:root{
  --bg:#0f1220; --panel:#191d31; --panel2:#212642; --line:#2c3252;
  --text:#e8eaf2; --muted:#9aa1c0; --primary:#6366f1; --primary-h:#4f46e5;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:radial-gradient(1000px 560px at 30% -10%,#1c2140,var(--bg) 60%);
  color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.hidden{display:none!important}
.muted{color:var(--muted)}
.small{font-size:12px}

.auth-wrap{width:100%;max-width:440px}
.auth-card{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);
  border-radius:18px;padding:28px}
.brand{display:flex;gap:14px;align-items:center;margin-bottom:20px}
.logo{width:48px;height:48px;border-radius:12px;background:var(--primary);display:flex;align-items:center;
  justify-content:center;font-weight:800;font-size:18px;color:#fff}
.brand h1{margin:0;font-size:20px}
.brand p{margin:2px 0 0;font-size:12px}

.tabs{display:flex;gap:8px;background:var(--bg);padding:5px;border-radius:12px;margin-bottom:18px}
.tab{flex:1;border:none;background:transparent;color:var(--muted);padding:10px;border-radius:9px;
  cursor:pointer;font-weight:700;font-size:14px}
.tab.active{background:var(--primary);color:#fff}

.form{display:flex;flex-direction:column;gap:14px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
input{background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:10px;
  padding:11px 12px;font-size:14px;width:100%}
input:focus{outline:none;border-color:var(--primary)}

.btn{border:1px solid var(--line);background:var(--panel);color:var(--text);padding:12px;border-radius:10px;
  cursor:pointer;font-size:15px;font-weight:700}
.btn.primary{background:var(--primary);border-color:var(--primary)}
.btn.primary:hover{background:var(--primary-h)}
.btn:disabled{opacity:.6;cursor:not-allowed}

.msg{min-height:18px;font-size:13px}
.msg.err{color:#fca5a5}
.msg.ok{color:#86efac}
.foot{text-align:center;margin-top:16px;font-size:12px}
.foot code{background:var(--panel2);padding:2px 6px;border-radius:6px;color:var(--text)}

@media(max-width:420px){ .two{grid-template-columns:1fr} }