/* ==========================================================================
   Rendered Markdown preview
   ========================================================================== */

.preview-scroll {
    position: relative;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.markdown-preview {
    max-width: 720px;
    margin: 0 auto;
    padding: 28px 44px 56px;
    font-family: var(--font-ui);
    font-size: var(--preview-font-size);
    line-height: 1.85;
    color: var(--text-body);
    overflow-wrap: break-word;
}

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

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

.markdown-preview ::selection {
    background: var(--selection);
}

/* --- Headings ------------------------------------------------------------ */

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3,
.markdown-preview h4,
.markdown-preview h5,
.markdown-preview h6 {
    margin: 1.9em 0 0.75em;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-strong);
    scroll-margin-top: 16px;
}

.markdown-preview h1 {
    margin: 1.2em 0 0.4em;
    font-size: 2.2em;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.markdown-preview h2 {
    padding-bottom: 0.45em;
    border-bottom: 1px solid var(--rule);
    font-size: 1.42em;
    letter-spacing: -0.01em;
}

.markdown-preview h3 { font-size: 1.2em; }
.markdown-preview h4 { font-size: 1.06em; }
.markdown-preview h5 { font-size: 1em; }
.markdown-preview h6 { font-size: 0.94em; color: var(--muted); }

/* --- Blocks -------------------------------------------------------------- */

.markdown-preview p,
.markdown-preview ul,
.markdown-preview ol,
.markdown-preview dl,
.markdown-preview blockquote,
.markdown-preview .code-block,
.markdown-preview .table-wrap,
.markdown-preview .math-block {
    margin: 0 0 1em;
}

.markdown-preview strong {
    font-weight: 600;
    color: var(--text-strong);
}

.markdown-preview a {
    color: var(--link);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-decoration-color: color-mix(in oklab, var(--link) 40%, transparent);
    text-underline-offset: 3px;
    transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

.markdown-preview a:hover {
    color: var(--link-hover);
    text-decoration-color: currentColor;
}

.markdown-preview mark {
    padding: 1px 4px;
    border-radius: 4px;
    background: var(--mark-bg);
    color: var(--mark-fg);
}

.markdown-preview hr {
    height: 6px;
    margin: 28px 0;
    border: 0;
    background-image: radial-gradient(var(--dot) 1.2px, transparent 1.7px);
    background-size: 10px 6px;
    background-position: center;
}

.markdown-preview img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
}

/* --- Lists --------------------------------------------------------------- */

.markdown-preview ul,
.markdown-preview ol {
    padding-left: 22px;
}

.markdown-preview ul { list-style-type: disc; }
.markdown-preview ol { list-style-type: decimal; }
.markdown-preview ul ul { list-style-type: circle; }
.markdown-preview ul ul ul { list-style-type: square; }
.markdown-preview ol ol { list-style-type: lower-alpha; }
.markdown-preview ol ol ol { list-style-type: lower-roman; }

.markdown-preview li {
    margin: 0.15em 0;
}

.markdown-preview li::marker {
    color: var(--marker);
}

.markdown-preview li > ul,
.markdown-preview li > ol {
    margin: 0.15em 0 0;
}

.markdown-preview .task-list-item {
    list-style: none;
    margin-left: -22px;
}

.markdown-preview .task-list-item > ul,
.markdown-preview .task-list-item > ol {
    margin-left: 28px;
}

.markdown-preview .task-check {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    margin: 0 10px 0 0;
    vertical-align: -3px;
    border: 1.5px solid var(--border-strong);
    border-radius: 5px;
    background: var(--surface);
    opacity: 1;
}

.markdown-preview .task-check:checked {
    border-color: var(--ink);
    background: var(--ink) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 5 5 9-10'/%3E%3C/svg%3E") center / 12px no-repeat;
}

:root[data-theme="dark"] .markdown-preview .task-check:checked {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230E1213' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 5 5 9-10'/%3E%3C/svg%3E");
}

.markdown-preview .task-list-item.is-done {
    color: var(--muted-2);
    text-decoration: line-through;
    text-decoration-color: var(--dot);
}

/* --- Blockquote ---------------------------------------------------------- */

.markdown-preview blockquote {
    position: relative;
    padding: 14px 18px 14px 50px;
    border-radius: 14px;
    background: var(--surface-muted);
    color: var(--text-soft);
}

.markdown-preview blockquote::before {
    content: "";
    position: absolute;
    left: 18px;
    top: calc(14px + (1.85em - 20px) / 2);
    width: 20px;
    height: 20px;
    background: var(--accent);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M7 7h4v4c0 3-1.5 5-4 6'/%3E%3Cpath d='M14 7h4v4c0 3-1.5 5-4 6'/%3E%3C/svg%3E") center / contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M7 7h4v4c0 3-1.5 5-4 6'/%3E%3Cpath d='M14 7h4v4c0 3-1.5 5-4 6'/%3E%3C/svg%3E") center / contain no-repeat;
}

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

.markdown-preview blockquote blockquote {
    margin-top: 0.6em;
    background: var(--surface);
}

/* --- Inline code --------------------------------------------------------- */

.markdown-preview code {
    padding: 2px 6px;
    margin: 0 1px;
    border-radius: 6px;
    background: var(--inline-code-bg);
    color: var(--warm);
    font-family: var(--font-mono);
    font-size: 0.86em;
}

