/* HTML/CSS Tutorial Viewer Styles */

.html-css-viewer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 16px;
    background-color: var(--color-bg-secondary);
    border-radius: 8px;
    height: 500px; /* Fixed height instead of min-height */
    box-sizing: border-box;
}

/* Code Panel (Left Side) */
.html-css-viewer .code-panel {
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    min-height: 0; /* Fix for flexbox children */
    position: relative;
    padding: 0 !important; /* Override global .code-panel padding from styles.css */
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    overflow-x: auto;
    position: relative;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}

.tab-nav::-webkit-scrollbar {
    height: 6px;
}

.tab-nav::-webkit-scrollbar-track {
    background: transparent;
}

.tab-nav::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
}

.tab-nav::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

/* Light theme scrollbars for tab-nav */
.theme-light .tab-nav {
    scrollbar-color: rgba(0, 0, 0, 0.1) transparent;
}

.theme-light .tab-nav::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.08);
}

.theme-light .tab-nav::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.15);
}

.tab-button {
    padding: 10px 20px;
    background-color: var(--color-bg-secondary);
    border: none;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 0.875rem;
    white-space: nowrap;
    transition: background-color 0.2s, color 0.2s;
    border-bottom: 2px solid transparent;
    position: relative;
    margin-right: 2px;
}

.tab-button:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text);
}

.tab-button.active {
    color: var(--color-text);
    background-color: var(--color-bg);
    border-bottom-color: var(--color-accent);
}

/* CSS tab that's being rendered */
.tab-button.css-active {
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    font-weight: 600;
}

.tab-button.css-active.active {
    background-color: var(--color-bg);
    border-bottom-color: var(--color-accent);
}

/* Tab indicator for rendered CSS */
.tab-button.css-active::after {
    content: '●';
    position: absolute;
    top: 50%;
    right: 8px;
    transform: translateY(-50%);
    color: var(--color-accent);
    font-size: 8px;
}

/* Theme Switcher, Font Size Button, and Reset Button */
.theme-button,
.font-size-button,
.reset-button {
    padding: 10px 16px;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 1rem;
    white-space: nowrap;
    transition: background-color 0.2s, color 0.2s;
}

.reset-button {
    margin-left: auto;
    font-size: 1.25rem;
}

.add-css-button {
    padding: 8px 14px;
    background: none;
    border: 1px dashed var(--color-border, #424242);
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: bold;
    margin: 0 4px;
    border-radius: 4px;
    transition: all 0.2s;
}

.add-css-button:hover {
    background: var(--color-hover, rgba(255, 255, 255, 0.05));
    border-color: var(--color-primary, #61afef);
    color: var(--color-text);
}

.font-size-button {
    font-weight: 600;
}

.theme-button:hover,
.font-size-button:hover,
.reset-button:hover {
    background-color: var(--color-bg-hover);
}

/* Theme Modal */
.theme-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.theme-modal.show {
    display: flex;
}

.theme-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.theme-modal-content {
    position: relative;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.theme-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

.theme-modal-header h3 {
    margin: 0;
    font-size: 1.125rem;
    color: var(--color-text);
}

.theme-modal-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 1.5rem;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.theme-modal-close:hover {
    background-color: var(--color-bg-hover);
}

.theme-modal-body {
    padding: 20px;
    overflow-y: auto;
}

.theme-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.theme-option {
    padding: 12px 16px;
    background-color: var(--color-bg-secondary);
    border: 2px solid transparent;
    color: var(--color-text);
    cursor: pointer;
    text-align: center;
    font-size: 0.875rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.theme-option:hover {
    background-color: var(--color-bg-hover);
    border-color: var(--color-border);
}

.theme-option.active {
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
    font-weight: 600;
}

/* Font Size Modal */
.font-size-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.font-size-modal.show {
    display: flex;
}

.font-size-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.75);
}

.font-size-modal-content {
    position: relative;
    background-color: #1e1e1e;
    border: 1px solid #444;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    max-width: 400px;
    width: 90%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.font-size-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid #444;
}

.font-size-modal-header h3 {
    margin: 0;
    font-size: 1.125rem;
    color: #e0e0e0;
}

.font-size-modal-close {
    background: none;
    border: none;
    color: #888;
    cursor: pointer;
    font-size: 1.5rem;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.font-size-modal-close:hover {
    background-color: #333;
}

