/* Feuille commune aux guides. Memes jetons que l'accueil (identite violette),
   mais reduite a ce dont une page de lecture a besoin. */
:root{
  color-scheme: light;
  --bg:#f6f6fb; --surface:#ffffff; --wash:#efecff;
  --text:#15161f; --text-2:#5b5d72; --line:#e8e8f2;
  --accent:#6d5ef8; --accent-deep:#5a4bd6; --accent-text:#5a4bd6;
  --panel:#15161f; --panel-2:#22232f; --on-panel:#ffffff; --on-panel-2:#a7a8bb;
  --display:"Bricolage Grotesque","Manrope",system-ui,sans-serif;
  --body:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme: dark;
    --bg:#0e0f16; --surface:#16171f; --wash:#1d1a33;
    --text:#f1f1f6; --text-2:#a2a3b4; --line:#272834;
    --accent:#6d5ef8; --accent-deep:#5a4bd6; --accent-text:#a293ff;
    --panel:#16171f; --panel-2:#22232f; --on-panel:#f1f1f6; --on-panel-2:#9a9bad;
  }
}
:root[data-theme="dark"]{
  color-scheme: dark;
  --bg:#0e0f16; --surface:#16171f; --wash:#1d1a33; --text:#f1f1f6; --text-2:#a2a3b4;
  --line:#272834; --accent:#6d5ef8; --accent-deep:#5a4bd6; --accent-text:#a293ff;
  --panel:#16171f; --panel-2:#22232f; --on-panel:#f1f1f6; --on-panel-2:#9a9bad;
}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
.wrap{width:100%;max-width:820px;margin-inline:auto;padding-inline:20px}
a{color:inherit}
h1,h2,h3{font-family:var(--display);font-weight:800;letter-spacing:-.03em;line-height:1.08;text-wrap:balance;margin:0}

/* en-tete */
.top{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.top .wrap{max-width:1140px}
.top-in{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:1.1rem;letter-spacing:-.03em;text-decoration:none;flex:none}
.brand img{border-radius:9px;display:block}
.top-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media (max-width:560px){.brand span{display:none}.top-actions .btn-sm{padding:9px 13px;font-size:.78rem}}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:13px 22px;
     font-family:var(--body);font-weight:700;font-size:.9rem;text-decoration:none;cursor:pointer;
     transition:transform .2s cubic-bezier(.2,.8,.3,1),background .2s,border-color .2s,color .2s,box-shadow .2s}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 26px -14px var(--accent)}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-text);transform:translateY(-2px)}
.btn-sm{padding:10px 16px;font-size:.84rem}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* article */
.article{padding-block:38px 64px}
.fil{font-size:.8rem;color:var(--text-2);margin-bottom:26px}
.fil a{text-decoration:none;color:var(--accent-text)}
.fil a:hover{text-decoration:underline}
h1{font-size:clamp(2rem,5vw,3.1rem)}
.chapo{font-size:1.1rem;color:var(--text-2);margin:22px 0 0;max-width:62ch}
.article h2{font-size:clamp(1.4rem,2.8vw,1.9rem);margin:48px 0 14px}
.article h3{font-size:1.12rem;margin:0 0 8px}
.article p{margin:0 0 16px;max-width:68ch}
.article em{font-style:italic}
.muted-note{font-size:.88rem;color:var(--text-2);background:var(--wash);border-radius:12px;padding:14px 16px}

.formule{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px;background:var(--panel);color:var(--on-panel);
         border-radius:18px;padding:24px 22px;margin:26px 0;text-align:center;font-family:var(--display);font-weight:600}
.formule b{color:var(--accent-text);font-size:1.4rem}
.formule span{font-size:1rem;display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:center}
.formule i{font-style:normal;color:var(--accent-text);font-weight:800}

/* calculateur */
.calc{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px;margin:22px 0 10px}
.calc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(224px,1fr));gap:16px}
.calc-field{margin:0;display:flex;flex-direction:column;gap:7px}
.calc-field label{font-size:.85rem;font-weight:600}
.calc-field label small{display:block;font-weight:400;color:var(--text-2);font-size:.78rem}
.unit{display:flex;align-items:center;gap:0;border:1px solid var(--line);border-radius:11px;background:var(--bg);overflow:hidden}
.unit input{flex:1;min-width:0;border:0;background:transparent;padding:11px 12px;font:600 1rem var(--body);color:var(--text);
            font-variant-numeric:tabular-nums}
.unit input:focus{outline:none}
.unit:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.unit i{font-style:normal;padding:0 13px;font-size:.84rem;font-weight:700;color:var(--text-2);border-left:1px solid var(--line);align-self:stretch;display:flex;align-items:center}

