body {
    font-family: system-ui, sans-serif;
    max-width: 480px;
    margin: 40px auto;
    padding: 0 16px;
    color: #222;
}

h1 {
    font-size: 1.3em;
}

label {
    display: block;
    margin-top: 16px;
    font-weight: 600;
}

input {
    width: 100%;
    padding: 10px;
    font-size: 1em;
    margin-top: 4px;
    box-sizing: border-box;
}

button {
    margin-top: 20px;
    padding: 12px 20px;
    font-size: 1em;
    cursor: pointer;
}

.resultado {
    margin-top: 24px;
    padding: 16px;
    background: #f0f0f0;
    border-radius: 8px;
    text-align: center;
}

.codigo {
    font-size: 2em;
    font-weight: bold;
    letter-spacing: 2px;
    cursor: pointer;
}

.copy-hint {
    margin: 0.25rem 0 0;
    font-size: 0.85em;
    color: #555;
}

.aviso {
    font-size: 0.85em;
    color: #a00;
    margin-top: 24px;
}


.auth-container {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgb(0 0 0 / 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

input {
  padding: 0.6rem 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 1rem;
}

button {
  padding: 0.7rem;
  border: 0;
  border-radius: 8px;
  background: #2563eb;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
}

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

.error { color: #dc2626; min-height: 1.2em; margin: 0; font-size: 0.9rem; }