/* Nella — site web (connexion, inscription, application).
   Jetons et composants repris de docs/maquette.html ; les tailles d'écran
   se gèrent par media queries sur la fenêtre :
   large (> 1060 px)  barre latérale + conversation + aperçu
   moyen (761-1060)   l'aperçu passe par-dessus la conversation
   étroit (<= 760)    tiroir latéral, aperçu plein écran (comme l'app Flutter) */

:root{
  --bg:#F5F6FA; --surface:#FFFFFF; --surface-2:#EEF0F6; --ink:#0B0D1A; --muted:#5A6078; --line:#E1E4EE;
  --accent:#3D4BFF; --accent-ink:#2B37D9; --accent-soft:#E9EBFF; --on-accent:#FFFFFF; --spark:#FF6A3D;
  --ok:#16865A; --danger:#D23F2A; --danger-soft:#FCE9E6; --shadow:rgba(11,13,26,.16); --scrim:rgba(8,10,20,.42);
  --canvas:#FFFFFF;
  --font-display:"Source Serif 4",Georgia,"Times New Roman",serif;
  --font-reading:"Source Serif 4",Georgia,"Times New Roman",serif;
  --font-body:"Geist",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-ui:"Geist",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --font-mono:"Geist Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#07080F; --surface:#0F111C; --surface-2:#161927; --ink:#EEF0FA; --muted:#9AA0BA; --line:#232739;
    --accent:#5B67FF; --accent-ink:#A8AEFF; --accent-soft:#1A1D42; --on-accent:#FFFFFF; --spark:#FF8460;
    --ok:#4CC38A; --danger:#F07A63; --danger-soft:#3A1C18; --shadow:rgba(0,0,0,.55); --scrim:rgba(0,0,0,.6);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#07080F; --surface:#0F111C; --surface-2:#161927; --ink:#EEF0FA; --muted:#9AA0BA; --line:#232739;
  --accent:#5B67FF; --accent-ink:#A8AEFF; --accent-soft:#1A1D42; --on-accent:#FFFFFF; --spark:#FF8460;
  --ok:#4CC38A; --danger:#F07A63; --danger-soft:#3A1C18; --shadow:rgba(0,0,0,.55); --scrim:rgba(0,0,0,.6);
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 var(--font-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{cursor:default}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3,h4,p{margin:0}
[hidden]{display:none!important}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;inset-inline-start:12px;top:-60px;z-index:200;background:var(--ink);color:var(--surface);padding:9px 14px;border-radius:10px;font-weight:600;text-decoration:none}
.skip:focus{top:12px}

.mark{width:28px;height:28px;flex:none;display:block}
/* Marques d'acceptation des moyens de paiement (billing/partials/marks) : 24 px de haut, sans déformation. */
.pm-marks{display:inline-flex;flex-wrap:wrap;align-items:center;gap:6px}
.pm-mark{height:24px;width:auto;display:block;flex:none}
.mark-tile{fill:var(--accent)}
.mark-n{fill:none;stroke:var(--on-accent);stroke-width:3.4;stroke-linecap:round}
.mark-spark{fill:var(--spark)}
.wordmark{font:600 23px/1 var(--font-ui,var(--font-body));letter-spacing:-.03em}

.icon-btn{width:36px;height:36px;display:inline-grid;place-items:center;border:0;background:none;border-radius:10px;color:var(--ink);flex:none;padding:0}
.icon-btn:hover{background:var(--surface-2)}

/* ============================== connexion / inscription ============================== */
.auth-body{min-height:100vh;min-height:100dvh}
.auth{display:grid;grid-template-columns:minmax(0,1fr);min-height:100vh;min-height:100dvh}
.auth-pitch{display:none}
.auth-main{display:grid;place-items:center;padding:40px 16px}
.auth-card{width:100%;max-width:410px;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:30px 28px 26px;box-shadow:0 30px 70px -44px var(--shadow)}
.auth-brand{display:flex;align-items:center;gap:10px;margin-bottom:26px;width:fit-content;color:inherit;text-decoration:none;border-radius:8px}
.auth-card h1{font:600 27px/1.15 var(--font-display);letter-spacing:-.02em}
.auth-sub{color:var(--muted);margin-top:6px}
.auth-flash{margin-top:16px;padding:10px 13px;border-radius:12px;background:var(--accent-soft);color:var(--ink);font-size:14px}
.auth-form{display:grid;gap:16px;margin-top:22px}
.field{display:grid;gap:6px}
.field label{font-weight:600;font-size:14px}
.field input{width:100%;min-width:0;border:1px solid var(--line);background:var(--surface-2);border-radius:12px;padding:11px 14px;font-size:16px;line-height:1.3;transition:border-color .15s,box-shadow .15s}
.field input:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}
.field input:focus{outline:none;border-color:var(--accent);background:var(--surface);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 28%,transparent)}
.field input[aria-invalid="true"]{border-color:var(--danger)}
.field-hint{font-size:12.5px;color:var(--muted)}
.field-err{font-size:13px;color:var(--danger);font-weight:500}
.check{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted);cursor:pointer;width:fit-content}
.check input{width:17px;height:17px;margin:0;accent-color:var(--accent)}
.btn-primary{margin-top:4px;width:100%;border:0;background:var(--accent);color:var(--on-accent);font-weight:700;font-size:15px;padding:12px 16px;border-radius:12px}
.btn-primary:hover{filter:brightness(1.05)}
.auth-alt{margin-top:20px;text-align:center;font-size:14px;color:var(--muted)}
.auth-alt a{color:var(--accent-ink);font-weight:600}

@media (min-width:900px){
  .auth{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr)}
  .auth-pitch{display:flex;flex-direction:column;gap:28px;padding:36px 48px;background:var(--surface-2);border-right:1px solid var(--line);position:relative;overflow:hidden}
  .auth-pitch::before{content:"";position:absolute;width:620px;height:620px;right:-260px;top:-240px;border-radius:50%;background:radial-gradient(closest-side,color-mix(in srgb,var(--accent) 26%,transparent),transparent);pointer-events:none}
  .auth-main .auth-brand{display:none}
}
.auth-pitch-brand{display:flex;align-items:center;gap:10px;position:relative;width:fit-content;color:inherit;text-decoration:none;border-radius:8px}
.auth-pitch-body{margin:auto 0;display:grid;gap:16px;max-width:500px;position:relative}
.auth-pitch-body h2{font:600 clamp(30px,3.2vw,42px)/1.08 var(--font-display);letter-spacing:-.025em;text-wrap:balance}
.auth-pitch-body>p{color:var(--muted);font-size:16px;max-width:46ch}
.auth-demo{display:grid;gap:14px;margin-top:14px;padding:18px;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:0 24px 60px -40px var(--shadow)}
.auth-demo .bubble{justify-self:end;max-width:85%}
.auth-demo-answer{display:grid;gap:9px;justify-items:start;font-size:14.5px}
.auth-pitch-foot{font-size:13px;color:var(--muted);position:relative}

