/**
 * Light theme for reveal.js
 * Dark-on-light, readable, minimal
 * 
 * Works with White Default base theme from reveal.js
 * Drop into ~/.revealjs/reveal.js/dist/theme/
 */

:root {
  --bg: #ffffff;
  --bg-secondary: #f4f4f4;
  --bg-code: #e8e8e8;
  --text: #1a1a1a;
  --text-muted: #555555;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --font-body: "Adwaita Sans", Helvetica, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Consolas, monospace;
  --h1-size: 2em;
  --h2-size: 1.4em;
  --body-size: 25px;
  --small-size: 0.65em;
  --code-size: 0.85em;
  --pre-size: 0.75em;
}

.reveal {
  font-family: var(--font-mono);
  font-size: var(--body-size);
  color: var(--text);
  text-align: left;
}

.reveal .slides { text-align: left; }

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text);
  line-height: 1.1;
  margin: 0 0 0.5em 0;
  text-shadow: none;
  text-transform: uppercase;
  word-wrap: break-word;
}

.reveal h1 { font-size: var(--h1-size); font-weight: 700; margin-bottom: 1.6em; }
.reveal h2 { font-size: var(--h2-size); margin-bottom: 0.7em; }
.reveal h3 { font-size: 1.15em; }
.reveal h4 { font-size: 0.9em; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); }

.reveal p { line-height: 1.35; margin: 0 0 0.6em 0; }
.reveal strong { font-weight: 700; }
.reveal em { font-style: italic; }

.reveal ul, .reveal ol {
  display: block;
  text-align: left;
  margin: 0 0 0.5em 0;
  padding-left: 1.2em;
}

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

.reveal li { margin-bottom: 0.15em; line-height: 1.3; }
.reveal li::marker { color: var(--accent); }

.reveal code {
  font-family: var(--font-mono);
  font-size: var(--code-size);
  background: var(--bg-code);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

.reveal pre {
  font-family: var(--font-mono);
  font-size: var(--pre-size);
  background: var(--bg-code);
  padding: 0.6em 1em;
  border-radius: 4px;
  margin: 0 0 0.6em 0;
  width: 100%;
  box-sizing: border-box;
  text-align: left;
  line-height: 1.4;
  box-shadow: none;
}

.reveal pre code { background: none; padding: 0; font-size: 1em; }

.reveal blockquote {
  font-style: italic;
  color: var(--text-muted);
  border-left: 4px solid var(--accent);
  padding: 0.5em 1em;
  margin: 0 0 1em 0;
  background: var(--bg-secondary);
  box-shadow: none;
}

.reveal blockquote p { margin: 0; }
.reveal blockquote p:first-child::before { content: none; }

.reveal table {
  margin: 0 0 0.5em 0;
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
  font-size: 1em;
}

.reveal table th {
  font-weight: 600;
  text-align: left;
  padding: 0.4em 0.8em;
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--accent);
  border-top: 1px solid rgba(0,0,0,0.1);
  vertical-align: bottom;
}

.reveal table td {
  text-align: left;
  padding: 0.35em 0.8em;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  border-top: 1px solid rgba(0,0,0,0.04);
  vertical-align: top;
}

.reveal table tr:first-child td,
.reveal table tr:first-child th { border-top: none; }
.reveal table tr:last-child td { border-bottom: none; }
.reveal table tbody tr:hover td { background: rgba(0,0,0,0.02); }
.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 font[size="1"] { font-size: 0.8em; }
.reveal table font[size="2"] { font-size: 1em; }
.reveal table font[size="3"] { font-size: 1.2em; }
.reveal table table { margin: 0; font-size: 1em; }

.reveal figure {
  margin: 0 0 0.5em 0;
  display: inline-block;
  max-width: 98%;
}

.reveal img, .reveal video, .reveal iframe {
  max-width: 100%;
  max-height: 75vh;
  width: auto;
  height: auto;
  display: block;
}

.reveal section img {
  background: transparent;
  border: none;
  box-shadow: none;
  border-radius: 4px;
}

.reveal figcaption {
  font-size: 0.8em;
  color: var(--text-muted);
  margin-top: 0.3em;
}

.reveal a { color: var(--accent); text-decoration: none; transition: color 0.2s ease; }
.reveal a:hover { color: var(--accent-hover); text-shadow: none; }

.reveal .controls .navigate-left,
.reveal .controls .navigate-left.enabled { border-right-color: var(--accent); }
.reveal .controls .navigate-right,
.reveal .controls .navigate-right.enabled { border-left-color: var(--accent); }
.reveal .controls .navigate-up,
.reveal .controls .navigate-up.enabled { border-bottom-color: var(--accent); }
.reveal .controls .navigate-down,
.reveal .controls .navigate-down.enabled { border-top-color: var(--accent); }
.reveal .controls .navigate-left.enabled:hover { border-right-color: var(--accent-hover); }
.reveal .controls .navigate-right.enabled:hover { border-left-color: var(--accent-hover); }
.reveal .controls .navigate-up.enabled:hover { border-bottom-color: var(--accent-hover); }
.reveal .controls .navigate-down.enabled:hover { border-top-color: var(--accent-hover); }

.reveal .progress { background: rgba(0,0,0,0.1); height: 4px; }
.reveal .progress span { background: var(--accent); }

.reveal ::selection { background: var(--accent); color: white; }

.reveal .columns { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5em; text-align: left; }

.reveal .callout {
  background: var(--bg-secondary);
  border-left: 4px solid var(--accent);
  padding: 0.5em 0.8em;
  margin: 0 0 0.5em 0;
  border-radius: 0 4px 4px 0;
}

.reveal .callout-title { font-size: 0.8em; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); margin-bottom: 0.3em; }
.reveal .tag { display: inline-block; font-size: 0.7em; font-weight: 600; padding: 0.2em 0.6em; background: var(--accent); color: white; border-radius: 4px; text-transform: uppercase; letter-spacing: 0.05em; vertical-align: middle; }
.reveal small { font-size: var(--small-size); line-height: 1.4; vertical-align: top; background: transparent; }