/* ============================================================
   VEDITECH — Bureau d'études techniques
   Charte : indigo #4d59a3 / lavande #857fbb sur blanc
   Type : Archivo + IBM Plex Mono
   ============================================================ */

:root{
  --indigo:#4d59a3;
  --indigo-deep:#3a4280;
  --ink-navy:#1d2138;
  --ink-navy-2:#272c4c;
  --lavender:#857fbb;
  --lavender-tint:#ecebf5;
  --lavender-wash:#f5f4fb;
  --paper:#ffffff;
  --paper-2:#f7f7fb;
  --ink:#1a1c2b;
  --muted:#65677b;
  --muted-light:#9a9bb0;
  --line:#e5e4ef;
  --line-2:#d9d8e6;
  --line-dark:rgba(255,255,255,.14);

  --maxw:1280px;
  --pad:clamp(20px,5vw,72px);
  --r:3px;

  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"Archivo","Archivo Fallback",system-ui,-apple-system,Segoe UI,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.5;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--lavender);color:#fff}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
.section{padding-block:clamp(64px,9vw,128px)}
.section--tight{padding-block:clamp(48px,6vw,80px)}

/* ---------- type ---------- */
h1,h2,h3,h4{font-weight:700;line-height:1.04;letter-spacing:-.02em;color:var(--ink)}
.display{
  font-weight:800;
  font-stretch:118%;
  font-size:clamp(2.6rem,6.2vw,5.4rem);
  line-height:.98;
  letter-spacing:-.025em;
}
.h2{font-size:clamp(2rem,3.8vw,3.1rem);font-stretch:108%}
.h3{font-size:clamp(1.35rem,2vw,1.7rem);letter-spacing:-.015em}
.lead{font-size:clamp(1.1rem,1.5vw,1.35rem);line-height:1.55;color:var(--muted);font-weight:400;max-width:60ch}
p{text-wrap:pretty}
.measure{max-width:62ch}

/* eyebrow / technical labels */
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--indigo);
  display:inline-flex;
  align-items:center;
  gap:12px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--lavender)}
.eyebrow--plain::before{display:none}
.num{font-family:var(--mono);font-weight:500;color:var(--lavender);font-size:13px;letter-spacing:.1em}

.kicker{font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}

/* ---------- buttons ---------- */
.btn{
  --bg:var(--indigo);--fg:#fff;--bd:var(--indigo);
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans);font-weight:600;font-size:15px;letter-spacing:.005em;
  padding:15px 24px;border:1px solid var(--bd);background:var(--bg);color:var(--fg);
  border-radius:var(--r);cursor:pointer;transition:.18s ease;white-space:nowrap;
}
.btn:hover{background:var(--indigo-deep);border-color:var(--indigo-deep);transform:translateY(-1px)}
.btn .ar{transition:transform .18s ease}
.btn:hover .ar{transform:translateX(3px)}
.btn--ghost{--bg:transparent;--fg:var(--ink);--bd:var(--line-2)}
.btn--ghost:hover{--bg:var(--paper-2);border-color:var(--indigo);color:var(--indigo);transform:translateY(-1px)}
.btn--ondark{--bg:#fff;--fg:var(--ink-navy);--bd:#fff}
.btn--ondark:hover{--bg:var(--lavender-tint);border-color:var(--lavender-tint)}
.btn--ghost-dark{--bg:transparent;--fg:#fff;--bd:var(--line-dark)}
.btn--ghost-dark:hover{--bg:rgba(255,255,255,.06);border-color:rgba(255,255,255,.4);transform:translateY(-1px)}

.tlink{font-family:var(--mono);font-size:13px;letter-spacing:.04em;color:var(--indigo);display:inline-flex;align-items:center;gap:8px;border-bottom:1px solid transparent;padding-bottom:2px;transition:.15s}
.tlink:hover{border-color:var(--indigo);gap:12px}

