/* Learn uses the homepage's world, dialogue, panel colors and resize handles. */
.learn-site { --learn-good:var(--success,#82b99c); --learn-warn:var(--warning,#d6b276); --learn-bad:var(--error,#cf8182); display:flex; flex-direction:column; height:100dvh; overflow:hidden; }
.learn-site [hidden] { display:none !important; }
.learn-site button,.learn-site a { -webkit-tap-highlight-color:transparent; touch-action:manipulation; }
.learn-site :focus-visible { outline:2px solid var(--accent); outline-offset:3px; }
.learn-sr { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); }
.learn-skip { position:fixed; top:-100px; left:16px; z-index:30; background:var(--paper); padding:12px; }.learn-skip:focus { top:8px; }
.learn-site :where(button:not(.iris-world__actor):not(.learn-prop)) { display:inline-flex; align-items:center; justify-content:center; gap:7px; min-height:40px; border:1px solid var(--line); border-radius:var(--r-xs); background:transparent; color:var(--ink); padding:7px 12px; font:13px var(--font-ui); cursor:pointer; }
.learn-site button:disabled { opacity:.45; cursor:default; }.learn-site button:hover:not(:disabled) { border-color:var(--accent); }
.learn-site .learn-primary,.learn-site [data-auto][aria-pressed=true] { background:var(--accent); color:var(--accent-ink); border-color:var(--accent); font-weight:600; }
.learn-header { display:flex; align-items:center; justify-content:space-between; flex:none; height:60px; padding:8px max(18px,calc((100vw - 1240px)/2)); transition:height .22s,padding .22s; z-index:10; background:var(--paper); }
.learn-brand { display:inline-flex; align-items:center; gap:10px; text-decoration:none; color:var(--ink); }.learn-brand>span { font:26px var(--font-pixel); }
.learn-site .public-menu { display:inline-flex; min-width:44px; min-height:44px; padding:8px; background:var(--panel); }
.learn-site .public-menu svg { width:18px; height:18px; display:block; fill:currentColor; }
.learn-header[data-hidden] { height:0; padding-block:0; border:0; }.learn-header[data-hidden] .learn-brand { visibility:hidden; }.learn-header[data-hidden] [data-public-menu] { position:fixed; right:18px; top:max(8px,env(safe-area-inset-top)); }
.learn-site .public-menu-dialog { padding-top:env(safe-area-inset-top); }.learn-site .public-menu-head { min-height:60px; }.learn-site .public-menu-head [data-close] { color:var(--learn-bad); }
.learn-menu-items { display:flex; flex-direction:column; gap:8px; padding-block:20px; }.learn-menu-items :is(button,a) { display:flex; align-items:center; justify-content:flex-start; min-height:44px; padding:10px 12px; border:0; border-bottom:1px solid var(--line); border-radius:0; color:var(--ink); font:16px var(--font-ui); text-decoration:none; }.learn-menu-items [data-term-count] { margin-left:auto; color:var(--muted); font:12px var(--font-mono); }
.learn-shell { display:flex; flex-direction:column; width:min(1240px,100%); flex:1; min-height:0; margin-inline:auto; }
.learn-heading { flex:none; display:grid; grid-template-columns:minmax(0,1fr) auto; align-items:center; gap:7px 16px; padding:12px 18px; }
.learn-heading>div:first-child { display:contents; }.learn-eyebrow { font:11px/1.4 var(--font-mono); color:var(--accent); margin:0; }.learn-heading [data-unit] { grid-column:1; padding-right:48px; }
.learn-heading h1 { grid-column:1; margin:0; font:500 clamp(22px,2.8vw,32px)/1.15 var(--font-pixel); }.learn-heading>.learn-stars { grid-column:2; grid-row:2; }
.learn-stars { display:inline-flex; flex-direction:row; flex-wrap:nowrap; align-items:center; justify-content:flex-end; gap:4px; flex:none; white-space:nowrap; color:var(--accent); font:11px var(--font-mono); }
