/* =========================================================
   Agence Référencement Arras, Design system "Dark Neon"
   ========================================================= */

:root{
  --bg:#070a13;
  --bg-2:#0c1120;
  --bg-3:#111a30;
  --surface:rgba(255,255,255,.03);
  --surface-2:rgba(255,255,255,.05);
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.16);
  --txt:#e8ecf6;
  --txt-soft:#a7b0c6;
  --txt-dim:#6b7690;
  --brand:#00e5c0;      /* cyan/menthe néon */
  --brand-2:#7c5cff;    /* violet électrique */
  --brand-3:#ff5d9e;    /* rose accent */
  --grad:linear-gradient(120deg,#00e5c0 0%,#7c5cff 55%,#ff5d9e 100%);
  --grad-soft:linear-gradient(120deg,rgba(0,229,192,.15),rgba(124,92,255,.15));
  --shadow:0 20px 60px -20px rgba(0,0,0,.7);
  --radius:18px;
  --radius-lg:26px;
  --maxw:1180px;
  --font:'Space Grotesk',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --font-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--txt);
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

h1,h2,h3,h4{font-family:var(--font);font-weight:700;line-height:1.12;letter-spacing:-.02em}
h1{font-size:clamp(2.3rem,5.5vw,4rem)}
h2{font-size:clamp(1.8rem,4vw,2.9rem)}
h3{font-size:clamp(1.25rem,2.2vw,1.6rem)}
p{color:var(--txt-soft)}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:clamp(64px,10vw,120px) 0;position:relative}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font);font-size:.8rem;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--brand);
  padding:7px 14px;border:1px solid var(--border-strong);border-radius:100px;
  background:var(--surface);margin-bottom:22px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 12px var(--brand)}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.lead{font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--txt-soft);max-width:60ch}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--font);font-weight:600;font-size:1rem;
  padding:15px 28px;border-radius:100px;cursor:pointer;border:1px solid transparent;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease;
  will-change:transform;
}
.btn-primary{background:var(--grad);color:#04121a;box-shadow:0 10px 30px -8px rgba(0,229,192,.5)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px -10px rgba(124,92,255,.6)}
.btn-ghost{background:var(--surface);border-color:var(--border-strong);color:var(--txt)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px)}
.btn svg{width:18px;height:18px}

/* ---------- Background FX ---------- */
.bg-fx{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;animation:float 18s ease-in-out infinite}
.blob.b1{width:520px;height:520px;background:radial-gradient(circle,#00e5c0,transparent 70%);top:-120px;left:-100px}
.blob.b2{width:600px;height:600px;background:radial-gradient(circle,#7c5cff,transparent 70%);top:30%;right:-160px;animation-delay:-6s}
.blob.b3{width:460px;height:460px;background:radial-gradient(circle,#ff5d9e,transparent 70%);bottom:-140px;left:35%;animation-delay:-12s}
.grid-overlay{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:60px 60px;mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
  opacity:.4}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-40px) scale(1.08)}}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;transition:background .3s,border-color .3s,backdrop-filter .3s;border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(7,10,19,.8);backdrop-filter:blur(14px);border-bottom-color:var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:11px;font-family:var(--font);font-weight:700;font-size:1.15rem;letter-spacing:-.02em}
.logo .mark{width:34px;height:34px;border-radius:10px;background:var(--grad);display:grid;place-items:center;color:#04121a;font-weight:800;box-shadow:0 6px 18px -6px rgba(0,229,192,.6)}
.logo small{display:block;font-family:var(--font-body);font-weight:500;font-size:.68rem;letter-spacing:.05em;color:var(--txt-dim);margin-top:-2px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{font-size:.95rem;color:var(--txt-soft);padding:9px 15px;border-radius:100px;transition:color .2s,background .2s}
.nav-links a:hover,.nav-links a.active{color:var(--txt);background:var(--surface-2)}
.nav-cta{margin-left:10px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:26px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{padding:clamp(60px,9vw,110px) 0 clamp(50px,7vw,90px);position:relative}
.hero-inner{max-width:820px}
.hero h1{margin-bottom:24px}
.hero .lead{margin-bottom:36px;font-size:clamp(1.1rem,1.8vw,1.35rem)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:52px}
.hero-typed{color:var(--brand);border-right:2px solid var(--brand);padding-right:3px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border-top:1px solid var(--border);padding-top:36px}
.stat .num{font-family:var(--font);font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:700;line-height:1}
.stat .lbl{font-size:.85rem;color:var(--txt-dim);margin-top:6px}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px;transition:transform .3s,border-color .3s,background .3s;position:relative;overflow:hidden;
}
.card::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-6px);border-color:var(--border-strong)}
.card:hover::before{opacity:1}
.card>*{position:relative}
.card .ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--grad);color:#04121a;margin-bottom:18px}
.card .ico svg{width:26px;height:26px}
.card h3{margin-bottom:10px}
.card p{font-size:.96rem}
.card .more{display:inline-flex;align-items:center;gap:7px;margin-top:16px;color:var(--brand);font-family:var(--font);font-weight:600;font-size:.9rem}
.card .more svg{width:15px;height:15px;transition:transform .25s}
.card:hover .more svg{transform:translateX(4px)}

