/* Layout and palette inspired by Pauliskolans prog1-python, adapted for VR. */
:root{color-scheme:light;--bg:#f5f7fc;--bg-end:#e8edf7;--surface:#fff;--surface-2:#f1f4f8;--text:#182033;--muted:#536078;--accent:#147a4b;--warm:#8a5b00;--border:rgba(41,57,84,.22);--code:#eef2f8;--shadow:0 18px 48px rgba(27,39,63,.10);--focus:#1769c2}
html[data-theme=dark]{color-scheme:dark;--bg:#101526;--bg-end:#151b30;--surface:#1b233a;--surface-2:#242e46;--text:#f4f7fb;--muted:#bbc5db;--accent:#8bdfaa;--warm:#f6c453;--border:rgba(185,199,223,.25);--code:#0c1221;--shadow:0 18px 48px #0003;--focus:#9ac7ff}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;color:var(--text);font:18px/1.7 Georgia,'Times New Roman',serif;background:radial-gradient(circle at top left,#7bd38917,transparent 32%),radial-gradient(circle at top right,#f6c45315,transparent 28%),linear-gradient(var(--bg),var(--bg-end));min-height:100vh}h1,h2,h3,h4,button,.logo,.eyebrow,.metadata,.breadcrumb,.workflow,.fine,.muted,.code-toolbar,summary,.chapter-number,.page-nav small,.filter-label{font-family:'Trebuchet MS','Segoe UI',sans-serif}h1,h2,h3{line-height:1.18;letter-spacing:-.025em}h1{font-size:clamp(2.3rem,4.5vw,3.65rem);margin:.4rem 0 1rem}h2{font-size:1.65rem;margin:0 0 1rem}h3{font-size:1.25rem;margin:1.8rem 0 .7rem}p{margin:0 0 1rem}a{color:var(--accent);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}button,input{font:inherit}button{cursor:pointer}button,a,input,summary{touch-action:manipulation}:focus-visible{outline:3px solid var(--focus);outline-offset:4px}button{color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:.45rem .8rem}button:hover{background:var(--surface-2)}input[type=search]{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:12px;padding:.65rem .9rem;min-width:0;width:100%;font:16px/1.4 'Trebuchet MS',sans-serif}.navbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;padding:16px 28px;background:var(--bg);border-bottom:1px solid var(--border)}.logo{font-size:18px;font-weight:bold;color:var(--text);text-decoration:none;white-space:nowrap}.logo span{color:var(--accent);margin-right:6px}.site-search{display:flex;align-items:center;width:min(430px,45vw);margin:0 auto;border:1px solid var(--border);background:var(--surface);border-radius:28px;padding:4px 8px}.site-search input{border:0;background:transparent}.site-search button{border:0;background:transparent;font-size:26px;padding:0 10px;line-height:1.2}.icon-button{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;padding:0;font-size:19px;flex-shrink:0}.container{max-width:1180px;width:calc(100% - 40px);margin:0 auto;padding:36px 0 60px}.panel{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:30px;box-shadow:var(--shadow)}.hero{display:grid;grid-template-columns:1.35fr 1fr;gap:20px;margin-bottom:24px}.hero-copy{padding:38px}.hero-copy h1 span{color:var(--accent)}.eyebrow{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;font-weight:bold;color:var(--warm);margin-bottom:10px}.subtitle{font-size:1.15rem;color:var(--muted);max-width:60ch}.metadata{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0;font-size:12px}.metadata span{border:1px solid var(--border);border-radius:20px;padding:3px 10px;background:var(--surface-2)}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 15px}.primary-link,.secondary-link{display:inline-flex;align-items:center;gap:16px;text-decoration:none;border-radius:10px;padding:11px 16px;font:600 14px/1.4 'Trebuchet MS',sans-serif}.primary-link{background:var(--accent);color:var(--surface);border:1px solid var(--accent)}html[data-theme=dark] .primary-link{color:#10231b}.secondary-link{border:1px solid var(--border);color:var(--text);background:var(--surface-2)}.fine{font-size:13px;color:var(--muted);line-height:1.6}.hero-card{box-shadow:none;background:var(--surface)}.hero-card h2{font-size:1.65rem}.hero-card>a{font-size:16px}.workflow{padding:0;margin:22px 0;list-style:none}.workflow li{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--border)}.workflow li>span{color:var(--warm);font-size:12px;border:1px solid var(--border);border-radius:50%;width:32px;height:32px;display:grid;place-items:center}.workflow strong{font-size:15px}.workflow small{display:block;font:14px/1.6 Georgia,serif;color:var(--muted)}.section-heading{display:flex;justify-content:space-between;gap:10px;align-items:baseline}.muted{font-size:13px;color:var(--muted)}.chapter-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.chapter-link{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--border);border-radius:14px;padding:17px 