body {
    font-family: "Microsoft JhengHei", sans-serif;
    background-color: #f6f7f9;
    margin: 0;
    padding: 24px;
}

.form-card {
    background-color: #fff;
    max-width: 800px;
    margin: 0 auto;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.form-title {
    font-size: 22px;
    font-weight: bold;
    color: #333;
    margin-bottom: 24px;
    border-left: 4px solid #007bff;
    padding-left: 12px;
}

.form-group {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
}

.form-row {
    display: flex;
    gap: 16px;
}

    .form-row .form-group {
        flex: 1;
    }

label {
    font-size: 14px;
    color: #333;
    margin-bottom: 6px;
}

.form-control {
    padding: 8px 12px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

.form-validation-summary {
    margin-bottom: 16px;
    color: #d9534f;
    font-size: 14px;
}

.text-danger {
    font-size: 12px;
    color: #d9534f;
    margin-top: 4px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.btn-submit {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
}

    .btn-submit:hover {
        background-color: #0056b3;
    }

.btn-cancel {
    background-color: #e9ecef;
    color: #333;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
}

    .btn-cancel:hover {
        background-color: #d6d8db;
    }

.activity-section {
    display: none;
    border-top: 1px solid #eee;
    padding-top: 16px;
    margin-top: 16px;
}