/* Tela de login — minimalista, centralizada */
.auth-shell {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: var(--space-4);
}
.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}
.auth-logo {
  display: flex; align-items: center; gap: var(--space-2);
  font-weight: 700; font-size: var(--fs-lg);
  margin-bottom: var(--space-6);
}
.auth-logo .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--color-accent); }
.auth-card h1 { font-size: var(--fs-lg); margin-bottom: var(--space-1); }
.auth-card .subtitle { color: var(--color-text-secondary); font-size: var(--fs-sm); margin-bottom: var(--space-6); }
.auth-card .btn { width: 100%; }