:root{
  --bg:#0b0e13; --surface:#111622; --surface-2:#0f141e;
  --text:#e6e8ee; --muted:#a7afc0; --ring: 0 0 0 2px rgba(124,92,255,.45), 0 0 0 6px rgba(124,92,255,.15);
  --shadow: 0 18px 50px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{height:100%}
body.login-page{
  margin:0; font-family: system-ui,-apple-system,Segoe UI,Roboto,Arial,Helvetica,"Noto Sans";
  background:
    radial-gradient(1200px 800px at 20% -10%, rgba(124,92,255,.10), transparent 60%),
    radial-gradient(1000px 700px at 100% 0%, rgba(110,231,255,.08), transparent 60%),
    var(--bg);
  color:var(--text); display:grid; place-items:center;
}

.login-container{ width:min(420px, 92vw); }
.login-card{
  background: var(--surface);
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px; padding:1.2rem 1.2rem 1.4rem;
  box-shadow: var(--shadow);
}
.login-title{ margin:.2rem 0; font-size:1.6rem; letter-spacing:.02em; }
.login-sub{ margin:0 0 1rem; color:var(--muted); }
.login-label{ display:block; margin:.6rem 0 .25rem; color:#cfd6e6; }
.login-input{
  width:100%; padding:.75rem .9rem; border-radius:12px; outline:none;
  border:1px solid rgba(255,255,255,.12); background:#0e1420; color:#e9eefc;
}
.login-input:focus{ box-shadow: var(--ring); }
.login-btn{
  width:100%; margin-top:1rem; padding:.85rem 1rem; border:none; border-radius:12px; cursor:pointer;
  color:#fff; background: linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08), var(--shadow);
}
.login-btn:hover{ box-shadow: 0 24px 70px rgba(0,0,0,.55); transform: translateY(-1px); }
.login-error{
  background: rgba(255,72,72,.12); border:1px solid rgba(255,72,72,.25);
  color:#ffdede; padding:.6rem .75rem; border-radius:10px; margin:.5rem 0 .5rem;
}