body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #1f2933;
  background: #f5f7fa;
}

.tarjeta {
  max-width: 360px;
  margin: 12vh auto 0;
  padding: 24px;
  background: #fff;
  border: 1px solid #e1e5ea;
  border-radius: 8px;
}

.tarjeta.ancha {
  max-width: 640px;
}

.tarjeta h1 {
  margin: 0;
  color: #0b6e4f;
}

.tarjeta h2 {
  font-size: 1.1rem;
}

.sub {
  margin-top: 4px;
  color: #616e7c;
}

.tarjeta form label {
  display: block;
  margin-top: 12px;
  font-size: 0.9rem;
}

.tarjeta form input[type="text"],
.tarjeta form input[type="password"] {
  box-sizing: border-box;
  width: 100%;
  padding: 8px;
  border: 1px solid #cbd2d9;
  border-radius: 4px;
}

button {
  margin-top: 16px;
  padding: 8px 16px;
  color: #fff;
  background: #0b6e4f;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
}

.error {
  color: #b42318;
}

.acciones {
  display: flex;
  gap: 16px;
  align-items: center;
}

.acciones button {
  margin: 0;
}