/* 全局变量 */
:root {
    --primary: #2c3e50;
    --secondary: #e74c3c;
    --bg: #f5f6fa;
    --card-bg: #ffffff;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --shadow: 0 4px 15px rgba(0,0,0,0.1);
    --radius: 12px;
    --transition: all 0.3s ease;
    --font: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

[data-theme="dark"] {
    --primary: #ecf0f1;
    --secondary: #e74c3c;
    --bg: #1a1a2e;
    --card-bg: #16213e;
    --text: #ecf0f1;
    --text-light: #bdc3c7;
    --shadow: 0 4px 15px rgba(0,0,0,0.5);
}

/* 模板样式 */
[data-template="tech"] {
    --primary: #0f0c29;
    --secondary: #302b63;
    --bg: #e0e5ec;
    --card-bg: #ffffff;
}
[data-template="fashion"] {
    --primary: #ff6b6b;
    --secondary: #c0392b;
    --bg: #fff5f5;
    --card-bg: #ffffff;
}
[data-template="food"] {
    --primary: #e67e22;
    --secondary: #d35400;
    --bg: #fef9e7;
    --card-bg: #ffffff;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: var(--transition);
}

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

/* 头部 */
.header {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 8px;
    transition: var(--transition);
}

.nav a:hover, .nav a.active {
    background: var(--primary);
    color: #fff;
}

.header-actions {
    display: flex;
    gap: 10px;
}

.btn-icon {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.btn-icon:hover {
    background: var(--primary);
    color: #fff;
}

.hamburger {
    display: none;
}

/* 英雄区 */
.hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.search-bar {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
}

.search-bar input {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 30px 0 0 30px;
    font-size: 1rem;
}

.search-bar button {
    padding: 12px 20px;
    background: var(--secondary);
    color: #fff;
    border: none;
    border-radius: 0 30px 30px 0;
    cursor: pointer;
}

/* 筛选区 */
.filters {
    background: var(--card-bg);
    padding: 20px 0;
    box-shadow: var(--shadow);
}

.filter-group {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-group label {
    font-weight: 500;
}

.filter-group select {
    padding: 8px 12px;
    border: 1px solid var(--text-light);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
}

.stats-info {
    text-align: center;
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.stats-info span {
    margin: 0 10px;
}

/* 网格 */
.gallery {
    padding: 40px 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.card-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

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

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

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    opacity: 0;
    transition: var(--transition);
}

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

.btn-view {
    padding: 10px 20px;
    background: #fff;
    color: var(--primary);
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
}

.btn-share {
    background: #fff;
    border: none;
    padding: 10px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
}

.card-body {
    padding: 15px;
}

.card-body h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.card-body p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--text-light);
}

.price {
    font-weight: bold;
    color: var(--secondary);
}

/* 热力图 */
.stats-heatmap {
    padding: 40px 0;
    background: var(--card-bg);
}

.heatmap {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    justify-content: center;
}

.heatmap-item {
    padding: 10px 15px;
    border-radius: 8px;
    color: #fff;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.heatmap-item:hover {
    transform: scale(1.05);
}

/* 页脚 */
.footer {
    background: var(--primary);
    color: #fff;
    padding: 40px 0 0;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.footer-section h4 {
    margin-bottom: 15px;
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
}

.footer-section a:hover {
    color: #fff;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.social-links a {
    font-size: 1.5rem;
}

.footer-bottom {
    text-align: center;
    padding: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 30px;
}

.footer-bottom a {
    color: #bdc3c7;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--card-bg);
        box-shadow: var(--shadow);
    }

    .nav.active {
        display: flex;
    }

    .nav ul {
        flex-direction: column;
        align-items: center;
    }

    .hamburger {
        display: block;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .filter-group {
        flex-direction: column;
        align-items: stretch;
    }

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

/* 表单 */
.form {
    max-width: 400px;
    margin: 20px auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form input, .form textarea {
    padding: 12px;
    border: 1px solid var(--text-light);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
}

.form button {
    padding: 12px;
    background: var(--secondary);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.alert {
    padding: 10px;
    border-radius: 8px;
    margin: 10px 0;
}

.alert.error {
    background: #f8d7da;
    color: #721c24;
}

.alert.success {
    background: #d4edda;
    color: #155724;
}

/* 管理后台 */
.admin-main {
    padding: 40px 0;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.admin-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.admin-card h3 {
    margin-bottom: 15px;
}

.admin-card form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.admin-card textarea {
    resize: vertical;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
}

.admin-table th, .admin-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--bg);
}

.admin-table th {
    background: var(--primary);
    color: #fff;
}

.btn-delete {
    color: var(--secondary);
    cursor: pointer;
}

.auth-forms {
    max-width: 500px;
    margin: 0 auto;
}

/* 内页通用 */
.page-hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.2rem;
}

.page-content {
    padding: 40px 0;
}

.page-content h2 {
    margin-bottom: 20px;
}

.page-content p {
    margin-bottom: 15px;
    line-height: 1.8;
}

/* 分享按钮 */
.share-buttons {
    display: flex;
    gap: 10px;
    margin: 20px 0;
}

.share-buttons a {
    padding: 10px 15px;
    border-radius: 8px;
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
}

.share-weibo { background: #e6162d; }
.share-weixin { background: #07c160; }
.share-qq { background: #12b7f5; }
.share-twitter { background: #1da1f2; }

/* 关于/联系等页面样式复用 */
.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

/* 细节页 */
.detail-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.detail-image img {
    width: 100%;
    border-radius: var(--radius);
}

@media (max-width: 768px) {
    .detail-container {
        grid-template-columns: 1fr;
    }
}

/* 博客列表 */
.blog-list {
    display: grid;
    gap: 20px;
}

.blog-item {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* 常见问题 */
.faq-item {
    background: var(--card-bg);
    padding: 15px 20px;
    border-radius: var(--radius);
    margin-bottom: 10px;
    cursor: pointer;
}

.faq-item h3 {
    display: flex;
    justify-content: space-between;
}

.faq-answer {
    display: none;
    margin-top: 10px;
    color: var(--text-light);
}

.faq-item.active .faq-answer {
    display: block;
}

/* 隐私政策 */
.privacy-content {
    max-width: 800px;
    margin: 0 auto;
}

/* 注册/登录页面 */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.auth-box {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
}

.auth-box h2 {
    text-align: center;
    margin-bottom: 20px;
}

.social-login {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 20px 0;
}

.social-login a {
    padding: 10px 20px;
    border-radius: 8px;
    color: #fff;
    text-decoration: none;
}

.social-login .weibo { background: #e6162d; }
.social-login .weixin { background: #07c160; }
.social-login .qq { background: #12b7f5; }

/* 作品集页面额外样式 */
.gallery-page .grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

/* 购物车（如果需要） */
.cart-btn {
    position: relative;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--secondary);
    color: #fff;
    border-radius: 50%;
    padding: 2px 6px;
    font-size: 0.7rem;
}

/* 评分星星 */
.stars {
    color: #f1c40f;
}

/* 加载动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    animation: fadeIn 0.5s ease;
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }