:root{
  --primary:#dc2626;
  --primary-soft:#fee2e2;
  --bg:#f8fafc;
  --card:#ffffff;
  --border:#e5e7eb;
  --text:#0f172a;
  --muted:#6b7280;
  --radius:22px;
  --shadow:0 20px 50px rgba(15,23,42,.12);
}

*{margin:0;padding:0;box-sizing:border-box}

body{
  min-height:100vh;
  display:grid;
  place-items:center;
  font-family:system-ui,-apple-system,"Segoe UI",sans-serif;
  background:
    radial-gradient(circle at 15% 10%, #fee2e2 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, #e0e7ff 0%, transparent 45%),
    linear-gradient(#f8fafc,#f8fafc);
  color:var(--text);
}

.login-card{
  width:min(420px,92%);
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:1.7rem 1.5rem 1.9rem;
}

.logo{
  width:54px;height:54px;
  margin:0 auto .55rem;
  border-radius:18px;
  background:linear-gradient(135deg,#ef4444,#b91c1c);
  display:grid;place-items:center;
  font-size:1.5rem;font-weight:800;
  color:#fff;
}

.brand{
  text-align:center;
  margin-bottom:1.2rem;
}

.brand h1{font-size:1.2rem}

.brand span{
  font-size:.72rem;
  letter-spacing:.18em;
  color:var(--muted);
}

.field{margin-top:.9rem}

label{
  display:block;
  font-size:.75rem;
  color:var(--muted);
  margin-bottom:.35rem;
}

input{
  width:100%;
  border-radius:999px;
  border:1px solid var(--border);
  background:#fff;
  padding:.65rem .9rem;
  color:var(--text);
  outline:none;
}

input:focus{
  border-color:#f87171;
  box-shadow:0 0 0 3px rgba(248,113,113,.18);
}

.btn{
  margin-top:1.25rem;
  width:100%;
  border:none;
  border-radius:999px;
  padding:.7rem 1rem;
  font-weight:700;
  font-size:.9rem;
  cursor:pointer;
  color:#fff;
  background:linear-gradient(135deg,#ef4444,#b91c1c);
  box-shadow:0 12px 26px rgba(239,68,68,.35);
}

.error{
  margin-top:1rem;
  padding:.55rem .8rem;
  border-radius:14px;
  font-size:.8rem;
  background:#fee2e2;
  border:1px solid #fecaca;
  color:#b91c1c;
}