.calc-out{margin-top:22px;background:var(--panel);color:var(--on-panel);border-radius:16px;padding:22px;
          display:grid;grid-template-columns:auto 1fr;gap:20px 28px;align-items:center}
@media (max-width:620px){.calc-out{grid-template-columns:1fr;text-align:center}}
.out-main small{display:block;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--on-panel-2)}
.out-main b{font-family:var(--display);font-size:clamp(2.1rem,6vw,3rem);letter-spacing:-.04em;font-variant-numeric:tabular-nums;display:block;margin-top:4px}
.out-side{display:grid;grid-template-columns:repeat(auto-fit,minmax(122px,1fr));gap:14px}
.out-side small{display:block;font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--on-panel-2)}
.out-side b{font-family:var(--display);font-size:1.15rem;letter-spacing:-.02em;font-variant-numeric:tabular-nums;display:block;margin-top:3px}
.calc-detail{font-size:.84rem;color:var(--text-2);margin:14px 0 0;max-width:none}

/* blocs etapes et tableaux */
.etapes{display:grid;gap:12px;margin:24px 0}
.etape{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:14px;padding:18px 20px}
.etape b{font-family:var(--display);font-size:1.02rem;letter-spacing:-.02em;display:block;margin-bottom:6px}
.etape p{margin:0;color:var(--text-2);font-size:.92rem}
.tableau{overflow-x:auto;margin:22px 0;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.tableau table{width:100%;border-collapse:collapse;min-width:460px}
.tableau th{text-align:left;font-family:var(--display);font-size:.82rem;letter-spacing:.02em;padding:14px 16px;
            background:var(--wash);color:var(--accent-text);border-bottom:1px solid var(--line)}
.tableau td{padding:14px 16px;font-size:.92rem;color:var(--text-2);border-bottom:1px solid var(--line);vertical-align:top}
.tableau tr:last-child td{border-bottom:0}
.tableau td strong{color:var(--text)}
.article ul{margin:0 0 16px;padding-left:22px;max-width:68ch}
.article li{margin-bottom:8px;color:var(--text-2)}
.article li strong{color:var(--text)}

/* encart d'appel */
.cta-box{background:var(--panel);color:var(--on-panel);border-radius:22px;padding:30px;margin:44px 0;text-align:center}
.cta-box h3{font-size:1.35rem;margin-bottom:10px;color:var(--on-panel)}
.cta-box p{color:var(--on-panel-2);max-width:54ch;margin:0 auto 6px}
.cta-row{display:flex;gap:11px;justify-content:center;flex-wrap:wrap;margin-top:18px}
.cta-box .btn-ghost{border-color:var(--panel-2);color:var(--on-panel)}

/* faq */
.faq{display:grid;gap:11px;margin-top:8px}
details{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
details[open]{border-color:var(--accent)}
summary{cursor:pointer;padding:16px 46px 16px 18px;font-family:var(--display);font-weight:600;font-size:.98rem;list-style:none;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"";position:absolute;right:20px;top:50%;width:9px;height:9px;border-right:2px solid var(--accent);
               border-bottom:2px solid var(--accent);transform:translateY(-70%) rotate(45deg);transition:transform .24s}
details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
details p{padding:0 18px 16px;margin:0;color:var(--text-2);font-size:.92rem;max-width:66ch}

.disclaimer{font-size:.82rem;color:var(--text-2);border-top:1px solid var(--line);padding-top:18px;margin-top:40px}
.suite{display:flex;flex-direction:column;gap:8px;margin-top:34px;padding:22px;background:var(--wash);border-radius:16px}
.suite span{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;font-weight:800;color:var(--accent-text)}
.suite a{color:var(--text);font-weight:600;text-decoration:none;font-size:.95rem}
.suite a:hover{color:var(--accent-text)}

/* liste des guides */
.hub-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(272px,1fr));gap:16px;margin-top:34px}
.hub-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px;text-decoration:none;display:flex;
          flex-direction:column;transition:transform .22s cubic-bezier(.2,.8,.3,1),border-color .22s,box-shadow .22s}
.hub-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 22px 44px -30px var(--accent)}
.hub-card b{font-family:var(--display);font-size:1.08rem;letter-spacing:-.02em;margin-bottom:8px}
.hub-card p{color:var(--text-2);font-size:.9rem;margin:0;flex:1}
.hub-card span{margin-top:14px;font-size:.82rem;font-weight:700;color:var(--accent-text)}

/* pied */
footer{border-top:1px solid var(--line);padding-block:38px;font-size:.85rem;color:var(--text-2);text-align:center}
footer .wrap{max-width:1000px}
.flogo{display:flex;align-items:center;justify-content:center;gap:9px;font-family:var(--display);font-weight:800;font-size:1.02rem;
       color:var(--text);margin:0 0 18px}
.flogo img{border-radius:8px;display:block}
.flinks{margin:0 0 18px;line-height:2}
.flinks a{color:var(--text-2);text-decoration:none}
.flinks a:hover{color:var(--accent-text)}
.fbot{max-width:70ch;margin:0 auto;font-size:.78rem}
.made{margin-top:10px;font-size:.78rem}
.made a{color:var(--accent-text);font-weight:700;text-decoration:none}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
}