/* StackMind AI — site vitrine. Aucune dépendance externe, aucun traceur. */
@font-face{font-family:"Fredoka";src:url("../fonts/Fredoka.woff2") format("woff2");font-weight:300 700;font-display:swap}
@font-face{font-family:"Nunito";src:url("../fonts/Nunito.woff2") format("woff2");font-weight:200 1000;font-display:swap}

:root{
  --ink:#1c1840;--ink-2:#5f5b7d;--line:#e6e4f0;--violet:#5a32e0;--violet-2:#efeaff;--pink:#ff4f8b;--sky:#1a9dff;
  --paper:#ffffff;--bg:#f7f7fb;--dark:#14122b;
  --radius:18px;--shadow:0 1px 2px rgba(20,18,43,.05),0 8px 24px rgba(20,18,43,.06);
  --wrap:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{margin:0;font-family:"Nunito",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:1.0625rem;line-height:1.6;color:var(--ink);background:var(--bg)}
img,video{max-width:100%;display:block}
a{color:var(--violet)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--sky);outline-offset:3px;border-radius:10px}
h1,h2,h3{font-family:"Fredoka","Nunito",sans-serif;line-height:1.15;margin:0 0 .5em;color:var(--ink);letter-spacing:-.01em}
h2{font-size:clamp(1.8rem,4.6vw,2.6rem);font-weight:600}
h3{font-size:1.15rem;font-weight:600}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;background:var(--paper);padding:10px 16px;border-radius:12px;z-index:100;font-weight:800}
.skip:focus{left:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* barre du haut */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:12px;justify-content:space-between;
  padding:10px 20px;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:"Fredoka",sans-serif;font-weight:600;font-size:1.1rem}
.brand img{border-radius:10px;width:34px;height:34px}
.nav{display:none;gap:2px}
.nav a{text-decoration:none;color:var(--ink-2);font-weight:700;font-size:.97rem;padding:8px 12px;border-radius:10px}
.nav a:hover{color:var(--ink);background:var(--bg)}
@media (min-width:860px){.nav{display:flex}}
.lang-switch{display:flex;border:1px solid var(--line);border-radius:10px;padding:3px}
.lang-switch button{font:inherit;font-weight:800;font-size:.85rem;border:0;background:transparent;color:var(--ink-2);padding:5px 10px;border-radius:7px;cursor:pointer;min-width:40px;min-height:34px}
.lang-switch button[aria-pressed="true"]{background:var(--ink);color:#fff}

/* héros : titre centré + carrousel d'IA en cartes de verre (version claire) */
.hero{position:relative;overflow:hidden;background:#f6f3ff;padding:0 0 44px;border-bottom:1px solid var(--line)}
.blobs{position:absolute;inset:0;pointer-events:none;filter:blur(70px);opacity:.75}
.blobs i{position:absolute;border-radius:50%;animation:drift 22s ease-in-out infinite alternate}
.blobs i:nth-child(1){width:620px;height:620px;left:-160px;top:180px;background:#c9b6ff}
.blobs i:nth-child(2){width:560px;height:560px;right:-140px;top:60px;background:#ffc2dc;animation-delay:-8s}
.blobs i:nth-child(3){width:520px;height:420px;left:35%;top:420px;background:#b9e4ff;animation-delay:-14s}
@keyframes drift{to{transform:translate(60px,-40px) scale(1.08)}}
.hero-top{position:relative;text-align:center;padding-top:56px}
.badge{display:inline-flex;gap:8px;align-items:center;margin:0 0 16px;font-weight:700;font-size:.92rem;color:var(--ink-2);
  background:rgba(255,255,255,.7);border:1px solid rgba(255,255,255,.95);padding:6px 14px;border-radius:999px;box-shadow:0 4px 14px rgba(90,50,224,.08)}
.badge b{color:#d18a00;text-transform:uppercase;letter-spacing:.04em}
.badge b::before{content:"⚡ "}
.hero h1{font-size:clamp(2.6rem,8.4vw,5.2rem);font-weight:700;line-height:1;letter-spacing:-.03em;margin:0 0 18px}
.hero h1 span{display:block}
.grad{background:linear-gradient(90deg,var(--violet),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent;padding-bottom:.06em}
.hero .lead{font-size:1.12rem;color:var(--ink-2);max-width:34em;margin:0 auto 26px}
.cta-row{display:flex;justify-content:center;flex-wrap:wrap;gap:12px 18px;align-items:center}
.link-trailer{font-weight:800;text-decoration:none;color:var(--ink);padding:12px 6px}
.link-trailer:hover{color:var(--violet)}

