/* ===== CSS 變數 ===== */
:root {
    --primary-green: #2DD881;
    --primary-green-hover: #25B86D;
    --primary-green-light: #E8F9F0;
    --primary-green-bg: #F0FDF7;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --bg-white: #FFFFFF;
    --bg-gray: #F9FAFB;
    --border-color: #E5E7EB;
    --border-light: #F3F4F6;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* ===== 基礎樣式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft JhengHei", "微軟正黑體", sans-serif;
    background: var(--bg-gray);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== 容器 ===== */
.settings-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== 頁首 ===== */
.settings-header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-content h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.btn-back {
    padding: 12px 24px;
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-back:hover {
    background: var(--primary-green-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ===== 主體內容 ===== */
.settings-body {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
    width: 100%;
}

/* ===== 分頁切換 ===== */
.tab-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    background: var(--bg-white);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover {
    border-color: var(--primary-green-light);
    color: var(--primary-green);
    background: var(--primary-green-bg);
}

.tab-btn.active {
    background: var(--primary-green);
    color: white;
    border-color: var(--primary-green);
}

/* ===== 分頁內容 ===== */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ===== 區塊卡片 ===== */
.section-card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.section-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-light);
}

/* ===== 表單樣式 ===== */
.form-row {
    display: flex;
    gap: 12px;
    align-items: center;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    align-items: start;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.2s;
    background: var(--bg-white);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px var(--primary-green-light);
}

.color-input {
    height: 80px;
    cursor: pointer;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 4px;
    width: 100%;
}

.color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input::-webkit-color-swatch {
    border: none;
    border-radius: 6px;
}

.color-input::-moz-color-swatch {
    border: none;
    border-radius: 6px;
}

/* ===== 按鈕樣式 ===== */
.btn-primary {
    padding: 12px 24px;
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: var(--primary-green-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-cancel {
    padding: 12px 24px;
    background: var(--bg-gray);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-cancel:hover {
    background: var(--border-light);
    border-color: var(--text-secondary);
}

.btn-edit {
    padding: 8px 16px;
    background: var(--primary-green-light);
    color: var(--primary-green);
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-edit:hover {
    background: var(--primary-green);
    color: white;
}

.btn-delete {
    padding: 8px 16px;
    background: #FEE2E2;
    color: #DC2626;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-delete:hover {
    background: #DC2626;
    color: white;
}

.btn-barcode {
    padding: 8px 16px;
    background: #E0F2FE;
    color: #0369A1;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-barcode:hover {
    background: #0369A1;
    color: white;
}

.btn-test {
    padding: 12px 24px;
    background: var(--bg-white);
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-test:hover {
    background: var(--primary-green);
    color: white;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

/* ===== 項目列表 ===== */
.item-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.item-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg-gray);
    border: 2px solid var(--border-light);
    border-radius: 8px;
    transition: all 0.2s;
}

.item-card:hover {
    border-color: var(--primary-green-light);
    box-shadow: var(--shadow-sm);
}

.item-info {
    display: flex;
    gap: 16px;
    align-items: center;
}

.item-id {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--border-light);
    padding: 4px 12px;
    border-radius: 6px;
}

.item-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
}

/* ===== 產品網格 ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.product-card {
    background: var(--bg-white);
    border: 2px solid var(--border-light);
    border-radius: 12px;
    padding: 16px;
    transition: all 0.2s;
}

.product-card:hover {
    border-color: var(--primary-green-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.product-image {
    width: 100%;
    height: 150px;
    margin-bottom: 16px;
    position: relative;
    overflow: hidden;
}

.product-image svg,
.product-image img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border-radius: 8px;
}

.product-color-dot {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
    z-index: 10;
}

.product-info {
    margin-top: 4px;
}

.product-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.product-price {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-green);
    margin-bottom: 4px;
}

.product-category {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.product-barcode {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 6px;
    font-family: 'Courier New', monospace;
    background: var(--bg-gray);
    padding: 4px 8px;
    border-radius: 4px;
    display: inline-block;
}

.category-badge {
    display: inline-block;
    padding: 4px 10px;
    background: var(--primary-green-light);
    color: var(--primary-green);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid var(--primary-green);
}

.product-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.product-actions button {
    flex: 1;
}

/* ===== 統計卡片 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all 0.2s;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-green-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.stat-info {
    flex: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== 訂單列表 ===== */
.orders-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.order-card {
    background: var(--bg-white);
    border: 2px solid var(--border-light);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.2s;
}

.order-card:hover {
    border-color: var(--primary-green-light);
    box-shadow: var(--shadow-md);
}

.order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-light);
}

.order-number {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.order-date {
    font-size: 14px;
    color: var(--text-secondary);
}

.order-items {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.order-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    background: var(--bg-gray);
    border-radius: 6px;
    font-size: 14px;
}

.order-footer {
    display: flex;
    justify-content: flex-end;
    padding-top: 12px;
    border-top: 2px solid var(--border-light);
}

.order-total {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-green);
}

/* ===== 選項列表 ===== */
.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-gray);
    border: 2px solid var(--border-light);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.option-item:hover {
    border-color: var(--primary-green-light);
    background: var(--primary-green-bg);
}

.option-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-green);
}

.option-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.option-title {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
}

.option-desc {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ===== 測試區塊 ===== */
.test-section {
    padding: 20px;
    background: var(--bg-gray);
    border-radius: 8px;
}

.test-buttons {
    display: flex;
    gap: 12px;
}

.test-buttons button {
    flex: 1;
}

/* ===== 響應式設計 ===== */
@media (max-width: 768px) {
    .header-content {
        padding: 16px;
    }

