/* ============================================================
   ARKOVA — Design System
   Nuit · lignes lumineuses · architecture de systèmes
   ============================================================ */
:root{
  --night:#0A0E1A;
  --night-2:#0D1220;
  --panel:#111828;
  --panel-2:#151D33;
  --line:rgba(122,152,224,.15);
  --line-soft:rgba(122,152,224,.07);
  --ink:#EDF2FF;
  --ink-soft:#9BA8C9;
  --ink-dim:#67739A;
  --cyan:#3DE0D0;
  --cyan-deep:#1FB5A8;
  --violet:#7C6CFF;
  --glow:0 0 26px rgba(61,224,208,.20);
  --grad:linear-gradient(120deg,var(--cyan) 0%,var(--violet) 100%);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',sans-serif;background:var(--night);color:var(--ink);
  font-size:17px;line-height:1.66;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
::selection{background:rgba(61,224,208,.25)}
.bg-grid{
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(to right, rgba(122,152,224,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(122,152,224,.04) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 100% 60% at 50% 0%, #000 25%, transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 100% 60% at 50% 0%, #000 25%, transparent 78%);
}
main{position:relative;z-index:1}
.wrap{max-width:1140px;margin:0 auto;padding:0 26px}
h1,h2,h3{font-family:'Space Grotesk',sans-serif;font-weight:600;line-height:1.08;letter-spacing:-0.022em}
.mono{font-family:'JetBrains Mono',monospace}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
a{color:inherit}
.eyebrow{
  font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.17em;
  text-transform:uppercase;color:var(--cyan);display:flex;align-items:center;gap:12px;margin-bottom:24px;
}
.eyebrow::before{content:"";width:32px;height:1px;background:var(--grad)}
.btn{
  display:inline-flex;align-items:center;gap:9px;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:16px;
  padding:15px 30px;border-radius:10px;text-decoration:none;
  transition:transform .18s var(--ease),box-shadow .25s var(--ease),border-color .2s,background .2s;
  border:1px solid transparent;cursor:pointer;
}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.btn-primary{background:var(--grad);color:#07101A;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 38px rgba(61,224,208,.42)}
.btn-primary .arr{transition:transform .18s var(--ease)}
.btn-primary:hover .arr{transform:translateX(4px)}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:rgba(122,152,224,.045)}
.btn-ghost:hover{border-color:rgba(61,224,208,.5);color:var(--cyan);background:rgba(61,224,208,.05)}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:30;
  background:rgba(10,14,26,.66);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-soft);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:11px;text-decoration:none;font-family:'Space Grotesk',sans-serif;font-size:22px;font-weight:700;letter-spacing:-0.02em}
.logo svg{width:30px;height:30px}
.nav-links{display:flex;gap:30px;align-items:center;font-size:15px}
.nav-links a{text-decoration:none;color:var(--ink-soft);transition:color .15s;position:relative}
.nav-links a:not(.nav-cta)::after{
  content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;background:var(--grad);transition:width .25s var(--ease);
}
.nav-links a:not(.nav-cta):hover{color:var(--ink)}
.nav-links a:not(.nav-cta):hover::after{width:100%}
.nav-links a[aria-current="page"]{color:var(--ink)}
.nav-links a[aria-current="page"]::after{width:100%}
.nav-cta{font-weight:600;color:var(--cyan) !important}
@media(max-width:900px){.nav-links a:not(.nav-cta){display:none}}

/* ---------- hero (accueil) ---------- */
.hero{padding:100px 0 110px;position:relative;overflow:hidden;border-top:none}
.hero-glow{
  position:absolute;top:-180px;right:-140px;width:720px;height:720px;pointer-events:none;
  background:radial-gradient(circle, rgba(124,108,255,.17) 0%, transparent 60%);z-index:0;
}
.hero-glow-2{
  position:absolute;bottom:-260px;left:-180px;width:600px;height:600px;pointer-events:none;
  background:radial-gradient(circle, rgba(61,224,208,.08) 0%, transparent 60%);z-index:0;
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:60px;align-items:center;position:relative;z-index:1}
@media(max-width:920px){.hero-grid{grid-template-columns:1fr}.hero-art{max-width:460px;margin:12px auto 0}}
.hero h1{font-size:clamp(42px,5.8vw,70px);margin-bottom:26px;font-weight:700}
.hero p.lead{font-size:19px;color:var(--ink-soft);max-width:545px;margin-bottom:38px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-note{font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--ink-dim);margin-top:24px;letter-spacing:.02em}