16px;text-decoration:none;color:var(--text);background:var(--surface-2);transition:background .15s,transform .15s}.chapter-link:hover{background:var(--bg-end);transform:translateY(-2px);text-decoration:none;border-color:var(--accent)}.chapter-number{color:var(--warm);font-size:14px;font-weight:bold;padding-top:1px}.chapter-link strong{font-size:17px;font-weight:normal;display:block}.chapter-link small{font-size:14px;line-height:1.5;display:block;margin-top:4px;color:var(--muted)}.arrow{margin-left:auto;color:var(--accent);font:19px/1.5 sans-serif}.chapter-link[aria-current=page]{border-color:var(--accent);box-shadow:inset 3px 0 var(--accent)}.chapter-overview{padding:24px}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.feature-grid .panel{box-shadow:none}.feature-grid p:not(.eyebrow){font-size:17px;color:var(--muted)}.reading-note{display:flex;align-items:center;justify-content:space-between;gap:25px;box-shadow:none}.reading-note p{max-width:65ch}.reading-note>a{flex-shrink:0}.breadcrumb{font-size:13px;display:flex;gap:10px;color:var(--muted);margin-bottom:22px}.chapter-header{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:34px 40px;margin-bottom:28px}.chapter-header h1{font-size:clamp(2rem,4vw,3.1rem)}.chapter-header .metadata{margin-bottom:0}.reading-layout{display:grid;grid-template-columns:240px minmax(0,1fr);align-items:start;gap:28px}.toc-panel{position:sticky;top:104px;max-height:calc(100vh - 125px);overflow:auto;padding:2px 5px}.page-toc{font:14px/1.55 'Trebuchet MS',sans-serif}.page-toc summary{font-weight:bold;padding:10px 0;cursor:pointer}.toc ul{list-style:none;margin:0;padding:0}.toc li{margin:0}.toc a{display:block;padding:7px 9px;text-decoration:none;border-left:2px solid var(--border);color:var(--muted)}.toc a:hover{color:var(--accent);background:var(--surface-2)}.print-button{font-size:13px;margin-top:20px}.prose{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:34px 40px;min-width:0;font-size:18px}.prose>h2{margin-top:46px;padding-top:25px;border-top:1px solid var(--border);scroll-margin-top:100px}.prose>h2:first-child{margin-top:0;padding-top:0;border-top:0}.prose li{margin-bottom:9px}.prose ul,.prose ol{padding-left:1.4em}.prose code{font: .84em/1.5 ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--code);padding:2px 5px;border-radius:4px;overflow-wrap:anywhere}.table-wrap{overflow-x:auto;max-width:100%;margin:22px 0;border:1px solid var(--border);border-radius:10px}table{border-collapse:collapse;width:100%;font-size:15px;line-height:1.6}th,td{text-align:left;vertical-align:top;padding:12px 14px;border-bottom:1px solid var(--border);min-width:110px}th{font-family:'Trebuchet MS',sans-serif;background:var(--surface-2);font-weight:bold}tr:last-child td{border-bottom:0}td code{font-size:.9em}.code-block{background:var(--code);border:1px solid var(--border);border-radius:12px;margin:24px 0;overflow:hidden}.code-toolbar{display:flex;align-items:center;justify-content:space-between;padding:7px 12px;border-bottom:1px solid var(--border);color:var(--muted);font-size:12px}.copy-button{padding:4px 10px;font-size:12px}.code-block pre{margin:0;padding:20px;overflow:auto;line-height:1.65;font-size:14px;tab-size:4}.code-block pre code{padding:0;overflow-wrap:normal;font-size:inherit;line-height:inherit}.callout,.checkpoint{border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:8px;background:var(--surface-2);padding:20px;margin:25px 0}.callout p{margin:.5rem 0 0}.checkpoint h3{margin:0 0 12px}.checkpoint label{display:flex;align-items:flex-start;gap:10px;margin:9px 0;font-size:16px;cursor:pointer}.checkpoint input{margin-top:7px;width:17px;height:17px;accent-color:var(--accent);flex-shrink:0}.progress-note{font:12px/1.5 'Trebuchet MS',sans-serif;color:var(--muted);margin-top:12px}.reset-checks{font-size:12px;margin-top:8px}.page-nav{display:flex;gap:18px;justify-content:space-between;border-top:1px solid var(--border);padding-top:24px;margin-top:40px}.page-nav a{max-width:48%;text-decoration:none;line-height:1.4}.page-nav small{display:block;color:var(--muted);font-size:12px;margin-bottom:5px}.page-nav a:last-child{text-align:right}footer{border-top:1px solid var(--border);padding:30px 20px;text-align:center;font-size:14px;color:var(--muted)}footer p{margin:4px 0}dialog{color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:20px;max-width:720px;width:calc(100% - 