/**
 * Effective AI 2026 — warm paper theme for reveal.js
 *
 * IBM Plex Mono · warm beige palette · wide-margin layout system
 */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&display=swap');

/*********************************************
 * GLOBAL STYLES
 *********************************************/
:root {
  --r-background-color: #f7f5f2;
  --r-main-font: 'IBM Plex Mono', monospace;
  --r-main-font-size: 28px;
  --r-main-color: #2d2a26;
  --r-block-margin: 16px;
  --r-heading-margin: 0 0 16px 0;
  --r-heading-font: 'IBM Plex Mono', monospace;
  --r-heading-color: #2d2a26;
  --r-heading-line-height: 0.95;
  --r-heading-letter-spacing: -0.02em;
  --r-heading-text-transform: none;
  --r-heading-text-shadow: none;
  --r-heading-font-weight: 600;
  --r-heading1-text-shadow: none;
  --r-heading1-size: 2.4em;
  --r-heading2-size: 1.4em;
  --r-heading3-size: 1.15em;
  --r-heading4-size: 1em;
  --r-code-font: 'IBM Plex Mono', monospace;
  --r-link-color: #9d4a30;
  --r-link-color-dark: #7a3a24;
  --r-link-color-hover: #b85a3a;
  --r-selection-background-color: rgba(157, 74, 48, 0.25);
  --r-selection-color: #2d2a26;
  --r-overlay-element-bg-color: 0, 0, 0;
  --r-overlay-element-fg-color: 240, 240, 240;

  /* palette extras */
  --r-muted: #8a857d;
  --r-subtle: #b5b0a8;
  --r-accent: #9d4a30;

  /* 8-point grid on 960×700 canvas */
  --grid-unit: 8px;
  --margin-edge: 48px;
  --content-top: 80px;
  --content-bottom: 64px;
  --content-x: 112px;
  --corner-width: 200px;
}

.reveal-viewport {
  background: #f7f5f2;
  background-color: var(--r-background-color);
}

.reveal {
  font-family: var(--r-main-font);
  font-size: var(--r-main-font-size);
  font-weight: normal;
  color: var(--r-main-color);
}

.reveal ::selection {
  color: var(--r-selection-color);
  background: var(--r-selection-background-color);
  text-shadow: none;
}

.reveal ::-moz-selection {
  color: var(--r-selection-color);
  background: var(--r-selection-background-color);
  text-shadow: none;
}

.reveal .slides section,
.reveal .slides section > section {
  line-height: 1.4;
  font-weight: inherit;
}

/*********************************************
 * HEADERS
 *********************************************/
.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  margin: var(--r-heading-margin);
  color: var(--r-heading-color);
  font-family: var(--r-heading-font);
  font-weight: var(--r-heading-font-weight);
  line-height: var(--r-heading-line-height);
  letter-spacing: var(--r-heading-letter-spacing);
  text-transform: var(--r-heading-text-transform);
  text-shadow: var(--r-heading-text-shadow);
  word-wrap: break-word;
}

.reveal h1 { font-size: var(--r-heading1-size); }
.reveal h2 { font-size: var(--r-heading2-size); }
.reveal h3 { font-size: var(--r-heading3-size); }
.reveal h4 { font-size: var(--r-heading4-size); }
.reveal h1 { text-shadow: var(--r-heading1-text-shadow); }

/*********************************************
 * OTHER
 *********************************************/
.reveal p {
  margin: var(--r-block-margin) 0;
  line-height: 1.4;
}

.reveal h1:last-child,
.reveal h2:last-child,
.reveal h3:last-child,
.reveal h4:last-child,
.reveal h5:last-child,
.reveal h6:last-child {
  margin-bottom: 0;
}

.reveal img,
.reveal video,
.reveal iframe {
  max-width: 95%;
  max-height: 95%;
}

.reveal strong,
.reveal b {
  font-weight: 600;
}

.reveal em {
  font-style: italic;
}

.reveal ol,
.reveal dl,
.reveal ul {
  display: inline-block;
  text-align: left;
  margin: 0 0 0 1em;
}