/* ---------- hero (pages service) ---------- */
.page-hero{padding:92px 0 84px;position:relative;overflow:hidden;border-top:none}
.page-hero .crumb{
  font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--ink-dim);margin-bottom:26px;letter-spacing:.05em;
}
.page-hero .crumb a{text-decoration:none;transition:color .15s}
.page-hero .crumb a:hover{color:var(--cyan)}
.page-hero h1{font-size:clamp(36px,5vw,58px);margin-bottom:24px;font-weight:700;max-width:820px}
.page-hero p.lead{font-size:19px;color:var(--ink-soft);max-width:640px;margin-bottom:36px}

/* ---------- animations ---------- */
.rise{opacity:0;transform:translateY(26px);animation:rise .9s var(--ease) forwards}
.rise.d1{animation-delay:.08s}.rise.d2{animation-delay:.2s}.rise.d3{animation-delay:.34s}.rise.d4{animation-delay:.5s}.rise.d5{animation-delay:.66s}
@keyframes rise{to{opacity:1;transform:none}}
.draw{stroke-dasharray:300;stroke-dashoffset:300;animation:draw 1.6s var(--ease) forwards}
.draw.dd1{animation-delay:.9s}.draw.dd2{animation-delay:1.05s}.draw.dd3{animation-delay:1.2s}
.draw.dd4{animation-delay:1.35s}.draw.dd5{animation-delay:1.5s}.draw.dd6{animation-delay:1.65s}
@keyframes draw{to{stroke-dashoffset:0}}
.pop{opacity:0;transform:scale(.4);transform-box:fill-box;transform-origin:center;animation:pop .5s var(--ease) forwards}
.pop.pd1{animation-delay:1.1s}.pop.pd2{animation-delay:1.25s}.pop.pd3{animation-delay:1.4s}.pop.pd4{animation-delay:1.55s}.pop.pd5{animation-delay:.8s}
@keyframes pop{to{opacity:1;transform:scale(1)}}
.node-pulse{animation:pulse 3.6s ease-in-out 2.2s infinite}
@keyframes pulse{0%,100%{opacity:.55}50%{opacity:1}}
.flow{stroke-dasharray:4 8;animation:flow 2.6s linear 2.4s infinite}
@keyframes flow{to{stroke-dashoffset:-24}}
.float{animation:float 8s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.annot{font-family:'JetBrains Mono',monospace;font-size:9.5px;fill:var(--ink-dim);letter-spacing:.08em}
.art-frame{stroke:var(--line)}
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.lag1{transition-delay:.1s}.reveal.lag2{transition-delay:.2s}.reveal.lag3{transition-delay:.3s}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rise,.pop,.draw{animation:none;opacity:1;transform:none;stroke-dashoffset:0}
  .node-pulse,.flow,.float{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- sections ---------- */
section{padding:100px 0;border-top:1px solid var(--line-soft);position:relative}
.planche{
  font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:.17em;text-transform:uppercase;
  color:var(--ink-dim);display:flex;justify-content:space-between;border-bottom:1px solid var(--line);
  padding-bottom:12px;margin-bottom:56px;
}
h2{font-size:clamp(31px,3.9vw,46px);margin-bottom:20px;max-width:780px}
.sub{font-size:18px;color:var(--ink-soft);max-width:670px}

