/* ============================================================
   Leads-Tracking.fr — DARK SaaS / DASHBOARD-DATA (violet)
   Direction unique anti-footprint. Geist + Inter. CSS-first.
   ============================================================ */

/* ---- Fonts (self-hosted, Geist variable) ---- */
@font-face{
  font-family:"Geist";
  src:url(fonts/Geist-Variable.woff2) format("woff2");
  font-weight:100 900;font-style:normal;font-display:swap;
}
@font-face{
  font-family:"Geist Mono";
  src:url(fonts/GeistMono-Variable.woff2) format("woff2");
  font-weight:100 900;font-style:normal;font-display:swap;
}

/* ---- Tokens ---- */
:root{
  --bg:#0d0c14;
  --surface:#16151f;
  --surface-2:#1c1b27;
  --line:#262433;
  --line-2:#332f45;
  --text:#e7e5ee;
  --muted:#a09cb4;
  --muted-2:#6f6b85;
  --violet:#6d28d9;
  --violet-2:#8b5cf6;
  --violet-soft:rgba(109,40,217,.14);
  --green:#28d98a;
  --green-soft:rgba(40,217,138,.12);
  --radius:16px;
  --radius-sm:10px;
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --sans:"Geist","Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);font-size:17px;line-height:1.7;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--sans);font-weight:650;line-height:1.18;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,4.5vw,3.25rem);font-weight:700}
h2{font-size:clamp(1.5rem,3vw,2.1rem)}
h3{font-size:1.3rem}
p{margin:0 0 1.1em}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(18px,4vw,32px)}

/* ---- ambient dashboard background (zero CLS, decorative) ---- */
.bg-deco{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.bg-deco::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 420px at 78% -8%,var(--violet-soft),transparent 70%),
    radial-gradient(520px 360px at 4% 8%,rgba(40,217,138,.06),transparent 70%);
}
.bg-deco::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000,transparent 62%);
          mask-image:radial-gradient(circle at 50% 0%,#000,transparent 62%);
}

/* ---- skip link / a11y ---- */
.skip-link{position:absolute;left:-999px;top:0;z-index:200;background:var(--violet);color:#fff;padding:10px 16px;border-radius:8px}
.skip-link:focus{left:12px;top:12px}
:focus-visible{outline:2px solid var(--violet-2);outline-offset:3px;border-radius:4px}

/* ---- header ---- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(13,12,20,.72);backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:1.12rem;letter-spacing:-.02em;flex:0 0 auto}
.brand .mark{width:30px;height:30px;flex:0 0 auto}
.brand b{color:var(--violet-2)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-menu a{
  color:var(--muted);font-size:.93rem;padding:8px 12px;border-radius:8px;
  transition:color .2s,background .2s;white-space:nowrap;
}
.nav-menu a:hover{color:var(--text);background:var(--surface)}
.nav-cta{
  background:var(--violet)!important;color:#fff!important;font-weight:600;
  box-shadow:0 6px 20px -8px var(--violet);
}
.nav-cta:hover{background:var(--violet-2)!important}
.menu-toggle{display:none;background:var(--surface);border:1px solid var(--line);color:var(--text);
  width:42px;height:42px;border-radius:10px;font-size:20px;cursor:pointer;margin-left:auto}

@media(max-width:900px){
  .menu-toggle{display:block}
  .nav-menu{
    position:absolute;left:0;right:0;top:66px;flex-direction:column;align-items:stretch;
    background:var(--bg);border-bottom:1px solid var(--line);padding:12px;gap:2px;
    margin-left:0;display:none;
  }
  .nav-menu.open{display:flex}
  .nav-menu a{padding:12px 14px;font-size:1rem}
}

/* ---- reveal on load (finishes visible) ---- */
.reveal{opacity:0;transform:translateY(18px);animation:reveal .7s var(--ease) forwards}
.reveal.d1{animation-delay:.08s}.reveal.d2{animation-delay:.16s}
.reveal.d3{animation-delay:.24s}.reveal.d4{animation-delay:.32s}
@keyframes reveal{to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){
  .reveal{animation:none;opacity:1;transform:none}
  html{scroll-behavior:auto}
  .spark path{animation:none!important}
}

