/* =====================================================================
   synapsus.fr - feuille de styles commune du site
   Même identité que la brochure : bleu pétrole de l'application, rouge du
   logo, captures de la tablette dans un cadre d'écran, sections alternées.
   ===================================================================== */

:root{
  --bg:#f5f7fa;
  --surface:#ffffff;
  --ink:#132033;
  --ink-soft:#4a586c;
  --muted:#7d8899;
  --line:#dfe5ec;
  --brand:#15839d;
  --brand-deep:#0c4f5f;
  --brand-soft:#e2f2f5;
  --red:#e2231a;
  --hero-a:#0b2236;
  --hero-b:#0f3b5c;
  --nav-bg:rgba(245,247,250,.92);
  --shadow:0 1px 2px rgba(19,32,51,.06),0 12px 32px -16px rgba(19,32,51,.25);
  --font:"Plus Jakarta Sans",-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0d131b; --surface:#141c26; --ink:#e9eef4; --ink-soft:#b4c0cf; --muted:#8392a5;
    --line:#243243; --brand:#4cbfd6; --brand-deep:#a6e3ef; --brand-soft:#123039;
    --nav-bg:rgba(13,19,27,.92);
    --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px -16px rgba(0,0,0,.7);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0d131b; --surface:#141c26; --ink:#e9eef4; --ink-soft:#b4c0cf; --muted:#8392a5;
  --line:#243243; --brand:#4cbfd6; --brand-deep:#a6e3ef; --brand-soft:#123039;
  --nav-bg:rgba(13,19,27,.92);
  --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px -16px rgba(0,0,0,.7);
  color-scheme:dark;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--font)}
img{max-width:100%;display:block}
a{color:var(--brand)}
a:focus-visible,button:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:4px}
.wrap{max-width:1080px;margin:0 auto;padding-inline:20px}
h1,h2,h3{line-height:1.15;margin:0;letter-spacing:-.01em;text-wrap:balance}
h2{font-size:clamp(26px,4vw,38px);font-weight:800;margin-bottom:12px}
h3{font-size:19px;font-weight:700;margin-bottom:6px}
p{margin:0 0 14px}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand)}
.lede{font-size:18px;color:var(--ink-soft);max-width:62ch}

/* Barre de navigation */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--nav-bg);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:24px;min-height:64px;flex-wrap:wrap}
.nav .marque img{height:34px;width:auto}
.nav .marque .sombre{display:none}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .nav .marque .clair{display:none}
  :root:not([data-theme="light"]) .nav .marque .sombre{display:block}
}
:root[data-theme="dark"] .nav .marque .clair{display:none}
:root[data-theme="dark"] .nav .marque .sombre{display:block}
.nav ul{list-style:none;margin:0 0 0 auto;padding:0;display:flex;gap:4px;flex-wrap:wrap}
.nav li a{display:block;padding:8px 12px;border-radius:999px;color:var(--ink-soft);font-weight:600;font-size:15px;text-decoration:none}
.nav li a:hover{color:var(--ink);background:var(--brand-soft)}
.nav li a[aria-current="page"]{color:var(--brand);background:var(--brand-soft)}

/* En-tête de page (accueil) */
.hero{background:radial-gradient(1200px 500px at 85% -10%,rgba(21,131,157,.45),transparent 60%),linear-gradient(160deg,var(--hero-a),var(--hero-b));color:#fff;padding:64px 0 72px;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero .wrap > *{min-width:0}
.hero h1{font-size:clamp(34px,5.4vw,56px);font-weight:800;margin-bottom:18px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#7fd0f7,#b9a8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:#cfe2f1;font-size:18px;max-width:52ch}
img.logo-hero{width:230px;max-width:62%;height:auto;margin-bottom:26px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chip{font-size:13.5px;font-weight:600;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:#fff}
.hero-shots{position:relative;height:460px}
.hero-shots .phone{position:absolute;width:225px}
.hero-shots .phone:first-child{left:0;top:30px;transform:rotate(-5deg)}
.hero-shots .phone:last-child{right:0;top:0;transform:rotate(4deg)}