/* ============================== application ============================== */
/* Lecture calme : colonne centrée d'environ 720 px, réponses en Source Serif 4,
   interface en Geist, compositeur flottant. Propriétés logiques pour l'arabe (rtl). */
.app-body{height:100vh;height:100dvh;overflow:hidden;background:var(--bg)}
.app-root{display:contents}
.app-root[dir="rtl"]{
  --font-ui:"Geist","IBM Plex Sans Arabic",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"Geist","IBM Plex Sans Arabic",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-reading:"Source Serif 4","Noto Naskh Arabic",Georgia,serif;
  --font-display:"Source Serif 4","Noto Naskh Arabic",Georgia,serif;
}
.app{
  --col:720px; --side-w:268px;
  --side-bg:color-mix(in srgb,var(--surface-2) 55%,var(--bg));
  --hover:color-mix(in srgb,var(--ink) 6%,transparent);
  position:relative;height:100vh;height:100dvh;display:grid;grid-template-columns:var(--side-w) minmax(0,1fr);grid-template-rows:minmax(0,1fr);overflow:hidden;background:var(--bg);font-family:var(--font-ui)
}
.app.has-preview{grid-template-columns:var(--side-w) minmax(0,1fr) minmax(0,1.1fr)}
.scrim{display:none}

/* boutons de l'application */
.ui-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:8px 14px;border-radius:11px;border:1px solid transparent;font:600 14px/1.2 var(--font-ui);text-decoration:none;white-space:nowrap;transition:background-color .15s,border-color .15s,filter .15s}
.ui-btn-accent{background:var(--accent);color:var(--on-accent)}
.ui-btn-accent:hover{filter:brightness(1.08)}
.ui-btn-line{background:var(--surface);border-color:var(--line);color:var(--ink)}
.ui-btn-line:hover{background:var(--surface-2)}
.ui-btn-sm{min-height:34px;padding:6px 12px;font-size:13.5px;border-radius:10px}
.ui-btn-danger{background:var(--danger);color:var(--surface)}
.ui-btn-danger:hover:not(:disabled){filter:brightness(1.07)}
.ui-btn-danger-line{background:var(--surface);border-color:color-mix(in srgb,var(--danger) 45%,var(--line));color:var(--danger)}
.ui-btn-danger-line:hover:not(:disabled){background:var(--danger-soft)}
.ui-btn:disabled{opacity:.55;cursor:default}

/* barre latérale */
.side{display:flex;flex-direction:column;gap:4px;padding:10px 10px 8px;min-height:0;min-width:0;background:var(--side-bg);border-inline-end:1px solid var(--line)}
.side-top{display:flex;align-items:center;gap:8px;min-height:44px;padding-inline:8px 2px}
.side-brand{display:flex;align-items:center;gap:9px;flex:1;min-width:0}
.side-brand .mark{width:26px;height:26px}
.side-brand .wordmark{font-size:20px}
.new-btn{display:flex;align-items:center;gap:10px;width:100%;min-height:40px;margin-block:6px 10px;border:0;background:none;border-radius:11px;padding:6px 8px;font:500 14px/1.2 var(--font-ui);text-align:start;color:var(--ink);transition:background-color .15s}
.new-btn:hover{background:var(--hover)}
.new-ico{width:26px;height:26px;border-radius:50%;background:var(--accent);color:var(--on-accent);display:grid;place-items:center;flex:none;transition:transform .2s}
.new-btn:hover .new-ico{transform:scale(1.06)}
.threads{display:flex;flex-direction:column;flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;margin-inline:-4px;padding:0 4px 10px;scrollbar-width:thin;scrollbar-color:color-mix(in srgb,var(--ink) 18%,transparent) transparent}
.thread-group{display:flex;flex-direction:column;gap:1px}
.thread-group+.thread-group{margin-top:14px}
.side-h{font:500 12px/1 var(--font-ui);color:var(--muted);padding:6px 10px 8px;margin:0}
.side-note{color:var(--muted);font-size:13.5px;padding:8px 10px}
.link-btn{border:0;background:none;padding:2px 10px;color:var(--accent-ink);font-weight:600;font-size:13.5px;text-align:start;text-decoration:underline;text-underline-offset:2px}
.thread{display:flex;align-items:center;border-radius:10px;min-width:0;transition:background-color .12s}
.thread:hover{background:var(--hover)}
.thread.is-current{background:var(--accent-soft)}
.thread-open{flex:1;display:flex;align-items:center;text-align:start;border:0;background:none;padding-block:8px;padding-inline:10px 4px;border-radius:10px;font-size:14px;line-height:1.3;color:var(--ink);min-width:0}
.thread.is-current .thread-open{font-weight:500}
.thread-open span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.thread-open:focus-visible,.thread-act:focus-visible{outline-offset:-2px}
.thread-act{width:28px;height:28px;display:inline-grid;place-items:center;border:0;background:none;border-radius:8px;color:var(--muted);flex:none;padding:0;opacity:0;transition:opacity .12s}
.thread-act:last-child{margin-inline-end:4px}
.thread-act:hover{color:var(--ink);background:var(--hover)}
.thread-act.danger:hover{color:var(--danger)}
.thread:hover .thread-act,.thread:focus-within .thread-act,.thread.is-current .thread-act{opacity:1}
@media (hover:none){.thread-act{opacity:1}}
.thread-act[aria-expanded="true"]{opacity:1;color:var(--ink);background:var(--hover)}
.hit-open{flex-direction:column;align-items:stretch;gap:3px}
.thread-open .hit-title{font-size:14px}
.thread-open .hit-snip{font-size:12.5px;line-height:1.4;color:var(--muted);white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.threads mark{background:color-mix(in srgb,var(--accent) 22%,transparent);color:inherit;border-radius:3px;padding:0 1px}
.side-search{position:relative;display:flex;align-items:center;margin:-4px 0 10px}
.side-search input{width:100%;min-width:0;height:36px;border:1px solid transparent;background:color-mix(in srgb,var(--ink) 5%,transparent);border-radius:10px;padding-block:0;padding-inline:34px 52px;font:14px/1 var(--font-ui);color:var(--ink);transition:border-color .15s,background-color .15s,box-shadow .15s}
.side-search input::placeholder{color:var(--muted)}
.side-search input:hover{background:color-mix(in srgb,var(--ink) 7%,transparent)}
.side-search input:focus{outline:none;background:var(--surface);border-color:color-mix(in srgb,var(--accent) 55%,var(--line));box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 16%,transparent)}
.side-search-ico{position:absolute;inset-inline-start:11px;display:grid;color:var(--muted);pointer-events:none}
.side-search-kbd{position:absolute;inset-inline-end:8px;font:500 11px/1 var(--font-mono);color:var(--muted);border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:3px 5px;pointer-events:none}
.side-search input:focus~.side-search-kbd,.side-search input:not(:placeholder-shown)~.side-search-kbd{display:none}
@media (hover:none){.side-search-kbd{display:none}}
.rename{flex:1;min-width:0;margin:2px;border:1px solid var(--accent);background:var(--surface);border-radius:9px;padding:6px 9px;font-size:14px}
.rename:focus{outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 24%,transparent)}