/* --- Code blocks --------------------------------------------------------- */

.markdown-preview .code-block {
    overflow: hidden;
    border: 1px solid var(--code-border);
    border-radius: 14px;
    background: var(--code-bg);
}

.code-block-head {
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 6px 0 16px;
    border-bottom: 1px solid var(--code-head-border);
    font-size: 12.5px;
    line-height: 1;
    color: var(--muted);
}

.code-lang {
    font-family: var(--font-mono);
}

.code-copy {
    height: 32px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    gap: 6px;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-soft);
    font-size: 12.5px;
}

.code-copy:hover {
    background: var(--hover);
}

.code-copy.is-copied {
    color: var(--accent);
}

.code-block-body {
    display: flex;
    padding: 12px 0;
    font-family: var(--font-mono);
    font-size: 0.87em;
    line-height: 24px;
}

.code-block-body .line-numbers {
    flex: none;
    min-width: 44px;
    padding: 0 14px 0 10px;
    text-align: right;
    color: var(--faint);
    white-space: pre;
    user-select: none;
}

.code-block-body pre {
    flex: 1;
    min-width: 0;
    margin: 0;
    padding: 0 16px 0 0;
    overflow-x: auto;
    font: inherit;
    color: var(--text-control);
}

.markdown-preview pre code {
    display: block;
    padding: 0;
    margin: 0;
    border-radius: 0;
    background: transparent;
    color: inherit;
    font-size: inherit;
}

/* highlight.js theme, matched to the design palette */
.hljs-comment,
.hljs-quote {
    color: var(--muted);
    font-style: italic;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-doctag,
.hljs-name,
.hljs-meta .hljs-keyword {
    color: var(--accent);
}

.hljs-string,
.hljs-regexp,
.hljs-addition,
.hljs-meta .hljs-string,
.hljs-template-tag,
.hljs-template-variable {
    color: var(--warm);
}

.hljs-number,
.hljs-symbol,
.hljs-bullet,
.hljs-variable.constant_,
.hljs-attr,
.hljs-attribute {
    color: var(--number);
}

.hljs-title,
.hljs-title.function_,
.hljs-title.class_,
.hljs-section,
.hljs-type,
.hljs-built_in {
    font-weight: 500;
    color: var(--text-strong);
}

.hljs-meta,
.hljs-selector-class,
.hljs-selector-id,
.hljs-property {
    color: var(--link);
}

.hljs-deletion {
    color: var(--danger);
}

.hljs-emphasis {
    font-style: italic;
}

.hljs-strong {
    font-weight: 600;
}

/* --- Tables -------------------------------------------------------------- */

.markdown-preview .table-wrap {
    overflow-x: auto;
    border: 1px solid var(--code-border);
    border-radius: var(--radius);
}

.markdown-preview table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.94em;
}

.markdown-preview th,
.markdown-preview td {
    padding: 10px 16px;
    text-align: left;
    border-bottom: 1px solid var(--code-border);
}

.markdown-preview th[align="center"],
.markdown-preview td[align="center"] {
    text-align: center;
}

.markdown-preview th[align="right"],
.markdown-preview td[align="right"] {
    text-align: right;
}

.markdown-preview th + th,
.markdown-preview td + td {
    border-left: 1px solid var(--code-border);
}

.markdown-preview thead tr {
    background: var(--surface-muted);
}

.markdown-preview th {
    font-weight: 600;
    color: var(--text-strong);
}

.markdown-preview tbody tr:last-child td {
    border-bottom: 0;
}

/* --- Table of contents --------------------------------------------------- */

.markdown-preview .toc {
    margin: 0 0 28px;
    padding: 14px 18px 12px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    background: var(--surface-muted);
}

.toc-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    line-height: 1.6;
    color: var(--muted);
}

.markdown-preview .toc ul {
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.94em;
    line-height: 1.95;
}

.markdown-preview .toc ul ul {
    padding-left: 18px;
    font-size: 1em;
}

.markdown-preview .toc li {
    margin: 0;
}

.markdown-preview .toc > ul > li > a {
    font-weight: 500;
}

.markdown-preview .toc a {
    position: relative;
    color: var(--text-body);
    text-decoration: none;
}

.markdown-preview .toc a:hover {
    color: var(--link-hover);
}

.markdown-preview .toc a.is-active::before {
    content: "";
    position: absolute;
    left: -14px;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    border-radius: 50%;
    background: var(--accent);
}

/* --- Math (KaTeX) -------------------------------------------------------- */

.katex-display {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 18px 0;
    margin: 0.5em 0;
    text-align: center;
}

.katex {
    font-size: 1.3em !important;
    color: var(--text-strong);
}

.katex-display .katex {
    font-size: 1.4em !important;
}

.katex-display > .katex {
    display: block;
    text-align: center;
    white-space: nowrap;
}

.katex .base {
    display: inline-block;
}

.katex:not(.katex-display) {
    margin: 0 0.1em;
}

.katex-error {
    display: inline-block;
    padding: 10px;
    border: 1px solid var(--danger);
    border-radius: var(--radius-sm);
    background: color-mix(in oklab, var(--danger) 8%, transparent);
    color: var(--danger) !important;
    font-size: 1em !important;
}

/* --- Small screens ------------------------------------------------------- */

@media (max-width: 860px) {
    .markdown-preview {
        padding: 20px 18px 36px;
    }
}