/* General Styles */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #007bff;
    color: white;
    padding: 20px;
    text-align: center;
}

h1 {
    margin: 0;
}

p {
    font-size: 1.1em;
}

form {
    max-width: 600px;
    margin: 20px auto;
    background-color: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
}

select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
}

/* Matrix Section */
#matrix-container {
    max-width: 90%;
    margin: 20px auto;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px;
    text-align: center;
    border: 1px solid #ccc;
}

th {
    background-color: #f7f7f7;
    color: #333;
}

.vat-cell {
    cursor: pointer;
    background-color: #f9f9f9;
    transition: background-color 0.3s ease, transform 0.2s;
}

.vat-cell:hover {
    background-color: #e7f3fe;
    transform: scale(1.05);
}

.vat-cell.active {
    background-color: #cce4f7;
}

.vat-cell .cell-content {
    display: block;
    font-size: 0.9em;
    color: #555;
}

/* Comment Section */
#comment-section {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

textarea {
    width: 100%;
    height: 100px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
    margin-bottom: 15px;
}

button {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
}

button:hover {
    background-color: #0056b3;
}

/* Modal Styles */
.modal {
    display: none; 
    position: fixed;
    z-index: 1; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    padding-top: 60px;
}

.modal-content {
    background-color: #fff;
    margin: 5% auto;
    padding: 20px;
    border-radius: 8px;
    width: 80%;
    max-width: 600px;
    box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.1);
}

.close-btn {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close-btn:hover,
.close-btn:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.modal h3 {
    margin-top: 0;
}

.modal p {
    font-size: 1.1em;
    color: #333;
}

/* Responsive Design */
@media (max-width: 768px) {
    table {
        font-size: 0.9em;
    }

    #matrix-container {
        overflow-x: scroll;
    }

    #vat-matrix th, #vat-matrix td {
        padding: 8px;
    }

    form {
        padding: 15px;
    }
}