/* =====================================================
   NOVAFLOW AI — DESIGN FINAL NOIR & OR
   Mise en page cohérente, responsive et accessible
===================================================== */

:root{
  --bg:#050505;
  --bg-alt:#090909;
  --panel:#101010;
  --panel-2:#151515;
  --gold:#d4af37;
  --gold-light:#f2d77f;
  --gold-pale:#fff0b2;
  --gold-dark:#896814;
  --text:#f8f6ef;
  --muted:#aaa79f;
  --line:rgba(212,175,55,.20);
  --line-soft:rgba(255,255,255,.07);
  --shadow:0 26px 80px rgba(0,0,0,.52);
  --shadow-soft:0 16px 48px rgba(0,0,0,.30);
  --radius-xl:30px;
  --radius-lg:22px;
  --radius-md:15px;
  --container:1200px;
  --header-h:86px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{
  min-height:100vh;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  background:
    radial-gradient(circle at 12% 0%,rgba(212,175,55,.10),transparent 27rem),
    radial-gradient(circle at 88% 18%,rgba(212,175,55,.055),transparent 24rem),
    linear-gradient(180deg,#050505 0%,#080808 48%,#050505 100%);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
main{display:block}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}
.section{padding:104px 0}
.dark-section{
  background:linear-gradient(180deg,rgba(255,255,255,.012),rgba(212,175,55,.04),rgba(255,255,255,.012));
  border-block:1px solid rgba(255,255,255,.045);
}

/* TYPOGRAPHIE */
h1,h2,h3{line-height:1.15;text-wrap:balance}
p{max-width:72ch}
.section-title{max-width:790px;margin:0 auto 54px;text-align:center}
.section-title h1{font-size:clamp(2.55rem,5.6vw,5.1rem);letter-spacing:-.052em}
.section-title h2{font-size:clamp(2rem,4vw,3.35rem);letter-spacing:-.038em}
.section-title p{margin:18px auto 0;color:var(--muted);font-size:1.08rem}
.badge{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  margin-bottom:23px;padding:9px 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(212,175,55,.08);
  color:var(--gold-light);font-size:.78rem;font-weight:800;
  letter-spacing:.09em;text-transform:uppercase;
}
.gold-text,.hero-content h1 span{
  background:linear-gradient(110deg,var(--gold-dark),var(--gold-light) 45%,var(--gold-pale) 62%,var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* EN-TÊTE */
.header{
  position:fixed;inset:0 0 auto;z-index:1000;
  background:rgba(5,5,5,.72);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.055);transition:.28s ease;
}
.header.scrolled{background:rgba(5,5,5,.96);box-shadow:0 16px 46px rgba(0,0,0,.42)}
.nav-container{min-height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.logo-symbol{
  width:49px;height:49px;border-radius:15px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--gold-dark),var(--gold-light) 62%,var(--gold-pale));
  color:#050505;font-size:1.65rem;font-weight:950;
  box-shadow:0 0 34px rgba(212,175,55,.24),inset 0 1px 0 rgba(255,255,255,.45);
}
.logo-text{font-size:1.31rem;font-weight:900;line-height:.95;letter-spacing:-.02em}
.logo-text>span{color:var(--gold)}
.logo-text small{display:block;margin-top:7px;color:#8d8a83;font-size:.54rem;letter-spacing:.23em;font-weight:700}
nav ul{display:flex;align-items:center;gap:22px;list-style:none}
nav a{position:relative;color:#ddd9d0;font-size:.91rem;font-weight:700;white-space:nowrap;transition:.22s}
nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-10px;height:2px;background:linear-gradient(90deg,var(--gold-dark),var(--gold-light));transition:.22s}
nav a:hover,nav a.active{color:var(--gold-light)}
nav a:hover::after,nav a.active::after{right:0}
.menu-btn{display:none;border:1px solid var(--line);background:#0d0d0d;color:#fff;width:46px;height:46px;border-radius:13px;font-size:1.45rem;line-height:1;z-index:1002}

