/* ============================================================
   LYRALIA · design system (v0.1)
   Couleur signature : corail + marine (DA Grand Air)
   Thème clair + sombre via variables CSS. Pas de #fff en dur.
   ============================================================ */
:root{
  --indigo:#215A8C; --indigo-d:#16324F; --indigo-p:#16324F; --accent:#FF6F5E;
  --lav:#FFECE8; --lav-2:#FFD8D1; --cream:#FFFDF7; --ink:#16324F;
  --bg:#FFFDF7; --surface:#FFFFFF; --text:#16324F; --muted:#5B6E82;
  --line:#E6E8F2; --radius:22px;
  --header-bg:rgba(255,253,247,.96);
  --card-shadow:0 10px 30px -12px rgba(22,50,79,.18);
  --glass-btn:rgba(255,255,255,.55); --glass-brd:rgba(22,50,79,.18);
  --grad: linear-gradient(120deg,#16324F,#274E77 60%,#3E6FA0);
}
[data-theme="dark"]{
  --bg:#0B1020; --surface:#121A30; --text:#EAEEF8; --muted:#9FB0CC;
  --line:#22304E; --header-bg:rgba(11,16,32,.97);
  /* variables oubliees : sans elles, les blocs signature restaient blancs sur fond noir */
  --lav:#161F3A; --lav-2:#243356; --cream:#0B1020;
  --indigo-d:#9DC4E8; --ink:#EAEEF8;
  --card-shadow:0 0 0 1px rgba(62,111,160,.25), 0 14px 40px -16px rgba(62,111,160,.45);
  --glass-btn:rgba(18,26,48,.6); --glass-brd:rgba(62,111,160,.35);
}
/* mode sombre uniquement via le bouton ☾/☀ (pas de bascule auto selon l’OS) */
*{box-sizing:border-box}
html,body{overflow-x:hidden;max-width:100%}
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:"Bricolage Grotesque",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(--accent);
  box-shadow:0 0 8px 1px rgba(62,111,160,.30)}
.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(62,111,160,.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(62,111,160,.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{margin-bottom:6px;line-height:0}
.ico{display:inline-flex;line-height:0;vertical-align:middle}
.ico svg{display:block}
.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}}

/* Header mobile : tout sur une ligne + menu burger */
.burger{display:none;margin-left:auto;cursor:pointer;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:10px;width:40px;height:40px;font-size:1.15rem;align-items:center;justify-content:center}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:18px}
@media (max-width:760px){
  header.nav .wrap{flex-wrap:nowrap}
  .nav nav{position:absolute;top:64px;left:0;right:0;margin-left:0;background:var(--header-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:4px 20px 12px;display:none}
  header.nav.open nav{display:flex}
  .nav nav a{padding:13px 0;border-top:1px solid var(--line)}
  .burger{display:flex}
}

/* Tool form controls (DA Lyralia) */
.tool label{font-weight:600;display:block;margin-bottom:4px}
.tool label b{color:var(--indigo-d)}
.tool input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:8px;border-radius:999px;background:var(--lav-2);outline:none;margin:10px 0 4px}
[data-theme="dark"] .tool input[type=range]{background:#2a3556}
.tool input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;background:var(--grad);cursor:pointer;box-shadow:0 2px 8px -2px rgba(62,111,160,.6)}
.tool input[type=range]::-moz-range-thumb{width:22px;height:22px;border:0;border-radius:50%;background:#4F5BD5;cursor:pointer}
.tool input[type=number],.tool select{font-family:inherit;font-size:1rem;font-weight:600;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.tool input[type=number]{width:120px}
.tool textarea{width:100%;font-family:inherit;font-size:1rem;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px;resize:vertical}
.tool select{max-width:100%}
.tool input[type=number]:focus,.tool select:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(62,111,160,.16)}
.tool table{border-radius:14px;overflow:hidden}
.tool table th{background:var(--lav);font-weight:700}
.tool table tr:nth-child(even) td{background:rgba(99,102,241,.045)}
[data-theme="dark"] .tool table th{background:#1a2440}
[data-theme="dark"] .tool table tr:nth-child(even) td{background:rgba(255,255,255,.03)}
.tool .qcm-opt{transition:border-color .15s, background .15s}

