/* Dark Theme CSS for ML/DL Guide */
/* Optimized for dark mode with proper contrast and visibility */

/* ============================================================ */
/* Dark Theme Color Palette */
/* ============================================================ */

:root[data-bs-theme="dark"] {
  /* Background colors */
  --bg-primary: #1e1e2e;
  --bg-secondary: #282a36;
  --bg-tertiary: #44475a;

  /* Text colors */
  --text-primary: #f8f9fa;
  --text-secondary: #cdd6f4;
  --text-muted: #a8adc6;

  /* Accent colors */
  --accent-blue: #89b4fa;
  --accent-purple: #cba6f7;
  --accent-red: #f38ba8;
  --accent-green: #a6e3a1;
  --accent-yellow: #f9e2af;

  /* Borders */
  --border-color: #44475a;
  --border-light: #6c7086;
}

/* ============================================================ */
/* Base Dark Theme Overrides */
/* ============================================================ */

body[data-bs-theme="dark"] {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

/* ============================================================ */
/* Math Equations (MathJax) - CRITICAL FIX */
/* ============================================================ */

/* Container for math equations */
body[data-bs-theme="dark"] .arithmatex {
  display: inline-block;
  background-color: rgba(0, 0, 0, 0.3);
  color: var(--text-primary);
  padding: 0.25em 0.5em;
  margin: 0.2em 0;
  border-radius: 3px;
  overflow-x: auto;
}

/* Block-level math (display math with $$) */
body[data-bs-theme="dark"] div.arithmatex {
  display: block;
  background-color: rgba(0, 0, 0, 0.4);
  padding: 1.5em 1em;
  margin: 1.5em 0;
  border-radius: 4px;
  border-left: 3px solid var(--accent-blue);
}

/* MathJax container - JavaScript will apply filters */
body[data-bs-theme="dark"] mjx-container {
  display: inline-block;
  background: transparent !important;
  margin: 0;
  padding: 0;
}

/* MathJax SVG - ensure transparent background */
body[data-bs-theme="dark"] mjx-container svg {
  background: transparent !important;
  max-width: 100%;
}

/* Inline math (within text) */
body[data-bs-theme="dark"] code.arithmatex {
  background-color: transparent;
  border: none;
  color: inherit;
  padding: 0;
  border-radius: 0;
}

/* Ensure math expressions don't get styled as code */
body[data-bs-theme="dark"] .arithmatex code {
  background-color: transparent;
  color: inherit;
  border: none;
  padding: 0;
}

/* ============================================================ */
/* Mermaid Diagrams - CRITICAL FIX */
/* ============================================================ */

body[data-bs-theme="dark"] .mermaid {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 2em;
  margin: 2em 0;
  overflow-x: auto;
}

/* Mermaid SVG styling */
body[data-bs-theme="dark"] .mermaid svg {
  background: transparent !important;
}

/* Mermaid text styling */
body[data-bs-theme="dark"] .mermaid text {
  fill: var(--text-primary) !important;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* Mermaid edges and paths */
body[data-bs-theme="dark"] .mermaid path,
body[data-bs-theme="dark"] .mermaid line,
body[data-bs-theme="dark"] .mermaid polygon {
  stroke: var(--accent-blue) !important;
  fill: transparent !important;
}

/* Mermaid nodes */
body[data-bs-theme="dark"] .mermaid rect,
body[data-bs-theme="dark"] .mermaid circle,
body[data-bs-theme="dark"] .mermaid ellipse {
  stroke: var(--accent-blue) !important;
  fill: var(--bg-tertiary) !important;
  stroke-width: 2px !important;
}

/* Mermaid arrows */
body[data-bs-theme="dark"] .mermaid marker {
  fill: var(--accent-blue) !important;
}

/* Mermaid labels and titles */
body[data-bs-theme="dark"] .mermaid .labelBox {
  background-color: var(--bg-tertiary) !important;
  stroke: var(--accent-blue) !important;
}

/* Mermaid cluster styling */
body[data-bs-theme="dark"] .mermaid .cluster {
  stroke: var(--accent-purple) !important;
  fill: var(--bg-tertiary) !important;
}

/* Mermaid cluster title */
body[data-bs-theme="dark"] .mermaid .cluster text {
  fill: var(--accent-purple) !important;
}

/* ============================================================ */
/* Code Blocks - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] code {
  background-color: var(--bg-secondary);
  color: var(--accent-green);
  border: 1px solid var(--border-color);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
}

body[data-bs-theme="dark"] pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 1em;
  border-radius: 4px;
  overflow-x: auto;
}

body[data-bs-theme="dark"] pre code {
  background-color: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0;
}