/* ---- HERO ---- */
.hero{position:relative;padding:clamp(56px,9vw,104px) 0 clamp(40px,6vw,72px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);
  font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--violet-2);
  background:var(--violet-soft);border:1px solid var(--line-2);
  padding:6px 13px;border-radius:999px;margin-bottom:22px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px var(--green-soft)}
.hero h1{max-width:16ch}
.hero h1 em{font-style:normal;color:var(--violet-2);position:relative}
.hero-lead{font-size:clamp(1.05rem,1.7vw,1.22rem);color:var(--muted);max-width:56ch;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}

.btn{
  display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.97rem;
  padding:13px 22px;border-radius:11px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s,border-color .2s;
}
.btn-primary{background:var(--violet);color:#fff;box-shadow:0 10px 30px -12px var(--violet)}
.btn-primary:hover{background:var(--violet-2);transform:translateY(-2px)}
.btn-ghost{border-color:var(--line-2);color:var(--text);background:var(--surface)}
.btn-ghost:hover{border-color:var(--violet-2);transform:translateY(-2px)}

/* KPI strip */
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:46px}
.kpi{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;position:relative;overflow:hidden;
}
.kpi::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(var(--violet),var(--green))}
.kpi .n{font-family:var(--mono);font-size:1.75rem;font-weight:600;letter-spacing:-.02em;display:flex;align-items:baseline;gap:7px}
.kpi .n .up{font-size:.85rem;color:var(--green);font-family:var(--sans)}
.kpi .l{color:var(--muted);font-size:.9rem;margin-top:2px}
@media(max-width:640px){.kpis{grid-template-columns:1fr}}

/* hero sparkline decoration */
.spark{width:100%;height:auto;margin-top:14px;display:block}
.spark path.line{
  stroke-dasharray:1;stroke-dashoffset:1;
  animation:draw 1.6s var(--ease) .3s forwards;
  vector-effect:non-scaling-stroke;
}
@keyframes draw{to{stroke-dashoffset:0}}

/* ---- section headings ---- */
.sec{padding:clamp(46px,7vw,80px) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:30px;flex-wrap:wrap}
.sec-head .k{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--green);margin-bottom:8px}
.sec-head h2{margin:0}
.sec-head .more{color:var(--violet-2);font-weight:600;font-size:.95rem;white-space:nowrap}
.sec-head .more:hover{text-decoration:underline}

/* ---- rubriques (categories) ---- */
.rubriques{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.rubrique{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;transition:transform .25s var(--ease),border-color .25s,background .25s;
  display:flex;flex-direction:column;gap:8px;position:relative;
}
.rubrique:hover{transform:translateY(-4px);border-color:var(--line-2);background:var(--surface-2)}
.rubrique .ic{width:42px;height:42px;border-radius:11px;background:var(--violet-soft);border:1px solid var(--line-2);
  display:grid;place-items:center;color:var(--violet-2);margin-bottom:4px}
.rubrique h3{font-size:1.08rem;margin:0}
.rubrique p{color:var(--muted);font-size:.9rem;margin:0}
.rubrique .cnt{font-family:var(--mono);font-size:.78rem;color:var(--muted-2);margin-top:auto}

/* ---- featured (à la une) ---- */
.featured{display:grid;grid-template-columns:1.4fr 1fr;gap:18px}
@media(max-width:860px){.featured{grid-template-columns:1fr}}

/* ---- card (DRY) ---- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s var(--ease),border-color .25s;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-2)}
.card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);position:relative}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.tag{
  align-self:flex-start;font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;
  color:var(--violet-2);background:var(--violet-soft);border:1px solid var(--line-2);
  padding:4px 10px;border-radius:999px;text-transform:uppercase;
}
.card h3{font-size:1.12rem;margin:0;line-height:1.32}
.card:hover h3{color:#fff}
.card .ex{color:var(--muted);font-size:.92rem;margin:0;flex:1}
.card .meta{display:flex;align-items:center;gap:10px;font-size:.8rem;color:var(--muted-2);font-family:var(--mono);margin-top:4px}
.card .meta .rt{color:var(--green)}

