/* 重置樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基本變量 */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #f59e0b;
    --accent-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-accent: #f3f4f6;
    --border-color: #e5e7eb;
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 暗色主題變量 */
:root[data-theme="dark"] {
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --secondary-color: #fbbf24;
    --accent-color: #34d399;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-light: #94a3b8;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-accent: #080c16;
    --border-color: #475569;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
}

/* 系統暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --primary-color: #1e40af;
        --primary-dark: #1e3a8a;
        --secondary-color: #fbbf24;
        --accent-color: #34d399;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-light: #94a3b8;
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-accent: #080c16;
        --border-color: #475569;
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
        --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
    }
}

/* 主題切換按鈕樣式 */
.theme-toggle {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 1001;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
    background: var(--primary-color);
    color: white;
}

.theme-toggle i {
    font-size: 1.2rem;
}

/* 暗色模式下的導航欄優化 */
:root[data-theme="dark"] .navbar {
    background-color: rgba(15, 23, 42, 0.95);
    border-bottom-color: var(--border-color);
}

:root[data-theme="dark"] .dropdown-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

:root[data-theme="dark"] .dropdown-content a:hover {
    background-color: var(--bg-accent);
    color: var(--primary-color);
}

:root[data-theme="dark"] .nav-link:hover,
:root[data-theme="dark"] .nav-link.active {
    color: var(--primary-color);
    background-color: rgba(30, 64, 175, 0.1);
}

:root[data-theme="dark"] .cart-icon {
    background-color: var(--bg-accent);
    color: var(--text-primary);
}

:root[data-theme="dark"] .cart-icon:hover {
    background-color: var(--primary-color);
    color: white;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .navbar {
        background-color: rgba(15, 23, 42, 0.95);
        border-bottom-color: var(--border-color);
    }
    
    :root:not([data-theme]) .dropdown-content {
        background-color: var(--bg-secondary);
        border: 1px solid var(--border-color);
    }
    
    :root:not([data-theme]) .dropdown-content a:hover {
        background-color: var(--bg-accent);
        color: var(--primary-color);
    }
    
    :root:not([data-theme]) .nav-link:hover,
    :root:not([data-theme]) .nav-link.active {
        color: var(--primary-color);
        background-color: rgba(30, 64, 175, 0.1);
    }
    
    :root:not([data-theme]) .cart-icon {
        background-color: var(--bg-accent);
        color: var(--text-primary);
    }
    
    :root:not([data-theme]) .cart-icon:hover {
        background-color: var(--primary-color);
        color: white;
    }
}

/* 暗色模式下的英雄區塊優化 */
:root[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #080c16 100%);
}

:root[data-theme="dark"] .hero::before {
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="gear-dark" patternUnits="userSpaceOnUse" width="20" height="20"><path d="M10 5 L15 10 L10 15 L5 10 Z" fill="rgba(255,255,255,0.02)"/></pattern></defs><rect width="100" height="100" fill="url(%23gear-dark)"/></svg>');
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .hero {
        background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #080c16 100%);
    }
    
    :root:not([data-theme]) .hero::before {
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="gear-dark" patternUnits="userSpaceOnUse" width="20" height="20"><path d="M10 5 L15 10 L10 15 L5 10 Z" fill="rgba(255,255,255,0.02)"/></pattern></defs><rect width="100" height="100" fill="url(%23gear-dark)"/></svg>');
    }
}

/* 暗色模式下的卡片和組件優化 */
:root[data-theme="dark"] .category-card,
:root[data-theme="dark"] .product-card,
:root[data-theme="dark"] .news-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .category-card,
    :root:not([data-theme]) .product-card,
    :root:not([data-theme]) .news-card {
        background-color: var(--bg-secondary);
        border: 1px solid var(--border-color);
    }
}

/* 暗色模式下的表單和輸入框優化 */
:root[data-theme="dark"] .search-input,
:root[data-theme="dark"] .form-group input,
:root[data-theme="dark"] .form-group textarea {
    background-color: var(--bg-accent);
    border-color: var(--border-color);
    color: var(--text-primary);
}

