/* =========================================================
   ONI&FILS SARL — Feuille de style principale
   Site vitrine statique (HTML/CSS/JS), déployable sur tout hébergement mutualisé
   Charte issue du logo : bleu marine profond + or
   ========================================================= */

:root{
  --navy:#12315c;
  --navy-deep:#0a1e3c;
  --navy-light:#2a5a9e;
  --gold:#c1912f;
  --gold-light:#d9b155;
  --gold-dark:#9a7220;
  --ink:#10203a;
  --text:#4a5568;
  --muted:#7b8496;
  --line:#e4e9f1;
  --bg:#ffffff;
  --bg-alt:#f5f8fc;
  --bg-soft:#eef3fa;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 4px 22px rgba(18,49,92,.07);
  --shadow-lg:0 20px 55px rgba(10,30,60,.16);
  --maxw:1160px;
  --font:'Inter',system-ui,-apple-system,'Segoe UI','Helvetica Neue',Arial,sans-serif;
  --font-head:'Cormorant Garamond','Times New Roman',Georgia,serif;
  --grad-dark:linear-gradient(145deg,#081a35 0%,#12315c 55%,#1c4477 100%);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--text);font-size:16.5px;line-height:1.7;background:var(--bg);overflow-x:hidden}
img{max-width:100%;display:block}
ul{list-style:none}
a{color:var(--navy-light);text-decoration:none;transition:color .2s}
a:hover{color:var(--navy)}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;font-family:var(--font-head);font-weight:600;letter-spacing:.005em}
h1{font-size:clamp(2.3rem,4.6vw,3.5rem)}
h2{font-size:clamp(1.85rem,3.3vw,2.6rem)}
h3{font-size:1.3rem}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--alt{background:var(--bg-alt)}
.section--soft{background:var(--bg-soft)}
.section--dark{background:var(--grad-dark);color:#d8e2f0}
.section--dark h2,.section--dark h3{color:#fff}
.narrow{max-width:820px}
.center{text-align:center}

/* ---------- Titres de section ---------- */
.eyebrow{
  display:inline-block;font-family:var(--font);font-size:.76rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--gold-dark);margin-bottom:14px;
}
.section--dark .eyebrow{color:var(--gold-light)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto}
.section-head p{margin-top:16px;font-size:1.06rem}
.rule{width:64px;height:3px;background:var(--gold);border-radius:2px;margin:18px 0}
.center .rule{margin-left:auto;margin-right:auto}

/* ---------- Boutons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:999px;
  font-weight:600;font-size:.95rem;letter-spacing:.01em;border:1.5px solid transparent;
  cursor:pointer;transition:all .22s ease;white-space:nowrap;
}
.btn--gold{background:var(--gold);color:#fff;box-shadow:0 8px 20px rgba(193,145,47,.28)}
.btn--gold:hover{background:var(--gold-dark);color:#fff;transform:translateY(-2px)}
.btn--navy{background:var(--navy);color:#fff}
.btn--navy:hover{background:var(--navy-deep);color:#fff;transform:translateY(-2px)}
.btn--ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--navy);border-color:#fff}
.btn--outline{border-color:var(--navy);color:var(--navy)}
.btn--outline:hover{background:var(--navy);color:#fff}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.center .btn-row{justify-content:center}

