/* /var/www/html/css/style.css */
body {
    font-family: "Verdana", "Arial", sans-serif; /* Server World 常用字體 */
    margin: 0;
    padding: 0;
    background-color: #f2f2f2;
    color: #333;
    line-height: 1.6;
}

/* Header */
header {
    background-color: #ffffff;
    padding: 15px 20px;
    border-bottom: 4px solid #666; /* 頂部加強線條 */
}
header h1 {
    margin: 0;
    font-size: 1.8em;
    color: #000;
}

/* Layout */
.container {
    display: grid;
    grid-template-columns: 280px 1fr; /* 左側固定 280px */
    min-height: 100vh;
}

/* Sidebar */
nav.sidebar {
    background-color: #f2f2f2;
    border-right: 1px solid #ccc;
    padding: 20px 15px;
    font-size: 0.95em;
}
nav.sidebar .category-title {
    font-weight: bold;
    color: #000;
    border-bottom: 1px solid #999;
    display: block;
    margin-top: 20px;
    margin-bottom: 5px;
    padding-bottom: 2px;
}
nav.sidebar ul {
    list-style: none;
    padding-left: 10px;
    margin: 0;
}
nav.sidebar li {
    margin-bottom: 4px;
}
nav.sidebar a {
    text-decoration: none;
    color: #004080; /* 經典深藍連結 */
}
nav.sidebar a:hover {
    text-decoration: underline;
    color: #cc0000;
}

/* Content */
main.content {
    background-color: #ffffff;
    padding: 30px 50px;
    border-left: 1px solid #fff; /* 視覺區隔 */
}
main.content h2 {
    border-bottom: 1px solid #ccc;
    padding-bottom: 10px;
    color: #000;
}
main.content img {
    max-width: 100%; /* 確保圖片不破版 */
    height: auto;
    border: 1px solid #ddd;
    margin: 10px 0;
    padding: 5px;
}

/* Code Block Style */
pre {
    background: #2d2d2d;
    color: #ccc;
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
    font-family: "Consolas", monospace;
}