/* Validéo — styles communs de la landing page et du guide.
   Même identité que l'application : verre dépoli sombre, dégradé cyan → indigo, Sora + IBM Plex. */
:root{
  --bg:#070a12; --bg-2:#0b1020;
  --glass:rgba(20,26,40,.55); --glass-strong:rgba(18,23,36,.9); --edge:rgba(255,255,255,.09); --hl:var(--soft);
  --fg:#e8ecf4; --muted:#9aa5b8; --dim:#6b7588; --line:var(--soft);
  --accent:#22d3ee; --accent-2:#818cf8; --accent-deep:#0e9ab5; --indigo:#4f46e5; --accent-soft:rgba(34,211,238,.13);
  --ok:#4ade80; --warn:#fbbf24; --bad:#f87171;
  --f-display:"Sora","Segoe UI",system-ui,sans-serif;
  --f-body:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --blur:blur(20px) saturate(170%);
  --shadow:0 1px 1px rgba(0,0,0,.3),0 18px 50px -14px rgba(0,0,0,.7);
  --text-2:#c9d1de; --soft:rgba(255,255,255,.06); --soft-2:rgba(255,255,255,.14); --nav-bg:rgba(7,10,18,.72); --on-accent:#04161b;
  color-scheme:dark;
}
/* Thème clair : choisi par la personne, ou suivi du système */
@media (prefers-color-scheme: light){ :root:not([data-theme="dark"]){ --bg:#eef1f6; --bg-2:#e6eaf2; --glass:rgba(255,255,255,.66); --glass-strong:rgba(255,255,255,.94); --edge:rgba(255,255,255,.9); --hl:rgba(255,255,255,.85);
    --fg:#0f172a; --muted:#475569; --dim:#64748b; --line:rgba(15,23,42,.1);
    --accent:#0e7490; --accent-2:#4f46e5; --accent-deep:#0e7490; --accent-soft:rgba(14,116,144,.12); --ok:#15803d; --warn:#b45309; --bad:#c81e1e;
    --shadow:0 1px 1px rgba(15,23,42,.04),0 18px 44px -18px rgba(15,23,42,.22);
    --text-2:#334155; --soft:rgba(15,23,42,.05); --soft-2:rgba(15,23,42,.14); --nav-bg:rgba(238,241,246,.82); --on-accent:#ffffff;
    color-scheme:light; } }
:root[data-theme="light"]{ --bg:#eef1f6; --bg-2:#e6eaf2; --glass:rgba(255,255,255,.66); --glass-strong:rgba(255,255,255,.94); --edge:rgba(255,255,255,.9); --hl:rgba(255,255,255,.85);
    --fg:#0f172a; --muted:#475569; --dim:#64748b; --line:rgba(15,23,42,.1);
    --accent:#0e7490; --accent-2:#4f46e5; --accent-deep:#0e7490; --accent-soft:rgba(14,116,144,.12); --ok:#15803d; --warn:#b45309; --bad:#c81e1e;
    --shadow:0 1px 1px rgba(15,23,42,.04),0 18px 44px -18px rgba(15,23,42,.22);
    --text-2:#334155; --soft:rgba(15,23,42,.05); --soft-2:rgba(15,23,42,.14); --nav-bg:rgba(238,241,246,.82); --on-accent:#ffffff;
    color-scheme:light; }
:root[data-theme="dark"]{ color-scheme:dark; }
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background-color:var(--bg);color:var(--fg);font:16px/1.6 var(--f-body);-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(60vmax 40vmax at 50% -10%,rgba(34,211,238,.14),transparent 60%),radial-gradient(45vmax 40vmax at 105% 20%,rgba(99,102,241,.16),transparent 60%),radial-gradient(50vmax 40vmax at -10% 70%,rgba(168,85,247,.10),transparent 60%);
  background-attachment:fixed}
img{max-width:100%;display:block}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--f-display);margin:0;letter-spacing:-.02em;text-wrap:balance;line-height:1.12}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding-inline:20px}
.mono{font-family:var(--f-mono)}
.grad{background:linear-gradient(100deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* Verre */
.glass{background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border:1px solid var(--edge);box-shadow:var(--shadow),inset 0 1px 0 var(--hl)}

/* Navigation */
.topnav{position:sticky;top:0;z-index:30;padding-top:env(safe-area-inset-top,0px);background:var(--nav-bg);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border-bottom:1px solid var(--line)}
.topnav .wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none;font:700 19px var(--f-display);letter-spacing:-.02em}
.logo img{width:30px;height:30px;border-radius:9px;box-shadow:0 6px 16px -4px rgba(34,211,238,.5)}
.links{display:flex;gap:22px;font-size:14.5px}
.links a{color:var(--muted);text-decoration:none}
.links a:hover{color:var(--fg)}
.nav-cta{margin-left:auto;display:flex;gap:8px;align-items:center}
@media (max-width:860px){.links{display:none}}

/* Boutons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font:600 15px var(--f-body);text-decoration:none;color:var(--fg);border:1px solid var(--line);background:var(--soft);transition:transform .15s,box-shadow .2s,border-color .2s;white-space:nowrap;cursor:pointer}
.btn:hover{border-color:var(--muted);transform:translateY(-1px)}
.btn.primary{background:linear-gradient(135deg,var(--accent),#6d8cf6);color:var(--on-accent);border-color:transparent;box-shadow:0 10px 30px -10px rgba(34,211,238,.7)}
.btn.primary:hover{box-shadow:0 14px 36px -10px rgba(34,211,238,.85)}
.btn.sm{padding:8px 14px;font-size:14px;border-radius:10px}

/* Pastilles et titres de section */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font:600 12px var(--f-body);letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;font-size:13px;color:var(--muted)}
.badge i{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.section{padding-block:96px}
.section-head{max-width:680px;margin:0 auto 48px;text-align:center;display:flex;flex-direction:column;gap:14px;align-items:center}
.section-head h2{font-size:clamp(28px,3.6vw,40px);font-weight:700}
.section-head p{color:var(--muted);font-size:17px}

/* Cartes */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media (max-width:900px){.cards{grid-template-columns:minmax(0,1fr)}}
.card{border-radius:18px;padding:24px;display:flex;flex-direction:column;gap:10px}
.card h3{font-size:17px;font-weight:600}
.card p{color:var(--muted);font-size:15px}
.ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(99,102,241,.18));border:1px solid var(--edge);color:var(--accent)}
.ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* Cadre de capture d'écran */
.shot{border-radius:16px;padding:8px;position:relative}
.shot img{border-radius:10px;width:100%;height:auto}
.shot .bar{display:flex;gap:6px;padding:4px 6px 10px}
.shot .bar i{width:10px;height:10px;border-radius:50%;background:var(--soft-2)}

.footer{border-top:1px solid var(--line);padding-block:32px calc(32px + env(safe-area-inset-bottom,0px));color:var(--dim);font-size:14px}
.footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer a{color:var(--muted);text-decoration:none;margin-left:18px}
.footer a:hover{color:var(--fg)}

/* Bouton de thème */
.theme-btn{gap:6px}
.theme-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
@media (max-width:560px){.theme-btn span{display:none}}