/* Base styles to prevent overflow */
        .lesson-markdown-content {
            max-width: 100%;
            overflow-wrap: break-word;
            word-wrap: break-word;
            word-break: break-word;
        }

        .lesson-markdown-content * {
            max-width: 100%;
        }

        .lesson-markdown-content h1,
        .lesson-markdown-content h2,
        .lesson-markdown-content h3 {
            color: var(--text-primary);
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }
        .lesson-markdown-content h1 {
            font-size: 1.8rem;
            border-bottom: 2px solid var(--border);
            padding-bottom: 0.5rem;
        }
        .lesson-markdown-content h2 {
            font-size: 1.5rem;
        }
        .lesson-markdown-content h3 {
            font-size: 1.3rem;
        }
        .lesson-markdown-content p {
            margin-bottom: 1rem;
        }
        .lesson-markdown-content ul,
        .lesson-markdown-content ol {
            margin-left: 1.5rem;
            margin-bottom: 1rem;
        }
        .lesson-markdown-content li {
            margin-bottom: 0.5rem;
        }
        .lesson-markdown-content code {
            background: var(--surface);
            padding: 0.2rem 0.4rem;
            border-radius: 4px;
            font-family: 'Courier New', monospace;
            font-size: 0.9em;
        }
        .lesson-markdown-content pre {
            background: var(--surface);
            padding: 1rem;
            border-radius: 8px;
            overflow-x: auto;
            margin-bottom: 1rem;
            border: 1px solid var(--border);
        }
        .lesson-markdown-content pre code {
            background: none;
            padding: 0;
            font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
            font-size: 0.9rem;
            line-height: 1.4;
            white-space: pre;
            display: block;
            color: var(--text-primary);
        }
        .lesson-markdown-content strong {
            font-weight: 600;
            color: var(--vocab-highlight);
            background: var(--vocab-bg);
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .lesson-markdown-content strong:hover {
            background: var(--vocab-bg-hover);
            transform: translateY(-1px);
        }
        .lesson-markdown-content em {
            font-style: italic;
        }

        /* Link styles */
        .lesson-markdown-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color 0.2s ease, opacity 0.2s ease;
        }

        .lesson-markdown-content a:hover {
            color: var(--primary-color);
            opacity: 0.9;
        }

        .lesson-markdown-content a:visited {
            color: var(--accent);
            opacity: 0.85;
        }
        .lesson-markdown-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 1rem 1rem 1rem 1.25rem;
            margin: 1.5rem 0;
            border-radius: 8px;
            background: var(--surface);
            color: var(--text-primary);
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            overflow-wrap: break-word;
            word-wrap: break-word;
        }

        /* Callout box paragraph spacing */
        .lesson-markdown-content blockquote p:first-child {
            margin-top: 0;
        }
        .lesson-markdown-content blockquote p:last-child {
            margin-bottom: 0;
        }

        /* Emoji in blockquotes should be larger and prominent */
        .lesson-markdown-content blockquote p:first-child::first-line {
            font-size: 1.1em;
            font-weight: 500;
        }

        /* Table styles */
        .lesson-markdown-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            background: var(--surface);
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .lesson-markdown-content table th {
            background: var(--background);
            color: var(--text-primary);
            font-weight: 600;
            text-align: left;
            padding: 0.75rem 1rem;
            border-bottom: 2px solid var(--border);
        }

        .lesson-markdown-content table td {
            padding: 0.75rem 1rem;
            border-bottom: 1px solid var(--border);
            color: var(--text-primary);
        }

        .lesson-markdown-content table td:first-child,
        .lesson-markdown-content table th:first-child {
            white-space: nowrap;
        }

        .lesson-markdown-content table tr:last-child td {
            border-bottom: none;
        }

        .lesson-markdown-content table tr:hover {
            background: var(--background);
        }

        /* Button styles */
        .complete-button:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            background: var(--text-secondary) !important;
        }

        /* Mobile responsive styles */
        @media (max-width: 768px) {
            .study-container {
                padding-inline: 0.75rem !important;
            }

            .study-container .container {
                padding-inline: 0.5rem !important;
            }

            .back-button {
                margin-bottom: 1rem !important;
                padding: 0.625rem 1rem !important;
                font-size: 0.9rem !important;
            }

            #lessonContent {
                max-width: 100% !important;
                padding: 0 !important;
            }

            .lesson-container {
                padding: 1.25rem !important;
                border-radius: 8px !important;
            }

            .lesson-header {
                font-size: 1.5rem !important;
                margin: 0 0 0.75rem 0 !important;
                line-height: 1.3 !important;
                word-wrap: break-word !important;
                overflow-wrap: break-word !important;
            }

            .lesson-description {
                font-size: 0.95rem !important;
                line-height: 1.5 !important;
            }

            .lesson-content-box {
                margin: 1.5rem 0 !important;
                padding: 1rem !important;
            }

            .lesson-markdown-content {
                font-size: 0.95rem !important;
                line-height: 1.6 !important;
            }

            .lesson-markdown-content h1 {
                font-size: 1.4rem !important;
            }

            .lesson-markdown-content h2 {
                font-size: 1.25rem !important;
            }

            .lesson-markdown-content h3 {
                font-size: 1.1rem !important;
            }

            .lesson-markdown-content pre {
                padding: 0.75rem !important;
                overflow-x: auto !important;
                -webkit-overflow-scrolling: touch !important;
                max-width: 100% !important;
            }

            .lesson-markdown-content pre code {
                font-size: 0.85rem !important;
                white-space: pre !important;
                word-wrap: normal !important;
            }

            .lesson-markdown-content code {
                font-size: 0.85em !important;
                word-wrap: break-word !important;
            }

            .lesson-footer {
                padding-top: 1.5rem !important;
                margin-top: 1.5rem !important;
            }

            .practice-box {
                padding: 0.75rem !important;
                flex-direction: column !important;
                text-align: center !important;
                gap: 0.5rem !important;
            }

            .complete-button {
                padding: 1rem !important;
                font-size: 0.95rem !important;
                line-height: 1.4 !important;
            }

            .lesson-markdown-content blockquote {
                padding: 0.75rem !important;
                margin: 1rem 0 !important;
            }

            .lesson-markdown-content table {
                font-size: 0.85rem !important;
                display: block !important;
                overflow-x: auto !important;
                -webkit-overflow-scrolling: touch !important;
                width: 100% !important;
            }

            .lesson-markdown-content table th,
            .lesson-markdown-content table td {
                padding: 0.5rem !important;
                min-width: 80px !important;
            }

            .lesson-markdown-content ul,
            .lesson-markdown-content ol {
                margin-left: 1rem !important;
            }
        }

        /* Extra small screens (iPhone SE, small phones) */
        @media (max-width: 375px) {
            .lesson-container {
                padding: 1rem !important;
            }

            .lesson-header {
                font-size: 1.35rem !important;
            }

            .lesson-description {
                font-size: 0.9rem !important;
            }

            .lesson-markdown-content {
                font-size: 0.9rem !important;
            }

            .complete-button {
                padding: 0.875rem !important;
                font-size: 0.9rem !important;
            }
        }