/* Desktop web layout (mouse + wide screen). Touch devices keep the app layout above.
   Shell: persistent left sidebar instead of top header + bottom tab bar; pages use the full width
   with a centred reading measure and normal in-page scrolling where content is long. */
@media(min-width:1024px) and (hover:hover) and (pointer:fine){
 :root{--rail:84px;--desk-measure:1240px;--page-pad:40px}
 body{background:var(--paper)}
 .entry-shell,.entry-shell:has(.channels),.entry-shell:has(.article-open),.is-flash .entry-shell{max-width:none;margin:0;padding:0;box-shadow:none;height:100vh;height:100dvh;display:grid;grid-template-columns:var(--rail) minmax(0,1fr);grid-template-rows:auto minmax(0,1fr);--header-height:auto;background:var(--paper)}
 /* Sidebar surface is its own grid item so page-specific header/nav rules cannot leave gaps in it. */
 .entry-shell::before{content:'';grid-column:1;grid-row:1/3;background:#fffdfa}
 .entry-shell::after{content:'';grid-column:1;grid-row:1/3;justify-self:end;width:1px;background:#e7e7dd;z-index:2;pointer-events:none}

 /* Sidebar: brand + navigation stay visible on every page, including flash, themes and articles. */
 .entry-shell .entry-header,.entry-shell:has(.article-open) .entry-header{grid-column:1;grid-row:1;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;height:auto;min-height:0;margin:0;padding:26px 20px 18px;background:none;border:0;position:relative;z-index:1}
 .entry-shell .header-note{display:none}
 .entry-shell .brand{gap:12px;font-size:17px}
 .entry-shell .brand-mark{width:44px;height:44px;flex:none;font-size:32px;line-height:41px;border-radius:14px}
 .entry-shell #entry-nav,.entry-shell:has(.channels) #entry-nav,.entry-shell:has(.article-open) #entry-nav{grid-column:1;grid-row:2;position:static;transform:none;display:flex;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:6px;width:auto;height:auto;margin:0;padding:6px 14px 24px;border:0;border-radius:0;background:none;z-index:1;box-shadow:none;align-self:stretch;justify-self:stretch}
 .entry-shell #entry-nav a{flex:none;flex-direction:row;justify-content:flex-start;gap:14px;height:48px;padding:0 15px;border-radius:14px;font-size:14px;color:#5d6555;transition:background .15s,color .15s}
 .entry-shell #entry-nav a:hover{background:#eef2e3;color:#374626}
 .entry-shell #entry-nav a[aria-current]{background:#d2e0aa;color:#374626;font-weight:650}
 .entry-shell #entry-nav .icon{width:22px;height:22px;flex:none}

 /* Content column: centred measure, scrolls inside itself when longer than the window. */
 .entry-shell #entry-main{grid-column:2;grid-row:1/3;min-width:0;padding:36px max(var(--page-pad),calc((100% - var(--desk-measure)) / 2)) 40px;scrollbar-gutter:stable}

 a,button,summary,select,label:has(input){cursor:pointer}
 :is(.channel,.desk-task,.desk-theme-tab,.primary-button,.status-pill){transition:transform .16s,box-shadow .16s,background .16s,border-color .16s}