.reveal ol { list-style-type: decimal; }
.reveal ul { list-style-type: disc; }
.reveal ul ul { list-style-type: square; }
.reveal ul ul ul { list-style-type: circle; }

.reveal ul ul,
.reveal ul ol,
.reveal ol ol,
.reveal ol ul {
  display: block;
  margin-left: 40px;
}

.reveal dt { font-weight: 600; }
.reveal dd { margin-left: 40px; }

.reveal blockquote {
  display: block;
  position: relative;
  width: 70%;
  margin: var(--r-block-margin) auto;
  padding: 5px;
  font-style: italic;
  background: rgba(0, 0, 0, 0.03);
  border-left: 3px solid var(--r-accent);
}

.reveal blockquote p:first-child,
.reveal blockquote p:last-child {
  display: inline-block;
}

.reveal q { font-style: italic; }

.reveal pre {
  display: block;
  position: relative;
  width: 90%;
  margin: var(--r-block-margin) auto;
  text-align: left;
  font-size: 0.55em;
  font-family: var(--r-code-font);
  line-height: 1.4em;
  word-wrap: break-word;
  box-shadow: none;
}

.reveal code {
  font-family: var(--r-code-font);
  text-transform: none;
  tab-size: 2;
}

.reveal pre code {
  display: block;
  padding: 8px 12px;
  overflow: auto;
  max-height: 400px;
  word-wrap: normal;
  background: rgba(0, 0, 0, 0.03);
  border-radius: 3px;
}

.reveal .code-wrapper { white-space: normal; }
.reveal .code-wrapper code { white-space: pre; }

.reveal table {
  margin: auto;
  border-collapse: collapse;
  border-spacing: 0;
}

.reveal table th { font-weight: 600; }

.reveal table th,
.reveal table td {
  text-align: left;
  padding: 0.2em 0.5em;
  border-bottom: 1px solid var(--r-subtle);
}

.reveal table th[align=center],
.reveal table td[align=center] { text-align: center; }

.reveal table th[align=right],
.reveal table td[align=right] { text-align: right; }

.reveal table tbody tr:last-child th,
.reveal table tbody tr:last-child td { border-bottom: none; }

.reveal sup { vertical-align: super; font-size: smaller; }
.reveal sub { vertical-align: sub; font-size: smaller; }

.reveal small {
  display: inline-block;
  font-size: 0.6em;
  line-height: 1.2em;
  vertical-align: top;
}

.reveal small * { vertical-align: top; }
.reveal img { margin: var(--r-block-margin) 0; }

/*********************************************
 * LINKS
 *********************************************/
.reveal a {
  color: var(--r-link-color);
  text-decoration: none;
  transition: color 0.15s ease;
}

.reveal a:hover {
  color: var(--r-link-color-hover);
  text-shadow: none;
  border: none;
}

.reveal .roll span:after {
  color: #fff;
  background: var(--r-link-color-dark);
}

/*********************************************
 * Frame helper
 *********************************************/
.reveal .r-frame {
  border: 4px solid var(--r-main-color);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.reveal a .r-frame { transition: all 0.15s linear; }

.reveal a:hover .r-frame {
  border-color: var(--r-link-color);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
}

/*********************************************
 * NAVIGATION CONTROLS
 *********************************************/
.reveal .controls { color: var(--r-accent); }

/*********************************************
 * PROGRESS BAR
 *********************************************/
.reveal .progress {
  background: rgba(0, 0, 0, 0.1);
  color: var(--r-accent);
}

/*********************************************
 * PRINT BACKGROUND
 *********************************************/
@media print {
  .backgrounds {
    background-color: var(--r-background-color);
  }
}

/*********************************************
 * UTILITY CLASSES
 *********************************************/
.text-muted { color: var(--r-muted) !important; }
.text-subtle { color: var(--r-subtle) !important; }
.text-accent { color: var(--r-accent) !important; }
.text-ink    { color: var(--r-main-color) !important; }

