/* ============================================================
   Filigrane Identité — design system (constellation, base Floutt)
   ink + accent bleu, aplats only : aucun dégradé, aucun mauve
   ============================================================ */
:root{
  --ink:#141821; --paper:#f4f6f9; --panel:#ffffff; --line:#e3e7ec;
  --line-strong:#c6cdd7; --muted:#586170; --accent:#0b3d91; --accent-ink:#0b3d91;
  --danger:#9a3412; --radius:6px;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --sans:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}
/* thème sombre disponible, mais le clair est le défaut (fixé par le script inline des pages) */
@media (prefers-color-scheme:dark){
  :root[data-theme="dark"]{
    --ink:#eef1f5; --paper:#12151b; --panel:#1b1f27; --line:#2b303a;
    --line-strong:#3e4552; --muted:#9aa2b0; --accent:#6f9be8; --accent-ink:#8fb2ee; --danger:#e06a43;
  }
}
:root[data-theme="dark"]{
  --ink:#eef1f5; --paper:#12151b; --panel:#1b1f27; --line:#2b303a;
  --line-strong:#3e4552; --muted:#9aa2b0; --accent:#6f9be8; --accent-ink:#8fb2ee; --danger:#e06a43;
}

*{box-sizing:border-box}
[hidden]{display:none!important}

/* ---- bandeaux PWA (news + mise à jour) ---- */
.pwa-banner{display:flex; align-items:center; gap:12px; padding:9px 16px;
  font:600 14px var(--sans); color:#fff; background:var(--accent);
  border-bottom:1px solid rgba(0,0,0,.12)}
.pwa-banner.pwa-update{background:var(--ink); color:var(--paper)}
.pwa-banner.pwa-warn{background:var(--danger)}
.pwa-banner .pwa-msg{flex:1; min-width:0}
.pwa-banner .pwa-cta{flex:none; color:inherit; font:700 13px var(--sans);
  text-decoration:none; border:1px solid currentColor; border-radius:100px;
  padding:4px 12px; cursor:pointer; background:transparent}
.pwa-banner .pwa-cta:hover{background:rgba(255,255,255,.15)}
.pwa-banner .pwa-close{flex:none; background:transparent; border:0; color:inherit;
  font-size:22px; line-height:1; cursor:pointer; padding:0 2px; opacity:.85}
.pwa-banner .pwa-close:hover{opacity:1}

html{scroll-behavior:smooth}
body{margin:0; font-family:var(--sans); color:var(--ink); background:var(--paper);
     line-height:1.55; -webkit-font-smoothing:antialiased}
a{color:var(--accent-ink); text-underline-offset:2px}
.wrap{max-width:1080px; margin:0 auto; padding:0 20px}
.narrow{max-width:760px}
.sr{position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0)}

/* ---- header / nav ---- */
header{border-bottom:1px solid var(--line); background:var(--panel); position:sticky; top:0; z-index:20}
.bar{display:flex; align-items:center; justify-content:space-between; gap:16px; padding:12px 0}
.brand{display:flex; align-items:baseline; gap:10px; text-decoration:none; color:var(--ink)}
.logo{font-weight:800; letter-spacing:-.02em; font-size:22px}
.logo b{color:var(--accent)}
.brand .say{font:500 12px/1 var(--mono); color:var(--muted)}
nav.main{display:flex; align-items:center; gap:6px}
nav.main a{font:600 14px var(--sans); color:var(--ink); text-decoration:none; padding:8px 12px; border-radius:var(--radius)}
nav.main a:hover{background:color-mix(in srgb,var(--ink) 6%,transparent)}
nav.main a[aria-current="page"]{color:var(--accent-ink); background:color-mix(in srgb,var(--accent) 10%,transparent)}
:root[data-theme="dark"] nav.main a[aria-current="page"]{color:var(--accent)}
.right{display:flex; align-items:center; gap:10px}
.badge{display:inline-flex; align-items:center; gap:8px; font:600 12px/1 var(--mono);
       color:var(--accent-ink); border:1px solid var(--accent); padding:7px 10px; border-radius:100px; white-space:nowrap}
:root[data-theme="dark"] .badge{color:var(--accent)}
@media (prefers-color-scheme:dark){ :root:not([data-theme="light"]) .badge{color:var(--accent)} }
.dot{width:7px; height:7px; border-radius:50%; background:var(--accent)}
.iconbtn{display:inline-grid; place-items:center; width:36px; height:36px; padding:0;
         border:1px solid var(--line-strong); border-radius:var(--radius); background:var(--panel); color:var(--ink); cursor:pointer}
.iconbtn:hover{border-color:var(--muted)}
.iconbtn:focus-visible{outline:2px solid var(--accent); outline-offset:2px}
@media (max-width:640px){ nav.main a{padding:8px 8px} .brand .say{display:none} .badge{display:none} }

