/* Shared learned-workspace component. Immutable source: student-cabinet-three-column-r2.
   Base dependencies: cabinet tokens/font/reset and ui_analysis.css journal markup.
   No homework, grammar, retention or tool-feature CSS owns this component's recipe. */
.lc-board,.lc-word-list,.lc-layout .right-col-stack{--lc-panel:light-dark(#fff,#181b24);--lc-text:light-dark(#1a1a1a,#e6e8ee);--lc-muted:light-dark(#555,#aab1c2);--lc-dim:light-dark(#666,#8a93a6);--lc-border:light-dark(#ddd,#262a36);--lc-line:light-dark(#ececf0,#2c2f38);--lc-accent:light-dark(#cc1fb3,#ee58e0);--lc-soft:light-dark(#fdf3fb,#271e2a);--lc-surface:light-dark(#f5f5f5,#1f2128);--lc-quote:light-dark(#fbeef9,#302232);--lc-audio:light-dark(#e2e2e2,#2d3340);--lc-shadow:light-dark(rgba(0,0,0,.12),rgba(0,0,0,.4));--lc-font-en:'SF Mono',Menlo,monospace;--lc-gloss-size:15px;--lc-gloss-line:21px;color-scheme:light;color:var(--lc-text);font:400 16px/1.5 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
html.dark :is(.lc-board,.lc-word-list,.lc-layout .right-col-stack){color-scheme:dark}
.lc-board,.lc-board *,.lc-layout .right-col-stack *{box-sizing:border-box}
.lc-board [hidden],.lc-layout .right-col-stack [hidden]{display:none!important}
.app{container-type:inline-size;--lc-rail:0px;--lc-rail-gap:0px}
.app:has(.st-workspace){max-width:none;padding-left:24px;padding-right:24px;--lc-rail:56px;--lc-rail-gap:16px}
.app .tabs-left{padding-inline-start:calc(var(--lc-rail) + var(--lc-rail-gap) + 2px)}
.app:has(.lc-layout){padding-bottom:16px}
.st-workspace{container-type:inline-size;margin-top:22px}
.main-grid.lc-layout{--lc-usable:calc(100cqi - var(--lc-rail) - var(--lc-rail-gap) - 32px);--lc-left:calc(var(--lc-usable) * 1.08 / 3.85);--lc-center:calc(var(--lc-usable) * 1.77 / 3.85);--lc-transfer:clamp(0px,calc(var(--lc-left) - 200px),24px)}
.main-grid.with-next-steps.tab-learned.lc-layout{display:grid;grid-template-columns:minmax(0,calc(var(--lc-left) - var(--lc-transfer) + var(--lc-center) + 16px)) minmax(210px,1fr);gap:16px;align-items:start}
.main-grid.tab-learned.lc-layout .panel{background:transparent;border:0;border-radius:0;padding:0;min-height:0}
.main-grid.tab-learned.lc-layout .right-col-stack{display:block;margin:0;max-height:var(--lc-scroll-height,calc(100dvh - 170px));overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-gutter:stable;border-left:1px solid var(--lc-line);padding:0 8px 0 20px}
.main-grid.tab-learned.lc-layout .next-steps-col{display:block;margin:0;position:static}
.main-grid.tab-learned.lc-layout .next-steps-aside{display:block;margin:0;background:transparent;border:0;border-radius:0;padding:0;box-shadow:none}
.main-grid.tab-learned.lc-layout .ns-aside-header{display:block;min-height:24px;margin:0 0 16px}
.main-grid.tab-learned.lc-layout .ns-aside-header .lesson-label{font-size:16px;line-height:24px;font-weight:600}
.main-grid.tab-learned.lc-layout :is(.games-aside,.games-aside-header,.ns-header-actions,#focusBlock){display:none!important}
.lc-board{display:grid;grid-template-columns:minmax(200px,1.08fr) minmax(0,1.77fr);gap:16px;align-items:start;min-width:0}
.lc-layout .lc-board{grid-template-columns:minmax(200px,calc(var(--lc-left) - var(--lc-transfer))) minmax(0,1fr)}
.lc-scroll{max-height:var(--lc-scroll-height,calc(100dvh - 170px));overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-gutter:stable;min-width:0}
.lc-tiles{padding:2px 8px 2px 2px}
/* Native scrollbar visibility varies with browser/OS. Reserve its space and
   bound legacy WebKit width; idle thumb must not cover a tile or persist bold. */