/* ---------- header / nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav__in{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
.brand{display:flex;align-items:center;gap:13px}
.brand__mark{width:30px;height:auto}
.brand__name{font-weight:800;font-stretch:112%;letter-spacing:.16em;font-size:19px;color:var(--ink)}
.nav__links{display:flex;align-items:center;gap:6px}
.nav__links a{
  font-size:14.5px;font-weight:500;color:var(--muted);white-space:nowrap;
  padding:9px 14px;border-radius:var(--r);transition:.15s;
}
.nav__links a:hover{color:var(--ink);background:var(--paper-2)}
.nav__links a.is-active{color:var(--indigo)}
.nav__cta{margin-left:8px}
.nav__burger{display:none;background:none;border:1px solid var(--line-2);border-radius:var(--r);width:42px;height:42px;cursor:pointer;align-items:center;justify-content:center}
.nav__burger span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.nav__burger span::before,.nav__burger span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink)}
.nav__burger span::before{top:-6px}.nav__burger span::after{top:6px}

/* ---------- dark band ---------- */
.dark{background:var(--ink-navy);color:#eceaf4}
.dark h1,.dark h2,.dark h3{color:#fff}
.dark .lead{color:#b9b7d4}
.dark .eyebrow{color:var(--lavender)}
.dark .kicker{color:var(--lavender)}

/* ---------- placeholder imagery ---------- */
.ph{
  position:relative;overflow:hidden;background:var(--lavender-wash);
  border:1px solid var(--line);border-radius:var(--r);
  background-image:repeating-linear-gradient(135deg,transparent 0 11px,rgba(77,89,163,.06) 11px 12px);
}
.ph--dark{background:var(--ink-navy-2);border-color:rgba(255,255,255,.1);
  background-image:repeating-linear-gradient(135deg,transparent 0 11px,rgba(255,255,255,.05) 11px 12px)}
.ph__tag{
  position:absolute;left:14px;bottom:13px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--indigo);
  background:rgba(255,255,255,.78);padding:5px 9px;border-radius:2px;
}
.ph--dark .ph__tag{color:#cfcdEa;background:rgba(0,0,0,.3)}
.ph__crosshair{position:absolute;inset:0;pointer-events:none}
.ph__crosshair::before,.ph__crosshair::after{content:"";position:absolute;background:rgba(77,89,163,.18)}
.ph__crosshair::before{left:50%;top:0;bottom:0;width:1px}
.ph__crosshair::after{top:50%;left:0;right:0;height:1px}
.ph--dark .ph__crosshair::before,.ph--dark .ph__crosshair::after{background:rgba(255,255,255,.12)}

/* ---------- cards / grid ---------- */
.grid{display:grid;gap:1px;background:var(--line)}
.rule{height:1px;background:var(--line);border:0}
.rule--dark{background:var(--line-dark)}

/* ---------- footer ---------- */
.foot{background:var(--ink-navy);color:#c7c5dd;padding-block:64px 32px}
.foot a{color:#c7c5dd}
.foot__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
.foot__brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.foot__brand .brand__name{color:#fff}
.foot h4{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--lavender);font-weight:500;margin-bottom:16px}
.foot ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.foot ul a{font-size:14.5px;color:#b9b7d4;transition:.15s}
.foot ul a:hover{color:#fff}
.foot__bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:48px;padding-top:24px;border-top:1px solid var(--line-dark);font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:#85839c;flex-wrap:wrap}

/* ---------- utilities ---------- */
.stack{display:flex;flex-direction:column}
.row{display:flex;align-items:center}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}
.tag{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--muted);border:1px solid var(--line);padding:7px 13px;border-radius:100px}
.tag--dark{color:#cfcdEa;border-color:var(--line-dark)}
.dot{width:5px;height:5px;border-radius:50%;background:var(--lavender);flex:none}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .nav__links{
    position:fixed;inset:74px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px var(--pad) 18px;
    transform:translateY(-120%);transition:transform .28s ease;box-shadow:0 20px 40px rgba(20,22,40,.08);
  }
  .nav__links.open{transform:none}
  .nav__links a{padding:13px 4px;border-bottom:1px solid var(--line);border-radius:0}
  .nav__cta{margin:12px 0 0}
  .nav__burger{display:flex}
  .foot__grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot__brand{grid-column:1/-1}
}
@media (max-width:560px){
  .foot__grid{grid-template-columns:1fr}
  .btn{width:100%;justify-content:center}
  .btn-row .btn{width:auto;flex:1 1 auto}
}