/* ---- boutons ---- */
.btn{appearance:none; cursor:pointer; font:600 14px var(--sans); border-radius:var(--radius);
     padding:11px 18px; border:1px solid var(--ink); background:var(--ink); color:var(--panel);
     text-decoration:none; display:inline-flex; align-items:center; gap:8px}
.btn:focus-visible{outline:2px solid var(--accent); outline-offset:2px}
.btn.accent{background:var(--accent); border-color:var(--accent); color:#fff}
.btn.ghost{background:transparent; color:var(--ink)}
.btn.ghost:hover{border-color:var(--line-strong)}
.btn.lg{padding:13px 22px; font-size:15px}
.btn[disabled]{opacity:.4; cursor:not-allowed}

/* ---- surfaces ---- */
.panel{background:var(--panel); border:1px solid var(--line); border-radius:var(--radius)}

/* ---- hero ---- */
.hero{padding:52px 0 26px}
.hero .eyebrow{font:600 12px/1 var(--mono); letter-spacing:.1em; text-transform:uppercase; color:var(--accent-ink); margin:0 0 16px}
:root[data-theme="dark"] .hero .eyebrow{color:var(--accent)}
.hero h1{margin:0 0 16px; font-size:38px; line-height:1.1; letter-spacing:-.025em; max-width:22ch}
.hero p.lead{margin:0 0 24px; font-size:18px; color:var(--muted); max-width:58ch}
.hero .cta{display:flex; flex-wrap:wrap; gap:12px; align-items:center}
.trust{display:flex; flex-wrap:wrap; gap:18px; margin-top:24px; font:500 13px var(--mono); color:var(--muted)}
.trust span{display:inline-flex; align-items:center; gap:8px}
.trust .tick{color:var(--accent)}
@media (max-width:640px){ .hero{padding:30px 0 14px} .hero h1{font-size:29px} }

/* ---- section ---- */
section.block{padding:0}
section.block::before{content:""; display:block; width:calc(100% - 40px); max-width:1040px;
                      margin:38px auto; border-top:1px solid var(--line)}
.hero + .block::before{display:none}
.hero + .block{padding-top:6px}
.kicker{font:600 12px var(--mono); text-transform:uppercase; letter-spacing:.09em; color:var(--muted); margin:0 0 8px}
h2.sec{margin:0 0 6px; font-size:26px; letter-spacing:-.02em}
.sub{margin:0 0 24px; color:var(--muted); max-width:62ch}

/* ---- avant / après ---- */
.ba{display:grid; grid-template-columns:1fr 1fr; gap:16px; align-items:start}
.ba figure{margin:0}
.ba .frame{border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--panel)}
.ba .frame svg{display:block; width:100%; height:auto}
.ba figcaption{display:flex; align-items:center; gap:8px; margin-top:10px; font:600 12px var(--mono); text-transform:uppercase; letter-spacing:.06em; color:var(--muted)}
.ba .tag{font:700 11px var(--mono); padding:3px 8px; border-radius:4px; border:1px solid var(--line-strong)}
.ba .tag.after{color:#fff; background:var(--accent); border-color:var(--accent)}
.demo-row{display:grid; grid-template-columns:1fr 1fr; gap:26px}
@media (max-width:760px){ .demo-row{grid-template-columns:1fr} }