/* ============================================================ */
/* Tables - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5em 0;
  border: 1px solid var(--border-color);
}

body[data-bs-theme="dark"] table th {
  background-color: var(--bg-tertiary);
  color: var(--accent-blue);
  font-weight: 600;
  padding: 0.75em;
  border: 1px solid var(--border-color);
  text-align: left;
}

body[data-bs-theme="dark"] table td {
  padding: 0.75em;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

body[data-bs-theme="dark"] table tr:nth-child(even) {
  background-color: rgba(68, 71, 90, 0.3);
}

body[data-bs-theme="dark"] table tr:hover {
  background-color: rgba(68, 71, 90, 0.5);
}

/* ============================================================ */
/* Admonitions - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] .admonition {
  border-left: 4px solid var(--accent-blue);
  background-color: rgba(139, 180, 250, 0.1);
  color: var(--text-primary);
  margin: 1.5em 0;
  padding: 1em;
  border-radius: 4px;
}

body[data-bs-theme="dark"] .admonition.note {
  border-left-color: var(--accent-blue);
  background-color: rgba(139, 180, 250, 0.08);
}

body[data-bs-theme="dark"] .admonition.warning {
  border-left-color: var(--accent-yellow);
  background-color: rgba(249, 226, 175, 0.08);
}

body[data-bs-theme="dark"] .admonition.warning .admonition-title {
  color: var(--accent-yellow);
}

body[data-bs-theme="dark"] .admonition.tip {
  border-left-color: var(--accent-green);
  background-color: rgba(166, 227, 161, 0.08);
}

body[data-bs-theme="dark"] .admonition.tip .admonition-title {
  color: var(--accent-green);
}

body[data-bs-theme="dark"] .admonition.warning code,
body[data-bs-theme="dark"] .admonition.tip code,
body[data-bs-theme="dark"] .admonition.note code {
  background-color: var(--bg-secondary);
  color: var(--accent-blue);
  border-color: var(--border-light);
}

/* ============================================================ */
/* Abbreviations & Tooltips - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] abbr {
  border-bottom: 2px dotted var(--accent-blue);
  cursor: help;
  text-decoration: none;
  font-weight: 500;
  color: var(--accent-blue);
}

body[data-bs-theme="dark"] abbr:hover {
  border-bottom-color: var(--accent-red);
  color: var(--accent-red);
}

body[data-bs-theme="dark"] #abbr-tooltip {
  background-color: var(--bg-tertiary) !important;
  border: 1px solid var(--border-light) !important;
  color: var(--text-primary) !important;
  font-size: 0.85rem;
  padding: 8px 12px;
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
}

/* ============================================================ */
/* Links - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

body[data-bs-theme="dark"] a:hover {
  color: var(--accent-purple);
  text-decoration: underline;
}

/* ============================================================ */
/* Blockquotes - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] blockquote {
  border-left: 4px solid var(--accent-blue);
  color: var(--text-secondary);
  margin: 1em 0;
  padding-left: 1em;
  background-color: rgba(139, 180, 250, 0.05);
  padding: 1em;
  border-radius: 4px;
}

/* ============================================================ */
/* Headers - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] h1,
body[data-bs-theme="dark"] h2,
body[data-bs-theme="dark"] h3,
body[data-bs-theme="dark"] h4,
body[data-bs-theme="dark"] h5,
body[data-bs-theme="dark"] h6 {
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5em;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

body[data-bs-theme="dark"] h1 {
  color: var(--accent-blue);
  border-bottom: 2px solid var(--accent-blue);
}

body[data-bs-theme="dark"] h2 {
  color: var(--accent-purple);
  border-bottom: 2px solid var(--accent-purple);
}

body[data-bs-theme="dark"] h3 {
  color: var(--accent-green);
}

/* ============================================================ */
/* Horizontal Rules - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] hr {
  border: none;
  border-top: 2px solid var(--border-light);
  margin: 2em 0;
}

/* ============================================================ */
/* Selection - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] ::selection {
  background-color: rgba(139, 180, 250, 0.3);
  color: var(--text-primary);
}

body[data-bs-theme="dark"] ::-moz-selection {
  background-color: rgba(139, 180, 250, 0.3);
  color: var(--text-primary);
}

/* ============================================================ */
/* Details/Summary (Collapsible) - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] details {
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 1em;
  margin: 1em 0;
  background-color: var(--bg-secondary);
}

body[data-bs-theme="dark"] details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--accent-blue);
  user-select: none;
  padding: 0.5em;
  margin: -0.5em -0.5em 0.5em -0.5em;
  padding-left: 1.5em;
}

body[data-bs-theme="dark"] details summary:hover {
  color: var(--accent-purple);
}

/* ============================================================ */
/* Lists - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] ul,
body[data-bs-theme="dark"] ol {
  color: var(--text-secondary);
  margin: 1em 0;
  padding-left: 2em;
}

body[data-bs-theme="dark"] li {
  margin: 0.5em 0;
  line-height: 1.6;
}

/* ============================================================ */
/* Emphasis and Strong - Dark Theme */
/* ============================================================ */

body[data-bs-theme="dark"] strong {
  color: var(--accent-blue);
  font-weight: 600;
}

body[data-bs-theme="dark"] em {
  color: var(--accent-purple);
  font-style: italic;
}