/* compte, invité, jauges et paramètres */
.side-foot{position:relative;flex:none;display:grid;gap:10px;padding-top:10px;border-top:1px solid var(--line)}
.usage{display:grid;gap:10px;padding:2px 8px}
.gauge-item{display:grid;gap:5px}
.gauge-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-size:12.5px;font-weight:500}
.gauge-head b{font:500 11.5px var(--font-mono);color:var(--muted);font-variant-numeric:tabular-nums}
.gauge{height:4px;border-radius:999px;background:color-mix(in srgb,var(--ink) 9%,transparent);overflow:hidden}
.gauge i{display:block;height:100%;width:0;border-radius:inherit;background:var(--accent);transition:width .5s cubic-bezier(.2,.8,.2,1)}
.gauge.is-high i{background:var(--spark)}
.gauge.is-full i{background:var(--danger)}
.gauge-item small{font-size:11.5px;color:var(--muted);line-height:1.3;min-height:1.3em}
.app:not(.is-guest) .guest-only{display:none!important}
.guest-box{display:grid;gap:12px;padding:16px 14px 14px;border:1px solid color-mix(in srgb,var(--accent) 26%,var(--line));border-radius:18px;background:color-mix(in srgb,var(--accent-soft) 62%,var(--surface));box-shadow:0 18px 40px -34px var(--shadow)}
.guest-k{display:flex;align-items:center;gap:9px;font:600 16px/1.25 var(--font-display);letter-spacing:-.01em}
.guest-ava{width:28px;height:28px;border-radius:50%;background:var(--accent-soft);color:var(--accent-ink);display:grid;place-items:center;flex:none}
.guest-box .guest-ava{background:var(--surface)}
.guest-perks{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.guest-perks li{display:flex;align-items:flex-start;gap:8px;font-size:12.5px;line-height:1.4;color:var(--ink)}
.guest-perks svg{flex:none;margin-top:1px;color:var(--accent-ink)}
.app.is-guest .usage{display:none}
.guest-txt{font-size:12.5px;line-height:1.5;color:var(--muted)}
.guest-acts{display:grid;gap:6px;margin-top:2px}
/* bloc profil : un clic ouvre le menu du compte */
.me-pick{position:relative;min-width:0}
.me-btn{display:flex;align-items:center;gap:10px;width:100%;min-height:50px;padding:7px 8px;border:0;background:none;border-radius:12px;text-align:start;color:var(--ink);font-family:var(--font-ui);transition:background-color .15s}
.me-btn:hover,.me-btn[aria-expanded="true"]{background:var(--hover)}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--accent-soft);color:var(--accent-ink);display:grid;place-items:center;font-weight:600;font-size:13px;flex:none}
.avatar.is-guest{background:color-mix(in srgb,var(--ink) 7%,transparent);color:var(--muted)}
.me-txt{display:grid;line-height:1.25;font-size:13.5px;min-width:0;flex:1}
.me-txt b{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.me-txt span{color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.me-chev{display:grid;color:var(--muted);flex:none}

/* menus déroulants (modèle, paramètres) */
.pop-menu{position:absolute;z-index:40;display:grid;gap:2px;padding:6px;border:1px solid var(--line);border-radius:16px;background:var(--surface);color:var(--ink);box-shadow:0 24px 60px -24px var(--shadow);animation:pop .14s ease-out}
@keyframes pop{from{opacity:0;transform:translateY(4px) scale(.985)}to{opacity:1;transform:none}}
.pop-h{font:500 12px/1 var(--font-ui);color:var(--muted);padding:8px 10px 6px}
.pop-opt{display:flex;align-items:center;gap:12px;width:100%;text-align:start;border:0;background:none;border-radius:10px;padding:9px 10px;color:var(--ink);font-family:var(--font-ui)}
.pop-opt:hover:not([aria-disabled="true"]){background:var(--hover)}
.pop-opt:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.pop-opt[aria-disabled="true"]{cursor:default}
.pop-opt[aria-disabled="true"] .pop-opt-txt{opacity:.55}
.pop-opt-txt{flex:1;min-width:0;display:grid;gap:2px}
.pop-opt-txt b{font-size:14px;font-weight:500}
.pop-opt-txt span{font-size:12.5px;color:var(--muted);line-height:1.35}
.pop-check{display:grid;color:var(--accent);visibility:hidden;flex:none}
.pop-opt[aria-checked="true"] .pop-check{visibility:visible}
.me-menu{inset-inline:0;bottom:calc(100% + 6px);min-width:236px}
.me-head{display:grid;gap:2px;padding:10px 10px 8px;min-width:0}
.me-head b{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.me-head span{font-size:12.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.me-head .plan-pill{justify-self:start;margin-top:7px;font:600 11.5px/1 var(--font-ui);color:var(--accent-ink);background:var(--accent-soft);border-radius:999px;padding:4px 9px}
.pop-sep{height:1px;background:var(--line);margin:4px 6px}
a.pop-opt{text-decoration:none}
.pop-ico{display:grid;place-items:center;width:20px;flex:none;color:var(--muted)}
.pop-opt.is-accent,.pop-opt.is-accent .pop-ico{color:var(--accent-ink)}
.pop-opt.is-danger,.pop-opt.is-danger .pop-ico{color:var(--danger)}
.pop-opt[aria-expanded="true"]{background:var(--hover)}
.pop-aside{flex:none;font-size:12.5px;color:var(--muted)}
.pop-next{display:grid;flex:none;color:var(--muted)}
[dir="rtl"] .pop-next svg,[dir="rtl"] .pop-back svg{transform:scaleX(-1)}
.pop-back{display:none}
.lang-menu{bottom:calc(100% + 6px);inset-inline-start:calc(100% + 14px);width:220px}
.thread-menu{position:fixed;z-index:70;width:228px}
.tier-menu{inset-inline-end:-6px;bottom:calc(100% + 12px);width:min(330px,calc(100vw - 40px))}
.tier-lock{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;font-weight:600;color:var(--accent-ink);background:var(--accent-soft);border-radius:999px;padding:3px 8px;white-space:nowrap;flex:none}