/* ---- grille de cartes ---- */
.grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:14px}
.card{padding:18px}
.card .ic{width:30px; height:30px; color:var(--accent); margin-bottom:10px}
.card h3{margin:0 0 6px; font-size:16px}
.card p{margin:0; font-size:14px; color:var(--muted)}
a.card{text-decoration:none; color:inherit; display:block; transition:border-color .12s}
a.card:hover{border-color:var(--line-strong)}
.card .more{display:inline-block; margin-top:12px; font:600 13px var(--sans); color:var(--accent-ink)}
:root[data-theme="dark"] .card .more{color:var(--accent)}

/* ---- étapes numérotées ---- */
.steps{counter-reset:s; display:grid; gap:12px; margin:20px 0; padding:0}
.steps li{list-style:none; display:flex; gap:12px; align-items:flex-start; min-width:0}
.steps li::before{counter-increment:s; content:counter(s); flex:none; width:26px; height:26px; border-radius:50%;
                  background:var(--accent); color:#fff; display:grid; place-items:center; font:700 13px var(--mono)}
.steps li strong{font-weight:700}

/* ---- bloc "sur le même sujet" ---- */
.related{margin-top:30px; padding-top:22px; border-top:1px solid var(--line)}
.related h2{font-size:16px; margin:0 0 12px}
.related ul{list-style:none; padding:0; margin:0; display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:10px}
.related a{display:block; padding:12px 14px; border:1px solid var(--line); border-radius:var(--radius); background:var(--panel); text-decoration:none; font-weight:600; color:var(--ink)}
.related a:hover{border-color:var(--line-strong)}
.related a span{display:block; font-weight:400; font-size:13px; color:var(--muted); margin-top:2px}

/* ---- FAQ ---- */
.faq{max-width:760px}
.faq details{border:1px solid var(--line); border-radius:var(--radius); padding:0 16px; margin-bottom:10px; background:var(--panel)}
.faq summary{cursor:pointer; padding:15px 0; font-weight:600; list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+"; float:right; color:var(--muted); font-family:var(--mono)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 15px; color:var(--muted); font-size:14px}

/* ---- bandeau CTA ---- */
.cta-band{padding:0 0 46px; text-align:center}
.cta-band::before{content:""; display:block; width:calc(100% - 40px); max-width:1040px;
                  margin:38px auto; border-top:1px solid var(--line)}
.cta-band h2{margin:0 0 8px; font-size:26px; letter-spacing:-.02em}
.cta-band p{margin:0 0 20px; color:var(--muted)}

/* ---- prose ---- */
.prose{padding:40px 0}
.prose h1{font-size:30px; letter-spacing:-.02em; margin:0 0 6px}
.prose .updated{font:500 12px var(--mono); color:var(--muted); margin:0 0 28px}
.prose h2{font-size:18px; margin:30px 0 8px}
.prose p, .prose li{color:var(--ink); font-size:15px}
.prose .muted, .prose .muted *{color:var(--muted)}
.prose ul{padding-left:20px}
.prose .legal-block{border:1px solid var(--line); border-radius:var(--radius); padding:16px 18px; background:var(--panel); margin:14px 0}
.prose code{font:500 13px var(--mono); background:color-mix(in srgb,var(--ink) 8%,transparent); padding:1px 5px; border-radius:4px}

/* ---- auteur ---- */
.author{display:flex; gap:22px; align-items:flex-start; flex-wrap:wrap}
.author .avatar{width:180px; height:180px; flex:none; object-fit:contain; border-radius:50%}
@media (max-width:560px){ .author .avatar{width:140px; height:140px} }
.author .bio{flex:1; min-width:280px}
.social{display:flex; gap:10px; margin-top:16px; flex-wrap:wrap}
.social a{display:inline-flex; align-items:center; gap:8px; text-decoration:none; color:var(--ink);
          border:1px solid var(--line-strong); border-radius:var(--radius); padding:9px 13px; font-weight:600; font-size:14px}
.social a:hover{border-color:var(--muted)}
.social svg{width:17px; height:17px}