.learn-stars svg { width:14px; height:14px; display:block; flex:none; shape-rendering:crispEdges; }.learn-stars svg[data-earned=false] { opacity:.22; }.learn-stars>span { margin-left:4px; }
.learn-notice { flex:none; padding:8px 18px; color:var(--learn-warn); font-size:13px; }
.learn-layout { position:relative; display:flex; flex-direction:column; flex:1; min-height:0; overflow:hidden; border-block:1px solid var(--line); }
.learn-stage.world-stage { height:auto; flex:1; min-height:0; overflow:hidden; }.learn-stage.world-stage>iris-world { display:block; height:100%; background:color-mix(in srgb,var(--fern) 25%,var(--paper)); }.learn-stage .iris-world__stage { height:100%; min-height:0; }
.learn-desks.journey-desk { flex:none; min-height:0; }
.learn-journey-heading { display:flex; align-items:center; justify-content:space-between; gap:10px; min-height:36px; }.learn-journey-heading h2 { font:14px var(--font-ui); margin:0; }.learn-journey-heading>span { font:11px var(--font-mono); color:var(--muted); }
.learn-journey ol { list-style:none; padding:5px 0; margin:0; }.learn-journey li button { width:100%; min-height:32px; justify-content:flex-start; text-align:left; border:0; border-radius:3px; padding:5px 0; font:12px/1.4 var(--font-ui); }.learn-journey li button>i { width:16px; flex:none; color:var(--muted); font-style:normal; }.learn-journey li i svg { display:block; width:14px; height:14px; }.learn-journey li[data-done=true] button { color:var(--muted); text-decoration:line-through; }.learn-journey li[data-done=true] i { color:var(--learn-good); }.learn-journey li[data-current=true] button { color:var(--accent); }
.learn-reading { border-top:1px solid var(--line); padding:10px 0; }.learn-reading summary { cursor:pointer; font-size:12px; }.learn-reading p,.learn-reading ul { font:12px/1.6 var(--font-ui); color:var(--muted); }.learn-reading h3 { font-size:13px; }.learn-reading ul { padding-left:18px; }.learn-reading a { color:var(--accent); }
.learn-lesson { padding:0; }.learn-lesson-scroll { overscroll-behavior:contain; scrollbar-width:thin; }.learn-step-head { display:flex; justify-content:space-between; align-items:center; gap:10px; font:11px var(--font-mono); color:var(--accent); }.learn-step-head [data-auto] { min-height:32px; padding:4px 8px; font-size:12px; }
.learn-narration { display:none; } /* Shared wooden dialogue already shows the narration. */
.learn-worked { font:13px/1.6 var(--font-ui); }.learn-worked h3 { font-size:13px; margin:14px 0 6px; }.learn-worked p { margin:7px 0 14px; }.learn-mistake { border-left:2px solid var(--accent); padding-left:12px; color:var(--muted); }
.learn-actions { flex:none; display:flex; justify-content:space-between; align-items:center; gap:12px; padding:8px 18px max(8px,env(safe-area-inset-bottom)); min-height:58px; border-top:1px solid var(--line); background:var(--paper); }.learn-actions button:last-child { min-width:130px; }
.learn-activity { margin:14px 0 0; }.learn-activity fieldset,.learn-test fieldset { border:0; margin:0; padding:0; min-width:0; }.learn-activity legend { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); }
.learn-choice { display:flex; align-items:flex-start; gap:10px; border:1px solid var(--line); border-radius:var(--r-xs); padding:10px; margin:8px 0; cursor:pointer; font:13px/1.5 var(--font-ui); }.learn-choice:has(input:checked) { border-color:var(--accent); background:var(--line-soft); }.learn-choice input { margin-top:4px; accent-color:var(--accent); flex:none; }
