/* Checkbox: ขอบบาง, สี่เหลี่ยม, ข้อความเล็ก, checked เป็นสีน้ำเงิน */
.form-check-input[type="checkbox"] {
  width: 18px;
  height: 18px;
  border-radius: 0;
  border: 1px solid #666;
  background: #fff;
  margin-top: 0.2em;
  cursor: pointer;
  box-shadow: none;
  transition: border-color 0.2s, background-color 0.2s;
}

.form-check-input[type="checkbox"]:checked {
  background-color: #007bff;
  border-color: #007bff;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='10' viewBox='0 0 12 10' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 5L4 8L11 1' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 70% 70%;
}

.form-check-input[type="checkbox"]:focus {
  border-color: #007bff;
  outline: none;
  box-shadow: none;
}

.form-check-label {
  font-size: 0.95rem;
  margin-left: 0.5em;
  cursor: pointer;
  user-select: none;
}