.font-size-modal-body {
    padding: 30px 20px;
}

.font-size-control {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.font-size-control label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #e0e0e0;
    font-size: 0.875rem;
}

.font-size-value {
    font-weight: 600;
    color: #007acc;
    font-size: 1rem;
}

#font-size-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #3c3c3c;
    outline: none;
    -webkit-appearance: none;
}

#font-size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #007acc;
    cursor: pointer;
    transition: background-color 0.2s;
    border: 2px solid #fff;
}

#font-size-slider::-webkit-slider-thumb:hover {
    background: #005a9e;
    box-shadow: 0 0 0 4px rgba(0, 122, 204, 0.3);
}

#font-size-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #007acc;
    cursor: pointer;
    border: 2px solid #fff;
    transition: background-color 0.2s;
}

#font-size-slider::-moz-range-thumb:hover {
    box-shadow: 0 0 0 4px rgba(0, 122, 204, 0.3);
}

#font-size-slider::-moz-range-track {
    background: #3c3c3c;
    height: 8px;
    border-radius: 4px;
}

.font-size-marks {
    display: flex;
    justify-content: space-between;
    color: #888;
    font-size: 0.75rem;
}

/* Code Content Area */
.tab-content {
    flex: 1;
    overflow: hidden;
    position: relative;
    border: none;
    background-color: var(--color-code-bg);
    min-height: 0; /* Fix for flexbox children */
    width: 100%;
}

.tab-pane {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    z-index: 0;
}

.tab-pane.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 1;
}

/* CodeMirror wrapper */
.codemirror-wrapper {
    height: 100%;
    width: 100%;
    overflow: hidden;
    margin: 0;
    padding: 0;
    position: relative;
}

/* CodeMirror overrides for our viewer */
.html-css-viewer .CodeMirror {
    height: 100%;
    width: 100%;
    font-family: var(--font-mono);
    font-size: 14px; /* Increased from 13px */
    line-height: 1.6; /* Increased from 1.5 for better readability */
    border-radius: 0;
    margin: 0;
    border: none;
    position: relative !important; /* Stay inside container */
}

/* Removed - scrollbar styling moved to CodeMirror-scroll section */

/* Darcula theme adjustments for dark mode */
.html-css-viewer .cm-s-darcula.CodeMirror {
    background-color: #2B2B2B;
    color: #A9B7C6;
    font-size: 14px; /* Ensure font size is consistent */
}

/* Fix CodeMirror scroll and sizing */
.html-css-viewer .CodeMirror-scroll {
    overflow-x: auto !important;
    overflow-y: auto !important;
    height: 100%;
}

/* Ensure horizontal scrollbar is visible */
.html-css-viewer .CodeMirror-sizer {
    min-width: fit-content !important;
}

.html-css-viewer .CodeMirror-hscrollbar,
.html-css-viewer .CodeMirror-vscrollbar {
    display: block !important;
}

.html-css-viewer .CodeMirror-hscrollbar {
    height: auto !important;
    overflow-x: scroll !important;
    overflow-y: hidden !important;
}

.html-css-viewer .CodeMirror-vscrollbar {
    overflow-y: scroll !important;
    overflow-x: hidden !important;
}

/* Style CodeMirror native scrollbar elements */
.html-css-viewer .CodeMirror-hscrollbar::-webkit-scrollbar,
.html-css-viewer .CodeMirror-vscrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.html-css-viewer .CodeMirror-hscrollbar::-webkit-scrollbar-track,
.html-css-viewer .CodeMirror-vscrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.html-css-viewer .CodeMirror-hscrollbar::-webkit-scrollbar-thumb,
.html-css-viewer .CodeMirror-vscrollbar::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
}

.html-css-viewer .CodeMirror-hscrollbar::-webkit-scrollbar-thumb:hover,
.html-css-viewer .CodeMirror-vscrollbar::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

/* Light theme for CodeMirror native scrollbars */
.theme-light .html-css-viewer .CodeMirror-hscrollbar::-webkit-scrollbar-thumb,
.theme-light .html-css-viewer .CodeMirror-vscrollbar::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.08);
}

.theme-light .html-css-viewer .CodeMirror-hscrollbar::-webkit-scrollbar-thumb:hover,
.theme-light .html-css-viewer .CodeMirror-vscrollbar::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.15);
}

