.auth-body {
  background: var(--mt-bg);
  min-height: 100vh;
}

.auth-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 2rem 1rem;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--mt-text);
}

.auth-brand i {
  color: var(--mt-primary);
  font-size: 1.5rem;
}

.auth-card {
  background: var(--mt-surface);
  border: 1px solid var(--mt-border);
  border-radius: var(--mt-radius);
  padding: 2.25rem 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 24px 48px -28px rgba(15, 23, 42, 0.2);
}

.auth-card h1 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.auth-card .auth-subtitle {
  color: var(--mt-text-muted);
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
}

.auth-card label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.auth-demo-hint {
  background: var(--mt-primary-soft);
  border-radius: 0.6rem;
  padding: 0.85rem 1rem;
  font-size: 0.78rem;
  color: var(--mt-text);
  margin-top: 1.25rem;
  line-height: 1.6;
}

.auth-demo-hint strong {
  color: var(--mt-primary);
}

.auth-back-link {
  color: var(--mt-text-muted);
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.auth-back-link:hover {
  color: var(--mt-primary);
}