@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

/* Base reveal.js styles
 *
 * Copy this file as styles.css for each new presentation.
 * Customize the CSS variables (especially colors) for your theme.
 *
 * IMPORTANT: All font sizes use pt (points) for predictable sizing.
 * Base text is intentionally small (16pt) to fit content-heavy slides.
 * Use .text-lg, .text-xl, etc. classes when slides have less content.
 */

/* ===========================================
   CSS VARIABLES - Customize these for each presentation
   =========================================== */
:root {
  /* ===========================================
     BACKGROUND COLORS
     For dark presentations, change to dark colors (e.g., #1a1a2e, #0d1117)
     Then update --text-color and --muted-color to light colors below.
     =========================================== */
  --background-color: #0b1020;
  --section-divider-bg: #070a12;

  /* Typography - ALWAYS use pt for font sizes */
  --heading-font: "Space Grotesk", Arial, sans-serif;
  --body-font: "IBM Plex Sans", Arial, sans-serif;
  --base-font-size: 32px;   /* Only px value - sets reveal.js base */
  --text-size: 17pt;
  --h1-size: 48pt;
  --h2-size: 31pt;
  --h3-size: 21pt;
  --footnote-size: 9.5pt;

  /* Colors - CUSTOMIZE THESE */
  --primary-color: #59d9ff;
  --secondary-color: #ffbd59;
  --agent-color: #f472b6;
  --good-color: #67e8a5;
  --text-color: #f4f7ff;
  --muted-color: #9facbf;
  --line-color: #2b3b59;

  /* Layout */
  --slide-padding: 62px;
  --slide-padding-top: 38px;
  --content-gap: 24px;

  /* Border radius for custom components */
  --box-radius: 14px;
}

/* ===========================================
   BASE STYLES - Override reveal.js defaults
   =========================================== */

.reveal {
  font-family: var(--body-font);
  font-size: var(--base-font-size);
}

/* Restore bold after reset.css strips it with font: inherit */
.reveal strong,
.reveal b {
  font-weight: bold;
}

/* Apply background colors */
.reveal-viewport {
  background-color: var(--background-color);
}

/* Section divider background via data-state */
.reveal-viewport.is-section-divider .slide-background.present {
  background-color: var(--section-divider-bg) !important;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  font-family: var(--heading-font);
  text-transform: none;
  color: var(--text-color);
  font-weight: 600;
  line-height: 1.2;
}

.reveal h1 { font-size: var(--h1-size); }
.reveal h2 { font-size: var(--h2-size); margin-bottom: 0; }
.reveal h3 { font-size: var(--h3-size); }

.reveal p,
.reveal li,
.reveal td,
.reveal th,
.reveal blockquote {
  font-size: var(--text-size);
  color: var(--text-color);
  line-height: 1.5;
}

/* ===========================================
   LISTS
   =========================================== */

.reveal ul {
  list-style: none;
  padding-left: 0;
  margin: 15px 0;
}

.reveal ul li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 10px;
}

.reveal ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--text-color);
  border-radius: 50%;
}

.reveal ul ul li::before {
  background: var(--muted-color);
  width: 6px;
  height: 6px;
}

/* Prevent double-sizing for nested elements */
.reveal blockquote p {
  font-size: inherit;
}

/* ===========================================
   SLIDE LAYOUT
   =========================================== */

.reveal .slides section {
  height: 100%;
  display: flex !important;
  flex-direction: column !important;
  padding: var(--slide-padding-top) var(--slide-padding) var(--slide-padding) var(--slide-padding) !important;
  box-sizing: border-box;
  text-align: left;
}

/* Vertical stack wrapper - no padding, just pass through */
.reveal .slides section.stack {
  padding: 0 !important;
}

/* Content area - fills remaining space */
.reveal .slides section > .content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: var(--content-gap);
  text-align: left;
}

/* Footnotes at bottom */
.reveal .slides section > .footnote {
  position: absolute;
  bottom: 15px;
  left: var(--slide-padding);
  right: var(--slide-padding);
  font-size: var(--footnote-size);
  color: var(--muted-color);
}

/* ===========================================
   SECTION DIVIDERS - Centered title slides
   =========================================== */

.reveal .slides section.section-divider {
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  text-align: center;
}

.reveal .slides section.section-divider h1 {
  font-size: 56pt;
  text-align: center;
}

