/* Explanation Page Styles - Also used by About page */

.explanation-page {
  min-height: 100vh;
  background-color: #f5f1e8;
  /* Match docs-page background */
  padding: 0;
  position: relative;
}

/* Main content wrapper */
.explanation-content {
  max-width: 52rem;
  margin: 0 auto;
  padding-top: 2rem;
}

/* Understanding Section Tab Navigation */
.understanding-tabs {
  display: flex;
  gap: 0.5rem;
  margin: 0 auto 2rem auto;
  max-width: 52rem;
  padding: 0 3rem;
}

.understanding-tab {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-beige-light);
  border: 2px solid var(--color-gray-medium);
  color: var(--color-gray-darker);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  flex: 1;
  text-align: center;
}

.understanding-tab:hover {
  background-color: var(--color-beige-base);
  border-color: var(--color-red-accent);
}

.understanding-tab--active {
  background-color: var(--color-red-accent);
  color: var(--color-beige-light);
  border-color: var(--color-red-accent);
  cursor: default;
}

/* Concept sections within Understanding pages */
.concept-section {
  max-width: 52rem;
  margin: 0 auto 2rem auto;
  background-color: #F5F1E8;
  padding: 2rem 3rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.concept-section h2 {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.75rem 0;
  color: var(--color-gray-darker);
}

.concept-section p {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: #2A2A2A;
  margin-bottom: 1rem;
}

.concept-section h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: bold;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-gray-darker);
}

.concept-section ul {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: #2A2A2A;
  margin-bottom: 1rem;
  padding-left: 2rem;
  list-style-type: square;
}

.concept-section li {
  margin-bottom: 0.5rem;
}

.concept-section pre {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background-color: var(--color-beige-dark);
  padding: 1rem;
  margin-bottom: 1rem;
  overflow-x: auto;
  /* Scroll horizontally instead of overflowing */
  border-left: 3px solid var(--color-teal);
  line-height: 1.5;
}

.concept-section pre code {
  background-color: transparent;
  padding: 0;
  white-space: pre;
  /* Preserve formatting */
}

.concept-section code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background-color: var(--color-beige-dark);
  padding: 0.125rem 0.375rem;
  border-radius: 2px;
  color: var(--color-teal);
}

.concept-section em {
  font-style: italic;
}

.explanation-title {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 auto 2rem auto;
  max-width: 52rem;
  padding: 0 3rem 0.75rem 3rem;
  border-bottom: 3px solid var(--color-red-accent);
  color: var(--color-gray-darker);
}

/* TOC Floating Panel - Left side */
/* Positioned relative to center column (52rem wide) */
.toc-panel {
  position: fixed;
  top: 2rem;
  /* Position to left of center column: 50% - half column width - panel width - gap */
  left: calc(50% - 26rem - 360px - 2rem);
  width: 360px;
  max-height: calc(100vh - 4rem);
  display: flex;
  z-index: 1000;
  font-family: var(--font-mono);
}

.toc-panel__bookmark-pin {
  width: 80px;
  height: auto;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.toc-panel__main {
  flex: 1;
  background-color: var(--color-beige-light);
  border: 2px solid var(--color-gray-medium);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
}

.floating-panel__header {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  background-color: var(--color-red-accent);
  color: var(--color-beige-light);
  border-bottom: 2px solid var(--color-gray-medium);
  cursor: move;
}

.floating-panel__title {
  flex: 1;
  margin: 0;
  font-size: 0.875rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
}

.floating-panel__toggle {
  background: none;
  border: 1px solid var(--color-beige-light);
  color: var(--color-beige-light);
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  width: 24px;
  height: 24px;
  padding: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-panel__toggle:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.floating-panel__content {
  flex: 1;
  overflow-y: auto;
  padding: 0;
}

.floating-panel--collapsed .floating-panel__content {
  display: none;
}

.toc-panel__content {
  padding: 0.5rem 0;
}

.toc-nav {
  display: flex;
  flex-direction: column;
}

.toc-nav__item {
  display: block;
  padding: 0.625rem 1rem;
  color: var(--color-gray-darker);
  text-decoration: none;
  font-size: 0.9375rem;
  line-height: 1.5;
  border-left: 3px solid transparent;
  transition: all 0.15s ease;
}

