/* ============================================================
   Kayliss Digital — Design System v2
   Palette : navy profond + bleu institutionnel + accent cyan
   Typo    : Space Grotesk (titres) / Inter (corps)
   ============================================================ */
:root{
  --navy-950:#050E1E;
  --navy-900:#08182F;
  --navy-800:#0C2340;
  --navy-700:#123258;
  --blue-600:#0B5FCE;
  --blue-500:#1273E6;
  --blue-100:#E8F0FD;
  --cyan-400:#25D0F5;
  --cyan-500:#00B8DE;
  --teal-500:#12A594;
  --sand-50:#FAFBFC;
  --grey-900:#131A24;
  --grey-700:#41506A;
  --grey-500:#6B7A90;
  --grey-300:#D7DEE8;
  --grey-100:#EEF2F7;
  --white:#FFFFFF;
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(8,24,47,.06),0 2px 8px rgba(8,24,47,.05);
  --shadow-md:0 6px 24px rgba(8,24,47,.09);
  --shadow-lg:0 24px 60px rgba(5,14,30,.22);
  --maxw:1180px;
  --font-display:'Space Grotesk',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-body:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-body);color:var(--grey-900);background:var(--white);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue-600);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--navy-900);line-height:1.15;margin:0 0 .6em;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,4.4vw,3.4rem);font-weight:700}
h2{font-size:clamp(1.6rem,3vw,2.35rem);font-weight:700}
h3{font-size:1.22rem;font-weight:600}
p{margin:0 0 1.1em}
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:22px}
.section{padding:clamp(3.5rem,7vw,6rem) 0}
.section--tight{padding:clamp(2.5rem,5vw,4rem) 0}
.section--dark{background:var(--navy-950);color:#C9D6E6}
.section--dark h2,.section--dark h3{color:#fff}
.section--alt{background:var(--sand-50);border-block:1px solid var(--grey-100)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:.7rem 1rem;z-index:200}
.skip-link:focus{left:1rem;top:1rem}

/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--grey-100)}
.header-inner{display:flex;align-items:center;gap:1.5rem;min-height:74px}
.brand{display:flex;align-items:center;gap:.65rem;font-family:var(--font-display);font-weight:700;font-size:1.12rem;color:var(--navy-900);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--blue-600),var(--cyan-500));display:grid;place-items:center;color:#fff;font-weight:700;font-size:.95rem}
.brand small{display:block;font-family:var(--font-body);font-weight:500;font-size:.68rem;color:var(--grey-500);letter-spacing:.14em;text-transform:uppercase}
.nav{margin-left:auto;display:flex;align-items:center;gap:1.6rem}
.nav a{color:var(--grey-700);font-size:.95rem;font-weight:500}
.nav a:hover,.nav a[aria-current="page"]{color:var(--navy-900);text-decoration:none}
.nav a.btn--primary,.nav a.btn--primary:hover{color:#fff}
.nav a.btn--accent,.nav a.btn--accent:hover{color:#04283A}
.nav a.btn--ghost,.nav a.btn--ghost:hover{color:var(--navy-900)}
.nav-cta{margin-left:.4rem}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--grey-300);border-radius:10px;padding:.5rem .65rem;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--navy-900);margin:4px 0}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--font-body);font-weight:600;font-size:.95rem;
  padding:.85rem 1.5rem;border-radius:999px;border:1.5px solid transparent;cursor:pointer;transition:.18s;text-decoration:none!important;white-space:nowrap}
.btn--primary{background:var(--blue-600);color:#fff}
.btn--primary:hover{background:var(--blue-500);transform:translateY(-1px);box-shadow:0 10px 24px rgba(11,95,206,.28)}
.btn--accent{background:var(--cyan-500);color:#04283A}
.btn--accent:hover{background:var(--cyan-400);transform:translateY(-1px)}
.btn--ghost{border-color:var(--grey-300);color:var(--navy-900);background:#fff}
.btn--ghost:hover{border-color:var(--navy-900)}
.btn--light{border-color:rgba(255,255,255,.35);color:#fff}
.btn--light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn--sm{padding:.6rem 1.1rem;font-size:.88rem}
.btn--block{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;background:radial-gradient(1200px 600px at 78% -10%,rgba(37,208,245,.22),transparent 60%),linear-gradient(160deg,var(--navy-950),var(--navy-800) 65%,var(--navy-900));color:#DCE7F5;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(700px 480px at 70% 20%,#000,transparent 75%)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;gap:3.5rem;align-items:center;padding:clamp(3rem,7vw,5.5rem) 0 clamp(3rem,6vw,5rem)}
.hero h1{color:#fff;margin-top:1.1rem}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--cyan-400),#8BE3FF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-lead{font-size:1.13rem;color:#B9C9DD;max-width:56ch}
.hero-price{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.5rem 0 1.9rem}
.chip{display:inline-flex;align-items:center;gap:.45rem;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#E6EFFA;border-radius:999px;padding:.42rem .9rem;font-size:.85rem;font-weight:500}
.chip--accent{background:rgba(37,208,245,.14);border-color:rgba(37,208,245,.4);color:#B7EDFB}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:2.6rem;padding-top:1.9rem;border-top:1px solid rgba(255,255,255,.12)}
.hero-stats div strong{display:block;font-family:var(--font-display);font-size:1.9rem;color:#fff;line-height:1}
.hero-stats div span{font-size:.82rem;color:#93A7BF;letter-spacing:.02em}
.hero-visual{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.14)}
.badge{display:inline-flex;align-items:center;gap:.5rem;background:rgba(37,208,245,.12);border:1px solid rgba(37,208,245,.35);color:#B7EDFB;border-radius:999px;padding:.4rem .9rem;font-size:.82rem;font-weight:600;letter-spacing:.02em}
.badge--light{background:var(--blue-100);border-color:#CBDDF9;color:var(--blue-600)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--cyan-400);display:inline-block}

