/* Vitrine BS Learning — www.bs-learning.com */
:root{
  --ink:#141A22; --ink-2:#3B4552; --muted:#5E6875; --line:#DCE1E8;
  --paper:#FFFFFF; --mist:#F3F5F8;
  --yellow:#F2BD00; --green:#1E9E5A; --blue:#2F5BEA;
  --night:#141A22; --night-2:#1D2530; --night-line:#2C3644; --night-ink:#E9EDF2; --night-muted:#93A0B0;
  --f:"Readex Pro",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f);font-size:17px;line-height:1.6;font-weight:300}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{margin:0;font-weight:600;line-height:1.15;letter-spacing:-.015em}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:6px;z-index:10}
.skip:focus{left:8px}

/* boutons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;text-decoration:none;font:500 16px/1 var(--f);padding:15px 22px;border-radius:999px;border:2px solid var(--ink);cursor:pointer;transition:background .15s,color .15s}
.btn:hover{background:#2A3441;border-color:#2A3441}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-sm{padding:10px 16px;font-size:15px;white-space:nowrap}
.btn[disabled]{opacity:.6;cursor:progress}

/* en-tête */
.top{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.top.scrolled{border-bottom-color:var(--line)}
.top-in{display:flex;align-items:center;gap:32px;height:72px}
.brand img{height:32px;width:auto}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a,.link-login{white-space:nowrap;text-decoration:none;font-size:15px;font-weight:400;color:var(--ink-2)}
.nav a:hover,.link-login:hover{color:var(--ink);text-decoration:underline;text-underline-offset:5px}
.top-cta{display:flex;align-items:center;gap:20px}

/* hero */
.hero{padding:72px 0 96px}
.hero-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.02fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(38px,4.6vw,60px);font-weight:600;letter-spacing:-.03em;line-height:1.06}
.lead{margin-top:22px;font-size:19px;color:var(--ink-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-facts{list-style:none;padding:0;margin:36px 0 0;display:flex;flex-wrap:wrap;gap:10px 28px;font-size:15px;color:var(--muted)}
.hero-facts strong{color:var(--ink);font-weight:500}

/* console de logs */
.console{margin:0;background:var(--night);color:var(--night-ink);border-radius:18px;overflow:hidden;box-shadow:0 30px 60px -30px rgba(20,26,34,.55);display:flex;flex-direction:column}
.console-bar{display:flex;align-items:center;gap:14px;padding:13px 18px;border-bottom:1px solid var(--night-line);font-size:13px;color:var(--night-muted)}
.dots{display:flex;gap:6px}.dots i{width:10px;height:10px;border-radius:50%;background:var(--night-line)}
.console-title{font-family:var(--mono);font-size:12.5px}
.live{margin-left:auto;display:flex;align-items:center;gap:7px;font-size:12.5px}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(30,158,90,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 7px rgba(30,158,90,0)}100%{box-shadow:0 0 0 0 rgba(30,158,90,0)}}
.stream{list-style:none;margin:0;padding:14px 18px 4px;height:258px;overflow:hidden;font:12.5px/1.75 var(--mono);display:flex;flex-direction:column;justify-content:flex-end;mask-image:linear-gradient(transparent,#000 28%)}
.stream li{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#C5CEDA}
.stream li.new{animation:in .35s ease-out}
@keyframes in{from{opacity:0;transform:translateY(6px)}}
.stream .t{color:#6E7C8E}.stream .h{color:#9DB4FF}
.lv{display:inline-block;min-width:5.2ch;font-weight:600}
.lv-info{color:#7FA2FF}.lv-warn{color:var(--yellow)}.lv-err{color:#FF7A6E}
.stream li.hit{background:rgba(242,189,0,.09);margin:0 -18px;padding:0 18px}
.insight{margin:10px 14px 14px;background:var(--night-2);border:1px solid var(--night-line);border-left:3px solid var(--yellow);border-radius:10px;padding:13px 15px;min-height:96px}
.insight-tag{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:500;color:var(--yellow)}
.insight-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--yellow)}
.insight p{margin-top:5px;font-size:14.5px;line-height:1.5;color:var(--night-ink)}
.insight p.typing::after{content:"";display:inline-block;width:7px;height:15px;margin-left:2px;vertical-align:-2px;background:var(--yellow);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.console figcaption{padding:12px 18px 15px;border-top:1px solid var(--night-line);font-size:13px;color:var(--night-muted)}

/* sections */
.section{padding:104px 0}
.section-head{max-width:720px;margin-bottom:56px}
.section-head h2,.sov h2,.platform h2,.trainers h2,.contact h2{font-size:clamp(30px,3.2vw,42px);letter-spacing:-.025em}
.section-head p{margin-top:16px;font-size:18px;color:var(--ink-2)}

