/* ======================================================
   ISALIS — Design system (fond blanc, images couleur, CTA noir)
   NOTE: typographie de corps recréée à partir de la capture fournie
   (police monospace type machine à écrire, proche de Courier Prime).
   Logo recréé en approximation (grotesque géométrique gras, proche de
   Poppins ExtraBold, en gris ardoise) en attendant le fichier source
   du logo pour une intégration pixel-perfect.
   ====================================================== */
:root{
  --white:#FFFFFF;
  --paper:#FAFAF9;
  --ink:#0A0A0A;
  --black:#000000;
  --gray-1:#5B5B58;
  --gray-2:#8C8C87;
  --gray-3:#C6C5C0;
  --line:rgba(10,10,10,0.10);
  --line-strong:rgba(10,10,10,0.16);
  --maxw:1320px;
  --sans:'Courier Prime', 'IBM Plex Mono', monospace;
  --logo-font:'Poppins', sans-serif;
  --logo-color:#5B6670;
  --radius:8px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--white);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
img{display:block;max-width:100%;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
h1,h2,h3,h4{font-family:var(--sans);font-weight:700;letter-spacing:0;line-height:1.15;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
section{padding:120px 0;position:relative;}
@media(max-width:768px){section{padding:72px 0;} .container{padding:0 22px;}}

.section-paper{background:var(--paper);}
.section-black{background:var(--black);color:var(--white);}
.hairline-top{border-top:1px solid var(--line);}
.section-black.hairline-top{border-top:1px solid rgba(255,255,255,0.12);}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;font-weight:600;letter-spacing:0.16em;text-transform:uppercase;
  margin-bottom:20px;color:var(--gray-1);
}
.section-black .eyebrow{color:rgba(255,255,255,0.6);}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--black);}
.section-black .eyebrow .dot{background:var(--white);}

.section-head{max-width:660px;margin-bottom:60px;}
.section-head.wide{max-width:1180px;}
.section-head h2{font-size:clamp(30px,4vw,46px);margin-bottom:18px;}
.section-head p{font-size:17.5px;color:var(--gray-1);max-width:540px;}
.section-black .section-head p{color:rgba(255,255,255,0.65);}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center .eyebrow{justify-content:center;}
.section-head.center p{margin-left:auto;margin-right:auto;}

/* Images: full colour, soft rounded frame */
.img-frame{border-radius:var(--radius);overflow:hidden;background:var(--paper);}
.img-frame img{width:100%;height:100%;object-fit:cover;}

/* Buttons — black = CTA */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 28px;font-weight:700;font-size:13.5px;text-transform:uppercase;letter-spacing:0.04em;
  border-radius:3px;transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--black);color:var(--white);border:1px solid var(--black);}
.btn-primary:hover{transform:translateY(-2px);background:#1a1a1a;}
.section-black .btn-primary{background:var(--white);color:var(--black);border-color:var(--white);}
.section-black .btn-primary:hover{background:#eee;}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--ink);}
.btn-ghost:hover{border-color:var(--black);}
.section-black .btn-ghost{color:var(--white);border-color:rgba(255,255,255,0.3);}
.section-black .btn-ghost:hover{border-color:var(--white);}
.btn-block{width:100%;}

