:root {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --danger: #f87171;
  --border: #334155;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1d4ed844, transparent),
    radial-gradient(900px 500px at 100% 0%, #0ea5e944, transparent),
    var(--bg);
}

.card {
  width: min(420px, 92vw);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 20px 50px rgba(0,0,0,.35);
}

h1 { margin: 0 0 8px; font-size: 1.35rem; }
.sub { margin: 0 0 16px; color: var(--muted); font-size: .95rem; }
.hint { margin-top: 16px; color: var(--muted); font-size: .85rem; }
.error {
  background: #7f1d1d55;
  border: 1px solid #ef4444;
  color: #fecaca;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 14px;
}
.success {
  background: #14532d55;
  border: 1px solid #22c55e;
  color: #bbf7d0;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 14px;
}

.scope-box {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1220;
}
.scope-title {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: .9rem;
}
.scope-display {
  margin: 0 0 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 1rem;
}
.scope-code {
  margin: 0;
  color: var(--muted);
  font-size: .8rem;
}
.scope-code code {
  color: var(--text);
}

label {
  display: block;
  margin-bottom: 12px;
  font-size: .9rem;
  color: var(--muted);
}

input[type=text], input[type=password], input[type=email], input[type=tel] {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
}

button {
  width: 100%;
  margin-top: 8px;
  padding: 11px 14px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #0f172a;
  font-weight: 600;
  cursor: pointer;
}
button:disabled {
  opacity: .6;
  cursor: not-allowed;
}