:root{--bg:#050a12;--fg:#eaf2ff;--muted:#8fa0bd;--line:rgba(120,160,255,.14);--c:#22d3ee;--p:#5b7cff;--ok:#34d399;--red:#fb7185;--amb:#fbbf24}
*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.5;min-height:100vh}
header{position:fixed;top:0;left:0;right:0;z-index:20;height:70px;background:rgba(8,14,26,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header .wrap{height:100%;display:flex;justify-content:space-between;align-items:center;padding:0 28px;gap:16px}
.logo{white-space:nowrap}
.logo{font-family:Georgia,"Times New Roman",serif;font-weight:900;font-size:24px;letter-spacing:-.02em;text-transform:uppercase;color:#fff;text-decoration:none}.logo b{color:var(--c)}
nav{display:flex;align-items:center;flex-wrap:nowrap;white-space:nowrap}nav a{color:var(--muted);text-decoration:none;margin-left:22px;font-size:14px}
nav a.btn{width:auto;margin-top:0;background:var(--c);color:#04212a;font-weight:700;padding:9px 16px;border-radius:999px}
.bgr{position:fixed;inset:0;z-index:0;pointer-events:none;background:radial-gradient(ellipse 60% 50% at 50% 40%,rgba(34,211,238,.07),transparent 70%)}
main{position:relative;z-index:1;max-width:460px;margin:0 auto;padding:120px 24px 60px}
.card{background:#0b1322;border:1px solid var(--line);border-radius:18px;padding:30px 30px 26px;box-shadow:0 30px 80px rgba(0,0,0,.5)}
h1{font-size:26px;letter-spacing:-.02em;margin:0 0 6px}
.sub{color:var(--muted);font-size:14px;margin:0 0 22px}
.plan{display:inline-flex;align-items:center;gap:8px;background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.35);color:var(--c);border-radius:999px;padding:5px 12px;font-size:13px;font-weight:700;margin-bottom:18px}
label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
input{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:10px;padding:12px 14px;color:var(--fg);font-size:15px;outline:0}
input:focus{border-color:rgba(34,211,238,.6)}
.btn{width:100%;margin-top:22px;border:0;border-radius:10px;background:var(--c);color:#04212a;font-weight:800;padding:13px;font-size:15px;cursor:pointer}
.btn:disabled{opacity:.6;cursor:wait}
.msg{margin-top:14px;font-size:14px;min-height:20px;border-radius:10px;padding:0}
.msg.err{color:var(--red);background:rgba(251,113,133,.1);border:1px solid rgba(251,113,133,.35);padding:10px 12px}
.msg.ok{color:var(--ok);background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.35);padding:10px 12px}
.links{margin-top:18px;font-size:14px;color:var(--muted);text-align:center}
.links a{color:var(--c);text-decoration:none}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin-top:16px}
.check input{width:auto;margin-top:3px}
.check a{color:var(--c)}
.fr{margin:22px auto 0;display:flex;align-items:center;justify-content:center;gap:10px;font-size:12px;color:var(--muted)}
.flag{display:inline-flex;width:20px;height:13px;border-radius:2px;overflow:hidden}.flag i{flex:1;display:block}.flag i:nth-child(1){background:#0055A4}.flag i:nth-child(2){background:#fff}.flag i:nth-child(3){background:#EF4135}
input.bad{border-color:var(--red)!important;box-shadow:0 0 0 3px rgba(251,113,133,.15)}
.ferr{color:var(--red);font-size:12px;margin-top:5px}
label .req{color:var(--red);margin-left:3px}
.btn2{display:inline-block;border:1px solid rgba(34,211,238,.5);color:var(--c);background:transparent;border-radius:10px;padding:10px 16px;font-weight:700;font-size:14px;cursor:pointer;text-decoration:none}
.btn2:disabled{opacity:.5;cursor:wait}

/* --- bande du haut : boutons + menu profil --- */
nav a.nbtn2{border:1px solid rgba(34,211,238,.5);color:var(--c);padding:8px 16px;border-radius:999px;font-weight:700}
nav .avw{position:relative;margin-left:22px}
nav .avatar{width:40px;height:40px;border-radius:50%;border:1px solid rgba(34,211,238,.5);background:rgba(34,211,238,.1);color:var(--c);display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0}
nav .avatar:hover,nav .avatar[aria-expanded="true"]{background:var(--c);color:#04212a}
nav .menu[hidden]{display:none}
nav .menu{position:absolute;right:0;top:50px;min-width:230px;background:#0b1322;border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:0 20px 60px rgba(0,0,0,.6);display:flex;flex-direction:column;white-space:nowrap}
nav .menu .who{font-size:12px;color:var(--muted);padding:6px 12px 8px;border-bottom:1px solid var(--line);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis}
nav .menu a{margin:0;padding:9px 12px;border-radius:8px;color:var(--fg);font-size:14px;display:block}
nav .menu a:hover{background:rgba(120,160,255,.1)}
nav .menu hr{border:0;border-top:1px solid var(--line);margin:4px 0}
nav .menu a.danger{color:var(--red)}

/* --- bande du haut en 3 parties : logo | centre (Comprendre + titres) | droite (connexion / compte) --- */
header .wrap{position:relative}
nav{flex:1;justify-content:flex-end}
nav .nc{position:absolute;left:50%;top:0;height:100%;transform:translateX(-50%);display:flex;align-items:center;white-space:nowrap}
nav .nc a{margin-left:26px}nav .nc a:hover{color:var(--fg)}
nav .nr{display:flex;align-items:center}
/* --- menu deroulant "Comprendre" --- */
nav .dd{position:relative}
nav .ddb{background:transparent;border:0;color:var(--muted);font-size:14px;cursor:pointer;padding:8px 0;font-family:inherit;display:flex;align-items:center;gap:4px}
nav .ddb i{font-style:normal;font-size:11px}
nav .ddb:hover,nav .ddb[aria-expanded="true"]{color:var(--fg)}
nav .ddm[hidden]{display:none}
nav .ddm{position:absolute;left:0;top:44px;min-width:290px;background:#0b1322;border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:0 20px 60px rgba(0,0,0,.6);display:flex;flex-direction:column;white-space:nowrap;z-index:30}
nav .ddm a{margin:0;padding:9px 12px;border-radius:8px;color:var(--fg);font-size:14px;display:block}
nav .ddm a:hover{background:rgba(120,160,255,.1)}
nav .ddm hr{border:0;border-top:1px solid var(--line);margin:4px 0}
nav .ddb .sm,nav .ddm .mob{display:none}
@media(max-width:1080px){nav .nc a{margin-left:16px}}
@media(max-width:900px){header .wrap{padding:0 14px}.logo{font-size:20px}
  nav .nc{position:static;transform:none;height:auto;margin-right:10px}nav .nc>a,nav .ddb .lg,nav .nr a.nbtn2{display:none}
  nav .ddb .sm,nav .ddm .mob,nav .ddm hr.mob{display:block}nav .ddm{left:auto;right:0}nav .nr a.btn{padding:8px 12px;font-size:13px;margin-left:8px}nav .avw{margin-left:8px}}