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

html, body {
    height: 100%;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    background: #fff;
    color: #333;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* 导航栏 */
.navbar {
    position: fixed;   /* 博客页用固定，主页可调 */
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 10;
    padding: 15px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #fff;
}

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

.nav-links li a {
    color: #fff;
    padding: 8px 12px;
}

.nav-links li a:hover {
    background: rgba(255,255,255,0.2);
    border-radius: 6px;
}


/* 下拉菜单 */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    border-radius: 6px;
    list-style: none;  /* ✅ 去掉前面的点 */
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li a {
    display: block;
    padding: 10px;
    color: #fff;
    text-align: center;
}

.dropdown-menu li a:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 博客页面 */
.blog-wrapper {
    flex: 1;
    padding-top: 100px; /* 避免导航遮挡 */
    width: 100%;
    display: flex;
    justify-content: center;
}

.blog-content {
    width: 100%;
    max-width: 1000px;
    padding: 0 20px;
    line-height: 1.8;
    color: #444;
}

.blog-content ul,
.blog-content ol {
    padding-left: 1.5em;
    margin: 10px 0;
}

.blog-content li {
    margin-bottom: 0.6em;
    line-height: 1.6;
    display: list-item;
}

.blog-content li::marker {
    font-size: 1em;
    color: #333;
    vertical-align: middle;
}

.blog-title {
    font-size: 2rem;
    font-weight: bold;
    margin: 30px 0 20px;
}

.blog-meta {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.blog-content h1,
.blog-content h2,
.blog-content h3,
.blog-content h4 {
    margin: 20px 0 10px;
    font-weight: bold;
}

.blog-content p {
    margin-bottom: 15px;
}

.blog-content img {
    max-width: 100%;
    display: block;
    margin: 10px 0;
}

.blog-content pre {
    background: #f5f5f5;
    padding: 15px;
    overflow: auto;
    border-radius: 6px;
}

.blog-content code {
    background: #f0f0f0;
    padding: 2px 4px;
    border-radius: 4px;
}

.blog-content blockquote {
    display: block;
    margin: 0 0 15px 0;
    padding-left: 15px;
    border-left: 3px solid #ccc;
    color: #666;
    font-style: italic;
    background: #f9f9f9;
}

.blog-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.95rem;
}

/* ✅ 表格样式 */
.blog-content table {border-collapse: collapse; margin: 20px 0; width: 100%;}
.blog-content th, .blog-content td {border: 1px solid #ddd; padding: 8px;}
.blog-content th {background: #f5f5f5; font-weight: bold;}

/* 页脚 */
footer {
    background: #222;
    color: #ccc;
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
}

/* 响应式 */
@media (max-width: 1200px) {
    .navbar .container,
    .blog-content {
        padding: 0 15px;
    }
    .blog-content {
        max-width: 90%;
    }
}

@media (max-width: 768px) {
    .blog-content {
        max-width: 100%;
        padding: 0 10px;
    }
    .nav-links {
        gap: 10px;
    }
}

/* Markdown 特殊居中 */
center {
    display: block;
    text-align: center;
}

.share-buttons {
  display: flex;
  gap: 12px;
  margin: 20px 0 10px;
  justify-content: left;
}

.share-btn {
  border: none;
  color: white;
  border-radius: 6px;   /* 圆角矩形 */
  padding: 8px 14px;   /* 内边距决定按钮大小 */
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;            /* 图标和文字间隙 */
  transition: filter 0.2s, background-color 0.2s;
}

.share-btn.qq {
  background-color: #1da1f2; /* 蓝色 */
}

.share-btn.link {
  background-color: #000000; /* 黑色 */
}

.share-btn:active {
  filter: grayscale(100%) brightness(0.8); /* 点击后变灰一点 */
}

/* 移动端适配 */
.hamburger {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.8rem;
    cursor: pointer;
}

@media (max-width: 900px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -70%;
        height: 100%;
        width: 70%;
        background: rgba(0,0,0,0.95);
        flex-direction: column;
        gap: 0;
        padding-top: 60px;
        transition: right 0.3s;
        z-index: 20;
    }

    .nav-links li {
        width: 100%;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .nav-links li a {
        display: block;
        padding: 15px 20px;
        color: #fff;
    }

    .nav-links.show {
        right: 0;
    }

    .dropdown-menu {
        position: relative;
        top: 0;
        left: 0;
        display: none;
        background: rgba(0,0,0,0.85);
    }

    .dropdown.open .dropdown-menu {
        display: block;
    }
}