/* v100 library: home shelves, filter, search, vocabulary books + study cards. Colours come from brand.css variables (light/dark). */
.lbx-head h1{margin:0 0 4px;font-size:24px}.lbx-head p{margin:0 0 14px}
.lbx-page{padding-top:22px;padding-bottom:40px}
.lbx-top{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.lbx-search{flex:1;min-width:220px;display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--border-strong,var(--border));border-radius:14px;padding:0 12px}
.lbx-search svg{width:18px;height:18px;opacity:.6;flex:none}
.lbx-search input{flex:1;border:0;background:transparent;color:var(--text);padding:12px 0;font:inherit;font-size:15px;outline:none;min-width:0}
.lbx-search:focus-within{border-color:var(--track,var(--accent));box-shadow:0 0 0 3px var(--track-soft)}
.lbx-mine{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);border-radius:12px;white-space:nowrap}.lbx-mine svg{width:16px;height:16px}
.lbx-filters{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:16px}
.lbx-fl{font-size:13px;color:var(--muted);margin-inline-end:2px}.lbx-fl2{margin-inline-start:10px}
.lbx-chip{border:1px solid var(--border);background:var(--surface);color:var(--text-2);border-radius:999px;padding:5px 12px;font:inherit;font-size:13px;font-weight:600;cursor:pointer;min-height:32px}
.lbx-chip.on{background:var(--track-ink,var(--indigo-ink));border-color:var(--track-ink,var(--indigo-ink));color:#fff}
.lbx-chip:focus-visible,.lbx-save:focus-visible,.lbx-more:focus-visible{outline:2px solid var(--track,var(--accent));outline-offset:2px}
.lbx-guest{margin-bottom:16px}
.lbx-shelf{margin:0 0 26px}
.lbx-shelf>header{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:8px}
.lbx-shelf h2{font-size:18px;margin:0}.lbx-shelf h2 small{font-size:13px;font-weight:500}
.lbx-sub{margin:-4px 0 8px}
.lbx-more{background:none;border:0;color:var(--track-ink,var(--indigo-ink));font:inherit;font-size:13px;font-weight:700;cursor:pointer;padding:4px}
.lbx-row{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(230px,260px);gap:12px;overflow-x:auto;padding:2px 2px 8px;scroll-snap-type:x proximity;overscroll-behavior-x:contain}
.lbx-row>*{scroll-snap-align:start}
.lbx-card.lbx-x{display:none}
.lbx-all .lbx-row{grid-auto-flow:row;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));grid-auto-columns:auto;overflow:visible}
.lbx-all .lbx-card.lbx-x{display:flex}.lbx-all .lbx-card.lbx-x[hidden],.lbx-card[hidden]{display:none}
.lbx-card{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden;min-height:100%}
.lbx-card:hover{box-shadow:var(--shadow-lg,0 6px 20px rgba(0,0,0,.08))}
.lbx-cover{position:relative;display:flex;align-items:center;justify-content:space-between;height:74px;padding:0 14px;text-decoration:none;color:#fff;background:var(--teal-600,#0d7c74)}
.lbx-cover .lbx-ic svg{width:30px;height:30px;opacity:.95}
.lbx-lv{font-weight:800;font-size:15px;background:rgba(255,255,255,.22);border-radius:8px;padding:2px 8px}
.lbx-done{position:absolute;inset-inline-start:10px;bottom:6px;font-size:12px;font-weight:800;background:rgba(0,0,0,.25);border-radius:6px;padding:0 6px}
.lbx-k-pod{background:#2f6f9f}.lbx-k-audiobook{background:#6b4fa0}.lbx-k-story{background:#9a5a2c}.lbx-k-mag{background:#4d7a3a}
.lbx-k-book{background:#0d7c74}.lbx-k-course{background:#35558a}.lbx-k-experience{background:#b0573a}.lbx-k-song{background:#a03f63}.lbx-k-official{background:#5b6470}