/* ---------- cartes friction ---------- */
.pain-list{margin-top:50px;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:720px){.pain-list{grid-template-columns:1fr}}
.pain{
  padding:28px 30px;border:1px solid var(--line);border-radius:14px;
  background:linear-gradient(180deg,var(--panel) 0%,var(--night-2) 100%);
  transition:border-color .25s,transform .25s var(--ease);
}
.pain:hover{border-color:rgba(61,224,208,.3);transform:translateY(-3px)}
.pain .mono{font-size:11.5px;color:var(--cyan);display:block;margin-bottom:11px;letter-spacing:.11em}
.pain p{font-size:16px;color:var(--ink-soft)}

/* ---------- cartes offre / service ---------- */
.offers{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:56px}
@media(max-width:940px){.offers{grid-template-columns:1fr;max-width:560px}}
.offer{
  background:linear-gradient(180deg,var(--panel) 0%,var(--night-2) 100%);
  border:1px solid var(--line);border-radius:18px;display:flex;flex-direction:column;
  position:relative;overflow:hidden;
  transition:transform .25s var(--ease),border-color .25s,box-shadow .25s;
}
.offer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);opacity:.45;transition:opacity .25s}
.offer::after{
  content:"";position:absolute;top:-70px;right:-70px;width:190px;height:190px;border-radius:50%;
  background:radial-gradient(circle, rgba(124,108,255,.14) 0%, transparent 66%);
  opacity:0;transition:opacity .3s;pointer-events:none;
}
.offer:hover{transform:translateY(-5px);border-color:rgba(61,224,208,.38);box-shadow:0 22px 60px rgba(0,0,0,.45)}
.offer:hover::before{opacity:1}
.offer:hover::after{opacity:1}
.offer-head{padding:30px 30px 22px;border-bottom:1px solid var(--line-soft)}
.offer-ref{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.13em;color:var(--ink-dim);text-transform:uppercase;margin-bottom:16px;display:flex;justify-content:space-between}
.offer h3{font-size:24px;margin-bottom:11px}
.offer .pitch{font-size:15.5px;color:var(--ink-soft);min-height:80px}
.offer-body{padding:24px 30px;flex:1}
.offer-body ul{list-style:none}
.offer-body li{padding:8px 0 8px 27px;position:relative;font-size:15px;color:var(--ink-soft)}
.offer-body li::before{
  content:"";position:absolute;left:2px;top:15px;width:9px;height:9px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 9px rgba(61,224,208,.55);
}
.offer-foot{padding:22px 30px 30px;border-top:1px solid var(--line-soft)}
.price{font-family:'Space Grotesk',sans-serif;font-size:20px;font-weight:600;color:var(--ink)}
.price small{font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:400;color:var(--ink-dim);display:block;margin-top:3px;letter-spacing:.04em}
.offer .btn{width:100%;justify-content:center;margin-top:18px}

/* ---------- blocs de contenu service ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:52px}
@media(max-width:820px){.duo{grid-template-columns:1fr}}
.bloc{
  padding:32px;border:1px solid var(--line);border-radius:16px;
  background:linear-gradient(180deg,var(--panel) 0%,var(--night-2) 100%);
}
.bloc h3{font-size:21px;margin-bottom:12px}
.bloc h3 .tag{
  font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--cyan);display:block;margin-bottom:10px;
  letter-spacing:.13em;text-transform:uppercase;font-weight:400;
}
.bloc p{font-size:15.5px;color:var(--ink-soft);margin-bottom:14px}
.bloc ul{list-style:none;margin-top:4px}
.bloc li{padding:7px 0 7px 27px;position:relative;font-size:15px;color:var(--ink-soft)}
.bloc li::before{
  content:"";position:absolute;left:2px;top:14px;width:9px;height:9px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 9px rgba(61,224,208,.55);
}

/* ---------- méthode ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px}
@media(max-width:880px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.steps{grid-template-columns:1fr}}
.step{
  padding:30px 26px;border:1px solid var(--line);border-radius:14px;background:var(--panel);
  position:relative;transition:border-color .25s;
}
.step:hover{border-color:rgba(124,108,255,.4)}
.step .num{
  font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--cyan);margin-bottom:16px;letter-spacing:.1em;
  display:flex;align-items:center;gap:10px;
}
.step .num::after{content:"";flex:1;height:1px;background:var(--line)}
.step h3{font-size:18px;margin-bottom:11px}
.step p{font-size:14.5px;color:var(--ink-soft)}