/* ---------- Logos ---------- */
.logos{padding:1.9rem 0;border-bottom:1px solid var(--grey-100)}
.logos p{text-align:center;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--grey-500);margin:0 0 1.1rem}
.logo-row{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:1.1rem 2.6rem}
.logo-row span{font-family:var(--font-display);font-weight:600;font-size:1.02rem;color:var(--navy-700);opacity:.78;letter-spacing:-.01em}

/* ---------- Grids & cards ---------- */
.grid{display:grid;gap:1.4rem}
.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:#fff;border:1px solid var(--grey-100);border-radius:var(--radius);padding:1.7rem;box-shadow:var(--shadow-sm);transition:.2s;height:100%;display:flex;flex-direction:column}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:#DCE5F1}
.card h3{margin-bottom:.5rem}
.card p{color:var(--grey-700);font-size:.95rem;margin:0}
.icon{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,rgba(11,95,206,.1),rgba(37,208,245,.14));display:grid;place-items:center;margin-bottom:1.1rem}
.icon svg{width:23px;height:23px;stroke:var(--blue-600);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ---------- Formation cards ---------- */
.f-card{position:relative;background:#fff;border:1px solid var(--grey-100);border-radius:var(--radius);padding:1.6rem;display:flex;flex-direction:column;gap:.75rem;box-shadow:var(--shadow-sm);transition:.2s;height:100%}
.f-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#D3DFEE}
.f-card .pill{align-self:flex-start;background:var(--blue-100);color:var(--blue-600);font-size:.74rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:.32rem .7rem;border-radius:999px}
.f-card h3{font-size:1.1rem;margin:0}
.f-card h3 a{color:var(--navy-900)}
.f-card h3 a:hover{text-decoration:none;color:var(--blue-600)}
.f-card .desc{color:var(--grey-700);font-size:.92rem;margin:0;flex:1}
.f-meta{display:flex;flex-wrap:wrap;gap:.5rem .9rem;font-size:.84rem;color:var(--grey-500);border-top:1px solid var(--grey-100);padding-top:.85rem}
.f-price{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem;font-size:.9rem;color:var(--grey-700)}
.f-price strong{font-family:var(--font-display);font-size:1.18rem;color:var(--navy-900)}
.f-price .tag{background:#E9F8F5;color:#0B7059;font-size:.72rem;font-weight:700;padding:.22rem .55rem;border-radius:6px;letter-spacing:.03em}

