.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  background: #fff;
  padding: 20px;
  max-width: 800px;
  margin: auto;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

label {
  font-weight: 500;
  margin-bottom: 4px;
}

input, select, textarea {
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: inherit;
}

textarea {
  resize: vertical;
}

.campo-invalido {
  border: 2px solid #e74c3c !important;
  background-color: #fff6f6;
}

button {
  padding: 10px;
  background-color: #0066cc;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 15px;
  cursor: pointer;
}

button:hover {
  background-color: #004999;
}