.toc-nav__item:hover {
  background-color: var(--color-beige-base);
  border-left-color: var(--color-red-accent);
  color: var(--color-gray-darker);
}

.toc-nav__item--level-2 {
  padding-left: 1.75rem;
  font-size: 0.875rem;
}

.toc-nav__item--level-3 {
  padding-left: 2.5rem;
  font-size: 0.8125rem;
  color: var(--color-gray-medium);
}

.toc-nav__item--route-link {
  color: var(--color-teal);
  font-style: italic;
}

.toc-nav__item--route-link:hover {
  border-left-color: var(--color-teal);
  color: var(--color-teal);
}

/* Control Panel - Alternative to TOC for interactive pages */
/* Unlike TOC which has bookmark on the side, control panel is just the main box */
.control-panel.toc-panel {
  /* Control panel doesn't use the bookmark/main layout */
  display: block;
}

.control-panel__main {
  width: 100%;
}

.control-panel__icon {
  width: 50%;
  /* Half the panel width */
  max-width: 180px;
  height: auto;
  margin: 1rem 0 1rem 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.control-panel__content {
  padding: 1rem;
}

.control-panel__section {
  margin-bottom: 1.5rem;
}

.control-panel__section:last-child {
  margin-bottom: 0;
}

.control-panel__section-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-medium);
  margin: 0 0 0.75rem 0;
}

.control-panel__options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-panel__option {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  background-color: transparent;
  border: 1px solid var(--color-gray-medium);
  border-left: 3px solid transparent;
  color: var(--color-gray-darker);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: left;
}

.control-panel__option:hover {
  background-color: var(--color-beige-base);
  border-left-color: var(--color-red-accent);
}

.control-panel__option--active {
  background-color: var(--color-beige-base);
  border-left-color: var(--color-red-accent);
  font-weight: bold;
  color: var(--color-gray-darker);
}

.control-panel__current {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-gray-light);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-gray-darker);
}

/* Navigation Panel (RHS) */
/* Positioned relative to center column (52rem wide) */
.explanation-page__nav-panel {
  position: fixed;
  top: 2rem;
  /* Position to right of center column: 50% - half column width - panel width - gap */
  right: calc(50% - 26rem - 240px - 2rem);
  width: 240px;
  background-color: var(--color-beige-light);
  border: 2px solid var(--color-gray-medium);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  padding: 1.5rem;
  z-index: 1000;
}

.explanation-page__nav-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 1rem 0;
  color: var(--color-gray-darker);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-red-accent);
}

.explanation-page__nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.explanation-page__nav-link {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-gray-darker);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-left: 3px solid transparent;
  transition: all 0.15s ease;
}

.explanation-page__nav-link:hover {
  background-color: var(--color-beige-base);
  border-left-color: var(--color-red-accent);
  color: var(--color-gray-darker);
}

.explanation-page__nav-link--active {
  background-color: var(--color-beige-base);
  border-left-color: var(--color-red-accent);
  font-weight: bold;
  color: var(--color-gray-darker);
  cursor: default;
}

.explanation-page__nav-link--external {
  color: var(--color-teal);
}

.explanation-page__nav-link--external:hover {
  color: var(--color-teal);
  border-left-color: var(--color-teal);
}

.explanation-page__nav-divider {
  border: none;
  border-top: 1px solid var(--color-gray-light);
  margin: 0.75rem 0;
}

.explanation-page__nav-section-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-medium);
  margin: 0.5rem 0 0.25rem 0.75rem;
}

.explanation-page__nav-link--howto {
  font-size: 0.75rem;
  color: var(--color-teal);
  padding-left: 1.5rem;
  font-style: italic;
}

.explanation-page__nav-link--howto:hover {
  color: var(--color-teal);
  border-left-color: var(--color-teal);
}

.tutorial-section {
  max-width: 52rem;
  margin: 0 auto 3rem auto;
  background-color: #F5F1E8;
  padding: 2rem 3rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  position: relative;
  /* For positioning margin notes */
}

