/* ============================================================
   ONN — Interface chaleureuse & humaine, inspirée du logo
   Palette logo : bleu profond / vert / jaune orangé
   ============================================================ */
:root{
  --bleu:#1d3fa0; --bleu-fonce:#152a6e; --bleu-ciel:#3d6fd6;
  --vert:#4c9f38; --vert-clair:#7bc24a; --vert-doux:#eaf6e4;
  --jaune:#f9a826; --orange:#f58220;
  --creme:#fdfbf6; --gris:#f4f6f9; --texte:#2b3445; --texte-doux:#5b6675;
  --rayon:20px;
  --ombre:0 10px 30px rgba(21,42,110,.10);
  --ombre-hover:0 16px 40px rgba(21,42,110,.16);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',Roboto,Arial,sans-serif;color:var(--texte);line-height:1.7;background:var(--creme)}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
h1,h2,h3,h4{line-height:1.3;color:var(--bleu-fonce);font-family:Georgia,'Times New Roman',serif;font-weight:700}
a{color:var(--bleu);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible{outline:3px solid var(--jaune);outline-offset:2px;border-radius:6px}
p{margin-bottom:12px}

/* ---------- Header ---------- */
header.site{position:sticky;top:0;z-index:100;background:linear-gradient(120deg,var(--bleu-fonce),var(--bleu) 70%);box-shadow:0 4px 18px rgba(10,20,60,.35)}
.navbar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.05rem}
.logo .badge{background:var(--jaune);color:var(--bleu-fonce);border-radius:50%;width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:.72rem;text-align:center;line-height:1.05;font-weight:800}
.logo-img{height:46px;background:#fff;border-radius:12px;padding:4px;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.logo .slogan{display:block;font-size:.68rem;font-weight:400;opacity:.85;font-style:italic}
nav.menu{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
nav.menu a{color:#fff;padding:9px 16px;border-radius:999px;font-size:.93rem;transition:background .2s}
nav.menu a:hover,nav.menu a.active{background:rgba(255,255,255,.18);text-decoration:none}
nav.menu a.active{background:var(--vert)}
.burger{display:none;background:none;border:none;color:#fff;font-size:1.6rem;cursor:pointer}

/* Motif humain (SVG) dans le header */
.humans-header{display:flex;align-items:flex-end;gap:2px;opacity:.9;margin-left:6px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;padding:78px 0 90px;
  background:linear-gradient(128deg,var(--bleu-fonce) 0%,var(--bleu) 46%,#2e7d46 115%)}
.hero::before{content:'';position:absolute;top:-90px;right:-70px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,rgba(249,168,38,.55),rgba(249,168,38,.12) 60%,transparent 72%)}
.hero::after{content:'';position:absolute;bottom:-120px;left:-80px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle at 60% 40%,rgba(123,194,74,.35),transparent 70%)}
.hero .wrap{position:relative;z-index:2}
.hero h1{color:#fff;font-size:2.35rem;margin-bottom:16px;text-shadow:0 2px 14px rgba(0,0,0,.18)}
.hero p.lead{font-size:1.14rem;max-width:800px;opacity:.96}
.hero .vision{margin-top:20px;font-style:italic;border-left:4px solid var(--jaune);padding-left:16px;font-size:1.04rem;background:rgba(255,255,255,.07);border-radius:0 12px 12px 0;padding-top:10px;padding-bottom:10px}
.hero .humans{position:absolute;right:4%;bottom:14px;z-index:1;opacity:.95}

/* Vague organique sous le hero */
.vague{display:block;width:100%;height:44px;margin-top:-1px}

/* ---------- Boutons ---------- */
.btn{display:inline-block;background:var(--jaune);color:var(--bleu-fonce);padding:13px 28px;border-radius:999px;font-weight:700;margin-top:26px;box-shadow:0 6px 18px rgba(249,168,38,.4);transition:transform .18s,box-shadow .18s}
.btn:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 10px 24px rgba(249,168,38,.5)}
.btn.secondary{background:#fff;color:var(--bleu-fonce);margin-left:10px;box-shadow:0 6px 18px rgba(255,255,255,.3)}