/* bouton Google Play (dessiné en CSS : on n'embarque pas le logo officiel) */
.play{display:inline-flex;align-items:center;gap:12px;text-decoration:none;background:var(--dark);color:#fff;border-radius:14px;padding:10px 22px 10px 16px;transition:background .15s,transform .15s;box-shadow:0 8px 22px rgba(20,18,43,.18)}
.play:hover{background:#2a2650;transform:translateY(-1px)}
.play svg{width:30px;height:30px;flex:none}
.play small{display:block;font-size:.72rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;opacity:.75;line-height:1.1}
.play strong{display:block;font-family:"Fredoka",sans-serif;font-size:1.3rem;line-height:1.15;font-weight:500}

/* carrousel d'IA */
.carousel{position:relative;--gap:250px;--w:220px}
@media (max-width:700px){.carousel{--gap:150px;--w:172px}}
.track{position:relative;list-style:none;margin:0;padding:0;height:410px}
@media (max-width:700px){.track{height:350px}}
.ai-card{position:absolute;left:50%;top:116px;width:var(--w);padding:96px 16px 16px;border-radius:22px;cursor:pointer;text-align:left;
  background:rgba(255,255,255,.6);border:1px solid rgba(255,255,255,.95);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 18px 40px rgba(90,50,224,.12),inset 0 0 0 1px rgba(90,50,224,.06);
  transform:translateX(calc(-50% + var(--o,0) * var(--gap))) translateY(calc(var(--a,0) * 26px)) scale(calc(1.06 - var(--a,0) * .1));
  z-index:calc(10 - var(--a,0));opacity:calc(1 - var(--a,0) * .12);transition:transform .6s cubic-bezier(.2,.8,.2,1),opacity .4s,background .4s}
@media (max-width:700px){.ai-card{top:104px;padding-top:76px}}
.ai-card[aria-hidden="true"]{opacity:0;pointer-events:none}
.ai-card.on{background:rgba(255,255,255,.88);box-shadow:0 24px 50px rgba(90,50,224,.2),inset 0 0 0 1.5px rgba(90,50,224,.22)}
.stage{position:absolute;left:50%;top:0;width:148px;transform:translate(-50%,-50%)}
@media (max-width:700px){.stage{width:116px}}
.stage::before,.stage::after{content:"";position:absolute;left:50%;transform:translateX(-50%);border-radius:50%;border:1.5px solid rgba(90,50,224,.16)}
.stage::before{width:150%;height:36px;bottom:-14px}.stage::after{width:108%;height:22px;bottom:-6px}
.stage img{position:relative;z-index:1;width:100%;height:auto;border-radius:50%;filter:drop-shadow(0 14px 18px rgba(40,20,120,.25));transition:transform .6s}
.ai-card.on .stage img{transform:translateY(-10px) scale(1.07)}
.meta strong{display:block;font-family:"Fredoka",sans-serif;font-weight:600;font-size:1.2rem;line-height:1.15}
.meta em{display:block;font-style:normal;font-size:.86rem;color:var(--ink-2);margin-top:4px;line-height:1.35;min-height:2.7em}
.rar{display:inline-block;margin-top:10px;font-size:.7rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:3px 10px;border-radius:999px}
.rar::before{content:"♛ "}
.r-c .rar{background:#eeedf5;color:#5f5b7d}.r-r .rar{background:#e1f1ff;color:#1565c0}.r-e .rar{background:#efe5ff;color:#6a1fd0}.r-l .rar{background:#fff1c7;color:#a25b00}
.car-nav{position:relative;display:flex;align-items:center;justify-content:center;gap:16px;margin-top:6px;padding:0 16px}
.car-nav button{flex:none;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.85);color:var(--ink);font-size:1.5rem;line-height:1;cursor:pointer}
.car-nav button:hover{border-color:var(--violet);color:var(--violet)}
.more{margin:0;font-weight:700;color:var(--ink-2);font-size:.95rem;text-align:center}