/* big featured card variant */
.card.big .thumb{aspect-ratio:16/10}
.card.big h3{font-size:clamp(1.3rem,2.4vw,1.8rem)}
.card.big .ex{font-size:1rem}

/* grid of posts */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}

/* ---- filters / search ---- */
.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:26px}
.searchbox{display:flex;flex:1;min-width:230px;background:var(--surface);border:1px solid var(--line);border-radius:11px;overflow:hidden}
.searchbox input{flex:1;background:transparent;border:0;color:var(--text);padding:12px 16px;font-size:.95rem;font-family:var(--sans)}
.searchbox input::placeholder{color:var(--muted-2)}
.searchbox button{background:var(--violet);border:0;color:#fff;padding:0 18px;cursor:pointer;font-weight:600}
.searchbox button:hover{background:var(--violet-2)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  font-size:.83rem;color:var(--muted);background:var(--surface);border:1px solid var(--line);
  padding:7px 14px;border-radius:999px;transition:all .2s;
}
.chip:hover{color:var(--text);border-color:var(--line-2)}
.chip.active{background:var(--violet);color:#fff;border-color:var(--violet)}

/* ---- pagination ---- */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:48px;flex-wrap:wrap}
.pagination .page-numbers{
  min-width:42px;text-align:center;padding:10px 14px;border-radius:10px;
  background:var(--surface);border:1px solid var(--line);color:var(--muted);font-size:.9rem;transition:all .2s;
}
.pagination .page-numbers:hover{color:var(--text);border-color:var(--line-2)}
.pagination .current{background:var(--violet);color:#fff;border-color:var(--violet);font-weight:600}

/* ============================================================
   SINGLE ARTICLE
   ============================================================ */
.article{max-width:760px;margin-inline:auto;padding-block:clamp(34px,5vw,56px)}
.breadcrumb{font-family:var(--mono);font-size:.78rem;color:var(--muted-2);margin-bottom:22px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--violet-2)}
.breadcrumb .sep{color:var(--line-2)}
.article-head .tag{margin-bottom:16px}
.article-head h1{margin:0 0 18px}
.article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:.9rem;padding-bottom:24px;border-bottom:1px solid var(--line)}
.article-meta .av{width:38px;height:38px;border-radius:50%;object-fit:cover;border:1px solid var(--line-2)}
.article-meta .who b{color:var(--text);font-weight:600}
.article-meta .dot{color:var(--line-2)}
.article-meta .rt{font-family:var(--mono);color:var(--green);font-size:.82rem}
.article-hero{margin:26px 0 8px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9}
.article-hero img{width:100%;height:100%;object-fit:cover}

/* content typography */
.content{font-size:1.07rem;line-height:1.78}
.content>*{margin-bottom:1.15em}
.content h2{margin-top:1.7em;font-size:1.6rem;scroll-margin-top:84px;padding-top:.2em}
.content h3{margin-top:1.3em;font-size:1.25rem;color:var(--text)}
.content a{color:var(--violet-2);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-2)}
.content a:hover{text-decoration-color:var(--violet-2)}
.content ul,.content ol{padding-left:1.3em}
.content li{margin-bottom:.5em}
.content li::marker{color:var(--violet-2)}
.content strong{color:#fff}
.content img{border-radius:var(--radius-sm);border:1px solid var(--line);margin-block:1.4em}
.content blockquote{
  margin:1.5em 0;padding:14px 22px;border-left:3px solid var(--violet);
  background:var(--violet-soft);border-radius:0 10px 10px 0;color:var(--text);
}
.content blockquote p:last-child{margin-bottom:0}
.content code{font-family:var(--mono);font-size:.88em;background:var(--surface-2);border:1px solid var(--line);padding:2px 6px;border-radius:6px}
.content pre{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px;overflow:auto}
.content pre code{background:none;border:0;padding:0}
.content table{width:100%;border-collapse:collapse;font-size:.95rem;margin-block:1.6em;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.content th{background:var(--surface-2);color:var(--text);text-align:left;padding:12px 16px;font-weight:600;border-bottom:1px solid var(--line)}
.content td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--muted)}
.content tr:last-child td{border-bottom:0}
.content tr:nth-child(even) td{background:rgba(255,255,255,.012)}