/* En-tête des autres pages */
.bandeau{background:linear-gradient(160deg,var(--hero-a),var(--hero-b));color:#fff;padding:52px 0 46px}
.bandeau .eyebrow{color:#7fd0f7}
.bandeau h1{font-size:clamp(30px,4.6vw,46px);font-weight:800;margin:6px 0 14px}
.bandeau p{color:#cfe2f1;font-size:18px;max-width:62ch;margin:0}

/* Captures de la tablette */
.phone{background:#05080c;border-radius:26px;padding:9px;box-shadow:0 20px 40px -18px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.06) inset}
.screen{--y:0;--h:1220;aspect-ratio:720/var(--h);max-width:100%;overflow:hidden;border-radius:18px;background:#000}
.screen img{width:100%;margin-top:calc(var(--y) * -100% / 720)}
figure{margin:0}
figcaption{font-size:13.5px;color:var(--muted);margin-top:10px;text-align:center;line-height:1.45}
.shots{display:flex;gap:18px;justify-content:center;align-items:flex-start;flex-wrap:wrap}
.shots figure{width:230px;flex:0 1 230px}

/* Sections */
section{padding:76px 0}
section.alt{background:var(--surface);border-block:1px solid var(--line)}
.head{margin-bottom:34px}
.head h1{font-size:clamp(30px,4.6vw,46px);font-weight:800;margin:6px 0 14px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-38px;position:relative}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 18px 14px;box-shadow:var(--shadow)}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{font-size:14px;color:var(--ink-soft)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split > *{min-width:0}
.split.rev > :first-child{order:2}
ul.ticks{list-style:none;padding:0;margin:0 0 14px}
ul.ticks li{position:relative;padding-left:28px;margin-bottom:9px;color:var(--ink-soft)}
ul.ticks li::before{content:"";position:absolute;left:0;top:.45em;width:16px;height:16px;border-radius:50%;background:var(--brand-soft);box-shadow:inset 0 0 0 5px var(--brand)}
ul.ticks b{color:var(--ink)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.grid2 > *,.grid3 > *{min-width:0}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px 20px 16px;box-shadow:var(--shadow)}
section.alt .card{background:var(--bg);box-shadow:none}
.card p{color:var(--ink-soft);font-size:15px;margin-bottom:8px}
.icon{width:40px;height:40px;border-radius:10px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:21px;margin-bottom:12px}
.note{font-size:13.5px;color:var(--muted);margin-top:18px}

/* Cartes-liens vers les autres pages */
a.carte{display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:transform .15s,border-color .15s}
a.carte:hover{transform:translateY(-2px);border-color:var(--brand)}
a.carte .suite{margin-top:auto;padding-top:6px;color:var(--brand);font-weight:700;font-size:15px}
@media (prefers-reduced-motion: reduce){a.carte{transition:none}a.carte:hover{transform:none}}

/* Intelligence artificielle (section sombre) */
.ai{background:linear-gradient(170deg,#0f1630,#1b1a3d 55%,#0f2a44);color:#e8ecff}
.ai .eyebrow{color:#b9a8ff}
.ai .lede{color:#c5cbe8}
.ai .card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12);box-shadow:none}
.ai .card p{color:#c5cbe8}
.ai .card h3{color:#fff}
.ai .principles{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:30px 0 40px}
.ai .principles > *{min-width:0}
.ai .principles .card{padding:16px}
.ai .principles b{display:block;color:#fff;font-size:15.5px;margin-bottom:4px}
.ai .principles span{font-size:14px;color:#c5cbe8}
.ai figcaption,.ai .note{color:#9aa3c7}
.ai-shots{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:42px}
.ai-shots figure{width:210px}
.badge{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:999px;margin-bottom:10px}
.b-learn{background:rgba(243,156,18,.18);color:#ffc35c}

