/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 输入框样式重置 */
input, textarea, select, button {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    margin: 0;
    padding: 0;
    border: none;
    outline: none;
    background: none;
    box-sizing: border-box;
}

/* 根变量 */
:root {
    --primary-color: #000;
    --secondary-color: #666;
    --background-color: #fff;
    --border-color: #e5e5e5;
    --text-color: #333;
    --text-muted: #666;
    --link-color: #333;
    --link-hover: #333;
    --hover-color: #004499;
    --success-color: #28a745;
    --error-color: #dc3545;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 680px;
    --line-height: 1.6;
}

/* 基础样式 */
body {
    font-family: var(--font-family);
    line-height: var(--line-height);
    color: var(--text-color);
    background-color: var(--background-color);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器 */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.header {
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 40px;
}

.header-content {
    text-align: center;
}

.site-avatar {
    text-align: center; /* 居中头像 */
    margin-bottom: 3px; /* 和标题之间间距 */
}

.site-avatar img {
    width: 50px;   /* 头像大小，可调 */
    height: 50px;
    border-radius: 50%; /* 圆形头像 */
    object-fit: cover;  /* 图片按比例填充 */
    box-shadow: none; /* 可选阴影 */
}

.site-title {
    font-size: 1.0rem;
    font-weight: 50;
    color: #555;
    margin-bottom: 8px;
    letter-spacing: +0.15em;
    margin: 0;
}

.site-description {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 30px;
    font-weight: 400;
}

.admin-controls {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    background: transparent;
    color: var(--text-color);
    min-height: 44px;
}

.btn-primary {
    background: var(--text-color);
    color: white;
    border-color: var(--text-color);
}

.btn-primary:hover {
    background: var(--text-color);
    border-color: var(--text-color);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
    color: var(--text-color);
}

/* 隐藏类 */
.hidden {
    display: none !important;
}

/* 主内容区域 */
.main-content {
    max-width: 680px;
    margin: 0 auto;
    padding: 0;
}

/* 文章列表 */
.posts {
    margin-top: 0;
}

/* 文章卡片样式 */
.post-card {
    display: flex;
    flex-direction: column;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    margin-bottom: 4rem;
    transition: none;
    box-shadow: none;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 40px;
}

/* .post-card:last-child {
    border-bottom: none;
} */

.post-card:hover {
    box-shadow: none;
    transform: none;
}

.post-card h2 {
    margin: 0 0 1rem 0;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -0.02em;
    text-align: center;
}

.post-card-link {
    text-decoration: none;
    color: inherit;
    display: block; /* 让 a 占满整个区域 */
}

.post-meta {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.post-excerpt {
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 1rem;
    font-size: 1rem;
    opacity: 0.8;
    max-width: 100%;
}

.read-more-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    background: transparent;
    color: var(--text-color);
    border: none;
    padding: 0;
    border-radius: 0;
    font-size: 0.875rem;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    text-transform: none;
    letter-spacing: normal;
}

.read-more-btn:hover {
    background: transparent;
    transform: none;
    box-shadow: none;
    color: var(--link-color);
}

.read-more-btn::after {
    content: '→';
    font-size: 0.875rem;
    transition: transform 0.2s ease;
}

.read-more-btn:hover::after {
    transform: translateX(2px);
}

/* 文章卡片样式已在上方定义 */

.post-content {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-color);
}

.post-content p {
    margin-bottom: 1.2rem;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.post-content h1 { font-size: 1.8rem; }
.post-content h2 { font-size: 1.5rem; }
.post-content h3 { font-size: 1.3rem; }

.post-content ul,
.post-content ol {
    margin-bottom: 1.2rem;
    padding-left: 1.5rem;
}

.post-content li {
    margin-bottom: 0.5rem;
}

.post-content blockquote {
    border-left: 4px solid var(--border-color);
    padding-left: 1rem;
    margin: 1.5rem 0;
    color: var(--secondary-color);
    font-style: italic;
}