/* Style scrollbars for the CodeMirror-scroll container */
.html-css-viewer .CodeMirror-scroll {
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}

.html-css-viewer .CodeMirror-scroll::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.html-css-viewer .CodeMirror-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.html-css-viewer .CodeMirror-scroll::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
}

.html-css-viewer .CodeMirror-scroll::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.html-css-viewer .CodeMirror-scroll::-webkit-scrollbar-corner {
    background: transparent;
}

/* Light theme scrollbars */
.theme-light .html-css-viewer .CodeMirror-scroll {
    scrollbar-color: rgba(0, 0, 0, 0.1) transparent;
}

.theme-light .html-css-viewer .CodeMirror-scroll::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.08);
}

.theme-light .html-css-viewer .CodeMirror-scroll::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.15);
}

.html-css-viewer .cm-s-darcula .CodeMirror-gutters {
    background-color: #313335;
    border-right: 1px solid #313335;
}

.html-css-viewer .cm-s-darcula .CodeMirror-linenumber {
    color: #606366;
}

.html-css-viewer .cm-s-darcula .CodeMirror-cursor {
    border-left: 1px solid #A9B7C6;
}

.html-css-viewer .cm-s-darcula .CodeMirror-selected,
.html-css-viewer .cm-s-darcula .CodeMirror-line::selection,
.html-css-viewer .cm-s-darcula .CodeMirror-line > span::selection,
.html-css-viewer .cm-s-darcula .CodeMirror-line > span > span::selection {
    background: #214283;
}

/* Remove underline and italic from HTML tags and CSS selectors */
.html-css-viewer .cm-s-darcula span.cm-tag {
    font-style: normal !important;
    text-decoration: none !important;
}

.html-css-viewer .cm-s-darcula span.cm-qualifier {
    font-style: normal !important;
    text-decoration: none !important;
}

.html-css-viewer .cm-s-darcula span.cm-builtin {
    font-style: normal !important;
    text-decoration: none !important;
}

.html-css-viewer .cm-s-darcula span.cm-def {
    font-style: normal !important;
    text-decoration: none !important;
}

/* Light theme adjustments - override Dracula for light mode */
.theme-light .html-css-viewer .cm-s-darcula.CodeMirror {
    background-color: #fafafa;
    color: #383a42;
}

/* Light theme scrollbars now handled in CodeMirror-scroll section above */

.theme-light .html-css-viewer .cm-s-darcula .CodeMirror-gutters {
    background-color: #fafafa;
    border-right: 1px solid #e1e4e8;
}

.theme-light .html-css-viewer .cm-s-darcula .CodeMirror-linenumber {
    color: #9d9d9f;
}

.theme-light .html-css-viewer .cm-s-darcula .CodeMirror-cursor {
    border-left: solid 2px #383a42;
}

.theme-light .html-css-viewer .cm-s-darcula.CodeMirror-focused .CodeMirror-selected,
.theme-light .html-css-viewer .cm-s-darcula .CodeMirror-line::selection,
.theme-light .html-css-viewer .cm-s-darcula .CodeMirror-line > span::selection,
.theme-light .html-css-viewer .cm-s-darcula .CodeMirror-line > span > span::selection {
    background: #e5e5e6;
}

/* Override syntax colors for light theme */
.theme-light .html-css-viewer .cm-s-darcula span.cm-keyword { color: #a626a4; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-atom { color: #986801; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-number { color: #986801; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-def { color: #4078f2; font-style: normal; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-variable { color: #383a42; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-property { color: #4078f2; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-operator { color: #383a42; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-comment { color: #a0a1a7; font-style: italic; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-string { color: #50a14f; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-string-2 { color: #50a14f; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-meta { color: #a626a4; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-qualifier { color: #e45649; font-style: normal; text-decoration: none; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-builtin { color: #c18401; font-style: normal; text-decoration: none; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-bracket { color: #383a42; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-tag { color: #e45649; font-style: normal; text-decoration: none; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-attribute { color: #986801; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-hr { color: #999; }
.theme-light .html-css-viewer .cm-s-darcula span.cm-link { color: #4078f2; }

/* Override Prism token backgrounds specifically for HTML */
.html-css-viewer .token {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

