/* NoPUA网站前端样式 */

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

:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --text-color: #333;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: #f5f7fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 10px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

/* 导航栏 */
.site-header {
    background: #fff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: var(--danger-color);
}

.logo i {
    font-size: 28px;
}

.logo h1 {
    font-size: 24px;
    margin: 0;
}

.logo a {
    color: var(--danger-color);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 5px;
}

.main-nav a {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 10px 15px;
    border-radius: 5px;
    color: var(--text-color);
    transition: var(--transition);
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
}

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

.hero-banner h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.hero-banner p {
    font-size: 18px;
    opacity: 0.9;
}

/* 主内容区 */
.main-content {
    padding: 25px 0;
    min-height: calc(100vh - 400px);
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 20px;
}

/* 文章列表 */
.articles-section {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
}

.article-card {
    display: flex;
    gap: 10px;
    padding: 20px;
    margin-bottom: 20px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: var(--transition);
}

.article-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.article-thumbnail {
    flex-shrink: 0;
    width: 200px;
    height: 150px;
    border-radius: 8px;
    overflow: hidden;
}

.article-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-content {
    flex: 1;
}

.article-title {
    font-size: 20px;
    margin-bottom: 5px;
}

.article-title a {
    color: var(--dark-color);
}

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

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.article-excerpt {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.8;
}

.read-more {
    float: right;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 15px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 5px;
    font-size: 14px;
}

.read-more:hover {
    background: var(--secondary-color);
    color: #fff;
}

/* 侧边栏 */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.widget {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.widget h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.popular-list {
    list-style: none;
}

.popular-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.popular-list li:last-child {
    border-bottom: none;
}

.popular-list a {
    color: var(--text-color);
    flex: 1;
}

.popular-list a:hover {
    color: var(--primary-color);
}

.popular-list .views {
    font-size: 12px;
    color: #999;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.page-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-color);
    transition: var(--transition);
}

.page-link:hover,
.page-link.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-state i {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

/* 页脚 */
.site-footer {
    background: var(--dark-color);
    color: #fff;
    padding: 30px 0;
    text-align: center;
    margin-top: 0px;
}

.site-footer p {
    margin: 10px 0;
}

.site-footer a {
    color: #fff;
    margin: 0 10px;
}

.site-footer a:hover {
    color: var(--secondary-color);
}

/* 返回顶部/底部按钮 */
.scroll-buttons {
    position: fixed;
    right: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 999;
}

.scroll-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.scroll-btn:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

.scroll-btn.hidden {
    opacity: 0;
    pointer-events: none;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    margin-top: 20px;
    float: right;
    background: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background: #2980b9;
    color: #fff;
}

.btn-secondary {
    background: #95a5a6;
    color: #fff;
}

.btn-secondary:hover {
    background: #7f8c8d;
    color: #fff;
}

.btn-lg {
    padding: 12px 30px;
    font-size: 16px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 0px;
    }
    
    .article-card {
        flex-direction: column;
        padding: 10px;
    }
    
    .article-thumbnail {
        width: 100%;
        height: 200px;
    }
    
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-banner h2 {
        font-size: 28px;
    }
    
    .scroll-buttons {
        right: 10px;
        bottom: 10px;
    }
    
    .scroll-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
}

/* 文章详情页 */
.article-page .container {
    max-width: 900px;
}

.article-detail {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.article-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.article-header h1 {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-color);
}

.article-body p {
    margin-bottom: 15px;
}

.article-body h2,
.article-body h3 {
    margin: 25px 0 15px;
    color: var(--dark-color);
}

.article-body ul,
.article-body ol {
    margin: 15px 0;
    padding-left: 30px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* 文章导航 */
.article-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 40px 0;
    padding: 20px 0;
    border-top: 2px solid var(--border-color);
    border-bottom: 2px solid var(--border-color);
}

.nav-prev,
.nav-next {
    flex: 1;
    padding: 15px;
    background: var(--light-color);
    border-radius: 8px;
    color: var(--text-color);
    transition: var(--transition);
}

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

.nav-prev {
    text-align: left;
}

.nav-next {
    text-align: right;
}

/* 相关文章 */
.related-articles {
    margin: 40px 0;
}

.related-articles h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    margin-bottom: 20px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.related-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: var(--light-color);
    border-radius: 8px;
    color: var(--text-color);
    transition: var(--transition);
}

.related-item:hover {
    background: var(--primary-color);
    color: #fff;
}

.related-item i {
    font-size: 20px;
}

.related-item span {
    flex: 1;
}

.related-item small {
    font-size: 12px;
    opacity: 0.8;
}

/* 评论区 */
.comments-section {
    margin-top: 40px;
}

.comments-section h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    margin-bottom: 30px;
}

