/**
 * Preview Styles
 * Rendered Markdown preview and GitHub-style markdown body
 */

/* Preview Pane */
.preview-pane {
    flex: 1;
    min-width: 300px;
    background: var(--preview-bg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.preview-content {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    overflow-x: hidden;
}

/* Markdown Body - GitHub-style rendering */
.markdown-body {
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.7;
    word-wrap: break-word;
}

/* Headings */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
}

.markdown-body h1 {
    font-size: 2em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border-color);
}

.markdown-body h2 {
    font-size: 1.5em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border-color);
}

.markdown-body h3 {
    font-size: 1.25em;
}

.markdown-body h4 {
    font-size: 1em;
}

.markdown-body h5 {
    font-size: 0.875em;
}

.markdown-body h6 {
    font-size: 0.85em;
    color: var(--text-secondary);
}

/* Heading anchors */
.markdown-body .heading-anchor {
    float: left;
    padding-right: 4px;
    margin-left: -20px;
    line-height: 1;
    color: var(--text-muted);
    text-decoration: none;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.markdown-body h1:hover .heading-anchor,
.markdown-body h2:hover .heading-anchor,
.markdown-body h3:hover .heading-anchor,
.markdown-body h4:hover .heading-anchor,
.markdown-body h5:hover .heading-anchor,
.markdown-body h6:hover .heading-anchor {
    opacity: 1;
}

/* Paragraphs */
.markdown-body p {
    margin-top: 0;
    margin-bottom: 16px;
}

/* Links */
.markdown-body a {
    color: var(--preview-link-color);
    text-decoration: none;
}

.markdown-body a:hover {
    text-decoration: underline;
}

/* Bold and Italic */
.markdown-body strong {
    font-weight: 600;
}

.markdown-body em {
    font-style: italic;
}

/* Strikethrough */
.markdown-body del {
    text-decoration: line-through;
    color: var(--text-secondary);
}

/* Inline Code */
.markdown-body code {
    padding: 0.2em 0.4em;
    margin: 0;
    font-size: 85%;
    font-family: var(--font-mono);
    background-color: var(--preview-code-bg);
    border-radius: var(--border-radius-sm);
}

/* Code Blocks */
.markdown-body pre {
    position: relative;
    padding: var(--spacing-md);
    overflow: auto;
    font-size: 85%;
    line-height: 1.45;
    background-color: var(--preview-code-bg);
    border-radius: var(--border-radius-md);
    margin-bottom: 16px;
}

.markdown-body pre code {
    padding: 0;
    margin: 0;
    font-size: 100%;
    background-color: transparent;
    border: 0;
    display: block;
    overflow-x: auto;
}

/* Code block copy button */
.code-block-wrapper {
    position: relative;
}

.copy-code-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    opacity: 0;
    transition: all var(--transition-fast);
}

.code-block-wrapper:hover .copy-code-btn {
    opacity: 1;
}

.copy-code-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.copy-code-btn.copied {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

/* Code language label */
.code-language {
    position: absolute;
    top: 0;
    right: 40px;
    padding: 2px 8px;
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
}

/* Blockquotes */
.markdown-body blockquote {
    padding: 0 1em;
    margin: 0 0 16px;
    color: var(--text-secondary);
    border-left: 4px solid var(--preview-blockquote-border);
    background: var(--preview-blockquote-bg);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.markdown-body blockquote> :first-child {
    margin-top: 0;
}

.markdown-body blockquote> :last-child {
    margin-bottom: 0;
}

/* Lists */
.markdown-body ul,
.markdown-body ol {
    padding-left: 2em;
    margin-top: 0;
    margin-bottom: 16px;
}

.markdown-body ul {
    list-style-type: disc;
}

.markdown-body ol {
    list-style-type: decimal;
}

.markdown-body li {
    margin-top: 0.25em;
}

.markdown-body li+li {
    margin-top: 0.25em;
}

.markdown-body li>p {
    margin-top: 16px;
}

/* Nested lists */
.markdown-body ul ul,
.markdown-body ul ol,
.markdown-body ol ol,
.markdown-body ol ul {
    margin-top: 0;
    margin-bottom: 0;
}

/* Task Lists */
.markdown-body .task-list-item {
    list-style-type: none;
    margin-left: -1.5em;
}

.markdown-body .task-list-item input[type="checkbox"] {
    margin-right: 0.5em;
    vertical-align: middle;
}

/* Tables */
.markdown-body table {
    width: 100%;
    margin-bottom: 16px;
    border-spacing: 0;
    border-collapse: collapse;
    overflow: auto;
}

.markdown-body table th,
.markdown-body table td {
    padding: 6px 13px;
    border: 1px solid var(--preview-table-border);
}

.markdown-body table th {
    font-weight: 600;
    background-color: var(--preview-table-header-bg);
}

.markdown-body table tr:nth-child(2n) {
    background-color: var(--bg-secondary);
}

/* Horizontal Rules */
.markdown-body hr {
    height: 0.25em;
    padding: 0;
    margin: 24px 0;
    background-color: var(--border-color);
    border: 0;
    border-radius: 2px;
}

/* Images */
.markdown-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
}

/* Keyboard */
.markdown-body kbd {
    display: inline-block;
    padding: 3px 5px;
    font-size: 11px;
    line-height: 10px;
    font-family: var(--font-mono);
    color: var(--text-primary);
    vertical-align: middle;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    box-shadow: inset 0 -1px 0 var(--border-color);
}

/* Math (KaTeX) */
.markdown-body .math-block {
    display: block;
    margin: 16px 0;
    text-align: center;
    overflow-x: auto;
}

.markdown-body .math-inline {
    display: inline;
}

/* Mermaid Diagrams */
.markdown-body .mermaid {
    margin: 16px 0;
    text-align: center;
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    overflow-x: auto;
}

/* Emoji */
.markdown-body .emoji {
    height: 1.2em;
    width: 1.2em;
    vertical-align: -0.1em;
}

/* Footnotes */
.markdown-body .footnotes {
    margin-top: 32px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.875em;
}

.markdown-body .footnote-ref {
    font-size: 0.75em;
    vertical-align: super;
}

/* Abbreviations */
.markdown-body abbr {
    text-decoration: underline dotted;
    cursor: help;
}

/* Definition Lists */
.markdown-body dl {
    margin-bottom: 16px;
}

.markdown-body dt {
    font-weight: 600;
    margin-top: 16px;
}

.markdown-body dd {
    margin-left: 2em;
    margin-bottom: 8px;
}

/* Alerts/Admonitions */
.markdown-body .alert {
    padding: var(--spacing-md);
    margin-bottom: 16px;
    border-radius: var(--border-radius-md);
    border-left: 4px solid;
}

.markdown-body .alert-note {
    background: rgba(96, 165, 250, 0.1);
    border-color: var(--info);
}

.markdown-body .alert-tip {
    background: rgba(74, 222, 128, 0.1);
    border-color: var(--success);
}

.markdown-body .alert-warning {
    background: rgba(251, 191, 36, 0.1);
    border-color: var(--warning);
}

.markdown-body .alert-danger {
    background: rgba(248, 113, 113, 0.1);
    border-color: var(--danger);
}

/* Syntax Highlighting (via highlight.js) */
.markdown-body .hljs {
    background: transparent;
}

/* Virtual scrolling container */
.preview-virtual-container {
    position: relative;
}

.preview-virtual-content {
    position: absolute;
    width: 100%;
}