/* ---------- En-tête ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:50px;width:auto}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-txt strong{font-family:var(--font-head);font-size:1.32rem;color:var(--navy);letter-spacing:.02em}
.brand-txt span{font-size:.64rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-dark);font-weight:600}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{color:var(--ink);font-size:.93rem;font-weight:500;position:relative;padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--gold);transition:width .25s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--navy);font-weight:600}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-cta .btn{padding:11px 22px;font-size:.88rem}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer}
.burger span{display:block;height:2px;background:var(--navy);margin:5px auto;width:24px;transition:.25s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--grad-dark);color:#dce5f2;overflow:hidden;padding:96px 0 104px}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.14;
  background:radial-gradient(circle at 78% 22%,rgba(193,145,47,.75),transparent 46%),
             radial-gradient(circle at 12% 84%,rgba(42,90,158,.9),transparent 52%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{color:#fff;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--gold-light)}
.hero .lede{font-size:1.12rem;color:#c9d6e8;max-width:56ch}
.hero .tagline{
  font-family:var(--font-head);font-size:1.18rem;color:var(--gold-light);
  margin-top:28px;padding-left:18px;border-left:3px solid var(--gold);
}
.hero-visual{display:flex;justify-content:center}
.hero-visual img{width:min(370px,100%);filter:drop-shadow(0 22px 44px rgba(0,0,0,.4))}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-tags span{
  font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;font-weight:600;
  padding:7px 15px;border:1px solid rgba(255,255,255,.28);border-radius:999px;color:#cfdcec;
}

/* ---------- Bandeau de page interne ---------- */
.page-hero{background:var(--grad-dark);color:#d5e0ef;padding:74px 0 66px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;opacity:.12;background:radial-gradient(circle at 85% 30%,rgba(193,145,47,.8),transparent 50%)}
.page-hero .container{position:relative;z-index:2;max-width:860px}
.page-hero h1{color:#fff}
.page-hero p{margin-top:16px;font-size:1.07rem;color:#c5d3e6}
.breadcrumb{font-size:.82rem;color:#9db1cc;margin-bottom:14px}
.breadcrumb a{color:#9db1cc}
.breadcrumb a:hover{color:var(--gold-light)}

/* ---------- Grilles & cartes ---------- */
.grid{display:grid;gap:26px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s;height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(193,145,47,.4)}
.card h3{margin-bottom:12px}
.card p{font-size:.97rem}
.card .ic{
  width:54px;height:54px;border-radius:14px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(135deg,rgba(18,49,92,.08),rgba(193,145,47,.16));color:var(--navy);
}
.card .ic svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card--soon{border-style:dashed;background:var(--bg-alt)}
.tag-soon{
  display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--gold-dark);background:rgba(193,145,47,.13);padding:4px 11px;border-radius:999px;margin-bottom:14px;
}
.card ul{margin-top:16px}
.card ul li{position:relative;padding-left:20px;font-size:.95rem;margin-bottom:7px}
.card ul li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--gold)}

/* valeurs */
.value{display:flex;gap:18px;align-items:flex-start}
.value .num{
  font-family:var(--font-head);font-size:1.5rem;color:var(--gold);flex:0 0 46px;height:46px;width:46px;
  display:grid;place-items:center;border:1.5px solid rgba(193,145,47,.4);border-radius:50%;
}
.value h3{font-size:1.12rem;margin-bottom:6px}
.value p{font-size:.95rem}

/* piliers mission */
.pillars{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;margin-top:34px}
.pillars .p{
  font-family:var(--font-head);font-size:1.35rem;color:var(--navy);background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:12px 30px;box-shadow:var(--shadow);
}
.pillars .arrow{color:var(--gold);font-size:1.3rem}

/* démarche numérotée */
.steps{counter-reset:s;display:grid;gap:18px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-left:3px solid var(--gold);
  border-radius:var(--radius-sm);padding:24px 28px 24px 78px;box-shadow:var(--shadow);
}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);position:absolute;left:26px;top:22px;
  font-family:var(--font-head);font-size:1.5rem;color:var(--gold);font-weight:600;
}
.step h3{font-size:1.12rem;margin-bottom:4px}
.step p{font-size:.96rem}

/* listes cochées */
.checks{display:grid;gap:12px}
.checks li{position:relative;padding-left:32px;font-size:1rem}
.checks li::before{
  content:"";position:absolute;left:0;top:7px;width:18px;height:18px;border-radius:50%;
  background:rgba(193,145,47,.16);box-shadow:inset 0 0 0 1px rgba(193,145,47,.45);
}
.checks li::after{content:"";position:absolute;left:6px;top:12px;width:6px;height:9px;border:2px solid var(--gold-dark);border-top:0;border-left:0;transform:rotate(40deg)}
.section--dark .checks li::after{border-color:var(--gold-light)}