.reveal .slides section.section-divider p {
  font-size: 20pt;
  color: var(--muted-color);
}

/* ===========================================
   TEXT SIZE UTILITIES

   Base text is 16pt - use these to scale UP when
   slides have less content and you want to fill space.
   =========================================== */

.text-lg { font-size: 18pt !important; }   /* Slightly larger */
.text-xl { font-size: 20pt !important; }   /* Medium emphasis */
.text-2xl { font-size: 24pt !important; }  /* Strong emphasis */
.text-3xl { font-size: 28pt !important; }  /* Very large */
.text-4xl { font-size: 32pt !important; }  /* Maximum body text */

/* Other text utilities */
.text-muted { color: var(--muted-color) !important; }
.text-center { text-align: center !important; }
.text-uppercase { text-transform: uppercase; letter-spacing: 0.1em; }
.font-light { font-weight: 300; }
.font-bold { font-weight: 600; }

/* ===========================================
   BLOCKQUOTES
   =========================================== */

.reveal blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 20px;
  margin: 20px 0;
  font-style: italic;
  background: none;
  box-shadow: none;
  width: 100%;
  max-width: none;
}

.reveal blockquote cite {
  display: block;
  margin-top: 10px;
  font-style: normal;
  color: var(--muted-color);
}

/* ===========================================
   OPTIONAL: TITLE WITH UNDERLINE

   Add this to presentations where you want
   a line under the slide title.
   =========================================== */

/*
.reveal .slides section > h1,
.reveal .slides section > h2 {
  flex-shrink: 0;
  margin: 0;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--line-color);
}
*/

/* ===========================================
   OPTIONAL: DECORATIVE ELEMENTS
   =========================================== */

/* Top decorative line on all slides */
/*
.reveal .slides section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-color);
}
*/

/* Bottom decorative line */
/*
.reveal .slides section::after {
  content: '';
  position: absolute;
  bottom: 40px;
  left: var(--slide-padding);
  right: var(--slide-padding);
  height: 2px;
  background: var(--line-color);
}
*/

/* ===========================================
   CODE-ARCHAEOLOGY THEME
   =========================================== */

.reveal-viewport {
  background:
    radial-gradient(circle at 85% 8%, rgba(89, 217, 255, 0.13), transparent 27%),
    radial-gradient(circle at 8% 92%, rgba(244, 114, 182, 0.10), transparent 25%),
    var(--background-color);
}

.reveal .slides section:not(.section-divider)::after {
  content: '';
  position: absolute;
  left: var(--slide-padding);
  right: var(--slide-padding);
  bottom: 36px;
  height: 1px;
  background: linear-gradient(90deg, var(--primary-color), transparent 45%, var(--agent-color));
  opacity: 0.35;
}

.reveal .slides section > h2 {
  flex-shrink: 0;
  margin: 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-color);
}

.reveal .slides section > h2::before {
  content: '// ';
  color: var(--primary-color);
  font-family: "IBM Plex Mono", monospace;
  font-weight: 500;
}

.reveal .slides section.section-divider {
  background:
    linear-gradient(rgba(89,217,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(89,217,255,.035) 1px, transparent 1px);
  background-size: 42px 42px;
}

.reveal .slides section.section-divider h1 {
  max-width: 1060px;
  margin: 0;
  letter-spacing: -0.04em;
}

.reveal .slides section.section-divider .kicker,
.reveal .kicker {
  margin: 0 0 14px 0;
  color: var(--secondary-color);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12pt;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.reveal .slides section.section-divider .subtitle {
  max-width: 900px;
  margin: 18px 0 0 0;
  color: var(--muted-color);
  font-size: 22pt;
}

.reveal .slides section.section-divider .course {
  margin-top: 34px;
  color: var(--primary-color);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12pt;
}

.reveal a { color: var(--primary-color); }
.reveal a:hover { color: var(--secondary-color); }

.reveal code,
.reveal pre {
  font-family: "IBM Plex Mono", monospace;
}

.reveal pre {
  width: 100%;
  margin: 0;
  padding: 18px 22px;
  box-sizing: border-box;
  background: #060914;
  border: 1px solid #283653;
  border-radius: var(--box-radius);
  box-shadow: 0 16px 38px rgba(0,0,0,.28);
}

.reveal pre code {
  max-height: none;
  padding: 0;
  color: #d9e5ff;
  font-size: 14pt;
  line-height: 1.45;
}

