* {
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    padding: 20px;
    margin: 0;
    background: #f8f8f8;

    display: flex;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 900px;
}

/* Headings */

h2, h3 {
    text-align: center;
}

/* Form */

form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.form-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

input, select, button {
    padding: 10px;
    font-size: 16px;
}

button {
    cursor: pointer;
}

/* Table */

.table-wrapper {
    width: 100%;
    overflow-x: auto;
}

table {
    border-collapse: collapse;
    margin-top: 20px;
    min-width: 700px;
    width: 100%;
    background: white;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}

th {
    background-color: #f4f4f4;
}

.color-cell {
    font-weight: bold;
    text-align: left;
}

/* Stock colors */

.stock-zero {
    color: #aaa;
}

.stock-low {
    color: orange;
    font-weight: bold;
}

.stock-good {
    color: green;
    font-weight: bold;
}

/* Mobile */

@media (max-width: 600px) {

    body {
        padding: 10px;
    }

    input, select, button {
        width: 100%;
    }

    table {
        min-width: 600px;
    }
}