.lbx-body{display:flex;flex-direction:column;gap:3px;padding:10px 14px 14px;flex:1}
.lbx-t{font-weight:700;color:var(--text);text-decoration:none;line-height:1.6}.lbx-t:hover{text-decoration:underline}
.lbx-de{color:var(--text-2);text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lbx-desc{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lbx-lock{color:var(--warn,#a86b00);font-weight:600}
.lbx-bar{display:block;height:6px;background:var(--surface-2);border-radius:99px;overflow:hidden;margin-top:6px}.lbx-bar>i{display:block;height:100%;background:var(--ok,#2e8b57);border-radius:99px}
.lbx-save{position:absolute;top:8px;inset-inline-start:8px;width:34px;height:34px;border-radius:50%;border:0;background:rgba(0,0,0,.18);color:#fff;cursor:pointer;display:grid;place-items:center}
.lbx-save svg{width:17px;height:17px}.lbx-save.on{background:#f5b400;color:#3a2a00}
.lbx-cover .lbx-ic{margin-inline-start:34px}
.lbx-cont .lbx-row{grid-auto-columns:minmax(230px,280px)}
.lbx-mini{display:flex;gap:10px;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:10px 12px;text-decoration:none;color:var(--text)}
.lbx-mini .lbx-ic svg{width:22px;height:22px;color:var(--track-ink,var(--indigo-ink))}.lbx-mini>span:last-child{flex:1;display:flex;flex-direction:column;min-width:0}
.lbx-mini b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lbx-nothing{padding:20px;text-align:center;color:var(--muted)}
.lbx-results{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:12px 14px;margin-bottom:18px}
.lbx-res-h{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.lbx-words{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px}
.lbx-w{display:flex;flex-direction:column;gap:2px;border:1px solid var(--border);border-radius:12px;padding:8px 10px;text-decoration:none;color:var(--text)}
.lbx-w:hover{border-color:var(--track,var(--accent))}.lbx-w b{text-align:left}.lbx-w small{color:var(--muted);text-align:left}
.lbx-art{font-weight:800}.lbx-der{color:var(--gder,#2563eb)}.lbx-die{color:var(--gdie,#dc2626)}.lbx-das{color:var(--gdas,#16a34a)}

/* ---------- book page ---------- */
.lbx-crumb{font-size:13px;color:var(--muted);margin-bottom:10px}.lbx-crumb a{color:inherit}
.lbx-bhead{display:flex;gap:16px;align-items:stretch;flex-wrap:wrap;margin-bottom:16px}
.lbx-bcover{width:120px;min-height:150px;border-radius:14px;display:flex;flex-direction:column;justify-content:space-between;padding:12px;color:#fff;background:#0d7c74;flex:none}
.lbx-bcover b{font-size:26px}.lbx-bcover span{font-size:13px;opacity:.9}
.lbx-binfo{flex:1;min-width:240px}.lbx-binfo h1{margin:0 0 2px;font-size:22px}
.lbx-facts{display:flex;flex-wrap:wrap;gap:6px 14px;margin:8px 0;font-size:14px;color:var(--text-2)}
.lbx-src{font-size:12.5px;color:var(--muted);line-height:1.9}
.lbx-acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.lbx-lessons{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.lbx-ls{display:flex;flex-direction:column;gap:2px;border:1px solid var(--border);background:var(--surface);border-radius:14px;padding:10px 12px;text-decoration:none;color:var(--text)}
.lbx-ls b{font-size:14px}.lbx-ls small{color:var(--muted)}.lbx-ls .ltr{text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lbx-ls.done{border-color:var(--ok,#2e8b57)}.lbx-ls.next{box-shadow:0 0 0 2px var(--track,var(--accent))}.lbx-ls.locked{opacity:.6}

/* ---------- study view ---------- */
.lbx-study-h{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.lbx-study-h h1{font-size:19px;margin:0}