.reveal .code-key { color: var(--primary-color); }
.reveal .code-string { color: var(--good-color); }
.reveal .code-comment { color: #70809b; }
.reveal .code-accent { color: var(--secondary-color); }

.reveal .content {
  min-height: 0;
}

.reveal .card {
  padding: 24px 26px;
  border: 1px solid var(--line-color);
  border-radius: var(--box-radius);
  background: linear-gradient(145deg, rgba(22,31,53,.94), rgba(12,18,33,.95));
  box-shadow: 0 18px 44px rgba(0,0,0,.18);
}

.reveal .card h3,
.reveal .artifact-note h3 {
  margin: 0 0 12px 0;
  color: var(--primary-color);
}

.reveal .card p:last-child,
.reveal .artifact-note p:last-child { margin-bottom: 0; }

.reveal .card.amber { border-color: rgba(255,189,89,.48); }
.reveal .card.amber h3 { color: var(--secondary-color); }
.reveal .card.magenta { border-color: rgba(244,114,182,.48); }
.reveal .card.magenta h3 { color: var(--agent-color); }
.reveal .card.green { border-color: rgba(103,232,165,.48); }
.reveal .card.green h3 { color: var(--good-color); }

.reveal .metric {
  margin: 0;
  color: var(--secondary-color);
  font-family: "Space Grotesk", sans-serif;
  font-size: 42pt;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.reveal .metric-label {
  margin: 2px 0 16px 0;
  color: var(--muted-color);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11pt;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.reveal .pill {
  display: inline-block;
  padding: 7px 11px;
  margin: 0 6px 6px 0;
  border: 1px solid rgba(89,217,255,.38);
  border-radius: 999px;
  color: var(--primary-color);
  background: rgba(89,217,255,.08);
  font-family: "IBM Plex Mono", monospace;
  font-size: 10pt;
}

.reveal .artifact-frame {
  min-height: 0;
  overflow: hidden;
  border: 1px solid rgba(255,189,89,.54);
  border-radius: 18px;
  background: #f4f1e8;
  box-shadow: 0 20px 55px rgba(0,0,0,.38), 0 0 0 6px rgba(255,189,89,.06);
}

.reveal .artifact-frame img {
  width: 100%;
  height: 100%;
  margin: 0;
  object-fit: cover;
  max-height: none;
}

.reveal .artifact-note {
  padding: 23px 26px;
  border-left: 4px solid var(--secondary-color);
  background: linear-gradient(90deg, rgba(255,189,89,.11), transparent);
}

.reveal .quote-big {
  box-sizing: border-box;
  margin: 0;
  padding: 28px 34px;
  border-left: 5px solid var(--secondary-color);
  color: var(--text-color);
  font-family: "Space Grotesk", sans-serif;
  font-size: 25pt;
  font-style: normal;
  line-height: 1.35;
}

.reveal .branch-label {
  margin: 0 0 14px 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11pt;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.reveal .branch-label.completion { color: var(--primary-color); }
.reveal .branch-label.instruct { color: var(--secondary-color); }

.reveal .vs {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-color);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12pt;
}

.reveal .timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  padding-top: 32px;
}

.reveal .timeline::before {
  content: '';
  position: absolute;
  top: 14px;
  left: 4%;
  right: 4%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--agent-color));
}

.reveal .timeline-item {
  position: relative;
  padding: 18px 16px;
  border: 1px solid var(--line-color);
  border-radius: 12px;
  background: rgba(14,21,38,.88);
}

.reveal .timeline-item::before {
  content: '';
  position: absolute;
  top: -25px;
  left: calc(50% - 6px);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--secondary-color);
  box-shadow: 0 0 0 5px rgba(255,189,89,.13);
}

.reveal .timeline-item h3 {
  margin: 0 0 7px 0;
  color: var(--secondary-color);
  font-size: 17pt;
}

.reveal .timeline-item p {
  margin: 0;
  color: var(--muted-color);
  font-size: 12pt;
  line-height: 1.35;
}

.reveal .step-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  align-items: stretch;
}

.reveal .step {
  position: relative;
  padding: 20px 16px;
  border: 1px solid var(--line-color);
  border-radius: 12px;
  background: rgba(16,24,43,.9);
}

.reveal .step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -13px;
  top: 40%;
  z-index: 2;
  color: var(--primary-color);
  font-size: 18pt;
}

