/* DEFS3 — Site vitrine V10 : structure bandeau V06 + pavés V05 + forms + footer légal */
:root{
  --bg:#0b1220;
  --text:#e8eefc;
  --muted:#b8c4e6;
  --line:rgba(232,238,252,.12);
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --headerH: 78px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 600px at 10% 10%, rgba(167,184,255,.18), transparent 55%),
              radial-gradient(900px 500px at 90% 0%, rgba(255,255,255,.10), transparent 60%),
              linear-gradient(180deg, var(--bg), #070b14 70%);
  line-height:1.55;
}

a{color:inherit; text-decoration:none}
a:hover{opacity:.92}
.container{max-width:1100px; margin:0 auto; padding:0 20px}

/* Fixed header with bandeau */
.header{
  position:fixed; top:0; left:0; right:0;
  z-index:60;
  border-bottom:1px solid var(--line);
}
.header__bandeau{
  position:absolute; inset:0;
  background-image: url('assets/bandeau.jpg');
  background-size: cover;
  background-position: center;
  filter: saturate(1.05) contrast(1.02);
  opacity: .35;
}
.header::before{
  content:"";
  position:absolute; inset:0;
  background: rgba(7,11,20,.75);
  backdrop-filter: blur(10px);
}
.header__inner{
  position:relative;
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:12px 0;
  min-height: var(--headerH);
}
.header--compact{}

.brand{display:flex; align-items:center; gap:12px; min-width: 260px}
.brand__logo{height:44px; width:auto}
.brand__text{font-weight:600; color:var(--muted); font-size:14px}

.nav{display:flex; gap:16px; align-items:center}
.nav a{font-weight:500; color:var(--muted); font-size:14px}
.nav a:hover{color:var(--text)}
.nav__cta{padding:10px 12px; border:1px solid var(--line); border-radius:999px; color:var(--text)}
.nav__toggle{
  display:none;
  padding:10px 12px;
  background:transparent; color:var(--text);
  border:1px solid var(--line); border-radius:999px;
}

/* Offset for fixed header */
main{padding-top: var(--headerH);}

.section{padding:46px 0}
.section--alt{
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,0));
  border-top:1px solid rgba(255,255,255,.04);
  border-bottom:1px solid rgba(255,255,255,.04);
}
.section--image{padding:34px 0}
.section--tight{padding:30px 0 18px}
.page{min-height: calc(100vh - var(--headerH));}

.bandeau-section img{width:100%; display:block; border-bottom:1px solid rgba(255,255,255,.06);}

.card{
  background: linear-gradient(180deg, rgba(17,28,51,.95), rgba(17,28,51,.70));
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}
.card--sub{
  background: rgba(17,28,51,.45);
  box-shadow:none;
}
.card--accent{
  background: linear-gradient(180deg, rgba(17,28,51,.98), rgba(17,28,51,.78));
}
.card__title{margin:0 0 10px; font-size:18px}
.card__cta{display:grid; gap:10px; margin-top:14px}

h1{font-size:34px; line-height:1.1; margin:0 0 12px}
.h1--page{font-size:34px; line-height:1.15; margin:0 0 14px}
h2{margin:0 0 14px; font-size:26px}
h3{margin:0 0 10px; font-size:18px}
h4{margin:16px 0 8px; font-size:14px; color:var(--muted); text-transform:uppercase; letter-spacing:.08em}

.eyebrow{color:var(--muted); font-weight:600; letter-spacing:.02em; margin:0 0 10px}
.lead{color:var(--muted); font-size:16px; margin:0 0 14px; max-width:70ch}

.actions{display:flex; gap:12px; flex-wrap:wrap; margin:14px 0 14px}
.badges{display:flex; flex-wrap:wrap; gap:10px; margin-top:6px}
.badges span{
  font-size:13px; color:var(--muted);
  border:1px solid var(--line);
  padding:8px 10px; border-radius:999px;
  background: rgba(17,28,51,.45);
}

.grid{display:grid; gap:14px}
.grid--2{grid-template-columns: repeat(2, minmax(0,1fr))}
.stack{display:grid; gap:14px}

.panel{
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:16px;
  background: rgba(17,28,51,.35);
}
.panel p{margin:0; color:var(--muted)}

.bullets{margin:0; padding-left:18px}
.bullets li{margin:7px 0; color:var(--muted)}
.checklist{list-style:none; padding:0; margin:0}
.checklist li{
  position:relative;
  padding-left:26px;
  color:var(--muted);
  margin:10px 0;
}
.checklist li::before{
  content:"✓";
  position:absolute;
  left:0; top:0;
  color: var(--text);
}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 14px;
  border-radius:12px;
  border:1px solid var(--line);
  font-weight:600;
  font-size:14px;
  cursor:pointer;
}
.btn--primary{
  background: linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.06));
  border-color: rgba(255,255,255,.22);
}
.btn--ghost{background: transparent}
.btn--full{width:100%}

.muted{color:var(--muted)}
.small{font-size:12px}

.image-card img{
  width:100%;
  height:auto;
  display:block;
  border-radius: calc(var(--radius) - 6px);
}

/* Synthese grid */
.synthese{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap:14px;
  align-items:stretch;
}

/* Contact */
.contact{display:grid; grid-template-columns: 1fr 1fr; gap:14px; align-items:start}
.contact__name{margin:0; font-weight:700; font-size:18px}
.contact__links{display:grid; gap:10px; margin-top:14px}

.form{display:grid; gap:10px}
label{display:grid; gap:6px; font-weight:600; font-size:13px; color:var(--muted)}
input,textarea{
  width:100%;
  padding:12px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background: rgba(7,11,20,.45);
  color:var(--text);
  outline:none;
}
input:focus, textarea:focus{border-color: rgba(255,255,255,.28)}
textarea{resize:vertical; min-height:110px}

/* Footer */
.footer{padding:22px 0; border-top:1px solid var(--line); background: rgba(7,11,20,.45)}
.footer__inner{display:flex; flex-wrap:wrap; gap:10px; justify-content:space-between; align-items:center}
.footer__links{display:flex; gap:10px; align-items:center}

/* Responsive */
@media (max-width: 980px){
  :root{--headerH: 72px}
  h1{font-size:30px}
  .synthese{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .grid--2{grid-template-columns:1fr}
  .nav{display:none}
  .nav__toggle{display:inline-flex}
  .nav.is-open{
    display:flex;
    position:absolute;
    top: calc(var(--headerH) - 6px);
    right: 0;
    flex-direction:column;
    background: rgba(7,11,20,.92);
    border:1px solid var(--line);
    border-radius: 16px;
    padding:12px;
    width: min(360px, calc(100vw - 40px));
  }
}