.comment-form {
    background: var(--light-color);
    padding: 10px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.comment-form h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* 滑动验证 */
.captcha-container {
    margin: 20px 0;
}

.captcha-slider {
    position: relative;
    width: 100%;
    height: 50px;
    background: var(--light-color);
    border-radius: 5px;
    overflow: hidden;
}

.captcha-track {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.captcha-text {
    color: #666;
    font-size: 14px;
    user-select: none;
}

.captcha-button {
    position: absolute;
    left: 0;
    top: 0;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
    transition: background 0.3s;
}

.captcha-button:active {
    cursor: grabbing;
}

.captcha-slider.verified .captcha-button {
    background: var(--secondary-color);
}

.captcha-slider.verified .captcha-track {
    background: #d4edda;
}

.captcha-slider.verified .captcha-text {
    color: var(--secondary-color);
}

/* 评论列表 */
.comments-list {
    margin-top: 30px;
}

.no-comments {
    text-align: center;
    padding: 40px;
    color: #999;
}

.comment-item {
    display: flex;
    gap: 15px;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-avatar {
    flex-shrink: 0;
}

.comment-avatar i {
    font-size: 40px;
    color: #999;
}

.comment-content {
    flex: 1;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.comment-header strong {
    color: var(--dark-color);
}

.comment-time {
    font-size: 12px;
    color: #999;
}

.comment-content p {
    color: #666;
    line-height: 1.6;
}

/* 关于页面和投稿页面 */
.page-content {
    padding: 40px 0;
}

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

.page-header h1 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 36px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.page-header .subtitle {
    font-size: 18px;
    color: #666;
}

.content-box {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.about-section {
    margin-bottom: 40px;
}

.about-section h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.about-section p {
    line-height: 1.8;
    margin-bottom: 15px;
}

.feature-list,
.service-list {
    list-style: none;
    margin: 20px 0;
}

.feature-list li,
.service-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.feature-list i,
.service-list i {
    color: var(--secondary-color);
    margin-top: 3px;
}

.danger-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 20px 0;
}

.danger-item {
    padding: 20px;
    background: var(--light-color);
    border-radius: 8px;
    text-align: center;
}

.danger-item i {
    font-size: 40px;
    color: var(--danger-color);
    margin-bottom: 15px;
}

.danger-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.danger-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.protection-list {
    margin: 20px 0;
    padding-left: 30px;
}

.protection-list li {
    margin-bottom: 15px;
    line-height: 1.8;
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 40px;
    border-radius: 10px;
    text-align: center;
}

.cta-section h2 {
    color: #fff;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 16px;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* 投稿页面 */
.submit-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 30px;
}

.submit-info {
    background: var(--light-color);
    padding: 15px;
    border-radius: 10px;
    height: fit-content;
}

.submit-info h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.submit-info ul {
    list-style: none;
}

.submit-info li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.submit-info i {
    color: var(--secondary-color);
    margin-top: 3px;
}

.submit-form-wrapper {
    background: #fff;
    padding: 15px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 5px 30px rgba(0,0,0,0.3);
}

.success-message {
    text-align: center;
}

.success-message i {
    font-size: 64px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.success-message h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.success-message p {
    color: #666;
    margin-bottom: 30px;
}

/* 响应式 - 平板和手机 */
@media (max-width: 768px) {
    /* 修复导航菜单错位 */
    .header-container {
        position: relative;
        padding: 10px 20px;
    }

    .main-content {
        padding: 10px 0;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        z-index: 1000;
        padding: 10px 0;
        border-top: 1px solid var(--border-color);
    }

    .main-nav.open {
        display: block !important;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }

    .main-nav ul li {
        width: 100%;
    }

    .main-nav ul li a {
        display: block;
        padding: 15px 25px;
        border-bottom: 1px solid #f5f5f5;
    }

    .main-nav ul li a:hover {
        background: var(--light-color);
        padding-left: 30px;
    }

    .mobile-menu-toggle {
        display: block;
        font-size: 24px;
        color: var(--primary-color);
        cursor: pointer;
    }
    .articles-section {
        padding: 0px;
        background: unset;
    }
    .article-detail {
        padding: 20px;
    }
    
    .article-header h1 {
        font-size: 24px;
    }
    
    .article-meta {
        font-size: 12px;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .article-navigation {
        flex-direction: column;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .danger-grid {
        grid-template-columns: 1fr;
    }
    
    .submit-container {
        grid-template-columns: 1fr;
    }
    
    .submit-info {
        order: 2;
    }
    
    .submit-form-wrapper {
        order: 1;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .content-box {
        padding: 20px;
    }
    
    .site-footer {
    margin-top: 10px;
    }
}