/* Header */
header{position:fixed;top:0;left:0;right:0;z-index:200;padding:22px 0;transition:padding .3s ease,background .3s ease,border-color .3s ease,box-shadow .3s ease;background:rgba(255,255,255,0.9);backdrop-filter:blur(10px);border-bottom:1px solid transparent;}
header.scrolled{padding:14px 0;border-color:var(--line);box-shadow:0 1px 0 rgba(0,0,0,0.02);}
header .container{display:flex;align-items:center;justify-content:space-between;}
.logo{display:flex;align-items:center;}
.logo img{display:block;height:56px;width:auto;filter:brightness(0);}
nav.main-nav{display:flex;align-items:center;gap:38px;}
nav.main-nav a{font-size:14.5px;font-weight:500;color:var(--gray-1);transition:color .2s ease;position:relative;}
nav.main-nav a:hover,nav.main-nav a.active{color:var(--ink);}
nav.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-20px;height:2px;background:var(--black);}
.header-actions{display:flex;align-items:center;gap:14px;}
.header-actions .btn{padding:12px 22px;font-size:13.5px;}
/* Language switcher */
.lang-switch{display:flex;align-items:center;border:1px solid var(--line-strong);border-radius:4px;overflow:hidden;}
.lang-switch button{padding:8px 11px;font-size:11.5px;font-weight:700;letter-spacing:.04em;color:var(--gray-2);background:transparent;transition:background .2s ease,color .2s ease;}
.lang-switch button+button{border-left:1px solid var(--line-strong);}
.lang-switch button:hover{color:var(--ink);}
.lang-switch button.active{background:var(--black);color:var(--white);}
.lang-switch-mobile{margin-top:18px;}
@media(max-width:960px){.lang-switch:not(.lang-switch-mobile){display:none;}}

.burger{display:none;width:38px;height:38px;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:10px;}
.burger span{display:block;width:16px;height:1.5px;background:var(--ink);position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--ink);}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}
.mobile-nav{position:fixed;inset:0;background:var(--white);z-index:199;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:26px;transform:translateY(-100%);transition:transform .4s ease;}
.mobile-nav.open{transform:translateY(0);}
.mobile-nav a{font-size:26px;font-weight:600;color:var(--ink);}
.mobile-nav .btn{margin-top:14px;}
@media(max-width:960px){
  nav.main-nav{display:none;}
  .header-actions .btn-ghost{display:none;}
  .burger{display:flex;}
}

/* Hero (homepage) — split layout, texte + visuel couleur */
.hero{padding-top:170px;padding-bottom:90px;background:var(--white);}
.hero .hero-grid{display:grid;grid-template-columns:1.05fr 0.95fr;gap:64px;align-items:center;}
.hero h1{font-size:clamp(38px,5.4vw,64px);margin-bottom:22px;}
.hero .subtitle{font-size:18.5px;color:var(--gray-1);max-width:520px;margin-bottom:36px;}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px;}
.hero-meta{display:flex;gap:34px;flex-wrap:nowrap;}
@media(max-width:640px){.hero-meta{flex-wrap:wrap;gap:22px 34px;}}
.hero-meta div{font-size:12.5px;text-transform:uppercase;letter-spacing:.1em;color:var(--gray-2);}
.hero-meta strong{display:block;font-size:24px;font-weight:700;color:var(--ink);letter-spacing:-0.02em;text-transform:none;}
.hero-visual{position:relative;}
.hero-visual .img-frame{aspect-ratio:4/5;box-shadow:0 40px 80px rgba(10,10,10,0.12);}
.hero-visual .badge{
  position:absolute;bottom:-22px;left:-22px;background:var(--black);color:var(--white);
  padding:20px 24px;border-radius:4px;max-width:220px;font-size:13px;box-shadow:0 20px 40px rgba(0,0,0,0.25);
}
.hero-visual .badge strong{display:block;font-size:22px;margin-bottom:4px;}
@media(max-width:960px){
  .hero .hero-grid{grid-template-columns:1fr;}
  .hero-visual{order:-1;max-width:420px;margin:0 auto;}
}

/* Page hero (interior pages) */
.page-hero{padding-top:170px;padding-bottom:70px;background:var(--paper);}
.page-hero h1{font-size:clamp(34px,5vw,58px);max-width:760px;}
.page-hero p.lead{margin-top:20px;font-size:18px;color:var(--gray-1);max-width:560px;}
.page-hero .img-frame{margin-top:50px;aspect-ratio:21/8;}
@media(max-width:768px){.page-hero .img-frame{aspect-ratio:4/3;}}