/*********************************************
 * LAYOUT SYSTEM
 *
 * Reveal.js sections: position: absolute; width: 100% (no height).
 * We add height: 100% so layout containers can fill the slide.
 * Do NOT touch position — breaks slide transitions.
 *********************************************/
.reveal .slides > section {
  height: 100%;
  box-sizing: border-box;
}

.slide-margins {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 30;
}

.slide-corner-tl,
.slide-corner-tr,
.slide-corner-bl,
.slide-corner-br {
  position: absolute;
  font-size: 10px;
  line-height: 1.3;
  color: var(--r-subtle);
  max-width: var(--corner-width);
}

.slide-corner-tl { top: var(--margin-edge); left: var(--content-x); text-align: left; }
.slide-corner-tr { top: var(--margin-edge); right: var(--content-x); text-align: right; }
.slide-corner-bl { bottom: var(--margin-edge); left: var(--content-x); text-align: left; }
.slide-corner-br { bottom: var(--margin-edge); right: var(--content-x); text-align: right; }

.slide-corner-tl a,
.slide-corner-tr a,
.slide-corner-bl a,
.slide-corner-br a {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

/*********************************************
 * LAYOUT SYSTEM — single-column center block
 *********************************************/
.slide-single {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  padding: var(--content-top) var(--content-x) var(--content-bottom);
  box-sizing: border-box;
}

.slide-single.align-center {
  justify-content: center;
  align-items: center;
}

.slide-single.align-left {
  justify-content: center;
  align-items: flex-start;
  text-align: left;
}

.slide-single.align-top {
  justify-content: flex-start;
  align-items: flex-start;
  text-align: left;
}

/*********************************************
 * LAYOUT SYSTEM — two-column center block
 *********************************************/
.slide-two-col {
  display: grid;
  width: 100%;
  height: 100%;
  padding: var(--content-top) var(--content-x) var(--content-bottom);
  box-sizing: border-box;
  gap: 48px;
  align-items: center;
  align-content: center;
  clip-path: inset(var(--content-top) var(--content-x) var(--content-bottom) var(--content-x));
}

.slide-two-col.cols-equal {
  grid-template-columns: 1fr 1fr;
}

.slide-two-col.cols-wide-left {
  grid-template-columns: 1.2fr 1fr;
}

.slide-two-col.cols-wide-right {
  grid-template-columns: 1fr 1.2fr;
}

/* column-level alignment */
.slide-two-col .col-center { text-align: center; align-self: center; }
.slide-two-col .col-left   { text-align: left;   align-self: center; }
.slide-two-col .col-top    { text-align: left;   align-self: start;  }

/* Override Reveal.js defaults — our padding already handles margins */
.slide-single img,
.slide-single video,
.slide-single iframe,
.slide-two-col img,
.slide-two-col video,
.slide-two-col iframe {
  max-width: 100%;
}

.slide-single img,
.slide-two-col img {
  filter: grayscale(0.35) sepia(0.2) contrast(0.85) brightness(0.95);
}

.slide-single pre,
.slide-two-col pre {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
}

.slide-single blockquote,
.slide-two-col blockquote {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
}

.slide-single table,
.slide-two-col table {
  margin-top: 0;
  margin-bottom: 0;
}

/*********************************************
 * COMPONENT — author block
 *********************************************/
.author {
  display: flex;
  align-items: center;
  gap: 1em;
}

.reveal .author-photo {
  width: 48px;
  height: 48px;
  border-radius: 4px;
  background: var(--r-subtle);
  position: relative;
  overflow: hidden;
  clip-path: inset(0 round 4px);
  flex-shrink: 0;
}

.reveal .author-photo img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  margin: 0;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.1);
}

.author-photo::before {
  content: 'CK';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--r-background-color);
  background: var(--r-muted);
}

.author-photo.has-image::before {
  display: none;
}

.author-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--r-main-color);
}

.author-role {
  font-size: 10px;
  color: var(--r-muted);
}

/*********************************************
 * COMPONENT — table of contents
 *********************************************/
.toc {
  text-align: left;
}

