:root{
  --nuit:#12293F; --papier:#FBF9F5; --texte:#DCE3EA; --doux:#A9B8C7;
  --or:#ED6B25; --or-clair:#F7A06E; --err:#FFB4A2;
  --ligne:rgba(251,249,245,.50);
  --serif:Georgia,'Times New Roman',serif;
  --sans:system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--nuit)}
body{margin:0;min-height:100vh;min-height:100dvh;background:var(--nuit);color:var(--texte);font:18px/1.55 var(--sans);overflow-x:hidden;-webkit-tap-highlight-color:transparent}
[hidden]{display:none !important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Décor */
#fond{position:fixed;left:0;top:0;width:100%;height:100vh;height:100lvh;z-index:0;display:block;pointer-events:none;opacity:0;animation:apparait 2.6s ease .3s forwards}
.lueur{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px circle at var(--mx,50%) var(--my,28%),rgba(237,107,37,.11),transparent 62%),
    radial-gradient(900px 520px at 88% 108%,rgba(94,138,190,.16),transparent 70%)}

/* Structure */
.app{position:relative;z-index:1;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
main{flex:1;display:flex;flex-direction:column}
.scene{flex:1;display:grid;align-items:center;justify-items:center;margin:0;padding:12px 20px 56px}
.etape{grid-area:1/1;width:min(640px,100%);min-width:0}

/* En-tête : retour + fil de progression */
.haut{display:flex;align-items:center;width:min(720px,100%);margin:0 auto;padding:12px 20px 0;min-height:56px}
.logo{display:block;flex:none;height:17px;width:auto;opacity:0;animation:apparait 1.1s ease .1s forwards}
.marque{flex:1;min-width:0;height:36px;margin-left:16px;overflow:visible;fill:none;opacity:0;animation:apparait 1.4s ease .35s forwards}
.marque path{stroke-linecap:round;stroke-linejoin:round}
.marque .f1{stroke:#F2CFB4;stroke-opacity:.55;stroke-width:1.3}
.marque .f2{stroke:#BFCEDC;stroke-opacity:.5;stroke-width:1.3}
.marque .f3{stroke:var(--or);stroke-width:2.6}
.marque .pt{fill:var(--or);fill-opacity:.7;transition:fill-opacity .6s}
.marque .onde{fill:none;stroke:var(--or);stroke-width:1.5;opacity:0;transform-box:fill-box;transform-origin:center}
.marque.ok .pt{fill-opacity:1}
.marque.ok .onde{animation:onde-pt 1.6s ease-out .5s both}
/* Le bouton retour apparaît avec la première étape et pousse le logo vers la droite */
.retour{flex:none;width:0;height:44px;margin-right:0;overflow:hidden;opacity:0;visibility:hidden;border:0;border-radius:50%;background:transparent;color:var(--papier);cursor:pointer;display:grid;place-items:center;touch-action:manipulation;
  transition:width .55s var(--ease),margin-right .55s var(--ease),opacity .4s,visibility 0s .55s,background-color .25s,transform .25s var(--ease)}
.app.en-cours .retour{width:44px;margin-right:10px;opacity:1;visibility:visible;transition-delay:0s,0s,.08s,0s,0s,0s}
.retour svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.retour:hover{background:rgba(251,249,245,.1)}
.retour:active{transform:scale(.92)}
.retour:focus-visible{outline:3px solid var(--papier);outline-offset:2px}


/* Textes */
.kick{margin:0 0 14px;font-size:13px;line-height:1.3;letter-spacing:.2em;text-transform:uppercase;color:var(--or-clair);font-weight:700}
h1,h2{margin:0;font-weight:400;font-family:var(--serif);color:var(--papier)}
h1:focus,h2:focus{outline:none}
h1{font-size:clamp(52px,14vw,128px);line-height:1;letter-spacing:-.02em;white-space:nowrap}
h1 .ia{color:var(--or)}
.q{font-size:clamp(28px,5.6vw,50px);line-height:1.14;letter-spacing:-.01em}
.m{display:inline-block;overflow:hidden;vertical-align:top;padding:.04em 0 .16em;margin-bottom:-.16em}
.w{display:inline-block}
.sous{margin:12px 0 26px;font:italic 400 clamp(20px,3.6vw,28px)/1.3 var(--serif);color:#C9D3DD}
.lead{margin:0 0 6px;font-size:19px;line-height:1.55;color:var(--papier)}
.aide,.hint{margin:10px 0 0;font-size:16px;line-height:1.5;color:var(--doux)}
.hint{margin:0 0 6px}
.corps{margin:20px 0 0;font-size:18px;color:var(--texte)}
p{margin:0}