.mental{background:var(--lav);border-left:4px solid var(--indigo);border-radius:0 14px 14px 0;padding:14px 18px;margin:18px 0;font-size:1rem;line-height:1.55}
.mental .ic{font-size:1.15rem;margin-right:6px}

/* Lead magnet opt-in (guide offert) */
.ly-lead{display:grid;grid-template-columns:1.1fr 1fr;gap:26px;align-items:center;background:var(--lav);border:1px solid var(--line);border-radius:20px;padding:26px 28px;margin:32px 0}
.ly-lead h2{margin:.1em 0 .3em;font-size:1.4rem}
.ly-lead p{color:var(--muted);margin:0}
.ly-kick{display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--indigo-d);background:var(--surface);padding:4px 10px;border-radius:999px;margin-bottom:12px}
.ly-optin{display:flex;flex-direction:column;gap:10px;position:relative}
.ly-row2{display:flex;gap:10px}
.ly-optin input[type=text],.ly-optin input[type=email]{flex:1;width:100%;font-family:inherit;font-size:1rem;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;-webkit-text-fill-color:var(--text)}
.ly-optin input:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(62,111,160,.16)}
.ly-optin .btn{border:0;cursor:pointer;width:100%;text-align:center}
.ly-hp{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;border:0!important}
.ly-fine{font-size:.8rem;color:var(--muted);margin:2px 0 0}
.ly-ok{background:#e8f5ec;border:1px solid #bfe3c9;color:#14632b;border-radius:12px;padding:12px 14px;font-size:.92rem}
.ly-err{background:#fdeaea;border:1px solid #f3c0c0;color:#a12626;border-radius:12px;padding:12px 14px;font-size:.92rem}
[data-theme=dark] .ly-ok{background:#12341f;border-color:#1e5a34;color:#8ff0b0}
[data-theme=dark] .ly-err{background:#3a1620;border-color:#6a2436;color:#ffb3c0}
@media(max-width:760px){.ly-lead{grid-template-columns:1fr;padding:22px}}

/* Prompt à copier (articles "meilleur prompt pour...") */
.promptbox{position:relative;background:var(--lav);border:1px solid var(--line);border-left:4px solid var(--indigo);border-radius:14px;padding:16px 18px;margin:14px 0}
.promptbox pre{margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92rem;line-height:1.6;white-space:pre-wrap;word-wrap:break-word;color:var(--text)}
.promptcopy{position:absolute;top:10px;right:10px;font-size:.78rem;font-weight:700;border:1px solid var(--indigo);color:var(--indigo);background:var(--surface);border-radius:999px;padding:5px 12px;cursor:pointer;transition:background .2s,color .2s}
.promptcopy.copied{background:var(--indigo);color:#fff}
@media(max-width:560px){.promptcopy{position:static;display:inline-block;margin-bottom:10px}}

/* Insight engine : recherche + sondage */
#ly-search{width:100%;font-family:inherit;font-size:1rem;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text)}
#ly-search:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(62,111,160,.16)}
#ly-search-res{display:grid;gap:8px;margin-top:12px}
.ly-poll{background:var(--lav);border:1px solid var(--line);border-left:4px solid var(--indigo);border-radius:14px;padding:16px 18px;margin:26px 0}
.ly-poll>strong{display:block}
.ly-poll-opts{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.ly-poll-opts button{font-family:inherit;font-size:.9rem;font-weight:600;cursor:pointer;border:1px solid var(--indigo);color:var(--indigo);background:var(--surface);border-radius:999px;padding:8px 14px;transition:background .15s,color .15s}
.ly-poll-opts button:hover{background:var(--indigo);color:#fff}
.ly-poll-thanks{margin-top:12px;color:var(--indigo-d);font-weight:600}