.lbx-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;position:sticky;top:0;z-index:5;background:var(--bg);padding:8px 0}
.lbx-tools input{border:1px solid var(--border);border-radius:10px;padding:7px 10px;background:var(--surface);color:var(--text);font:inherit;min-width:0;flex:1;max-width:240px}
.lbx-cards{display:flex;flex-direction:column;gap:12px;margin-top:6px}
.lbx-wc{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:14px 16px;scroll-margin-top:70px}
.lbx-wc.learned{border-color:var(--ok,#2e8b57)}
.lbx-wc.hit{box-shadow:0 0 0 3px var(--track-soft)}
.lbx-wtop{display:flex;align-items:center;gap:10px;flex-wrap:wrap;direction:ltr;justify-content:flex-end}
.lbx-lemma{font-size:22px;font-weight:800;direction:ltr}
.lbx-meta{direction:ltr;color:var(--text-2);font-size:13.5px}
.lbx-pos{font-size:12px;background:var(--surface-2);border-radius:6px;padding:1px 7px;color:var(--text-2)}
.lbx-goethe{font-size:11.5px;background:var(--indigo-2);color:var(--indigo-ink);border-radius:6px;padding:1px 7px}
.lbx-play{border:1px solid var(--border);background:var(--surface-2);color:var(--text);border-radius:999px;min-width:36px;height:36px;cursor:pointer;font-size:15px}
.lbx-play[disabled]{opacity:.35;cursor:default}
.lbx-reveal{margin-top:10px}
.lbx-mean{margin-top:10px;padding:10px 12px;border-radius:12px;background:var(--surface-2)}
.lbx-mean .fa{font-size:17px;font-weight:700}.lbx-mean .de{direction:ltr;text-align:left;color:var(--text-2);font-size:14px;margin-top:4px}
.lbx-ex{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.lbx-ex li{display:flex;gap:8px;align-items:flex-start}
.lbx-ex .s{flex:1;min-width:0}.lbx-ex .s .de{direction:ltr;text-align:left;line-height:1.7}.lbx-ex .s .tr{font-size:13.5px;color:var(--text-2)}.lbx-ex .s .tr.en{direction:ltr;text-align:left}
.lbx-ex .s .by{font-size:11.5px;color:var(--muted);direction:ltr;text-align:left}.lbx-ex .s .by a{color:inherit}
.lbx-ex mark{background:#fff3b0;color:#202327;border-radius:3px;padding:0 2px}
.lbx-wact{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.lbx-wact button,.lbx-wact a{font-size:13.5px}
.lbx-learn.on{background:var(--ok,#2e8b57);color:#fff;border-color:var(--ok,#2e8b57)}
.lbx-pager{display:flex;justify-content:space-between;gap:10px;margin-top:18px}
.lbx-meter{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}.lbx-meter .lbx-bar{width:140px;margin:0}
@media (max-width:560px){.lbx-tools input{flex-basis:100%;order:9}.lbx-row{grid-auto-columns:78%}.lbx-lemma{font-size:20px}.lbx-bcover{width:96px;min-height:120px}.lbx-tools input{max-width:none}}

/* ---------- v101 player / reader ---------- */
.lbx-desc2{margin:6px 0;line-height:1.9;color:var(--text-2);font-size:14.5px}
.lbx-player{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:12px 14px;position:sticky;top:0;z-index:6;box-shadow:0 6px 16px -14px rgba(0,0,0,.4)}
.lbx-pl-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.lbx-pp{width:46px;height:46px;border-radius:50%;border:0;background:var(--track-ink,var(--indigo-ink));color:#fff;font-size:17px;cursor:pointer}
.lbx-sk{min-width:42px;height:36px;border-radius:10px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);cursor:pointer;font:inherit;font-size:13px;font-weight:700}
.lbx-time{font-size:13.5px;color:var(--text-2);margin-inline-start:4px}
.lbx-spd{margin-inline-start:auto;font-size:13px;color:var(--text-2)}.lbx-spd select{border:1px solid var(--border);border-radius:8px;padding:4px;background:var(--surface);color:var(--text);font:inherit}
