/* 基础样式 */
:root {
    --primary-color: #007bff;
    --bg-color: #f8f9fa;
    --text-color: #333333;
    --text-muted: #666666;
    --border-color: #e0e0e0;
    --card-bg: #ffffff;
    --hover-bg: #f0f0f0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    background: var(--card-bg);
    padding: 15px 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: var(--text-color);
    text-decoration: none;
}

.logo i {
    color: var(--primary-color);
}

.nav-content {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
    justify-content: flex-end;
}

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

nav a {
    text-decoration: none;
    color: var(--text-muted);
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

nav a:hover {
    color: var(--primary-color);
    background: var(--hover-bg);
}

nav a.active {
    color: var(--primary-color);
    font-weight: 500;
}

/* 搜索框样式 */
.nav-search-container {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.nav-search {
    display: flex;
    align-items: center;
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    padding: 5px;
    transition: all 0.3s ease;
}

.nav-search:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.nav-search-input {
    flex: 1;
    border: none;
    outline: none;
    padding: 10px 15px;
    font-size: 14px;
    background: transparent;
    color: var(--text-color);
}

.nav-search-button {
    background: var(--primary-color);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: all 0.3s ease;
    margin-left: 5px;
}

.nav-search-button:hover {
    background: #0056b3;
    transform: scale(1.05);
}

/* 语言选择器样式 */
.nav-language-selector {
    position: relative;
}

.nav-language-btn {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 20px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-color);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}

.nav-language-btn:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
}

.nav-language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    width: 200px;
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    display: none;
    z-index: 1000;
    overflow: hidden;
}

.nav-language-dropdown.active {
    display: block;
}

.language-list {
    max-height: 300px;
    overflow-y: auto;
}

.language-item {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    border-bottom: 1px solid #f5f5f5;
}

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

.language-item:hover {
    background-color: #f8f9fa;
}

.language-item.active {
    background-color: #f0f7ff;
}

.language-flag {
    font-size: 20px;
    min-width: 30px;
    text-align: center;
}

.language-info {
    flex: 1;
}

.language-name {
    font-weight: 500;
    font-size: 14px;
    color: #333333;
}

.language-native {
    font-size: 12px;
    color: #666666;
}

.language-check {
    color: var(--primary-color);
    font-size: 14px;
}

/* 移动端菜单 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-color);
    cursor: pointer;
    padding: 5px;
}

/* 主要内容区域 */
main {
    padding: 30px 20px;
    min-height: calc(100vh - 200px);
}

#content-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* 内容头部 */
.content-header {
    margin-bottom: 30px;
    padding: 20px 0;
}

.page-title {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.page-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* 内容网格 */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.content-card {
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.content-cover-container {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.content-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.content-card:hover .content-cover {
    transform: scale(1.05);
}

.content-info {
    padding: 20px;
}

.content-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-color);
    line-height: 1.4;
}

.content-description {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 15px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.content-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
}

.content-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.content-badge {
    padding: 4px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-channel {
    background: #e3f2fd;
    color: #1565c0;
}

.badge-type {
    background: #f3e5f5;
    color: #7b1fa2;
}

.badge-category {
    background: #e8f5e9;
    color: #2e7d32;
}

.content-date {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 60px 20px;
    font-size: 1.2rem;
    color: var(--text-muted);
}

/* 空状态 */
.empty {
    text-align: center;
    padding: 60px 20px;
    font-size: 1.2rem;
    color: var(--text-muted);
    background: var(--card-bg);
    border-radius: 10px;
    margin: 20px 0;
}

/* 错误状态 */
.error {
    text-align: center;
    padding: 60px 20px;
    font-size: 1.2rem;
    color: #dc3545;
    background: #f8d7da;
    border-radius: 10px;
    margin: 20px 0;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
    padding: 20px 0;
}

.page-btn {
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-btn:hover:not(.disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.page-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 页脚 */
footer {
    background: var(--card-bg);
    padding: 30px 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-color);
}

footer p {
    color: var(--text-muted);
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-content {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        padding: 20px;
        flex-direction: column;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }
    
    .nav-content.active {
        display: flex;
    }
    
    nav ul {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-search-container {
        max-width: 100%;
        width: 100%;
    }
    
    .nav-language-selector {
        width: 100%;
    }
    
    .nav-language-btn {
        width: 100%;
        justify-content: center;
    }
    
    .nav-language-dropdown {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 90%;
        max-width: 300px;
        margin-top: 0;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .page-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 10px;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .nav-language-btn {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .content-card {
        border-radius: 8px;
    }
    
    .content-info {
        padding: 15px;
    }
    
    .content-title {
        font-size: 1.1rem;
    }
}

/* Navbar language selector for article page */
.nav-search {
    display: flex;
    flex: 1;
    max-width: 300px;
    margin: 0 15px;
}

.nav-language-selector {
    position: relative;
}

/* Update navbar layout for language selector */
@media (min-width: 769px) {
    .nav-content {
        display: flex;
        align-items: center;
    }
    
    .nav-language-selector {
        margin-left: 10px;
    }
}

@media (max-width: 768px) {
    .nav-language-selector {
        order: 3;
        width: 100%;
        margin: 15px 0 0 0;
    }
    
    .nav-language-btn {
        width: 100%;
        justify-content: center;
    }
}
/* 在现有的style.css中添加或更新以下样式 */

/* 导航栏布局调整以容纳语言选择器 */
@media (min-width: 769px) {
    .nav-content {
        display: flex;
        align-items: center;
    }
    
    .nav-search {
        flex: 1;
        max-width: 300px;
        margin: 0 15px;
    }
}

@media (max-width: 768px) {
    .nav-language-selector {
        order: 3;
        width: 100%;
        margin: 15px 0 0 0;
    }
    
    .nav-language-btn {
        width: 100%;
        justify-content: center;
    }
}