/* conversation */
.chat{position:relative;display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg)}
.chat-top{position:relative;z-index:2;display:flex;align-items:center;gap:8px;height:56px;padding-inline:22px 14px;flex:none;border-bottom:1px solid transparent;transition:border-color .2s}
.chat-top.is-scrolled{border-bottom-color:var(--line)}
.chat-title{flex:1;min-width:0;font:500 15px/1.2 var(--font-ui);letter-spacing:-.005em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-title.is-new{color:var(--muted)}
.top-acts{display:flex;align-items:center;gap:8px;flex:none}
.star-btn{color:var(--muted)}
.star-btn:hover{color:var(--ink)}
.star-btn.is-on{color:var(--accent)}
.lbl-short{display:none}
.only-narrow{display:none}
.msgs{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;scrollbar-gutter:stable both-edges}
.col{max-width:calc(var(--col) + 56px);margin:0 auto;padding:24px 28px 40px;display:flex;flex-direction:column;gap:34px}
.msg{min-width:0}
.msg.user{align-self:flex-end;max-width:min(85%,600px);display:grid;justify-items:end}
.bubble{background:var(--accent-soft);color:var(--ink);border-radius:20px;border-end-end-radius:6px;padding:10px 16px;font:15px/1.6 var(--font-ui);white-space:pre-wrap;overflow-wrap:anywhere;min-width:0}
.msg.nella{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;min-width:0;justify-items:start}
.who{display:flex;align-items:center;gap:8px;font:600 14.5px/1 var(--font-ui)}
.who .mark{width:22px;height:22px}
/* réponses de Nella : une lecture */
.md{min-width:0;max-width:100%;overflow-wrap:anywhere;font:400 16.5px/1.72 var(--font-reading);color:var(--ink);text-wrap:pretty}
.md p{margin:0 0 .9em}
.md>:last-child{margin-bottom:0}
.md ul,.md ol{margin:0 0 .9em;padding-inline-start:1.4em}
.md li{margin:.35em 0;padding-inline-start:.2em}
.md li::marker{color:var(--muted)}
.md h4{font:600 18px/1.35 var(--font-reading);letter-spacing:-.01em;margin:1.4em 0 .5em}
.md>h4:first-child{margin-top:0}
.md code{font:500 .8em/1.4 var(--font-mono);background:var(--surface-2);border:1px solid var(--line);padding:.12em .4em;border-radius:6px}
.md pre{overflow-x:auto;max-width:100%;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:0 0 .9em;text-align:left}
.md pre code{background:none;border:0;padding:0;font:400 13px/1.6 var(--font-mono);overflow-wrap:normal;white-space:pre}
.md a{color:var(--accent-ink);text-decoration-thickness:1px;text-underline-offset:3px}
.md strong{font-weight:600}
.md-table{overflow-x:auto;max-width:100%;margin:0 0 .9em;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.md table{border-collapse:collapse;min-width:100%;font:14px/1.5 var(--font-ui)}
.md th,.md td{padding:9px 14px;text-align:start;vertical-align:top;border-bottom:1px solid var(--line);overflow-wrap:normal}
.md th{font-weight:600;background:var(--surface-2);white-space:nowrap}
.md tbody tr:last-child td{border-bottom:0}
/* Nella réfléchit, puis écrit : l'étincelle du logo s'anime */
.thinking{display:flex;gap:10px;align-items:center;min-height:26px;font:14px/1 var(--font-ui);color:var(--muted)}
.thinking .mark,.live-mark .mark{width:22px;height:22px}
.thinking span{background:linear-gradient(90deg,var(--muted) 35%,var(--ink) 50%,var(--muted) 65%);background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shimmer 2.4s linear infinite}
@keyframes shimmer{from{background-position:100% 0}to{background-position:0 0}}
.live-mark{display:flex;height:22px}
.msg.is-live .mark-spark,.loading .mark-spark{animation:spark 1.4s ease-in-out infinite;transform-box:fill-box;transform-origin:center}
@keyframes spark{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.6)}}
.note{display:inline-flex;gap:8px;align-items:flex-start;max-width:100%;font:13.5px/1.45 var(--font-ui);color:var(--muted);padding:8px 12px;border-radius:12px;background:var(--surface-2)}
.note svg{flex:none;margin-top:1px}
.note.err{background:var(--danger-soft);color:var(--ink)}
.note.err svg{color:var(--danger)}
/* actions sous une réponse terminée */
.msg-acts{display:flex;align-items:center;gap:4px;margin-top:-6px;margin-inline-start:-9px;opacity:0;transition:opacity .15s}
.msg.nella:hover .msg-acts,.msg.user:hover .msg-acts,.msg-acts:focus-within,.msg.nella:last-child .msg-acts,.msg-acts.has-retry{opacity:1}
.msg.user .msg-acts{margin:4px 0 0;margin-inline-end:-6px;justify-content:flex-end}
@media (hover:none){.msg-acts{opacity:1}}
.msg-act{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;padding:0;border:0;background:none;border-radius:8px;color:var(--muted);font:500 12.5px/1 var(--font-ui)}
.msg-act[aria-pressed="true"]{color:var(--accent-ink);background:var(--accent-soft)}
.msg-act:hover{color:var(--ink);background:var(--hover)}
.msg-act.is-done{color:var(--ok)}
.retry{display:inline-flex;align-items:center;gap:6px;height:32px;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:0 12px;font:600 13px/1 var(--font-ui);color:var(--ink)}
.retry:hover{background:var(--surface-2)}
.msg-acts .retry{margin-inline-start:9px;margin-inline-end:4px}
/* modifier un message, commentaire d'un « je n'aime pas » */
.msg.user.is-editing{width:100%;max-width:100%;justify-items:stretch}
.edit-box{display:grid;gap:10px;width:100%;border:1px solid color-mix(in srgb,var(--accent) 50%,var(--line));background:var(--surface);border-radius:18px;padding:12px 14px 10px;box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 10%,transparent)}
.edit-input{width:100%;min-height:48px;border:0;background:none;resize:none;outline:none;padding:2px;font:15px/1.6 var(--font-ui);color:var(--ink)}
.edit-bar{display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.edit-hint{flex:1;min-width:0;font-size:12.5px;color:var(--muted)}
.fb-form{display:grid;gap:8px;width:100%;max-width:520px;margin-top:-4px;border:1px solid var(--line);background:var(--surface);border-radius:16px;padding:12px 14px;animation:pop .14s ease-out}
.fb-form label{font:500 13.5px/1.3 var(--font-ui)}
.fb-form textarea{width:100%;min-height:60px;resize:vertical;border:1px solid var(--line);background:var(--surface-2);border-radius:10px;padding:8px 10px;font:14px/1.5 var(--font-ui);color:var(--ink)}
.fb-form textarea:focus{outline:none;border-color:var(--accent);background:var(--surface);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.fb-bar{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px}
.loading{display:grid;place-items:center;min-height:100%;padding:28px 20px}
.load-err{display:grid;justify-items:center;gap:12px;text-align:center;color:var(--muted);padding:48px 20px}

/* carte de création */
.art{position:relative;display:flex;align-items:center;gap:14px;width:100%;max-width:460px;text-align:start;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:16px;padding:12px;padding-inline-end:14px;font-family:var(--font-ui);transition:border-color .15s,box-shadow .15s;min-width:0;overflow:hidden}
button.art:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--line));box-shadow:0 16px 36px -28px var(--shadow)}
.art.is-open{border-color:color-mix(in srgb,var(--accent) 70%,var(--line));box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 14%,transparent)}
.art-ico{width:46px;height:46px;border-radius:12px;background:var(--accent-soft);color:var(--accent-ink);display:grid;place-items:center;flex:none}
.art.building .art-ico{animation:pulse 1.4s infinite ease-in-out}
.art.building::after{content:"";position:absolute;inset-inline-start:0;bottom:0;width:40%;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent);animation:sweep 1.3s linear infinite}
[dir="rtl"] .art.building::after{animation-name:sweep-rtl}
@keyframes sweep{from{transform:translateX(-100%)}to{transform:translateX(250%)}}
@keyframes sweep-rtl{from{transform:translateX(100%)}to{transform:translateX(-250%)}}
@keyframes pulse{50%{opacity:.45}}
.art-txt{flex:1;min-width:0;display:grid;gap:2px}
.art-txt b{font-size:14.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.art-txt span{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.art-go{flex:none;padding:6px 11px;border-radius:9px;background:var(--accent-soft);color:var(--accent-ink);font-size:13px;font-weight:600}
.art-go:empty{display:none}

