/* Northclère — Conseil en IA institutionnelle */
:root{
  --graphite:#16191F;
  --slate:#22262E;
  --slate-2:#1B1F26;
  --ink:#0F1216;
  --paper:#F2F4F7;
  --muted:#9AA3B0;
  --hairline:#3A3F49;
  --steel:#5B8DEF;
  --jade:#3FB68B;
  --amber:#E0A458;
  --radius:14px;
  --max:1180px;
  --shadow:0 24px 60px -28px rgba(0,0,0,.65);
  --font-display:"Fraunces",Georgia,serif;
  --font-body:"Inter",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-body);background:var(--graphite);color:var(--paper);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.eyebrow{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--steel)}
h1,h2,h3{font-family:var(--font-display);font-weight:500;line-height:1.1;letter-spacing:-.01em;margin:0}
h2{font-size:clamp(1.8rem,3.4vw,2.7rem)}
p{color:#C7CCD4}
.btn{
  display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.82rem;
  letter-spacing:.04em;padding:.85rem 1.4rem;border-radius:10px;border:1px solid var(--hairline);
  cursor:pointer;transition:.25s;background:transparent;color:var(--paper)
}
.btn-primary{background:var(--steel);border-color:var(--steel);color:#0B1220;font-weight:600}
.btn-primary:hover{background:#79a4f2;transform:translateY(-2px)}
.btn-ghost:hover{border-color:var(--steel);color:var(--steel)}

/* HEADER */
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(18,21,27,.78);border-bottom:1px solid var(--hairline)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:.7rem;font-family:var(--font-display);font-size:1.18rem}
.brand svg{width:30px;height:30px}
.brand b{font-weight:600}
.brand span{color:var(--muted);font-family:var(--font-mono);font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;align-self:flex-start;margin-top:4px}
.nav-links{display:flex;gap:1.6rem;align-items:center}
.nav-links a{font-size:.9rem;color:#C7CCD4;transition:.2s}
.nav-links a:hover{color:var(--steel)}
.menu-btn{display:none;background:none;border:1px solid var(--hairline);border-radius:8px;color:var(--paper);padding:.4rem .6rem;cursor:pointer}

/* HERO */
.hero{position:relative;padding:84px 0 70px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(2.4rem,5.4vw,4.1rem);margin:18px 0 22px}
.hero h1 em{font-style:italic;color:var(--steel)}
.hero p.lead{font-size:1.12rem;max-width:34ch}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:42px;flex-wrap:wrap}
.hero-stats div b{font-family:var(--font-display);font-size:1.9rem;display:block;color:var(--paper)}
.hero-stats div span{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* Matrice de prévision — signature */
.matrix{position:relative;border:1px solid var(--hairline);border-radius:var(--radius);
  background:linear-gradient(160deg,var(--slate),var(--slate-2));padding:22px;box-shadow:var(--shadow)}
.matrix-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.matrix-head .tag{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.dot{width:8px;height:8px;border-radius:50%;background:var(--jade);box-shadow:0 0 10px var(--jade);display:inline-block;margin-right:6px;animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.cells{display:grid;grid-template-columns:repeat(12,1fr);gap:5px}
.cell{aspect-ratio:1;border-radius:3px;background:#2B313B;transition:background .5s ease, transform .3s}
.cell.lit{background:var(--steel)}
.cell.hi{background:var(--jade)}
.cell:hover{transform:scale(1.18);background:var(--amber)}
.matrix-foot{display:flex;justify-content:space-between;margin-top:16px;font-family:var(--font-mono);font-size:.7rem;color:var(--muted)}
.matrix-foot b{color:var(--jade)}

/* LOGOS / bandeau confiance */
.trust{border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);padding:26px 0;margin-top:30px}
.trust .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.trust span{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);letter-spacing:.1em}
.trust .marks{display:flex;gap:30px;flex-wrap:wrap;opacity:.8}
.trust .marks b{font-family:var(--font-display);font-size:1.05rem;color:#AEB6C2}