/* ---------- à propos ---------- */
.founder{display:grid;grid-template-columns:300px 1fr;gap:58px;align-items:start;margin-top:8px}
@media(max-width:840px){.founder{grid-template-columns:1fr}}
.founder-card{
  background:linear-gradient(180deg,var(--panel-2) 0%,var(--night-2) 100%);
  border:1px solid var(--line);border-radius:18px;padding:32px;text-align:center;position:sticky;top:100px;
}
@media(max-width:840px){.founder-card{position:static}}
.founder-card .avatar{
  width:118px;height:118px;border-radius:22px;margin:0 auto 20px;
  background:var(--grad);display:flex;align-items:center;justify-content:center;
  font-family:'Space Grotesk',sans-serif;font-size:46px;font-weight:700;color:#07101A;box-shadow:var(--glow);
}
.founder-card .name{font-family:'Space Grotesk',sans-serif;font-size:20px;font-weight:600;margin-bottom:9px}
.founder-card .mono{font-size:11.5px;color:var(--ink-dim);line-height:1.85}
.founder-text p{margin-bottom:19px;font-size:17px;color:var(--ink-soft)}
.founder-text strong{font-weight:600;color:var(--ink)}

/* ---------- FAQ ---------- */
.faq{max-width:790px;margin-top:48px}
details{border-bottom:1px solid var(--line);padding:6px 0}
summary{
  font-family:'Space Grotesk',sans-serif;font-size:19px;font-weight:500;padding:21px 42px 21px 0;cursor:pointer;
  list-style:none;position:relative;color:var(--ink);transition:color .15s;
}
summary:hover{color:var(--cyan)}
summary::-webkit-details-marker{display:none}
summary::after{
  content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  font-family:'JetBrains Mono',monospace;font-size:22px;color:var(--cyan);transition:transform .22s var(--ease);
}
details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
details p{padding:0 0 25px;color:var(--ink-soft);font-size:16px;max-width:710px}

/* ---------- CTA final ---------- */
.final{position:relative;overflow:hidden;padding:120px 0}
.final::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(ellipse 62% 100% at 50% 100%, rgba(124,108,255,.16) 0%, transparent 68%);
}
.final .wrap{position:relative;z-index:1;text-align:center}
.final h2{margin:0 auto 20px;max-width:660px}
.final .sub{margin:0 auto 38px}
.final .hero-actions{justify-content:center}

/* ---------- liens croisés services ---------- */
.crosslinks{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:52px}
@media(max-width:720px){.crosslinks{grid-template-columns:1fr}}
.crosslink{
  display:block;text-decoration:none;padding:26px 28px;border:1px solid var(--line);border-radius:14px;
  background:var(--panel);transition:border-color .25s,transform .25s var(--ease);
}
.crosslink:hover{border-color:rgba(61,224,208,.4);transform:translateY(-3px)}
.crosslink .tag{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--cyan);letter-spacing:.13em;text-transform:uppercase;display:block;margin-bottom:10px}
.crosslink strong{font-family:'Space Grotesk',sans-serif;font-size:19px;font-weight:600;display:block;margin-bottom:6px}
.crosslink span{font-size:14.5px;color:var(--ink-soft)}

/* ---------- footer ---------- */
footer{background:var(--night-2);padding:44px 0 36px;border-top:1px solid var(--line-soft)}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:32px;margin-bottom:32px}
@media(max-width:720px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h4{font-family:'Space Grotesk',sans-serif;font-size:15px;margin-bottom:14px;color:var(--ink)}
.foot-grid ul{list-style:none}
.foot-grid li{margin-bottom:9px}
.foot-grid a{text-decoration:none;color:var(--ink-soft);font-size:14.5px;transition:color .15s}
.foot-grid a:hover{color:var(--cyan)}
.foot-grid p{font-size:14.5px;color:var(--ink-soft);max-width:300px}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--ink-dim);border-top:1px solid var(--line-soft);padding-top:26px}
.foot a{text-decoration:none;transition:color .15s}
.foot a:hover{color:var(--cyan)}

