/* ===========================================================================
 * NeydFlow — feuille de style du site public (accueil FR et EN).
 *
 * Direction : maquette validee NEY-554 (artifacts « NeydFlow » FR et EN),
 * tokens : brand kit v1.2 du site (teal), polices Manrope + JetBrains Mono.
 * Une seule feuille partagee par /index.html (EN) et /fr/index.html (FR).
 * =========================================================================== */

:root{
  /* Brand kit v1.2 */
  --teal-bright:#2DD4BF;
  --teal-primary:#14B8A6;
  --teal-deep:#0D9488;
  --mint:#D6F5EE;
  --surface:#0E1A1D;
  --slate-500:#64748B;
  --slate-400:#94A3B8;
  --slate-200:#e2e8f0;
  --warn:#F2B705;              /* badge « en developpement » */

  --bg:var(--surface);
  --bg-2:#13242a;
  --panel:#162b32;
  --line:#1f3a40;
  --fg:var(--slate-200);
  --muted:var(--slate-400);
  --accent:var(--teal-bright);

  --d-sans:'Manrope','Inter',system-ui,sans-serif;
  --d-mono:'JetBrains Mono',ui-monospace,monospace;
  color-scheme:dark;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}

/* Pied de page colle en bas, meme sur page courte (regle pilote 27/10). */
body{
  background:var(--bg);color:var(--fg);font-family:var(--d-sans);line-height:1.55;
  min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
main{flex:1 0 auto}

h1,h2,h3{font-family:var(--d-sans);line-height:1.08;text-wrap:balance}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--teal-bright);outline-offset:3px;border-radius:6px}

.skip{position:absolute;left:-9999px;top:0;background:var(--teal-primary);color:#04221e;padding:.6em 1em;z-index:60}
.skip:focus{left:8px;top:8px}

.wrap{max-width:1060px;margin-inline:auto;padding:0 24px}
.mono{font-family:var(--d-mono)}
.eyebrow{font-family:var(--d-mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);display:block}

.btn{
  display:inline-flex;align-items:center;gap:.5em;font-family:inherit;font-weight:700;font-size:.95rem;
  padding:.8em 1.4em;border-radius:10px;border:1px solid transparent;transition:transform .15s,background .2s,border-color .2s;
}
.btn:hover{transform:translateY(-1px)}
.btn-p{background:var(--teal-primary);color:#04221e;box-shadow:0 4px 20px -6px rgba(45,212,191,.5)}
.btn-p:hover{background:var(--teal-bright)}
.btn-g{border-color:var(--line);color:var(--fg)}
.btn-g:hover{border-color:var(--teal-deep);color:var(--teal-bright)}

/* ---------- NAV ---------- */
header.nav{position:sticky;top:0;z-index:50;background:rgba(14,26,29,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:1.4rem;padding-block:.8rem}
.logo-img{display:block;height:30px;width:auto}
.nav nav{display:flex;gap:1.05rem;margin-left:auto;flex-wrap:wrap}
.nav nav a{color:var(--muted);font-size:.9rem}
.nav nav a:hover{color:var(--fg)}
.nav .btn{padding:.55em 1em;font-size:.86rem}
.lang{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.lang a{font-family:var(--d-mono);font-size:.72rem;font-weight:600;letter-spacing:.06em;padding:.45em .7em;color:var(--muted)}
.lang a[aria-current="true"]{background:var(--teal-deep);color:#fff}
.sign-in{font-size:.86rem;color:var(--muted)}
.sign-in:hover{color:var(--fg)}
@media(max-width:900px){.nav nav{display:none}}
@media(max-width:560px){.sign-in{display:none}}

/* ---------- SECTIONS ---------- */
section{padding-block:clamp(2.8rem,6.5vw,5rem)}
h2.sec{font-size:clamp(1.5rem,3.6vw,2.1rem);font-weight:800;margin-bottom:.45rem}
.sec-lead{color:var(--muted);max-width:62ch;margin-bottom:1.9rem}
.band{background:var(--bg-2);border-block:1px solid var(--line)}

.hero{background:radial-gradient(900px 460px at 75% -10%,rgba(20,184,166,.20),transparent 60%),var(--bg);padding-top:clamp(2.5rem,5vw,4rem)}
.hero h1{font-size:clamp(2.1rem,5.4vw,3.5rem);font-weight:900;letter-spacing:-.015em;color:#fff;margin-top:1rem}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .lead{font-size:1.15rem;max-width:52ch;margin:1.2rem 0 1.7rem}
.cta-row{display:flex;gap:.8rem;flex-wrap:wrap;align-items:center}
.reassure{color:var(--muted);font-size:.85rem;margin-top:1rem}
.reassure b{color:var(--fg);font-weight:600}
.domains{margin-top:1.4rem;color:var(--muted);font-size:.88rem}
.domains b{color:var(--fg);font-weight:600}

.trust{border-block:1px solid var(--line);background:var(--bg-2)}
.trust .wrap{display:flex;flex-wrap:wrap;gap:1rem 2rem;padding-block:1rem;font-family:var(--d-mono);font-size:.8rem;color:var(--muted)}
.trust span{display:inline-flex;gap:.5em;align-items:center}
.trust b{color:var(--accent)}

.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:1.2rem;min-width:0}
.card h3{font-size:1.05rem;font-weight:700;margin-bottom:.35rem}
.card p{color:var(--muted);font-size:.9rem}
.card .k{font-family:var(--d-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.diff{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin-top:1.4rem}
.diff .card{border-top:3px solid var(--teal-primary)}
.diff h3{font-size:1.1rem}