:root[data-theme="dark"] .search-input::placeholder,
:root[data-theme="dark"] .form-group input::placeholder,
:root[data-theme="dark"] .form-group textarea::placeholder {
    color: var(--text-light);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .search-input,
    :root:not([data-theme]) .form-group input,
    :root:not([data-theme]) .form-group textarea {
        background-color: var(--bg-accent);
        border-color: var(--border-color);
        color: var(--text-primary);
    }
    
    :root:not([data-theme]) .search-input::placeholder,
    :root:not([data-theme]) .form-group input::placeholder,
    :root:not([data-theme]) .form-group textarea::placeholder {
        color: var(--text-light);
    }
}

/* 暗色模式下的購物車側邊欄優化 */
:root[data-theme="dark"] .cart-sidebar {
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .cart-sidebar {
        background-color: var(--bg-secondary);
        border-left: 1px solid var(--border-color);
    }
}

/* 暗色模式下的頁腳優化 */
:root[data-theme="dark"] .footer {
    background-color: var(--bg-accent);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .footer {
        background-color: var(--bg-accent);
    }
}

/* 暗色模式下的滾動條優化 */
:root[data-theme="dark"] ::-webkit-scrollbar {
    width: 8px;
}

:root[data-theme="dark"] ::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

:root[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

:root[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) ::-webkit-scrollbar {
        width: 8px;
    }
    
    :root:not([data-theme]) ::-webkit-scrollbar-track {
        background: var(--bg-secondary);
    }
    
    :root:not([data-theme]) ::-webkit-scrollbar-thumb {
        background: var(--border-color);
        border-radius: 4px;
    }
    
    :root:not([data-theme]) ::-webkit-scrollbar-thumb:hover {
        background: var(--text-light);
    }
}

/* 暗色模式過渡動畫 */
*, *::before, *::after {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* 基本樣式 */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

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

/* 按鈕樣式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-block {
    width: 100%;
}

/* 導航欄 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo-img {
    height: auto;
    max-height: 60px;
}

.nav-logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.nav-logo .nav-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.1);
}

.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-content a {
    display: block;
    padding: 12px 16px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-content a:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

.nav-icons {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-container {
    position: relative;
}

.search-input {
    padding: 8px 40px 8px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: var(--transition);
    width: 250px;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    cursor: pointer;
}

.cart-icon {
    position: relative;
    padding: 12px;
    border-radius: var(--border-radius);
    background-color: var(--bg-secondary);
    cursor: pointer;
    transition: var(--transition);
}

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

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* 英雄區塊 - 调整版本 */
.hero {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 25%, #404040 50%, #2d2d2d 75%, #1a1a1a 100%);
    color: white;
    padding: 100px 0 70px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(218, 165, 32, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(184, 134, 11, 0.06) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="gear" patternUnits="userSpaceOnUse" width="40" height="40"><path d="M20 10 L30 20 L20 30 L10 20 Z" fill="rgba(218,165,32,0.02)"/></pattern></defs><rect width="100" height="100" fill="url(%23gear)"/></svg>');
    animation: heroPattern 20s linear infinite;
}

@keyframes heroPattern {
    0% { transform: translateX(0) translateY(0); }
    100% { transform: translateX(-40px) translateY(-40px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-logo {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeInScale 1s ease-out;
}

@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.hero-logo-img {
    max-width: 280px;
    height: auto;
    filter: drop-shadow(0 0 15px rgba(218, 165, 32, 0.2));
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    background: linear-gradient(45deg, #DAA520, #B8860B, #DAA520);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite, titleFadeIn 1.2s ease-out;
    letter-spacing: -0.5px;
    line-height: 1.1;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes titleFadeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: #DAA520;
    font-weight: 500;
    position: relative;
    display: inline-block;
    animation: subtitleFadeIn 1.5s ease-out;
}

.hero-subtitle::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #DAA520, transparent);
    border-radius: 1px;
}

@keyframes subtitleFadeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.6;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    animation: descriptionFadeIn 1.8s ease-out;
}

