/* Yezh IA - feuille de style commune. Layout: pages Apprendre, Prononciation, Culture, Jeunesse; rounded-block grid like an app, marinière stripe bands as the only ornament */
:root{
  --bg:#F8F7F3; --surface:#FFFFFF; --soft:#EDF0F5; --ciel:#DCE7F3;
  --fg:#111418; --muted:#4E5666; --line:#D5DCE6;
  --navy:#14254A; --on-navy:#F8F7F3; --navy-muted:#B9C6DE; --accent-text:#14254A;
  --btn:#14254A; --on-btn:#F8F7F3;
  --pompon:#C8102E; --on-pompon:#FFFFFF;
  --stripe-a:#F8F7F3; --stripe-b:#14254A;
  --ok:#1D6B3A; --ko:#B3261E;
  --display:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Geist",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Geist Mono",ui-monospace,Menlo,monospace;
  --r-sm:10px; --r-md:20px; --r-lg:32px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0B1224; --surface:#121C36; --soft:#18244A; --ciel:#1F2F5C;
  --fg:#F1F3F8; --muted:#AEB8CE; --line:#26345E;
  --navy:#1A2B57; --on-navy:#F1F3F8; --navy-muted:#AEB8CE; --accent-text:#B9C6DE;
  --btn:#DCE7F3; --on-btn:#0B1224;
  --pompon:#D42A42; --on-pompon:#FFFFFF;
  --stripe-a:#F1F3F8; --stripe-b:#0B1224;
  --ok:#7BD39A; --ko:#F2A39B; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0B1224; --surface:#121C36; --soft:#18244A; --ciel:#1F2F5C;
  --fg:#F1F3F8; --muted:#AEB8CE; --line:#26345E;
  --navy:#1A2B57; --on-navy:#F1F3F8; --navy-muted:#AEB8CE; --accent-text:#B9C6DE;
  --btn:#DCE7F3; --on-btn:#0B1224;
  --pompon:#D42A42; --on-pompon:#FFFFFF;
  --stripe-a:#F1F3F8; --stripe-b:#0B1224;
  --ok:#7BD39A; --ko:#F2A39B; color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:17px;line-height:1.55;padding-inline:16px;padding-block:16px 32px}
.wrap{max-width:1240px;margin:0 auto;display:flex;flex-direction:column;gap:20px}
a{color:inherit}
h1,h2,h3{font-family:var(--display);font-weight:600;margin:0;text-wrap:balance;letter-spacing:-.02em}
p{margin:0}
em{font-style:italic;font-weight:400}
.label{font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.stripes{border-radius:var(--r-sm);border:1px solid var(--stripe-b);background:repeating-linear-gradient(180deg,var(--stripe-a) 0 14px,var(--stripe-b) 14px 22px)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 26px;border-radius:999px;font-weight:600;text-decoration:none;border:1.5px solid transparent;font-size:16px;cursor:pointer;font-family:var(--sans);transition:transform .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--btn);color:var(--on-btn)}
.btn-ghost{border-color:var(--fg);color:var(--fg);background:transparent}
.btn-red{background:var(--pompon);color:var(--on-pompon)}
.btn-light{background:var(--on-navy);color:#14254A}
:focus-visible{outline:3px solid var(--pompon);outline-offset:3px}

/* nav */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 10px 10px 20px;border-radius:999px;background:var(--surface);border:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand span{font-family:var(--display);font-weight:600;font-size:28px;letter-spacing:-1px;line-height:1}
nav ul{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0;font-size:15px}
nav ul a{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border-radius:999px;text-decoration:none}
nav ul a:hover{background:var(--soft)}
nav ul a[aria-current="page"]{background:var(--ciel);font-weight:600}
.nav-cta{display:flex;gap:8px}
.menu-btn{display:none;width:44px;height:44px;border-radius:999px;border:0;background:var(--soft);color:var(--fg);cursor:pointer}
@media (max-width:900px){
  nav ul,.nav-cta .btn-ghost{display:none}
  .menu-btn{display:inline-flex;align-items:center;justify-content:center}
  header.open{flex-wrap:wrap;border-radius:28px}
  header.open nav{flex-basis:100%;order:3}
  header.open nav ul{display:flex;flex-direction:column;align-items:stretch;gap:4px;padding:8px 0 12px}
  .nav-cta .btn{min-height:44px;padding:0 18px}
}

/* grid blocks */
.page{display:flex;flex-direction:column;gap:20px}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:20px}
.block{border-radius:var(--r-lg);padding:36px;min-width:0}
.b-white{background:var(--surface);border:1px solid var(--line)}
.b-soft{background:var(--soft)}
.b-ciel{background:var(--ciel)}
.b-navy{background:var(--navy);color:var(--on-navy)}
.b-navy .label{color:var(--navy-muted)}
.b-red{background:var(--pompon);color:var(--on-pompon)}
.b-red .label{color:var(--on-pompon)}
.s4{grid-column:span 4}.s5{grid-column:span 5}.s6{grid-column:span 6}.s7{grid-column:span 7}.s8{grid-column:span 8}.s12{grid-column:span 12}
.stack{display:flex;flex-direction:column;gap:14px;min-width:0}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.small{font-size:14px;color:var(--muted)}
.muted{color:var(--muted)}
.b-navy .muted{color:var(--navy-muted)}

