/* 顏色系統基於主色 #FFD400 */
:root {
    /* 主色系 */
    --primary-color: #FFD400;
    --primary-light: #FFE066;
    --primary-dark: #E6C200;
    --primary-darker: #CCAA00;
    
    /* 輔助色 */
    --secondary-color: #667eea;
    --secondary-light: #8B9AED;
    --secondary-dark: #5467D6;
    
    /* 中性色 */
    --text-primary: #2c3e50;
    --text-secondary: #5a6c7d;
    --text-muted: #7f8c8d;
    --background-light: #f8f9fa;
    --background-white: #ffffff;
    --border-color: #e1e8ed;
    
    /* 黃色主色專用文字色 */
    --text-on-primary: #2c3e50;
    --text-on-primary-light: #2c3e50;
    
    /* 語意色彩 */
    --success-color: #27ae60;
    --success-light: #2ecc71;
    --error-color: #e74c3c;
    --warning-color: #f39c12;
    
    /* 圓角統一 */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 15px;
    --border-radius-xl: 25px;
    
    /* 間距統一 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* 全域樣式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'M PLUS Rounded 1c', 'Noto Sans JP', 'Microsoft JhengHei', 'Hiragino Sans', 'Arial', sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--background-light);
    font-weight: 400;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 頁首樣式 */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--text-on-primary);
    padding: var(--spacing-md) 0;
    box-shadow: 0 2px 10px rgba(255, 212, 0, 0.15);
    border-bottom: 1px solid var(--primary-light);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-on-primary);
    letter-spacing: -0.02em;
}

.header-nav {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-on-primary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--border-radius-xl);
    transition: all 0.2s ease;
    font-size: 1rem;
    font-weight: 500;
}

.nav-link:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
    color: var(--text-on-primary);
}

.nav-link.active {
    background: var(--primary-dark);
    color: var(--background-white);
    font-weight: 600;
}

.cart-icon {
    position: relative;
    cursor: pointer;
    background: #FFC300;
    padding: 10px 20px;
    border-radius: var(--border-radius-xl);
    transition: all 0.2s ease;
    color: var(--text-on-primary);
    font-weight: 500;
}

.cart-icon:hover {
    background: #E6B200;
    color: var(--background-white);
}

#cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--error-color);
    color: var(--background-white);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 主要內容樣式 */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 140px);
}

section {
    margin-bottom: 3rem;
}

h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.8rem;
    text-align: center;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* 分類按鈕樣式 */
.category-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.category-btn {
    background: var(--background-white);
    border: 2px solid var(--border-color);
    padding: 10px 20px;
    border-radius: var(--border-radius-xl);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.category-btn:hover {
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    background: var(--primary-light);
    color: var(--text-on-primary);
}

.category-btn.active {
    background: var(--primary-dark);
    color: var(--background-white);
    border-color: var(--primary-dark);
    font-weight: 600;
}

/* 商品網格樣式 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.product-card {
    background: var(--background-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 212, 0, 0.15);
    border-color: var(--primary-dark);
}

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(45deg, var(--primary-light), var(--primary-color));
}

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.product-price {
    font-size: 1.5rem;
    color: var(--error-color);
    font-weight: 700;
    margin-bottom: 1rem;
}

.product-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

.add-to-cart-btn {
    width: 100%;
    background: linear-gradient(135deg, #FAE7CB 0%, #E6D4A3 100%);
    color: #2c3e50;
    border: none;
    padding: 12px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.add-to-cart-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(250, 231, 203, 0.5);
}

.add-to-cart-btn:active {
    transform: scale(0.98);
}

/* 購物車樣式 */
.cart-section {
    background: var(--background-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
}

.cart-items {
    margin-bottom: 2rem;
}

.cart-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    gap: var(--spacing-sm);
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    background: var(--primary-light);
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.cart-item-price {
    color: var(--error-color);
    font-weight: 600;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quantity-btn {
    background: var(--primary-dark);
    color: var(--background-white);
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s ease;
}

.quantity-btn:hover {
    background: var(--primary-darker);
    transform: scale(1.1);
}

.quantity-input {
    width: 50px;
    text-align: center;
    border: 1px solid var(--border-color);
    padding: 5px;
    border-radius: var(--border-radius-sm);
    font-family: 'M PLUS Rounded 1c', 'Noto Sans JP', sans-serif;
}

.remove-btn {
    background: var(--error-color);
    color: var(--background-white);
    border: none;
    padding: 8px 15px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.remove-btn:hover {
    background: #c0392b;
    transform: translateY(-1px);
}

.cart-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.back-to-shop-btn {
    background: var(--text-muted);
    color: var(--background-white);
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.back-to-shop-btn:hover {
    background: var(--text-secondary);
    transform: translateY(-1px);
}

.cart-summary {
    text-align: right;
    padding-top: var(--spacing-sm);
    border-top: 2px solid var(--border-color);
}

.total {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.checkout-btn {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--success-light) 100%);
    color: var(--background-white);
    border: none;
    padding: 15px 30px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.checkout-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

