/* Placeholder para imagens de fundo */
.hero-placeholder {
  width: 100%;
  height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
  font-weight: bold;
}

/* Placeholder para cards */
.card-placeholder {
  background: #f8f9fa;
  border: 2px dashed #dee2e6;
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  color: #6c757d;
}