/* SECTIONS */
section{padding:88px 0}
.sec-head{max-width:60ch;margin-bottom:48px}
.sec-head h2{margin:12px 0}
.sec-head p{font-size:1.05rem}

/* SERVICES */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--slate);border:1px solid var(--hairline);border-radius:var(--radius);
  padding:30px;transition:.3s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-6px);border-color:var(--steel)}
.card .num{font-family:var(--font-mono);font-size:.74rem;color:var(--steel);letter-spacing:.1em}
.card h3{font-size:1.35rem;margin:14px 0 10px}
.card p{font-size:.95rem;margin:0}
.card ul{margin:16px 0 0;padding:0;list-style:none}
.card li{font-size:.86rem;color:#AEB6C2;padding:6px 0 6px 18px;position:relative}
.card li:before{content:"";position:absolute;left:0;top:13px;width:7px;height:7px;border-radius:2px;background:var(--jade)}

/* APPROCHE / process */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{border-top:2px solid var(--hairline);padding-top:20px}
.step .s{font-family:var(--font-mono);color:var(--steel);font-size:.78rem;letter-spacing:.1em}
.step h3{font-size:1.12rem;margin:10px 0 8px}
.step p{font-size:.9rem;margin:0}

/* IMAGE FEATURE */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.feature img{border-radius:var(--radius);border:1px solid var(--hairline);box-shadow:var(--shadow);width:100%;height:100%;object-fit:cover;max-height:460px}
.feature ul{list-style:none;padding:0;margin:24px 0 0}
.feature li{padding:12px 0;border-bottom:1px solid var(--hairline);display:flex;gap:14px;align-items:flex-start}
.feature li b{font-family:var(--font-display);color:var(--paper)}
.feature li span{font-family:var(--font-mono);color:var(--jade);font-size:.85rem;flex-shrink:0}

/* GALLERY */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.gallery figure{margin:0;position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--hairline)}
.gallery img{height:240px;width:100%;object-fit:cover;transition:.5s}
.gallery figure:hover img{transform:scale(1.06)}
.gallery figcaption{position:absolute;left:0;bottom:0;right:0;padding:16px;font-family:var(--font-mono);
  font-size:.74rem;letter-spacing:.06em;background:linear-gradient(transparent,rgba(11,14,18,.92));color:var(--paper)}

/* PRICING */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan{background:var(--slate);border:1px solid var(--hairline);border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;position:relative}
.plan.featured{border-color:var(--steel);box-shadow:var(--shadow)}
.plan .ribbon{position:absolute;top:-12px;right:24px;background:var(--steel);color:#0B1220;font-family:var(--font-mono);
  font-size:.64rem;letter-spacing:.14em;padding:5px 12px;border-radius:20px;text-transform:uppercase;font-weight:600}
.plan h3{font-size:1.3rem}
.plan .price{font-family:var(--font-display);font-size:2.5rem;margin:14px 0 2px}
.plan .price small{font-family:var(--font-mono);font-size:.78rem;color:var(--muted)}
.plan .note{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);margin-bottom:18px}
.plan ul{list-style:none;padding:0;margin:0 0 26px;flex:1}
.plan li{font-size:.9rem;padding:9px 0 9px 24px;position:relative;border-bottom:1px solid rgba(58,63,73,.5)}
.plan li:before{content:"→";position:absolute;left:0;color:var(--jade);font-family:var(--font-mono)}
.pricing-note{text-align:center;margin-top:30px;font-family:var(--font-mono);font-size:.8rem;color:var(--muted)}

/* TESTIMONIAL */
.quote{max-width:46ch;margin:0 auto;text-align:center}
.quote blockquote{font-family:var(--font-display);font-size:clamp(1.4rem,3vw,2.1rem);line-height:1.3;margin:0 0 24px;font-style:italic}
.quote cite{font-family:var(--font-mono);font-size:.8rem;color:var(--muted);font-style:normal}

