/* Dark blue theme, layered on top of reveal.js black.css */

:root {
  --bg: #0b1220;
  --bg-glow: #12213f;
  --surface: #131d33;
  --border: #23314f;
  --text: #d6e0f0;
  --muted: #8395b8;
  --heading: #f3f7ff;
  --accent: #4f8cff;
  --accent-light: #8ec5ff;

  --r-background-color: var(--bg);
  --r-main-font: "Inter", system-ui, sans-serif;
  --r-main-font-size: 34px;
  --r-main-color: var(--text);
  --r-heading-font: "Inter", system-ui, sans-serif;
  --r-heading-color: var(--heading);
  --r-heading-text-transform: none;
  --r-heading-font-weight: 700;
  --r-heading-letter-spacing: -0.02em;
  --r-heading1-size: 2.4em;
  --r-heading2-size: 1.5em;
  --r-heading3-size: 1.1em;
  --r-code-font: "JetBrains Mono", ui-monospace, monospace;
  --r-link-color: var(--accent-light);
  --r-link-color-hover: #ffffff;
  --r-link-color-dark: var(--accent);
  --r-selection-background-color: rgba(79, 140, 255, 0.5);
}

.reveal-viewport {
  background: radial-gradient(ellipse at 85% 0%, var(--bg-glow) 0%, var(--bg) 60%);
}

/* Content slides: left-aligned, heading with an accent bar */
.reveal .slides section {
  text-align: left;
}

.reveal h2 {
  padding-bottom: 0.35em;
  margin-bottom: 0.9em;
  position: relative;
}

.reveal h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2.5em;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
}

.reveal h3 {
  color: var(--accent-light);
}

.reveal ul,
.reveal ol {
  display: block;
  margin-left: 1.1em;
}

.reveal li {
  margin: 0.35em 0;
}

.reveal li::marker {
  color: var(--accent);
}

.reveal strong {
  color: var(--accent-light);
}

.reveal em {
  color: var(--heading);
}

/* Code */
.reveal code {
  font-size: 0.85em;
}

.reveal :not(pre) > code {
  padding: 0.1em 0.35em;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent-light);
}

.reveal pre {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.reveal pre code.hljs {
  padding: 0.8em 1em;
  background: var(--surface);
}

/* Tables */
.reveal table {
  margin: 0;
  font-size: 0.75em;
}

.reveal table th {
  color: var(--heading);
  background: var(--surface);
}

.reveal table th,
.reveal table td {
  padding: 0.4em 0.8em;
  border-bottom: 1px solid var(--border);
}

/* Blockquotes */
.reveal blockquote {
  width: auto;
  margin: 1em 0;
  padding: 0.5em 1em;
  font-style: normal;
  color: var(--heading);
  background: var(--surface);
  border-left: 4px solid var(--accent);
  border-radius: 0 8px 8px 0;
  box-shadow: none;
}

/* Title slide: <!-- .slide: class="title" --> */
.reveal .slides section.title {
  text-align: center;
}

.reveal section.title h1 {
  margin-bottom: 0.3em;
  background: linear-gradient(90deg, var(--heading), var(--accent-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.reveal section.title h1 + p {
  font-size: 1.05em;
  color: var(--text);
  margin-bottom: 1.6em;
}

.reveal section.title p {
  color: var(--muted);
  font-size: 0.8em;
  margin: 0.3em 0;
}

/* Section divider slide: <!-- .slide: class="section" --> */
.reveal .slides section.section {
  text-align: center;
}

.reveal section.section h2 {
  font-size: 2em;
}

.reveal section.section h2::after {
  left: 50%;
  transform: translateX(-50%);
}

/* Small muted text, e.g. citations */
.reveal small,
.reveal .muted {
  color: var(--muted);
}

/* Chrome */
.reveal .controls {
  color: var(--accent);
}

.reveal .progress {
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--accent);
}

/* Slide minimap (minimap.js) */
#minimap-toggle {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 50;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

#minimap-toggle:hover,
#minimap-toggle[aria-expanded="true"] {
  color: var(--accent-light);
  border-color: var(--accent);
}

#minimap {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  width: 260px;
  padding: 70px 12px 16px;
  box-sizing: border-box;
  overflow-y: auto;
  background: rgba(11, 18, 32, 0.96);
  border-right: 1px solid var(--border);
  font-family: var(--r-main-font);
  transform: translateX(-100%);
  transition: transform 0.2s ease;
}

.minimap-open #minimap {
  transform: none;
}

.minimap-open .reveal {
  margin-left: 260px;
  width: calc(100% - 260px);
}

.minimap-title {
  position: absolute;
  top: 25px;
  left: 66px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

#minimap ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

#minimap li.sub {
  padding-left: 18px;
}

#minimap button {
  width: 100%;
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 10px;
  margin: 2px 0;
  border: none;
  border-left: 3px solid transparent;
  border-radius: 0 6px 6px 0;
  background: none;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
}

#minimap button:hover {
  background: var(--surface);
}

#minimap li.active button {
  background: var(--surface);
  border-left-color: var(--accent);
  color: var(--heading);
}

#minimap .num {
  min-width: 1.6em;
  font-family: var(--r-code-font);
  font-size: 12px;
  color: var(--muted);
}

#minimap li.active .num {
  color: var(--accent-light);
}

/* Narrow screens: overlay instead of shrinking the deck */
@media (max-width: 700px) {
  .minimap-open .reveal {
    margin-left: 0;
    width: 100%;
  }
}

@media print {
  #minimap,
  #minimap-toggle {
    display: none;
  }
}

.reveal .slide-number {
  font-family: var(--r-code-font);
  font-size: 14px;
  color: var(--muted);
  background: transparent;
  left: 16px;
  right: auto;
  bottom: 16px;
}