/* ---- footer ---- */
footer{border-top:1px solid var(--line); margin-top:40px; background:var(--panel)}
.foot{display:flex; flex-wrap:wrap; gap:14px 26px; align-items:center; justify-content:space-between; padding:22px 0}
.foot nav{display:flex; flex-wrap:wrap; gap:16px}
.foot a{color:var(--muted); text-decoration:none; font-size:13px}
.foot a:hover{color:var(--ink)}
.foot .note{font:500 12px var(--mono); color:var(--muted)}
.foot-brand{color:var(--ink); font-weight:700}
.foot-brand b{color:var(--accent); font-weight:700}

/* ============================================================
   Interface de l'outil (filigrane)
   ============================================================ */
.dropzone{width:100%; min-height:280px; border:2px dashed var(--line-strong); border-radius:var(--radius);
          display:flex; flex-direction:column; align-items:center; justify-content:center; gap:14px;
          color:var(--muted); text-align:center; cursor:pointer; padding:30px}
.dropzone.drag{border-color:var(--accent); background:color-mix(in srgb,var(--accent) 6%,transparent)}
.dropzone h2{margin:0; color:var(--ink); font-size:17px}
.dropzone .hint{font:500 12px var(--mono)}

/* ---- page d'accueil = outil : intro deux zones + démo animée ---- */
.hero-split{display:grid; grid-template-columns:1.05fr .95fr; gap:32px; align-items:center; padding:16px 0 6px}
@media (max-width:860px){ .hero-split{grid-template-columns:1fr; gap:22px} }
.hero-left .eyebrow{font:600 12px/1 var(--mono); letter-spacing:.1em; text-transform:uppercase; color:var(--accent-ink); margin:0 0 14px}
:root[data-theme="dark"] .hero-left .eyebrow{color:var(--accent)}
.hero-left h1{margin:0 0 14px; font-size:32px; line-height:1.1; letter-spacing:-.025em}
.hero-left .lead{margin:0 0 18px; font-size:17px; color:var(--muted); max-width:52ch}
.hero-left .trust{margin:0 0 18px}
@media (max-width:640px){ .hero-left h1{font-size:26px} }

.dropcard{border:2px dashed var(--line-strong); border-radius:var(--radius); background:var(--panel);
          min-height:280px; display:flex; flex-direction:column; align-items:center; justify-content:center;
          gap:13px; text-align:center; padding:34px 24px; cursor:pointer}
.dropcard.drag{border-color:var(--accent); background:color-mix(in srgb,var(--accent) 6%,transparent)}
.dropcard .up-ic{width:38px; height:38px; color:var(--muted)}
.dropcard h2{margin:0; font-size:19px; color:var(--ink)}
.dropcard .hint{font:500 12px var(--mono); color:var(--muted)}

/* démo animée : une carte qui alterne avant / après (filigrane qui apparaît) */
.demo-anim{position:relative; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--panel); max-width:420px}
.demo-anim .layer{display:block; width:100%; height:auto}
.demo-anim .layer.wm{position:absolute; inset:0; opacity:0; animation:wmPulse 5.5s ease-in-out infinite}
.demo-anim .lab{position:absolute; left:12px; top:12px; font:700 11px var(--mono); letter-spacing:.06em; padding:4px 9px; border-radius:6px}
.demo-anim .lab-a{color:var(--muted); border:1px solid var(--line-strong); background:var(--panel); animation:labA 5.5s infinite}
.demo-anim .lab-b{color:#fff; background:var(--accent); opacity:0; animation:labB 5.5s infinite}
@keyframes wmPulse{0%,15%{opacity:0} 25%,75%{opacity:.92} 85%,100%{opacity:0}}
@keyframes labA{0%,18%{opacity:1} 26%{opacity:0} 74%{opacity:0} 84%,100%{opacity:1}}
@keyframes labB{0%,22%{opacity:0} 30%,70%{opacity:1} 78%,100%{opacity:0}}
@media (prefers-reduced-motion:reduce){
  .demo-anim .layer.wm{opacity:.92; animation:none}
  .demo-anim .lab-a{display:none}
  .demo-anim .lab-b{opacity:1; animation:none}
}