/* Stats */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;}
.stat-item{border-top:2px solid var(--ink);padding-top:20px;}
.section-black .stat-item{border-top:2px solid var(--white);}
.stat-item .num{font-size:clamp(34px,4vw,50px);font-weight:700;letter-spacing:-0.02em;}
.stat-item p{margin-top:8px;font-size:14px;color:var(--gray-1);max-width:220px;}
.section-black .stat-item p{color:rgba(255,255,255,0.65);}
@media(max-width:768px){.stat-row{grid-template-columns:1fr;gap:26px;}}

/* Sector tiles (home preview) — colour images, rounded cards */
.tiles-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;}
.tile{position:relative;border-radius:6px;overflow:hidden;aspect-ratio:3/4;background:var(--paper);}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.tile:hover img{transform:scale(1.06);}
.tile .tile-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(0,0,0,0.72) 100%);}
.tile .tile-label{position:absolute;left:16px;bottom:16px;z-index:2;color:#fff;}
.tile .tile-label .k{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;opacity:.75;}
.tile .tile-label h3{font-size:18px;margin-top:5px;color:#fff;}
.tile.more{display:flex;align-items:center;justify-content:center;background:var(--ink);}
.tile.more span{font-size:15px;text-align:center;padding:0 16px;color:#fff;font-weight:600;}
@media(max-width:960px){.tiles-grid{grid-template-columns:repeat(3,1fr);}}
@media(max-width:600px){.tiles-grid{grid-template-columns:repeat(2,1fr);}}

/* Sector detail rows */
.sector-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
.sector-row .media .img-frame{aspect-ratio:4/3.2;}
.sector-row.reverse .media{order:2;}
.sector-row .content .tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;background:var(--paper);padding:8px 14px;border-radius:3px;margin-bottom:20px;}
.sector-row .content h3{font-size:clamp(26px,3vw,36px);margin-bottom:16px;}
.sector-row .content p{font-size:16px;color:var(--gray-1);margin-bottom:24px;max-width:460px;}
.sector-row .content ul{display:flex;flex-direction:column;gap:11px;margin-bottom:28px;}
.sector-row .content li{font-size:14.5px;color:var(--gray-1);display:flex;gap:10px;}
.sector-row .content li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--black);margin-top:8px;flex-shrink:0;}
@media(max-width:900px){
  .sector-row{grid-template-columns:1fr;gap:28px;}
  .sector-row.reverse .media{order:0;}
}

/* Example media showcase (generated content demo) */
.examples-grid{display:grid;grid-template-columns:0.82fr 1fr;gap:20px;align-items:stretch;}
.example-card{position:relative;border-radius:6px;overflow:hidden;background:var(--paper);}
.example-card video{width:100%;height:100%;object-fit:cover;display:block;}
.example-card .ex-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 55%,rgba(0,0,0,0.78) 100%);}
.example-card .ex-badge{position:absolute;top:16px;left:16px;background:rgba(255,255,255,0.94);color:var(--ink);font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:7px 13px;border-radius:3px;}
.example-card .ex-label{position:absolute;left:18px;bottom:18px;right:18px;color:#fff;}
.example-card .ex-label .k{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;opacity:.78;}
.example-card .ex-label h3{font-size:18px;margin-top:5px;color:#fff;}
@media(max-width:768px){.examples-grid{grid-template-columns:1fr;}}

/* Simple sector cards (no photo) */
.cards-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;}
.s-card{background:var(--white);border:1px solid var(--line);border-radius:6px;padding:32px 26px;min-height:210px;display:flex;flex-direction:column;justify-content:flex-start;transition:border-color .2s ease,transform .2s ease;}
.s-card:hover{border-color:var(--ink);transform:translateY(-4px);}
.s-card svg{width:26px;height:26px;stroke:var(--ink);fill:none;}
.s-card h4{font-size:17px;line-height:1.3;margin-top:20px;min-height:2.6em;}
.s-card p{font-size:13.5px;color:var(--gray-1);margin-top:8px;}
@media(max-width:960px){.cards-grid{grid-template-columns:repeat(3,1fr);}}
@media(max-width:600px){.cards-grid{grid-template-columns:repeat(2,1fr);}}

