:root{
  --bg:#0d1117;
  --card:#161b22;
  --border:#30363d;
  --text:#c9d1d9;
  --muted:#8b949e;
  --accent:#C41E3A;
  --accent-dark:#8B1538;
  --green:#8B1538;
  --green-hover:#A91B3C;
  --err:#f85149;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.45;min-height:100vh}
/* Layout de login (card centrada). Scope a .login-body para no afectar /directorio y /enlaces. */
body.login-body{
  display:flex;align-items:center;justify-content:center;padding:24px;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(196,30,58,.18), transparent 60%),
    radial-gradient(1000px 500px at 100% 120%, rgba(139,21,56,.10), transparent 60%),
    var(--bg);
}
.auth-card{
  width:100%;max-width:400px;background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:28px 26px;display:flex;flex-direction:column;gap:14px;
  box-shadow:0 20px 60px rgba(0,0,0,.6), 0 0 0 1px rgba(255,255,255,.02) inset;
}
.brand{font-size:13px;color:var(--accent);font-weight:700;letter-spacing:.4px;text-transform:uppercase}
.subtitle{font-size:12px;color:var(--muted);margin-top:-10px;letter-spacing:.3px}
.node-badge{
  display:inline-flex;align-items:center;gap:8px;padding:5px 10px;border-radius:999px;
  background:rgba(139,21,56,.2);border:1px solid #8B153855;
  color:#f0f6fc;font-size:12px;font-weight:600;align-self:flex-start;margin-top:2px
}
.node-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.node-badge .sub{color:var(--muted);font-weight:500}
h1{margin:6px 0 2px;font-size:20px;color:#f0f6fc;font-weight:600}
label{display:flex;flex-direction:column;gap:6px}
label > span{font-size:12.5px;color:var(--muted)}
input{
  width:100%;padding:11px 13px;border-radius:8px;
  background:#0d1117;border:1px solid var(--border);color:var(--text);
  outline:none;transition:border-color .15s, box-shadow .15s;
  font-size:14px;font-family:inherit;
}
input:hover{border-color:#4a5460}
input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(196,30,58,.18)}
button[type="submit"]{
  margin-top:8px;padding:11px 14px;border-radius:8px;border:1px solid rgba(139,21,56,.6);
  background:var(--green);color:#fff;font-weight:600;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  transition:background .15s, transform .05s;
  font-size:14px;
}
button[type="submit"]:hover{background:var(--green-hover)}
button[type="submit"]:active{transform:translateY(1px)}
button[type="submit"] .arrow{display:inline-block;transition:transform .18s}
button[type="submit"]:hover .arrow{transform:translateX(2px)}
.err{
  background:rgba(248,81,73,.08);border:1px solid rgba(248,81,73,.45);
  color:#ffa198;padding:8px 12px;border-radius:8px;font-size:13px;text-align:center
}
.foot{text-align:center;color:var(--muted);font-size:11px;margin-top:6px}
@media (max-width:420px){
  .auth-card{padding:22px 18px}
  h1{font-size:18px}
}