.learn-range { display:grid; grid-template-columns:1fr auto; align-items:center; gap:16px; }.learn-range input { width:100%; accent-color:var(--accent); min-height:42px; }.learn-range output { min-width:32px; font:18px var(--font-mono); color:var(--accent); }.learn-lab-output { display:flex; gap:7px; flex-wrap:wrap; font:11px var(--font-mono); padding:8px 0; }.learn-lab-output>span { border:1px solid var(--line); padding:5px; }.learn-lab-output [data-correct=true] { color:var(--learn-good); }.learn-lab-output [data-correct=false] { color:var(--learn-bad); }
.learn-feedback { margin-top:12px; border-left:3px solid var(--learn-warn); padding:8px 12px; font:13px/1.5 var(--font-ui); }.learn-feedback[data-correct=true] { border-color:var(--learn-good); color:var(--learn-good); }
.learn-scenery { position:absolute; inset:auto 0 96px; width:100%; height:calc(100% - 96px); shape-rendering:crispEdges; }.learn-scenery .scene-ambient { animation:learn-twinkle 4s ease-in-out infinite alternate; }.learn-scenery .scene-signal { stroke-dasharray:8 8; animation:learn-signal 5s linear infinite; }
.learn-scene-objects { position:absolute; inset:0; pointer-events:none; }.learn-world .learn-prop.journey-sign { position:absolute; z-index:3; --learn-sign-bottom:clamp(196px,50%,270px); bottom:var(--learn-sign-bottom); width:29%; max-width:180px; height:44px; min-height:44px; margin:0; padding:0; border:0; border-radius:0; background:transparent; pointer-events:auto; display:flex; flex-direction:column; align-items:stretch; }
.learn-prop:nth-child(1) { left:4%; }.learn-world .learn-prop:nth-child(2) { left:50%; translate:-50% 0; transform:none; }.learn-prop:nth-child(3) { right:4%; }.learn-prop[aria-pressed=true]>span { outline:2px solid var(--accent); outline-offset:2px; }.learn-prop>span { flex:none; font-size:12px; }.learn-world .learn-prop>i { position:absolute; top:44px; height:calc(var(--learn-sign-bottom) - 97px); width:6px; left:calc(50% - 3px); pointer-events:none; background:var(--bark); }
.learn-site .iris-world__actor,.learn-site .iris-world__actor:is(:hover,:active,:focus) { display:block; padding:0; min-height:0; border:0; border-radius:0; background:transparent; box-shadow:none; transform:translateX(-50%); }.learn-site .iris-world__actor:focus-visible { outline:1px dashed var(--accent); }
.learn-scene-lab { position:absolute; z-index:5; bottom:200px; left:12%; right:12%; padding:8px 12px; border:3px solid var(--bark); background:var(--paper); }.learn-world:has(.learn-scene-lab:not([hidden])) .learn-scene-objects { display:none; }.learn-scene-lab .learn-activity { margin:0; }.learn-world[data-lab=threshold] .scene-rain { opacity:var(--rain-strength,.5); }
.learn-test { min-height:0; flex:1; overflow:auto; overscroll-behavior:contain; padding:18px; }.learn-shell[data-testing] .learn-layout,.learn-shell[data-testing]>.learn-actions { display:none; }.learn-test-heading { display:flex; align-items:center; justify-content:space-between; gap:12px; }.learn-test-heading h2 { margin:0; font:24px var(--font-pixel); }.learn-test-heading>span { font:11px var(--font-mono); color:var(--muted); }.learn-test>p { font-size:13px; color:var(--muted); }.learn-test fieldset { margin:20px 0; padding-top:16px; border-top:1px solid var(--line); }.learn-test legend { font-weight:600; font-size:14px; }.learn-test-result { padding-top:18px; }.learn-test-result h3 { font-size:20px; }.learn-test-result p { font:13px/1.6 var(--font-ui); }.learn-test-result details { margin:12px 0; border-left:3px solid var(--learn-bad); padding:6px 12px; }.learn-test-result details[data-correct=true] { border-color:var(--learn-good); }.learn-test-result summary { font-size:13px; cursor:pointer; }.learn-result-actions { display:flex; gap:8px; flex-wrap:wrap; }