/* Split content */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,6vw,80px);align-items:center}
.split.rev .split-media{order:-1}
.media-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}

/* ---------- Visuels éditoriaux ---------- */
.content-visual{
  width:100%;margin:0 0 clamp(34px,5vw,58px);border:1px solid var(--border-strong);
  border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-2);box-shadow:var(--shadow);
  position:relative;isolation:isolate;
}
.content-visual::after{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;box-shadow:inset 0 0 0 1px rgba(255,255,255,.025)}
.content-photo img{width:100%;aspect-ratio:8/5;object-fit:cover}
.content-visual figcaption{padding:13px 18px;color:var(--txt-dim);font-size:.82rem;line-height:1.45;border-top:1px solid var(--border);background:rgba(7,10,19,.84)}
.content-infographic{padding:clamp(22px,4vw,38px);background:
  radial-gradient(circle at 15% 10%,rgba(0,229,192,.13),transparent 34%),
  radial-gradient(circle at 85% 90%,rgba(124,92,255,.16),transparent 38%),var(--bg-2)}
.content-infographic svg{display:block;width:100%;height:auto;min-height:260px}
.content-infographic .info-kicker{fill:#00e5c0;fill:var(--brand,#00e5c0);font-family:var(--font);font-size:15px;font-weight:700;letter-spacing:2px;text-transform:uppercase}
.content-infographic .info-title{fill:#e8ecf6;fill:var(--txt,#e8ecf6);font-family:var(--font);font-size:30px;font-weight:700}
.content-infographic .info-label{fill:#e8ecf6;fill:var(--txt,#e8ecf6);font-family:var(--font);font-size:17px;font-weight:650}
.content-infographic .info-detail{fill:#a7b0c6;fill:var(--txt-soft,#a7b0c6);font-family:var(--font-body);font-size:13px}
.content-infographic .info-line{stroke:url(#infoGradient);stroke-width:3;stroke-linecap:round}
.content-infographic .info-card{fill:#151d32;stroke:#3b4563;stroke-width:1.5}
.content-infographic .info-dot{fill:#0c1120;stroke:#00e5c0;stroke:var(--brand,#00e5c0);stroke-width:3}

@media(max-width:620px){
  .content-infographic{padding:18px 14px}
  .content-infographic svg{min-height:230px}
  .content-infographic .info-title{font-size:24px}
  .content-infographic .info-label{font-size:15px}
}

