.container.auth-container {
  max-width: 400px;
  margin: var(--spacing-3xl) auto;
  padding: var(--padding-xl) var(--padding-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-normal);
  width: 100%;
  box-sizing: border-box;
}

.container.auth-container:hover {
  box-shadow: var(--shadow-lg);
}

.container.auth-container h2 {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bolder);
  color: var(--text-primary);
  letter-spacing: var(--letter-spacing-wider);
}

@media (max-width: 480px) {
  .container.auth-container {
    max-width: 90%;
  }

  .container.auth-container h2 {
    font-size: var(--font-size-xl);
  }
}

@media (min-width: 480px) and (max-width: 768px) {
  .container.auth-container {
    max-width: 90%;
  }
}