.toc-item {
  display: flex;
  align-items: baseline;
  margin-bottom: 0.6em;
  font-size: 14px;
}

.toc-item:last-child {
  margin-bottom: 0;
}

.toc-title {
  text-align: right;
  width: 280px;
  color: var(--r-main-color);
}

.toc-page {
  margin-left: 1.5em;
  color: var(--r-muted);
}

.toc-item a {
  text-decoration: none;
  color: inherit;
  transition: color 0.15s ease;
}

.toc-item a:hover {
  color: var(--r-accent);
}

/*********************************************
 * COMPONENT — slide header (in-section element)
 *********************************************/
.slide-header {
  position: absolute;
  top: var(--margin-edge);
  left: var(--content-x);
  z-index: 5;
  pointer-events: none;
  text-align: right;
}

.slide-header-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--r-main-color);
  line-height: 1.2;
}

.slide-header-sub {
  font-size: 10px;
  color: var(--r-subtle);
  margin-top: 4px;
}

/*********************************************
 * COMPONENT — content classes (replace inline styles)
 *********************************************/
.slide-title   { font-size: 1.6em; margin-bottom: 8px; }
.slide-subtitle { font-size: 14px; margin-bottom: 24px; }

.col-prose              { font-size: 13px; line-height: 1.6; }
.col-prose p            { margin-bottom: 16px; }
.col-prose p:last-child { margin-bottom: 0; }
.col-prose-heading      { font-weight: 500; margin-bottom: 16px; }

/*********************************************
 * CodeMirror overrides (for embedded editors)
 *********************************************/
.reveal .CodeMirror {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  line-height: 1.6;
  background: transparent;
  color: var(--r-main-color);
  border: none;
  height: auto;
  padding: 0;
}

/* Reset .reveal pre leak into CM measurement elements */
.reveal .CodeMirror pre {
  width: auto;
  margin: 0;
  font-size: inherit;
  line-height: inherit;
  box-shadow: none;
}

.reveal .CodeMirror-sizer {
  min-height: 0 !important;   /* override CM inline style */
}

.reveal .CodeMirror-gutters {
  background: transparent;
  border: none;
}

.reveal .CodeMirror-linenumber {
  color: var(--r-subtle);
  padding: 0 12px 0 0;
  min-width: 20px;
  text-align: right;
}

.reveal .CodeMirror-cursor {
  border-left: 2px solid var(--r-main-color);
}

.reveal .CodeMirror-selected {
  background: rgba(45, 42, 38, 0.1);
}

.reveal .CodeMirror-lines {
  padding: 8px 0;
}

.reveal .CodeMirror pre.CodeMirror-line {
  padding: 0 0 0 8px;
}

/* CodeMirror syntax — warm paper palette */
.reveal .cm-s-default .cm-keyword   { color: #9d4a30; font-weight: 500; }
.reveal .cm-s-default .cm-def       { color: #2d6a4f; font-weight: 500; }
.reveal .cm-s-default .cm-variable  { color: var(--r-main-color); }
.reveal .cm-s-default .cm-variable-2 { color: #5a4a78; }
.reveal .cm-s-default .cm-string    { color: #4a7a5a; }
.reveal .cm-s-default .cm-string-2  { color: #4a7a5a; }
.reveal .cm-s-default .cm-number    { color: #a05a5a; }
.reveal .cm-s-default .cm-comment   { color: var(--r-muted); font-style: italic; }
.reveal .cm-s-default .cm-builtin   { color: #4a6a8a; }
.reveal .cm-s-default .cm-operator  { color: #7a5a3a; }
.reveal .cm-s-default .cm-meta      { color: var(--r-muted); }
.reveal .cm-s-default .cm-property  { color: #5a5a7a; }
.reveal .cm-s-default .cm-atom      { color: #8a4a6a; }
.reveal .cm-s-default .cm-punctuation { color: var(--r-muted); }

