:root {
    --primary-color: #3498db;
    --secondary-color: #29b4b9;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --dark-gray: #777;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    line-height: 1.6;
}

.tutorial-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--light-gray);
    padding: 20px;
    border-right: 1px solid var(--medium-gray);
}

.sidebar-title {
    margin-top: 0;
    color: var(--primary-color);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--medium-gray);
}

.content {
    flex: 1;
    padding: 20px 40px;
    max-width: 800px;
    margin: 0 auto;
}

.tutorial-item {
    margin-bottom: 15px;
}

.tutorial-header.active{
    font-weight: bold;
}

.tutorial-header {
    color: var(--primary-color);
    cursor: pointer;
    padding: 5px 0;
}

.tutorial-pages {
    margin-left: 15px;
    border-left: 2px solid var(--medium-gray);
    padding-left: 10px;
}

.page-link {
    display: block;
    padding: 5px 0;
    color: var(--text-color);
    text-decoration: none;
}

.page-link:hover, .page-link.active {
    color: var(--primary-color);
}

#breadcrumbs {
    margin-bottom: 20px;
    color: var(--dark-gray);
}

.breadcrumb {
    color: var(--dark-gray);
    text-decoration: none;
}

.breadcrumb:hover {
    text-decoration: underline;
}

.breadcrumb-separator {
    margin: 0 5px;
}

#markdown-content {
    overflow-wrap: break-word;
    word-break: break-word;
    hyphens: auto;
}

#markdown-content h1, 
#markdown-content h2, 
#markdown-content h3 {
    color: var(--primary-color);
}

#markdown-content pre {
    background-color: var(--light-gray);
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
}

#markdown-content code {
    font-family: 'Courier New', Courier, monospace;
}

#markdown-content blockquote {
    border-left: 3px solid var(--primary-color);
    padding-left: 15px;
    margin-left: 0;
    color: var(--dark-gray);
}

#markdown-content img {
    max-width: 100%;
    height: auto;
}

.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--medium-gray);
}

.pagination button {
    padding: 8px 15px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.pagination button:hover {
    background-color: var(--secondary-color);
}

.pagination button:disabled {
    background-color: var(--medium-gray);
    cursor: not-allowed;
}

/* Ensure all text elements wrap */
.tutorial-header, .page-link, #breadcrumbs, #markdown-content * {
    overflow-wrap: break-word;
    word-break: break-word;
}

/* Prevent code blocks from overflowing */
#markdown-content pre {
    white-space: pre-wrap; /* Wrap code */
    word-break: break-all;
}


/* Mobile-First Media Queries */
@media (max-width: 768px) {
    /* Stack sidebar and content vertically */
    .tutorial-container {
        flex-direction: column;
    }
    
    /* Full-width sidebar */
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--medium-gray);
    }
    
    /* Adjust content padding */
    .content {
        padding: 20px;
        margin-left: 0;
    }
    
    /* Mobile navbar adjustments */
    .navbar-brand {
        flex-wrap: wrap;
    }
    .navbar-caption-wrap {
        font-size: 0.9rem;
    }
    
    /* Mobile footer */
    .mobile-footer {
        flex-direction: column;
        gap: 15px;
    }
    #logocsjt img {
        height: 2.5rem;
    }
    
    /* Pagination buttons */
    .pagination {
        flex-direction: column;
        gap: 10px;
    }
    #prev-btn, #next-btn {
        width: 100%;
    }
    
    /* Hide desktop-only elements */
    .navbar-logo:last-child {
        display: none;
    }
}

@media (max-width: 480px) {
    /* Reduce padding on smaller screens */
    .sidebar, .content {
        padding: 15px;
    }
    
    /* Font size adjustments */
    .sidebar-title, #tutorial-title {
        font-size: 1.5rem;
    }
    
    /* Mobile menu items */
    .nav-item {
        margin-bottom: 5px;
    }
}