:root {
  font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0f172a;
  color: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #1d4ed8, #0f172a 60%);
  padding: 1.5rem;
}

.card {
  width: min(400px, 100%);
  background: #fff;
  border-radius: 18px;
  padding: 2rem;
  box-shadow: 0 30px 80px rgba(15, 23, 42, 0.3);
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  text-align: center;
}

p.subtitle {
  margin: 0 0 1.5rem;
  color: #475569;
  text-align: center;
}

label {
  display: block;
  margin-bottom: 1rem;
}

label span {
  display: block;
  font-size: 0.9rem;
  color: #475569;
  margin-bottom: 0.35rem;
}

input {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid #cbd5f5;
  font-size: 1rem;
}

button {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: #2563eb;
  color: #fff;
  transition: opacity 0.15s ease;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.status {
  min-height: 1.5rem;
  font-size: 0.9rem;
  text-align: center;
  margin-top: 1rem;
  color: #dc2626;
}