/* 可配置化企业网站样式系统 */

/* ===== CSS变量定义 ===== */
:root {
    /* 主题色彩 - 可通过JavaScript动态修改 */
    --primary-color: #8B4513;
    --secondary-color: #D2691E;
    --accent-color: #FFD700;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* 背景色彩 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #343a40;
    --bg-light: #f8f9fa;
    
    /* 文字色彩 */
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #ffffff;
    --text-muted: #999999;
    
    /* 边框色彩 */
    --border-color: #e9ecef;
    --border-light: #f1f3f4;
    
    /* 阴影效果 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
    --shadow-xl: 0 12px 24px rgba(0,0,0,0.25);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* 字体 */
    --font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    
    /* 过渡动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== 全局样式重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

/* ===== 通用容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px var(--spacing-md);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-header h2 {
    font-size: var(--font-size-xxl);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 导航栏样式 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-normal);
    border-bottom: 1px solid var(--border-light);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-logo img {
    height: 40px;
    width: auto;
    border-radius: var(--radius-sm);
}

.nav-logo span {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    position: relative;
    background: none;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -2px;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    transition: width 0.3s cubic-bezier(.4,0,.2,1);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: none;
}

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

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

/* ===== 主横幅样式 ===== */
.hero {
    height: 100vh;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.8), rgba(210, 105, 30, 0.6));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

/* ===== 按钮样式 ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::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: var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: var(--text-light);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* ===== 产品卡片样式 ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.product-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    cursor: pointer;
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

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

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

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    opacity: 0;
    transition: var(--transition-normal);
}

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

.quick-view-btn,
.add-to-cart-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    background: var(--primary-color);
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: var(--font-size-sm);
}

.quick-view-btn:hover,
.add-to-cart-btn:hover {
    background: var(--secondary-color);
    transform: scale(1.05);
}

.product-info {
    padding: var(--spacing-lg);
}

.product-info h3 {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.product-info p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.price {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--primary-color);
}

/* ===== 特色功能样式 ===== */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    display: block;
}

.feature-item h3 {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

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

/* ===== 统计数据样式 ===== */
.stats {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-lg);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.stat-label {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

/* ===== 页脚样式 ===== */
.footer {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--border-light) 100%);
    color: var(--text-secondary);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-lg);
    box-shadow: 0 -2px 16px 0 rgba(0,0,0,0.04);
}
.footer-content {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    padding: 0 var(--spacing-md);
}
.footer-section {
    flex: 1 1 200px;
    min-width: 180px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: center;
    gap: var(--spacing-sm);
}
.footer-section h3,
.footer-section h4 {
    color: var(--primary-color);
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    letter-spacing: 1px;
}
.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-section li {
    margin-bottom: 4px;
}
.footer-section a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s;
    font-size: var(--font-size-sm);
    border-radius: 4px;
    padding: 2px 6px;
}
.footer-section a:hover {
    color: var(--primary-color);
    background: rgba(139,69,19,0.08);
    text-decoration: underline;
}
.social-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-sm);
}
.social-links a {
    color: var(--primary-color);
    font-size: 1.3em;
    transition: color 0.2s;
}
.social-links a:hover {
    color: var(--accent-color);
}
.footer-bottom {
    border-top: 1px solid var(--border-light);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-sm);
    text-align: center;
    color: #aaa;
    font-size: 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    letter-spacing: 0.5px;
    background: rgba(255,255,255,0.03);
}
@media (max-width: 900px) {
    .footer-content {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    .footer-section {
        min-width: 0;
        width: 100%;
        align-items: center;
        text-align: center;
    }
}
@media (max-width: 480px) {
    .footer {
        padding: var(--spacing-md) 0 var(--spacing-xs);
        font-size: 12px;
    }
    .footer-content {
        padding: 0 var(--spacing-xs);
    }
    .footer-section h3,
    .footer-section h4 {
        font-size: var(--font-size-sm);
    }
}

/* ===== 模态框样式 ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-md);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header h3 {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--danger-color);
}

.modal-body {
    padding: var(--spacing-lg);
}

/* ===== 通知样式 ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    color: var(--text-light);
    font-weight: 500;
    z-index: 3000;
    animation: slideInRight 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.notification.success {
    background: var(--success-color);
}

.notification.error {
    background: var(--danger-color);
}

.notification.warning {
    background: var(--warning-color);
}

.notification.info {
    background: var(--info-color);
}

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

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: var(--font-size-lg);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px var(--spacing-sm);
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: var(--font-size-xl);
    }

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

/* ===== 可配置化主题切换 ===== */
.theme-jewelry {
    --primary-color: #8B4513;
    --secondary-color: #D2691E;
    --accent-color: #FFD700;
}

.theme-tea {
    --primary-color: #2E8B57;
    --secondary-color: #3CB371;
    --accent-color: #90EE90;
}

.theme-fashion {
    --primary-color: #FF69B4;
    --secondary-color: #FF1493;
    --accent-color: #FFB6C1;
}

/* ===== 加载动画 ===== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
    width: 3px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* ===== 暗色主题全局样式 ===== */
body.dark-theme {
    background: #222 !important;
    color: #eee !important;
}
body.dark-theme .section-header h2,
body.dark-theme .section-header p,
body.dark-theme .nav-link,
body.dark-theme .btn,
body.dark-theme .feature-card,
body.dark-theme .team-member,
body.dark-theme .footer,
body.dark-theme .timeline-content,
body.dark-theme .stat-item,
body.dark-theme .culture-item,
body.dark-theme .honor-card,
body.dark-theme .product-card {
    background: #333 !important;
    color: #eee !important;
    border-color: #444 !important;
}
body.dark-theme .btn-primary {
    background: #444 !important;
    color: #ffd700 !important;
}
body.dark-theme .btn-secondary {
    background: #555 !important;
    color: #ffd700 !important;
}