/* ==========================================================================
   Persian (RTL) Markdown Styling (V2.1 - Enhanced Table & BiDi Typography)
   ========================================================================== */

.markdown-body {
  font-family: var(--font-persian);
  color: var(--md-text);
  line-height: var(--leading-relaxed);
  font-size: var(--text-md);
  word-break: break-word;
  transition: color var(--transition-fast), font-size var(--transition-fast);
}

/* Typography Modifiers */
.markdown-body.font-size-sm { font-size: 0.9rem; }
.markdown-body.font-size-md { font-size: 1.05rem; }
.markdown-body.font-size-lg { font-size: 1.18rem; }
.markdown-body.font-size-xl { font-size: 1.3rem; }

.markdown-body.line-height-normal { line-height: 1.7; }
.markdown-body.line-height-relaxed { line-height: 1.95; }
.markdown-body.line-height-loose { line-height: 2.2; }

.markdown-body.align-justify p {
  text-align: justify;
  text-justify: inter-word;
}

/* RTL Master Rules */
.markdown-body[dir="rtl"] {
  direction: rtl;
  text-align: right;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "liga" 1;
  letter-spacing: normal !important; /* CRITICAL: Never add positive letter spacing in Persian! */
  word-spacing: 0.04em;
}

/* Headings with Refined Proportional Scale */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  color: var(--md-headings);
  font-weight: 700;
  line-height: var(--leading-snug);
  margin-top: 1.9em;
  margin-bottom: 0.75em;
  letter-spacing: normal !important;
  scroll-margin-top: 2rem;
}

.markdown-body h1:first-child,
.markdown-body h2:first-child,
.markdown-body h3:first-child {
  margin-top: 0;
}

.markdown-body[dir="rtl"] h1 {
  font-size: 2.2rem;
  font-weight: 800;
  padding-right: 0.85rem;
  border-right: 5px solid var(--color-primary);
  border-left: none;
  margin-bottom: 1.25rem;
  background: linear-gradient(180deg, var(--md-headings) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.markdown-body[dir="rtl"] h2 {
  font-size: 1.65rem;
  font-weight: 800;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--md-table-border);
  margin-top: 2.2rem;
}

.markdown-body[dir="rtl"] h3 {
  font-size: 1.35rem;
  font-weight: 700;
}

.markdown-body[dir="rtl"] h4 {
  font-size: 1.15rem;
  font-weight: 600;
}

.markdown-body[dir="rtl"] h5,
.markdown-body[dir="rtl"] h6 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* Paragraphs */
.markdown-body p {
  margin-top: 0;
  margin-bottom: 1.35em;
}

/* Emphasis & Bold */
.markdown-body strong {
  font-weight: 800;
  color: var(--md-headings);
}

.markdown-body em {
  font-style: italic;
  font-weight: 500;
}

.markdown-body del {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

/* Hyperlinks */
.markdown-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1.5px;
  transition: all var(--transition-fast);
}

.markdown-body a:hover {
  color: var(--color-primary-hover);
  text-decoration-color: var(--color-primary-hover);
}

/* Blockquotes with Literary Nuance */
.markdown-body[dir="rtl"] blockquote {
  margin: 1.6em 0;
  padding: 0.9em 1.35em 0.9em 1rem;
  background-color: var(--md-quote-bg);
  border-right: 4px solid var(--md-quote-border);
  border-left: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.markdown-body[dir="rtl"] blockquote p:last-child {
  margin-bottom: 0;
}

/* Lists */
.markdown-body[dir="rtl"] ul,
.markdown-body[dir="rtl"] ol {
  padding-right: 1.85rem;
  padding-left: 0;
  margin-top: 0;
  margin-bottom: 1.35rem;
}

.markdown-body[dir="rtl"] li {
  margin-bottom: 0.45rem;
}

.markdown-body[dir="rtl"] li > p {
  margin-bottom: 0.45rem;
}

.markdown-body[dir="rtl"] ul ul,
.markdown-body[dir="rtl"] ul ol,
.markdown-body[dir="rtl"] ol ul,
.markdown-body[dir="rtl"] ol ol {
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
  padding-right: 1.5rem;
}

/* Interactive Task Lists */
.markdown-body[dir="rtl"] ul.contains-task-list {
  list-style-type: none;
  padding-right: 0.5rem;
}

.markdown-body[dir="rtl"] li.task-list-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  list-style: none;
}

.markdown-body[dir="rtl"] li.task-list-item input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-border-focus);
  border-radius: var(--radius-xs);
  background-color: var(--color-bg-base);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.markdown-body[dir="rtl"] li.task-list-item input[type="checkbox"]:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.markdown-body[dir="rtl"] li.task-list-item input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* ==========================================================================
   Bi-Directional Safety for Code Elements
   ========================================================================== */

