:root{
  --paper:#EDF0E6; --surface:#F8F9F4; --ink:#1F2A3D; --muted:#56606E;
  --sis:#7A4E8C; --bro:#3F6E5A; --link:#B9822A; --line:#C9CFC0;
  --sis-soft:rgba(122,78,140,.12); --bro-soft:rgba(63,110,90,.12);
  color-scheme: light;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#151A20; --surface:#1D242C; --ink:#E6EAE1; --muted:#A3ACB6;
    --sis:#C49AD6; --bro:#86C2A6; --link:#E0AE5C; --line:#323C46;
    --sis-soft:rgba(196,154,214,.14); --bro-soft:rgba(134,194,166,.14);
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --paper:#151A20; --surface:#1D242C; --ink:#E6EAE1; --muted:#A3ACB6;
  --sis:#C49AD6; --bro:#86C2A6; --link:#E0AE5C; --line:#323C46;
  --sis-soft:rgba(196,154,214,.14); --bro-soft:rgba(134,194,166,.14);
  color-scheme: dark;
}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;line-height:1.55}
main{max-width:980px;margin:0 auto;padding:28px 18px 64px}
h1,h2,h3{font-family:"Young Serif",Georgia,"Times New Roman",serif;font-weight:400;line-height:1.15;margin:0}
h1{font-size:clamp(2.1rem,7vw,3.4rem)}
h2{font-size:1.5rem;margin-bottom:6px}
p{margin:0 0 12px;max-width:68ch}
.muted{color:var(--muted)}

/* Hero : deux cercles qui se chevauchent */
.hero{display:grid;grid-template-columns:1fr;gap:18px;align-items:center;margin-bottom:34px}
@media(min-width:760px){.hero{grid-template-columns:1.1fr 1fr}}
.venn{width:100%;max-width:360px;justify-self:center}
.venn text{font-family:"Young Serif",Georgia,serif}
@media (prefers-reduced-motion:no-preference){
  .venn .c1{animation:in1 1.1s ease-out both}
  .venn .c2{animation:in2 1.1s ease-out both}
  @keyframes in1{from{transform:translateX(-40px);opacity:0}}
  @keyframes in2{from{transform:translateX(40px);opacity:0}}
}

/* Fiches */
.pair{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:760px){.pair{grid-template-columns:1fr 1fr}}
fieldset{border:0;margin:0;padding:18px;border-radius:14px;background:var(--surface)}
fieldset.side-a{border-top:5px solid var(--sis)}
fieldset.side-b{border-top:5px solid var(--bro)}
fieldset.lien{border-top:5px solid var(--link);margin-top:16px}
legend{font-family:"Young Serif",Georgia,serif;font-size:1.35rem;padding:0;float:left;width:100%;margin-bottom:10px}
.side-a legend{color:var(--sis)} .side-b legend{color:var(--bro)} .lien legend{color:var(--link)}
label{display:block;font-weight:700;font-size:.95rem;margin:10px 0 4px;clear:both}
.hint{font-weight:400;color:var(--muted);font-size:.85rem}
input[type=text],select,textarea{width:100%;font:inherit;font-size:16px;color:var(--ink);
  background:var(--paper);border:1.5px solid var(--line);border-radius:9px;padding:9px 11px}
textarea{min-height:64px;resize:vertical}
input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{
  outline:3px solid var(--link);outline-offset:2px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px;clear:both}
.grid2>*{min-width:0}
@media(max-width:480px){.grid2{grid-template-columns:1fr}}
.consent{display:flex;gap:10px;align-items:flex-start;margin-top:14px;padding:12px;border-radius:10px;background:var(--paper)}
.consent input{width:22px;height:22px;margin-top:2px;flex:none;accent-color:var(--link)}
.consent label{margin:0;font-weight:400}

.actions{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 30px}
button{font:inherit;font-weight:700;border-radius:999px;padding:11px 20px;cursor:pointer;border:2px solid var(--ink)}
.primary{background:var(--ink);color:var(--paper)}
.ghost{background:transparent;color:var(--ink)}

/* Résultats */
.tabs{display:flex;gap:6px;overflow-x:auto;border-bottom:2px solid var(--line);margin-bottom:16px}
.tab{border:0;border-radius:10px 10px 0 0;background:transparent;color:var(--muted);padding:10px 14px;white-space:nowrap}
.tab[aria-selected="true"]{background:var(--surface);color:var(--ink)}
.panel{display:none}
.panel.on{display:block}
.prompt{background:var(--surface);border-radius:12px;padding:14px 16px;margin-bottom:12px;border-left:4px solid var(--line)}
.prompt h3{font-size:1.1rem;margin-bottom:8px}
.prompt pre{white-space:pre-wrap;word-wrap:break-word;font-family:inherit;font-size:.95rem;margin:0 0 10px;color:var(--ink)}
.copy{padding:7px 14px;font-size:.9rem;background:transparent;color:var(--ink);border-width:1.5px}
.copy.done{background:var(--link);border-color:var(--link);color:#1A1A1A}
.prompt.k-a{border-left-color:var(--sis)} .prompt.k-b{border-left-color:var(--bro)} .prompt.k-lien{border-left-color:var(--link)}
.empty{padding:22px;border:2px dashed var(--line);border-radius:12px;color:var(--muted)}
.howto{margin-top:34px}
.howto ol{padding-left:22px;max-width:68ch}
.howto li{margin-bottom:8px}

/* Ajouts pour le site */
.site-link{margin:0 0 18px;font-size:.9rem}
.site-link a,.foot a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.kicker{margin:0 0 6px;color:var(--link);font-size:.85rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase}
.modes{display:flex;flex-wrap:wrap;gap:8px;clear:both;margin-bottom:6px}
.mode{position:relative;margin:0;font-weight:700}
.mode input{position:absolute;opacity:0;width:100%;height:100%;inset:0;margin:0;cursor:pointer}
.mode span{display:inline-block;padding:10px 20px;border:2px solid var(--ink);border-radius:999px}
.mode input:checked+span{background:var(--ink);color:var(--paper)}
.mode input:focus-visible+span{outline:3px solid var(--link);outline-offset:2px}
.fields{display:grid;grid-template-columns:1fr 1fr;gap:0 12px;clear:both}
.fields .full{grid-column:1/-1}
@media(max-width:480px){.fields{grid-template-columns:1fr}}
.foot{margin-top:40px;color:var(--muted);font-size:.85rem}
[hidden]{display:none!important}
.note{font-size:.9rem;color:var(--muted);margin:10px 0 0;max-width:68ch}