/* FAQ */
.faq{max-width:780px;margin:0 auto}
.faq details{border-bottom:1px solid var(--hairline);padding:20px 0}
.faq summary{cursor:pointer;font-family:var(--font-display);font-size:1.18rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-family:var(--font-mono);color:var(--steel);font-size:1.4rem}
.faq details[open] summary:after{content:"−"}
.faq p{margin:14px 0 0;font-size:.96rem}

/* CONTACT */
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px}
.contact-info h2{margin-bottom:18px}
.contact-info .row{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--hairline)}
.contact-info .row .k{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--steel);text-transform:uppercase;min-width:90px}
.contact-info .row .v{font-size:.95rem;color:#C7CCD4}
form{background:var(--slate);border:1px solid var(--hairline);border-radius:var(--radius);padding:32px}
.field{margin-bottom:18px}
.field label{display:block;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;background:var(--ink);border:1px solid var(--hairline);
  border-radius:9px;padding:.8rem .9rem;color:var(--paper);font-family:var(--font-body);font-size:.95rem;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--steel);box-shadow:0 0 0 3px rgba(91,141,239,.16)}
.field textarea{resize:vertical;min-height:120px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.82rem;color:var(--muted)}
.check input{width:auto;margin-top:3px}
.check a{color:var(--steel);text-decoration:underline}
.form-msg{display:none;margin-top:14px;padding:12px 14px;border-radius:9px;font-family:var(--font-mono);font-size:.82rem}
.form-msg.ok{display:block;background:rgba(63,182,139,.12);border:1px solid var(--jade);color:var(--jade)}
.form-msg.err{display:block;background:rgba(224,108,108,.12);border:1px solid #E06C6C;color:#E89A9A}

/* FOOTER */
footer{border-top:1px solid var(--hairline);padding:54px 0 30px;background:var(--ink)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px;margin-bottom:38px}
.foot-grid p{font-size:.9rem;max-width:36ch}
.foot-grid h4{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 16px}
.foot-grid ul{list-style:none;padding:0;margin:0}
.foot-grid li{margin-bottom:10px}
.foot-grid a{font-size:.9rem;color:#AEB6C2;transition:.2s}
.foot-grid a:hover{color:var(--steel)}
.foot-bottom{border-top:1px solid var(--hairline);padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--font-mono);font-size:.74rem;color:var(--muted)}

/* COOKIE */
.cookie{position:fixed;left:24px;right:24px;bottom:24px;max-width:560px;margin:0 auto;z-index:90;
  background:var(--slate);border:1px solid var(--hairline);border-radius:var(--radius);padding:22px 24px;
  box-shadow:var(--shadow);display:none}
.cookie.show{display:block;animation:rise .4s ease}
@keyframes rise{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.cookie p{font-size:.86rem;margin:0 0 16px}
.cookie p a{color:var(--steel);text-decoration:underline}
.cookie-actions{display:flex;gap:12px;flex-wrap:wrap}

/* LEGAL PAGES */
.legal{padding:60px 0 80px;max-width:820px;margin:0 auto}
.legal h1{font-size:clamp(2rem,4vw,2.8rem);margin-bottom:10px}
.legal .updated{font-family:var(--font-mono);font-size:.76rem;color:var(--muted);margin-bottom:40px}
.legal h2{font-size:1.4rem;margin:38px 0 12px}
.legal p,.legal li{font-size:.96rem;color:#C7CCD4}
.legal ul{padding-left:20px}
.legal a{color:var(--steel);text-decoration:underline}
.back{font-family:var(--font-mono);font-size:.8rem;color:var(--steel);display:inline-block;margin-bottom:30px}

/* RESPONSIVE */
@media(max-width:920px){
  .hero-grid,.feature,.contact{grid-template-columns:1fr;gap:38px}
  .services-grid,.pricing-grid,.gallery{grid-template-columns:1fr 1fr}
  .process{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;
    background:var(--slate);padding:20px 24px;border-bottom:1px solid var(--hairline);gap:1rem}
  .menu-btn{display:block}
}
@media(max-width:580px){
  .services-grid,.pricing-grid,.gallery,.process{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  section{padding:62px 0}
  .hero-stats{gap:24px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}