body {
    font-family: sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

/* 居中内容，并设置最大宽度，以适应大屏幕 */
header, main, footer, section {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: #333;
    color: #fff;
    text-align: center;
    border-bottom: 4px solid #55aaff;
}

header h1 {
    margin: 0;
}

header nav a {
    color: #fff;
    text-decoration: none;
    padding: 10px;
    margin: 0 5px;
}

header nav a:hover {
    background-color: #555;
}

.nav-btn {
    background: none;
    border: 1px solid #fff;
    color: #fff;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9em;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    background-color: #fff;
    color: #333;
}

/* --- 文章列表样式 --- */
.post-summary {
    background-color: #fff;
    border: 1px solid #ddd;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: box-shadow 0.3s ease;
}

.post-summary:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.post-summary h3 {
    margin-top: 0;
    color: #333;
}

.post-meta {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 10px;
}

.read-more {
    text-decoration: none;
    color: #55aaff;
    font-weight: bold;
    display: inline-block;
    margin-top: 10px;
}

.read-more:hover {
    text-decoration: underline;
}

/* --- 文章详情页样式 --- */
.post-full h2 {
    color: #333;
    margin-top: 0;
}

.post-content {
    margin-top: 20px;
    line-height: 1.8; 
}

/* --- 文章元数据容器样式  --- */
.post-meta-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between; 
    align-items: center;
    gap: 15px 20px;
    padding: 15px 0;
    margin-top: 30px; 
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    font-size: 0.9em;
    color: #666;
}

.post-meta-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* 为操作按钮创建一个分组 */
.action-buttons {
    display: flex;
    gap: 15px;
}

.meta-btn {
    background: none;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 4px 12px;
    cursor: pointer;
    font-size: 0.9em;
    color: #666;
    transition: all 0.2s ease;
}

.meta-btn:hover {
    background-color: #f0f0f0;
    border-color: #999;
}

.meta-btn.delete-btn:hover {
    background-color: #ffebee;
    border-color: #e57373;
    color: #c62828;
}

/* --- 评论区样式 --- */
#comments-section {
    margin-top: 20px;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    border-top: 2px solid #eee;
}

.comment {
    border-bottom: 1px solid #eee;
    padding: 15px 0;
}

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

.comment p {
    margin: 5px 0;
}

.comment strong {
    color: #555;
}

/* --- 评论表单样式 --- */
#new-comment-form {
    margin-top: 30px;
}

#new-comment-form h3 {
    margin-bottom: 10px;
}

#new-comment-form textarea {
    width: 100%;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid #ddd;
    font-size: 1em;
    font-family: inherit;
    box-sizing: border-box; 
    min-height: 80px;
    resize: vertical;
}

#new-comment-form input[type="text"] {
    width: 100%;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid #ddd;
    font-size: 1em;
    font-family: inherit;
    box-sizing: border-box;
    margin-bottom: 10px; 
}

#new-comment-form button {
    background-color: #55aaff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.3s ease;
}

#new-comment-form button:hover {
    background-color: #3388dd;
}

/* --- 响应式设计：媒体查询 --- */

/* 当屏幕宽度小于等于 600px 时，应用以下样式 (适配手机) */
@media (max-width: 600px) {
    body {
        font-size: 14px;
    }

    header, main, footer, section {
        padding-left: 15px;
        padding-right: 15px;
    }

    header nav {
        display: flex;
        flex-direction: column; 
        align-items: center; 
    }

    header nav a {
        width: 80%;
        text-align: center;
        margin-bottom: 10px;
    }

    #new-comment-form,
    #new-post-form {
        text-align: center;
    }

    #new-comment-form button,
    #new-post-form button {
        width: 100%;
        padding: 12px; 
    }
}

/* --- 新建文章页面表单样式 --- */
#new-post-form {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    margin-top: 20px;
}

#new-post-form div {
    margin-bottom: 20px;
}

#new-post-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #333;
}

#new-post-form input[type="text"],
#new-post-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1em;
    font-family: inherit;
    box-sizing: border-box;
    transition: border-color 0.2s ease;
}

#new-post-form input[type="text"]:focus,
#new-post-form textarea:focus {
    outline: none;
    border-color: #55aaff;
    box-shadow: 0 0 0 3px rgba(85, 170, 255, 0.2);
}

#new-post-form button {
    width: 100%;
    background-color: #55aaff;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.3s ease;
}

#new-post-form button:hover {
    background-color: #3388dd;
}