/**
 * Little Social - Sign-In Screen
 * First-run instance login, OAuth callback progress, and auth errors.
 */

.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6) var(--space-4);
  background-color: var(--surface-bg);
  overflow-y: auto;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  padding: var(--space-6);
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.auth-card[hidden] {
  display: none;
}

.auth-card .brand-header {
  margin-bottom: 0;
}

.auth-heading {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.auth-title {
  font-size: var(--text-md);
  font-weight: var(--font-bold);
  letter-spacing: -0.01em;
}

.auth-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.auth-form .instance-input-group input {
  flex: 1;
  min-width: 0;
}

.auth-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--text-secondary);
}

.auth-form .btn[disabled] {
  opacity: 0.6;
  cursor: progress;
}

.auth-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-danger);
  background-color: var(--color-danger-bg);
  border: 1px solid var(--color-danger);
  border-radius: var(--radius-sm);
}

.auth-note {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.auth-pending {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}