/* ============================================================
   CLAIRIA · design system (v0.1)
   Couleur signature : indigo / violet électrique
   Thème clair + sombre via variables CSS. Pas de #fff en dur.
   ============================================================ */
:root{
  --indigo:#3D4FD6; --indigo-d:#3340C8; --indigo-p:#2E3699;
  --lav:#ECEFFF; --lav-2:#E0E3FF; --cream:#FBFBFE; --ink:#0E1530;
  --bg:#FBFBFE; --surface:#FFFFFF; --text:#0E1530; --muted:#51607A;
  --line:#E6E8F2; --radius:22px;
  --header-bg:rgba(251,251,254,.96);
  --card-shadow:0 10px 30px -12px rgba(45,55,160,.18);
  --glass-btn:rgba(255,255,255,.55); --glass-brd:rgba(45,55,160,.18);
  --grad: linear-gradient(120deg,#3D4FD6,#6E7BF2 70%,#8FA0FF);
}
[data-theme="dark"]{
  --bg:#0B1020; --surface:#121A30; --text:#EAEEF8; --muted:#9FB0CC;
  --line:#22304E; --header-bg:rgba(11,16,32,.97);
  --card-shadow:0 0 0 1px rgba(61,79,214,.25), 0 14px 40px -16px rgba(61,79,214,.45);
  --glass-btn:rgba(18,26,48,.6); --glass-brd:rgba(61,79,214,.35);
}
/* mode sombre uniquement via le bouton ☾/☀ (pas de bascule auto selon l’OS) */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.65}
h1,h2,h3,.brand{font-family:"Baloo 2",Inter,sans-serif;line-height:1.2;color:var(--text)}
a{color:var(--indigo-d);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* Header */
header.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(10px);
  background:var(--header-bg);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:18px;height:64px}
.brand{font-weight:800;font-size:1.35rem;display:flex;align-items:center;gap:8px}
.brand .dot{width:14px;height:14px;border-radius:50%;background:var(--grad);
  box-shadow:0 0 16px 2px rgba(61,79,214,.6)}
.nav nav{margin-left:auto;display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.nav nav a{color:var(--text);font-weight:600;font-size:.95rem}
.theme-tgl{cursor:pointer;border:1px solid var(--line);background:var(--surface);
  border-radius:999px;width:38px;height:38px;font-size:1rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;
  font-weight:700;border:0;cursor:pointer;background:var(--grad);color:#fff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 10px 24px -10px rgba(61,79,214,.7)}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn.lg{padding:15px 30px;font-size:1.05rem}
.btn.ghost{background:var(--glass-btn);color:var(--text);border:1px solid var(--glass-brd);
  backdrop-filter:blur(8px);box-shadow:none}

/* Hero */
.hero{position:relative;padding:70px 0 40px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-40% 30% auto -10%;height:480px;
  background:radial-gradient(closest-side,rgba(61,79,214,.30),transparent);
  filter:blur(20px);animation:halofloat 14s ease-in-out infinite}
@keyframes halofloat{0%,100%{transform:translate(0,0)}50%{transform:translate(40px,30px)}}
.hero-center{text-align:center;max-width:760px;margin:0 auto}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);margin:.2em 0}
.lead{font-size:1.2rem;color:var(--muted)}

/* Cards / bento */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0}
.tile,.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--card-shadow);transition:transform .2s}
.tile:hover{transform:translateY(-4px)}
.tile h3{margin:.2em 0 .3em}
.tile .ic{font-size:1.6rem}
.quicklinks{margin:30px 0}
.ql-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.qlink{display:flex;justify-content:space-between;align-items:center;background:var(--surface);
  border:1px solid var(--line);border-radius:14px;padding:14px 18px;font-weight:600;color:var(--text)}
.qlink:hover{border-color:var(--indigo);text-decoration:none}

/* Article */
.article{padding:34px 0 10px}
.article h2{margin-top:1.6em;font-size:1.5rem}
.crumb{color:var(--muted);font-size:.85rem;margin-bottom:6px}
.updated{color:var(--muted);font-size:.85rem}
.enbref{background:var(--lav);border:1px solid var(--lav-2);border-radius:16px;padding:18px 22px;margin:18px 0}
[data-theme="dark"] .enbref{background:#16203a;border-color:#22304e}
.enbref ul,.enbref li{margin:0}
.faq{border-top:1px solid var(--line);margin-top:30px;padding-top:14px}
.faq details{padding:12px 0;border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:700}
.authorbox{display:flex;gap:12px;align-items:center;margin:26px 0;padding:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;font-size:.92rem}
.nextstep{background:var(--grad);color:#fff;border-radius:18px;padding:20px 24px;margin:28px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.nextstep a.btn{background:#fff;color:var(--indigo-p)}
.sources{font-size:.85rem;color:var(--muted);margin-top:20px}

/* Tool */
.tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--card-shadow);margin:24px 0}
.qcm-opt{display:block;width:100%;text-align:left;margin:8px 0;padding:14px 18px;border-radius:14px;
  border:1px solid var(--line);background:var(--bg);color:var(--text);font-weight:600;cursor:pointer}
.qcm-opt:hover{border-color:var(--indigo)}
.result{background:var(--ink);color:#EAEEF8;border-radius:16px;padding:22px;margin-top:16px}
.result a{color:#A5B4FF}

/* CTA band + footer */
.cta-band{background:var(--grad);color:#fff;border-radius:24px;padding:34px;margin:40px 0;text-align:center}
.cta-band .btn{background:#fff;color:var(--indigo-p)}
footer.site{background:var(--ink);color:#C7D0E6;margin-top:50px;padding:40px 0}
footer.site a{color:#C7D0E6}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
footer.site h4{color:#fff;margin:0 0 10px}
@media (max-width:820px){
  .bento{grid-template-columns:1fr}.ql-grid{grid-template-columns:1fr}.foot-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}