/* le jeu : téléphone + liste */
section{padding:80px 0}
.kicker{display:inline-block;font-weight:800;color:var(--violet);text-transform:uppercase;letter-spacing:.1em;font-size:.78rem;margin-bottom:8px}
.center{text-align:center}
.intro{max-width:38em;margin:0 auto 40px;color:var(--ink-2);font-size:1.08rem}
.game{display:grid;gap:48px;align-items:center}
.game > div:last-child{text-align:center}
@media (min-width:960px){.game{grid-template-columns:330px 1fr}.game > div:last-child{text-align:left}.game .intro{margin-left:0;margin-bottom:28px}}
.hero-media{position:relative}
.phone{position:relative;width:min(290px,72vw);margin:0 auto;aspect-ratio:9/16;border-radius:38px;background:var(--dark);padding:8px;box-shadow:0 30px 60px rgba(90,50,224,.2)}
.phone video{width:100%;height:100%;object-fit:cover;border-radius:31px;background:#bfeaff}
.sound{position:absolute;right:18px;bottom:18px;border:0;border-radius:999px;background:rgba(20,18,43,.72);color:#fff;font:inherit;font-weight:800;font-size:.85rem;padding:6px 12px;cursor:pointer;min-height:36px}
.hero-mascot{position:absolute;width:clamp(64px,18vw,92px);left:max(0px,calc(50% - min(145px,36vw) - 54px));bottom:-6px}
.feat-list{list-style:none;padding:0;margin:0;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));text-align:left}
.card{background:var(--paper);border-radius:var(--radius);padding:20px;border:1px solid var(--line)}
.feat{display:flex;gap:14px;align-items:flex-start}
.feat .ico{flex:none;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:1.25rem}
.feat h3{margin:2px 0 4px;font-size:1.05rem}
.feat p{color:var(--ink-2);margin:0;font-size:.95rem;line-height:1.5}
.c1{background:#ffe8f0}.c2{background:#fff4d6}.c3{background:#e3f4ff}.c4{background:#ece6ff}.c5{background:#dff7ec}.c6{background:#ffeedf}

/* bande-annonce YouTube (chargée seulement au clic, domaine sans cookies) */
.trailer{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.yt{position:relative;max-width:900px;margin:0 auto;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:var(--dark);box-shadow:var(--shadow)}
.yt button{position:absolute;inset:0;width:100%;height:100%;border:0;padding:0;cursor:pointer;background:transparent}
.yt img{width:100%;height:100%;object-fit:cover}
.yt .playbtn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:76px;height:76px;border-radius:50%;background:rgba(20,18,43,.82);display:grid;place-items:center;transition:transform .15s,background .15s}
.yt .playbtn::before{content:"";margin-left:6px;border-style:solid;border-width:14px 0 14px 22px;border-color:transparent transparent transparent #fff}
.yt button:hover .playbtn{transform:translate(-50%,-50%) scale(1.06);background:var(--pink)}
.yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.yt-note{max-width:900px;margin:14px auto 0;color:var(--ink-2);font-size:.88rem;text-align:center}
.yt-note a{color:var(--ink-2)}

/* galerie */
.shots{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 20px 20px;margin:0 -20px;list-style:none;scrollbar-width:thin}
.shots li{flex:0 0 auto;width:min(220px,60vw);scroll-snap-align:center}
.shots img{width:100%;height:auto;border-radius:16px;aspect-ratio:9/16;background:#e6ecf7;border:1px solid var(--line)}
@media (min-width:1100px){.shots{justify-content:center;flex-wrap:wrap;overflow:visible}.shots li{width:240px}}

/* FAQ */
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:14px;margin:0 auto 10px;max-width:780px}
.faq summary{cursor:pointer;list-style:none;padding:16px 52px 16px 20px;font-weight:800;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--ink-2);font-size:1.4rem;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 20px 16px;margin:0;color:var(--ink-2)}

/* bandeau final */
.final{text-align:center;padding-bottom:84px}
.final .box{background:linear-gradient(135deg,#efe9ff,#ffe9f3 60%,#e6f4ff);border:1px solid var(--line);border-radius:28px;padding:44px 24px}
.final img{width:120px;margin:0 auto 12px}
.final p{color:var(--ink-2);margin-bottom:22px}

/* pied de page */
.footer{background:var(--paper);border-top:1px solid var(--line);color:var(--ink-2);padding:30px 0;text-align:center;font-size:.95rem}
.footer a{color:var(--ink);font-weight:700}
.footer p{margin:.35em 0}
.footer .fine{opacity:.8;font-size:.84rem}

/* pages légales */
.legal-page{background:var(--bg)}
.legal-wrap{max-width:780px;margin:0 auto;padding:32px 20px 56px}
.legal{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:28px clamp(18px,4vw,40px)}
.legal h1{font-size:clamp(1.7rem,4.6vw,2.2rem)}
.legal h2{font-size:1.2rem;margin-top:1.6em}
.legal .upd{color:var(--ink-2);font-weight:700}
.legal code{background:var(--violet-2);padding:1px 6px;border-radius:6px}
.back{margin-top:24px;text-align:center;font-weight:800}

/* 404 */
.notfound{min-height:70vh;display:grid;place-items:center;text-align:center;padding:40px 16px}
.notfound img{width:180px;margin:0 auto 10px}
.btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;font-weight:800;padding:12px 24px;border-radius:12px}
.btn:hover{background:var(--violet)}