* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background: #f3f5f7;
  color: #111827;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 560px;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 12px 34px rgba(0,0,0,.08);
  padding: 34px;
}

h1 {
  margin: 0 0 12px;
  font-size: 28px;
}

p {
  line-height: 1.55;
}

label {
  display: block;
  font-weight: 700;
  margin: 22px 0 8px;
}

input[type="text"],
input[type="email"] {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  font-size: 16px;
}

button {
  margin-top: 22px;
  width: 100%;
  border: 0;
  border-radius: 12px;
  background: #0f3f96;
  color: #fff;
  padding: 14px 18px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: #0b3278;
}

.alert {
  padding: 12px 14px;
  border-radius: 12px;
  margin: 18px 0;
}

.alert.error {
  background: #fee2e2;
  color: #7f1d1d;
}

.alert.info {
  background: #e0ecff;
  color: #102a56;
}

.alert.success {
  background: #dcfce7;
  color: #14532d;
}

.masked {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 18px;
  background: #f3f4f6;
  border-radius: 12px;
  padding: 14px;
  margin: 18px 0;
}

.small {
  font-size: 13px;
  color: #6b7280;
}

.button-link {
  display: block;
  margin-top: 22px;
  width: 100%;
  border-radius: 12px;
  background: #0f3f96;
  color: #fff;
  padding: 14px 18px;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.button-link:hover {
  background: #0b3278;
}