/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f8f8f8;
    color: #333;
    line-height: 1.6;
}

/* 头部导航 */
.header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    margin-bottom: 20px;
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #ff2442;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 25px;
    align-items: center;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #ff2442;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #ddd;
}

.btn {
    padding: 8px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: #ff2442;
    color: white;
}

.btn-primary:hover {
    background: #e01e3c;
}

.btn-secondary {
    background: #f0f0f0;
    color: #333;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

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

/* 卡片样式 */
.card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: box-shadow 0.3s;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.card-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.card-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
    background: #ddd;
}

.card-info {
    flex: 1;
}

.card-author {
    font-weight: 600;
    color: #333;
    font-size: 15px;
}

.card-time {
    font-size: 13px;
    color: #999;
}

/* 内容区域 */
.card-content {
    margin-bottom: 15px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

.card-text {
    color: #666;
    line-height: 1.6;
    word-break: break-word;
}

.card-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
}

/* 操作按钮 */
.card-actions {
    display: flex;
    gap: 20px;
    padding-top: 15px;
    border-top: 1px solid #f0f0f0;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    font-size: 14px;
    transition: color 0.3s;
}

.action-btn:hover {
    color: #ff2442;
}

.action-btn.liked {
    color: #ff2442;
}

/* 加载更多 */
.load-more {
    text-align: center;
    padding: 20px;
}

.load-more-btn {
    padding: 10px 30px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
}

.load-more-btn:hover {
    background: #ff2442;
    color: white;
    border-color: #ff2442;
}

/* 响应式 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .card {
        padding: 15px;
    }
}