*{box-sizing:border-box}
:root{
  --bg:#0a0f18;--panel:#0f1724;--border:#1c2740;--text:#e6eef7;--muted:#9fb0c6;
  --brand:#4fc3f7;--brand-d:#2a6fd1;--accent:#1a5fbf;--link:#79b8ff;--link-h:#a5d6ff;
  --shadow:0 8px 30px rgba(0,0,0,.35);
  --bg-grad1:#0e1a2b;--bg-grad2:#0b1630;--header-bg:rgba(15,23,36,.85);--footer-bg:rgba(15,23,36,.85);--button-bg:#141b24;--thumb-start:#173052;
}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Segoe UI Emoji";background:radial-gradient(1000px 500px at 20% -10%, var(--bg-grad1) 0%, var(--bg) 60%),radial-gradient(800px 400px at 120% 10%, var(--bg-grad2) 0%, var(--bg) 60%);color:var(--text)}
a{color:var(--link);text-decoration:none}
a:hover{color:var(--link-h);text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:20px}
.site-header{background:var(--header-bg);backdrop-filter:blur(6px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.site-header .bar{display:flex;align-items:center;justify-content:space-between}
.site-header h1{margin:0;font-size:18px;color:var(--brand)}
.site-header .brand{display:flex;align-items:center;gap:10px}
.site-header .brand img{height:22px;width:auto;filter:drop-shadow(0 2px 6px rgba(0,0,0,.35))}
.site-header nav{display:flex;gap:14px;font-size:14px}
.site-header a.active{color:var(--brand)}
.hero{padding:40px 0 24px}
.hero-card{background:linear-gradient(180deg, rgba(41,71,132,.35), rgba(16,24,38,.5));border:1px solid var(--border);border-radius:14px;padding:24px;box-shadow:var(--shadow)}
.hero h2{margin:0 0 8px;font-size:28px}
.hero p{margin:0;color:var(--muted)}
.cta-row{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:var(--button-bg);color:var(--text);box-shadow:0 4px 14px rgba(0,0,0,.25)}
.btn.primary{background:linear-gradient(180deg, var(--accent), var(--brand-d));border-color:#275fb8}
.btn[aria-disabled="true"]{opacity:.6;pointer-events:none}
.features{padding:20px 0}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.feature-item{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px}
.feature-item h4{margin:0 0 6px;font-size:16px;color:var(--brand)}
.feature-item p{margin:0;color:var(--muted)}
.app-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:14px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:16/9;background:linear-gradient(135deg,var(--thumb-start),var(--panel));border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px}
.card .thumb img{height:64px;width:auto;opacity:.95;filter:drop-shadow(0 4px 8px rgba(0,0,0,.35))}
.card .body{padding:14px}
.card .body h3{margin:0 0 6px}
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.gallery figure{margin:0;background:var(--panel);border:1px solid var(--border);border-radius:10px;overflow:hidden}
.gallery img{display:block;width:100%;height:auto}
.gallery figcaption{padding:8px;color:var(--muted);font-size:12px}
.site-footer{border-top:1px solid var(--border);background:var(--footer-bg);margin-top:28px}
.site-footer .small{font-size:12px;color:var(--muted)}
.muted{color:var(--muted)}
@media (max-width:640px){
  .container{padding:12px}
  .site-header .bar{flex-wrap:wrap}
  .site-header nav{gap:10px;flex-wrap:wrap;row-gap:6px;margin-top:6px}
  .hero h2{font-size:24px}
  .cta-row .btn{flex:1 1 100%;text-align:center}
}
.app-logo{height:60px;width:auto;display:block;margin:8px 0}

/* Lightbox pour agrandir les captures */
.gallery img{cursor:zoom-in}
.site-lightbox{position:fixed;inset:0;background:rgba(0,0,0,.82);display:none;align-items:center;justify-content:center;padding:2rem;z-index:1000}
.site-lightbox.open{display:flex}
.site-lightbox img{max-width:min(92vw,1200px);max-height:92vh;border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.35)}
.site-lightbox .close-hint{position:absolute;top:.75rem;right:1rem;color:#fff;font-size:.9rem;opacity:.85}

/* Thème clair */
:root[data-theme="light"]{
  --bg:#f7f9fc;--panel:#ffffff;--border:#d9e0ef;--text:#1b2430;--muted:#5b6b82;
  --brand:#2a6fd1;--brand-d:#174ea6;--accent:#79b8ff;--link:#1a5fbf;--link-h:#174ea6;
  --bg-grad1:#cfe8ff;--bg-grad2:#e2f0ff;--header-bg:rgba(255,255,255,.85);--footer-bg:rgba(255,255,255,.85);--button-bg:#ffffff;--thumb-start:#eaf2ff;
}

/* Bouton de bascule dans la barre */
.theme-toggle{margin-left:8px;padding:8px 10px;border:1px solid var(--border);border-radius:6px;background:var(--panel);color:var(--text);cursor:pointer}
.theme-toggle:hover{filter:brightness(1.05)}