/* Inline Code - Isolated LTR block */
.markdown-body[dir="rtl"] code:not(pre code) {
  direction: ltr;
  unicode-bidi: isolate;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.15em 0.45em;
  margin: 0 0.25em;
  background-color: var(--md-inline-code-bg);
  color: var(--md-inline-code-color);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  vertical-align: baseline;
  line-height: 1.4;
}

/* Code Block Card Wrapper with Language Tag & Copy */
.code-block-card {
  position: relative;
  margin: 1.6rem 0;
  border: 1px solid var(--md-code-border, var(--color-border));
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--md-code-bg);
  box-shadow: var(--shadow-sm);
  direction: ltr !important;
  text-align: left !important;
}

.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.45rem 0.95rem;
  background-color: var(--md-code-header-bg, var(--color-bg-elevated));
  border-bottom: 1px solid var(--md-code-border, var(--color-border));
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: 700;
  color: var(--color-text-secondary);
  direction: ltr;
  letter-spacing: 0.04em;
}

.code-copy-btn {
  background: var(--color-bg-surface);
  border: 1px solid var(--md-code-border, var(--color-border));
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.22rem 0.6rem;
  font-size: var(--text-2xs);
  font-family: var(--font-persian);
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

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

.code-block-card pre {
  margin: 0 !important;
  border: none !important;
  border-radius: 0 !important;
  direction: ltr !important;
  text-align: left !important;
  unicode-bidi: isolate;
  padding: 1.25rem 1.4rem;
  background: transparent;
  overflow-x: auto;
}

.code-block-card pre code {
  font-family: 'JetBrains Mono', 'Fira Code', var(--font-persian), 'Vazirmatn', -apple-system, sans-serif !important;
  font-size: 0.92rem;
  line-height: 1.7;
  background: transparent !important;
  padding: 0 !important;
  border: none !important;
  direction: ltr !important;
  text-align: left !important;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1 !important;
  letter-spacing: normal !important;
  word-spacing: normal !important;
  text-rendering: optimizeLegibility !important;
  color: var(--hljs-text, var(--color-text-primary));
}

/* --------------------------------------------------------------------------
   Guaranteed High-Contrast Syntax Highlighting Tokens (Dark & Light)
   Ensures crystal-clear contrast and crisp legibility in both modes
   -------------------------------------------------------------------------- */
.hljs {
  color: var(--hljs-text) !important;
  background: transparent !important;
}

.hljs-comment,
.hljs-code,
.hljs-formula {
  color: var(--hljs-comment) !important;
  font-style: normal !important;
}

.hljs-keyword,
.hljs-doctag,
.hljs-template-tag,
.hljs-template-variable,
.hljs-type,
.hljs-variable.language_ {
  color: var(--hljs-keyword) !important;
  font-weight: 600;
}

.hljs-title,
.hljs-title.class_,
.hljs-title.class_.inherited__,
.hljs-title.function_ {
  color: var(--hljs-title) !important;
  font-weight: 600;
}

.hljs-attr,
.hljs-attribute,
.hljs-selector-attr,
.hljs-selector-class,
.hljs-selector-id {
  color: var(--hljs-attr) !important;
  font-weight: 600;
}

.hljs-number,
.hljs-operator,
.hljs-variable {
  color: var(--hljs-number) !important;
}

.hljs-literal {
  color: var(--hljs-literal, var(--hljs-keyword)) !important;
  font-weight: 600;
}

.hljs-string,
.hljs-regexp,
.hljs-meta .hljs-string {
  color: var(--hljs-string) !important;
}

.hljs-built_in,
.hljs-symbol {
  color: var(--hljs-built-in) !important;
  font-weight: 600;
}

.hljs-name,
.hljs-quote,
.hljs-selector-tag,
.hljs-selector-pseudo {
  color: var(--hljs-tag) !important;
}

/* Persian Text Inside Code Comments (RTL Isolated & Connected Typography) */
.code-comment-persian {
  font-family: var(--font-persian), 'JetBrains Mono', sans-serif !important;
  font-size: 0.94em;
  font-style: normal !important;
  direction: rtl !important;
  unicode-bidi: isolate !important;
  display: inline-block;
  line-height: 1.6;
  vertical-align: baseline;
  letter-spacing: normal !important;
  word-spacing: normal !important;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1 !important;
}

/* ==========================================================================
   KaTeX Math Equations (BiDi Safe & Centered)
   ========================================================================== */
.katex-display {
  direction: ltr !important;
  text-align: center !important;
  margin: 1.5rem 0 !important;
  padding: 0.75rem 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.katex {
  direction: ltr !important;
  font-size: 1.1em !important;
  text-rendering: auto;
}

/* ==========================================================================
   Mermaid Diagrams
   ========================================================================== */
.mermaid {
  direction: ltr !important;
  display: flex;
  justify-content: center;
  margin: 2rem 0;
  padding: 1.5rem;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