/*********************************************
 * Paper.js canvas container
 *********************************************/
.diagram-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.diagram-container canvas {
  width: 100%;
  height: 100%;
}

/*********************************************
 * COMPONENT — section divider
 *********************************************/
.slide-divider {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.slide-divider h2 {
  font-size: 1.8em;
  font-weight: 600;
}

.slide-divider .divider-sub {
  font-size: 13px;
  color: var(--r-muted);
  margin-top: 12px;
}

/*********************************************
 * COMPONENT — subsections
 *********************************************/
.subsections {
  display: flex;
  gap: 48px;
  width: 100%;
}

.subsection {
  flex: 1;
}

.subsection svg {
  display: block;
  margin: 0 auto 12px;
  color: var(--r-accent);
}

.subsection h3 {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 12px;
}

.subsection p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--r-muted);
}

/*********************************************
 * COMPONENT — course pipeline (timeline)
 *********************************************/
.course-pipeline {
  position: relative;
  display: flex;
  width: 100%;
}

/* Continuous horizontal line */
.course-pipeline::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 30px;
  height: 1px;
  background: var(--r-main-color);
}

.pipeline-segment {
  position: relative;
  padding-top: 44px;
  min-width: 0;
  text-align: left;
}

/* Solid dot at left edge of each segment */
.pipeline-segment::before,
.pipeline-endpoint::before {
  content: '';
  position: absolute;
  left: 0;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--r-main-color);
  transform: translateX(-50%);
  z-index: 2;
}

/* Range label centered above the line */
.pipeline-range {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--r-muted);
  white-space: nowrap;
}

.pipeline-step {
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--r-muted);
  margin-bottom: 4px;
}

.pipeline-desc {
  font-size: 14px;
  font-weight: 600;
  color: var(--r-main-color);
  line-height: 1.4;
}

/* Final endpoint */
.pipeline-endpoint {
  position: relative;
  flex: 0 0 auto;
  min-width: 60px;
  padding-top: 44px;
}

/* Mask line past the final dot */
.pipeline-endpoint::after {
  content: '';
  position: absolute;
  left: 6px;
  right: 0;
  top: 29px;
  height: 3px;
  background: var(--r-background-color);
  z-index: 1;
}

/* Accent color for final point */
.pipeline-accent::before {
  background: var(--r-accent);
}

.pipeline-accent .pipeline-step,
.pipeline-accent .pipeline-desc {
  color: var(--r-accent);
}

.pipeline-topics {
  margin-top: 12px;
  font-size: 10px;
  color: var(--r-muted);
  line-height: 1.6;
}

.pipeline-step svg {
  vertical-align: -2px;
  margin-right: 3px;
}

/*********************************************
 * MOBILE — must be last to override components
 *********************************************/
@media (max-width: 1024px) {
  .slide-margins {
    display: none;
  }

  .slide-header {
    left: 0;
    right: 0;
    text-align: center;
  }

  .slide-header-title {
    font-size: 32px;
  }

  .slide-header-sub {
    display: none;
  }

  .course-pipeline {
    flex-direction: column;
    gap: 0;
  }

  .course-pipeline::before {
    display: none;
  }

  .pipeline-segment {
    padding-top: 0;
    padding-left: 24px;
    padding-bottom: 20px;
    border-left: 1px solid var(--r-main-color);
    margin-left: 6px;
  }

  .pipeline-segment::before,
  .pipeline-endpoint::before {
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    transform: translateX(0);
  }

  .pipeline-range {
    position: static;
    text-align: left;
    margin-bottom: 4px;
  }

  .pipeline-endpoint {
    padding-top: 0;
    padding-left: 24px;
    margin-left: 6px;
  }

  .pipeline-endpoint::after {
    display: none;
  }
}

/* Circuit diagrams — node label vertical centering */
#multiplier-svg text[id^="mNt"],
#adder-svg text[id^="fL"] {
  dominant-baseline: central;
  transform: translateY(-4px);
}