:root {
  color-scheme: light;
  --slide-bg: #fbfaf7;
  --slide-text: #171717;
  --slide-muted: #5d5d5d;
  --slide-accent: #2457a6;
  --slide-border: #dedbd2;
  --slide-code-bg: #f1efe9;
  --slide-shadow: rgba(23, 23, 23, 0.08);
  --slide-surface: #ffffff;
  --slide-focus: #1769c2;
  --slide-button-text: #ffffff;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --slide-bg: #111522;
  --slide-text: #f3f6fc;
  --slide-muted: #b6bed0;
  --slide-accent: #86b7ff;
  --slide-border: #39435a;
  --slide-code-bg: #090d18;
  --slide-shadow: rgba(0, 0, 0, 0.34);
  --slide-surface: #1b2131;
  --slide-focus: #9ac7ff;
  --slide-button-text: #101522;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }

body.presentation-body {
  margin: 0;
  background: var(--slide-bg);
  color: var(--slide-text);
  font-family: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  line-height: 1.45;
}

.presentation-shell { min-height: 100vh; display: grid; grid-template-rows: auto 1fr auto; }
.presentation-topbar, .presentation-footer {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem 1.4rem; color: var(--slide-muted); font-size: .95rem;
}
.presentation-topbar a { color: var(--slide-accent); text-decoration: none; font-weight: 700; }
.slide-counter { font-variant-numeric: tabular-nums; }
.deck { position: relative; min-height: 0; }
.slide { display: none; min-height: calc(100vh - 7.2rem); padding: clamp(2rem, 5vw, 5rem); place-items: center; }
.slide.is-active { display: grid; }
.slide-content { width: min(1120px, 100%); }
.slide-kicker { margin: 0 0 1rem; color: var(--slide-accent); font-size: clamp(1rem, 1.8vw, 1.35rem); font-weight: 800; }
.slide h1, .slide h2 { margin: 0; max-width: 17ch; font-weight: 850; line-height: 1.04; }
.slide h1 { font-size: clamp(3rem, 7vw, 6.4rem); }
.slide h2 { font-size: clamp(2.4rem, 5.4vw, 5rem); }
.slide p, .slide li { max-width: 64ch; font-size: clamp(1.45rem, 2.25vw, 2.2rem); }
.slide p { margin: 1.4rem 0 0; }
.slide ul, .slide ol { display: grid; gap: 1rem; margin: 1.8rem 0 0; padding-left: 1.4em; }
.fragment { opacity: 0; transform: translateY(10px); transition: opacity 180ms ease, transform 180ms ease; }
.fragment.is-visible { opacity: 1; transform: translateY(0); }
.fragment.is-dimmed { color: var(--slide-muted); }
.code-block {
  display: block; width: min(900px, 100%); margin: 2rem 0 0; padding: 1.4rem;
  border: 1px solid var(--slide-border); border-radius: 10px; background: var(--slide-code-bg);
  color: var(--slide-text); font: clamp(1.25rem, 2vw, 1.95rem)/1.35 "SFMono-Regular", Consolas, monospace;
  overflow-x: auto; box-shadow: 0 14px 34px var(--slide-shadow);
}
.code-block.compact-code { font-size: clamp(1rem, 1.5vw, 1.45rem); }
.code-step { margin-top: 1.2rem; }
.code-step .code-block { margin-top: 0; }
.code-step p { margin-top: .75rem; font-size: clamp(1.1rem, 1.7vw, 1.55rem); color: var(--slide-muted); }
.two-column { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 4rem); align-items: start; }