/* HÉROS */
.hero{position:relative;overflow:hidden;padding:158px 0 86px;text-align:center}
.hero::before{content:"";position:absolute;width:720px;height:720px;border-radius:50%;top:-490px;left:50%;transform:translateX(-50%);background:radial-gradient(circle,rgba(212,175,55,.20),transparent 67%);pointer-events:none}
.home-hero{min-height:780px;padding:155px 0 90px;display:grid;align-items:center;text-align:left}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(370px,.92fr);gap:72px;align-items:center}
.hero-content h1{font-size:clamp(3.2rem,6.5vw,6.15rem);line-height:.98;letter-spacing:-.062em;max-width:810px}
.hero-content p{margin-top:27px;color:#b9b5ac;font-size:1.16rem;max-width:670px}
.hero-buttons{display:flex;flex-wrap:wrap;gap:13px;margin-top:33px}
.btn-primary,.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;min-height:53px;padding:0 27px;border-radius:999px;
  font-weight:850;border:1px solid transparent;transition:transform .23s,box-shadow .23s,border-color .23s,color .23s;
}
.btn-primary{background:linear-gradient(135deg,var(--gold-dark),var(--gold-light));color:#050505;box-shadow:0 14px 36px rgba(212,175,55,.20)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 48px rgba(212,175,55,.32)}
.btn-secondary{border-color:var(--line);background:rgba(255,255,255,.035);color:#fff}
.btn-secondary:hover{transform:translateY(-3px);border-color:var(--gold);color:var(--gold-light)}

/* FENÊTRE IA */
.hero-card{min-width:0}
.ai-window{
  position:relative;padding:25px;border:1px solid var(--line);border-radius:var(--radius-xl);
  background:linear-gradient(145deg,rgba(255,255,255,.078),rgba(255,255,255,.022));
  box-shadow:var(--shadow);backdrop-filter:blur(15px);
}
.ai-window::before{content:"";position:absolute;inset:-1px;border-radius:inherit;background:linear-gradient(135deg,rgba(255,240,178,.30),transparent 35%,rgba(212,175,55,.10));z-index:-1}
.ai-header,.chat-header{padding:13px 16px;border-radius:14px;background:#090909;border:1px solid var(--line-soft);font-weight:850;color:var(--gold-light);margin-bottom:17px}
.ai-message,.message{max-width:84%;padding:14px 17px;border-radius:17px;margin:12px 0;background:#1a1a1a;border:1px solid rgba(255,255,255,.05);color:#e8e4da}
.ai-message.user,.message.user{margin-left:auto;background:linear-gradient(135deg,var(--gold-dark),var(--gold));color:#050505;font-weight:720}
.message.bot{margin-right:auto}

/* GRILLES */
.features-grid,.cards-grid,.cases-grid,.case-study-grid,.pricing-grid,.stats-grid,.tech-grid,.steps{display:grid;gap:24px}
.features-grid,.cards-grid,.cases-grid,.case-study-grid,.pricing-grid,.steps{grid-template-columns:repeat(3,minmax(0,1fr))}
.stats-grid,.tech-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.feature-card,.card,.case-card,.case-study-card,.price-card,.stat,.tech-card,.contact-form,.contact-info,.privacy-content,.thank-you,.lead-box{
  border:1px solid var(--line);background:linear-gradient(145deg,rgba(255,255,255,.056),rgba(255,255,255,.016));
  border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);
}
.feature-card,.card,.case-card,.case-study-card,.price-card{padding:32px;min-width:0;transition:.27s ease}
.feature-card,.card,.case-card,.case-study-card{height:100%}
.feature-card:hover,.card:hover,.case-card:hover,.case-study-card:hover,.price-card:hover{transform:translateY(-7px);border-color:rgba(242,215,127,.48);box-shadow:0 26px 64px rgba(0,0,0,.43)}
.feature-icon,.case-icon{width:58px;height:58px;display:grid;place-items:center;margin-bottom:19px;border-radius:17px;background:rgba(212,175,55,.09);border:1px solid var(--line);font-size:2rem}
.feature-card h3,.case-card h3,.card h3{font-size:1.34rem;margin-bottom:10px}
.feature-card p,.case-card p,.card p,.case-study-card p{color:var(--muted)}
.case-study-card h2{font-size:1.65rem;margin-bottom:19px}.case-study-card h3{color:var(--gold-light);font-size:1rem;margin:22px 0 7px}.case-study-card .result,.result{margin-top:23px;padding:15px;border-radius:14px;background:rgba(212,175,55,.08);color:var(--gold-light)}
.steps .step{height:100%;padding:32px;text-align:center;border:1px solid var(--line-soft);border-radius:var(--radius-lg);background:rgba(255,255,255,.018)}
.step-number{width:64px;height:64px;margin:0 auto 19px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--gold-dark),var(--gold-light));color:#050505;font-weight:950}
.step h3{font-size:1.35rem}.step p{margin-top:9px;color:var(--muted)}
.stat,.tech-card{padding:30px;text-align:center}.stat h2{font-size:2.55rem;color:var(--gold-light)}.stat p,.tech-card{color:var(--muted)}