.infos{margin:22px 0 10px;padding:2px 0 2px 18px;border-left:3px solid var(--or);display:grid;gap:12px}
.infos div{display:grid;grid-template-columns:76px 1fr;gap:10px}
.infos dt{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--or-clair);font-weight:700;padding-top:5px}
.infos dd{margin:0;color:var(--papier)}

.prog{margin:6px 0 0;color:var(--texte)}
.prog summary{display:flex;align-items:center;gap:10px;min-height:48px;cursor:pointer;color:var(--or-clair);font-weight:600;list-style:none;touch-action:manipulation}
.prog summary::-webkit-details-marker{display:none}
.prog summary::before{content:'+';font-size:26px;line-height:1;width:20px;text-align:center;transition:transform .35s var(--ease)}
.prog[open] summary::before{transform:rotate(45deg)}
.prog summary:focus-visible{outline:3px solid var(--papier);outline-offset:2px;border-radius:4px}
.prog p{font-size:16.5px;margin:0 0 12px;animation:monte .5s var(--ease) both}

/* Champs : une ligne, un trait orange qui se déploie au focus */
.champs{display:grid;gap:26px;margin-top:30px}
.champs.deux{grid-template-columns:1fr 1fr;gap:26px 28px}
.chips + .champs{margin-top:34px}
.champ{position:relative}
.champ label{display:block;margin:0 0 2px;font-size:13px;line-height:1.4;letter-spacing:.12em;text-transform:uppercase;color:var(--doux);font-weight:700;transition:color .3s}
.champ:focus-within label{color:var(--or-clair)}
.fac{font-weight:400;letter-spacing:.04em;text-transform:none;opacity:.85;margin-left:6px}
.champ input,.champ textarea{display:block;width:100%;background:transparent;border:0;border-bottom:2px solid var(--ligne);border-radius:0;color:var(--papier);
  font:400 28px/1.3 var(--serif);padding:8px 0 10px;outline:none;caret-color:var(--or);transition:border-color .3s;-webkit-appearance:none;appearance:none}
.champ textarea{resize:none;min-height:3.2em}
.champ::after{content:'';position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--or);transform:scaleX(0);transition:transform .5s var(--ease)}
.champ:focus-within::after{transform:scaleX(1)}
.champ.invalide input,.champ.invalide textarea{border-bottom-color:var(--err)}
.champ.invalide label{color:var(--err)}
.champ input:-webkit-autofill{-webkit-text-fill-color:var(--papier);box-shadow:0 0 0 1000px var(--nuit) inset;transition:background-color 99999s}
.autre.apparait{animation:monte .45s var(--ease) both}

/* Pastilles de choix */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{position:relative;display:block;margin:0}
.chip input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.chip span{display:inline-flex;align-items:center;min-height:50px;padding:0 22px;border-radius:999px;border:2px solid var(--ligne);color:var(--papier);font-weight:600;
  transition:background-color .25s,border-color .25s,color .25s,transform .25s var(--ease)}
.chip input:checked + span{background:var(--or);border-color:var(--or);color:var(--nuit);animation:pop .45s var(--ease)}
.chip input:focus-visible + span{outline:3px solid var(--papier);outline-offset:3px}
.chip:active span{transform:scale(.96)}
.chips.invalide .chip span{border-color:var(--err)}
@media (hover:hover){.chip input:not(:checked) + span:hover{border-color:var(--or-clair)}}