 /* Home: heading + learning summary side by side, then the four channels in one row. */
 #entry-main:has(.channels){display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.9fr);grid-template-rows:auto auto auto;gap:28px 40px;overflow-y:auto;align-content:center}
 #entry-main:has(.channels)>.page-heading{grid-column:1;grid-row:1;align-self:center;padding:0}
 #entry-main:has(.channels) h1{font-size:38px;line-height:1.3;max-width:none;margin:10px 0 8px}
 #entry-main:has(.channels) .lead{max-width:none;font-size:15px}
 #entry-main:has(.channels) .stats-placeholder{grid-column:2;grid-row:1;align-self:center;min-height:0;padding:22px 24px}
 #entry-main:has(.channels) .channels{grid-column:1/-1;grid-row:2;display:flex;flex-direction:column;min-height:0}
 #entry-main:has(.channels) .channels>.section-line{margin-bottom:16px}
 #entry-main:has(.channels) .channel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1.25fr)) minmax(220px,1fr);grid-template-rows:repeat(2,minmax(0,1fr));gap:20px}
 #entry-main:has(.channels) .channel-a1{grid-column:1;grid-row:1/3}
 #entry-main:has(.channels) .channel-a2{grid-column:2;grid-row:1/3}
 #entry-main:has(.channels) .channel-flash{grid-column:3;grid-row:1}
 #entry-main:has(.channels) .channel-articles{grid-column:3;grid-row:2}
 #entry-main:has(.channels) .channel{padding:22px}
 /* The scene art is one square tile of a 2×2 sprite: keep the window no taller than it is wide. */
 #entry-main:has(.channels) .course-window{flex:none;width:100%;aspect-ratio:16/10;min-height:0;max-height:none;margin:16px 0}
 #entry-main:has(.channels) .home-note{grid-column:1/-1;grid-row:3;text-align:left;margin:0}
 .channel:hover{transform:translateY(-3px);box-shadow:0 14px 30px #52653714}

 /* Themes: master-detail. List of themes on the left, the selected theme's tasks on the right. */
 #entry-main.directory-screen{display:flex;flex-direction:column;overflow:hidden;padding-bottom:28px}
 .directory-screen .directory-header .back-link{display:none}
 .directory-screen .directory-header .page-heading h1{font-size:30px}
 #directory-content.desk-directory{flex:1;min-height:0;overflow:hidden;margin-top:18px;padding:0;mask:none;-webkit-mask:none}
 .desk-themes{height:100%;display:grid;grid-template-columns:minmax(250px,300px) minmax(0,1fr);gap:28px}
 .desk-theme-list{min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding:4px 6px 4px 2px;scrollbar-width:thin}
 .desk-theme-tab{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:10px;width:100%;padding:12px 14px;border:1px solid transparent;border-radius:16px;background:none;text-align:left;color:var(--ink,#303b2b);font:inherit}
 .desk-theme-tab .theme-number{font-size:13px;color:#8a9180;font-variant-numeric:tabular-nums}
 .desk-tab-text{display:grid;gap:3px;min-width:0}
 .desk-tab-text strong{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
 .desk-tab-text small{font-size:12px;color:#68705f}
 .desk-tab-meter{position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;background:linear-gradient(90deg,#9db36b calc(var(--progress) * 100%),transparent 0);opacity:.8}
 .desk-theme-tab:hover{background:#f3f5ea}
 .desk-theme-tab[aria-selected=true]{background:#fffdfa;border-color:#dfe6cf;box-shadow:0 6px 18px #5265370d}
 .desk-theme-tab[aria-selected=true] .theme-number{color:#526537;font-weight:700}
 .desk-theme-panel{min-height:0;overflow-y:auto;border:1px solid #e2e5d7;border-radius:24px;background:#fffdfa;padding:26px 28px 30px;scrollbar-width:thin}
 .desk-theme-panel:focus{outline:none}
 .desk-theme-hero{display:grid;grid-template-columns:minmax(220px,300px) minmax(0,1fr);gap:26px;align-items:center;padding-bottom:24px;border-bottom:1px solid #ecede3;margin-bottom:22px}
 .desk-theme-art{display:block;aspect-ratio:4/3;border-radius:18px;background-color:#eef1e4;background-image:var(--scene-image);background-repeat:no-repeat;background-size:calc(var(--scene-cols,1) * 100%) calc(var(--scene-rows,1) * 100%);background-position:0 0}
 .desk-theme-intro .eyebrow{margin:0 0 8px}
 .desk-theme-intro h2{font-size:28px;line-height:1.3;margin:0 0 8px;font-weight:600}
 .desk-theme-intro>p:not(.eyebrow){margin:0 0 16px;color:#68705f;font-size:14px;line-height:1.7}
 .desk-theme-progress{display:grid;grid-template-columns:auto minmax(80px,240px);align-items:center;gap:6px 14px;font-size:13px;color:#5d6555}
 .desk-theme-progress .progress-track{display:block;height:6px;border-radius:6px;background:#ecefe2;overflow:hidden}
 .desk-theme-progress .progress-track>span{display:block;height:100%;background:#9db36b;border-radius:inherit}
 .desk-theme-progress small{grid-column:1/-1;font-size:11px;color:#8a9180}
 .desk-task-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
 .desk-task{display:grid;grid-template-rows:auto 1fr auto auto;gap:8px;min-height:150px;padding:18px;border:1px solid #e4e8d8;border-radius:18px;background:#fff}
 .desk-task-top{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#8a9180}
 .desk-task strong{font-size:16px;line-height:1.5;font-weight:600}
 .desk-task small{font-size:12px;color:#68705f}
 .desk-task-go{display:flex;align-items:center;gap:6px;font-size:13px;color:#526537;font-weight:600}
 .desk-task-go .icon{width:15px;height:15px;transition:transform .16s}
 .desk-task:hover{border-color:#c7d4a6;box-shadow:0 10px 24px #52653712;transform:translateY(-2px)}
 .desk-task:hover .desk-task-go .icon{transform:translateX(3px)}