/* ---------- Sections ---------- */
section{padding:58px 0}
section.alt{background:var(--gris)}
.sec-title{text-align:center;margin-bottom:40px}
.sec-title .surtitle{display:inline-block;color:#fff;background:var(--vert);text-transform:uppercase;letter-spacing:2px;font-size:.74rem;font-weight:700;padding:5px 16px;border-radius:999px;margin-bottom:12px}
.sec-title h2{font-size:1.85rem;margin-top:6px}
.sec-title .bar{width:80px;height:5px;background:linear-gradient(90deg,var(--jaune),var(--orange));margin:16px auto 0;border-radius:999px}

/* ---------- Grilles & cartes ---------- */
.grid{display:grid;gap:24px}
.grid.c2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.grid.c3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid.c4{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card{position:relative;background:#fff;border-radius:var(--rayon);padding:28px 26px;box-shadow:var(--ombre);border:none;border-top:6px solid var(--vert);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--ombre-hover)}
.card.bleue{border-top-color:var(--bleu)}
.card.jaune{border-top-color:var(--jaune)}
.card.orange{border-top-color:var(--orange)}
.card h3{margin-bottom:10px;font-size:1.12rem}
.card ul{margin:10px 0 0 18px}
.card ul li{margin-bottom:6px}
@keyframes apparition{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.card{animation:apparition .5s ease both}
.card:nth-child(2){animation-delay:.06s}.card:nth-child(3){animation-delay:.12s}
.card:nth-child(4){animation-delay:.18s}.card:nth-child(5){animation-delay:.24s}.card:nth-child(6){animation-delay:.3s}
@media(prefers-reduced-motion:reduce){.card{animation:none}.btn:hover{transform:none}}

.puce{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:16px;background:var(--vert);color:#fff;font-weight:800;font-size:1.1rem;margin-bottom:14px;box-shadow:0 4px 10px rgba(76,159,56,.35)}
.puce.bleue{background:var(--bleu);box-shadow:0 4px 10px rgba(29,63,160,.3)}
.puce.jaune{background:var(--jaune);color:var(--bleu-fonce);box-shadow:0 4px 10px rgba(249,168,38,.4)}
.puce.orange{background:var(--orange);box-shadow:0 4px 10px rgba(245,130,32,.4)}

/* ---------- Bandeaux chiffres ---------- */
.chiffres{background:linear-gradient(120deg,var(--bleu-fonce),var(--bleu) 65%,#2e7d46 130%);color:#fff;position:relative;overflow:hidden}
.chiffres::before{content:'';position:absolute;top:-70px;right:-50px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(249,168,38,.4),transparent 70%)}
.chiffres .grid{text-align:center;position:relative}
.chiffres .num{font-size:2.4rem;font-weight:800;color:var(--jaune);font-family:Georgia,serif}
.chiffres .lbl{font-size:.95rem;opacity:.94}

/* ---------- Accordéons ---------- */
details.acc{background:#fff;border-radius:16px;margin-bottom:16px;box-shadow:var(--ombre);overflow:hidden;border:1px solid #eef1f6}
details.acc summary{cursor:pointer;padding:18px 22px;font-weight:700;color:var(--bleu-fonce);list-style:none;display:flex;align-items:center;gap:12px;font-family:Georgia,serif}
details.acc summary::before{content:'+';background:var(--vert);color:#fff;width:28px;height:28px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;font-weight:800;font-family:Arial}
details.acc[open] summary::before{content:'–';background:var(--orange)}
details.acc[open] summary{border-bottom:1px solid #eef1f6}
details.acc .corps{padding:4px 22px 22px}
details.acc h4{margin:18px 0 8px;color:#3a7d2c;font-family:Georgia,serif}
details.acc ul,details.acc ol{margin:8px 0 12px 20px}

