#fet-expense-tracker {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
#fet-expense-form {
    display: flex;
    flex-direction: column;
}
#fet-expense-form label {
    margin: 10px 0 5px;
    font-weight: bold;
}
#fet-expense-form input,
#fet-expense-form select,
#fet-expense-form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}
#fet-expense-form textarea {
    resize: vertical;
    min-height: 100px;
}
#fet-expense-form button {
    padding: 12px 20px;
    background: #0073aa;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}
#fet-expense-form button:hover {
    background: #005177;
}
#fet-summary, #fet-records {
    margin-top: 30px;
}
#fet-summary h3, #fet-records h3 {
    margin-bottom: 10px;
}
#fet-summary table, #fet-records table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}
#fet-summary table th, #fet-records table th,
#fet-summary table td, #fet-records table td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}
#fet-summary table th, #fet-records table th {
    background: #f1f1f1;
    font-weight: bold;
}
#fet-records img {
    max-width: 100px;
    height: auto;
    border-radius: 4px;
}
@media (max-width: 600px) {
    #fet-expense-tracker {
        padding: 10px;
    }
    #fet-expense-form input,
    #fet-expense-form select,
    #fet-expense-form textarea {
        font-size: 14px;
    }
    #fet-expense-form button {
        font-size: 14px;
    }
}