:root{--bg: #0d1117;--bg2: #161b27;--card: #1a2130;--card2: #212a3d;--border: #2c374e;--text: #e6ecf5;--muted: #8b98ad;--accent: #e30a17;--accent-soft: #ff5560;--gold: #f2b134;--green: #3ec97e;--blue: #4da3ff;--radius: 14px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:15px;line-height:1.5}.arabic{font-family:SF Arabic,Geeza Pro,Noto Naskh Arabic,serif;direction:rtl}.app{display:flex;flex-direction:column;height:100%}.topbar{display:flex;align-items:center;gap:16px;padding:10px 20px;background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.logo{font-weight:800;font-size:18px;letter-spacing:.5px}.logo .tr{color:var(--accent-soft)}.topbar .badges{margin-left:auto;display:flex;gap:10px;align-items:center}.badge{background:var(--card2);border:1px solid var(--border);padding:3px 12px;border-radius:99px;font-size:13px;font-weight:600}.badge.cefr{background:var(--accent);border-color:var(--accent);color:#fff}.badge.streak{color:var(--gold)}.tabs{display:flex;gap:4px}.tab{border:none;background:transparent;color:var(--muted);padding:8px 14px;border-radius:10px;cursor:pointer;font-size:14px;font-weight:600;transition:all .15s}.tab:hover{color:var(--text);background:var(--card)}.tab.active{color:#fff;background:var(--accent)}.tab-icon{display:none}.main{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;padding:24px;max-width:1000px;width:100%;margin:0 auto}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px}.card h2{margin:0 0 12px;font-size:17px}.card h3{margin:0 0 8px;font-size:15px;color:var(--muted);font-weight:600}.grid2{display:grid;grid-template-columns:1fr 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12px;font-size:14px;font-family:inherit;outline:none;width:100%}input:focus,textarea:focus,select:focus{border-color:var(--accent-soft)}label.field{display:block;margin-bottom:12px}label.field span{display:block;font-size:13px;color:var(--muted);margin-bottom:5px;font-weight:600}.error-banner{background:#3a1218;border:1px solid #7a2530;color:#ffb4bc;padding:12px 16px;border-radius:10px;margin-bottom:14px;font-size:14px}.notice{background:#12283a;border:1px solid #274b6d;color:#a8d2f5;padding:12px 16px;border-radius:10px;margin-bottom:14px;font-size:14px}.chat-wrap{display:flex;flex-direction:column;flex:1 1 auto;min-height:0}.chat-scroll{flex:1;min-height:0;overflow-y:auto;padding:4px 2px 12px}.msg{max-width:78%;margin-bottom:12px}.msg.user{margin-left:auto}.msg .bubble{padding:12px 16px;border-radius:16px;white-space:pre-wrap;font-size:15px}.msg.user .bubble{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.msg.ai .bubble{background:var(--card2);border:1px solid var(--border);border-bottom-left-radius:4px}.msg .tools{margin-top:4px;display:flex;gap:6px}.chip{display:inline-block;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:12.5px;margin:4px 4px 0 0}.chip.correction{border-color:#7a5325;background:#2b2214;color:#f5d9a8}.chip.word{border-color:#1f5b3f;background:#12291e;color:#a8f5cd;cursor:pointer}.chat-input{display:flex;gap:8px;padding-top:12px;border-top:1px solid var(--border)}.chat-input textarea{resize:none;height:52px}.mic{width:52px;height:52px;min-width:52px;border-radius:50%;border:none;cursor:pointer;background:var(--card2);border:1px solid var(--border);font-size:20px;display:flex;align-items:center;justify-content:center;transition:all .2s}.mic.on{background:var(--accent);border-color:var(--accent);animation:pulse 1.2s infinite}@keyframes pulse{0%,to{box-shadow:0 0 #e30a1780}50%{box-shadow:0 0 0 12px #e30a1700}}.progressbar{height:8px;background:var(--bg2);border-radius:99px;overflow:hidden;margin:10px 0 18px}.progressbar>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--gold));transition:width .3s}.choices{display:grid;gap:10px;margin-top:14px}.choice{text-align:left;background:var(--card2);border:1px solid var(--border);color:var(--text);padding:13px 16px;border-radius:12px;cursor:pointer;font-size:15px;transition:all .12s}.choice:hover:not(:disabled){border-color:var(--accent-soft)}.choice.correct{border-color:var(--green);background:#12291e}.choice.wrong{border-color:var(--accent);background:#33151a}.choice:disabled{cursor:default}.bigprompt{font-size:19px;font-weight:600;margin:6px 0}.feedback{margin-top:14px;padding:12px 16px;border-radius:10px;font-size:14px}.feedback.good{background:#12291e;border:1px solid #1f5b3f;color:#a8f5cd}.feedback.bad{background:#33151a;border:1px solid #7a2530;color:#ffb4bc}.wordbank{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.wordtile{background:var(--card2);border:1px solid var(--border);color:var(--text);padding:8px 14px;border-radius:10px;cursor:pointer;font-size:15px;font-weight:600}.wordtile:disabled{opacity:.3;cursor:default}.wordtile.built{background:var(--accent);border-color:var(--accent);color:#fff}.matchgrid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}.wordtile.sel{border-color:var(--gold);background:#2b2214}.wordtile.done{opacity:.35;border-color:var(--green);cursor:default}.statrow{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}@media(max-width:760px){.statrow{grid-template-columns:repeat(2,1fr)}}.