/* 結帳表單樣式 */
.checkout-section {
    background: var(--background-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'M PLUS Rounded 1c', 'Noto Sans JP', sans-serif;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: 'M PLUS Rounded 1c', 'Noto Sans JP', sans-serif;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 3px rgba(255, 212, 0, 0.1);
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

.back-btn {
    background: var(--text-muted);
    color: var(--background-white);
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.back-btn:hover {
    background: var(--text-secondary);
    transform: translateY(-1px);
}

.submit-btn {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--success-light) 100%);
    color: var(--background-white);
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

/* 付款方式樣式 */
.payment-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.payment-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--background-white);
}

.payment-option:hover {
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 212, 0, 0.1);
}

.payment-option input[type="radio"] {
    margin-right: var(--spacing-sm);
    width: 20px;
    height: 20px;
    accent-color: var(--primary-dark);
}

.payment-option input[type="radio"]:checked + .payment-icon {
    transform: scale(1.1);
    color: var(--primary-dark);
}

.payment-option:has(input[type="radio"]:checked) {
    border-color: var(--primary-dark);
    background: linear-gradient(135deg, rgba(255, 212, 0, 0.05) 0%, rgba(230, 194, 0, 0.05) 100%);
}

.payment-icon {
    font-size: 2rem;
    margin-right: var(--spacing-sm);
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.payment-text {
    flex: 1;
}

.payment-text strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
    font-weight: 600;
}

.payment-text small {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 信用卡欄位樣式 */
.credit-card-fields {
    background: var(--background-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-top: var(--spacing-sm);
    border: 2px dashed var(--primary-dark);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 3px rgba(255, 212, 0, 0.1);
}

/* 信用卡輸入欄位特殊樣式 */
#card-number, #card-expiry, #card-cvv {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 1.1rem;
    letter-spacing: 1px;
}

#card-cvv {
    text-align: center;
}

/* 頁尾樣式 */
footer {
    background: var(--text-primary);
    color: var(--background-white);
    text-align: center;
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-xl);
}

/* 工具類別 */
.hidden {
    display: none;
}

.text-center {
    text-align: center;
}

/* 響應式設計 - 手機優先 */
@media (max-width: 375px) {
    .container {
        padding: 0 12px;
    }
    
    header h1 {
        font-size: 1.4rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .product-card {
        margin-bottom: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .header-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.9rem;
        padding: 6px 12px;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .cart-item {
        flex-direction: column;
        text-align: center;
    }
    
    .form-actions {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .category-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-xs);
    }
    
    .category-btn {
        width: 200px;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .checkout-section {
        padding: 1rem;
    }
    
    .cart-section {
        padding: 1rem;
    }
}

/* 文章列表頁面樣式 */
.articles-section {
    padding: 2rem 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.article-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.article-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-content {
    padding: 1.5rem;
}

.article-title {
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 0.8rem;
    color: #2c3e50;
}

.article-excerpt {
    color: #7f8c8d;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #95a5a6;
}

.article-category {
    background: #667eea;
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.read-more-btn {
    color: #667eea;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.read-more-btn:hover {
    color: #764ba2;
}

/* 關於我們頁面樣式 */
.about-section {
    padding: 2rem 0;
}

.about-header {
    text-align: center;
    margin-bottom: 3rem;
}

.about-subtitle {
    color: #7f8c8d;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.about-content > div {
    margin-bottom: 3rem;
}

.about-content h3 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.mission-list {
    list-style: none;
    padding: 0;
}

.mission-list li {
    padding: 0.8rem 0;
    padding-left: 2rem;
    position: relative;
}

.mission-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
    font-size: 1.2rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.value-card {
    text-align: center;
    padding: 2rem 1rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.value-card:hover {
    transform: translateY(-5px);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.value-card h4 {
    color: #2c3e50;
    margin-bottom: 0.8rem;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.team-member {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.member-avatar img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
}

.member-role {
    color: #667eea;
    font-weight: bold;
    margin: 0.5rem 0;
}

.member-desc {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem 1rem;
    border-radius: 15px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* 聯繫我們頁面樣式 */
.contact-section {
    padding: 2rem 0;
}

.contact-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-subtitle {
    color: #7f8c8d;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.contact-icon {
    font-size: 2rem;
    min-width: 50px;
    text-align: center;
}

.contact-details h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.contact-note {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.contact-faq {
    margin-bottom: 3rem;
}

.faq-list {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.faq-item {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.faq-item h4 {
    color: #667eea;
    margin-bottom: 0.8rem;
}

.contact-social {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1.5rem;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #2c3e50;
    transition: transform 0.3s ease;
}

.social-link:hover {
    transform: translateY(-3px);
    color: #667eea;
}

.social-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .social-links {
        flex-wrap: wrap;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .payment-option {
        padding: 0.8rem;
    }
    
    .payment-icon {
        font-size: 1.5rem;
        margin-right: 0.8rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .credit-card-fields {
        padding: 1rem;
    }
}