* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --bg: #fef9f0;
    --text: #3a2a1a;
    --primary: #f4a7bb;
    --secondary: #f7d6e0;
    --card-bg: #ffffff;
    --shadow: 0 8px 24px rgba(0,0,0,0.08);
    --radius: 16px;
    --accent: #e07c8e;
    --navbar-bg: #ffffff;
    --footer-bg: #fce4ec;
    --input-bg: #fff;
    --border: #f0d4dc;
}

[data-theme="dark"] {
    --bg: #1a1a2e;
    --text: #e0e0e0;
    --primary: #f4a7bb;
    --secondary: #2d2d44;
    --card-bg: #252540;
    --shadow: 0 8px 24px rgba(0,0,0,0.4);
    --accent: #ff8a9e;
    --navbar-bg: #1f1f35;
    --footer-bg: #1f1f35;
    --input-bg: #2d2d44;
    --border: #3a3a55;
}

[data-template="tech"] {
    --primary: #6c63ff;
    --secondary: #e8e6ff;
    --accent: #4a42d4;
}

[data-template="fashion"] {
    --primary: #e91e63;
    --secondary: #fce4ec;
    --accent: #c2185b;
}

[data-template="food"] {
    --primary: #ff7043;
    --secondary: #fbe9e7;
    --accent: #d84315;
}

body {
    background: var(--bg);
    color: var(--text);
    transition: background 0.3s, color 0.3s;
    line-height: 1.6;
}

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

/* 导航栏 */
.navbar {
    background: var(--navbar-bg);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 10px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: color 0.3s;
    padding: 5px 10px;
    border-radius: 8px;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.icon-btn {
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background 0.3s;
}

.icon-btn:hover {
    background: var(--secondary);
}

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

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

/* 搜索与筛选 */
.search-filter {
    background: var(--secondary);
    padding: 40px 0;
    text-align: center;
}

.search-filter h1 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text);
}

.search-box {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-box input {
    width: 60%;
    max-width: 500px;
    padding: 12px 20px;
    border: 2px solid var(--border);
    border-radius: 30px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text);
    outline: none;
    transition: border 0.3s;
}

.search-box input:focus {
    border-color: var(--primary);
}

.search-box button {
    padding: 12px 30px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-size: 1rem;
    transition: opacity 0.3s;
}

.search-box button:hover {
    opacity: 0.9;
}

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

.filters select, .price-range input {
    padding: 10px 15px;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text);
    font-size: 0.95rem;
    outline: none;
}

.price-range {
    display: flex;
    align-items: center;
    gap: 5px;
}

.price-range input {
    width: 100px;
}

/* 热力图 */
.heatmap {
    padding: 40px 0;
}

.heatmap h2 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary);
}

.heatmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 4px;
    max-width: 800px;
    margin: 0 auto;
}

.heatmap-cell {
    aspect-ratio: 1;
    border-radius: 4px;
    transition: transform 0.2s;
    cursor: pointer;
}

.heatmap-cell:hover {
    transform: scale(1.2);
}

/* 数据统计 */
.stats {
    background: var(--secondary);
    padding: 30px 0;
}

.stats .container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
}

.stat-item {
    text-align: center;
    font-size: 1.1rem;
}

.stat-item span {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

/* 内容网格 */
.content-grid {
    padding: 50px 0;
}

.content-grid h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

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

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.12);
}

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

.card-body {
    padding: 20px;
}

.badge {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 10px;
}

.card-body h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text);
}

.card-body p {
    font-size: 0.9rem;
    color: var(--text);
    opacity: 0.8;
    margin-bottom: 12px;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.rating {
    color: #f39c12;
}

.price {
    font-weight: 700;
    color: var(--accent);
}

.views {
    color: var(--text);
    opacity: 0.6;
}

.btn-share {
    width: 100%;
    padding: 8px;
    background: var(--secondary);
    border: none;
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    transition: background 0.3s;
}

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

/* 页脚 */
footer {
    background: var(--footer-bg);
    padding: 30px 0;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
}

.footer-links a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--primary);
}

/* 登录页面 */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg);
}

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

.login-container h2 {
    margin-bottom: 20px;
    color: var(--primary);
}

.login-container input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text);
}

.login-container button {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
}

.login-container a {
    display: block;
    margin-top: 15px;
    color: var(--text);
}

.error {
    color: #e74c3c;
    margin-bottom: 15px;
}

/* 管理后台 */
.admin-page {
    background: var(--bg);
}

.admin-container {
    display: flex;
    min-height: calc(100vh - 120px);
}

.admin-sidebar {
    width: 250px;
    background: var(--secondary);
    padding: 20px;
}

.admin-sidebar h3 {
    margin-bottom: 15px;
    color: var(--primary);
}

.admin-sidebar ul {
    list-style: none;
}

.admin-sidebar li {
    margin-bottom: 10px;
}

.admin-sidebar a {
    color: var(--text);
    text-decoration: none;
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background 0.3s;
}

.admin-sidebar a:hover {
    background: var(--primary);
    color: #fff;
}

.admin-main {
    flex: 1;
    padding: 30px;
}

.admin-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    max-width: 800px;
    margin-bottom: 30px;
}

.admin-form input, .admin-form select, .admin-form textarea {
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: 10px;
    background: var(--input-bg);
    color: var(--text);
    font-size: 0.95rem;
}

.admin-form textarea {
    grid-column: span 2;
    min-height: 100px;
}

.admin-form button {
    grid-column: span 2;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
}

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

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--secondary);
    color: var(--text);
}

.btn-danger {
    background: #e74c3c;
    color: #fff;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
}

.btn-edit {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
}

.alert {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

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

/* 响应式 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: var(--navbar-bg);
        padding: 20px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .search-box input {
        width: 80%;
    }

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

    .admin-container {
        flex-direction: column;
    }

    .admin-sidebar {
        width: 100%;
    }

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

    .admin-form textarea, .admin-form button {
        grid-column: span 1;
    }
}