.post-content code {
    background-color: #f8f9fa;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.9em;
}

.post-content pre {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.post-content pre code {
    background: none;
    padding: 0;
}

.post-content a {
    color: var(--link-color);
    text-decoration: none;
}

.post-content a:hover {
    text-decoration: underline;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: 1.5rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 写文章表单 */
.post-form {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 40px;
    margin-bottom: 40px;
}

.form-container h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--primary-color);
}

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

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

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 16px;
    font-family: var(--font-family);
    transition: border-color 0.2s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: var(--link-color);
}

/* Markdown 编辑器 */
.markdown-editor {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.editor-tabs {
    display: flex;
    background-color: #f8f9fa;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 12px 20px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--secondary-color);
    transition: all 0.2s ease;
    font-weight: 500;
}

.tab-btn.active {
    background-color: white;
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.tab-btn:hover:not(.active) {
    background-color: #e9ecef;
}

.editor-toolbar {
    display: flex;
    background-color: #f8f9fa;
    border-bottom: 1px solid var(--border-color);
    padding: 8px 12px;
    gap: 8px;
}

.toolbar-btn {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    background-color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s ease;
}

.toolbar-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.editor-content textarea {
    width: 100%;
    border: none;
    border-radius: 0;
    resize: vertical;
    min-height: 300px;
    padding: 16px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
}

.markdown-preview {
    padding: 16px;
    background-color: white;
    min-height: 300px;
    overflow-y: auto;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 30px;
}

/* 页脚 */
.footer {
    margin-top: 80px;
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--secondary-color);
    font-size: 14px;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--secondary-color);
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 0;
}

/* 登录页面 */
.login-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 40px 0;
}

.login-form {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 40px;
}

.login-form .form-group input {
    width: 100% !important;
    height: 48px !important;
    padding: 12px 16px !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 6px !important;
    font-size: 16px !important;
    font-family: var(--font-family) !important;
    transition: border-color 0.2s ease !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    outline: none !important;
    background-color: white !important;
    display: block !important;
    line-height: 1.5 !important;
}

.login-form .form-group input:focus {
    outline: none !important;
    border-color: var(--link-color) !important;
}

/* 特别针对密码输入框 */
.login-form .form-group input[type="password"] {
    width: 100% !important;
    height: 48px !important;
    padding: 12px 16px !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 6px !important;
    font-size: 16px !important;
    font-family: var(--font-family) !important;
    transition: border-color 0.2s ease !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    outline: none !important;
    background-color: white !important;
    display: block !important;
    line-height: 1.5 !important;
}

.login-form .form-actions {
    margin-top: 30px;
}

.login-form .btn {
    width: 100%;
}

/* 文章详情页面 */
.home-link {
    color: inherit;
    text-decoration: none;
}

.home-link:hover {
    color: var(--link-color);
}

.post-detail {
    margin-bottom: 10px;
}

.post-header {
    margin-bottom: 10px;
    padding-bottom: 2px;
}

.post-title {
    text-align: center;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.post-title a {
  text-decoration: none;   /* 去掉下划线 */
  color: inherit;          /* 保持原字体颜色 */
}

.error-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--secondary-color);
}

.error-state p {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .header {
        padding: 40px 0 30px;
    }
    
    .site-title {
        font-size: 1.1rem; /* 变小 */
        font-weight: normal; /* 变淡，可以改成 500 或 lighter */
        color: #555; /* 淡一点的灰色 */
        margin: 0; /* 去掉默认外边距 */
    }
    
    .post-card h2 {
        font-size: 1.5rem;
    }
    
    .post-title {
        font-size: 2rem;
    }
    
    .post-form {
        padding: 24px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .site-title {
        font-size: 1.8rem;
    }
    
    .post-card h2 {
        font-size: 1.3rem;
    }
    
    .post-title {
        font-size: 1.8rem;
    }
    
    .post-form {
        padding: 20px;
    }
} 

html {
    overflow-y: scroll; /* 总是显示垂直滚动条 */
}