/* ==========================================================================
   High-Precision Table Styling (Fixed for 9+ Columns & Persian BiDi)
   ========================================================================== */
.table-container {
  width: 100%;
  overflow-x: auto;
  margin: 1.8rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--md-table-border);
  background-color: var(--color-bg-surface);
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}

.markdown-body table.markdown-table,
.markdown-body[dir="rtl"] table {
  width: 100%;
  min-width: 680px; /* Guarantees wide tables don't squash columns into 1-letter syllables */
  border-collapse: collapse;
  border-spacing: 0;
  margin: 0 !important;
  font-size: 0.88rem;
  line-height: 1.6;
}

/* Table Header */
.markdown-body th,
.markdown-body[dir="rtl"] th {
  background-color: var(--color-bg-elevated);
  color: var(--md-headings);
  font-weight: 700;
  font-size: 0.84rem;
  padding: 0.75rem 0.85rem;
  border-bottom: 2px solid var(--color-primary);
  border-left: 1px solid var(--md-table-border);
  white-space: nowrap;
}

.markdown-body th:last-child,
.markdown-body[dir="rtl"] th:last-child {
  border-left: none;
}

/* Table Body Cells */
.markdown-body td,
.markdown-body[dir="rtl"] td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--md-table-border);
  border-left: 1px solid var(--md-table-border);
  color: var(--md-text);
  vertical-align: middle;
}

.markdown-body td:last-child,
.markdown-body[dir="rtl"] td:last-child {
  border-left: none;
}

.markdown-body tr:last-child td {
  border-bottom: none;
}

.markdown-body tr:nth-child(even) td {
  background-color: var(--md-table-stripe);
}

.markdown-body tr:hover td {
  background-color: var(--md-table-hover);
}

/* Respect Explicit Markdown Column Alignments */
.markdown-body th.align-center,
.markdown-body td.align-center,
.markdown-body th[align="center"],
.markdown-body td[align="center"] {
  text-align: center !important;
}

.markdown-body th.align-left,
.markdown-body td.align-left,
.markdown-body th[align="left"],
.markdown-body td[align="left"] {
  text-align: left !important;
  direction: ltr !important;
}

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

/* Short Numeric & Financial Cells - Tabular digits and Never wrap in half! */
.markdown-body td.cell-numeric,
.markdown-body th.cell-numeric {
  white-space: nowrap !important;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* Horizontal Rule */
.markdown-body hr {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--md-hr-color), transparent);
  border: none;
  margin: 2.5rem 0;
}

/* Images & Figures */
.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: 1.25rem 0;
  box-shadow: var(--shadow-md);
}

/* Keyboard Badges */
.markdown-body kbd {
  display: inline-block;
  padding: 0.2em 0.55em;
  font-family: var(--font-mono);
  font-size: 0.82em;
  font-weight: 600;
  color: var(--color-text-primary);
  background-color: var(--md-kbd-bg);
  border: 1px solid var(--md-kbd-border);
  border-bottom: 2px solid var(--md-kbd-border);
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-xs);
  margin: 0 0.25em;
}

/* GitHub Callout Alerts Localized to Persian */
.markdown-callout {
  margin: 1.6rem 0;
  padding: 1rem 1.35rem;
  border-radius: var(--radius-md);
  border-right: 4px solid transparent;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: var(--shadow-xs);
}

.markdown-callout .callout-header {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 0.95rem;
}

.markdown-callout.note {
  background-color: var(--color-info-bg);
  border-right-color: var(--color-info);
  color: var(--color-text-primary);
}
.markdown-callout.note .callout-header { color: var(--color-info); }

.markdown-callout.tip {
  background-color: var(--color-success-bg);
  border-right-color: var(--color-success);
  color: var(--color-text-primary);
}
.markdown-callout.tip .callout-header { color: var(--color-success); }

.markdown-callout.important {
  background-color: var(--color-primary-light);
  border-right-color: var(--color-primary);
  color: var(--color-text-primary);
}
.markdown-callout.important .callout-header { color: var(--color-primary); }

.markdown-callout.warning {
  background-color: var(--color-warning-bg);
  border-right-color: var(--color-warning);
  color: var(--color-text-primary);
}
.markdown-callout.warning .callout-header { color: var(--color-warning); }

.markdown-callout.caution {
  background-color: var(--color-danger-bg);
  border-right-color: var(--color-danger);
  color: var(--color-text-primary);
}
.markdown-callout.caution .callout-header { color: var(--color-danger); }

/* Manual Page Break Marker */
.page-break {
  display: block;
  position: relative;
  margin: 2.2rem 0;
  border-top: 2px dashed var(--color-border);
  text-align: center;
}

.page-break::after {
  content: '✂ شکست صفحه (Page Break برای چاپ برداری)';
  position: relative;
  top: -12px;
  background-color: var(--color-bg-surface);
  padding: 0 1rem;
  font-size: var(--text-2xs);
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}