/* Steps / methode */
.steps{counter-reset:step;display:grid;gap:20px}
.step{display:flex;gap:22px;padding:24px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);transition:border-color .3s,transform .3s}
.step:hover{border-color:var(--border-strong);transform:translateX(6px)}
.step .n{counter-increment:step;flex:0 0 auto;width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font-family:var(--font);font-weight:700;font-size:1.15rem;background:var(--grad-soft);border:1px solid var(--border-strong);color:var(--brand)}
.step .n::before{content:counter(step,decimal-leading-zero)}
.step h3{margin-bottom:6px;font-size:1.2rem}

/* Feature list */
.checklist{display:grid;gap:14px;margin-top:8px}
.checklist li{display:flex;gap:12px;align-items:flex-start;color:var(--txt-soft)}
.checklist li svg{flex:0 0 auto;width:22px;height:22px;color:var(--brand);margin-top:2px}

/* Comparison table */
.compare{width:100%;border-collapse:collapse;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.compare th,.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--border);font-size:.96rem}
.compare th{font-family:var(--font);background:var(--surface-2);color:var(--txt)}
.compare td{color:var(--txt-soft)}
.compare tr:last-child td{border-bottom:0}
.compare td:first-child{color:var(--txt);font-weight:500}

/* FAQ */
.faq{display:grid;gap:14px;max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:0;cursor:pointer;color:var(--txt);
  font-family:var(--font);font-weight:600;font-size:1.05rem;padding:22px 24px;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq-q .plus{flex:0 0 auto;width:24px;height:24px;position:relative;transition:transform .3s}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--brand);border-radius:2px;top:50%;left:50%;transform:translate(-50%,-50%)}
.faq-q .plus::before{width:14px;height:2px}
.faq-q .plus::after{width:2px;height:14px;transition:transform .3s}
.faq-item.open .plus::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 22px;font-size:.98rem}

/* CTA band */
.cta-band{background:var(--grad);border-radius:var(--radius-lg);padding:clamp(40px,6vw,68px);text-align:center;color:#04121a;position:relative;overflow:hidden}
.cta-band h2{color:#04121a;margin-bottom:14px}
.cta-band p{color:#0a2c30;max-width:56ch;margin:0 auto 28px;font-weight:500}
.cta-band .btn-dark{background:#070a13;color:#fff}
.cta-band .btn-dark:hover{transform:translateY(-3px);box-shadow:0 16px 40px -10px rgba(0,0,0,.6)}

/* Zones / tags */
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.tag{padding:8px 16px;border:1px solid var(--border-strong);border-radius:100px;font-size:.88rem;color:var(--txt-soft);background:var(--surface);transition:.25s}
.tag:hover{color:var(--brand);border-color:var(--brand)}

/* Prose (mentions légales) */
.prose{max-width:820px;margin:0 auto}
.prose h2{margin:44px 0 16px;font-size:1.6rem}
.prose h3{margin:28px 0 10px}
.prose p,.prose li{color:var(--txt-soft);margin-bottom:12px}
.prose ul{list-style:disc;padding-left:22px;margin-bottom:16px}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--txt)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,60px);align-items:start}
.info-list{display:grid;gap:22px;margin-top:10px}
.info-item{display:flex;gap:16px;align-items:flex-start}
.info-item .ico{flex:0 0 auto;width:48px;height:48px;border-radius:12px;background:var(--surface-2);border:1px solid var(--border);display:grid;place-items:center;color:var(--brand)}
.info-item .ico svg{width:22px;height:22px}
.info-item h4{font-family:var(--font);font-size:1rem;margin-bottom:2px}
.info-item a,.info-item span{color:var(--txt-soft);font-size:.96rem}
.info-item a:hover{color:var(--brand)}
.form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(24px,4vw,36px)}
.field{margin-bottom:18px}
.field label{display:block;font-family:var(--font);font-size:.9rem;margin-bottom:8px;color:var(--txt)}
.field input,.field textarea,.field select{
  width:100%;padding:14px 16px;border-radius:12px;border:1px solid var(--border-strong);
  background:var(--bg-2);color:var(--txt);font-family:var(--font-body);font-size:1rem;transition:border-color .25s,box-shadow .25s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,229,192,.15)}
.field textarea{resize:vertical;min-height:130px}
.form-note{font-size:.82rem;color:var(--txt-dim);margin-top:6px}
.form-success{display:none;padding:16px;border-radius:12px;background:rgba(0,229,192,.1);border:1px solid var(--brand);color:var(--brand);font-size:.95rem;margin-top:14px}

