:root {
  --paper: #f5f1e8;
  --ink: #1c1b18;
  --muted: #5f5b50;
  --rule: #d8d2c2;
  --tint: #ece6d6;
  --accent: #b0361a;
  --accent-ink: #9b2e15;
  --ok: #2f6b3a;
  --mid: #86670f;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #161512;
    --ink: #ebe7dc;
    --muted: #a39e90;
    --rule: #38352d;
    --tint: #211f1a;
    --accent: #ee7253;
    --accent-ink: #f59a80;
    --ok: #86c791;
    --mid: #dbb957;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 1rem; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.0625rem, 1rem + 0.25vw, 1.175rem);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  hyphens: auto;
}
.wrap { max-width: 70rem; margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }

a { color: var(--accent-ink); text-underline-offset: 0.22em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--paper); padding: 0.5rem 1rem; z-index: 10; font-family: var(--sans); }
.skip:focus { left: 0; }

/* Mast */
.mast { border-bottom: 1px solid var(--ink); }
.mast .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 2rem; padding-block: 0.9rem; }
.brand { display: inline-flex; align-items: center; gap: 0.55rem; font-weight: 700; font-size: 1.3rem; letter-spacing: -0.01em; color: var(--ink); text-decoration: none; }
.brand svg { width: 1.7rem; height: 1.7rem; flex: none; }
.brand small { font: 400 0.75em var(--mono); color: var(--muted); margin-left: -0.35rem; }
.nav { display: flex; flex-wrap: wrap; gap: 0.1rem 1.3rem; margin-left: auto; font: 500 0.9rem var(--sans); }
.nav a { color: var(--ink); text-decoration: none; padding: 0.3rem 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--accent); }

/* Page head */
.crumbs { font: 0.8rem var(--sans); color: var(--muted); padding-top: 1.25rem; }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.crumbs li + li::before { content: "/"; margin-right: 0.4rem; }
.crumbs a { color: var(--muted); }
.pagehead { padding-block: clamp(1.5rem, 5vw, 3.5rem) 1rem; }
.kicker { font: 500 0.76rem var(--mono); text-transform: uppercase; letter-spacing: 0.09em; color: var(--accent-ink); margin: 0 0 1rem; }
h1, h2, h3 { font-weight: 650; line-height: 1.15; letter-spacing: -0.012em; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 1.35rem + 3.3vw, 3.7rem); margin: 0; max-width: 20ch; }
.hero h1 { max-width: 17ch; }
.lede { font-size: 1.22em; line-height: 1.5; margin: 1.4rem 0 0; max-width: 36rem; }
.meta { font: 0.8rem var(--sans); color: var(--muted); margin-top: 1.5rem; }

/* Prose */
.prose { max-width: 40rem; padding-bottom: 2rem; }
.prose h2 { font-size: 1.65rem; margin: 3.2rem 0 0.8rem; padding-top: 1.4rem; border-top: 1px solid var(--rule); }
.prose h2:first-child { margin-top: 1.5rem; }
.prose h3 { font-size: 1.15rem; margin: 2rem 0 0.4rem; }
.prose p, .prose ul, .prose ol, .prose dl { margin: 0 0 1.1rem; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: 0.4rem; }
.prose li::marker { color: var(--accent); }
.wide { max-width: 52rem; }
.note { border-left: 3px solid var(--accent); padding: 0.2rem 0 0.2rem 1.1rem; margin: 1.6rem 0; font-style: italic; }
.note p { margin: 0; }
code, kbd { font: 0.88em var(--mono); background: var(--tint); padding: 0.08em 0.3em; border-radius: 2px; }

/* Home hero */
.hero { display: grid; gap: 2.5rem; padding-block: clamp(2rem, 6vw, 4.5rem) clamp(1.5rem, 4vw, 3rem); }
@media (min-width: 62rem) { .hero { grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: 4rem; align-items: end; } }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1.5rem; margin-top: 1.8rem; font: 500 0.95rem var(--sans); }
.btn { display: inline-block; background: var(--ink); color: var(--paper); text-decoration: none; padding: 0.7rem 1.1rem; border-radius: 2px; }
.btn:hover { background: var(--accent-ink); color: #fff; }
.facts { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.facts li { display: grid; grid-template-columns: 4.2rem 1fr; gap: 1rem; padding: 0.95rem 0; border-bottom: 1px solid var(--rule); font-size: 0.93rem; line-height: 1.45; }
.facts b { font: 650 1.55rem/1 var(--serif); color: var(--accent-ink); font-variant-numeric: tabular-nums; }
.facts + p { font: 0.78rem var(--sans); color: var(--muted); margin: 0.7rem 0 0; }

