:root {
  --cream: #fbf5e6;
  --paper: #fffaf0;
  --ink: #2a2014;
  --muted: #6d5d47;
  --honey: #e3a21a;
  --honey-dark: #a86d00;
  --dark: #1d160c;
  --line: #ead9b4;
  --en: #2f6db5;
  --de: #b5422f;
  --nl: #c76a00;
}

html, body { background: var(--dark); }
.reveal { font-family: Inter, system-ui, sans-serif; font-size: 25px; color: var(--ink); }
.reveal .slides { text-align: left; }
.reveal .slides > section {
  height: 720px; width: 1280px; padding: 0; box-sizing: border-box;
  background: var(--cream);
}
.reveal .slides > section.section-slide { background: transparent; }

.reveal h1, .reveal h2, .reveal h3 {
  font-family: Fraunces, Georgia, serif; color: var(--ink);
  text-transform: none; letter-spacing: -0.01em; margin: 0 0 .4em; line-height: 1.08;
  text-wrap: balance;
}
.reveal h1 { font-size: 82px; }
.reveal h2 { font-size: 50px; }
.reveal h3 { font-size: 28px; }
.reveal p { margin: 0 0 .55em; line-height: 1.4; }
.reveal ul { margin: 0; padding-left: 1.05em; display: block; }
.reveal li { margin: 0 0 .42em; line-height: 1.35; }
.reveal li::marker { color: var(--honey); }
.reveal strong { color: var(--honey-dark); font-weight: 600; }
.reveal a { color: inherit; text-decoration: underline; text-decoration-color: var(--honey); text-underline-offset: 2px; }
.reveal .small { font-size: 17px; color: var(--muted); }
.reveal .center { text-align: center; }
.reveal .latin { font-style: italic; color: var(--muted); margin-top: -.5em; font-size: 22px; }
.reveal .kicker { text-transform: uppercase; letter-spacing: .15em; font-size: 16px; color: var(--honey); font-weight: 600; }
.reveal .authors { margin-top: 1.4em; font-size: 21px; font-weight: 500; color: var(--honey); letter-spacing: .02em; }
.reveal .lead { font-size: 30px; color: var(--muted); }

/* split: foto links, tekst rechts */
.reveal section.split > figure { position: absolute; left: 0; top: 0; margin: 0; width: 44%; height: 720px; background: #3a2c18 center/cover no-repeat; }
.reveal section.split > .txt { position: absolute; left: 44%; right: 0; top: 0; bottom: 0; padding: 40px 56px 64px 52px; overflow: hidden; display: flex; flex-direction: column; justify-content: center; font-size: 23px; box-sizing: border-box; }
.reveal section.split.dark { background: var(--dark); }
.reveal section.split.dark .txt, .reveal section.split.dark h1 { color: var(--paper); }
.reveal section.split.dark .lead, .reveal section.split.dark .small { color: #d8c7a6; }

/* gewone slide */
.reveal section.plain { padding: 44px 64px 74px; }
.reveal section.plain > h2 { margin-bottom: .45em; }

.cols2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-bottom: 18px; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 22px 26px; font-size: 22px; }
.card h3 { margin-bottom: .35em; }
.versus .card { text-align: center; }
.card.sun { background: #fff4d6; }
.card.snow { background: #eef3f8; border-color: #d3dfeb; }

.bignum { font-family: Fraunces, Georgia, serif; font-size: 84px; font-weight: 700; color: var(--honey-dark); line-height: 1; margin: .1em 0 .2em; }
.bignum span { display: block; font-family: Inter, sans-serif; font-size: 20px; font-weight: 500; color: var(--muted); margin-top: 6px; }
.split .bignum { font-size: 72px; }

