/* Global box-sizing for predictable sizing */
*, *::before, *::after {
    box-sizing: border-box;
}

h2 {
    text-align: center;
    /* Fluid font size between 20px and 24px */
    font-size: clamp(20px, 3vw, 24px);
    color: #333;
    margin-bottom: 20px;
}

/* Form Styling */
.info {
    width: 60%;
    max-width: 900px; /* optional max-width */
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 0 auto; /* center horizontally */
}

/* Responsive Form Layout */
.row1,
.row2,
.row3 {
    display: grid;
    gap: 15px;
}

.row2,
.row3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

label {
    font-weight: bold;
    display: block;
    margin-bottom: 6px;
}

input,
textarea,
select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    /* Fluid font size between 14px and 16px */
    font-size: clamp(14px, 1.5vw, 16px);
}

/* Table styling */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th,
table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
    /* Fluid font size between 10px and 14px */
    font-size: clamp(10px, 1vw, 14px);
}

table th {
    background-color: #007bff;
    color: white;
    font-weight: bold;
}

table tr:nth-child(even) {
    background-color: #f2f2f2;
}

table tr:hover {
    background-color: #ddd;
}

.download-btn {
    display: inline-block;
    padding: 10px 15px;
    background-color: #28a745;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 15px;
    /* Fluid font size between 12px and 16px */
    font-size: clamp(12px, 1.5vw, 16px);
}

.total-table {
    width: 35%;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .info {
        padding: 15px;
        width: 80%;
    }

    .row2,
    .row3 {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .invoice-table th,
    .invoice-table td {
        font-size: 12px;
        padding: 8px;
    }
}

@media (max-width: 768px) {
    .info {
        width: 90%;
    }
    .row1,
    .row2,
    .row3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .table-wrapper {
        overflow-x: auto;
    }

    table {
        min-width: 600px;
    }
}

@media (max-width: 480px) {
    body {
        max-width: 100%;
        padding: 10px;
    }

    .info {
        padding: 10px;
        width: 100%;
    }

    table th,
    table td {
        font-size: 10px;
        padding: 6px;
    }
}

@media (max-width: 360px) {
    h2 {
        font-size: 20px;
        margin-bottom: 15px;
    }

    .info {
        width: 100%;
        padding: 8px;
        gap: 10px;
    }

    input,
    textarea,
    select {
        font-size: 14px;
        padding: 8px;
    }

    table th,
    table td {
        font-size: 8px;
        padding: 4px;
    }

    .total-table {
        width: 100%;
    }

    .download-btn {
        padding: 8px 12px;
        font-size: 14px;
    }
}