.pros-cons { margin-top: 1.5rem; }
.pros-cons h3 { margin: 0; font-size: clamp(1.45rem, 2.5vw, 2.2rem); }
.pros-cons ul { margin-top: .8rem; gap: .55rem; }
.pros-cons li { font-size: clamp(1rem, 1.45vw, 1.35rem); line-height: 1.3; }
.two-column.diagram-emphasis { grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); align-items: center; }
.diagram-emphasis .slide-figure img { width: 100%; max-height: 62vh; object-fit: contain; }
.prompt-card { margin-top: 2rem; padding: 1.4rem; border: 1px solid var(--slide-border); border-radius: 12px; background: var(--slide-surface); }
.prompt-card p { margin-top: .6rem; font-size: clamp(1.1rem, 1.7vw, 1.35rem); }
.presentation-index-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.presentation-index-card { margin-top: 0; padding: 1rem 1.15rem; }
.presentation-index-card h2 { font-size: clamp(1.35rem, 2vw, 1.8rem); }
.presentation-index-card p { margin-top: .4rem; font-size: clamp(1rem, 1.35vw, 1.15rem); }
.presentation-index-card a { color: var(--slide-accent); font-weight: 700; }
.slide-figure { margin: 1.5rem 0 0; }
.slide-figure img { display: block; max-width: 100%; max-height: 48vh; border: 1px solid var(--slide-border); border-radius: 10px; box-shadow: 0 14px 34px var(--slide-shadow); }
.slide-figure figcaption { margin-top: .55rem; color: var(--slide-muted); font-size: clamp(.9rem, 1.3vw, 1.15rem); }
.comparison { width: 100%; margin-top: 2rem; border-collapse: collapse; background: var(--slide-surface); font-size: clamp(1rem, 1.6vw, 1.45rem); }
.comparison th, .comparison td { padding: 1rem; border: 1px solid var(--slide-border); text-align: left; vertical-align: top; }
.comparison th { color: var(--slide-accent); }
.flow { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem; margin-top: 2rem; }
.flow span { padding: .8rem 1rem; border: 2px solid var(--slide-text); border-radius: 10px; background: var(--slide-surface); font-size: clamp(1rem, 1.5vw, 1.35rem); font-weight: 800; }
.flow b { color: var(--slide-accent); font-size: 1.8rem; }
.decision-simulator { display: grid; grid-template-columns: minmax(15rem, .8fr) minmax(0, 1.2fr); gap: 1.5rem; margin-top: 1.5rem; align-items: start; }
.decision-controls, .decision-output { display: grid; gap: .8rem; padding: 1.2rem; border: 1px solid var(--slide-border); border-radius: 10px; background: var(--slide-surface); }
.decision-controls label { font-size: 1.15rem; font-weight: 700; }
.decision-controls input { width: 100%; padding: .7rem; border: 1px solid var(--slide-border); border-radius: 6px; font: inherit; font-size: 1.1rem; }
.decision-controls button { padding: .7rem 1rem; border: 0; border-radius: 6px; background: var(--slide-accent); color: var(--slide-button-text); font: inherit; font-weight: 800; cursor: pointer; }
.decision-output pre { min-height: 5rem; margin: 0; white-space: pre-wrap; font: 1.1rem/1.5 "SFMono-Regular", Consolas, monospace; }

