#app-shell { display: flex; width: 100%; min-height: 100vh; }
#app-shell.hidden { display: none; }

.auth-screen {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sidebar-bg);
}

.auth-card {
  width: 100%;
  max-width: 340px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-logo {
  font-size: 18px;
  font-weight: 700;
  text-align: center;
}

.auth-title {
  font-size: 14px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 4px;
}

.auth-error {
  font-size: 12px;
  color: #B04A2E;
  background: var(--brown-light);
  border-radius: 6px;
  padding: 8px 10px;
  text-align: center;
}

.auth-submit { width: 100%; justify-content: center; margin-top: 4px; }