/* Breadcrumb */
.breadcrumb{font-size:.85rem;color:var(--txt-dim);padding-top:26px}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{margin:0 8px;opacity:.5}

/* Section heading block */
.sec-head{max-width:680px;margin-bottom:52px}
.sec-head.center{margin-left:auto;margin-right:auto}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);padding:70px 0 34px;margin-top:40px;position:relative}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:48px}
.footer-grid h4{font-family:var(--font);font-size:.85rem;letter-spacing:.1em;text-transform:uppercase;color:var(--txt-dim);margin-bottom:18px}
.footer-grid a{display:block;color:var(--txt-soft);font-size:.94rem;padding:5px 0;transition:color .2s}
.footer-grid a:hover{color:var(--brand)}
.footer-about p{font-size:.94rem;margin:14px 0 18px}
.socials{display:flex;gap:12px}
.socials a{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);display:grid;place-items:center;color:var(--txt-soft);transition:.25s}
.socials a:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-3px)}
.socials svg{width:18px;height:18px}
.footer-bottom{border-top:1px solid var(--border);padding-top:26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.85rem;color:var(--txt-dim)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- Reveal animation ---------- */
[data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
[data-reveal].in{opacity:1;transform:none}
[data-reveal-delay="1"]{transition-delay:.08s}
[data-reveal-delay="2"]{transition-delay:.16s}
[data-reveal-delay="3"]{transition-delay:.24s}
[data-reveal-delay="4"]{transition-delay:.32s}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:820px){
  .nav-links{position:fixed;inset:76px 0 auto 0;flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(7,10,19,.97);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);
    padding:18px 24px 26px;transform:translateY(-140%);transition:transform .35s ease;box-shadow:var(--shadow)}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:13px 14px}
  .nav-cta{margin:8px 0 0}
  .burger{display:flex}
  .split{grid-template-columns:1fr}
  .split.rev .split-media{order:0}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:28px}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{width:100%}
  .stats{grid-template-columns:1fr 1fr}
}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  [data-reveal]{opacity:1;transform:none}
}

/* ---------- Bandeau cookies ---------- */
.cookie-banner{position:fixed;left:16px;right:16px;bottom:16px;z-index:200;max-width:600px;margin:0 auto;
  background:rgba(12,17,32,.97);backdrop-filter:blur(16px);border:1px solid var(--border-strong);
  border-radius:var(--radius-lg);padding:24px 26px;box-shadow:var(--shadow);
  transform:translateY(150%);opacity:0;transition:transform .55s cubic-bezier(.22,1,.36,1),opacity .55s}
.cookie-banner.show{transform:none;opacity:1}
.cookie-banner h4{font-family:var(--font);font-size:1.1rem;margin-bottom:8px}
.cookie-banner p{font-size:.92rem;color:var(--txt-soft);margin-bottom:18px}
.cookie-banner p a{color:var(--brand);text-decoration:underline;text-underline-offset:2px}
.cookie-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.cookie-actions .btn{padding:12px 22px;font-size:.92rem}
.cookie-actions .btn-mini{background:var(--surface-2);border:1px solid var(--border-strong);color:var(--txt);
  border-radius:100px;font-family:var(--font);font-weight:600;cursor:pointer;padding:12px 22px;font-size:.92rem;transition:border-color .25s,color .25s,transform .25s}
.cookie-actions .btn-mini:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
@media(max-width:520px){.cookie-banner{padding:20px}.cookie-actions{flex-direction:column;align-items:stretch}.cookie-actions .btn,.cookie-actions .btn-mini{width:100%}}