    .header-content h1 {
        font-size: 20px;
    }

    .settings-body {
        padding: 16px;
    }

    .tab-buttons {
        gap: 8px;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 14px;
    }

    .section-card {
        padding: 16px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 12px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .form-row {
        flex-direction: column;
    }

    .test-buttons {
        flex-direction: column;
    }
}

/* ===== 小屏幕優化 ===== */
@media (max-width: 480px) {
    .header-content h1 {
        font-size: 18px;
    }

    .btn-back {
        padding: 8px 16px;
        font-size: 13px;
    }

    .tab-btn {
        font-size: 13px;
        padding: 8px 12px;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 深色模式 ===== */
body.dark-mode {
    /* 主要綠色 - 更亮以提高可見度 */
    --primary-green: #009838;
    --primary-green-hover: #3BC970;
    --primary-green-light: #1E3A2B;
    --primary-green-bg: #172820;

    /* 文字顏色 */
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --text-light: #6B7280;

    /* 背景顏色 */
    --bg-white: #1A1F27;
    --bg-gray: #0F1419;
    --bg-card: #1E242C;

    /* 邊框顏色 */
    --border-color: #2D333B;
    --border-light: #252A32;

    /* 陰影 - 深色模式下的層次 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* 深色模式下的元件 */
body.dark-mode .settings-header,
body.dark-mode .section-card,
body.dark-mode .item-card,
body.dark-mode .product-card,
body.dark-mode .order-card {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body.dark-mode .category-badge {
    background: var(--primary-green-light);
    color: var(--primary-green);
    border-color: var(--primary-green);
}

body.dark-mode .product-barcode {
    background: var(--border-color);
    color: var(--text-light);
}

body.dark-mode .form-input,
body.dark-mode .form-select,
body.dark-mode select,
body.dark-mode input[type="text"],
body.dark-mode input[type="number"],
body.dark-mode input[type="date"],
body.dark-mode input[type="color"],
body.dark-mode input[type="file"],
body.dark-mode textarea {
    background: var(--bg-gray);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body.dark-mode .color-input {
    border-color: #4B5563;
}

body.dark-mode h1,
body.dark-mode h2,
body.dark-mode h3,
body.dark-mode .option-title,
body.dark-mode .item-name {
    color: var(--text-primary);
}

body.dark-mode .option-desc,
body.dark-mode .item-id,
body.dark-mode small {
    color: var(--text-secondary);
}

body.dark-mode .stat-card {
    background: var(--bg-card);
    border-color: var(--border-color);
}

body.dark-mode .stat-value {
    color: var(--primary-green);
}

/* 深色模式下的按鈕 */
body.dark-mode .btn-primary,
body.dark-mode .btn-back {
    background: var(--primary-green);
    color: #FFFFFF;
}

body.dark-mode .btn-primary:hover,
body.dark-mode .btn-back:hover {
    background: var(--primary-green-hover);
}

body.dark-mode .btn-delete {
    background: #DC2626;
    color: white;
}

body.dark-mode .btn-delete:hover {
    background: #B91C1C;
}

body.dark-mode .btn-edit {
    background: var(--bg-gray);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body.dark-mode .btn-edit:hover {
    background: var(--border-light);
}

/* 深色模式下的分頁按鈕 */
body.dark-mode .tab-btn {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body.dark-mode .tab-btn:hover {
    background: var(--border-light);
    border-color: var(--primary-green);
}

body.dark-mode .tab-btn.active {
    background: var(--primary-green);
    color: #FFFFFF;
    border-color: var(--primary-green);
}

/* 深色模式下的表格 */
body.dark-mode table {
    background: var(--bg-card);
    color: var(--text-primary);
}

body.dark-mode th {
    background: var(--bg-gray);
    color: var(--text-primary);
    border-bottom-color: var(--border-color);
}

body.dark-mode td {
    border-color: var(--border-light);
}

body.dark-mode tr:hover {
    background: var(--border-light);
}

/* ===== 產品列表頭部（標題 + 分類標籤）===== */
.product-list-header {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 20px;
}

.product-list-header h3 {
    margin: 0;
}

/* ===== 分類篩選標籤 ===== */
.category-tabs {
    display: flex;
    flex-wrap: nowrap;
    gap: 8px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

.category-tabs::-webkit-scrollbar {
    height: 6px;
}

.category-tabs::-webkit-scrollbar-track {
    background: var(--bg-gray);
    border-radius: 3px;
}

.category-tabs::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.category-tabs::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.category-tab {
    flex-shrink: 0;
    padding: 8px 16px;
    background: var(--bg-white);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.category-tab:hover {
    background: var(--primary-green-light);
    color: var(--primary-green);
    border-color: var(--primary-green);
}

.category-tab.active {
    background: var(--primary-green);
    color: white;
    border-color: var(--primary-green);
}

/* 深色模式下的分類標籤 */
body.dark-mode .category-tab {
    background: var(--bg-card);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

body.dark-mode .category-tab:hover {
    background: var(--primary-green-light);
    color: var(--primary-green);
    border-color: var(--primary-green);
}

body.dark-mode .category-tab.active {
    background: var(--primary-green);
    color: white;
    border-color: var(--primary-green);
}

/* 響應式設計 - 小螢幕 */
@media (max-width: 768px) {
    .product-list-header {
        gap: 12px;
    }

    .category-tabs {
        gap: 6px;
        scrollbar-width: none;  /* Firefox 隱藏滾動條 */
    }

    .category-tabs::-webkit-scrollbar {
        display: none;  /* Chrome/Safari 隱藏滾動條 */
    }

    .category-tab {
        padding: 6px 12px;
        font-size: 13px;
    }
}