/* 全局樣式設置 */
:root {
    --primary-color: #4CAF50;
    --primary-hover: #45a049;
    --secondary-color: #007bff;
    --secondary-hover: #0056b3;
    --text-color: #333;
    --light-gray: #f4f4f4;
    --border-color: #ddd;
    --shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-gray);
    padding-bottom: 20px;
}

/* 搜索框和選擇框樣式 */
input[type=text], select {
    width: auto;
    padding: 12px 15px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 14px;
    transition: var(--transition);
}

input[type=text]:focus, select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.3);
}

/* 按鈕樣式 */
input[type=submit], button {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 20px;
    margin: 8px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
}

input[type=submit]:hover, button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* 顯示購物車按鈕樣式 */
#toggleCart {
    background-color: var(--secondary-color);
    color: white;
    padding: 10px 15px;
    margin: 10px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
    display: block;
    width: 200px;
    margin: 15px auto;
}

#toggleCart:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* 搜索容器樣式 */
.search-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 20px auto;
    max-width: 1200px;
    padding: 0 15px;
    flex-wrap: wrap;
}

.custom-button-container {
    display: flex;
    justify-content: flex-start;
    gap: 10px;
}

.search-form-container {
    flex-grow: 2;
    display: flex;
    justify-content: center;
}

.placeholder-container {
    flex-grow: 1;
}

.search-container form {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.search-container input[type="text"], .search-container select {
    margin: 0;
    min-width: 200px;
}

.search-container input[type="submit"] {
    min-width: 100px;
    font-size: 16px;
}

/* 分頁樣式 */
.pagination {
    text-align: center;
    margin: 30px 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 5px;
}

.pagination a {
    display: inline-block;
    padding: 8px 16px;
    background-color: white;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.pagination a:hover {
    background-color: var(--light-gray);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.pagination a.active {
    background-color: var(--secondary-color);
    color: white;
    font-weight: bold;
    border-color: var(--secondary-color);
}

/* 商品和公告區塊樣式 */
.announcement {
    background-color: #000;
    color: white;
    padding: 15px;
    text-align: center;
    font-weight: bold;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.product-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.product {
    width: calc(20% - 20px);
    min-width: 250px;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.product:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.product-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f9f9f9;
}

.product img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: var(--transition);
}

.product img:hover {
    transform: scale(1.05);
}

hr.separator {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 10px 0;
}

.product-info {
    padding: 15px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.product-id, .product-category, .product-description, .product-price {
    margin-bottom: 8px;
    font-size: 14px;
}

.product-status {
    font-weight: bold;
    margin-bottom: 15px;
    padding: 5px 10px;
    border-radius: 4px;
    display: inline-block;
}

.in-stock {
    color: #28a745;
    background-color: rgba(40, 167, 69, 0.1);
}

.deposit-received {
    color: #ffc107;
    background-color: rgba(255, 193, 7, 0.1);
}

.sold-out {
    color: #dc3545;
    background-color: rgba(220, 53, 69, 0.1);
}

/* 模態框（彈窗）樣式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 80%;
    max-height: 80vh;
    object-fit: contain;
    animation: zoomIn 0.3s;
}

@keyframes zoomIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.close:hover {
    color: white;
    transform: scale(1.1);
}

/* 添加到購物車按鈕樣式 */
.add-to-cart-button {
    padding: 10px 15px;
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    margin-top: auto;
}

.add-to-cart-button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* 側邊購物車樣式 */
.sidebar {
    width: 300px;
    position: fixed;
    right: 0;
    top: 0;
    height: 100%;
    background-color: white;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
    z-index: 1000;
    padding: 20px;
    display: none;
    transition: var(--transition);
}

.cart-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.cart-title {
    font-size: 24px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.cart-items {
    flex-grow: 1;
    overflow-y: auto;
    margin-bottom: 20px;
}

.cart-item {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 10px;
    background-color: var(--light-gray);
    border-radius: 4px;
}

.cart-item-id, .cart-item-name, .cart-item-desc, .cart-item-price {
    margin-bottom: 5px;
}

.cart-total {
    font-size: 18px;
    font-weight: bold;
    margin: 15px 0;
    padding: 10px 0;
    border-top: 1px solid var(--border-color);
}

.cart-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.clear-cart-btn, .notify-btn {
    width: 100%;
    padding: 12px;
    border-radius: 4px;
    font-size: 14px;
    transition: var(--transition);
}

.clear-cart-btn {
    background-color: #dc3545;
    color: white;
}

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

.notify-btn {
    background-color: var(--secondary-color);
    color: white;
}

.notify-btn:hover {
    background-color: var(--secondary-hover);
}

.remove-item-btn {
    background-color: #dc3545;
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    margin-top: 5px;
}

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

.disabled-button {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
    cursor: not-allowed;
    opacity: 0.7;
}

.disabled-button:hover {
    background-color: #f5c6cb;
    transform: none;
    box-shadow: none;
}

/* 自定義按鈕樣式 */
.custom-button {
    padding: 10px 20px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
    display: inline-block;
}

.custom-button:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* 無商品提示 */
.no-products {
    text-align: center;
    padding: 50px;
    background-color: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin: 20px auto;
    max-width: 600px;
}

.no-products p {
    font-size: 18px;
    color: #6c757d;
}

/* 響應式設計 */
@media (max-width: 1200px) {
    .product {
        width: calc(25% - 20px);
    }
}

@media (max-width: 992px) {
    .product {
        width: calc(33.333% - 20px);
    }
}

@media (max-width: 768px) {
    .product {
        width: calc(50% - 20px);
    }
    
    .search-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .custom-button-container, .search-form-container, .placeholder-container {
        width: 100%;
        margin-bottom: 15px;
    }
    
    .custom-button-container {
        justify-content: center;
    }
    
    .sidebar {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .product {
        width: 100%;
    }
    
    .pagination a {
        padding: 6px 12px;
    }
}