/* Feature list */
.feature-list{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.f-item{background:var(--white);padding:40px 32px;}
.f-item .f-num{font-size:13px;font-weight:700;color:var(--gray-2);}
.f-item svg{width:28px;height:28px;stroke:var(--ink);fill:none;margin-top:20px;margin-bottom:20px;}
.f-item h3{font-size:19px;margin-bottom:10px;}
.f-item p{font-size:14.5px;color:var(--gray-1);}
@media(max-width:900px){.feature-list{grid-template-columns:repeat(2,1fr);}}
@media(max-width:600px){.feature-list{grid-template-columns:1fr;}}

/* Workflow */
.workflow-list{display:flex;flex-direction:column;}
.wf-row{display:grid;grid-template-columns:70px 1fr 1.4fr;gap:26px;align-items:center;padding:34px 0;border-top:1px solid var(--line);}
.wf-row:last-child{border-bottom:1px solid var(--line);}
.wf-row .wf-idx{font-size:20px;font-weight:700;color:var(--gray-3);}
.wf-row h3{font-size:22px;}
.wf-row p{font-size:14.5px;color:var(--gray-1);}
@media(max-width:768px){.wf-row{grid-template-columns:1fr;gap:8px;padding:24px 0;}}

/* Quote */
.quote-block{max-width:860px;margin:0 auto;text-align:center;}
.quote-block p{font-size:clamp(22px,3vw,34px);font-weight:600;line-height:1.35;letter-spacing:-0.01em;}
.quote-block .who{margin-top:28px;font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray-2);}
.section-black .quote-block .who{color:rgba(255,255,255,0.55);}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.price-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:32px 24px;display:flex;flex-direction:column;}
.price-card.featured{background:var(--ink);color:var(--white);border-color:var(--ink);}
.price-card h3{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray-2);margin-bottom:16px;}
.price-card.featured h3{color:rgba(255,255,255,0.6);}
.price-card .amount{font-size:32px;font-weight:700;margin-bottom:22px;letter-spacing:-0.02em;}
.price-card .amount span:last-child{font-size:13px;font-weight:500;color:var(--gray-2);margin-left:2px;}
.price-card.featured .amount span:last-child{color:rgba(255,255,255,0.6);}
.price-card ul{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex-grow:1;}
.price-card li{font-size:13.5px;color:var(--gray-1);display:flex;gap:10px;line-height:1.4;}
.price-card.featured li{color:rgba(255,255,255,0.82);}
.price-card li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--black);margin-top:6px;flex-shrink:0;}
.price-card.featured li::before{background:var(--white);}
.pricing-note{font-size:12.5px;color:var(--gray-2);margin-top:14px;}
.pricing-note+.pricing-note{margin-top:6px;}
@media(max-width:1100px){.pricing-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.pricing-grid{grid-template-columns:1fr;}}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px 4px;text-align:left;font-size:17px;font-weight:600;}
.faq-q .plus{font-size:20px;font-weight:300;transition:transform .25s ease;flex-shrink:0;}
.faq-item.open .faq-q .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 4px 24px;font-size:15px;color:var(--gray-1);max-width:620px;}

/* Forms */
.form-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:60px;}
.field{margin-bottom:22px;}
.field label{display:block;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--gray-1);margin-bottom:9px;}
.field input,.field select,.field textarea{
  width:100%;padding:14px 16px;border:1px solid var(--line-strong);border-radius:3px;background:var(--white);color:var(--ink);
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--black);}
.field .error-msg{display:none;color:#B23A3A;font-size:12px;margin-top:7px;}
.field.invalid input,.field.invalid select{border-color:#B23A3A;}
.field.invalid .error-msg{display:block;}
.form-success{display:none;padding:20px 0;}
.form-success.show{display:block;}
.form-success h3{font-size:24px;margin-bottom:10px;}
.form-success p{color:var(--gray-1);}
@media(max-width:768px){.form-grid{grid-template-columns:1fr;gap:36px;}}