/* deux colonnes texte + encart */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.split p+p{margin-top:16px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow-lg)}
.panel--dark{background:var(--grad-dark);color:#cddaea;border:0}
.panel--dark h3{color:#fff}
.panel .lbl{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-dark);font-weight:700}
.panel--dark .lbl{color:var(--gold-light)}
.quote{font-family:var(--font-head);font-size:1.5rem;line-height:1.45;color:var(--ink)}
.panel--dark .quote{color:#fff}

/* bandeau CTA */
.cta-band{background:var(--grad-dark);color:#d5e0ef;padding:70px 0;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;opacity:.16;background:radial-gradient(circle at 20% 50%,rgba(193,145,47,.7),transparent 45%)}
.cta-band .container{position:relative;z-index:2}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{max-width:62ch;color:#c5d3e6}

/* contact */
.contact-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:start}
.info-list{display:grid;gap:18px;margin-top:8px}
.info-item{display:flex;gap:16px;align-items:flex-start}
.info-item .ic{
  flex:0 0 44px;height:44px;width:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(18,49,92,.07);color:var(--navy);
}
.info-item .ic svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.info-item .k{font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600}
.info-item .v{font-size:1.04rem;color:var(--ink);font-weight:500}
.todo{color:var(--gold-dark);font-style:italic;font-weight:500}

form .field{margin-bottom:18px}
form label{display:block;font-size:.86rem;font-weight:600;color:var(--ink);margin-bottom:7px}
form input,form select,form textarea{
  width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-family:inherit;font-size:.97rem;color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s;
}
form input:focus,form select:focus,form textarea:focus{outline:0;border-color:var(--navy-light);box-shadow:0 0 0 3px rgba(42,90,158,.13)}
form textarea{min-height:150px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.consent{display:flex;gap:11px;align-items:flex-start;font-size:.87rem;color:var(--muted)}
.consent input{width:auto;margin-top:5px}
.form-note{font-size:.84rem;color:var(--muted);margin-top:14px}

/* pied de page */
.site-footer{background:var(--navy-deep);color:#9fb2ca;padding:64px 0 0;font-size:.93rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:46px}
.site-footer h4{color:#fff;font-family:var(--font);font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:18px}
.site-footer a{color:#9fb2ca}
.site-footer a:hover{color:var(--gold-light)}
.site-footer li{margin-bottom:9px}
.footer-logo img{height:86px;width:auto;margin-bottom:18px}
.footer-tag{font-family:var(--font-head);font-size:1.06rem;color:var(--gold-light);line-height:1.5}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:.84rem}

/* animations d'apparition */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .card:hover,.btn:hover{transform:none}
}

/* responsive */
@media (max-width:980px){
  /* blocs alternés : le texte repasse avant l'encadré */
  .split--flip>*:first-child{order:2}
  .split--flip>*:last-child{order:1}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-grid,.split,.contact-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1}
  .hero-visual img{width:min(280px,70%)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:760px){
  .burger{display:block}
  .nav-links{
    position:fixed;inset:78px 0 auto 0;background:#fff;flex-direction:column;align-items:flex-start;
    gap:0;padding:12px 24px 24px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);
    transform:translateY(-140%);transition:transform .3s ease;max-height:calc(100vh - 78px);overflow:auto;
  }
  .nav-links.open{transform:none}
  .nav-links a{width:100%;padding:13px 0;border-bottom:1px solid var(--line)}
  .nav-cta .btn{display:none}
  .section{padding:64px 0}
  .grid-2,.grid-3,.grid-4,.form-row{grid-template-columns:1fr}
  .hero{padding:64px 0 72px}
  .step{padding:22px 22px 22px 70px}
  .footer-grid{grid-template-columns:1fr}
}