/* Steps */
ol.steps { list-style: none; padding: 0; counter-reset: s; border-bottom: 1px solid var(--rule); }
ol.steps > li { counter-increment: s; position: relative; padding: 1.3rem 0 0.8rem 3.4rem; margin: 0; border-top: 1px solid var(--rule); }
ol.steps > li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: 1.5rem; font: 500 0.95rem var(--mono); color: var(--accent-ink); }
ol.steps h3 { margin: 0 0 0.35rem; font-size: 1.2rem; }

/* Tables */
.scroll { overflow-x: auto; margin: 1.5rem 0 2rem; }
table { border-collapse: collapse; width: 100%; font: 0.93rem/1.45 var(--sans); }
caption { text-align: left; font: 500 0.76rem var(--mono); text-transform: uppercase; letter-spacing: 0.07em; color: var(--muted); padding-bottom: 0.7rem; }
th, td { text-align: left; vertical-align: top; padding: 0.7rem 1.1rem 0.7rem 0; border-bottom: 1px solid var(--rule); }
thead th { border-bottom: 2px solid var(--ink); font-weight: 650; font-size: 0.82rem; }
tbody th { font-weight: 600; }
td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.tag { display: inline-block; font: 600 0.72rem var(--mono); padding: 0.1rem 0.4rem; border: 1px solid currentColor; border-radius: 2px; white-space: nowrap; }
.tag.bad { color: var(--accent-ink); }
.tag.ok { color: var(--ok); }
.tag.mid { color: var(--mid); }

/* Glossary / dl */
dl.gloss dt { font: 650 1.05rem var(--serif); margin-top: 1.6rem; padding-top: 1.1rem; border-top: 1px solid var(--rule); }
dl.gloss dd { margin: 0.2rem 0 0; }

/* Calculator */
.calc { border: 1px solid var(--ink); padding: 1.2rem 1.3rem; margin: 1.6rem 0; font-family: var(--sans); background: var(--tint); }
.calc label { display: grid; grid-template-columns: 1fr 5rem; gap: 1rem; align-items: center; font-size: 0.92rem; margin-bottom: 0.8rem; }
.calc input { font: 600 1rem var(--mono); width: 100%; padding: 0.4rem 0.5rem; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); border-radius: 2px; }
.calc .result { margin: 0.4rem 0 0; padding-top: 0.9rem; border-top: 1px solid var(--rule); font: 600 0.98rem/1.45 var(--sans); }

/* Next link */
.next { max-width: 40rem; margin: 1rem 0 3rem; padding-top: 1.2rem; border-top: 2px solid var(--ink); font-family: var(--sans); }
.next span { display: block; font: 500 0.76rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.next a { font: 650 1.35rem var(--serif); text-decoration: none; }
.next a:hover { text-decoration: underline; }
.linklist { list-style: none; padding: 0 !important; border-top: 2px solid var(--ink); max-width: 40rem; }
.linklist li { margin: 0; padding: 0.9rem 0; border-bottom: 1px solid var(--rule); }
.linklist a { font-weight: 650; }
.linklist span { display: block; font-size: 0.93rem; color: var(--muted); }

/* Footer */
.foot { border-top: 1px solid var(--ink); margin-top: 3rem; padding-block: 2rem 3rem; font: 0.88rem/1.55 var(--sans); color: var(--muted); }
.foot .wrap { display: grid; gap: 1.5rem 3rem; }
@media (min-width: 40rem) { .foot .wrap { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 70rem) { .foot .wrap { grid-template-columns: 1.6fr repeat(4, 1fr); } }
.foot h2 { font: 600 0.76rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 0.5rem; color: var(--ink); }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot a { color: var(--ink); }
.foot p { margin: 0 0 0.5rem; }

@media print {
  .nav, .skip, .next, .foot, .actions, .calc { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
  a { color: #000; }
}

/* Wide prose keeps text measure but lets tables/lists breathe */
.prose.wide > p, .prose.wide > ul, .prose.wide > ol, .prose.wide > .note { max-width: 40rem; }

