/* =========================================================
   Niit@n — Feuille de style
   Repères visuels : blanc / gris #f5f5f7, texte #1d1d1f,
   bleu #0071e3, typographie système SF Pro.
   ========================================================= */

:root{
  --bg:#ffffff;
  --alt:#f5f5f7;
  --text:#1d1d1f;
  --text2:#6e6e73;
  --blue:#0071e3;
  --link:#0066cc;
  --line:#d2d2d7;
  --sf:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif;
  --maxw:980px;
  --ease:cubic-bezier(.28,.11,.32,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sf);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.5}
a{color:inherit;text-decoration:none;cursor:pointer}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
img{display:block;max-width:100%}
::selection{background:#b4d7ff}

/* ---------- NAVIGATION ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:200;height:48px;
  background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,.08)}
.nav-inner{max-width:1180px;margin:0 auto;height:100%;display:flex;align-items:center;justify-content:center;padding:0 22px;position:relative}
.logo{font-size:1.15rem;font-weight:600;letter-spacing:-.02em;position:absolute;left:22px;top:50%;transform:translateY(-50%)}
.logo img{height:26px;width:auto;display:inline-block;vertical-align:middle;margin-right:8px;position:relative;top:-2px}
.logo .at{color:var(--blue)}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-links a{font-size:.8rem;color:#1d1d1f;opacity:.85;transition:opacity .2s;font-weight:400;white-space:nowrap}
.nav-links a:hover{opacity:1}
.nav-links a.info{display:inline-flex;align-items:center;gap:8px}
.nav-links a.info svg{display:block}
.nav-links a.info span{display:none}
@media(max-width:1000px){.nav-links a.info span{display:inline}}
.burger{display:none;font-size:1.5rem;line-height:1;position:absolute;right:18px;top:50%;transform:translateY(-50%)}

/* ---------- TYPOGRAPHIE ---------- */
.eyebrow{font-size:1.25rem;font-weight:600;letter-spacing:-.01em;margin-bottom:6px}
h1,h2{font-weight:600;letter-spacing:-.022em;line-height:1.05}
h1{font-size:clamp(2.4rem,5.2vw,3.8rem)}
h2{font-size:clamp(2rem,4.2vw,3rem)}
.sub{font-size:clamp(1.05rem,1.8vw,1.45rem);font-weight:500;color:var(--text);margin-top:10px;line-height:1.35}
.platforms{margin-top:12px;color:var(--text2);font-size:.92rem}
.links{display:flex;gap:26px;justify-content:center;margin-top:20px;flex-wrap:wrap}
.lk{color:var(--link);font-size:clamp(1.05rem,1.6vw,1.3rem);display:inline-flex;align-items:center;gap:2px}
.lk:hover{text-decoration:underline}
.lk::after{content:"\203A";font-size:1.1em;margin-left:1px}

/* ---------- SECTIONS ---------- */
.tile{padding:80px 22px;text-align:center;background:var(--bg);overflow:hidden}
.tile.alt{background:var(--alt)}
.tile-copy{max-width:820px;margin:0 auto}
.tile-media{margin:42px auto 0;max-width:620px}
.hero{padding-top:130px}

.twoup{display:grid;grid-template-columns:1fr 1fr;gap:12px;background:var(--bg)}
.half{padding:70px 22px;text-align:center;overflow:hidden}
.half.alt{background:var(--alt)}
.half h2{font-size:clamp(1.7rem,3vw,2.3rem)}
.half .sub{font-size:clamp(1rem,1.6vw,1.2rem)}

/* ---------- ANIMATIONS AU DÉFILEMENT ---------- */
.reveal{opacity:0;transform:translateY(40px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.in{opacity:1;transform:none}
.tile-media[data-parallax]{will-change:transform}

/* ---------- LOGOS & CAPTURES ---------- */
/* !important : empeche un theme externe d'agrandir les images */
.app-logo{width:104px!important;height:104px!important;border-radius:24px;margin:0 auto 22px;box-shadow:0 12px 30px rgba(0,0,0,.18)}
.tile-logo{width:76px!important;height:76px!important;border-radius:18px;margin:0 auto 18px;box-shadow:0 8px 22px rgba(0,0,0,.14)}
.shot{width:100%;max-width:620px!important;height:auto!important;margin:0 auto;border-radius:18px;box-shadow:0 24px 60px rgba(0,0,0,.16)}
.shot.phone{max-width:280px!important;border-radius:26px}
.shots{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;align-items:flex-start;margin-top:10px}
.shots .shot{flex:0 0 auto;width:min(620px,100%)!important}
.shots .shot.phone{width:min(280px,42vw)!important}