/* parcours */
.track{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.6fr);gap:48px;padding:36px 0;border-top:1px solid var(--line)}
.track:last-of-type{border-bottom:1px solid var(--line)}
.track h3{font-size:24px;display:flex;align-items:center;gap:12px}
.node{flex:none;width:16px;height:16px;border-radius:50%;background:var(--tc);box-shadow:0 0 0 4px #fff,0 0 0 6px var(--tc)}
.track-intro p{margin-top:12px;color:var(--ink-2);max-width:26em}
.track-photo{margin:0 0 22px;border-radius:14px;overflow:hidden;aspect-ratio:16/10;background:var(--mist);position:relative}
.track-photo::after{content:"";position:absolute;left:0;right:0;bottom:0;height:5px;background:var(--tc)}
.track-photo img,.wide-photo img,.trainers-photo img{width:100%;height:100%;object-fit:cover}
.courses{list-style:none;margin:0;padding:0}
.courses li{display:grid;grid-template-columns:minmax(0,1fr) 13.5em 5.5em;gap:20px;align-items:baseline;padding:15px 0;border-bottom:1px dashed var(--line)}
.courses li:first-child{padding-top:4px}
.courses li:last-child{border-bottom:0}
.c-title{font-weight:500;line-height:1.4}
.c-who{font-size:15px;color:var(--muted)}
.c-len{font-size:15px;text-align:right;font-variant-numeric:tabular-nums;color:var(--ink-2)}
.note{font-size:15px;color:var(--muted);max-width:36em}
.catalog-cta{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}

/* souveraineté */
.sov{color:var(--night-ink);padding:120px 0;background:linear-gradient(90deg,rgba(20,26,34,.97) 0%,rgba(20,26,34,.9) 45%,rgba(20,26,34,.78) 100%),url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=1800&q=60") center/cover var(--night)}
.sov-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:72px}
.sov-head p{margin-top:18px;font-size:18px;color:#C2CBD7;max-width:30em}
.sov-points{margin:0;display:grid;gap:30px}
.sov-points div{padding-left:22px;border-left:2px solid var(--blue)}
.sov-points dt{font-size:20px;font-weight:500;color:#fff}
.sov-points dd{margin:8px 0 0;color:var(--night-muted)}

.approach-head{display:grid;gap:36px;margin-bottom:56px}
.wide-photo{margin:0;border-radius:18px;overflow:hidden;aspect-ratio:5/2;background:var(--mist)}
/* étapes : vraie séquence, donc numérotées */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;counter-reset:s;position:relative}
.steps::before{content:"";position:absolute;left:22px;right:calc(20% - 22px);top:21px;height:2px;background:var(--line)}
.steps li{counter-increment:s;padding-right:24px;position:relative}
.steps li::before{content:counter(s);display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:#fff;border:2px solid var(--ink);font-weight:600;margin-bottom:22px;position:relative}
.steps li:last-child::before{background:var(--yellow);border-color:var(--yellow)}
.steps h3{font-size:20px}
.steps p{margin-top:10px;color:var(--ink-2)}

/* plateforme */
.platform{background:var(--mist)}
.platform-in{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:72px;align-items:start}
.platform-in > div > p{margin:16px 0 28px;font-size:18px;color:var(--ink-2)}
.platform-list{margin:0}
.platform-list div{padding:22px 0;border-top:1px solid var(--line)}
.platform-list div:first-child{border-top:0;padding-top:0}
.platform-list dt{font-weight:500;font-size:19px}
.platform-list dd{margin:6px 0 0;color:var(--ink-2)}

/* formateurs */
.trainers-in{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:64px;align-items:center}
.trainers-photo{margin:0;border-radius:18px;overflow:hidden;aspect-ratio:9/10;background:var(--mist)}
.trainers p{max-width:34em}
.trainers p{margin-top:18px;font-size:20px;line-height:1.6;color:var(--ink-2)}

/* contact */
.contact{background:var(--mist)}
.contact-in{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);gap:72px;align-items:start}
.contact-text p{margin-top:16px;font-size:18px;color:var(--ink-2)}
.form{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px;display:grid;gap:18px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form label{display:grid;gap:7px;font-size:15px;font-weight:500}
.opt{font-weight:300;color:var(--muted)}
.form input,.form select,.form textarea{font:300 16px/1.4 var(--f);color:var(--ink);background:#fff;border:1.5px solid var(--line);border-radius:10px;padding:12px 13px;width:100%}
.form textarea{resize:vertical;min-height:120px}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,91,234,.18)}
.form [aria-invalid="true"]{border-color:#C63A2E}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.consent{font-size:14px;color:var(--muted)}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.form-msg{font-size:15px}
.form-msg.ok{color:var(--green);font-weight:500}
.form-msg.err{color:#C63A2E}