.lc-tiles{scrollbar-color:transparent transparent}
.lc-tiles:hover,.lc-tiles:has(:focus-visible){scrollbar-color:var(--lc-dim) transparent}
.lc-tiles::-webkit-scrollbar{width:6px;height:6px}
.lc-tiles::-webkit-scrollbar-track{background:transparent}
.lc-tiles::-webkit-scrollbar-thumb{background:transparent;border-radius:6px}
.lc-tiles:hover::-webkit-scrollbar-thumb,.lc-tiles:has(:focus-visible)::-webkit-scrollbar-thumb{background:var(--lc-dim)}
@media(hover:none){.lc-tiles{scrollbar-color:var(--lc-dim) transparent}.lc-tiles::-webkit-scrollbar-thumb{background:var(--lc-dim)}}
@media(forced-colors:active){.lc-tiles{scrollbar-color:auto}.lc-tiles::-webkit-scrollbar-thumb{background:CanvasText}}

.lc-tile-content{display:flex;flex-direction:column;gap:12px;min-width:0}
[data-hq-pin-host]{position:relative;min-width:0}
.lc-tile{display:block;flex:none;width:100%;text-align:left;padding:20px;border:.5px solid var(--lc-border);border-radius:18px;background:var(--lc-panel);color:var(--lc-text);box-shadow:none;position:relative;font-family:inherit;cursor:pointer}
.lc-tile:hover{background:var(--lc-surface)}
.lc-tile[aria-pressed="true"]{background:var(--lc-soft);border-color:var(--lc-accent);box-shadow:none}
.lc-tile:focus-visible{outline:2px solid var(--lc-accent);outline-offset:2px}
.lc-tile small{display:block;color:var(--lc-muted);font-size:13px;line-height:20px;font-weight:600}
.lc-tile strong{display:block;font:700 17px/22px var(--lc-font-en);overflow-wrap:anywhere;margin:8px 0 4px}
.lc-tile-ru{display:block;overflow-wrap:anywhere}
.lc-board :is(.lc-tile-ru,.jl-ru){font-size:var(--lc-gloss-size);line-height:var(--lc-gloss-line);color:var(--lc-muted)}
.lc-retention-tile strong{font-family:inherit}
.lc-retention-tile small{color:var(--lc-accent)}
.lc-summary-tile{display:grid;grid-template-columns:minmax(0,1fr) 40px;gap:12px;align-items:center;cursor:default}
.lc-summary-tile:hover{background:var(--lc-panel)}
.lc-summary-text{font-size:15px;line-height:21px;overflow-wrap:anywhere}
.lc-summary-illustration{display:block;font-size:40px;line-height:1;pointer-events:none}
.lc-retention-entry{flex:none;min-width:0}
.lc-retention-status{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:12px;color:var(--lc-muted);font-size:13px;line-height:20px}
.lc-retention-status svg{flex:none;width:16px;height:16px;color:var(--lc-accent)}
.lc-detail{padding:0 8px 0 2px}
.lc-detail-content>h1{margin:0 0 20px;font-size:16px;line-height:24px;font-weight:600;color:var(--lc-text)}
.lc-detail .jl-row{display:block;padding:22px 0;border-top:1px solid var(--lc-line);position:relative}
.lc-detail .jl-row:first-of-type{padding-top:0;border-top:0}
.lc-detail .jl-anchor{padding:0;margin-bottom:16px}
.lc-detail .jl-term{margin:0;font:700 21px/26px var(--lc-font-en);color:var(--lc-text);overflow-wrap:anywhere}
.lc-detail .jl-term .en{font:inherit}
.lc-detail .jl-ru{margin:4px 0 0}
.lc-detail .jl-audio-controls{display:flex;margin-top:10px}
.lc-board .rv2-audio{display:flex;align-items:center;justify-content:center;flex:none;width:32px;height:32px;border:0;border-radius:50%;padding:0;margin:0;background:var(--lc-audio);color:var(--lc-text);cursor:pointer}
.lc-board .rv2-audio .rv2-audio-ic{display:inline-flex;line-height:0}
.lc-board .rv2-audio .ic-play{display:block}
.lc-board .rv2-audio .ic-pause{display:none}
.lc-board .rv2-audio.playing .ic-play{display:none}
.lc-board .rv2-audio.playing .ic-pause{display:block}
.lc-board .rv2-audio svg{width:18px;height:18px;flex:none;stroke-width:1.8}
.lc-board .rv2-audio .rv2-audio-ic svg{width:18px;height:18px}
