:root {
    --bg-image: url('background.png'); /* 替换为你的背景图片 */
    --glass-bg: rgba(255, 255, 255, 0.2);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-color: #333;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.dark-theme {
    --glass-bg: rgba(0, 0, 0, 0.3);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-color: #fff;
    --shadow: 0 4px 6px rgba(255, 255, 255, 0.1);
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    color: var(--text-color);
    overflow-x: hidden;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: var(--bg-image);
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.glass-panel, .glass-btn {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 1000;
}

.nav-left h1 {
    margin: 0;
}

.nav-right {
    display: flex;
    gap: 10px;
}

.glass-btn {
    padding: 10px 20px;
    cursor: pointer;
    color: var(--text-color);
}

.left-nav {
    position: fixed;
    left: 0;
    top: 60px;
    width: 60px;
    height: calc(100vh - 60px);
    padding: 20px 10px;
    z-index: 1000;
    transition: width 0.3s ease;
    overflow: hidden;
}

.left-nav:hover {
    width: 200px;
    padding: 20px;
}

.left-nav ul {
    list-style: none;
    padding: 0;
}

.left-nav a {
    color: var(--text-color);
    text-decoration: none;
    display: block;
    padding: 10px;
    border-radius: 5px;
    transition: background 0.3s;
}

.left-nav a:hover {
    background: var(--glass-bg);
}

.content {
    margin-left: 80px;
    margin-top: 80px;
    padding: 20px;
}

#markdown-content, .title-section, #tools-list {
    margin-bottom: 20px;
}

.title-section h1 {
    padding: 20px;
    margin: 0;
}

#markdown-render {
    padding: 20px;
    line-height: 1.6;
}

#markdown-render h1 {
    font-size: 2em;
    margin-bottom: 0.5em;
}

#markdown-render h2 {
    font-size: 1.5em;
    margin-bottom: 0.5em;
}

#markdown-render p {
    margin-bottom: 1em;
}

#markdown-render strong {
    font-weight: bold;
}

#markdown-render em {
    font-style: italic;
}

#categories {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.category:hover {
    transform: translateY(-5px);
}

.category {
    padding: 20px;
    transition: transform 0.618s;
}

.category h3 {
    margin-top: 0;
}

.category ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
}

.category li {
    list-style: none;
}

.link-btn {
    display: block;
    text-align: left;
    padding: 15px;
    color: var(--text-color);
    text-decoration: none;
    transition: transform 0.2s;
}

.link-btn:hover {
    transform: translateY(-10px);
}

.link-btn h4 {
    margin: 0 0 5px 0;
    font-size: 18px;
}

.link-btn p {
    margin: 0;
    font-size: 14px;
    opacity: 0.8;
}