/* ---------- BOUTONS DE TÉLÉCHARGEMENT ---------- */
.stores{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.store{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:12px;
  padding:10px 18px;background:#fff;text-align:left;transition:border-color .2s,background .2s}
.store:hover{border-color:#86868b;background:#fafafa}
.store b{font-weight:600;font-size:.98rem;display:block;line-height:1.15}
.store small{color:var(--text2);font-size:.7rem;text-transform:uppercase;letter-spacing:.05em}
.store.soon{opacity:.5;cursor:default}
.store.soon:hover{border-color:var(--line);background:#fff}

/* ---------- PAGE PRODUIT ---------- */
#appView{display:none}
#appView.on{display:block}
.back{position:fixed;top:60px;left:18px;z-index:150;background:rgba(255,255,255,.8);backdrop-filter:blur(10px);
  border:1px solid var(--line);border-radius:980px;padding:7px 15px;font-size:.85rem;display:flex;gap:6px;align-items:center}
.ahero{padding:130px 22px 70px;text-align:center;background:var(--alt)}
.ahero .eyebrow{color:var(--text2)}
.ahero h1{margin-bottom:10px}
.ahero .sub{max-width:760px;margin-left:auto;margin-right:auto}
.feature{padding:90px 22px;text-align:center}
.feature:nth-of-type(even){background:var(--alt)}
.feature h2{max-width:760px;margin:0 auto}
.feature .sub{max-width:700px;margin:14px auto 0;color:var(--text2)}

/* ---------- SECTION LETTRES (SenLangEdit) ---------- */
.glyphsec{padding:110px 22px;text-align:center;background:#000;color:#f5f5f7;overflow:hidden}
.gstage{position:relative;height:min(40vh,340px);display:grid;place-items:center;margin:14px 0}
.gstage span{position:absolute;font-size:min(36vh,300px);font-weight:600;line-height:1;opacity:0;transform:scale(.85);
  transition:opacity .6s var(--ease),transform .6s var(--ease)}
.gstage span.on{opacity:1;transform:scale(1)}
.glyphsec p{color:#a1a1a6;font-size:1.3rem;max-width:40ch;margin:0 auto}

/* ---------- FENÊTRE (confidentialité) ---------- */
.ov{position:fixed;inset:0;z-index:500;background:rgba(0,0,0,.4);backdrop-filter:blur(4px);
  display:none;align-items:flex-end;justify-content:center}
.ov.show{display:flex}
.sheet{width:100%;max-width:480px;background:#fff;border-radius:18px 18px 0 0;padding:26px 24px 34px;
  max-height:92vh;overflow:auto;transform:translateY(100%);transition:transform .35s var(--ease)}
.ov.show .sheet{transform:none}
@media(min-width:600px){.ov{align-items:center}.sheet{border-radius:18px}}
.sheet h3{font-size:1.4rem;font-weight:600}
.sheet .x{float:right;font-size:1.4rem;color:var(--text2);line-height:1}
.policy{font-size:.9rem;color:var(--text2);line-height:1.6;margin-top:6px}
.policy .lead{color:var(--text);font-size:1rem;margin-bottom:6px}
.policy h4{color:var(--text);font-size:.95rem;font-weight:600;margin:16px 0 4px}
.policy p{margin-bottom:3px}

/* ---------- PIED DE PAGE ---------- */
footer{background:var(--alt);color:var(--text2);font-size:.78rem;padding:40px 22px}
.foot-inner{max-width:var(--maxw);margin:0 auto}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 22px;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:18px}
.foot-links a:hover{text-decoration:underline}

/* ---------- RESPONSIVE ---------- */
@media(max-width:1000px){
  .nav-links{position:fixed;top:48px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(255,255,255,.96);backdrop-filter:blur(20px);border-bottom:1px solid var(--line);padding:8px 0;display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 24px;font-size:1rem;width:100%}
  .burger{display:block}
  .twoup{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}