/* heroes */
.hero{padding-block:48px 24px}
.hero-text{grid-column:span 7;display:flex;flex-direction:column;gap:28px;padding:24px 8px}
.hero h1{font-size:clamp(52px,8vw,104px);line-height:.95;letter-spacing:-.04em}
.hero h1 em{color:var(--accent-text)}
.chip{align-self:flex-start;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface)}
.lead{font-size:clamp(18px,2vw,21px);line-height:1.5;color:var(--muted);max-width:34em}
.hero-side{grid-column:span 5;display:flex;flex-direction:column;gap:20px;min-width:0}
.hero-side .stripes{height:120px;border-radius:var(--r-lg)}
.sec-title{grid-column:span 12;font-size:clamp(38px,5.4vw,68px);line-height:1;padding:48px 8px 8px;max-width:17ch}

/* demo chat */
.demo{display:flex;flex-direction:column;gap:12px;padding:28px}
.demo-head{display:flex;justify-content:space-between;align-items:center;gap:12px}
.msgs{display:flex;flex-direction:column;gap:10px;min-height:190px}
.bubble{max-width:88%;padding:12px 16px;border-radius:20px 20px 20px 6px;background:var(--bg);color:var(--fg);animation:pop .25s ease both}
.bubble .br{font-family:var(--display);font-size:21px;line-height:1.25}
.bubble .fr{font-size:13.5px;color:var(--muted);margin-top:2px}
.bubble.me{align-self:flex-end;border-radius:20px 20px 6px 20px;background:var(--ciel)}
.bubble.note{font-size:14.5px;line-height:1.45}
.fb-ok{color:var(--ok);font-weight:600}
.fb-ko{color:var(--ko);font-weight:600}
.opts{display:flex;flex-wrap:wrap;gap:8px}
.opt{min-height:44px;padding:0 16px;border-radius:999px;border:1.5px solid var(--on-navy);background:transparent;color:var(--on-navy);font-family:var(--display);font-size:17px;cursor:pointer}
.opt:hover{background:rgba(255,255,255,.08)}
.restart{background:none;border:0;color:var(--navy-muted);font:inherit;font-size:14px;text-decoration:underline;cursor:pointer;padding:0;min-height:32px}
@keyframes pop{from{transform:translateY(6px);opacity:.4}to{transform:none;opacity:1}}

/* learn page */
.step{grid-column:span 4;display:flex;flex-direction:column;justify-content:space-between;gap:32px;min-height:300px}
.step h3{font-size:clamp(28px,2.6vw,34px);line-height:1.1}
.step p{margin-top:10px}
.strike{text-decoration:line-through;opacity:.6}
.who{grid-column:span 3;display:flex;flex-direction:column;gap:10px;padding:28px}
.who h3{font-size:23px}
.who p{font-size:16px;color:var(--muted)}
.dash{grid-column:span 12;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:center;padding:48px}
.dash h2{font-size:clamp(36px,4.6vw,60px);line-height:1}
.dash-card{display:flex;flex-direction:column;gap:16px;padding:26px;border-radius:26px;background:var(--bg);color:var(--fg)}
.dash-top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.badge{padding:6px 12px;border-radius:999px;font-family:var(--mono);font-size:12.5px;letter-spacing:.06em}
.badge.red{background:var(--pompon);color:var(--on-pompon)}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.stat{padding:16px;border-radius:18px;background:var(--soft);min-width:0}
.stat b{display:block;font-family:var(--display);font-weight:600;font-size:32px;line-height:1.1;font-variant-numeric:tabular-nums}
.bar{height:12px;border-radius:999px;background:var(--soft);overflow:hidden}
.bar i{display:block;width:38%;height:100%;border-radius:999px;background:var(--btn)}
.bar-legend{display:flex;justify-content:space-between;font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.price-free{grid-column:span 4;display:flex;flex-direction:column;justify-content:space-between;gap:28px}
.price-year{grid-column:span 8;display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap}
.amount{font-family:var(--display);font-weight:600;font-size:clamp(64px,9vw,120px);line-height:.9;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.per{font-size:20px;font-weight:500}
.engage{grid-column:span 12;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.engage > div{display:flex;flex-direction:column;gap:10px;min-width:0}
.engage h3{font-size:24px}