.theme-toggle {
  display: inline-grid; place-items: center; width: 2.75rem; height: 2.75rem;
  margin-left: auto; border: 1px solid var(--slide-border); border-radius: 999px;
  background: var(--slide-surface); color: var(--slide-text); font-size: 1.05rem; cursor: pointer;
}
.theme-toggle:hover { border-color: var(--slide-accent); }
:where(a, button, input, [tabindex]):focus-visible { outline: 3px solid var(--slide-focus); outline-offset: 3px; }

@media (max-width: 760px) {
  .two-column { grid-template-columns: 1fr; }
  .two-column.diagram-emphasis { grid-template-columns: 1fr; }
  .decision-simulator { grid-template-columns: 1fr; }
  .presentation-topbar, .presentation-footer { align-items: flex-start; flex-direction: column; }
  .slide { min-height: calc(100vh - 9rem); padding: 1.5rem; }
  .slide p, .slide li { font-size: clamp(1.15rem, 4.3vw, 1.65rem); }
}

/* Nedtonad text, samma stegvisa princip som kursreferensen. */
:root { --slide-text: #55585c; --slide-muted: #85888c; --slide-accent: #626c78; }
.slide h2 {font-weight:700;font-size:clamp(2.4rem,4.8vw,4.5rem);max-width:23ch;}
.slide p,.slide li {font-size:clamp(1.3rem,2vw,1.9rem);}
.slide {padding:clamp(1.5rem,4vw,3.5rem);}
.slide blockquote {margin:2rem 0 0;max-width:38ch;font-size:clamp(1.6rem,3vw,2.6rem);line-height:1.45;}
.slide-figure img {max-height:55vh;width:auto;max-width:100%;object-fit:contain;border-radius:0;box-shadow:none;cursor:zoom-in;}
a {color:var(--slide-accent);}
.presentation-footer {gap:.75rem;flex-wrap:wrap;}
button {font:inherit;color:var(--slide-text);background:transparent;border:1px solid var(--slide-border);padding:.5rem .85rem;border-radius:5px;cursor:pointer;}
#notes {margin:0 1.5rem 1rem;padding:1rem;background:#f0eee8;white-space:pre-wrap;line-height:1.6;}
.slide .slide-kicker {font-size:1.15rem;}
@media print {.slide{display:block!important;break-after:page;min-height:0;padding:2rem}.fragment{opacity:1!important;transform:none!important;color:#555!important}.presentation-topbar,.presentation-footer,#notes{display:none!important}}
@media(prefers-reduced-motion:reduce){.fragment{transition:none;transform:none}}

.calendar-layout {display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:center;}
.calendar-layout .calendar-figure img {max-height:68vh;width:auto;max-width:100%;}
.calendar-layout .calendar-figure {margin-top:1rem;}
@media(max-width:760px){.calendar-layout{grid-template-columns:1fr;}.calendar-layout .calendar-figure img{max-height:65vh;}}

.slide-figure.material-example img {max-height:68vh;width:auto;max-width:100%;object-fit:contain;}

/* Tidigare visade punkter tonas ned ytterligare. */
.fragment.is-dimmed { color: #a0a2a5; }

.tkinter-simulator {
  display: grid;
  grid-template-columns: minmax(17rem, 24rem) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
  margin-top: 1.5rem;
}
.tkinter-window {
  overflow: hidden;
  border: 1px solid #8c8c8c;
  border-radius: 6px;
  background: #ececec;
  color: #111;
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.22);
  font-family: Arial, Helvetica, sans-serif;
}
.tkinter-titlebar {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  padding: .45rem .6rem;
  border-bottom: 1px solid #a9a9a9;
  background: #d8d8d8;
  color: #111;
  font-size: .9rem;
}
.tkinter-window-controls { color: #444; white-space: nowrap; }
.tkinter-window-body { display: grid; gap: .7rem; padding: 1rem; }
.tkinter-widget-label,
.tkinter-result-label { margin: 0; color: #111; font-size: 1rem; }
.tkinter-result-label { min-height: 1.5rem; }
.tkinter-entry {
  width: 100%;
  min-height: 2.2rem;
  padding: .3rem .45rem;
  border: 2px inset #f7f7f7;
  border-radius: 0;
  background: #fff;
  color: #111;
  font: 1rem/1.4 Arial, Helvetica, sans-serif;
}
.tkinter-button {
  justify-self: start;
  min-height: 2.2rem;
  padding: .35rem .85rem;
  border: 2px outset #f3f3f3;
  border-radius: 0;
  background: #e5e5e5;
  color: #111;
  font: 1rem/1.3 Arial, Helvetica, sans-serif;
}
.tkinter-button:active { border-style: inset; background: #d8d8d8; }
.tkinter-code-panel h3 { margin: 0 0 .5rem; font-size: 1.2rem; }
.tkinter-trace {
  display: block;
  min-height: 15rem;
  max-height: 40vh;
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--slide-border);
  border-radius: 8px;
  background: var(--slide-code-bg);
  color: var(--slide-text);
  white-space: pre-wrap;
  font: .92rem/1.4 "SFMono-Regular", Consolas, monospace;
}
.tkinter-reset { margin-top: .75rem; }
@media (max-width: 760px) {
  .tkinter-simulator { grid-template-columns: 1fr; }
  .tkinter-trace { min-height: 10rem; max-height: 28vh; }
}