/* ---------- Tableaux ---------- */
.table-resp{overflow-x:auto;margin:14px 0;border-radius:14px;box-shadow:var(--ombre)}
table.tb{width:100%;border-collapse:collapse;font-size:.93rem;background:#fff}
table.tb th{background:var(--bleu);color:#fff;padding:12px 14px;text-align:left;font-family:Georgia,serif}
table.tb td{padding:11px 14px;border-bottom:1px solid #e9edf4;vertical-align:top}
table.tb tr:nth-child(even) td{background:#f8faf6}

/* ---------- Citation / tags / notes ---------- */
.bloc-citation{background:var(--vert-doux);border-left:5px solid var(--vert);padding:18px 22px;border-radius:0 14px 14px 0;font-style:italic;margin:16px 0;color:#274a1d}
.note{font-size:.85rem;color:var(--texte-doux);margin-top:8px}
.tag{display:inline-block;background:var(--vert);color:#fff;border-radius:999px;padding:5px 15px;font-size:.8rem;font-weight:600;margin:3px 4px 3px 0}
.tag.bleue{background:var(--bleu)} .tag.jaune{background:var(--jaune);color:var(--bleu-fonce)} .tag.orange{background:var(--orange)}

/* ---------- Page hero interne ---------- */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(120deg,var(--bleu-fonce),var(--bleu) 60%,#2e7d46 140%);color:#fff;padding:52px 0 56px}
.page-hero::after{content:'';position:absolute;top:-70px;right:-50px;width:250px;height:250px;border-radius:50%;background:radial-gradient(circle at 40% 40%,rgba(249,168,38,.45),transparent 70%)}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{color:#fff;font-size:2rem}
.page-hero p{max-width:840px;opacity:.96;margin-top:8px}

/* ---------- Timeline ---------- */
.timeline{border-left:3px solid var(--vert-clair);margin-left:12px;padding-left:26px}
.timeline .etape{position:relative;margin-bottom:22px}
.timeline .etape::before{content:'';position:absolute;left:-37px;top:5px;width:15px;height:15px;border-radius:50%;background:var(--jaune);border:3px solid var(--vert)}

/* ---------- Footer ---------- */
footer.site{position:relative;background:linear-gradient(160deg,var(--bleu-fonce),#0e1c4e);color:#d7e3f8;padding:52px 0 22px;margin-top:0}
footer.site::before{content:'';position:absolute;top:-1px;left:0;right:0;height:30px;background:radial-gradient(circle at 10px -8px,transparent 14px,var(--creme) 15px);background-size:28px 30px;background-repeat:repeat-x}
footer.site h4{color:#fff;margin-bottom:12px;font-family:Georgia,serif}
footer.site .grid{gap:34px}
footer.site a{color:#d7e3f8}
footer.site a:hover{color:var(--jaune)}
.footer-logo{height:34px;background:#fff;border-radius:9px;padding:3px;vertical-align:middle;margin-right:6px}
.copy{text-align:center;border-top:1px solid rgba(255,255,255,.14);margin-top:32px;padding-top:18px;font-size:.85rem}

/* ---------- Mobile : navigation TOUJOURS visible ---------- */
@media(max-width:860px){
  .burger{display:none !important}
  .navbar{flex-wrap:wrap}
  nav.menu{display:flex !important;width:100%;overflow-x:auto;white-space:nowrap;gap:8px;padding:10px 0 12px;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
  nav.menu::-webkit-scrollbar{height:4px}
  nav.menu::-webkit-scrollbar-thumb{background:rgba(255,255,255,.35);border-radius:2px}
  nav.menu a{flex:0 0 auto;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:8px 16px;font-size:.88rem}
  nav.menu a:hover,nav.menu a.active{background:var(--vert);text-decoration:none}
  .hero{padding:50px 0 60px}
  .hero h1{font-size:1.55rem}
  .hero .humans{display:none}
  .logo{font-size:.92rem}
  .logo-img{height:38px}
  section{padding:42px 0}
  .card{padding:22px}
  .sec-title h2{font-size:1.45rem}
  .btn{padding:12px 22px}
}