/* culture page */
.word{display:flex;flex-direction:column;gap:18px;justify-content:space-between}
.word .br{font-family:var(--display);font-weight:600;font-size:clamp(64px,9vw,112px);line-height:.95;letter-spacing:-.03em}
.word .fr{font-size:20px}
.prefixes{display:flex;flex-wrap:wrap;gap:8px}
.pfx{min-height:48px;padding:0 20px;border-radius:999px;border:1.5px solid var(--fg);background:transparent;color:var(--fg);font-family:var(--display);font-size:20px;cursor:pointer}
.pfx[aria-pressed="true"]{background:var(--btn);color:var(--on-btn);border-color:var(--btn)}
.pfx-out{padding:24px;border-radius:24px;background:var(--soft);min-height:118px;display:flex;flex-direction:column;gap:6px}
.pfx-out b{font-family:var(--display);font-size:26px;font-weight:600}
.cities{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.cities div{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.cities div:nth-child(odd){padding-right:20px}
.cities div:nth-child(even){padding-left:20px;border-left:1px solid var(--line)}
.cities b{font-family:var(--display);font-weight:600;font-size:19px}
.agenda{display:flex;flex-direction:column}
.agenda li{display:grid;grid-template-columns:110px minmax(0,1fr);gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.agenda li:last-child{border-bottom:0}
.agenda .when{font-family:var(--mono);font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-top:4px}
.agenda h3{font-size:22px}
ul.clean{list-style:none;margin:0;padding:0}
.quote{font-family:var(--display);font-size:clamp(34px,4.6vw,60px);line-height:1.05;letter-spacing:-.02em}

/* youth page */
.big-num{font-family:var(--display);font-weight:600;font-size:clamp(56px,7vw,88px);line-height:.95;letter-spacing:-.03em}
.check{display:flex;gap:12px;align-items:flex-start}
.check svg{flex:none;margin-top:3px}

/* faq + signup */
.faq{grid-column:span 12;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
details{border-radius:26px;background:var(--surface);border:1px solid var(--line);padding:0 28px}
summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:24px 0;font-weight:600;font-size:18px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:var(--mono);font-size:22px;color:var(--muted)}
details[open] summary::after{content:"–"}
details p{padding-bottom:24px;color:var(--muted);max-width:60ch}
.signup{grid-column:span 12;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;align-items:center;padding:48px}
.signup h2{font-size:clamp(34px,4.4vw,56px);line-height:1}
form{display:flex;flex-direction:column;gap:12px}
label{font-size:14px;font-weight:500}
.field{display:flex;gap:8px;flex-wrap:wrap}
input[type=email]{flex:1 1 220px;min-height:52px;border-radius:999px;border:1.5px solid var(--navy-muted);background:var(--on-navy);color:#111418;padding:0 20px;font:inherit;font-size:16px}
.form-msg{font-size:15px;min-height:1.5em}

footer{display:flex;flex-direction:column;gap:32px;padding:40px;border-radius:var(--r-lg);background:#111418;color:#F8F7F3}
footer .bye{font-family:var(--display);font-style:italic;font-size:clamp(64px,10vw,150px);line-height:.9;letter-spacing:-.04em}
footer .row{justify-content:space-between}
footer ul{display:flex;flex-wrap:wrap;gap:20px;list-style:none;margin:0;padding:0;font-size:15px}
footer .label{color:#B9C6DE}
footer p{color:#D3DBEA;max-width:40em}

@media (max-width:900px){
  .hero-text,.hero-side,.step,.price-free,.price-year,.s4,.s5,.s6,.s7,.s8{grid-column:span 12}
  .who{grid-column:span 6}
  .dash,.signup,.faq,.engage{grid-template-columns:minmax(0,1fr)}
  .dash,.signup{padding:32px}
}
@media (max-width:560px){
  .who{grid-column:span 12}
  .block{padding:26px}
  .dash,.signup{padding:24px}
  .step{min-height:0}
  .stat b{font-size:24px}
  footer{padding:28px}
  .hero{padding-block:24px 8px}
  .cities{grid-template-columns:minmax(0,1fr)}
  .cities div:nth-child(odd),.cities div:nth-child(even){padding-left:0;padding-right:0;border-left:0}
  .agenda li{grid-template-columns:minmax(0,1fr);gap:4px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* lien d'evitement */
.skip{position:absolute;left:-9999px;top:8px;z-index:20;padding:10px 16px;border-radius:999px;background:var(--btn);color:var(--on-btn)}
.skip:focus{left:16px}
/* prononciation */
.pron-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.pron{display:flex;flex-direction:column;gap:10px;padding:28px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);min-width:0}
.pw{font-family:var(--display);font-weight:600;font-size:clamp(44px,5vw,64px);line-height:1;letter-spacing:-.02em;color:var(--accent-text)}
.pron .eq{font-size:16px}
.pron .ex{font-size:15px;color:var(--muted);margin-top:auto;padding-top:10px;border-top:1px solid var(--line)}
.pron u,.stress{text-decoration:underline;text-decoration-color:var(--pompon);text-decoration-thickness:3px;text-underline-offset:6px}
.q-fb{min-height:1.6em;font-size:16px}
.opt.good{background:var(--on-navy);color:#14254A}
.opt:disabled{cursor:default;opacity:.55}
.opt.good:disabled{opacity:1}
.legal{max-width:760px}
.legal h2{font-size:28px;margin-top:12px}
.legal p{color:var(--muted)}
@media (max-width:1100px){.pron-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:900px){.pron-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.pron-grid{grid-template-columns:minmax(0,1fr)}}