/* UBAC CONSEIL, site V6, charte "Versant"
   Young Serif (titres) + Hanken Grotesk (texte)
   Vert sapin profond, neige, lichen, courbes de niveau */

:root{
  --shade:#17302d;      /* vert sapin, fonds sombres */
  --shade-2:#21403b;
  --shade-3:#2f5650;    /* versant */
  --snow:#f3f0e8;       /* fond clair secondaire */
  --paper:#fbfaf6;      /* fond de page */
  --ink:#15211f;        /* texte */
  --muted:#56635f;      /* texte secondaire */
  --lichen:#d3e07a;     /* couleur d'accent */
  --lichen-hover:#e2ec98;
  --stone:#a7b7ae;
  --line:#dcd8cc;
  --leaf:#e6eedb;       /* fond Green IT */
  --wrap:1200px;
  --r:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:'Hanken Grotesk',system-ui,-apple-system,'Segoe UI',sans-serif;font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{display:block;max-width:100%}
p,h1,h2,h3,ul{margin:0;padding:0}
ul{list-style:none}
h1,h2,h3{font-family:'Young Serif',Georgia,serif;font-weight:400;letter-spacing:-.01em;text-wrap:balance}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
@media(max-width:700px){.wrap{padding:0 18px}}

/* logo : UB + A-montagne + C */
.logo{font-family:'Hanken Grotesk',sans-serif;font-weight:700;font-size:25px;line-height:1;white-space:nowrap;display:inline-flex;align-items:baseline;text-decoration:none;color:#fff}
.logo .logo-a{height:.96em;width:auto;margin:0 .06em 0 .08em;transform:translateY(.1em)}
.logo-a .p{fill:currentColor}
.logo-a .s{fill:var(--lichen)}

/* zone sombre du haut (en-tête + bandeau de page) */
.top{background:var(--shade);color:var(--snow);position:relative;overflow:hidden}
.topo{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.topo path{fill:none;stroke:#fff;stroke-opacity:.07;stroke-width:1.2}
header{position:relative;z-index:5}
.nav{display:flex;align-items:center;justify-content:space-between;height:84px;gap:24px}
.navlinks{display:flex;gap:4px;font-size:15px}
.navlinks a{text-decoration:none;padding:8px 14px;border-radius:999px;color:#d7dfd9;white-space:nowrap}
.navlinks a:hover{background:rgba(255,255,255,.08);color:#fff}
.navlinks a.active{background:rgba(255,255,255,.12);color:#fff}
.navlinks a.cta{background:var(--lichen);color:var(--shade);font-weight:600}
.navlinks a.cta:hover{background:var(--lichen-hover)}
.burger{display:none;width:44px;height:44px;border-radius:999px;border:1px solid rgba(255,255,255,.3);background:transparent;cursor:pointer;align-items:center;justify-content:center}
.burger span,.burger span::before,.burger span::after{content:"";display:block;width:18px;height:2px;background:#fff;position:relative;border-radius:2px}
.burger span::before{position:absolute;top:-6px}.burger span::after{position:absolute;top:6px}
#mmenu{display:none;position:relative;z-index:5;padding:0 0 22px}
#mmenu.open{display:block}
#mmenu a{display:block;padding:13px 4px;border-bottom:1px solid rgba(255,255,255,.12);text-decoration:none;color:#e4ebe6;font-weight:500}
#mmenu a.active{color:var(--lichen)}
@media(max-width:1060px){.navlinks{display:none}.burger{display:inline-flex}}

/* boutons */
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 24px;border-radius:999px;font-weight:600;font-size:15.5px;text-decoration:none;transition:.2s;min-height:48px}
.btn-l{background:var(--lichen);color:var(--shade)}
.btn-l:hover{background:var(--lichen-hover)}
.btn-o{border:1px solid rgba(255,255,255,.3);color:#fff}
.btn-o:hover{border-color:#fff}
.btn-d{background:var(--shade);color:#fff}
.btn-d:hover{background:var(--shade-3)}

/* accueil : bandeau principal */
.hero{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding-top:56px;padding-bottom:96px}
.hero h1{font-size:clamp(2.4rem,4.6vw,4rem);line-height:1.08;color:#fff}
.hero .lead{margin-top:26px;font-size:18px;color:#c9d4cf;max-width:54ch}
.mount text{font-family:'Hanken Grotesk',sans-serif}
.mount .lab{fill:#fff;font-size:17px;font-weight:600}
.mount .tag{fill:var(--stone);font-size:12.5px;font-weight:500}
@media(max-width:900px){.hero{grid-template-columns:1fr;padding-bottom:64px}}

