:root{
  --bg:#fff7ee;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --line:rgba(17,24,39,.10);
  --brand:#ff7a18;        /* soleil */
  --brand2:#2ab7ff;       /* mer */
  --shadow:0 10px 30px rgba(17,24,39,.08);
  --radius:18px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:linear-gradient(180deg, #fff7ee 0%, #ffffff 45%, #ffffff 100%);
}

/* --- layout pour footer en bas --- */
body{ display:flex; flex-direction:column; min-height:100vh; }
.site-main{ flex:1; width:min(1100px, 92vw); margin:0 auto; padding:18px 0 26px; }

.site-header{
  position:sticky; top:0; z-index:30;
  background:rgba(255,255,255,.78);
  border-bottom:1px solid var(--line);
  backdrop-filter: blur(10px);
}
.header-inner{
  width:min(1100px, 92vw);
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:12px 0;
}

.brand{ font-weight:900; text-decoration:none; color:var(--text); letter-spacing:-.02em; }
.tagline{ display:block; font-size:.92rem; color:var(--muted); margin-top:2px; }

.main-nav a{
  text-decoration:none;
  color:var(--text);
  padding:10px 10px;
  border-radius:10px;
}
.main-nav a:hover{ background:rgba(42,183,255,.10); }

.hamburger{ display:none; background:transparent; border:0; width:44px; height:44px; }
.hamburger span{ display:block; height:2px; background:var(--text); margin:7px 0; border-radius:2px; }

.section{ padding:18px 0; }
.flash{
  background:rgba(42,183,255,.12);
  border:1px solid rgba(42,183,255,.25);
  padding:12px 14px;
  border-radius:14px;
  margin:10px 0 6px;
}

.hero{
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  padding:38px 22px;
  background:#fff;
}
.hero.hero--img{
  position:relative;
  background:
    linear-gradient(135deg, rgba(255,250,243,.92), rgba(255,250,243,.72)),
    var(--hero) center/cover no-repeat;
}
.hero.hero--img::after{
  content:"";
  position:absolute; inset:0;
  background: radial-gradient(700px 300px at 20% 20%, rgba(255,255,255,.55), transparent 60%);
  pointer-events:none;
}
.hero-content{ position:relative; z-index:1; max-width:780px; }
.hero h1{ margin:0 0 10px; font-size: clamp(28px, 4vw, 44px); letter-spacing:-.02em; }
.hero p{ margin:0 0 18px; color:rgba(31,41,55,.82); font-size: 1.05rem; }

.cta-group{ display:flex; flex-wrap:wrap; gap:10px; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  padding:12px 16px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  text-decoration:none;
  cursor:pointer;
  box-shadow:0 6px 16px rgba(17,24,39,.06);
}
.btn:hover{ transform: translateY(-1px); }

.btn-primary{
  background: linear-gradient(135deg, var(--brand), #ffb21a);
  border:none;
  color:#1b1208;
}
.btn-secondary{
  background: linear-gradient(135deg, rgba(42,183,255,.18), rgba(255,122,24,.10));
  border:1px solid rgba(42,183,255,.28);
}

.card, .lesson-card, .account-box{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:16px;
}
.small-text{ color:var(--muted); }
.ok{ color:#0f766e; font-weight:700; }
.no{ color:#b45309; font-weight:700; }
.error{
  background:rgba(255,122,24,.12);
  border:1px solid rgba(255,122,24,.25);
  padding:12px 14px;
  border-radius:14px;
}

.img-coffre{
  width:min(180px, 45vw);
  height:auto;
  display:block;
  margin:10px 0 0;
  filter: drop-shadow(0 10px 18px rgba(17,24,39,.12));
}

/* footer en bas, discret */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(255,255,255,.78);
  backdrop-filter: blur(10px);
  padding:16px 0;
}
.site-footer .footer-inner{
  width:min(1100px, 92vw);
  margin:0 auto;
  color:var(--muted);
  font-size:.95rem;
}
.site-footer a{ color:var(--text); text-decoration: underline; }

/* responsive nav */
@media (max-width: 860px){
  .hamburger{ display:block; }
  .main-nav{
    position:absolute;
    right:4vw;
    top:64px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow);
    padding:10px;
    display:none;
    flex-direction:column;
    min-width:220px;
  }
  .main-nav.nav-open{ display:flex; }
  .main-nav a{ padding:10px 12px; }
}
/* ===== MENU HAMBURGER MOBILE ===== */
.burger{
  display:none;
  font-size:22px;
  background:none;
  border:0;
  cursor:pointer;
}

.mobileMenu{
  display:none;
  position:absolute;
  top:64px;
  right:16px;
  background:white;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:12px;
  z-index:999;
}

.mobileMenu a{
  display:block;
  padding:10px 12px;
  text-decoration:none;
  color:var(--text);
  font-weight:600;
}

.mobileMenu a:hover{
  background:rgba(15,23,42,.05);
  border-radius:10px;
}

@media (max-width: 960px){
  nav{ display:none; }
  .burger{ display:block; }
}