.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 20px; }
.tile figure { margin: 0 0 10px; height: 330px; border-radius: 16px; background: #3a2c18 center/cover no-repeat; }
.tile h3 { margin: 0 0 .1em; font-size: 26px; }
.tile h3 small { font-family: Inter, sans-serif; font-size: 18px; color: var(--muted); font-weight: 400; }
.tile p { color: var(--muted); font-size: 20px; }

.cols-img { display: grid; grid-template-columns: 46% 1fr; gap: 36px; align-items: start; font-size: 22px; }
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.duo > div { position: relative; }
.duo figure { margin: 0; height: 470px; border-radius: 16px; background: #3a2c18 center/cover no-repeat; }
.duo .cap { position: absolute; left: 10px; bottom: 10px; background: rgba(29,22,12,.75); color: #fff; font-size: 15px; padding: 3px 9px; border-radius: 8px; }

.timeline { display: grid; gap: 6px; margin: 0 0 18px; }
.timeline > div { background: var(--paper); border-left: 5px solid var(--honey); border-radius: 0 10px 10px 0; padding: 6px 14px; font-size: 20px; }
.timeline b { display: inline-block; min-width: 118px; color: var(--honey-dark); }

.dance { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 18px; }
.dance > div { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; font-size: 17px; line-height: 1.3; }
.dance b { display: block; font-size: 20px; color: var(--honey-dark); }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.steps > div { background: var(--paper); border-top: 5px solid var(--honey); border-radius: 0 0 12px 12px; padding: 12px 14px; font-size: 19px; line-height: 1.35; }
.steps b { display: block; font-family: Fraunces, serif; font-size: 24px; margin-bottom: 4px; }

.compare { display: grid; grid-template-columns: 250px 1fr 250px; gap: 26px; align-items: center; }
.compare .tile figure { height: 400px; margin: 0; }
.compare table { border-collapse: collapse; width: 100%; font-size: 21px; }
.compare th, .compare td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare th { font-family: Fraunces, serif; font-size: 22px; }
.compare td:first-child { color: var(--muted); font-size: 18px; }

/* sectieslide */
.reveal section.section-slide { text-align: center; padding-top: 250px; }
.reveal section.section-slide h2 { color: #fff; font-size: 88px; text-shadow: 0 2px 30px rgba(0,0,0,.5); }
.reveal section.section-slide p { color: #f5e6c4; font-size: 32px; text-shadow: 0 2px 16px rgba(0,0,0,.6); }
.reveal section.section-slide footer.bron { background: rgba(29,22,12,.7); color: #eadcbc; }
.reveal section.section-slide footer.bron b { color: #fff; }

/* bronregel onder elke slide */
footer.bron {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 5;
  padding: 7px 64px 8px 18px; font-size: 13.5px; line-height: 1.35; text-align: left;
  background: rgba(255, 250, 240, .93); color: var(--muted); border-top: 1px solid var(--line);
}
footer.bron:empty { display: none; }
footer.bron b { color: var(--ink); font-weight: 600; }
footer.bron .sep { margin: 0 10px; color: var(--line); }
.split.dark footer.bron { background: rgba(29,22,12,.85); color: #cbb994; border-top-color: #3a2c18; }
.split.dark footer.bron b { color: #fff; }

.src { display: inline-block; font-size: .72em; font-weight: 700; color: #fff; border-radius: 4px; padding: 0 4px; margin-right: 4px; vertical-align: .12em; line-height: 1.5; letter-spacing: .03em; }
.src.nl { background: var(--nl); }
.src.en { background: var(--en); }
.src.de { background: var(--de); }
.src.fr { background: #5b4bb5; }
.src.es { background: #b58a00; }
.src.ja { background: #a8326e; }
.src.ca { background: #2f8f6b; }
.src.ko { background: #2f8f6b; }
.src.lit { background: #3d3d3d; }
.cc0 { font-size: .8em; font-weight: 700; border: 1px solid currentColor; border-radius: 4px; padding: 0 3px; }

