styles.css

body {
    font-family: Arial, sans-serif;
    background-color: #000;
    color: #fff;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: #111;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

h1, h2 {
    text-align: center;
    color: #fff;
}

form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

input {
    padding: 10px;
    font-size: 16px;
    border: 1px solid #444;
    border-radius: 5px;
    background-color: #222;
    color: #fff;
}

button {
    padding: 10px;
    font-size: 16px;
    background-color: #28a745;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #218838;
}

.search-container {
    margin-bottom: 20px;
}

#searchInput {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #444;
    border-radius: 5px;
    background-color: #222;
    color: #fff;
}

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

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #444;
}

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

tr:hover {
    background-color: #222;
}

.actions {
    display: flex;
    gap: 5px;
}

.add-to-cart-btn, .add-stock-btn, .delete-btn {
    padding: 5px 10px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
}

.add-to-cart-btn {
    background-color: #17a2b8;
    color: #fff;
}

.add-to-cart-btn:hover {
    background-color: #138496;
}

.add-stock-btn {
    background-color: #ffc107;
    color: #000;
}

.add-stock-btn:hover {
    background-color: #e0a800;
}

.delete-btn {
    background-color: #dc3545;
    color: #fff;
}

.delete-btn:hover {
    background-color: #c82333;
}

.cart {
    margin-top: 30px;
    padding: 20px;
    background-color: #222;
    border-radius: 10px;
}

.cart h2 {
    margin-top: 0;
}

#sellCartBtn {
    margin-top: 10px;
    background-color: #28a745;
}

#sellCartBtn:hover {
    background-color: #218838;
}

.stats {
    margin-top: 30px;
    padding: 20px;
    background-color: #222;
    border-radius: 10px;
}

.stats h2 {
    margin-top: 0;
}

.stats p {
    font-size: 18px;
    margin: 10px 0;
}

/* Стили для модального окна */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: #222;
    padding: 20px;
    border-radius: 10px;
    width: 400px;
    max-width: 90%;
    color: #fff;
    position: relative;
}

.modal-content .close {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 24px;
    cursor: pointer;
}

.modal-content h2 {
    margin-top: 0;
}

#receiptTable {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
}

#receiptTable th, #receiptTable td {
    padding: 8px;
    border-bottom: 1px solid #444;
    text-align: left;
}

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

#confirmSaleBtn, #cancelSaleBtn {
    padding: 10px;
    margin: 5px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

#confirmSaleBtn {
    background-color: #28a745;
    color: #fff;
}

#confirmSaleBtn:hover {
    background-color: #218838;
}

#cancelSaleBtn {
    background-color: #dc3545;
    color: #fff;
}

#cancelSaleBtn:hover {
    background-color: #c82333;
}