32px);max-height:85vh;padding:24px;box-shadow:var(--shadow)}dialog::backdrop{background:#101a2b88;backdrop-filter:blur(3px)}.menu-dialog{max-width:440px;margin:0 auto 0 0;height:100dvh;max-height:100dvh;border-radius:0 20px 20px 0}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:16px}.dialog-heading h2{margin:0;font-size:1.45rem}.menu-dialog nav{display:grid;gap:9px;margin-top:22px}.menu-dialog .chapter-link small{font-size:12px}.menu-dialog .chapter-link{padding:12px;gap:12px}.home-link{font-size:15px}.search-result{display:block;text-decoration:none;color:var(--text);padding:17px 0;border-bottom:1px solid var(--border)}.search-result strong{display:block;color:var(--accent);font:600 18px/1.3 'Trebuchet MS',sans-serif}.search-result small{font:12px/1.5 'Trebuchet MS',sans-serif;color:var(--muted)}.search-result p{font-size:15px;margin:5px 0 0}.filter-label{display:block;font-size:15px;font-weight:bold;margin-bottom:8px}.no-results{padding:15px;background:var(--surface-2)}[hidden]{display:none!important}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--text);color:var(--surface);padding:10px 18px;border-radius:10px;font:14px sans-serif;z-index:100;max-width:90vw}#toast:empty{display:none}.skip-link{position:fixed;top:-80px;left:10px;background:var(--surface);padding:12px;z-index:200}.skip-link:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:960px){.hero{grid-template-columns:1.2fr 1fr}.hero-copy{padding:28px}.reading-layout{grid-template-columns:minmax(0,1fr)}.toc-panel{position:static;max-height:none}.page-toc{border:1px solid var(--border);border-radius:12px;background:var(--surface);padding:8px 18px}.toc ul{columns:2}.toc li{break-inside:avoid}.print-button{margin:10px 0}.prose{padding:30px}.reading-note{display:block}.navbar{padding:12px 20px}.chapter-link small{font-size:13px}}
@media(max-width:680px){body{font-size:17px}.container{width:calc(100% - 24px);padding-top:22px}.navbar{flex-wrap:wrap;padding:10px 14px;gap:8px}.logo{margin-right:auto;font-size:16px}.site-search{order:4;width:100%;max-width:none;margin-top:3px;padding:1px 6px}.icon-button{height:36px;width:36px}.hero,.feature-grid,.chapter-grid{grid-template-columns:1fr}.hero-copy,.hero-card,.panel{padding:24px}.hero-copy h1{font-size:2.55rem}.hero-actions{flex-direction:column;align-items:stretch}.hero-actions a{justify-content:space-between}.hero-card h2 br{display:none}.workflow{margin:14px 0}.hero-card{box-shadow:none}.section-heading{display:block}.section-heading .muted{display:block;margin-bottom:16px}.chapter-link{padding:15px}.feature-grid{gap:15px}.chapter-header{padding:25px}.chapter-header h1{font-size:2.1rem}.prose{padding:23px 20px;font-size:17px}.prose h2{font-size:1.45rem}.toc ul{columns:1}html{scroll-padding-top:150px}.prose>h2{scroll-margin-top:145px}.code-block pre{font-size:12px;padding:14px}.callout,.checkpoint{padding:16px}.breadcrumb{font-size:12px}.page-nav{font-size:15px;gap:12px}.metadata{margin:16px 0}.reading-layout{gap:14px}.table-wrap{margin-left:0}th,td{padding:10px}.menu-dialog{width:min(440px,94vw)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{body{background:white;color:black;font-size:11pt}.navbar,.toc-panel,.breadcrumb,.page-nav,footer,.copy-button,.reset-checks,#toast,.skip-link{display:none!important}.container{width:100%;max-width:none;padding:0}.reading-layout{display:block}.prose,.chapter-header,.panel{border:0;box-shadow:none;padding:0;background:white}.prose>h2{break-after:avoid;margin-top:20px}.code-block,table,.checkpoint{break-inside:avoid}.code-block pre{white-space:pre-wrap}.table-wrap{overflow:visible}.prose a{color:inherit;text-decoration:underline}.chapter-header h1{font-size:26pt}.metadata{display:none}.chapter-grid{grid-template-columns:1fr 1fr}}
/* Keep long resource names and Swedish compound words inside narrow columns. */
.prose,.chapter-header,.page-toc,.chapter-link{overflow-wrap:anywhere}
.chapter-number{flex:0 0 2.2ch;text-align:right;font-variant-numeric:tabular-nums}.chapter-link>span:nth-child(2){min-width:0;flex:1}.arrow{flex-shrink:0}
.course-intro{margin-bottom:24px}.course-intro h1{max-width:18ch}.course-intro .subtitle{margin-bottom:0}.course-choices{margin:0 0 24px}.course-choices .panel{display:flex;flex-direction:column;align-items:flex-start}.course-choices .panel p:not(.eyebrow){flex:1}.course-choices .panel a{margin-top:8px}.chapter-overview h2{margin-bottom:22px}
body[data-page=index] .navbar .logo{margin-right:auto}