/* TARIFS */
.pricing-grid{align-items:stretch}.price-card{text-align:center;display:flex;flex-direction:column}.price-card.featured{border-color:rgba(242,215,127,.72);box-shadow:0 28px 82px rgba(212,175,55,.13)}
.price-card h2{font-size:1.65rem}.price{margin:24px 0 6px;color:var(--gold-light);font-size:clamp(2.45rem,4.7vw,3.9rem);font-weight:950;line-height:1.02}.price-card>span{color:var(--muted)}
.price-card ul{list-style:none;text-align:left;margin:28px 0 30px;flex:1}.price-card li{padding:10px 0;color:#cfcbc2;border-bottom:1px solid rgba(255,255,255,.045)}
.price-card .btn-primary,.price-card .btn-secondary{width:100%}

/* CTA */
.cta{padding:91px 0;text-align:center;border-block:1px solid var(--line);background:linear-gradient(125deg,rgba(212,175,55,.12),rgba(255,255,255,.015),rgba(212,175,55,.07))}
.cta h2{font-size:clamp(2rem,4vw,3.35rem);letter-spacing:-.035em}.cta p{margin:17px auto 28px;color:var(--muted);font-size:1.07rem;max-width:700px}

/* FORMULAIRE */
.contact-grid{display:grid;grid-template-columns:minmax(270px,.78fr) minmax(0,1.22fr);gap:28px;align-items:start}
.contact-info,.contact-form{padding:38px}.contact-info{position:sticky;top:115px}.contact-info h2{font-size:2rem;margin-bottom:14px}.contact-info p{margin:13px 0;color:var(--muted)}.contact-info .btn-primary{margin-top:17px}
.contact-form form{display:grid;gap:15px}.contact-form input,.contact-form textarea,.contact-form select,.lead-box input,.lead-box textarea{width:100%;border:1px solid rgba(255,255,255,.10);background:#0b0b0b;color:#fff;padding:16px 17px;border-radius:14px;outline:none;transition:.2s}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus,.lead-box input:focus,.lead-box textarea:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(212,175,55,.09)}
.contact-form textarea,.lead-box textarea{min-height:155px;resize:vertical}.contact-form option{background:#111}.contact-form .btn-primary{border:0;width:100%}

/* DÉMO */
.chat-container,.ai-demo{width:min(100%,900px);margin:auto;padding:24px;border:1px solid var(--line);border-radius:var(--radius-xl);background:rgba(255,255,255,.035);box-shadow:var(--shadow)}
.chat-box{height:430px;overflow-y:auto;padding:20px;margin-bottom:16px;border-radius:18px;background:#070707;border:1px solid var(--line-soft)}
.chat-input{display:flex;gap:12px}.chat-input input{flex:1;min-width:0;min-height:52px;padding:0 20px;border:1px solid rgba(255,255,255,.10);border-radius:999px;background:#0d0d0d;color:#fff;outline:none}.chat-input input:focus{border-color:var(--gold)}
.chat-input button{min-height:52px;padding:0 25px;border:0;border-radius:999px;background:linear-gradient(135deg,var(--gold-dark),var(--gold-light));color:#050505;font-weight:900}
.quick-actions,.business-buttons{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:16px}.quick-btn,.business-btn{padding:10px 16px;border:1px solid var(--line);border-radius:999px;background:#101010;color:#ddd}.quick-btn:hover,.business-btn:hover,.business-btn.active{border-color:var(--gold);background:rgba(212,175,55,.08);color:var(--gold-light)}
.business-selector{text-align:center;margin-bottom:35px}.lead-box{margin-top:35px;padding:35px;text-align:center}.lead-box form{max-width:650px;margin:25px auto 0;display:grid;gap:14px}