/* ---------- Filters ---------- */
.filters{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2rem}
.filters button{font-family:var(--font-body);font-size:.88rem;font-weight:500;color:var(--grey-700);background:#fff;border:1px solid var(--grey-300);border-radius:999px;padding:.5rem 1rem;cursor:pointer;transition:.15s}
.filters button:hover{border-color:var(--blue-600);color:var(--blue-600)}
.filters button[aria-pressed="true"]{background:var(--navy-900);border-color:var(--navy-900);color:#fff}
.f-card[hidden]{display:none}

/* ---------- Formation detail ---------- */
.f-hero{background:linear-gradient(160deg,var(--navy-950),var(--navy-800));color:#C9D6E6;padding:2.6rem 0 3rem}
.crumbs{font-size:.84rem;color:#8FA3BB;margin-bottom:1.4rem}
.crumbs a{color:#B9C9DD}
.f-hero h1{color:#fff;max-width:24ch}
.f-hero .lead{color:#B9C9DD;font-size:1.08rem;max-width:70ch}
.f-facts{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.4rem}
.f-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:3rem;align-items:start}
.aside-card{position:sticky;top:96px;background:#fff;border:1px solid var(--grey-100);border-radius:var(--radius);box-shadow:var(--shadow-md);padding:1.6rem}
.aside-card h3{font-size:1.05rem;margin-bottom:1rem}
.spec{display:flex;justify-content:space-between;gap:1rem;padding:.62rem 0;border-bottom:1px dashed var(--grey-100);font-size:.9rem}
.spec:last-of-type{border-bottom:0}
.spec dt{color:var(--grey-500)}
.spec dd{margin:0;color:var(--navy-900);font-weight:600;text-align:right}
.price-box{background:var(--sand-50);border:1px solid var(--grey-100);border-radius:var(--radius-sm);padding:1rem;margin:1rem 0}
.price-box .row{display:flex;justify-content:space-between;align-items:baseline;font-size:.9rem;color:var(--grey-700)}
.price-box .row strong{font-family:var(--font-display);font-size:1.25rem;color:var(--navy-900)}
.price-box .note{font-size:.78rem;color:var(--grey-500);margin:.6rem 0 0}
.prose{max-width:74ch}
.prose h2{font-size:1.55rem;margin:2.4rem 0 .9rem;padding-bottom:.5rem;border-bottom:2px solid var(--grey-100)}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.1rem;margin:1.7rem 0 .6rem;color:var(--blue-600)}
.prose p,.prose li{color:var(--grey-700)}
.prose ul,.prose ol{padding-left:1.25rem;margin:0 0 1.4rem}
.prose li{margin-bottom:.45rem}
.prose table{width:100%;border-collapse:collapse;margin:1rem 0 1.6rem;font-size:.92rem}
.prose th,.prose td{border:1px solid var(--grey-300);padding:.6rem .75rem;text-align:left}
.prose th{background:var(--grey-100);font-weight:600}
.prose strong{color:var(--navy-900)}
.note-band{background:var(--blue-100);border-left:4px solid var(--blue-600);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:1.1rem 1.3rem;margin:2rem 0;font-size:.94rem;color:var(--navy-900)}
.note-band p:last-child{margin:0}

/* ---------- Steps ---------- */
.steps{counter-reset:s;display:grid;gap:1.3rem;grid-template-columns:repeat(4,1fr)}
.step{position:relative;padding-top:1rem}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);font-family:var(--font-display);font-size:.95rem;font-weight:700;color:var(--cyan-500)}
.step h3{margin:.5rem 0 .4rem;font-size:1.05rem}
.step p{color:var(--grey-700);font-size:.92rem;margin:0}

/* ---------- FAQ ---------- */
.faq{max-width:920px;margin-inline:auto}
.faq details{border:1px solid var(--grey-100);border-radius:var(--radius-sm);background:#fff;margin-bottom:.7rem;padding:0 1.2rem;box-shadow:var(--shadow-sm)}
.faq summary{cursor:pointer;font-weight:600;color:var(--navy-900);padding:1.05rem 0;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-display);font-size:1.3rem;color:var(--blue-600);line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--grey-700);font-size:.95rem;padding-bottom:1.05rem;margin:0}