/* Ensure all Prism elements have transparent backgrounds and no borders */
.html-css-viewer pre[class*="language-"],
.html-css-viewer code[class*="language-"] {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    font-size: 13px !important; /* Consistent font size */
    line-height: 1.5 !important;
    tab-size: 4 !important;
    -moz-tab-size: 4 !important;
}

.html-css-viewer .token.tag,
.html-css-viewer .token.attr-name,
.html-css-viewer .token.attr-value,
.html-css-viewer .token.punctuation,
.html-css-viewer .token.doctype,
.html-css-viewer .token.comment,
.html-css-viewer .token.prolog {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

/* Render Panel (Right Side) */
.render-panel {
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    border-radius: 6px;
    overflow: visible;
    border: 1px solid var(--color-border);
    position: relative;
}

/* Render Tab Navigation */
.render-nav {
    display: flex;
    justify-content: center;
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 4px;
}

.view-toggle {
    display: flex;
    gap: 4px;
    background-color: var(--color-bg);
    border-radius: 4px;
    padding: 2px;
}

.view-button,
.export-button,
.preview-button {
    padding: 6px 16px;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    border-radius: 3px;
    transition: background-color 0.2s, color 0.2s;
}

.view-button:hover,
.export-button:hover,
.preview-button:hover {
    color: var(--color-text);
}

.view-button.active {
    background-color: var(--color-accent);
    color: white;
}

/* Render Frame Container */
.render-content {
    flex: 1;
    position: relative;
    background-color: #c0c0c0;
    /* Darker gray so white pages are clearly visible */
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

/* Subtle scrollbars for render iframe */
.render-iframe {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.1) transparent;
}

.render-iframe::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.render-iframe::-webkit-scrollbar-track {
    background: transparent;
}

.render-iframe::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.08);
    border-radius: 3px;
}

.render-iframe::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.15);
}

.render-frame {
    background-color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: width 0.3s ease;
    height: 100%;
}

.render-frame.full-page {
    width: 100%;
}

.render-frame.half-page {
    width: 50%;
}

.render-iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* Fullwidth mode adjustments */
.fullwidth-mode .html-css-viewer {
    height: 600px; /* Taller height in fullwidth mode */
}

/* Responsive Design */
@media (max-width: 1024px) {
    .html-css-viewer {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
        height: 800px; /* Taller for stacked layout */
    }

    .render-frame.half-page {
        width: 75%;
    }
}

@media (max-width: 768px) {
    .html-css-viewer {
        padding: 10px;
        gap: 10px;
    }

    .tab-button {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

    code[contenteditable] {
        padding: 12px;
        font-size: 0.8rem;
    }

    .render-frame.half-page {
        width: 90%;
    }
}

/* Dark theme adjustments */
.theme-dark .render-content {
    background-color: #2d2d2d;
}

.theme-dark .render-frame {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Color variables for active CSS indication */
:root {
    --color-accent-light: rgba(59, 130, 246, 0.1);
}

.theme-dark {
    --color-accent-light: rgba(59, 130, 246, 0.2);
}

/* Loading state */
.render-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Empty state */
.empty-state {
    color: var(--color-text-secondary);
    text-align: center;
    padding: 40px;
    font-size: 0.875rem;
}

/* Code Toggle Button */
.code-toggle-btn {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 56px;
    background: #2d2d2d;
    border: 1px solid #3c3c3c;
    border-left: none;
    border-radius: 0 6px 6px 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #e0e0e0;
    font-size: 14px;
    z-index: 100;
    transition: background 0.2s;
}

.code-toggle-btn:hover {
    background: #3c3c3c;
}

.code-toggle-btn .arrow {
    line-height: 1;
    transition: transform 0.3s ease;
}

/* Arrow rotates when collapsed */
.html-css-viewer.code-collapsed .code-toggle-btn .arrow {
    transform: rotate(180deg);
}

/* Code Panel Transition */
.html-css-viewer .code-panel {
    transition: width 0.3s ease, opacity 0.3s ease, min-width 0.3s ease;
}

/* Collapsed Code Panel State */
.html-css-viewer.code-collapsed {
    grid-template-columns: 0fr 1fr;
    transition: grid-template-columns 0.3s ease;
}

.html-css-viewer.code-collapsed .code-panel {
    overflow: hidden;
    width: 0;
    min-width: 0;
    opacity: 0;
    padding: 0;
    border: none;
}

/* Prism will handle syntax highlighting colors */