 /* Flash: a readable card width centred in the content column. */
 .is-flash #entry-main.flash-screen{gap:10px;padding-top:28px;padding-left:max(var(--page-pad),calc((100% - 820px) / 2));padding-right:max(var(--page-pad),calc((100% - 820px) / 2));padding-bottom:32px}
 .flash-screen .flash-header .back-link{display:none}
 /* Mouse rating bar (desktop only): same actions as the swipes, keyboard key shown on each button. */
 .flash-desk-actions{flex:none;display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1fr) minmax(0,1fr);gap:12px}
 .flash-desk-actions>button{display:flex;align-items:center;justify-content:center;gap:10px;min-height:52px;border:1px solid #e2e5d7;border-radius:16px;background:#fffefb;font:inherit;font-size:15px;font-weight:550;color:#5d6555}
 .flash-desk-actions kbd{min-width:24px;padding:2px 6px;border:1px solid currentColor;border-radius:6px;font:12px/1.3 inherit;opacity:.55}
 .flash-desk-actions .flash-desk-fuzzy{color:#a16f3f;background:#faf3e9;border-color:#efdcc4}
 .flash-desk-actions .flash-desk-known{color:#416650;background:#eaf2e9;border-color:#cfe0cd}
 .flash-desk-actions>button:hover:not(:disabled){filter:brightness(.97);box-shadow:0 6px 16px #52653712}
 .flash-desk-actions>button:disabled{opacity:.4;cursor:default}

 /* Word selection: the library list sizes to its content instead of stretching into an empty panel. */
 .selection-library{flex:0 1 auto}
 .selection-theme:hover,.selection-level-toggle:hover{background:#f3f5ea}

 /* Statistics: overview across the top, the detail sections in two columns. */
 .memory-scroll{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;align-content:start}
 .memory-scroll>*{margin:0;min-width:0}
 .memory-scroll>:not(.memory-section),.memory-scroll>.memory-section:first-of-type{grid-column:1/-1}
 .memory-scroll>.memory-section{height:100%}

 /* Pages with their own inner scroller run to the bottom edge, so lists are not cut off above a blank strip. */
 #entry-main:is(.articles-screen,.stats-screen,.my-screen,.selection-screen):not(.article-open){padding-bottom:0}
 :is(.articles-scroll,.memory-scroll,.my-scroll){padding-bottom:32px}
 .selection-screen .selection-footnote{padding-bottom:18px}