/* pages intérieures : bandeau de titre */
.pagehead{position:relative;z-index:2;padding:48px 0 88px;max-width:760px}
.pagehead .kicker{display:inline-block;font-size:14px;font-weight:600;color:var(--stone);margin-bottom:18px}
.pagehead h1{font-size:clamp(2.2rem,4.2vw,3.5rem);line-height:1.1;color:#fff}
.pagehead .lead{margin-top:22px;font-size:18px;color:#c9d4cf;max-width:60ch}

/* sections */
.sec{padding:104px 0}
.sec.tight{padding-top:24px}
.sec.alt{background:var(--snow)}
.head{max-width:640px;margin-bottom:52px}
.head h2{font-size:clamp(2rem,3.4vw,2.8rem);line-height:1.12}
.head p{margin-top:16px;color:var(--muted)}
@media(max-width:700px){.sec{padding:72px 0}}

/* accueil : trois panneaux en altitude */
.peaks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:end}
.peak{border-radius:var(--r);padding:34px 30px 30px;display:flex;flex-direction:column;text-decoration:none;transition:transform .25s}
.peak:hover{transform:translateY(-6px)}
.peak .alt{font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:auto;padding-bottom:40px}
.peak h3{font-size:1.65rem;line-height:1.15;margin-bottom:18px}
.peak li{padding:9px 0;border-top:1px solid rgba(0,0,0,.12);font-size:15.5px}
.peak .more{margin-top:22px;font-weight:600;font-size:15px}
.p-ia{background:var(--lichen);color:var(--shade);min-height:520px}
.p-cy{background:var(--shade-3);color:#fff;min-height:470px}
.p-in{background:var(--shade);color:#fff;min-height:420px}
.p-cy li,.p-in li{border-top-color:rgba(255,255,255,.18)}
.p-cy .alt,.p-in .alt{color:var(--stone)}
@media(max-width:900px){.peaks{grid-template-columns:1fr}.peak{min-height:0}.peak .alt{padding-bottom:24px}}

/* pages intérieures : cartes de prestations */
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px 32px 30px}
.card .pill{display:inline-block;font-size:13px;font-weight:600;padding:6px 13px;border-radius:999px;margin-bottom:22px;background:var(--snow);color:var(--shade)}
.card h3{font-size:1.5rem;line-height:1.18;margin-bottom:16px}
.card li{padding:9px 0;border-top:1px solid var(--line);font-size:15.5px;color:var(--muted)}
.theme-cyber .card .pill{background:var(--shade-3);color:#fff}
.theme-ia .card .pill{background:var(--lichen);color:var(--shade)}
.theme-infra .card .pill{background:var(--shade);color:#fff}
@media(max-width:860px){.cards{grid-template-columns:1fr}}

/* démarche : le sentier */
.trail{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.trail::before{content:"";position:absolute;left:0;right:0;top:11px;border-top:2px dashed var(--stone)}
.stage{position:relative;padding-top:44px}
.stage::before{content:"";position:absolute;top:0;left:0;width:24px;height:24px;border-radius:50%;background:var(--paper);border:2px solid var(--shade)}
.sec.alt .stage::before{background:var(--snow)}
.stage:last-child::before{background:var(--shade)!important}
.stage h3{font-size:1.35rem;margin-bottom:10px}
.stage p{font-size:15.5px;color:var(--muted)}
@media(max-width:900px){.trail{grid-template-columns:1fr}.trail::before{left:11px;right:auto;top:0;bottom:0;border-top:0;border-left:2px dashed var(--stone)}.stage{padding:0 0 0 48px}}

/* mur de logos clients */
.wall{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;align-items:start}
.wall figure{margin:0;background:#fff;border-radius:var(--r);padding:18px 18px 14px;border:1px solid var(--line)}
.wall figcaption{font-weight:600;font-size:14.5px;margin-bottom:12px}
.wall img{width:100%;height:auto;border-radius:10px}
@media(max-width:900px){.wall{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.wall{grid-template-columns:1fr}}

