:root{
  --bg:#0e1420; --panel:#131722; --panel-2:#0d111a;
  --text:#e6e8eb; --muted:#9aa4b2; --border:rgba(255,255,255,.06);
  --brand:#2962ff; --brand-2:#1e53e5; --danger:#ff4d4f;
  --ring:rgba(41,98,255,.45);
  --shadow:0 10px 30px rgba(0,0,0,.45), inset 0 0 0 1px var(--border);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 800px at 80% -10%, #1b2a44 0%, transparent 70%),
    radial-gradient(900px 600px at -10% 120%, #1a2340 0%, transparent 70%),
    linear-gradient(#0c111b, var(--bg));
  min-height:100%;
  display:grid; place-items:center;
}
.grid-overlay{
  position:fixed; inset:0; pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:60px 60px;
  mask-image: radial-gradient(60% 60% at 50% 50%, #000 60%, transparent 100%);
  opacity:.35;
}
.card{
  width:min(420px, 92vw);
  background:linear-gradient(180deg, var(--panel), var(--panel-2));
  border-radius:20px; box-shadow:var(--shadow);
  padding:28px; position:relative; overflow:hidden;
}
.card::before{
  content:""; position:absolute; inset:-1px; border-radius:20px;
  background:linear-gradient(120deg, rgba(41,98,255,.15), transparent 35%, transparent 65%, rgba(41,98,255,.12));
  z-index:0;
}
.content{position:relative; z-index:1}
.brand{display:flex; align-items:center; gap:10px; margin-bottom:16px}
.logo{
  width:28px; height:28px; border-radius:8px;
  background:conic-gradient(from 210deg, var(--brand), var(--brand-2), var(--brand));
  box-shadow:0 6px 16px rgba(41,98,255,.45), 0 0 0 1px var(--border) inset;
}
h1{margin:0; font-size:20px; letter-spacing:.3px}
label{display:block; font-size:13px; color:var(--muted); margin:14px 0 6px}
.input{
  width:100%; background:#0b1220; color:var(--text);
  border:1px solid var(--border); border-radius:12px;
  padding:12px 14px; outline:none;
  transition:border-color .15s, box-shadow .15s, background .15s;
}
.input:focus{border-color:var(--brand); box-shadow:0 0 0 4px var(--ring); background:#0a101b}
.pw-wrap{position:relative}
.pw-toggle{
  position:absolute; right:10px; top:50%; transform:translateY(-50%);
  background:transparent; border:0; color:var(--muted); cursor:pointer; padding:6px;
}
.btn{
  width:100%; margin-top:14px;
  background:linear-gradient(180deg, var(--brand), var(--brand-2));
  color:#fff; border:none; border-radius:14px; padding:12px 16px;
  font-weight:600; letter-spacing:.2px; cursor:pointer;
  box-shadow:0 10px 18px rgba(41,98,255,.35), 0 0 0 1px rgba(255,255,255,.08) inset;
  transition:transform .06s ease, filter .2s ease;
}
.btn:hover{filter:brightness(1.05)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.65; cursor:not-allowed; filter:grayscale(10%)}
.error{display:none; color:var(--danger); font-size:13px; margin-top:8px}