 /* Articles: the reader keeps the sidebar; the list uses the wider measure. */
 .articles-screen:not(.article-open) .articles-header .back-link{display:none}
 .article-list{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
 .article-card:hover{border-color:#a5b978;box-shadow:0 12px 26px #52653712;transform:translateY(-2px)}
 /* The list is a workspace, so do not combine its old 1100px cap with shell gutters.
    Keep the header and filters fixed while the complete article list scrolls below. */
 .entry-shell #entry-main.articles-screen:not(.article-open){
  display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto minmax(0,1fr);
  gap:22px 24px;max-width:none;width:auto;margin:0;min-height:0;
  padding:32px clamp(28px,3vw,56px) 0;scrollbar-gutter:auto;
 }
 .articles-screen:not(.article-open)>.articles-header{grid-column:1;grid-row:1;min-width:0}
 .articles-screen:not(.article-open)>.articles-header h1{margin-bottom:7px}
 .articles-screen:not(.article-open)>.article-level{grid-column:2;grid-row:1;align-self:end;justify-self:end;gap:18px;padding-bottom:2px}
 .articles-screen:not(.article-open) [data-article-count]{padding:6px 11px;border:1px solid #dfe6d4;border-radius:9px;background:#eef4e4;color:#53664a;white-space:nowrap}
 .articles-screen:not(.article-open)>.article-filters{grid-column:1/-1;grid-row:2;grid-template-columns:minmax(220px,300px) minmax(0,1fr);gap:18px}
 .articles-screen:not(.article-open) .article-filters label{gap:7px;font-size:12px}
 .articles-screen:not(.article-open) .article-filters :is(select,input){height:44px;padding:10px 13px;border-radius:12px;font-size:14px}
 .articles-screen:not(.article-open)>.articles-scroll{grid-column:1/-1;grid-row:3;min-width:0;min-height:0;padding:2px 6px 32px 0;scrollbar-width:thin;scrollbar-color:#c8d2bb transparent}
 .articles-screen:not(.article-open) .article-list{grid-template-columns:repeat(auto-fill,minmax(min(100%,310px),1fr));gap:18px;align-items:stretch}
 .articles-screen:not(.article-open) .article-theme-group{margin-bottom:26px}
 .articles-screen:not(.article-open) .article-theme-group>h2{gap:10px;margin-bottom:12px;font-size:16px;line-height:1.5}
 .articles-screen:not(.article-open) .article-theme-group>h2::after{content:'';height:1px;flex:1;margin-left:6px;background:#e5e7dc}
 .articles-screen:not(.article-open) .article-card{min-width:0;min-height:210px;padding:20px;gap:9px;border-radius:18px;overflow-wrap:anywhere}
 .articles-screen:not(.article-open) .article-card h3{margin:3px 0 0;font-size:21px;line-height:1.4}
 .articles-screen:not(.article-open) .article-title-nl{font-size:18px;line-height:1.45}
 .articles-screen:not(.article-open) .article-task{font-size:12px;line-height:1.6}
 .articles-screen:not(.article-open) .article-meta{gap:8px;padding-top:12px;font-size:11px;line-height:1.5}
 .articles-screen:not(.article-open) .article-meta>span{white-space:nowrap}
 .entry-shell:has(.article-open) #entry-main{padding-top:24px;padding-bottom:0}
}
/* Wide desktops: the sidebar shows labels. */
@media(min-width:1280px) and (hover:hover) and (pointer:fine){
 :root{--rail:232px;--page-pad:48px}
}
@media(min-width:1700px) and (hover:hover) and (pointer:fine){
 :root{--rail:260px;--desk-measure:1400px;--page-pad:56px}
}
/* Narrow desktops: icon rail, brand mark only, labels kept for assistive tech. */
@media(min-width:1024px) and (max-width:1279px) and (hover:hover) and (pointer:fine){
 .entry-shell .entry-header{align-items:center;padding-inline:12px}
 .entry-shell .brand>span:not(.brand-mark){position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
 .entry-shell #entry-nav{padding-inline:12px}
 .entry-shell #entry-nav a{justify-content:center;padding:0;height:54px;flex-direction:column;gap:3px;font-size:10px}
}