.color-demo-panel {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--slide-border);
  border-radius: 8px;
  background: var(--slide-surface);
}
.color-demo-preview {
  min-height: 7rem;
  display: grid;
  place-items: center;
  padding: 1rem;
  border-radius: 8px;
  background: rgb(64 160 220);
  text-align: center;
  font-weight: 800;
}
.color-demo-preview-values {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .5rem 1rem;
  padding: .65rem .9rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, .78);
  color: #111;
  font: .95rem/1.35 "SFMono-Regular", Consolas, monospace;
}
.color-demo-sections {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: .8rem;
}
.color-demo-sections h3 { margin: 0 0 .45rem; font-size: 1.15rem; }
.color-demo-controls { display: grid; gap: .5rem; }
.color-demo-control label {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .15rem;
  font-size: .95rem;
  font-weight: 700;
}
.color-demo-control input[type="range"] { width: 100%; }
.color-demo-hsl {
  grid-template-columns: minmax(7rem, .7fr) minmax(8rem, 1fr);
  align-items: center;
}
.hue-wheel-control { grid-row: span 2; }
.hue-wheel {
  position: relative;
  width: min(8rem, 100%);
  aspect-ratio: 1;
  border: 2px solid var(--slide-border);
  border-radius: 50%;
  background: conic-gradient(hsl(0 100% 50%), hsl(60 100% 50%), hsl(120 100% 50%), hsl(180 100% 50%), hsl(240 100% 50%), hsl(300 100% 50%), hsl(360 100% 50%));
  cursor: pointer;
  touch-action: none;
}
.hue-wheel::after {
  content: "";
  position: absolute;
  inset: 25%;
  border: 1px solid var(--slide-border);
  border-radius: 50%;
  background: var(--slide-surface);
}
.hue-wheel-marker {
  position: absolute;
  z-index: 1;
  width: .85rem;
  height: .85rem;
  border: 3px solid #fff;
  border-radius: 50%;
  background: hsl(201 100% 50%);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, .45);
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.color-demo-code {
  margin: .75rem 0 0;
  padding: .65rem .8rem;
  border-radius: 7px;
  background: var(--slide-code-bg);
  color: var(--slide-text);
  font: .9rem/1.35 "SFMono-Regular", Consolas, monospace;
  white-space: pre-wrap;
}
@media (max-width: 760px) {
  .color-demo-sections { grid-template-columns: 1fr; }
  .color-demo-preview { min-height: 5rem; }
}

.image-lightbox[hidden] { display: none; }
.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 3.5rem;
  background: rgba(20, 22, 25, 0.82);
}
.image-lightbox img {
  display: block;
  max-width: 94vw;
  max-height: 90vh;
  object-fit: contain;
  background: var(--slide-bg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.image-lightbox-close {
  position: fixed;
  top: 1rem;
  right: 1.25rem;
  width: 3rem;
  height: 3rem;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 50%;
  color: #fff;
  background: rgba(0, 0, 0, 0.35);
  font-size: 2rem;
  line-height: 1;
}

/* Keep the original interactive OECD chart readable within the slide. */
.oecd-slide { padding: 1rem clamp(1rem, 4vw, 4rem); }
.oecd-slide .slide-content { width: min(1280px, 100%); }
.oecd-slide .slide-kicker { margin: 0 0 .5rem; font-size: 1rem; }
.oecd-slide h2 { max-width: none; font-size: clamp(1.6rem, 3vw, 2.6rem); }
.oecd-chart { display: block; width: 100%; height: max(540px, calc(100vh - 290px)); margin-top: 1rem; border: 0; background: white; color-scheme: light; }
.oecd-slide .oecd-chart-help, .oecd-slide .oecd-chart-source { max-width: none; margin-top: .5rem; font-size: clamp(.85rem, 1.2vw, 1.05rem); }
.oecd-chart-source a { color: var(--slide-accent); }

.oecd-chart-container { position: relative; margin: 1rem auto 0; }
.oecd-chart { position: absolute; top: 0; left: 0; width: 1000px; height: 700px; margin: 0; transform-origin: top left; }

.oecd-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 2rem; align-items: center; margin-top: 1rem; }
.oecd-chart-column { min-width: 0; }
.oecd-layout .oecd-chart-container { margin-top: 0; }
.oecd-slide .oecd-summary p, .oecd-slide .oecd-summary li { font-size: clamp(1rem, 1.35vw, 1.3rem); line-height: 1.4; }
.oecd-slide .oecd-summary p { margin-top: 0; }
.oecd-slide .oecd-summary ul { margin: 1rem 0; gap: .8rem; }
.oecd-slide .oecd-summary .oecd-caveat { font-size: .95rem; color: var(--slide-muted); }
@media (max-width: 850px) {
  .oecd-layout { grid-template-columns: 1fr; }
}