/* encadré (page IA) */
.note{background:var(--leaf);border-radius:var(--r);padding:36px 40px;font-size:17px;color:#2f3d38;max-width:900px}
.note strong{font-family:'Young Serif',Georgia,serif;font-weight:400;font-size:1.35rem;display:block;color:var(--ink);margin-bottom:8px}

/* bandeau Green IT (accueil) */
.greenit{display:grid;grid-template-columns:auto 1fr auto;gap:36px;align-items:center;background:var(--leaf);border-radius:var(--r);padding:40px 44px}
.greenit svg{width:72px;height:72px}
.greenit h2{font-size:1.8rem;margin-bottom:8px}
.greenit p{color:#3e4d47;max-width:62ch}
@media(max-width:860px){.greenit{grid-template-columns:1fr;padding:32px 26px}}

/* page Green IT : frise */
.green-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:start}
.timeline{position:relative}
.timeline::before{content:"";position:absolute;left:31px;top:10px;bottom:10px;border-left:2px dashed var(--stone)}
.tl{position:relative;padding-left:92px;margin-bottom:40px}
.tl:last-child{margin-bottom:0}
.tl .yr{position:absolute;left:0;top:0;width:64px;height:64px;border-radius:50%;background:var(--leaf);border:2px solid var(--shade-3);color:var(--shade);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.tl h3{font-size:1.3rem;margin-bottom:6px;padding-top:6px}
.tl p{font-size:15.5px;color:var(--muted);max-width:60ch}
.green-card{background:var(--shade);color:#d7dfd9;border-radius:var(--r);padding:36px 34px}
.green-card svg{width:56px;height:56px;margin-bottom:22px}
.green-card h3{color:#fff;font-size:1.5rem;margin-bottom:14px}
.green-card p + p{margin-top:12px}
@media(min-width:900px){.green-card{position:sticky;top:32px}}
@media(max-width:900px){.green-grid{grid-template-columns:1fr}}

/* page Contact */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;align-items:stretch}
.ccard{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:36px 34px}
.ccard h2{font-size:1.6rem;margin-bottom:24px}
.crow{padding:16px 0;border-top:1px solid var(--line)}
.crow .k{display:block;font-size:13.5px;font-weight:600;color:var(--muted);margin-bottom:2px}
.crow .v{font-size:18px;text-decoration:none}
.crow a.v:hover{color:var(--shade-3);text-decoration:underline}
.cdark{background:var(--shade);color:#d7dfd9;border-radius:var(--r);padding:36px 34px;display:flex;flex-direction:column;position:relative;overflow:hidden}
.cdark h2{color:#fff;font-size:1.8rem;line-height:1.15;margin-bottom:12px;position:relative}
.cdark p{position:relative}
.cdark .btns{margin-top:auto;padding-top:32px;position:relative}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}

/* mentions légales */
.legal{max-width:74ch}
.legal h2{font-size:1.5rem;margin:0 0 14px}
.legal p{color:var(--muted);line-height:1.75;margin-bottom:14px}
.legal a{color:var(--shade-3)}

/* pied de page avec appel à contact */
.foot{background:var(--shade);color:#d7dfd9;position:relative;overflow:hidden}
.foot .inner{position:relative;z-index:2;padding-top:96px;padding-bottom:40px}
.foot h2{color:#fff;font-size:clamp(2.2rem,4.2vw,3.6rem);line-height:1.08;max-width:22ch}
.foot .sub{margin-top:16px;color:#c9d4cf;max-width:56ch}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;margin-top:88px;padding-top:28px;border-top:1px solid rgba(255,255,255,.15);font-size:14.5px}
.fgrid b{display:block;color:#fff;font-weight:600;margin-bottom:10px}
.fgrid a{display:block;text-decoration:none;padding:3px 0}
.fgrid a:hover{color:#fff}
.fgrid a.logo{display:inline-flex;padding:0}
.fgrid .about{margin-top:14px;max-width:32ch}
.legalbar{margin-top:40px;font-size:12.5px;color:#8fa29a;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.legalbar a{color:inherit}
@media(max-width:800px){.fgrid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.fgrid{grid-template-columns:1fr}}

@media(prefers-reduced-motion:no-preference){
  .hero > *,.pagehead > *{animation:rise .6s ease both}
  .hero > *:nth-child(2){animation-delay:.1s}
}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* V8 : logo de l'en-tête deux fois plus grand */
header .logo{font-size:50px}
header .nav{height:112px}
@media(max-width:600px){header .logo{font-size:38px}header .nav{height:92px}}