* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.card {
  background: #1e293b; border: 1px solid #334155; border-radius: 10px;
  padding: 28px; width: min(380px, 92vw);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.card h1 { margin: 0 0 6px; font-size: 22px; }
.card .sub { color: #94a3b8; margin: 0 0 22px; font-size: 13px; }

.field { margin-bottom: 14px; }
label { display: block; margin-bottom: 5px; color: #cbd5e1; font-size: 12px; font-weight: 500; }
input {
  width: 100%; padding: 10px 12px; background: #0f172a; color: #f1f5f9;
  border: 1px solid #475569; border-radius: 6px; font-size: 14px; font-family: inherit;
}
input:focus { outline: none; border-color: #6366f1; }
button.primary {
  width: 100%; padding: 11px; background: #6366f1; color: #fff; border: none;
  border-radius: 6px; cursor: pointer; font-size: 14px; font-weight: 500;
  font-family: inherit;
}
button.primary:hover { background: #4f46e5; }
button.primary:disabled { opacity: 0.5; cursor: not-allowed; }

.error {
  background: #7f1d1d; color: #fecaca; padding: 9px 12px; border-radius: 6px;
  font-size: 13px; margin-bottom: 14px;
}
.notice {
  background: #1e3a8a; color: #93c5fd; padding: 9px 12px; border-radius: 6px;
  font-size: 13px; margin-bottom: 14px;
}
.muted { color: #94a3b8; font-size: 12px; text-align: center; margin-top: 16px; }