/* état vide : salutation en Source Serif 4, exemples sous le compositeur */
.empty{display:flex;flex-direction:column;min-height:100%;padding:32px 24px 8px}
.empty-in{display:grid;justify-items:center;gap:10px;width:100%;max-width:var(--col);margin:auto auto 0;text-align:center}
.empty-mark{margin-bottom:8px}
.empty-mark .mark{width:40px;height:40px}
.empty h2{font:400 clamp(28px,2vw + 16px,40px)/1.15 var(--font-display);letter-spacing:-.02em;text-wrap:balance;color:var(--ink)}
.empty-sub{color:var(--muted);font-size:15px;max-width:52ch;text-wrap:pretty}

/* compositeur flottant */
.composer-wrap{position:relative;flex:none;display:flex;flex-direction:column;padding:0 28px 14px}
.composer-wrap::before{content:"";position:absolute;inset-inline:0;bottom:100%;height:28px;background:linear-gradient(to bottom,transparent,var(--bg));pointer-events:none}
.composer-wrap>*{width:100%;max-width:var(--col);margin-inline:auto}
.banner{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;grid-template-areas:"ico text act x";align-items:center;column-gap:12px;row-gap:8px;margin-bottom:10px;border:1px solid var(--line);background:var(--surface);border-radius:16px;padding:10px;padding-inline:12px 8px;font:13.5px/1.45 var(--font-ui);box-shadow:0 10px 30px -26px var(--shadow);animation:pop .16s ease-out}
.banner-ico{grid-area:ico;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--surface-2);color:var(--muted)}
.banner-text{grid-area:text;min-width:0}
.banner-act{grid-area:act}
.banner-x{grid-area:x;width:28px;height:28px;display:grid;place-items:center;border:0;background:none;border-radius:8px;color:var(--muted);padding:0}
.banner-x:hover{color:var(--ink);background:var(--hover)}
.banner.is-limit{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 28%,var(--line))}
.banner.is-limit .banner-ico{background:var(--surface);color:var(--accent-ink)}
.banner.is-err{background:var(--danger-soft);border-color:color-mix(in srgb,var(--danger) 30%,var(--line))}
.banner.is-err .banner-ico{background:var(--surface);color:var(--danger)}
.composer{position:relative;display:grid;gap:8px;border:1px solid var(--line);background:var(--surface);border-radius:24px;padding-block:14px 10px;padding-inline:18px 10px;box-shadow:0 14px 40px -28px var(--shadow);transition:border-color .15s,box-shadow .15s}
.composer:focus-within{border-color:color-mix(in srgb,var(--accent) 50%,var(--line));box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 10%,transparent),0 14px 40px -28px var(--shadow)}
.composer textarea{border:0;background:none;resize:none;outline:none;min-height:28px;max-height:220px;font:15.5px/1.55 var(--font-ui);padding:2px;width:100%;overflow-y:auto;color:var(--ink)}
.composer textarea::placeholder{color:var(--muted)}
.cbar{display:flex;align-items:center;gap:6px;min-width:0}
.cbar-sp{flex:1}
.tier-pick{position:relative;min-width:0}
.tier-btn{display:inline-flex;align-items:center;gap:5px;max-width:100%;height:34px;padding-inline:11px 8px;border:0;background:none;border-radius:10px;font:500 13.5px/1 var(--font-ui);color:var(--muted);transition:background-color .15s,color .15s}
.tier-btn:hover,.tier-btn[aria-expanded="true"]{background:var(--hover);color:var(--ink)}
.tier-btn span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tier-btn svg{flex:none;transition:transform .15s}
.tier-btn[aria-expanded="true"] svg{transform:rotate(180deg)}
.send{width:36px;height:36px;border-radius:12px;border:0;background:var(--accent);color:var(--on-accent);display:grid;place-items:center;flex:none;padding:0;transition:background-color .15s,transform .1s,filter .15s}
.send:hover:not(:disabled){filter:brightness(1.08)}
.send:active:not(:disabled){transform:scale(.94)}
.send:disabled{background:color-mix(in srgb,var(--ink) 10%,transparent);color:color-mix(in srgb,var(--ink) 40%,transparent)}
.send[data-mode="stop"]{background:var(--ink);color:var(--surface)}
.sugg{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:14px}
.sugg button{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;column-gap:12px;row-gap:1px;text-align:start;border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 65%,transparent);border-radius:14px;padding:11px 14px;color:var(--ink);font-family:var(--font-ui);transition:border-color .15s,background-color .15s}
.sugg button:hover{border-color:color-mix(in srgb,var(--accent) 40%,var(--line));background:var(--surface)}
.sugg-ico{grid-row:span 2;width:32px;height:32px;border-radius:10px;background:var(--accent-soft);color:var(--accent-ink);display:grid;place-items:center}
.sugg-k{font-size:12px;font-weight:500;color:var(--muted)}
.sugg-t{font-size:13.5px;line-height:1.4;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.disclaimer{text-align:center;font-size:12px;color:var(--muted);margin-top:10px}

/* aperçu */
.preview{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--surface);border-inline-start:1px solid var(--line);font-family:var(--font-ui)}
.pv-top{display:flex;align-items:center;gap:8px;height:56px;padding-inline:12px 10px;border-bottom:1px solid var(--line);flex:none;min-width:0}
.pv-back{display:none}
[dir="rtl"] .pv-back svg{transform:scaleX(-1)}
.pv-tabs{display:inline-flex;background:var(--surface-2);border-radius:11px;padding:3px;flex:none}
.pv-tabs button{display:inline-flex;align-items:center;gap:6px;border:0;background:none;padding:6px 11px;border-radius:8px;font:600 13px/1 var(--font-ui);color:var(--muted)}
.pv-tabs button:hover{color:var(--ink)}
.pv-tabs button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px color-mix(in srgb,var(--ink) 14%,transparent)}
.pv-name{flex:1;min-width:0;font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding-inline-start:4px}
.pv-copy{display:inline-flex;align-items:center;gap:6px;height:32px;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:0 12px;font:600 12.5px/1 var(--font-ui);color:var(--ink);flex:none}
.pv-copy:hover:not(:disabled){background:var(--surface-2)}
.pv-copy:disabled{opacity:.5;cursor:default}
.pv-body{flex:1;min-height:0;overflow:auto;margin:12px;border:1px solid var(--line);border-radius:14px;background:var(--canvas)}
.pv-body.is-code{background:var(--surface-2)}
.pv-body.is-frame{overflow:hidden}
.pv-frame{display:block;width:100%;height:100%;border:0;background:var(--canvas)}
.pv-code{margin:0;padding:16px 18px;font:12.5px/1.65 var(--font-mono);white-space:pre;color:var(--ink);tab-size:2;min-height:100%;text-align:left}