/* PAGES LÉGALES / MERCI */
.privacy-content{max-width:920px;padding:43px}.privacy-content h2{margin:34px 0 10px;color:var(--gold-light)}.privacy-content h2:first-child{margin-top:0}.privacy-content p,.privacy-content li{color:#bbb7ae}.privacy-content ul{padding-left:23px;margin-top:10px}
.thank-you{max-width:760px;margin:auto;padding:55px;text-align:center}.thank-you .icon{font-size:4rem}.thank-you p{margin:14px auto 8px;color:var(--muted)}

/* PIED DE PAGE */
.footer{padding:68px 0 23px;background:#030303;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr;gap:46px}.footer h3{margin-bottom:13px;color:var(--gold-light)}.footer p,.footer a{color:#9d9990}.footer a:hover{color:var(--gold-light)}
.footer-bottom{margin-top:41px;padding-top:21px;border-top:1px solid rgba(255,255,255,.055);text-align:center}

/* BOUTONS FLOTTANTS */
.whatsapp{position:fixed;right:21px;bottom:21px;width:59px;height:59px;display:grid;place-items:center;border-radius:50%;background:#25d366;font-size:1.65rem;z-index:900;box-shadow:0 14px 38px rgba(37,211,102,.30);transition:.24s}.whatsapp:hover{transform:translateY(-4px) scale(1.04)}
.back-to-top{position:fixed;right:28px;bottom:91px;width:43px;height:43px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;background:#111;color:var(--gold-light);opacity:0;pointer-events:none;transform:translateY(9px);transition:.24s;z-index:899}.back-to-top.visible{opacity:1;pointer-events:auto;transform:none}

/* ANIMATIONS */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .65s ease,transform .65s ease}.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}*{animation:none!important;transition-duration:.01ms!important}}

/* TABLETTES ET PETITS ORDINATEURS */
@media(max-width:1120px){
  nav ul{gap:15px}nav a{font-size:.82rem}
  .hero-grid{grid-template-columns:1fr;gap:52px}.home-hero{text-align:center}.hero-content p{margin-inline:auto}.hero-buttons{justify-content:center}.hero-card{width:min(100%,720px);margin:auto}
  .features-grid,.cards-grid,.cases-grid,.case-study-grid,.steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pricing-grid{grid-template-columns:1fr;max-width:720px;margin:auto}
  .stats-grid,.tech-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* MENU MOBILE PLUS TÔT POUR ÉVITER LE MENU CROCHE */
@media(max-width:980px){
  .menu-btn{display:grid;place-items:center}.nav-container{position:relative}
  nav ul{display:none;position:absolute;top:72px;right:0;width:min(350px,calc(100vw - 40px));padding:18px;flex-direction:column;align-items:stretch;gap:0;background:#090909;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
  nav ul.active{display:flex}nav li+li{border-top:1px solid rgba(255,255,255,.055)}nav a{display:block;padding:13px 6px;font-size:1rem}nav a::after{display:none}
  .contact-grid{grid-template-columns:1fr}.contact-info{position:static}.footer-grid{grid-template-columns:1fr 1fr}
}

/* MOBILE */
@media(max-width:700px){
  :root{--header-h:76px}.container{width:min(calc(100% - 28px),var(--container))}.section{padding:75px 0}.hero{padding:126px 0 68px}.home-hero{min-height:auto;padding:126px 0 76px}
  .logo-symbol{width:44px;height:44px;font-size:1.45rem}.logo-text{font-size:1.13rem}.logo-text small{font-size:.48rem}
  .hero-content h1{font-size:clamp(2.45rem,12vw,4.2rem)}.hero-content p{font-size:1rem}.hero-buttons{flex-direction:column}.btn-primary,.btn-secondary{width:100%}
  .features-grid,.cards-grid,.cases-grid,.case-study-grid,.steps,.stats-grid,.tech-grid{grid-template-columns:1fr}
  .feature-card,.card,.case-card,.case-study-card,.price-card{padding:25px}.section-title{margin-bottom:39px}.section-title p{font-size:1rem}
  .contact-info,.contact-form,.privacy-content,.thank-you{padding:27px}.chat-container,.ai-demo{padding:15px}.chat-box{height:360px;padding:14px}.chat-input{flex-direction:column}.chat-input input,.chat-input button{width:100%}
  .footer-grid{grid-template-columns:1fr;text-align:center;gap:30px}.footer .logo{justify-content:center}.footer-bottom{margin-top:30px}
  .whatsapp{right:14px;bottom:14px;width:54px;height:54px}.back-to-top{right:19px;bottom:78px}
}