.reveal .step .num {
  margin: 0 0 7px 0;
  color: var(--primary-color);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11pt;
}

.reveal .step h3 { margin: 0 0 7px 0; font-size: 17pt; }
.reveal .step p { margin: 0; color: var(--muted-color); font-size: 12pt; line-height: 1.35; }

.reveal table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border: 1px solid var(--line-color);
  border-radius: 12px;
  background: rgba(9,14,27,.68);
}

.reveal table th {
  padding: 12px 15px;
  color: var(--primary-color);
  background: rgba(89,217,255,.08);
  border-bottom: 1px solid var(--line-color);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12pt;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.reveal table td {
  padding: 10px 15px;
  border-bottom: 1px solid rgba(43,59,89,.66);
  font-size: 13pt;
  line-height: 1.25;
}

.reveal table tr:last-child td { border-bottom: 0; }

.reveal .footnote a { color: var(--muted-color); text-decoration-color: rgba(159,172,191,.45); }

.reveal .mermaid {
  width: 100%;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

.reveal .mermaid svg {
  max-width: 100% !important;
  max-height: 100% !important;
}

.reveal .mermaid p,
.reveal .mermaid span {
  margin: 0;
  font-size: 10pt;
  line-height: 1.15;
}

.reveal .big-equation {
  margin: 0;
  padding: 24px 30px;
  border: 1px solid rgba(244,114,182,.45);
  border-radius: 14px;
  background: rgba(244,114,182,.07);
  color: #fff;
  font-family: "IBM Plex Mono", monospace;
  font-size: 20pt;
  line-height: 1.55;
}

.reveal .warning {
  padding: 18px 22px;
  border: 1px solid rgba(255,189,89,.45);
  border-radius: 12px;
  background: rgba(255,189,89,.08);
}

.reveal .warning p { margin: 0; color: #ffe7ba; }

.reveal .source-tag {
  color: var(--secondary-color);
  font-family: "IBM Plex Mono", monospace;
  font-size: 9pt;
}

.reveal .protocol-ladder,
.reveal .rl-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.reveal .protocol-node,
.reveal .rl-node {
  width: 82%;
  padding: 10px 14px;
  border: 1px solid var(--line-color);
  border-radius: 9px;
  background: rgba(16,24,43,.94);
  text-align: center;
}

.reveal .protocol-node p,
.reveal .rl-node p {
  margin: 0;
  font-size: 12pt;
  line-height: 1.2;
}

.reveal .protocol-node.model { border-color: rgba(89,217,255,.55); }
.reveal .protocol-node.host { border-color: rgba(255,189,89,.55); }
.reveal .protocol-node.mcp { border-color: rgba(244,114,182,.55); }
.reveal .rl-node.reward { border-color: rgba(103,232,165,.55); }

.reveal .protocol-arrow,
.reveal .rl-arrow {
  margin: 0;
  color: var(--secondary-color);
  font-family: "IBM Plex Mono", monospace;
  font-size: 9pt;
  line-height: 1;
  text-align: center;
}

/* Reliable one-slide-per-page export when printing directly from Chrome. */
@page {
  size: 1280px 720px;
  margin: 0;
}

@media print {
  html,
  body,
  .reveal,
  .reveal .slides {
    position: static !important;
    width: auto !important;
    height: auto !important;
    min-height: 0 !important;
    overflow: visible !important;
    transform: none !important;
    background: #0b1020 !important;
  }

  .reveal .slides section {
    position: relative !important;
    inset: auto !important;
    width: 1280px !important;
    height: 720px !important;
    min-height: 720px !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
    margin: 0 !important;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    page-break-after: always !important;
    break-after: page !important;
    page-break-inside: avoid !important;
    break-inside: avoid-page !important;
    background:
      radial-gradient(circle at 85% 8%, rgba(89, 217, 255, 0.13), transparent 27%),
      radial-gradient(circle at 8% 92%, rgba(244, 114, 182, 0.10), transparent 25%),
      #0b1020 !important;
  }

  .reveal .slides section.section-divider {
    background:
      linear-gradient(rgba(89,217,255,.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(89,217,255,.035) 1px, transparent 1px),
      #070a12 !important;
    background-size: 42px 42px !important;
  }

  .reveal .controls,
  .reveal .progress,
  .reveal .slide-number {
    display: none !important;
  }
}