.tutorial-intro {
  margin-bottom: 4rem;
}

.tutorial-title {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 1.5rem 0;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--color-red-accent);
  color: var(--color-gray-darker);
}

.tutorial-section-title {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 1rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-red-accent);
  color: var(--color-gray-darker);
}

.tutorial-section p {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: #2A2A2A;
  margin-bottom: 1rem;
}

.tutorial-section ul {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: #2A2A2A;
  margin-bottom: 1rem;
  padding-left: 2rem;
  list-style-type: square;
}

.tutorial-section li {
  margin-bottom: 0.5rem;
}

.tutorial-section ol {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: #2A2A2A;
  margin-bottom: 1rem;
  padding-left: 2rem;
  list-style-type: decimal;
}

.tutorial-section h2 {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--color-gray-darker);
}

.tutorial-section h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: bold;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--color-gray-darker);
}

.tutorial-section h4 {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--color-teal);
}

.tutorial-section a {
  color: var(--color-red-accent);
  text-decoration: underline;
}

.tutorial-section a:hover {
  color: var(--color-coral);
}

.tutorial-section strong {
  font-weight: bold;
  color: var(--color-gray-darker);
}

.tutorial-section em {
  font-style: italic;
}

.tutorial-section code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background-color: #f5f0e6;
  padding: 0.125rem 0.375rem;
  border-radius: 2px;
  color: #333;
}

.tutorial-section pre {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background-color: #f5f0e6;
  color: #2a2a2a;
  padding: 1rem;
  margin-bottom: 1rem;
  overflow-x: auto;
  border-left: 3px solid var(--color-teal);
  line-height: 1.6;
}

.tutorial-section pre code {
  background-color: transparent;
  color: inherit;
  padding: 0;
}

/* Tables */
.tutorial-table {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}

.tutorial-table th,
.tutorial-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-gray-light);
}

.tutorial-table th {
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: var(--color-beige-dark);
  border-bottom: 2px solid var(--color-gray-medium);
}

.tutorial-table tr:hover {
  background-color: var(--color-beige-base);
}

/* Visualization Container */
.tutorial-viz-container {
  margin: 2rem 0;
  padding: 2rem;
  background-color: white;
  border: 2px solid var(--color-gray-medium);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Embedded visualization divs */
.tutorial-viz-container .three-circles-viz,
.tutorial-viz-container .gup-viz,
.tutorial-viz-container .parabola-viz,
.tutorial-viz-container .barchart-viz,
.tutorial-viz-container .linechart-viz,
.tutorial-viz-container .quartet-viz {
  width: 100%;
  /* Let SVG determine height naturally based on viewBox aspect ratio */
}

/* Make SVG responsive - scales to fit container while maintaining aspect ratio */
.tutorial-viz-container svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  margin: 0 auto;
}

/* Specific sizing for small examples to keep them readable */
.tutorial-viz-container .three-circles-viz svg,
.tutorial-viz-container .parabola-viz svg {
  max-width: 600px;
  /* Keep small examples from getting too large */
  min-height: 100px;
  /* Ensure minimum readable size */
}

/* GUP needs more vertical space for animation */
.tutorial-viz-container .gup-viz svg {
  max-width: 600px;
  min-height: 200px;
}

/* Chart examples can be larger */
.tutorial-viz-container .barchart-viz svg,
.tutorial-viz-container .linechart-viz svg {
  max-width: 800px;
}

/* Quartet needs full width for side-by-side charts */
.tutorial-viz-container .quartet-viz svg {
  max-width: 100%;
  min-height: 300px;
}

/* Hierarchies visualization - full width for tree layouts */
.tutorial-viz-container .hierarchies-viz {
  width: 100%;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tutorial-viz-container .hierarchies-viz svg {
  max-width: 100%;
  min-height: 400px;
}

/* Les Misérables force-directed graph */
.lesmis-container {
  width: 100%;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-beige-light);
  border: 2px solid var(--color-gray-light);
  border-radius: 4px;
}

.lesmis-container svg {
  max-width: 100%;
  height: 600px;
  cursor: grab;
}

.lesmis-container svg:active {
  cursor: grabbing;
}

/* Les Mis specific styling for nodes and links */
.lesmis circle {
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.lesmis circle:hover {
  opacity: 0.8;
}