/* pied de page */
.foot{background:var(--night);color:var(--night-muted);padding:40px 0;font-size:15px}
.foot-in{display:flex;flex-wrap:wrap;align-items:center;gap:20px 36px}
.foot img{height:28px;width:auto}
.foot nav{display:flex;gap:22px}
.foot a{text-decoration:none;color:var(--night-ink)}
.foot a:hover{text-decoration:underline}
.foot p{margin-left:auto}
.foot p a{color:var(--night-muted);text-decoration:underline}

/* sécurité : rangées alternées photo / texte */
.security .section-head{margin-bottom:40px}
.sec-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:center;padding:48px 0}
.sec-row + .sec-row{border-top:1px solid var(--line)}
.sec-row:nth-of-type(even) .sec-photo{order:2}
.sec-photo{margin:0;border-radius:18px;overflow:hidden;aspect-ratio:54/39;background:var(--mist);position:relative}
.sec-photo img{width:100%;height:100%;object-fit:cover}
.sec-photo::after{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--tc)}
.sec-text h3{font-size:clamp(24px,2.3vw,30px);letter-spacing:-.02em}
.sec-lead{margin-top:14px;font-size:18px;color:var(--ink-2)}
.sec-points{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:10px}
.sec-points li{position:relative;padding-left:26px;line-height:1.5}
.sec-points li::before{content:"";position:absolute;left:2px;top:.5em;width:10px;height:10px;border-radius:50%;border:2.5px solid var(--tc)}
.sec-format{margin:22px 0 24px;font-size:15px;color:var(--muted)}
@media (max-width:1020px){
  .sec-row{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .sec-row:nth-of-type(even) .sec-photo{order:0}
  .sec-photo{aspect-ratio:16/10}
}

/* formation hybride */
.hybrid{background:var(--mist)}
.phases{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;position:relative}
.phases::before{content:"";position:absolute;left:8px;right:calc(33.33% - 8px);top:7px;height:3px;background:linear-gradient(90deg,var(--yellow),var(--green) 50%,var(--blue))}
.phases li{position:relative}
.phases .node{display:block;width:16px;height:16px;margin-bottom:28px;box-shadow:0 0 0 4px var(--mist),0 0 0 6px var(--tc)}
.phases h3{font-size:22px}
.phases p{margin-top:10px;color:var(--ink-2)}
.phases .phase-meta{margin-top:14px;font-size:15px;font-weight:500;color:var(--ink)}
.hybrid-example{margin-top:56px;padding:28px 32px;background:#fff;border-radius:18px;border:1px solid var(--line);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px 40px}
.hybrid-example p{max-width:44em;color:var(--ink-2)}
.hybrid-example strong{color:var(--ink);font-weight:600}

/* responsive */
@media (max-width:1020px){
  .hero-in,.sov-in,.platform-in,.contact-in,.trainers-in{grid-template-columns:1fr;gap:48px}
  .track-photo{max-width:560px}
  .trainers-photo{aspect-ratio:16/10}
  .wide-photo{aspect-ratio:16/9}
  .track{grid-template-columns:1fr;gap:20px}
  .steps{grid-template-columns:1fr 1fr;row-gap:44px}
  .phases{grid-template-columns:1fr;gap:36px;padding-left:34px}
  .phases::before{left:7px;right:auto;top:8px;bottom:8px;width:3px;height:auto;background:linear-gradient(180deg,var(--yellow),var(--green) 50%,var(--blue))}
  .phases .node{position:absolute;left:-34px;top:4px;margin:0}
  .steps::before{display:none}
}
@media (max-width:1060px){
  .nav{display:none}
  .top-cta{margin-left:auto}
}
@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .hero{padding:44px 0 64px}
  .section,.sov{padding:72px 0}
  .lead{font-size:17px}
  .link-login,.btn-contact{display:none}
  .stream{height:220px;font-size:11.5px}
  .dots{display:none}
  .console-title,.live{white-space:nowrap}
  .courses li{grid-template-columns:1fr auto;gap:4px 16px}
  .c-who{grid-column:1;grid-row:2}
  .c-len{grid-column:2;grid-row:1}
  .steps{grid-template-columns:1fr}
  .row{grid-template-columns:1fr}
  .form{padding:22px}
  .hybrid-example{padding:22px}
  .foot p{margin-left:0}
}
@media (prefers-reduced-motion:reduce){
  .pulse,.stream li.new,.insight p.typing::after{animation:none}
}