/* Données personnelles */
.rgpd{margin-top:26px;padding:18px 20px;border-radius:14px;background:rgba(18,41,63,.82);border:1px solid rgba(251,249,245,.16);font-size:16px;line-height:1.55;color:var(--texte)}
.rgpd p + p{margin-top:10px}
.accord{position:relative;display:flex;align-items:flex-start;gap:14px;margin-top:22px;min-height:48px;cursor:pointer;color:var(--papier);font-weight:600;touch-action:manipulation}
.accord input{position:absolute;opacity:0;width:28px;height:28px;margin:0;left:0;top:0}
.case{flex:none;width:30px;height:30px;border-radius:8px;border:2px solid var(--ligne);display:grid;place-items:center;transition:background-color .25s,border-color .25s,transform .25s var(--ease)}
.case svg{width:22px;height:22px;fill:none;stroke:var(--nuit);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:24;stroke-dashoffset:24;transition:stroke-dashoffset .4s var(--ease) .05s}
.accord input:checked + .case{background:var(--or);border-color:var(--or);animation:pop .45s var(--ease)}
.accord input:checked + .case svg{stroke-dashoffset:0}
.accord input:focus-visible + .case{outline:3px solid var(--papier);outline-offset:3px}
.accord.invalide .case{border-color:var(--err)}
.accord span:last-child{padding-top:3px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.err{margin:20px 0 0;color:var(--err);font-size:17px;font-weight:600;animation:monte .35s var(--ease) both}

/* Boutons */
.actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px 20px;margin-top:36px}
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:56px;padding:0 30px;border:0;border-radius:999px;
  background:var(--or);color:var(--nuit);font:700 18px/1 var(--sans);cursor:pointer;overflow:hidden;touch-action:manipulation;
  transition:transform .25s var(--ease),background-color .2s}
.btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .35s var(--ease)}
.btn:hover{background:#F57F3F}
.btn:hover svg{transform:translateX(4px)}
.btn:active{transform:scale(.97)}
.btn:focus-visible{outline:3px solid var(--papier);outline-offset:3px}
.btn[disabled]{opacity:.75;cursor:progress}
.btn.envoi::after{content:'';position:absolute;left:0;bottom:0;height:4px;width:40%;background:rgba(18,41,63,.45);animation:balaie 1.1s ease-in-out infinite}
.btn.grand{min-height:64px;padding:0 40px;font-size:20px}
.btn.halo::before{content:'';position:absolute;inset:0;pointer-events:none;background:linear-gradient(100deg,transparent 35%,rgba(255,255,255,.38) 50%,transparent 65%);transform:translateX(-130%);animation:brille 5.5s ease-in-out 2s infinite}
.btn.halo:hover::before,.btn.halo:focus-visible::before{animation:none;opacity:0}
.astuce{font-size:15px;color:var(--doux)}
@media (hover:none){.astuce.clavier{display:none}}

/* Fin */
.coche-boite{position:relative;width:84px;height:84px;margin-bottom:22px}
.coche-boite::before{content:'';position:absolute;inset:0;border-radius:50%;border:2px solid var(--or);opacity:0}
.coche{width:84px;height:84px;display:block;fill:none;stroke:var(--or);stroke-width:3.5;stroke-linecap:round;stroke-linejoin:round}
.coche circle{stroke-dasharray:214}
.coche path{stroke-dasharray:50}
.agenda-titre{margin:24px 0 10px;font-weight:600;color:var(--papier)}
.agenda{display:flex;flex-wrap:wrap;gap:10px}
.btn-agenda{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 20px;border:2px solid var(--ligne);border-radius:999px;color:var(--papier);font-weight:700;text-decoration:none;
  transition:background-color .25s,border-color .25s,transform .25s var(--ease)}
.btn-agenda:hover{border-color:var(--or-clair);background:rgba(251,249,245,.07)}
.btn-agenda:active{transform:scale(.97)}
.btn-agenda:focus-visible{outline:3px solid var(--papier);outline-offset:3px}
.sans-js{max-width:640px;margin:24px auto;padding:0 20px;color:var(--papier)}