/* boîte de dialogue */
.dlg{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:20px;padding:24px 24px 20px;width:min(440px,calc(100vw - 32px));box-shadow:0 30px 80px -30px var(--shadow);font-family:var(--font-ui,var(--font-body))}
.dlg[open]{animation:pop .16s ease-out}
.dlg::backdrop{background:var(--scrim)}
.dlg form{display:grid;gap:10px;margin:0}
.dlg h2{font:600 18px/1.3 var(--font-ui,var(--font-body));letter-spacing:-.01em}
.dlg p{color:var(--muted);font-size:14.5px;overflow-wrap:anywhere}
.dlg-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin-top:12px}
.btn-ghost{min-height:38px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:11px;padding:8px 16px;font-weight:600;font-size:14px}
.btn-ghost:hover{background:var(--surface-2)}
.btn-danger{min-height:38px;border:0;background:var(--danger);color:var(--surface);border-radius:11px;padding:8px 16px;font-weight:600;font-size:14px}
.btn-danger:hover{filter:brightness(1.07)}

.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translate(-50%,16px);opacity:0;pointer-events:none;background:var(--ink);color:var(--surface);padding:10px 16px;border-radius:12px;font:500 13.5px/1.4 var(--font-ui,var(--font-body));max-width:min(92vw,480px);transition:opacity .2s,transform .2s;z-index:100;box-shadow:0 16px 40px -16px var(--shadow)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.app-root[dir="rtl"] :is(.empty h2,.md h4,.chat-title,.dlg h2,.set-top h2,.plan-name,.set-guest-h,.guest-k,.guest-wall h2){letter-spacing:0}

/* police des réponses (Paramètres > Apparence), appliquée par data-reply-font sur <html> */
html[data-reply-font="sans"] .app-root{--font-reading:var(--font-ui)}
html[data-reply-font="system"] .app-root{--font-reading:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans Arabic",sans-serif}
html[data-reply-font="legible"] .app-root{--font-reading:"Atkinson Hyperlegible","IBM Plex Sans Arabic","Geist",system-ui,sans-serif}

/* mode invité : questions rapides */
.app.is-guest .tier-pick,.app.is-guest .cbar-sp{display:none}
.composer-ico{display:grid;place-items:center;height:36px;color:var(--muted)}
.app.is-guest .composer{grid-template-columns:auto minmax(0,1fr) auto;align-items:end;column-gap:10px;padding-block:10px;padding-inline:16px 10px;border-radius:26px}
.app.is-guest .composer textarea{align-self:center;padding-block:6px;font-size:16px}
.app.is-guest .cbar{gap:10px}
.char-count{font:500 12px/1 var(--font-mono);color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.char-count.is-near{color:var(--spark)}
.char-count.is-over{color:var(--danger);font-weight:600}
.empty.is-guest .empty-in{gap:14px}
.empty.is-guest h2{font-size:clamp(32px,2.4vw + 18px,46px)}
.guest-mode{text-align:center;font-size:12.5px;color:var(--muted);margin-top:12px}
.chat:not(.is-empty) .guest-mode{display:none}
.app.is-guest .sugg{grid-template-columns:minmax(0,1fr);gap:2px;margin-top:16px}
.app.is-guest .sugg button{border:0;background:none;padding:9px 12px;border-radius:12px}
.app.is-guest .sugg button:hover{background:var(--hover)}
.app.is-guest .sugg-k{display:none}
.app.is-guest .sugg-ico{grid-row:auto;width:28px;height:28px;background:none;color:var(--muted)}
.app.is-guest .sugg-t{font-size:14.5px;-webkit-line-clamp:1}
.guest-meter{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:6px 10px;margin-bottom:10px;font:500 12.5px/1.3 var(--font-ui);color:var(--muted);text-align:center;font-variant-numeric:tabular-nums}
.gm-dots{display:inline-flex;gap:3px;flex:none}
.gm-dots i{width:14px;height:4px;border-radius:999px;background:color-mix(in srgb,var(--ink) 12%,transparent)}
.gm-dots i.on{background:var(--accent)}
.guest-meter.is-low .gm-dots i.on{background:var(--spark)}
.guest-wall{position:relative;overflow:hidden;display:grid;justify-items:center;gap:10px;text-align:center;padding:28px 22px 22px;border:1px solid var(--line);border-radius:24px;background:var(--surface);box-shadow:0 24px 60px -40px var(--shadow);animation:pop .18s ease-out}
.guest-wall::before{content:"";position:absolute;width:460px;height:460px;top:-330px;inset-inline-start:50%;margin-inline-start:-230px;border-radius:50%;background:radial-gradient(closest-side,color-mix(in srgb,var(--accent) 18%,transparent),transparent);pointer-events:none}
.guest-wall>*{position:relative}
.gw-ico{width:46px;height:46px;border-radius:14px;background:var(--accent-soft);color:var(--accent-ink);display:grid;place-items:center;margin-bottom:2px}
.guest-wall h2{font:500 clamp(21px,1.2vw + 14px,26px)/1.2 var(--font-display);letter-spacing:-.015em;text-wrap:balance}
.gw-time{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;background:var(--surface-2);font:500 13px/1.2 var(--font-ui);color:var(--ink);font-variant-numeric:tabular-nums}
.gw-time svg{flex:none;color:var(--accent-ink)}
.gw-text{max-width:48ch;color:var(--muted);font-size:14px;line-height:1.55;text-wrap:pretty}
.gw-acts{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:6px}
.gw-acts .ui-btn{min-height:42px;padding-inline:18px}