.lbx-seek{width:100%;margin:10px 0 6px;accent-color:var(--track-ink,var(--indigo-ink))}
.lbx-pl-opts{font-size:13px;color:var(--text-2);gap:14px}.lbx-pl-opts label{display:inline-flex;align-items:center;gap:5px;cursor:pointer}
.lbx-bgs{display:inline-flex;gap:6px;margin-inline-start:auto}.lbx-bgs button{width:22px;height:22px;border-radius:50%;border:1px solid var(--border-strong,var(--border));cursor:pointer;background:#fff}
.lbx-bgs button[data-bg=sepia]{background:#f4ecd8}.lbx-bgs button[data-bg=dark]{background:#22262b}.lbx-bgs button.on{box-shadow:0 0 0 2px var(--track,var(--accent))}
.lbx-tx{margin-top:12px;max-height:62vh;overflow:auto;border:1px solid var(--border);border-radius:16px;padding:14px 18px;font-size:18px;line-height:2;text-align:left;background:var(--surface);color:var(--text)}
.lbx-tx p{margin:0 0 12px}.lbx-bg-sepia{background:#f4ecd8;color:#3b2f1e}.lbx-bg-dark{background:#22262b;color:#e8e8e8}
.lbx-sg{cursor:pointer;border-radius:4px;padding:1px 1px;transition:background .15s}@media (hover:hover){.lbx-sg:hover{background:rgba(127,127,127,.12)}}
.lbx-sg.on{background:#fff3b0;color:#202327}
.lbx-lyrics{white-space:normal;max-height:none}
.lbx-qnav{display:flex;justify-content:space-between;gap:10px;margin-top:14px;flex-wrap:wrap}
.lbx-reader .lbx-rhead{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.lbx-text{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:18px 22px;line-height:2;text-align:left}
.lbx-text p{margin:0 0 14px}
.lbx-pop{position:absolute;z-index:80;display:flex;gap:6px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:var(--shadow-lg,0 8px 24px rgba(0,0,0,.18))}
.lbx-pop[hidden]{display:none}
@media (max-width:560px){.lbx-tx{font-size:16.5px;padding:12px;max-height:none;overflow:visible}.lbx-player{padding:8px 10px;top:0}.lbx-pp{width:40px;height:40px}.lbx-sk{min-width:38px;height:32px}.lbx-seek{margin:6px 0 4px}.lbx-pl-opts{gap:10px;font-size:12.5px}.lbx-bgs button{width:18px;height:18px}.lbx-text{padding:14px;font-size:16.5px}.lbx-spd{margin-inline-start:0}}

/* ---------- v102 exam experiences ---------- */
.lbx-exhead{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}
.lbx-exlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:10px}
.lbx-excard{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px;text-decoration:none;color:var(--text)}
.lbx-excard:hover{border-color:var(--track,var(--accent))}
.lbx-exbadge{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:64px;height:64px;border-radius:12px;background:#b0573a;color:#fff;font-size:13px}
.lbx-exbadge span{font-weight:800;font-size:17px}
.lbx-exbody{display:flex;flex-direction:column;gap:3px;min-width:0}
.lbx-tabs{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0 10px}
.lbx-mineexp{margin:0 0 14px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:10px 14px}.lbx-mineexp summary{cursor:pointer;font-weight:700}
.lbx-exform .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.lbx-exform .full{grid-column:1/-1}
.lbx-exform .field{display:flex;flex-direction:column;gap:4px}.lbx-exform input:not([type=checkbox]),.lbx-exform select,.lbx-exform textarea{border:1px solid var(--border);border-radius:10px;padding:8px 10px;background:var(--surface);color:var(--text);font:inherit}
.lbx-official{margin-bottom:12px}
@media (max-width:560px){.lbx-exform .form-grid{grid-template-columns:1fr}}