/* ---------- RSE band ---------- */
.rse-band{background:linear-gradient(120deg,#062B2A,#0B4A44 60%,#0E5F55);color:#CFECE6;border-radius:var(--radius-lg);padding:clamp(2rem,4vw,3rem);display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center}
.rse-band h2{color:#fff;margin-bottom:.7rem}
.rse-band p{color:#B7DBD4;margin-bottom:1.3rem}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(150deg,var(--navy-950),var(--navy-700));border-radius:var(--radius-lg);padding:clamp(2.2rem,5vw,3.4rem);text-align:center;color:#C9D6E6}
.cta-band h2{color:#fff}
.cta-band p{max-width:62ch;margin:0 auto 1.8rem;color:#B9C9DD}
.cta-band .btn-row{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
.field{display:flex;flex-direction:column;gap:.4rem}
.field--full{grid-column:1/-1}
.field label{font-size:.88rem;font-weight:600;color:var(--navy-900)}
.field input,.field select,.field textarea{font-family:var(--font-body);font-size:.95rem;padding:.8rem .9rem;border:1.5px solid var(--grey-300);border-radius:var(--radius-sm);background:#fff;color:var(--grey-900)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue-600);box-shadow:0 0 0 3px rgba(11,95,206,.12)}
.field .hint{font-size:.78rem;color:var(--grey-500)}

/* ---------- Footer ---------- */
.footer{background:var(--navy-950);color:#93A7BF;padding:3.4rem 0 1.6rem;font-size:.92rem}
.footer a{color:#C9D6E6}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem;padding-bottom:2.2rem;border-bottom:1px solid rgba(255,255,255,.1)}
.footer h4{color:#fff;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:1rem}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:.5rem}
.footer .brand{color:#fff;margin-bottom:1rem}
.footer .brand small{color:#7C90A9}
.footer-bottom{display:flex;flex-wrap:wrap;gap:.6rem 1.6rem;justify-content:space-between;padding-top:1.4rem;font-size:.82rem;color:#7C90A9}
.legal-badges{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.legal-badges span{border:1px solid rgba(255,255,255,.16);border-radius:6px;padding:.28rem .6rem;font-size:.76rem;color:#B9C9DD}

/* ---------- Cookie banner ---------- */
.cookie{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;width:min(960px,calc(100% - 32px));background:#fff;border:1px solid var(--grey-300);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:1.1rem 1.3rem;display:flex;flex-wrap:wrap;gap:1rem;align-items:center;z-index:150}
.cookie p{margin:0;font-size:.88rem;color:var(--grey-700);flex:1 1 320px}
.cookie .btn-row{display:flex;gap:.6rem;flex-wrap:wrap}
.cookie[hidden]{display:none}

/* ---------- Sticky mobile CTA ---------- */
.sticky-cta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:140;background:rgba(8,24,47,.96);backdrop-filter:blur(10px);padding:.7rem 1rem;gap:.6rem;border-top:1px solid rgba(255,255,255,.12)}
.sticky-cta .btn{flex:1}

/* ---------- Reveal (progressive enhancement : visible sans JS) ---------- */
.reveal{opacity:1;transform:none}
html.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
html.js .reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- Responsive ---------- */
@media (max-width:1020px){
  .hero-inner{grid-template-columns:1fr;gap:2.4rem}
  .hero-visual{order:-1}
  .f-layout{grid-template-columns:1fr;gap:2rem}
  .aside-card{position:static}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .rse-band{grid-template-columns:1fr}
}
@media (max-width:760px){
  body{font-size:16px}
  .burger{display:block}
  .nav{position:fixed;inset:74px 0 auto;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:.5rem 1.2rem 1.2rem;border-bottom:1px solid var(--grey-100);box-shadow:var(--shadow-md);display:none}
  .nav.is-open{display:flex}
  .nav a{padding:.85rem 0;border-bottom:1px solid var(--grey-100)}
  .nav-cta{margin:.9rem 0 0}
  .grid--2,.grid--3,.grid--4,.steps,.form-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr;gap:1rem}
  .sticky-cta{display:flex}
  .footer-grid{grid-template-columns:1fr}
  body{padding-bottom:72px}
  .cookie{bottom:78px}
}
@media print{.header,.sticky-cta,.cookie,.cta-band{display:none}}