/* paramètres : grande fenêtre, onglets à gauche */
.set-dlg{padding:0;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:22px;width:min(900px,calc(100vw - 48px));height:min(680px,calc(100dvh - 48px));max-width:none;max-height:none;overflow:hidden;box-shadow:0 40px 100px -40px var(--shadow);font-family:var(--font-ui)}
.set-dlg[open]{display:flex;animation:pop .16s ease-out}
.set-dlg::backdrop{background:var(--scrim)}
.set-shell{display:flex;flex-direction:column;flex:1;min-width:0;min-height:0}
.set-top{display:flex;align-items:center;gap:12px;height:62px;padding-inline:24px 14px;border-bottom:1px solid var(--line);flex:none}
.set-top h2{flex:1;min-width:0;font:500 22px/1.2 var(--font-display);letter-spacing:-.015em}
.set-body{flex:1;min-height:0;display:grid;grid-template-columns:224px minmax(0,1fr)}
.set-nav{display:flex;flex-direction:column;gap:2px;padding:14px 10px;border-inline-end:1px solid var(--line);background:color-mix(in srgb,var(--surface-2) 45%,var(--surface));overflow-y:auto}
.set-tab{display:flex;align-items:center;gap:10px;min-height:38px;padding:8px 12px;border:0;background:none;border-radius:10px;text-align:start;font:500 14px/1.2 var(--font-ui);color:var(--muted);transition:background-color .15s,color .15s}
.set-tab svg{flex:none}
.set-tab:hover{color:var(--ink);background:color-mix(in srgb,var(--ink) 6%,transparent)}
.set-tab[aria-selected="true"]{color:var(--ink);background:var(--accent-soft)}
.set-tab[aria-selected="true"] svg{color:var(--accent-ink)}
.set-tab:focus-visible{outline-offset:-2px}
.set-panes{min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:24px 32px 40px}
.set-pane{display:grid;gap:22px;max-width:620px;border-radius:8px}
.set-pane:focus-visible{outline-offset:8px}
.set-h{font:600 18px/1.3 var(--font-ui);letter-spacing:-.01em}
.set-lead{margin-top:-12px;color:var(--muted);font-size:14px}
.set-fields{display:grid;gap:20px}
.set-field{display:grid;gap:7px;min-width:0}
.set-field label,.set-k{font:600 13.5px/1.3 var(--font-ui);color:var(--ink)}
.set-lrow{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:4px 12px;min-width:0}
.set-input{width:100%;min-width:0;border:1px solid var(--line);background:var(--surface-2);border-radius:12px;padding:10px 13px;font:15px/1.4 var(--font-ui);color:var(--ink);transition:border-color .15s,box-shadow .15s,background-color .15s}
.set-input:hover{border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}
.set-input:focus{outline:none;border-color:var(--accent);background:var(--surface);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.set-input[aria-invalid="true"]{border-color:var(--danger)}
.set-input::placeholder{color:color-mix(in srgb,var(--muted) 80%,transparent)}
.set-area{resize:vertical;min-height:136px;line-height:1.55}
.set-help{font-size:13px;line-height:1.5;color:var(--muted)}
.set-count{justify-self:end;font:500 12px/1 var(--font-mono);color:var(--muted);font-variant-numeric:tabular-nums}
.set-count.is-near{color:var(--spark)}
.saved{display:inline-flex;align-items:center;gap:5px;min-height:1.2em;font:500 12.5px/1.2 var(--font-ui);color:var(--muted)}
.saved.is-ok{color:var(--ok)}
.saved.is-err{color:var(--danger)}
.saved svg{flex:none}
.set-group{display:grid;gap:12px;min-width:0;margin:0;padding:0;border:0}
.set-group legend{padding:0;margin-bottom:12px;font:600 14px/1.3 var(--font-ui)}
.opt-input{position:absolute;width:1px;height:1px;margin:0;opacity:0;pointer-events:none}
.theme-opts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.theme-opt,.font-opt,.lang-opt{position:relative;cursor:pointer;min-width:0}
.theme-opt{display:grid;gap:8px}
.theme-thumb{display:flex;height:86px;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .15s,box-shadow .15s}
.theme-opt:hover .theme-thumb,.font-opt:hover .font-card,.lang-opt:hover .lang-card{border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}
.opt-input:checked+.theme-thumb,.opt-input:checked+.font-card{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.opt-input:focus-visible+.theme-thumb,.opt-input:focus-visible+.font-card,.opt-input:focus-visible+.lang-card{outline:2px solid var(--accent);outline-offset:3px}
.opt-name{font:500 13.5px/1.2 var(--font-ui);color:var(--ink);text-align:center}
.tt-side{width:26%;flex:none}
.tt-main{flex:1;display:flex;flex-direction:column;gap:6px;min-width:0;padding:12px 10px}
.tt-line{width:80%;height:5px;border-radius:999px}
.tt-line+.tt-line{width:55%}
.tt-bubble{width:44%;height:12px;margin-top:auto;align-self:flex-end;border-radius:6px}
.tt-half{flex:1;display:flex;min-width:0}
.tt-light .tt-side{width:36%}
.theme-thumb-light,.tt-light{background:#F5F6FA}
.theme-thumb-light .tt-side,.tt-light .tt-side{background:#E6E9F2}
.theme-thumb-light .tt-line,.tt-light .tt-line{background:#D3D8E6}
.theme-thumb-light .tt-bubble,.tt-light .tt-bubble{background:#C9CEFF}
.theme-thumb-dark,.tt-dark{background:#07080F}
.theme-thumb-dark .tt-side{background:#161927}
.theme-thumb-dark .tt-line,.tt-dark .tt-line{background:#2A2F45}
.theme-thumb-dark .tt-bubble,.tt-dark .tt-bubble{background:#2E348A}
.font-opts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.font-card{display:grid;justify-items:center;gap:6px;padding:14px 8px 12px;border:1px solid var(--line);border-radius:14px;background:var(--surface);transition:border-color .15s,box-shadow .15s,background-color .15s}
.opt-input:checked+.font-card{background:color-mix(in srgb,var(--accent-soft) 50%,var(--surface))}
.font-aa{font-size:28px;line-height:1.15;color:var(--ink)}
.font-serif{font-family:"Source Serif 4","Noto Naskh Arabic",Georgia,serif}
.font-sans{font-family:"Geist","IBM Plex Sans Arabic",system-ui,sans-serif}
.font-system{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.font-legible{font-family:"Atkinson Hyperlegible","IBM Plex Sans Arabic","Geist",system-ui,sans-serif}
.font-preview{display:grid;gap:8px;padding:16px 18px;border-radius:16px;background:var(--surface-2)}
.font-preview .md{font-size:16px}
.lang-opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.lang-card{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);transition:border-color .15s,background-color .15s}
.lang-card b{font-size:14.5px;font-weight:500}
.lang-check{display:grid;color:var(--accent);visibility:hidden}
.opt-input:checked+.lang-card{border-color:var(--accent);background:color-mix(in srgb,var(--accent-soft) 50%,var(--surface))}
.opt-input:checked+.lang-card .lang-check{visibility:visible}
.set-rows{display:grid}
.set-row{display:flex;align-items:center;justify-content:space-between;gap:12px 18px;padding:16px 0;border-bottom:1px solid var(--line)}
.set-rows>.set-row:first-child{padding-top:0}
.set-row-txt{display:grid;gap:4px;flex:1;min-width:0}
.set-row>.ui-btn{flex:none}
.set-v{font-size:14.5px;overflow-wrap:anywhere}
.set-sub{display:grid;gap:14px;padding:16px 0 18px;border-bottom:1px solid var(--line)}
.set-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}
.set-sh{font:600 14px/1.3 var(--font-ui)}
.danger-zone{display:grid;gap:4px;padding:16px 18px;border:1px solid color-mix(in srgb,var(--danger) 35%,var(--line));border-radius:16px}
.danger-zone .set-sh{color:var(--danger)}
.danger-zone .set-row{padding:8px 0 4px;border-bottom:0}
.confirm-box{display:grid;gap:12px;margin-top:6px;padding:16px;border-radius:14px;background:var(--danger-soft)}
.confirm-title{font:600 14.5px/1.35 var(--font-ui)}
.confirm-box .set-help{color:var(--ink)}
.confirm-box .set-input{background:var(--surface)}
.set-guest{display:grid;justify-items:start;gap:14px;padding:20px;border:1px solid color-mix(in srgb,var(--accent) 28%,var(--line));border-radius:18px;background:color-mix(in srgb,var(--accent-soft) 55%,var(--surface))}
.set-guest .guest-ava{width:36px;height:36px;background:var(--surface)}
.set-guest-txt{display:grid;gap:6px}
.set-guest-h{font:500 20px/1.3 var(--font-display);letter-spacing:-.01em}
.set-guest .set-actions{justify-content:flex-start}
.plan-body{display:grid;gap:24px}
.plan-body:empty{display:none}
.plan-card{display:grid;gap:4px;padding:18px 20px;border:1px solid var(--line);border-radius:18px;background:var(--surface-2)}
.plan-name{font:500 30px/1.1 var(--font-display);letter-spacing:-.02em}
.plan-tag{color:var(--muted);font-size:14px}
.set-sec{display:grid;gap:12px}
.plan-gauges{display:grid;gap:16px}
.plan-gauge{display:grid;gap:7px}
.plan-gauge .gauge-head{font-size:13.5px}
.plan-gauge .gauge{height:6px}
.plan-gauge small{font-size:12.5px;color:var(--muted)}
.plan-models{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.plan-models li{display:flex;align-items:flex-start;gap:12px;padding:10px 12px;border-radius:12px;background:var(--surface-2)}
.plan-mi{display:grid;place-items:center;width:24px;height:24px;flex:none;border-radius:50%;background:var(--accent-soft);color:var(--accent-ink)}
.plan-models li.is-off .plan-mi{background:color-mix(in srgb,var(--ink) 7%,transparent);color:var(--muted)}
.plan-models li.is-off .plan-mt{opacity:.62}
.plan-mt{display:grid;gap:2px;min-width:0}
.plan-mt b{font-size:14px;font-weight:600}
.plan-mt span{font-size:12.5px;color:var(--muted)}
.plan-next{justify-items:start;padding:18px 20px;border:1px solid color-mix(in srgb,var(--accent) 30%,var(--line));border-radius:18px;background:color-mix(in srgb,var(--accent-soft) 50%,var(--surface))}
.plan-perks{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.plan-perks li{display:flex;align-items:flex-start;gap:10px;font-size:14px}
.plan-perks svg{flex:none;margin-top:2px;color:var(--accent-ink)}
.plan-top{display:flex;align-items:center;gap:8px;color:var(--ok);font-size:14px;font-weight:500}

