/* ==========================================================================
   Presentation — Kami Design System overrides for Reveal.js
   Matches blog's light + dark themes with design token consistency
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Base Slide Background & Typography
   -------------------------------------------------------------------------- */

.reveal {
  font-family: var(--serif);
  font-weight: 400;
  color: var(--text);
}

.reveal .slides section {
  background-color: var(--bg);
  transition: background-color 0.3s ease;
  height: 100%;
  width: 100%;
  box-sizing: border-box;
  padding: 60px 80px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  text-align: left;
}

/* Ensure slides fill consistently even with little content */
.reveal .slides section > *:first-child {
  margin-top: 0;
}

@media screen and (max-width: 800px) {
  .reveal .slides section {
    padding: 30px 40px;
  }
}

/* Light mode defaults */
:root {
  --reveal-heading-color: var(--near-black);
  --reveal-text-color: var(--near-black);
  --reveal-link-color: var(--brand);
  --reveal-link-hover: var(--dark-warm);
  --reveal-code-bg: var(--ivory);
  --reveal-code-text: var(--text);
  --reveal-code-border: var(--border-soft);
  --reveal-table-border: var(--border-color);
  --reveal-table-stripe: var(--surface);
  --reveal-table-header-bg: var(--surface);
  --reveal-controls-color: var(--brand);
  --reveal-progress-color: var(--brand);
  --reveal-progress-bg: var(--border-color);
  --reveal-blockquote-border: var(--brand);
  --reveal-blockquote-text: var(--olive);
}

/* --------------------------------------------------------------------------
   2. Dark Mode Overrides
   -------------------------------------------------------------------------- */

[data-theme="dark"] {
  --reveal-heading-color: #e8e6dc;
  --reveal-text-color: #e8e6dc;
  --reveal-link-color: #6b9ecf;
  --reveal-link-hover: #e8e6dc;
  --reveal-code-bg: #252523;
  --reveal-code-text: #e8e6dc;
  --reveal-code-border: #383834;
  --reveal-table-border: #40403c;
  --reveal-table-stripe: var(--dark-surface);
  --reveal-table-header-bg: var(--dark-surface);
  --reveal-controls-color: #6b9ecf;
  --reveal-progress-color: #6b9ecf;
  --reveal-progress-bg: #40403c;
  --reveal-blockquote-border: #6b9ecf;
  --reveal-blockquote-text: #b0aea4;
}

/* --------------------------------------------------------------------------
   3. Headings
   -------------------------------------------------------------------------- */

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--reveal-heading-color);
  text-transform: none;
  letter-spacing: 0;
  line-height: 1.2;
}

.reveal h1 { font-size: 3rem; }
.reveal h2 { font-size: 2.25rem; }
.reveal h3 { font-size: 1.75rem; }
.reveal h4 { font-size: 1.5rem; }

/* --------------------------------------------------------------------------
   4. Body Text & Lists
   -------------------------------------------------------------------------- */

.reveal p,
.reveal li {
  font-size: 1.625rem;
  color: var(--reveal-text-color);
  line-height: 1.55;
}

.reveal ul {
  list-style-type: disc;
  margin-bottom: var(--r-block-margin);
}

.reveal ol {
  list-style-type: decimal;
  margin-bottom: var(--r-block-margin);
}

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

/* --------------------------------------------------------------------------
   5. Links
   -------------------------------------------------------------------------- */

.reveal a {
  color: var(--reveal-link-color);
  text-decoration: none;
}

.reveal a:hover {
  color: var(--reveal-link-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --------------------------------------------------------------------------
   6. Code Blocks
   -------------------------------------------------------------------------- */

.reveal pre {
  display: block;
  position: relative;
  font-family: var(--mono);
  font-size: 1rem;
  line-height: 1.5;
  background-color: var(--reveal-code-bg);
  color: var(--reveal-code-text);
  border: 1px solid var(--reveal-code-border);
  border-radius: 8px;
  padding: 13px 19px;
  box-shadow: none;
  width: 100%;
  max-width: none;
  margin: 0 0 var(--r-block-margin) 0;
}

.reveal pre code {
  font-family: var(--mono);
  font-size: inherit;
  background: transparent;
  padding: 0;
  border: none;
  color: inherit;
  max-height: none;
}

.reveal code {
  font-family: var(--mono);
  font-size: 1rem;
  background-color: var(--reveal-code-bg);
  border: 1px solid var(--reveal-code-border);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--reveal-code-text);
}

/* Override Reveal's default code styling */
.reveal pre code.hljs {
  background: transparent;
  padding: 0;
}

/* --------------------------------------------------------------------------
   7. Tables
   -------------------------------------------------------------------------- */

.reveal table {
  font-size: 1.0625rem;
  margin: 0 auto var(--r-block-margin) auto;
  border-collapse: collapse;
  border: 1px solid var(--reveal-table-border);
}