.hero-description::before {
    content: '"';
    position: absolute;
    left: -15px;
    top: -5px;
    font-size: 2.5rem;
    color: rgba(218, 165, 32, 0.25);
    font-family: serif;
}

.hero-description::after {
    content: '"';
    position: absolute;
    right: -15px;
    bottom: -15px;
    font-size: 2.5rem;
    color: rgba(218, 165, 32, 0.25);
    font-family: serif;
}

@keyframes descriptionFadeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: buttonsFadeIn 2.1s ease-out;
}

@keyframes buttonsFadeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 调整按钮样式 */
.hero-buttons .btn {
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 30px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    min-width: 140px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-buttons .btn-primary {
    background: linear-gradient(45deg, #DAA520, #B8860B);
    color: #000;
    border: none;
    box-shadow: 0 6px 20px rgba(218, 165, 32, 0.25);
}

.hero-buttons .btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.hero-buttons .btn-primary:hover::before {
    left: 100%;
}

.hero-buttons .btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(218, 165, 32, 0.35);
    background: linear-gradient(45deg, #B8860B, #DAA520);
}

.hero-buttons .btn-secondary {
    background: transparent;
    color: #DAA520;
    border: 2px solid #DAA520;
    backdrop-filter: blur(10px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.hero-buttons .btn-secondary:hover {
    background: linear-gradient(45deg, #DAA520, #B8860B);
    color: #000;
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(218, 165, 32, 0.35);
    border-color: transparent;
}

/* 调整装饰元素对齐 */
.hero-content::after {
    content: '';
    position: absolute;
    top: 50%;
    left: -40px;
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #DAA520, transparent);
    transform: translateY(-50%);
    animation: decorationSlideIn 2.5s ease-out;
}

.hero-content::before {
    content: '';
    position: absolute;
    top: 50%;
    right: -40px;
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #DAA520, transparent);
    transform: translateY(-50%);
    animation: decorationSlideIn 2.5s ease-out reverse;
}

@keyframes decorationSlideIn {
    0% {
        opacity: 0;
        transform: translateY(-50%) translateX(-20px);
    }
    100% {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
}

/* 區段標題 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 產品分類 */
.product-categories {
    padding: 80px 0;
    background-color: var(--bg-secondary);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, auto);
    gap: 2rem;
    margin-top: 3rem;
}

.category-card:nth-child(2) {
    grid-column: 2 / 4;
}

.category-card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
    transition: left 0.5s ease;
}

.category-card:hover::before {
    left: 100%;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.category-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.category-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.category-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.category-count {
    display: inline-block;
    background-color: var(--bg-accent);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* 熱門產品 */
.featured-products {
    padding: 80px 0;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

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

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

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--secondary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.product-actions {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-actions {
    opacity: 1;
}

.action-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background-color: white;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.product-info {
    padding: 1.5rem;
}

.product-category {
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.product-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.product-description {
    color: var(--text-secondary);
    font-size: 0.925rem;
    margin-bottom: 1rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.feature-tag {
    background-color: var(--bg-accent);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.add-to-cart {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.add-to-cart:hover {
    background-color: var(--primary-dark);
}

/* 最新消息 */
.news-section {
    padding: 80px 0;
    background-color: var(--bg-secondary);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.news-card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.news-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.news-content {
    padding: 1.5rem;
}

.news-date {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.news-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.news-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-type {
    display: inline-block;
    background-color: var(--bg-accent);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

/* 關於我們 */
.about-section {
    padding: 80px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.about-features {
    display: grid;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.75rem;
    top: 1.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--border-color);
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-event {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 聯絡我們 */
.contact-section {
    padding: 80px 0;
    background-color: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item i {
    color: var(--primary-color);
    font-size: 1.25rem;
    width: 24px;
}

.contact-form {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 購物車 */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background-color: white;
    box-shadow: var(--shadow-xl);
    z-index: 1001;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.cart-sidebar.open {
    right: 0;
}