.lesmis line {
  pointer-events: none;
}

/* Layout placeholder styling */
.layout-placeholder {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-gray-medium);
  text-align: center;
  padding: 3rem;
}

/* Code blocks in tutorial - use existing Prism editorial theme */
.tutorial-code-block {
  margin: 1.5rem 0;
}

.tutorial-code-block pre {
  margin: 0;
  overflow-x: auto;
  /* Allow horizontal scroll for long lines */
}

.tutorial-code-block code {
  /* Font size defined in prism-editorial.css (0.6875rem / 11px) */
  line-height: 1.7;
  white-space: pre;
  /* Preserve formatting, don't wrap */
}

/* Ensure Prism styles apply correctly */
.tutorial-code-block pre[class*="language-"] {
  /* Font size defined in prism-editorial.css */
  white-space: pre;
  overflow-x: auto;
}

.tutorial-code-block code[class*="language-"] {
  /* Font size defined in prism-editorial.css */
  white-space: pre;
}

/* Margin Notes */
.tutorial-margin-note {
  position: absolute;
  right: -280px;
  /* Position outside the main content column */
  width: 240px;
  background-color: var(--color-beige-light);
  border: 2px solid var(--color-gray-medium);
  padding: 1rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  margin-top: -1rem;
  /* Align with adjacent content */
}

.tutorial-margin-note__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-medium);
  margin: 0 0 0.75rem 0;
}

.tutorial-margin-note__link {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-red-accent);
  text-decoration: none;
  padding: 0.5rem 0;
  border-left: 3px solid transparent;
  padding-left: 0.75rem;
  transition: all 0.15s ease;
}

.tutorial-margin-note__link:hover {
  border-left-color: var(--color-red-accent);
  background-color: var(--color-beige-base);
}

/* Responsive */
/* On narrower screens, fall back to edge-based positioning */
@media (max-width: 1600px) {
  .toc-panel {
    /* Switch to edge positioning when viewport is too narrow */
    left: 2rem;
  }

  .explanation-page__nav-panel {
    /* Switch to edge positioning when viewport is too narrow */
    right: 2rem;
  }
}

@media (max-width: 1400px) {
  .toc-panel {
    width: 320px;
    left: 1.5rem;
  }

  .toc-panel__bookmark-pin {
    width: 60px;
  }

  .explanation-page__nav-panel {
    width: 200px;
    right: 1.5rem;
  }

  .tutorial-section {
    margin-right: 1rem;
  }

  .tutorial-margin-note {
    right: -240px;
    width: 200px;
  }
}

@media (max-width: 1200px) {
  .toc-panel {
    width: 280px;
    left: 1rem;
  }

  .toc-panel__bookmark-pin {
    width: 50px;
  }

  /* Move margin notes inline on smaller screens */
  .tutorial-margin-note {
    position: static;
    width: auto;
    margin: 1.5rem 0;
  }
}

@media (max-width: 768px) {
  .tutorial-section {
    padding: 1.5rem;
  }

  .tutorial-title {
    font-size: 1.5rem;
  }

  .tutorial-section-title {
    font-size: 1.25rem;
  }

  .tutorial-section p,
  .tutorial-section ul {
    font-size: 0.8125rem;
  }

  .tutorial-viz-container {
    padding: 1rem;
  }

  /* Reduce code font size slightly on mobile */
  .tutorial-code-block code,
  .tutorial-code-block pre[class*="language-"],
  .tutorial-code-block code[class*="language-"] {
    font-size: 0.625rem;
    /* 10px on mobile */
  }

  /* Adjust min heights for mobile */
  .tutorial-viz-container .three-circles-viz svg,
  .tutorial-viz-container .parabola-viz svg {
    min-height: 80px;
  }

  .tutorial-viz-container .gup-viz svg {
    min-height: 150px;
  }

  .tutorial-viz-container .quartet-viz svg {
    min-height: 200px;
  }

  /* Hide TOC and Nav panel on mobile */
  .toc-panel,
  .explanation-page__nav-panel {
    display: none;
  }
}