.pains{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:1.3rem}
.pain{border-left:2px solid var(--line);padding-left:1rem}
.pain h3{font-size:1rem;font-weight:700}
.pain p{color:var(--muted);font-size:.9rem;margin-top:.3rem}

.chips{display:flex;gap:.5rem;flex-wrap:wrap;margin:.4rem 0 0}
.chip{font-family:var(--d-mono);font-size:.78rem;color:var(--mint);border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:.32em .75em}
.chip.new{color:#04221e;background:var(--teal-bright);border-color:var(--teal-bright)}

.steps{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-top:1.2rem}
.step{display:flex;gap:.8rem;align-items:flex-start}
.step .n{font-family:var(--d-mono);color:var(--accent);font-size:.8rem;border:1px solid var(--line);border-radius:6px;padding:.15em .5em}
.step h3{font-size:.98rem;font-weight:700}
.step p{color:var(--muted);font-size:.88rem;margin-top:.25rem}
.roles{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:1.3rem}
.role{font-family:var(--d-mono);font-size:.8rem;border:1px solid var(--line);border-radius:7px;padding:.45em .8em;color:var(--muted)}
.role b{color:var(--fg)}

.split{display:grid;gap:2rem;grid-template-columns:1.05fr .95fr;align-items:center}
@media(max-width:800px){.split{grid-template-columns:1fr}}
.feature-list{list-style:none;display:grid;gap:.6rem;margin-top:1rem}
.feature-list li{padding-left:1.4rem;position:relative;color:var(--muted)}
.feature-list li::before{content:"\25B8";position:absolute;left:0;color:var(--accent)}
.panel-xl{background:linear-gradient(160deg,var(--panel),var(--bg-2));border:1px solid var(--line);border-radius:14px;padding:1.3rem;overflow-x:auto}
.panel-xl .mono{display:block;color:var(--muted);font-size:.82rem;white-space:pre-wrap;line-height:1.5}
.panel-xl .hl{color:var(--mint)}
.panel-xl .cm{color:var(--slate-500)}

.plans{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.plan{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:1.4rem;display:flex;flex-direction:column;gap:.4rem;position:relative}
.plan.feat{border-color:var(--teal-primary)}
.plan .badge{position:absolute;top:-.7rem;left:1.2rem;background:var(--teal-bright);color:#04221e;font-family:var(--d-mono);font-size:.64rem;letter-spacing:.08em;padding:.2em .6em;border-radius:5px}
.plan h3{font-size:1.1rem;font-weight:700}
.plan .price{font-weight:800;font-size:1.6rem}
.plan .price small{font-weight:500;font-size:.78rem;color:var(--muted)}
.plan ul{list-style:none;display:grid;gap:.35rem;margin:.3rem 0 1rem;color:var(--muted);font-size:.88rem}
.plan .btn{margin-top:auto;justify-content:center}
.dev{font-family:var(--d-mono);font-size:.66rem;color:var(--warn);border:1px solid var(--warn);border-radius:5px;padding:.1em .5em;margin-left:.3em;vertical-align:middle;white-space:nowrap}

.demo{background:linear-gradient(135deg,rgba(20,184,166,.10),rgba(45,212,191,.05)),var(--bg-2);border-block:1px solid var(--line)}
.demo h2{font-size:clamp(1.5rem,3.6vw,2.1rem);font-weight:800}
.demo ul{list-style:none;display:grid;gap:.5rem;margin-top:1rem;color:var(--muted)}
.demo ul li{padding-left:1.4rem;position:relative}
.demo ul li::before{content:"\2713";position:absolute;left:0;color:var(--accent);font-weight:700}
.demo .act{display:flex;flex-direction:column;gap:.7rem;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:1.4rem}
.demo .act .btn{justify-content:center}
.demo .act small{color:var(--muted);font-size:.8rem}
.demo .act strong{font-weight:800}

.faq{display:grid;gap:.6rem;margin-top:1.3rem}
details{background:var(--panel);border:1px solid var(--line);border-radius:10px}
summary{cursor:pointer;font-weight:700;font-size:1rem;padding:.9rem;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";float:right;color:var(--accent);font-family:var(--d-mono)}
details[open] summary::after{content:"\2013"}
details p{color:var(--muted);font-size:.92rem;padding:0 .9rem 1rem}

.final{text-align:center;background:radial-gradient(800px 360px at 50% 120%,rgba(20,184,166,.16),transparent 60%)}
.final h2{font-size:clamp(1.6rem,4.2vw,2.4rem);font-weight:900;margin-bottom:.6rem}
.final p{color:var(--muted);margin:0 auto 1.3rem;max-width:48ch}
.final .cta-row{justify-content:center}

footer{border-top:1px solid var(--line);color:var(--muted);font-size:.86rem;flex-shrink:0}
footer .wrap{padding-block:2.2rem;display:grid;gap:1.6rem;grid-template-columns:1.6fr 1fr 1fr 1.2fr}
@media(max-width:700px){footer .wrap{grid-template-columns:1fr 1fr}}
footer strong{color:var(--fg);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}
footer a{color:var(--muted);display:block;margin-top:.5rem}
footer a:hover{color:var(--fg)}
footer p{margin-top:.6rem;max-width:34ch}
.legalnote .wrap{padding-block:1rem;border-top:1px solid var(--line);font-size:.74rem;display:block}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn{transition:none}
  .btn:hover{transform:none}
}