.learn-drawer { overflow-y:auto; overscroll-behavior:contain; scrollbar-width:thin; width:min(620px,calc(100% - 24px)); max-height:calc(100dvh - 32px); padding:18px; color:var(--ink); background:var(--paper); border:1px solid var(--line-strong); border-radius:var(--r-xs); box-shadow:4px 4px 0 var(--line-soft); }.learn-drawer::backdrop { background:#0009; }.learn-drawer>header { position:sticky; top:-18px; z-index:2; display:flex; align-items:center; justify-content:space-between; gap:12px; padding:10px 0; background:var(--paper); }.learn-drawer h2 { font:24px var(--font-pixel); margin:0; }.learn-drawer [data-close] { color:var(--learn-bad); width:40px; min-width:40px; font-size:23px; }.learn-drawer>p { font:13px/1.6 var(--font-ui); color:var(--muted); }.learn-drawer h3 { font-size:14px; margin:20px 0 10px; }
.learn-site .learn-map-item { width:100%; justify-content:space-between; text-align:left; margin:7px 0; padding:10px; }.learn-map-copy { display:grid; gap:5px; min-width:0; }.learn-map-item strong { font-size:13px; }.learn-map-item small { font:11px/1.5 var(--font-ui); color:var(--muted); }.learn-map-item[aria-current=page] { border-color:var(--accent); }
.learn-notebook-search { width:100%; min-height:40px; border:1px solid var(--line); background:transparent; color:var(--ink); padding:8px 10px; font:13px var(--font-ui); margin:10px 0; }
.learn-note-entry { border-bottom:1px solid var(--line); }.learn-note-entry>summary { display:grid; grid-template-columns:1fr auto; align-items:center; gap:4px 12px; padding:12px 0; cursor:pointer; list-style:none; }.learn-note-entry>summary::-webkit-details-marker { display:none; }.learn-note-entry>summary::after { content:'+'; grid-column:2; grid-row:1 / 3; color:var(--accent); font:18px var(--font-mono); }.learn-note-entry[open]>summary::after { content:'−'; }.learn-note-entry>summary>strong,.learn-note-entry>summary>small { grid-column:1; }.learn-note-entry strong { font-size:14px; }.learn-note-entry small { color:var(--muted); font:11px var(--font-mono); }.learn-note-body p { font:13px/1.6 var(--font-ui); margin:6px 0 12px; }.learn-note-body button { margin:0 0 12px; }
@keyframes learn-twinkle { from { opacity:.4; } to { opacity:1; } }@keyframes learn-signal { to { stroke-dashoffset:-64; } }
.learn-stage .iris-world__stage { container:learn-scene / size; }
@container learn-scene (max-height:250px) {
  .learn-world .learn-prop.journey-sign { --learn-sign-bottom:calc(100cqh - 40px); height:32px; min-height:32px; }
  .learn-world .learn-prop>span { min-height:32px; padding:4px 2px; font-size:10px; }
  .learn-world .learn-prop>i { top:32px; }
  .learn-world[data-guided] .iris-world__actor { width:48px; height:52px; }
}
@media(max-width:720px) { .learn-header { height:56px; }.learn-heading { grid-template-columns:minmax(0,1fr); padding:10px 18px; gap:5px; }.learn-heading>.learn-stars { grid-column:1; grid-row:3; justify-content:flex-start; }.learn-heading h1 { font-size:23px; }.learn-heading [data-unit] { font-size:10px; }.learn-journey-heading { min-height:28px; }.learn-journey-heading h2 { font-size:12px; }.learn-journey li button { font-size:11px; min-height:28px; }.learn-worked,.learn-worked h3 { font-size:12px; }.learn-prop>span { font-size:10px; }.learn-drawer { padding:16px; }.learn-drawer>header { top:-16px; }.learn-test-heading { align-items:flex-start; flex-direction:column; } }
@media(prefers-reduced-motion:reduce) { .learn-site *, .learn-site *::before,.learn-site *::after { animation:none !important; transition:none !important; scroll-behavior:auto !important; } }