.ph{color:var(--violet);font-style:normal;border-bottom:1px dashed rgba(124,108,255,.4)}

/* ============================================================
   V3 — Motion design & liaisons
   ============================================================ */

/* ---- fil conducteur : les sections sont reliées entre elles ---- */
section{overflow:visible}
.linked::before{
  content:"";position:absolute;top:-52px;left:50%;transform:translateX(-50%);
  width:1px;height:52px;
  background:linear-gradient(to bottom, transparent, rgba(61,224,208,.5));
}
.linked::after{
  content:"";position:absolute;top:-5px;left:50%;transform:translateX(-50%);
  width:10px;height:10px;border-radius:50%;
  background:var(--night);border:2px solid var(--cyan);
  box-shadow:0 0 12px rgba(61,224,208,.55);
  animation:pulse 3.4s ease-in-out infinite;
}

/* ---- impulsions qui voyagent sur les lignes SVG ---- */
@media (prefers-reduced-motion:reduce){ .pulse-dot{display:none} }

/* ---- bandeau outils défilant ---- */
.ticker{
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  padding:20px 0;overflow:hidden;position:relative;background:rgba(13,18,32,.5);
}
.ticker::before,.ticker::after{
  content:"";position:absolute;top:0;bottom:0;width:120px;z-index:2;pointer-events:none;
}
.ticker::before{left:0;background:linear-gradient(to right,var(--night),transparent)}
.ticker::after{right:0;background:linear-gradient(to left,var(--night),transparent)}
.ticker-track{
  display:flex;gap:0;width:max-content;animation:ticker 36s linear infinite;
}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker-track span{
  font-family:'JetBrains Mono',monospace;font-size:13px;letter-spacing:.1em;
  color:var(--ink-dim);text-transform:uppercase;white-space:nowrap;
  display:inline-flex;align-items:center;
}
.ticker-track span::after{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--grad);
  display:inline-block;margin:0 26px;box-shadow:0 0 8px rgba(61,224,208,.5);
}
@keyframes ticker{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.ticker-track{animation:none}}

/* ---- hero 2 colonnes pour pages service ---- */
.page-hero .hero-grid2{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
@media(max-width:920px){.page-hero .hero-grid2{grid-template-columns:1fr}.page-hero .hero-art{max-width:440px;margin:8px auto 0}}

/* ---- cartes friction : coin schématique ---- */
.pain{position:relative}
.pain::after{
  content:"";position:absolute;top:14px;right:14px;width:22px;height:22px;
  border-top:1px solid var(--line);border-right:1px solid var(--line);
  transition:border-color .25s;
}
.pain:hover::after{border-color:rgba(61,224,208,.5)}

/* ---- blocs service : ligne de connexion au hover ---- */
.bloc{position:relative;overflow:hidden;transition:border-color .25s,transform .25s var(--ease)}
.bloc::before{
  content:"";position:absolute;top:0;left:-100%;width:100%;height:2px;
  background:var(--grad);transition:left .45s var(--ease);
}
.bloc:hover{border-color:rgba(61,224,208,.35);transform:translateY(-3px)}
.bloc:hover::before{left:0}

/* ---- steps reliés par un fil ---- */
.steps{position:relative}
.steps::before{
  content:"";position:absolute;top:44px;left:4%;right:4%;height:1px;z-index:0;
  background:repeating-linear-gradient(to right, rgba(61,224,208,.35) 0 6px, transparent 6px 14px);
}
@media(max-width:880px){.steps::before{display:none}}
.step{z-index:1}
.step .num::before{
  content:"";width:9px;height:9px;border-radius:50%;background:var(--grad);
  box-shadow:0 0 9px rgba(61,224,208,.55);flex:0 0 auto;
}