/* case "renforcer la sécurité" */
.chk-line{display:flex; align-items:flex-start; gap:9px; font-size:13px; cursor:pointer; user-select:none; color:var(--ink)}
.chk-line input{width:16px; height:16px; margin-top:2px; accent-color:var(--accent); flex:none}
.chk-line .chk-hint{color:var(--muted); font-size:12px}

.tool-grid{display:grid; grid-template-columns:1.5fr 1fr; gap:16px; align-items:start; margin-top:16px}
@media (max-width:860px){ .tool-grid{grid-template-columns:1fr} }
.canvas-holder{position:relative; line-height:0; width:fit-content; max-width:100%; margin:0 auto; border:1px solid var(--line); border-radius:4px; background:var(--panel)}
#base{max-width:100%; height:auto; display:block}
#overlay{position:absolute; inset:0; max-width:100%; height:auto; cursor:crosshair; touch-action:none}
.preview-wrap{padding:16px}
.preview-actions{display:flex; flex-wrap:wrap; align-items:center; gap:10px; padding:14px 16px; border-top:1px solid var(--line)}
.preview-actions .spacer{flex:1}
.meta{font:500 12px var(--mono); color:var(--muted)}

.controls{padding:16px; display:grid; gap:14px}
.field{display:grid; gap:5px}
.field > label{font:600 11px var(--mono); text-transform:uppercase; letter-spacing:.05em; color:var(--muted)}
.field input[type=text], .field select, .controls textarea{
  width:100%; font:400 14px var(--sans); color:var(--ink); background:var(--panel);
  border:1px solid var(--line-strong); border-radius:var(--radius); padding:9px 11px}
.field input:focus, .field select:focus, .controls textarea:focus{outline:2px solid var(--accent); outline-offset:0; border-color:var(--accent)}
.controls textarea{min-height:70px; resize:vertical; line-height:1.4}
.row2{display:grid; grid-template-columns:1fr 1fr; gap:12px}
.slider-row{display:grid; grid-template-columns:8.5ch 1fr 3ch; gap:10px; align-items:center}
.slider-row > label{font:600 11px var(--mono); text-transform:uppercase; color:var(--muted); white-space:nowrap}
.slider-row input[type=range]{width:100%; accent-color:var(--accent)}
.slider-row .val{font:600 12px var(--mono); text-align:right; color:var(--muted)}
.seg{display:inline-flex; border:1px solid var(--line-strong); border-radius:var(--radius); overflow:hidden; width:100%}
.seg button{appearance:none; border:0; background:var(--panel); color:var(--ink); font:600 13px var(--sans);
            padding:9px 13px; cursor:pointer; border-right:1px solid var(--line); flex:1}
.seg button:last-child{border-right:0}
.seg button[aria-pressed="true"]{background:var(--ink); color:var(--panel)}
input[type=color]{width:36px; height:32px; padding:0; border:1px solid var(--line-strong); border-radius:4px; background:none; cursor:pointer; vertical-align:middle}
.reset-link{background:none; border:0; color:var(--accent-ink); font:600 12px var(--sans); cursor:pointer; padding:0; text-align:left; justify-self:start}
:root[data-theme="dark"] .reset-link{color:var(--accent)}
.controls hr{border:0; border-top:1px solid var(--line); margin:2px 0}
.tool-note{margin:14px 0 0; font-size:13px; color:var(--muted)}
kbd{font:600 12px var(--mono); border:1px solid var(--line-strong); border-bottom-width:2px; border-radius:4px; padding:1px 5px}