/*
Theme Name: WebNav
Theme URI: https://example.com/webnav
Author: WebNav Team
Author URI: https://example.com
Description: 一款简约清爽的网址导航WordPress主题，支持网站采集、前台提交、分类展示等功能
Version: 1.0.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: webnav
*/

/* ==================== 基础重置 ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==================== 变量定义 ==================== */
:root {
    --primary-color: #4a90d9;
    --primary-hover: #357abd;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --bg-color: #f5f7fa;
    --card-bg: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #e8e8e8;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

/* ==================== 头部样式 ==================== */
.site-header {
    background: #fff;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.site-branding {
    display: flex;
    align-items: center;
    gap: 12px;
}

.site-logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.site-title a:hover {
    color: var(--primary-color);
}

/* 导航菜单 */
.main-navigation {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

/* 搜索框 */
.header-search {
    position: relative;
    width: 280px;
}

.header-search input {
    width: 100%;
    padding: 10px 40px 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: 25px;
    font-size: 0.9rem;
    background: var(--bg-color);
    transition: var(--transition);
}

.header-search input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.1);
}

.header-search button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    color: var(--text-muted);
    transition: var(--transition);
}

.header-search button:hover {
    color: var(--primary-color);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ==================== 主内容区域 ==================== */
.site-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
    min-height: calc(100vh - 200px);
}

/* ==================== 分类区块 ==================== */
.category-section {
    margin-bottom: 40px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.category-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
    font-weight: 600;
}

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.category-count {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: var(--bg-color);
    padding: 4px 12px;
    border-radius: 20px;
}

/* ==================== 网站卡片网格 ==================== */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.site-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.site-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), #6ab0ff);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.site-card:hover::before {
    transform: scaleX(1);
}

.site-card-inner {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.site-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    object-fit: cover;
    flex-shrink: 0;
    background: var(--bg-color);
}

.site-icon-fallback {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: #fff;
    flex-shrink: 0;
}

.site-info {
    flex: 1;
    min-width: 0;
}

.site-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.site-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==================== 搜索页面 ==================== */
.search-page-header {
    text-align: center;
    padding: 40px 0;
}

.search-page-header h1 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.search-page-header .search-count {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.search-form-large {
    max-width: 600px;
    margin: 30px auto;
    position: relative;
}

.search-form-large input {
    width: 100%;
    padding: 16px 60px 16px 24px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    transition: var(--transition);
}

.search-form-large input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(74, 144, 217, 0.1);
}

.search-form-large button {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-color);
    color: #fff;
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-form-large button:hover {
    background: var(--primary-hover);
}

/* ==================== 提交页面 ==================== */
.submit-page {
    max-width: 700px;
    margin: 0 auto;
}

.submit-page-header {
    text-align: center;
    margin-bottom: 40px;
}

.submit-page-header h1 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.submit-page-header p {
    color: var(--text-secondary);
}

.submit-form {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group label .required {
    color: var(--danger-color);
    margin-left: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    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(74, 144, 217, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.form-submit-btn {
    width: 100%;
    padding: 14px 24px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.form-submit-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.form-message {
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.form-message.show {
    display: block;
}

/* ==================== 页脚 ==================== */
.site-footer {
    background: #fff;
    border-top: 1px solid var(--border-color);
    padding: 30px 20px;
    margin-top: 60px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

/* ==================== 后台采集页面样式 ==================== */
.nav-crawler-wrap {
    max-width: 800px;
}

.nav-crawler-wrap h1 {
    margin-bottom: 20px;
}

.crawler-form {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.crawler-form .form-field {
    margin-bottom: 20px;
}

.crawler-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.crawler-form input[type="url"],
.crawler-form input[type="number"],
.crawler-form select {
    width: 100%;
    max-width: 500px;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.crawler-form .submit-btn {
    background: #2271b1;
    color: #fff;
    border: none;
    padding: 10px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.crawler-form .submit-btn:hover {
    background: #135e96;
}

.crawler-results {
    margin-top: 30px;
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.crawler-results h2 {
    margin-bottom: 15px;
    font-size: 1.2em;
}

.crawler-log {
    background: #f6f7f7;
    border: 1px solid #c3c4c7;
    border-radius: 4px;
    padding: 15px;
    max-height: 400px;
    overflow-y: auto;
    font-family: monospace;
    font-size: 13px;
    line-height: 1.6;
}

.crawler-log .log-item {
    margin-bottom: 8px;
    padding: 6px 10px;
    border-radius: 3px;
}

.crawler-log .log-item.success {
    background: #d4edda;
    color: #155724;
}

.crawler-log .log-item.error {
    background: #f8d7da;
    color: #721c24;
}

.crawler-log .log-item.info {
    background: #d1ecf1;
    color: #0c5460;
}

.crawler-stats {
    display: flex;
    gap: 30px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f0f6fc;
    border-radius: 4px;
}

.crawler-stats .stat-item {
    display: flex;
    flex-direction: column;
}

.crawler-stats .stat-label {
    font-size: 12px;
    color: #666;
    margin-bottom: 4px;
}

.crawler-stats .stat-value {
    font-size: 24px;
    font-weight: 600;
    color: #2271b1;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 60px;
    }

    .site-title {
        font-size: 1.25rem;
    }

    .main-navigation {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        gap: 0;
    }

    .main-navigation.active {
        display: flex;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: 12px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu a::after {
        display: none;
    }

    .header-search {
        width: 100%;
        margin-top: 15px;
    }

    .mobile-menu-toggle {
        display: flex;
    }

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

    .site-main {
        padding: 20px 15px;
    }

    .category-title {
        font-size: 1.1rem;
    }

    .submit-form {
        padding: 25px 20px;
    }

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

@media (max-width: 480px) {
    .site-card-inner {
        gap: 12px;
    }

    .site-icon,
    .site-icon-fallback {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .site-name {
        font-size: 0.95rem;
    }

    .site-desc {
        font-size: 0.8rem;
    }
}

/* ==================== 工具类 ==================== */
.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==================== 分页样式 ==================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 50px;
    gap: 8px;
}

.pagination ul {
    display: flex;
    gap: 8px;
    list-style: none;
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.pagination .current {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    font-weight: 500;
}

.pagination .dots {
    background: transparent;
    border: none;
}

/* ==================== 加载动画 ==================== */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--text-secondary);
}