/* Mouvement : changement d'étape, apparition en cascade */
.etape.sort-av{animation:sort-av .26s ease-in both}
.etape.sort-ar{animation:sort-ar .26s ease-in both}
.entre-av .cascade > *{animation:monte .75s var(--ease) both}
.entre-ar .cascade > *{animation:descend .75s var(--ease) both}
.cascade > :nth-child(1){animation-delay:.16s !important}
.cascade > :nth-child(2){animation-delay:.22s !important}
.cascade > :nth-child(3){animation-delay:.28s !important}
.cascade > :nth-child(4){animation-delay:.34s !important}
.cascade > :nth-child(5){animation-delay:.40s !important}
.cascade > :nth-child(6){animation-delay:.46s !important}
.cascade > :nth-child(7){animation-delay:.52s !important}
.cascade > :nth-child(8){animation-delay:.58s !important}
.entre-av .q .w,.entre-ar .q .w,.entre-av h1 .w{animation:mot .9s var(--ease) both;animation-delay:calc(var(--d,0) * 55ms + .2s)}
.entre-av h1 .w{animation-delay:.2s}
.entre-av h1 .m:nth-child(2) .w{animation-delay:.34s}
.entre-av h1 .ia{animation:mot .9s var(--ease) .34s both,lueur-ia 1.8s ease-out .9s both}
.entre-av .coche circle,.entre-ar .coche circle{animation:trace 1s var(--ease) .15s both}
.entre-av .coche path{animation:trace-coche .6s var(--ease) .75s both}
.entre-av .coche-boite::before{animation:onde 1.5s ease-out .7s both}
.secoue{animation:secousse .45s ease both}

@keyframes monte{from{opacity:0;transform:translate3d(0,26px,0)}to{opacity:1;transform:none}}
@keyframes descend{from{opacity:0;transform:translate3d(0,-26px,0)}to{opacity:1;transform:none}}
@keyframes mot{from{transform:translate3d(0,112%,0)}to{transform:none}}
@keyframes sort-av{to{opacity:0;transform:translate3d(0,-22px,0)}}
@keyframes sort-ar{to{opacity:0;transform:translate3d(0,22px,0)}}
@keyframes pop{0%{transform:scale(.6)}60%{transform:scale(1.14)}100%{transform:scale(1)}}
@keyframes brille{0%,62%{transform:translateX(-130%)}100%{transform:translateX(130%)}}
@keyframes apparait{to{opacity:1}}
@keyframes onde-pt{0%{opacity:.8;transform:scale(1)}100%{opacity:0;transform:scale(3.6)}}
@keyframes lueur-ia{0%{text-shadow:0 0 0 rgba(237,107,37,0)}35%{text-shadow:0 0 38px rgba(237,107,37,.65)}100%{text-shadow:0 0 0 rgba(237,107,37,0)}}
@keyframes trace{from{stroke-dashoffset:214}to{stroke-dashoffset:0}}
@keyframes trace-coche{from{stroke-dashoffset:50}to{stroke-dashoffset:0}}
@keyframes onde{0%{opacity:.7;transform:scale(1)}100%{opacity:0;transform:scale(2.3)}}
@keyframes secousse{10%,90%{transform:translateX(-2px)}20%,80%{transform:translateX(4px)}30%,50%,70%{transform:translateX(-7px)}40%,60%{transform:translateX(7px)}}
@keyframes balaie{0%{transform:translateX(-100%)}100%{transform:translateX(260%)}}

/* Petits écrans */
@media (max-width:640px){
  body{font-size:17px}
  .haut{padding:10px 16px 0}
  .logo{height:15px}
  .marque{margin-left:12px}
  .scene{padding:8px 20px 40px}
  .champs.deux{grid-template-columns:1fr}
  .champ input,.champ textarea{font-size:23px}
  .lead{font-size:17.5px}
  .infos div{grid-template-columns:1fr;gap:0}
  .infos dt{padding-top:0}
  .actions .btn{width:100%}
  .hero .actions{position:sticky;bottom:0;margin:20px -20px 0;padding:16px 20px calc(16px + env(safe-area-inset-bottom));background:linear-gradient(rgba(18,41,63,0),var(--nuit) 38%);justify-content:center;z-index:2}
  .hero .astuce{width:100%;text-align:center;margin-top:-4px}
  .agenda{flex-direction:column}
  .btn-agenda{width:100%}
}
@media (max-height:700px){
  .scene{align-items:start;padding-top:24px}
}

/* Mouvement réduit : pas d'animation, tout reste lisible */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-delay:0s !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;transition-delay:0s !important}
  .cascade > :nth-child(n){animation-delay:0s !important}
}
@media (forced-colors:active){
  .champ input,.champ textarea{border-bottom-color:CanvasText}
  .btn,.chip input:checked + span{border:2px solid ButtonText}
}