(.btn){padding:16px 0;border-bottom:1px solid rgba(156,192,228,.18);font-size:.85rem;opacity:1}
  .menu a:not(.btn)::after{display:none}
  .menu .btn{margin-top:16px}
  .specs{grid-template-columns:repeat(2,minmax(0,1fr))}
  .specs > div:nth-child(3){border-left:0;padding-left:0}
  .specs > div:nth-child(n+3){border-top:1px solid rgba(156,192,228,.25)}
  .park{grid-template-columns:minmax(0,1fr)}
  .park-item,.park-item + .park-item{padding:24px 0;border-left:0;border-bottom:1px solid rgba(255,255,255,.18);display:grid;grid-template-columns:110px minmax(0,1fr);column-gap:20px;align-items:start}
  .park .n{grid-row:span 2;margin:0;font-size:3.6rem}
  .axes{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:520px){
  .row{grid-template-columns:minmax(0,1fr);gap:0}
  .sectors li{grid-template-columns:84px minmax(0,1fr);gap:16px}
  .sectors img{width:84px;height:64px}
  .sectors h3{font-size:1.12rem}
  .coords > div,.career li{grid-template-columns:minmax(0,1fr);gap:2px}
  .actions .btn{flex:1 1 auto;white-space:nowrap;padding-inline:18px}
  .drawing .note{font-size:15px}
}