@media(max-width:390px){.logo-text small{display:none}.menu-btn{width:43px;height:43px}.badge{font-size:.69rem}.hero-content h1{font-size:2.35rem}}

::selection{background:var(--gold);color:#050505}
::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:#050505}::-webkit-scrollbar-thumb{background:linear-gradient(var(--gold-dark),var(--gold-light));border-radius:999px}


/* =====================================================
   NOVAFLOW V4 — FINITIONS VISUELLES PREMIUM
===================================================== */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;opacity:.16;
  background-image:linear-gradient(rgba(212,175,55,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(212,175,55,.045) 1px,transparent 1px);
  background-size:72px 72px;mask-image:linear-gradient(to bottom,black,transparent 72%);
}
.home-hero::after{
  content:"";position:absolute;right:-110px;top:120px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(212,175,55,.12);box-shadow:0 0 0 55px rgba(212,175,55,.025),0 0 0 110px rgba(212,175,55,.018);pointer-events:none;
}
.hero-content{position:relative;z-index:2}
.hero-content .badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--gold-light);box-shadow:0 0 14px var(--gold)}
.ai-window{overflow:hidden}
.ai-window::after{content:"";position:absolute;width:170px;height:170px;right:-70px;bottom:-70px;border-radius:50%;background:radial-gradient(circle,rgba(242,215,127,.18),transparent 68%)}
.trust-strip{border-block:1px solid var(--line-soft);background:rgba(255,255,255,.018)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-grid>div{padding:25px 28px;text-align:center;border-right:1px solid var(--line-soft)}
.trust-grid>div:last-child{border-right:0}
.trust-grid strong{display:block;color:var(--gold-light);font-size:1.18rem}
.trust-grid span{display:block;margin-top:3px;color:var(--muted);font-size:.83rem}
.proof-section{position:relative}
.proof-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.proof-copy h2{font-size:clamp(2.2rem,4vw,3.8rem);letter-spacing:-.045em;max-width:720px}
.proof-copy>p{margin-top:20px;color:var(--muted);font-size:1.08rem}
.check-list{list-style:none;margin-top:28px;display:grid;gap:13px}
.check-list li{position:relative;padding-left:31px;color:#ddd8cd;font-weight:650}
.check-list li::before{content:"✓";position:absolute;left:0;color:var(--gold-light);font-weight:950}
.proof-panel{padding:16px;border:1px solid var(--line);border-radius:var(--radius-xl);background:linear-gradient(145deg,rgba(255,255,255,.055),rgba(255,255,255,.012));box-shadow:var(--shadow)}
.proof-line{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 18px;border-bottom:1px solid var(--line-soft)}
.proof-line:last-child{border-bottom:0}
.proof-line span{color:var(--muted)}
.proof-line strong{color:var(--gold-light)}
.feature-card,.case-card,.case-study-card,.price-card{position:relative;overflow:hidden}
.feature-card::after,.case-card::after,.case-study-card::after,.price-card::after{content:"";position:absolute;inset:auto -35% -65% auto;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(212,175,55,.09),transparent 69%);pointer-events:none}
.btn-primary,.btn-secondary{letter-spacing:.01em}
.footer{position:relative;overflow:hidden}
.footer::before{content:"";position:absolute;left:50%;top:-240px;transform:translateX(-50%);width:620px;height:320px;background:radial-gradient(circle,rgba(212,175,55,.09),transparent 70%);pointer-events:none}
@media(max-width:900px){
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid>div:nth-child(2){border-right:0}.trust-grid>div:nth-child(-n+2){border-bottom:1px solid var(--line-soft)}
  .proof-grid{grid-template-columns:1fr;gap:34px}
  .home-hero::after{display:none}
}
@media(max-width:520px){
  .trust-grid{grid-template-columns:1fr}.trust-grid>div{border-right:0;border-bottom:1px solid var(--line-soft)!important}.trust-grid>div:last-child{border-bottom:0!important}
  .proof-panel{padding:8px}.proof-line{padding:17px 13px}
}