.lc-board .rv2-audio.playing{background:var(--lc-soft);color:var(--lc-accent)}
.lc-detail .jl-body>.jl-q{margin:16px 0 12px;background:var(--lc-quote);border-radius:10px;padding:10px 12px}
.lc-detail .jl-qava{display:none}
.lc-detail .jl-qwho{margin-bottom:5px}
.lc-detail .jl-qname{font-size:12px;line-height:18px;font-weight:600;color:var(--lc-text)}
.lc-detail .jl-qtext{font-size:15px;line-height:24px;color:var(--lc-text)}
.lc-detail .jl-qtext .en{font:inherit;color:var(--lc-text)}
.lc-detail .jl-expl .en{font-family:'SF Mono',Menlo,monospace;font-size:.93em;color:var(--lc-text)}
.lc-detail .jl-expl,.lc-summary{font-size:15px;line-height:22px;margin:12px 0 0;color:var(--lc-text)}
.lc-layout .ns-words{margin:0;padding:0;border:0}
.lc-layout .ns-words-header{display:flex;align-items:center;justify-content:flex-start;flex-wrap:wrap;gap:8px;margin:0 0 16px}
.lc-layout .ns-words-header .ns-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;height:auto;border:.5px solid var(--lc-border);border-radius:10px;padding:7px 12px;background:var(--lc-panel);font-family:inherit;font-size:14px;line-height:20px;font-weight:500;box-shadow:0 1px 2px var(--lc-shadow);white-space:normal;color:var(--lc-text)}
.lc-layout .ns-words-header .ns-btn-primary{background:#cc1fb3;color:#fff;border-color:#cc1fb3}
.lc-layout .ns-words-header .ns-btn:disabled{background:var(--lc-surface);color:var(--lc-dim);border-color:var(--lc-border);box-shadow:none}
.lc-layout .ns-words-header svg{width:18px;height:18px;stroke-width:1.8;flex:none}
.lc-word-list{min-width:0}
.lc-word{display:grid;grid-template-columns:var(--word-audio-size,24px) minmax(0,1.1fr) minmax(0,1fr);gap:8px;align-items:start;border-top:1px solid var(--lc-line);padding:10px 0;font-size:13px;line-height:20px}
.lc-word .lc-word-audio{grid-row:1}
.lc-word-en{font:500 13px/21px 'SF Mono',Menlo,monospace;overflow-wrap:anywhere}
.lc-word-ru{color:var(--lc-muted);overflow-wrap:anywhere}
.lc-word .ns-word-source-badge{display:table;font:400 11px/16px -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--lc-surface);border-radius:8px;padding:0 6px;color:var(--lc-dim);margin-top:3px}
.lc-word .jl-audio-error{grid-column:2/-1;font-size:13px;color:var(--lc-muted)}
@container(max-width:1050px){.main-grid.tab-learned.lc-layout .right-col-stack{padding-left:16px}.lc-word{grid-template-columns:var(--word-audio-size,24px) minmax(0,1fr);row-gap:2px}.lc-word .lc-word-audio{grid-row:1/3}.lc-word-ru{grid-column:2}}
@container(max-width:866px){.main-grid.with-next-steps.tab-learned.lc-layout{grid-template-columns:1fr}.lc-layout .lc-board{grid-template-columns:minmax(160px,.75fr) minmax(0,1.5fr)}.lc-scroll{max-height:none;overflow:visible;scrollbar-gutter:auto}.main-grid.tab-learned.lc-layout .right-col-stack{max-height:none;overflow:visible;scrollbar-gutter:auto;border-left:0;border-top:1px solid var(--lc-line);padding:24px 0 0;margin-left:0}.lc-word{grid-template-columns:var(--word-audio-size,24px) minmax(0,1fr) minmax(0,1fr)}.lc-word .lc-word-audio{grid-row:1}.lc-word-ru{grid-column:auto}}
@container(max-width:520px){.lc-layout .lc-board{grid-template-columns:1fr;gap:24px}}

@media(pointer:coarse){.app:has(.st-workspace){--lc-rail:58px}}
@media(max-width:500px){.app:has(.st-workspace){--lc-rail-gap:12px}}

/* Speech is a full-width tab, as are homework and progress. */
.main-grid.tab-speech{align-items:stretch}

/* Talk-share component. Base dependencies: cabinet tokens/fonts only.
   Surface recipe: shared cabinet popovers (panel/border, radius16, soft shadow).