.ly-b2b{display:flex;flex-direction:column;gap:10px;position:relative}
.ly-b2b input[type=text],.ly-b2b input[type=email],.ly-b2b textarea{width:100%;font-family:inherit;font-size:1rem;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;-webkit-text-fill-color:var(--text)}
.ly-b2b textarea{resize:vertical;min-height:70px}
.ly-b2b input:focus,.ly-b2b textarea:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(62,111,160,.16)}
.ly-b2b .btn{border:0;cursor:pointer;width:100%;text-align:center}
.mental .ic svg{color:var(--indigo);vertical-align:middle}
.theme-tgl svg{display:block;margin:auto}
[data-theme=dark] .mental .ic svg{color:#FFA588}
.hero-img{width:100%;height:auto;display:block;border-radius:18px;margin:20px 0 26px;box-shadow:0 18px 44px -26px rgba(20,24,60,.45)}
.home-hero-img{margin:30px auto 0;max-width:940px}
@media(max-width:760px){.hero-img{border-radius:14px;margin:16px 0 20px}}

/* Menu déroulant (toutes tailles d'écran) */
header.nav .wrap{flex-wrap:nowrap;align-items:center}
.burger{display:flex;margin-left:auto;cursor:pointer;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:11px;width:42px;height:42px;align-items:center;justify-content:center;padding:0}
.burger:hover{border-color:var(--indigo)}
.burger svg{display:block}
.theme-tgl{margin-left:10px;order:2}
.nav nav{position:absolute;top:100%;left:0;right:0;margin-left:0;background:var(--header-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 20px 44px -26px rgba(20,24,60,.45);flex-direction:column;align-items:stretch;gap:0;padding:6px 22px 14px;display:none}
header.nav.open nav{display:flex}
.nav nav a{padding:14px 2px;border-top:1px solid var(--line);font-weight:600;font-size:1rem}
.nav nav a:first-of-type{border-top:0}
@media(min-width:761px){.nav nav{padding:8px 28px 16px}}

/* Accessibilité : navigation au clavier visible et soignée */
:focus{outline:none}
:focus-visible{outline:2px solid var(--indigo);outline-offset:3px;border-radius:6px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--indigo);outline-offset:3px}
/* Confort de lecture */
.article p,.article li{max-width:72ch}
.article h2{scroll-margin-top:90px}
::selection{background:rgba(62,111,160,.18)}

/* Mode sombre : finitions */
[data-theme=dark] .promptbox,[data-theme=dark] .enbref,[data-theme=dark] .mental,[data-theme=dark] .ly-poll{border-color:#2B3A5E}
[data-theme=dark] .ly-lead{border-color:#2B3A5E}
[data-theme=dark] .hero-img{box-shadow:0 18px 44px -26px rgba(0,0,0,.7)}
[data-theme=dark] .tile,[data-theme=dark] .card{border-color:#22304E}
[data-theme=dark] .burger{background:var(--surface)}
[data-theme=dark] ::selection{background:rgba(143,160,255,.28)}
[data-theme=dark] .tool table th{background:#1B2646}
[data-theme=dark] img{filter:brightness(.94)}

/* Sommaire « Sur cette page » */
.toc{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 18px;margin:20px 0 24px}
.toc strong{display:block;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.toc ul{margin:0;padding:0;list-style:none;columns:2;column-gap:26px}
.toc li{margin:5px 0;break-inside:avoid}
.toc a{color:var(--text);font-size:.94rem;text-decoration:none;border-bottom:1px solid transparent}
.toc a:hover{border-bottom-color:var(--indigo);text-decoration:none}
@media(max-width:640px){.toc ul{columns:1}}
/* Lien d'évitement (accessibilité clavier) */
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--indigo);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;font-weight:600}
.skip:focus{left:0;text-decoration:none}

/* Corail : accents parcimonieux uniquement */
.tile .ic{color:var(--accent)}
.ly-kick{color:var(--accent)}

.brand-badge{flex:0 0 auto;margin-right:4px}
.brand-badge rect{fill:currentColor}
.brand-badge path{stroke:var(--bg)}