/* --- v2 additions --- */
.tldr { max-width: 40rem; border-left: 4px solid var(--accent); background: var(--tint); padding: 1rem 1.25rem 1.1rem; margin: 1.5rem 0 0; }
.tldr .kicker { margin: 0 0 0.45rem; }
.tldr p:last-child { margin: 0; }
.toc { max-width: 40rem; margin: 1.5rem 0 0; padding: 1rem 1.25rem; border: 1px solid var(--rule); font: 0.92rem/1.5 var(--sans); }
.toc .kicker { margin: 0 0 0.5rem; }
.toc ol { margin: 0; padding-left: 1.3rem; }
.toc li { margin: 0.2rem 0; }
.related { max-width: 40rem; margin-top: 2.5rem; }
.related h2 { font-size: 1.4rem; margin: 0 0 0.8rem; }
pre { background: var(--tint); border: 1px solid var(--rule); padding: 0.9rem 1rem; overflow-x: auto; font: 0.85rem/1.55 var(--mono); margin: 0 0 1.2rem; border-radius: 2px; hyphens: none; }
pre code { background: none; padding: 0; font: inherit; }
blockquote.note { margin-inline: 0; }
.prose h3 + p { margin-top: 0; }
@media print { .toc, .related { display: none; } }

/* --- Bevegelse (motion.js legger på klassen .motion; alt er valgfritt) --- */
.mast, main, .foot { position: relative; z-index: 1; }
.mast { transition: background-color .3s, box-shadow .3s; }
.mast.scrolled { box-shadow: 0 6px 18px -12px color-mix(in srgb, var(--ink) 55%, transparent); }

.bg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; color: var(--rule); }
.bg-layer { position: absolute; left: 0; right: 0; top: -20%; height: 140%; will-change: transform; }
.bg-layer svg { width: 100%; height: 100%; display: block; }
.bg-far { opacity: .55; }
.bg-mid { opacity: .5; color: var(--rule); }
.bg-near { opacity: .6; color: var(--muted); }
.bg-near svg { opacity: .55; }
.orbit { animation: spin 90s linear infinite; }
.orbit-b { animation-duration: 140s; animation-direction: reverse; }
.orbit, .qubit { transform-box: fill-box; transform-origin: center; }
.qubit { animation: float 7s ease-in-out infinite, pulse 4.5s ease-in-out infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes float { 50% { translate: 0 -14px; } }
@keyframes pulse { 50% { opacity: .35; } }

.progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 20; background: var(--accent); transform: scaleX(0); transform-origin: 0 50%; pointer-events: none; }

/* Avsløring ved scrolling */
.motion .rv { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1) var(--d, 0ms), transform .7s cubic-bezier(.2,.7,.2,1) var(--d, 0ms); }
.motion .rv-left { transform: translateX(28px); }
.motion .rv-row { transform: translateX(-14px); }
.motion .rv.in { opacity: 1; transform: none; }
/* Tegn opp streken over h2 */
.motion .prose h2.rule-draw { border-top-color: transparent; background: linear-gradient(var(--rule), var(--rule)) 0 0 / 0 1px no-repeat; transition: opacity .7s, transform .7s, background-size 1s cubic-bezier(.2,.7,.2,1) .15s; }
.motion .prose h2.rule-draw.in { background-size: 100% 1px; }

/* Hero: innledende inngang */
.motion .kicker, .motion .hero h1, .motion .pagehead h1, .motion .lede, .motion .actions, .motion .meta { animation: rise .9s cubic-bezier(.2,.7,.2,1) both; }
.motion .hero h1, .motion .pagehead h1 { animation-delay: .08s; }
.motion .lede { animation-delay: .2s; }
.motion .actions, .motion .meta { animation-delay: .32s; }
.motion .prose .kicker, .motion .tldr .kicker, .motion .toc .kicker, .motion aside .kicker { animation: none; }
@keyframes rise { from { opacity: 0; translate: 0 18px; } }

/* Mikrointeraksjoner */
.btn { transition: background-color .2s, transform .2s, box-shadow .2s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 16px -8px color-mix(in srgb, var(--ink) 60%, transparent); }
.btn:active { transform: translateY(0); }
.nav a { transition: border-color .2s, color .2s; }
.brand svg { transition: transform .5s cubic-bezier(.3,1.5,.5,1); }
.brand:hover svg { transform: rotate(-14deg) scale(1.08); }
.linklist li { transition: padding-left .25s; }
.linklist li:hover { padding-left: .6rem; }
.linklist a::after, .next a::after { content: " →"; display: inline-block; opacity: 0; transform: translateX(-6px); transition: opacity .25s, transform .25s; }
.linklist li:hover a::after, .next a:hover::after { opacity: 1; transform: none; }
.facts li { transition: background-color .25s; }
.facts li:hover { background: var(--tint); }
.tag { transition: background-color .2s, color .2s; }
.tag:hover { background: currentColor; }
.tag:hover { color: var(--paper); }
tbody tr { transition: background-color .2s; }
tbody tr:hover { background: var(--tint); }
ol.steps > li::before { transition: transform .3s; }
ol.steps > li:hover::before { transform: translateX(4px); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .bg, .progress { display: none; }
}
@media print { .bg, .progress { display: none; } }