body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    display: flex;
    height: 100vh;
    color: #333;
    box-sizing: border-box;

    overflow: hidden;
}

.container {
    display: flex;
    width: 100%;
    box-sizing: border-box;

    height: 100vh;
}

/* content styles */
.content {
    flex-grow: 1;
    padding: 40px;
    max-width: 800px;
    box-sizing: border-box;
    margin: 0 auto;

    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.content::-webkit-scrollbar {
    display: none;
}

/* sidebar styles */
.sidebar {
    width: 200px;
    box-sizing: border-box;
    background: #f4f4f4;
    padding: 20px;
    border-right: 1px solid #ddd;
    flex-shrink: 0;
}

.sidebar h2 { margin-top: 0; }

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

.sidebar li { margin-bottom: 10px; }

.sidebar a {
    text-decoration: none;
    color: #555;
    font-weight: 500;
}

.sidebar a:hover { color: #007bff; }

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #ddd;
    }

    .content {
        max-width: 100%;
        padding: 20px;
    }
}