/* Accès à distance (section bleue) */
.connect{background:linear-gradient(160deg,#06283d,#0c4f5f);color:#eaf6fd}
.connect .eyebrow{color:#7fd0f7}
.connect .lede{color:#c7e3f3}
.connect .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);box-shadow:none}
.connect .card h3{color:#fff}
.connect .card p{color:#c7e3f3}
.connect .note{color:#a9cfe6}
.flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:12px;align-items:center;margin:34px 0 36px;text-align:center}
.node{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:16px 12px}
.node b{display:block;color:#fff;font-size:16px}
.node span{font-size:13px;color:#a9cfe6}
.arrow{font-size:22px;color:#7fd0f7}
.status{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;background:rgba(243,156,18,.16);color:#ffc35c;padding:6px 12px;border-radius:999px;margin-top:6px}
.status::before{content:"";width:8px;height:8px;border-radius:50%;background:#ffc35c}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:26px}
.steps > *{min-width:0}
.steps div{counter-increment:s;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:14px 12px;font-size:13.5px;color:#c7e3f3}
.steps div::before{content:counter(s);display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#7fd0f7;color:#06283d;font-weight:800;font-size:13px;margin-bottom:8px}
.steps div.fait{border-color:rgba(127,208,247,.55)}
.steps div.fait::before{content:"✓"}
.steps b{display:block;color:#fff;font-size:14.5px;margin-bottom:2px}

/* Niveaux d'accès */
.tableau{overflow-x:auto}
table.levels{width:100%;border-collapse:collapse;font-size:15px}
table.levels th,table.levels td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}
table.levels th{font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
table.levels td:first-child{font-weight:700;white-space:nowrap}

/* Appel au contact */
.cta{text-align:center;padding:70px 0 80px}
.cta h2{margin-bottom:10px}
.cta p{color:var(--ink-soft);max-width:60ch;margin:0 auto 18px}
.bouton{display:inline-block;background:var(--brand);color:#fff;font-weight:700;padding:12px 22px;border-radius:999px;text-decoration:none}
:root[data-theme="dark"] .bouton{color:#06283d}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .bouton{color:#06283d}}
.bouton:hover{background:var(--brand-deep);color:var(--bg)}

/* Contact et mentions */
.adresse{font-size:clamp(22px,4vw,30px);font-weight:800;color:var(--brand);user-select:all;overflow-wrap:anywhere}
.texte{max-width:72ch}
.texte h2{font-size:22px;margin-top:34px}
.texte p,.texte li{color:var(--ink-soft)}
.a-completer{background:rgba(226,35,26,.12);color:var(--red);padding:0 4px;border-radius:4px}

/* Pied de page */
.pied{border-top:1px solid var(--line);padding:28px 0 40px;font-size:14px;color:var(--muted)}
.pied .wrap{display:flex;gap:16px 28px;flex-wrap:wrap;align-items:center}
.pied img{height:24px;width:auto}
.pied a{color:var(--ink-soft)}
.pied p{margin:0;flex-basis:100%;font-size:12.5px}

@media (max-width:900px){
  .hero .wrap,.split{grid-template-columns:1fr}
  .split.rev > :first-child{order:0}
  .hero-shots{height:400px;max-width:420px;margin:0 auto;width:100%}
  .hero-shots .phone{width:190px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid3{grid-template-columns:1fr 1fr}
  .ai .principles{grid-template-columns:1fr 1fr}
  .flow{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .arrow{transform:rotate(90deg)}
}
@media (max-width:600px){
  .grid3,.grid2,.ai .principles,.steps{grid-template-columns:1fr}
  .shots figure{flex-basis:160px}
  .hero-shots .phone{width:160px}
  .hero-shots{height:330px}
  section{padding:56px 0}
  .nav ul{margin-left:0}
  .nav li a{padding:6px 10px;font-size:14px}
}