/* bronnenslides */
.reveal section.sources { padding-top: 34px; }
.reveal section.sources h2 { font-size: 42px; margin-bottom: .2em; }
.srclist { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 14px 24px; font-size: 15px; }
.srclist > div:first-child { grid-row: span 3; }
.srclist h4 { font-family: Inter, sans-serif; font-size: 16px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 6px; }
.srclist ul { list-style: none; padding: 0; }
.srclist li { margin: 0 0 4px; }
.srclist .rev { color: var(--muted); font-size: 13px; }
.srclist.photos { display: block; }
.srclist.photos ul { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px 18px; }
.srclist.photos li { display: flex; gap: 9px; align-items: center; font-size: 13px; line-height: 1.25; margin: 0; }
.srclist.photos .thumb { flex: 0 0 38px; height: 38px; border-radius: 6px; background: center/cover; }
.srclist.photos small { color: var(--muted); font-size: 11.5px; }

.reveal .controls { color: var(--honey); }
.reveal .progress { color: var(--honey); }
.reveal .slide-number { background: transparent; color: var(--muted); font-size: 13px; bottom: 9px; right: 12px; z-index: 6; }

blockquote.quote { margin: 0 0 16px; padding: 10px 16px; border-left: 4px solid var(--honey); background: var(--paper); font-family: Fraunces, Georgia, serif; font-style: italic; font-size: 22px; line-height: 1.3; border-radius: 0 10px 10px 0; width: auto; box-shadow: none; }
blockquote.quote cite { display: block; margin-top: 6px; font-family: Inter, sans-serif; font-style: normal; font-size: 14px; color: var(--muted); }
.angles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 6px 0 18px; }
.angles .card { text-align: center; padding: 14px 16px; }
.angles .card b { color: var(--muted); font-size: 16px; text-transform: uppercase; letter-spacing: .08em; }
.angles .bignum { font-size: 60px; }
.angles .bignum.wrong { color: #b5422f; }
.angles .bignum.wrong s { text-decoration-thickness: 3px; }

.reveal .meta { margin-top: 1em; font-size: 15px; line-height: 1.5; color: #cbb994; }
.reveal .meta a { color: #f5e6c4; }
.cols3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 16px; }
.cols3 .card { font-size: 20px; }
.enemies { display: grid; grid-template-columns: 300px 1fr 1fr; gap: 18px; align-items: start; }
.enemies .duo { grid-template-columns: 1fr; }
.enemies .duo figure { height: 228px; }
.enemies .card { font-size: 17px; padding: 16px 18px; }
.enemies .card h3 { font-size: 22px; }
.enemies li { margin-bottom: .3em; }
.research { grid-template-columns: repeat(2, 1fr); gap: 16px; }
.research .card { font-size: 18px; padding: 16px 18px; }
.research .card h3 { font-size: 21px; }
.reveal section.plain .cols2 .card ul { font-size: 18px; }
.srclist.lits { display: block; }
.srclist.lits ul { columns: 2; column-gap: 28px; font-size: 14px; }
.srclist.lits li { break-inside: avoid; margin-bottom: 5px; }

.reveal section.dense { padding-top: 32px; }
.reveal section.dense h2 { font-size: 42px; margin-bottom: .25em; }
.reveal section.dense .lead { font-size: 21px; margin-bottom: .4em; }
.reveal section.dense .card { padding: 12px 18px; }
.reveal section.dense .card h3 { font-size: 21px; margin-bottom: .2em; }
.reveal section.dense .card ul, .reveal section.dense > ul { font-size: 16px; }
.reveal section.dense li { margin-bottom: .25em; }
.reveal section.dense p.center { font-size: 18px; margin-bottom: .3em; }
.reveal section.dense .cols2 { margin-bottom: 10px; gap: 20px; }
.reveal section.dense .angles { margin-bottom: 10px; }
.reveal section.dense .angles .bignum { font-size: 50px; }
.reveal section.dense .angles .card b { font-size: 14px; }