.form-section {
    margin-bottom: 30px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #fff;
}
.form-title {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #007bff;
}
.form-label {
    font-weight: bold;
}
.form-container {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}
@media (min-width: 992px) {
    .form-column {
        padding: 0 15px;
    }
}
.is-invalid {
    border-color: #dc3545;
}
.invalid-feedback {
    display: none;
    color: #dc3545;
    font-size: 0.875em;
    margin-top: 0.25rem;
}
.is-invalid ~ .invalid-feedback {
    display: block;
}
.form-check-input.is-invalid ~ .form-check-label {
    color: #dc3545;
}
.date-input-container {
    position: relative;
}
.date-input-container input[type="date"] {
    position: relative;
    z-index: 1;
    cursor: pointer;
    width: 100%;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.date-input-container input[type="date"]::-webkit-calendar-picker-indicator {
    position: absolute;
    right: 0;
    top: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    cursor: pointer;
    opacity: 0;
}