.cart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.cart-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.cart-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.cart-close:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.cart-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.empty-cart {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-cart i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

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

.cart-item-image {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.cart-item-name {
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

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

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

.quantity-btn {
    width: 24px;
    height: 24px;
    border: 1px solid var(--border-color);
    background-color: white;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    transition: var(--transition);
}

.quantity-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.cart-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.cart-total {
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* 回到頂部按鈕 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

/* 頁腳 */
.footer {
    background-color: var(--text-primary);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.contact-info-horizontal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--secondary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.contact-item i {
    width: 16px;
    color: var(--secondary-color);
    flex-shrink: 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

/* 響應式設計 */
@media (max-width: 1024px) {
    .search-input {
        width: 200px;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-description {
        font-size: 1.05rem;
        padding: 0 10px;
    }
    
    .hero-buttons .btn {
        padding: 11px 24px;
        font-size: 0.95rem;
        min-width: 130px;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-logo-img {
        max-height: 50px;
    }

    .hero-logo-img {
        max-width: 220px;
    }
    
    .hero {
        padding: 90px 0 60px;
        min-height: 55vh;
    }
    
    .hero-title {
        font-size: 2.2rem;
        letter-spacing: -0.3px;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
        margin-bottom: 1.3rem;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 2rem;
        padding: 0 5px;
    }
    
    .hero-description::before,
    .hero-description::after {
        font-size: 2rem;
    }
    
    .hero-buttons {
        gap: 1.2rem;
    }
    
    .hero-buttons .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
        min-width: 110px;
        letter-spacing: 0.3px;
    }
    
    .hero-content::after,
    .hero-content::before {
        display: none;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: 1rem 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-item {
        width: 100%;
        text-align: center;
    }

    .nav-link {
        display: block;
        padding: 12px 20px;
    }

    .nav-icons {
        gap: 0.5rem;
    }

    .search-container {
        display: none;
    }

    .section-title {
        font-size: 2rem;
    }

    .category-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .category-card:nth-child(4),
    .category-card:nth-child(5) {
        grid-column: auto;
    }

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

    .cart-sidebar {
        width: 100% !important;
    }

    .timeline {
        padding-left: 1rem;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item::before {
        left: 5px;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .contact-info-horizontal {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    /* 暗色模式下的移動端導航 */
    :root[data-theme="dark"] .nav-menu {
        background-color: var(--bg-secondary);
        border: 1px solid var(--border-color);
    }
    
    @media (prefers-color-scheme: dark) {
        :root:not([data-theme]) .nav-menu {
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-color);
        }
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .nav-container {
        padding: 0 15px;
    }
    
    .nav-logo-img {
        max-height: 40px;
    }
    
    .hero {
        padding: 80px 0 50px;
        min-height: 50vh;
    }
    
    .hero-logo {
        margin-bottom: 1.5rem;
    }
    
    .hero-logo-img {
        max-width: 180px;
    }
    
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 1rem;
        letter-spacing: 0;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 1.2rem;
    }
    
    .hero-subtitle::after {
        width: 50px;
        height: 1.5px;
    }
    
    .hero-description {
        font-size: 0.95rem;
        margin-bottom: 1.8rem;
        padding: 0;
    }
    
    .hero-description::before,
    .hero-description::after {
        font-size: 1.8rem;
    }
    
    .hero-description::before {
        left: -8px;
        top: -3px;
    }
    
    .hero-description::after {
        right: -8px;
        bottom: -12px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.8rem;
    }
    
    .hero-buttons .btn {
        padding: 10px 20px;
        font-size: 0.85rem;
        min-width: 120px;
        letter-spacing: 0.3px;
    }
    
    .product-categories,
    .featured-products,
    .news-section,
    .about-section,
    .contact-section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .category-card,
    .contact-info,
    .contact-form {
        padding: 1.5rem;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 1rem;
        right: 1rem;
    }
}

/* 動畫效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

/* 載入動畫 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(37, 99, 235, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 工具提示 */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-primary);
    color: white;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    font-size: 14px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.tooltip:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-5px);
}