   No tool, homework or analysis-feature CSS is needed for its geometry. */
.tabs .tab-talkbar{--tb-detail-track:light-dark(#f5f5f5,#272b35);position:absolute;left:100%;top:50%;transform:translateY(-50%);margin-left:12px;display:inline-flex;align-items:center;gap:7px;border:0;padding:6px 0;background:transparent;font-family:inherit;font-size:14px;line-height:20px;font-weight:500;color:var(--text-muted);white-space:nowrap;cursor:default;box-sizing:border-box;color-scheme:light}
html.dark .tab-talkbar{color-scheme:dark}
.tabs .tab-talkbar.tb-open{z-index:210}
.tab-talkbar:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:4px}
.tab-talkbar .tb-track{width:72px;height:4px;border-radius:999px;background:color-mix(in srgb,var(--text-muted) 22%,transparent);overflow:hidden}
.tab-talkbar .tb-fill{display:block;height:100%;border-radius:999px;background:var(--accent-fill)}
.tb-tooltip{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(calc(-50% + var(--tb-tooltip-shift,0px)));display:block;box-sizing:border-box;width:336px;max-width:calc(100vw - 64px);padding:18px;border:1px solid var(--border);border-radius:16px;background:var(--panel);color:var(--text);box-shadow:0 6px 24px var(--shadow-pop,light-dark(rgba(0,0,0,.12),rgba(0,0,0,.4)));font:400 14px/1.5 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;text-align:left;white-space:normal;visibility:hidden;opacity:0;pointer-events:none}
.tb-tooltip::before{content:'';position:absolute;left:0;right:0;top:-11px;height:11px}
.tab-talkbar.tb-open .tb-tooltip{visibility:visible;opacity:1;pointer-events:auto}
.tb-tooltip.tb-tooltip-above{top:auto;bottom:calc(100% + 10px)}
.tb-tooltip-above::before{top:auto;bottom:-11px}
.tb-detail-title{display:block;font-size:18px;line-height:24px;font-weight:650;margin-bottom:18px}
.tb-detail-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 12px;margin-top:16px}
.tb-detail-name{font-weight:600}
.tb-detail-value{white-space:nowrap;font-variant-numeric:tabular-nums}
.tb-detail-track{grid-column:1/-1;display:block;height:16px;border-radius:6px;background:var(--tb-detail-track);overflow:hidden}
.tb-detail-fill{display:block;height:100%;border-radius:6px}
.tb-detail-student{background:var(--accent-fill)}
.tb-detail-teacher{background:var(--text-muted)}
.tb-detail-note{display:block;margin-top:18px;color:var(--text-muted);font-size:12px;line-height:18px}
/* The existing wrapped talk-share layout starts before its PDF collision. */
@media(max-width:1200px){.app .tabs .tab-talkbar{position:relative;left:auto;transform:none;margin:6px 0 0;order:99;flex-basis:100%}.app .tabs{max-width:100%}}
@media(max-width:360px){.tb-tooltip{padding:16px}.tb-detail-row{column-gap:8px}.tb-detail-name,.tb-detail-value{font-size:13px}}
@media(pointer:coarse){.tabs .tab-talkbar{min-height:44px}}

/* Loading uses the same board/tile/detail geometry; only bar shapes differ. */
.lc-loading .lc-tile{cursor:default;pointer-events:none}
.lc-loading .lc-tile:hover{background:var(--lc-panel)}
.lc-loading :is(.lc-tile small,.lc-tile-ru){min-height:20px}
.lc-loading .tl-skeleton{border-radius:5px;max-width:100%}
.lc-loading .lc-sk-topic{width:66%;height:11px;margin-top:4px}
.lc-loading .lc-sk-term{width:80%;height:17px;margin:3px 0 5px}
.lc-loading .lc-sk-gloss{width:58%;height:12px;margin-top:4px}
.lc-loading .lc-sk-heading{min-height:24px;margin-bottom:20px;padding-top:1px}
.lc-loading .lc-sk-line{height:12px;width:100%;margin:5px 0 9px}
.lc-loading .lc-sk-short{width:65%}
.lc-loading .lc-sk-summary{min-width:0}
.lc-loading .lc-sk-illustration{height:40px;width:40px;border-radius:50%}
.lc-loading .lc-sk-audio{height:32px;width:32px;border-radius:50%}
.lc-loading .lc-sk-label{height:10px;width:65%;margin-top:6px}
.lc-loading .lc-sk-quote{min-height:70px}

/* Same central heading and unconstrained content frame for the retention entry. */
.lc-detail .rt-inline-head>h1{margin:0 0 20px;font-size:16px;line-height:24px;font-weight:600;color:var(--lc-text)}