/* large et moyen : une conversation vide réunit l'accueil et le compositeur au centre */
@media (min-width:761px){
  .chat.is-empty .msgs{flex:1 1 0}
  .chat.is-empty .composer-wrap{flex:1.3 1 0;padding-top:24px}
  .chat.is-empty .composer-wrap::before,.chat.is-empty .disclaimer{display:none}
  /* invité : un grand champ de question, généreux */
  .app.is-guest .chat.is-empty .composer{padding-block:14px;padding-inline:20px 12px;border-radius:28px;box-shadow:0 26px 60px -36px var(--shadow)}
  .app.is-guest .chat.is-empty .composer textarea{font-size:17.5px}
  .app.is-guest .chat.is-empty .composer-ico{height:38px}
}
/* moyen : l'aperçu passe par-dessus la conversation */
@media (max-width:1060px){
  .app{--side-w:248px}
  .app.has-preview{grid-template-columns:var(--side-w) minmax(0,1fr)}
  .preview{position:absolute;top:0;bottom:0;inset-inline-end:0;width:min(620px,94%);z-index:20;box-shadow:0 0 60px -24px var(--shadow)}
}
/* étroit : la mise en page de l'app Flutter */
@media (max-width:760px){
  .app,.app.has-preview{grid-template-columns:minmax(0,1fr)}
  .side{position:absolute;top:0;bottom:0;inset-inline-start:0;width:min(304px,86%);z-index:30;padding-bottom:calc(8px + env(safe-area-inset-bottom,0px));transform:translateX(-105%);visibility:hidden;transition:transform .25s ease,visibility 0s linear .25s}
  [dir="rtl"] .side{transform:translateX(105%)}
  .app.drawer .side{transform:none;visibility:visible;box-shadow:0 0 60px -24px var(--shadow);transition:transform .25s ease}
  .scrim{display:block;position:absolute;inset:0;background:var(--scrim);opacity:0;pointer-events:none;transition:opacity .25s;z-index:25}
  .app.drawer .scrim{opacity:1;pointer-events:auto}
  .only-narrow{display:inline-grid}
  .preview{width:100%;border-inline-start:0;box-shadow:none;z-index:40}
  .pv-back{display:inline-grid}
  .pv-close{display:none}
  .pv-top{padding:0 8px}
  .pv-copy{padding:0 10px}
  .pv-copy-txt{display:none}
  .pv-body{margin:8px}
  .chat-top{height:54px;padding:0 6px}
  .chat-title{text-align:center;font:600 16px/1.2 var(--font-ui)}
  .app.is-guest .chat-title{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .app.is-guest .top-acts{margin-inline-start:auto}
  .col{padding:20px 16px 28px;gap:28px}
  .msg.user{max-width:88%}
  .composer-wrap{padding:0 10px calc(10px + env(safe-area-inset-bottom,0px))}
  .composer{border-radius:24px;padding-block:12px 8px;padding-inline:16px 8px}
  .composer textarea{font-size:16px}
  .disclaimer{display:none}
  .banner{grid-template-columns:auto minmax(0,1fr) auto;grid-template-areas:"ico text x" ". act .";margin-bottom:8px}
  .banner-act{justify-self:start}
  .empty-in{margin-block:auto}
  .sugg{order:-1;display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:8px;width:auto;max-width:none;margin:0 -10px 10px;padding:2px 10px;scrollbar-width:none}
  .sugg::-webkit-scrollbar{display:none}
  .sugg button{flex:0 0 min(250px,74%);scroll-snap-align:start}
  .app.is-guest .sugg{margin-top:0}
  .app.is-guest .sugg button{border:1px solid var(--line);background:var(--surface)}
  .app.is-guest .sugg-t{-webkit-line-clamp:2}
  .app.is-guest .star-btn{display:none}
  .guest-wall{padding:22px 16px 18px;border-radius:20px}
  /* menu du compte : la langue s'ouvre par-dessus, avec un retour */
  .lang-menu{inset-inline:0;width:auto}
  .pop-back{display:flex}
  .me-pick.is-sub .me-menu{visibility:hidden}
  /* paramètres : plein écran, onglets en haut */
  .set-dlg{width:100%;height:100%;margin:0;border:0;border-radius:0}
  .set-top{height:56px;padding-inline:16px 8px}
  .set-body{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr)}
  .set-nav{flex-direction:row;gap:4px;padding:8px 10px;overflow-x:auto;overflow-y:hidden;border-inline-end:0;border-bottom:1px solid var(--line);scrollbar-width:none}
  .set-nav::-webkit-scrollbar{display:none}
  .set-tab{flex:none;min-height:36px;padding:7px 12px;white-space:nowrap}
  .set-panes{padding:18px 16px calc(28px + env(safe-area-inset-bottom,0px))}
  .theme-opts{gap:8px}
  .theme-thumb{height:66px}
  .font-opts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .set-row{flex-wrap:wrap}
}
@media (max-width:480px){
  .lbl-long{display:none}
  .lbl-short{display:inline}
}
@media (max-width:360px){
  .top-login{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}