body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto;
    background: #0d1117;
    color: #c9d1d9;
}

a {
    color: #58a6ff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Container and layout */
.container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: #161b22;
    padding: 20px;
    box-sizing: border-box;
}

.sidebar h2 {
    font-size: 16px;
    color: #f0f6fc;
    margin-top: 0;
}

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

.sidebar li {
    margin: 8px 0;
}

/* Active link highlighting */
.sidebar ul li a.active {
    color: #58a6ff;               /* Highlight color */
    font-weight: bold;             /* Bold text */
    background-color: #161b22;    /* Subtle background */
    border-left: 4px solid #58a6ff; /* Accent bar like <h2> */
    padding-left: 6px;             /* Adjust for visual balance */
}

.content {
    flex: 1;
    padding: 40px;
    max-width: 900px;
}

.box {
    border-left: 4px solid #58a6ff;
    background: #161b22;
    padding: 15px;
    margin: 20px 0;
}

.warn {
    border-color: #f85149;
}

.ok {
    border-color: #3fb950;
}

.code {
    background: #010409;
    padding: 15px;
    font-family: monospace;
    overflow-x: auto;
}