.reveal table th,
.reveal table td {
  padding: 8px 14px;
  border-bottom: 1px solid var(--reveal-table-border);
  color: var(--reveal-text-color);
}

.reveal table th {
  font-weight: 500;
  background-color: var(--reveal-table-header-bg);
  color: var(--reveal-heading-color);
}

.reveal table tr:nth-child(even) {
  background-color: var(--reveal-table-stripe);
}

/* Override Reveal's default table border/th styling */
.reveal table th,
.reveal table td {
  border-bottom: 1px solid var(--reveal-table-border);
}
.reveal table th {
  border-bottom: 1px solid var(--reveal-table-border);
}

/* --------------------------------------------------------------------------
   8. Blockquotes
   -------------------------------------------------------------------------- */

.reveal blockquote {
  display: block;
  position: relative;
  width: auto;
  margin: var(--space-md) auto;
  padding: var(--space-sm) 0 var(--space-sm) var(--space-md);
  border-left: 3px solid var(--reveal-blockquote-border);
  color: var(--reveal-blockquote-text);
  background: transparent;
  box-shadow: none;
  font-size: 1.25rem;
  text-align: left;
}

.reveal blockquote p {
  color: inherit;
}

/* --------------------------------------------------------------------------
   9. Progress Bar
   -------------------------------------------------------------------------- */

.reveal .progress {
  height: 3px;
  background-color: var(--reveal-progress-bg);
}

.reveal .progress span {
  background-color: var(--reveal-progress-color);
  transition: width 0.3s ease;
}

/* --------------------------------------------------------------------------
   10. Navigation Controls
   -------------------------------------------------------------------------- */

.reveal .controls {
  bottom: 30px;
}

.reveal .controls .controls-arrow {
  color: var(--reveal-controls-color);
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.reveal .controls .controls-arrow:hover,
.reveal .controls .controls-arrow:focus {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   11. Slide Number
   -------------------------------------------------------------------------- */

.reveal .slide-number {
  font-family: var(--sans);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: transparent;
}

[data-theme="dark"] .reveal .slide-number {
  color: #8a8880;
}

/* --------------------------------------------------------------------------
   12. Horizontal Rule (within slides, not the separator)
   -------------------------------------------------------------------------- */

.reveal hr {
  margin: var(--space-lg) 0;
  border: 0;
  border-top: 1px solid var(--reveal-table-border);
  height: 0;
}

/* --------------------------------------------------------------------------
   13. Images
   -------------------------------------------------------------------------- */

.reveal section img {
  border: none;
  box-shadow: none;
  background: transparent;
  border-radius: 6px;
}

/* --------------------------------------------------------------------------
   14. Presentation Page Layout
   -------------------------------------------------------------------------- */

.presentation-page {
  background-color: var(--bg);
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   15. Theme Toggle Button (on presentation page)
   -------------------------------------------------------------------------- */

.presentation-theme-toggle {
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  z-index: 100;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;

  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.presentation-theme-toggle:hover {
  color: var(--brand);
  border-color: var(--brand);
  background-color: var(--surface);
}

.presentation-theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.presentation-theme-toggle .sun-icon circle,
.presentation-theme-toggle .sun-icon line {
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.presentation-theme-toggle .sun-icon circle {
  fill: currentColor;
  stroke: none;
}

@media screen and (max-width: 600px) {
  .presentation-theme-toggle {
    top: var(--space-sm);
    right: var(--space-sm);
    width: 32px;
    height: 32px;
  }

  .presentation-theme-toggle svg {
    width: 16px;
    height: 16px;
  }
}

/* --------------------------------------------------------------------------
   15b. Close Button (exit presentation)
   -------------------------------------------------------------------------- */

.presentation-close {
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  z-index: 100;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;

  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.presentation-close:hover {
  color: #c44;
  border-color: #c44;
  background-color: var(--surface);
}

.presentation-close svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}

@media screen and (max-width: 600px) {
  .presentation-close {
    top: var(--space-sm);
    left: var(--space-sm);
    width: 32px;
    height: 32px;
  }

  .presentation-close svg {
    width: 16px;
    height: 16px;
  }
}

/* --------------------------------------------------------------------------
   15c. Font Size Controls
   -------------------------------------------------------------------------- */

.presentation-font-controls {
  position: fixed;
  bottom: var(--space-md);
  left: var(--space-md);
  z-index: 100;
  display: flex;
  flex-direction: row;
  gap: var(--space-xs);
}

.font-size-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;

  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  cursor: pointer;

  font-family: var(--serif);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);

  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.font-size-btn:hover {
  color: var(--brand);
  border-color: var(--brand);
  background-color: var(--surface);
}

@media screen and (max-width: 600px) {
  .presentation-font-controls {
    bottom: var(--space-sm);
    left: var(--space-sm);
  }

  .font-size-btn {
    width: 32px;
    height: 32px;
    font-size: 0.8125rem;
  }
}