/* Footer */
footer{padding:80px 0 30px;background:var(--black);color:var(--white);}
.footer-top{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:46px;margin-bottom:60px;}
.footer-brand .logo img{filter:brightness(0) invert(1) opacity(0.82);}
.footer-brand p{opacity:.6;font-size:14px;margin-top:16px;max-width:280px;}
.footer-col h5{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;opacity:.5;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14.5px;opacity:.75;transition:opacity .2s ease;}
.footer-col a:hover{opacity:1;}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:24px;border-top:1px solid rgba(255,255,255,0.12);font-size:12.5px;opacity:.5;}
@media(max-width:900px){.footer-top{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.footer-top{grid-template-columns:1fr;}}

/* CTA band */
.cta-band{text-align:center;}
.cta-band h2{font-size:clamp(28px,4.2vw,50px);margin-bottom:24px;}
.cta-band p{color:var(--gray-1);max-width:520px;margin:0 auto 36px;font-size:17px;}
.section-black .cta-band p{color:rgba(255,255,255,0.7);}

/* Reveal */
.reveal{opacity:0;transform:translateY(36px);}

.skip-link{position:absolute;left:-999px;top:0;background:var(--black);color:var(--white);padding:10px 16px;z-index:300;border-radius:8px;}
.skip-link:focus{left:16px;top:16px;}

/* Legal pages (mentions légales, confidentialité) */
.legal-updated{margin-top:18px;font-size:13px;color:var(--gray-2);}
.legal-content{max-width:760px;}
.legal-content h2{font-size:clamp(21px,2.4vw,26px);margin-top:52px;margin-bottom:16px;}
.legal-content h2:first-child{margin-top:0;}
.legal-content p{font-size:15.5px;line-height:1.7;color:var(--gray-1);margin-bottom:14px;}
.legal-content p a{text-decoration:underline;color:var(--ink);}
.legal-content ul{display:flex;flex-direction:column;gap:9px;margin:6px 0 20px;}
.legal-content li{font-size:15px;line-height:1.5;color:var(--gray-1);display:flex;gap:10px;}
.legal-content li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--black);margin-top:8px;flex-shrink:0;}
.identity-list{margin:20px 0 32px;border-top:1px solid var(--line);}
.identity-list>div{display:grid;grid-template-columns:230px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);}
.identity-list dt{font-size:12.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--gray-2);}
.identity-list dd{font-size:15px;color:var(--ink);}
@media(max-width:640px){.identity-list>div{grid-template-columns:1fr;gap:4px;}}

/* CTA "Tester Isalis" — secondary nav link + inline text links + button/link pairs */
.nav-link-secondary{font-size:13.5px;font-weight:500;color:var(--gray-1);transition:color .2s ease;}
.nav-link-secondary:hover{color:var(--ink);}
@media(max-width:960px){.nav-link-secondary{display:none;}}
.mobile-nav .nav-link-secondary-mobile{font-size:15px;font-weight:500;color:rgba(10,10,10,0.55);text-decoration:underline;margin-top:-10px;}
.link-underline{font-size:14px;font-weight:600;color:var(--gray-1);text-decoration:underline;text-underline-offset:3px;transition:color .2s ease;}
.link-underline:hover{color:var(--ink);}
.section-black .link-underline{color:rgba(255,255,255,0.7);}
.section-black .link-underline:hover{color:#fff;}
.cta-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}
footer .btn-primary{background:var(--white);color:var(--black);border-color:var(--white);}
footer .btn-primary:hover{background:#eee;}
footer .link-underline{color:rgba(255,255,255,0.6);}
footer .link-underline:hover{color:#fff;}