/* TOC / sommaire */
.sommaire{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 24px;margin:6px 0 2em;
}
.sommaire>strong{display:block;font-size:.78rem;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--violet-2);margin-bottom:12px}
.sommaire ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.sommaire li{margin:0;counter-increment:toc}
.sommaire a{color:var(--muted);font-size:.94rem;display:flex;gap:10px;align-items:baseline}
.sommaire a::before{content:counter(toc,decimal-leading-zero);font-family:var(--mono);font-size:.74rem;color:var(--violet-2)}
.sommaire a:hover{color:var(--text)}
.sommaire ul{counter-reset:toc}

/* author box */
.author-box{
  display:flex;gap:18px;align-items:flex-start;margin-top:50px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;
}
.author-box .av{width:72px;height:72px;border-radius:50%;object-fit:cover;border:2px solid var(--line-2);flex:0 0 auto}
.author-box .who{font-size:.74rem;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--green);margin-bottom:6px}
.author-box h4{margin:0 0 8px;font-size:1.2rem}
.author-box p{color:var(--muted);font-size:.92rem;margin:0 0 10px}
.author-box .author-link{color:var(--violet-2);font-weight:600;font-size:.9rem}
.author-box .author-link:hover{text-decoration:underline}
@media(max-width:560px){.author-box{flex-direction:column;text-align:center;align-items:center}}

/* related */
.related{margin-top:60px}
.related h2{font-size:1.4rem;margin-bottom:20px}

/* ---- FAQ ---- */
.faq{margin-top:54px}
.faq h2{font-size:1.5rem;margin-bottom:18px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:4px 20px;margin-bottom:10px}
.faq summary{cursor:pointer;list-style:none;font-weight:600;padding:16px 0;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--violet-2);font-size:1.4rem;font-weight:400;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);padding-bottom:18px;margin:0}

/* ---- CTA band ---- */
.cta-band{
  background:linear-gradient(120deg,var(--surface),var(--surface-2));
  border:1px solid var(--line-2);border-radius:22px;padding:clamp(30px,5vw,52px);
  text-align:center;position:relative;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at 50% 0%,var(--violet-soft),transparent 70%)}
.cta-band>*{position:relative}
.cta-band h2{margin-bottom:12px}
.cta-band p{color:var(--muted);max-width:54ch;margin-inline:auto;margin-bottom:24px}

/* ---- page (static) ---- */
.page-body{max-width:760px;margin-inline:auto;padding-block:clamp(34px,5vw,56px)}
.page-body h1{margin-bottom:24px}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{border-top:1px solid var(--line);margin-top:clamp(60px,9vw,110px);background:#0a0911}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;padding-block:clamp(40px,6vw,64px)}
@media(max-width:860px){.footer-top{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer-top{grid-template-columns:1fr}}
.footer-col h4{font-size:.78rem;font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2);margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{color:var(--muted);font-size:.93rem;transition:color .2s}
.footer-col a:hover{color:var(--violet-2)}
.footer-brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:1.15rem;margin-bottom:14px}
.footer-brand .mark{width:30px;height:30px}
.footer-about{color:var(--muted);font-size:.93rem;max-width:42ch}
.footer-bottom{border-top:1px solid var(--line);padding-block:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.85rem;color:var(--muted-2)}
.footer-bottom a{color:var(--muted-2)}
.footer-bottom a:hover{color:var(--muted)}

/* utility */
.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}
.no-thumb{display:grid;place-items:center;background:
  linear-gradient(135deg,var(--surface-2),var(--surface)),
  repeating-linear-gradient(45deg,transparent,transparent 14px,var(--line) 14px,var(--line) 15px);
  color:var(--muted-2)}
.no-thumb svg{width:46px;height:46px;opacity:.5}