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px}.stat .v{font-size:26px;font-weight:800}.stat .l{font-size:12.5px;color:var(--muted);font-weight:600}.skillbar{margin-bottom:10px}.skillbar .row{justify-content:space-between;margin-bottom:3px}.skillbar .track{height:7px;background:var(--bg2);border-radius:99px;overflow:hidden}.skillbar .fill{height:100%;border-radius:99px;background:var(--blue)}.dict-entry{border-bottom:1px solid var(--border);padding:12px 0}.dict-entry:last-child{border-bottom:none}.flashcard{background:var(--card2);border:1px solid var(--border);border-radius:var(--radius);padding:40px 24px;text-align:center;cursor:pointer;min-height:180px;display:flex;flex-direction:column;justify-content:center;gap:10px}.flashcard .front{font-size:30px;font-weight:800}.gradebtns{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:14px}.review-card{max-width:560px;margin:0 auto}.review-progress{height:6px;background:var(--bg2);border-radius:99px;overflow:hidden;margin:10px 0 4px}.review-progress>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--gold));transition:width .3s}.seg-A1{background:#1f5b3f;color:#a8f5cd}.seg-A2{background:#1c5a55;color:#a4f0e6}.seg-B1{background:#234e7a;color:#b6d8ff}.seg-B2{background:#6a5320;color:#f5d9a8}.seg-C1{background:#7a4423;color:#ffd0ab}.seg-C2{background:#7a2530;color:#ffb4bc}.seg-unrated{background:var(--card2);color:var(--muted)}.deck-hero-top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.deck-stats{display:flex;gap:22px}.deck-stat{display:flex;flex-direction:column;line-height:1.15}.deck-stat .v{font-size:28px;font-weight:800}.deck-stat .l{font-size:12px;color:var(--muted);font-weight:600}.review-btn{white-space:nowrap}.cefr-bar{display:flex;gap:2px;margin-top:16px;height:22px;border-radius:7px;overflow:hidden}.cefr-seg{min-width:4px;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;overflow:hidden}.deck-toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:14px}.deck-search{max-width:260px}.filter-chips{display:flex;gap:6px;flex-wrap:wrap}.fchip{border:1px solid var(--border);background:var(--card2);color:var(--muted);padding:5px 12px;border-radius:99px;font-size:12.5px;font-weight:700;cursor:pointer;transition:all .12s}.fchip:hover{color:var(--text)}.fchip.on{background:var(--accent);border-color:var(--accent);color:#fff}.empty-deck{padding:26px 8px;text-align:center;line-height:1.6}.word-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:12px}.word-card{text-align:left;background:var(--card2);border:1px solid var(--border);border-radius:12px;padding:13px 14px;cursor:pointer;color:var(--text);display:flex;flex-direction:column;gap:7px;transition:border-color .12s,transform .1s}.word-card:hover{border-color:var(--accent-soft);transform:translateY(-2px)}.wc-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.wc-word{font-size:17px;font-weight:800;letter-spacing:.2px}.wc-cefr{font-size:10.5px;font-weight:800;padding:2px 7px;border-radius:99px}.wc-meaning{font-size:13px;color:var(--muted);line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:34px}.wc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:2px}.wc-due{font-size:11px;font-weight:700;color:var(--muted)}.wc-due.now{color:var(--gold)}.wc-chat{font-size:11px;font-weight:700;color:var(--blue);opacity:0;transition:opacity .12s}.word-card:hover .wc-chat{opacity:1}.pill{display:inline-flex;align-items:center;gap:4px;background:var(--card2);border:1px solid var(--border);border-radius:99px;padding:3px 10px;font-size:12px;font-weight:700;color:var(--muted)}.pill.ok{border-color:#1f5b3f;background:#12291e;color:#a8f5cd}.drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:#00000080;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;justify-content:flex-end;animation:fade .15s ease}@keyframes fade{0%{opacity:0}to{opacity:1}}.drawer{width:min(460px,100%);height:100%;background:var(--bg2);border-left:1px solid var(--border);display:flex;flex-direction:column;animation:slidein .2s ease}@keyframes slidein{0%{transform:translate(24px);opacity:.4}to{transform:translate(0);opacity:1}}.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:16px 18px;border-bottom:1px solid var(--border)}.word-title{margin:0;font-size:24px;font-weight:800}.cefr-badge{background:var(--accent);border-color:var(--accent);color:#fff}.btn.icon{padding:6px 10px}.drawer-body{flex:1;min-height:0;display:flex;flex-direction:column;padding:16px 18px}.word-facts{padding-bottom:14px;border-bottom:1px solid var(--border)}.fact-en{font-size:15px;margin-top:4px}.fact-ar{font-size:16px;margin-top:2px}.fact-ex{color:var(--muted);font-size:13.5px;margin-top:6px;font-style:italic}.word-chat-head{font-size:13px;color:var(--muted);font-weight:600;margin:14px 0 8px}.word-chat-scroll{flex:1;min-height:80px;overflow-y:auto;padding:2px}.chat-empty{padding:16px 4px;line-height:1.5}.word-chat-scroll .msg{max-width:92%}.word-chat-scroll .msg.ai .bubble{font-size:14px}.rich-line{min-height:6px}.rich-line:empty{min-height:8px}.rich-bullet{display:flex;gap:7px;margin:3px 0}.rich-dot{color:var(--accent-soft)}.word-suggest{display:flex;gap:6px;flex-wrap:wrap;padding:10px 0 6px}.word-suggest .btn{font-size:12px;padding:6px 10px}.drawer-body .chat-input{border-top:none;padding-top:8px}.drawer-body .chat-input textarea{height:46px}.audio-pill{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;align-items:center;gap:4px;background:var(--card2);border:1px solid var(--border);border-radius:99px;padding:6px 10px;box-shadow:0 6px 24px #00000073;animation:fade .15s ease}.audio-btn{border:none;background:transparent;color:var(--text);cursor:pointer;font-size:16px;line-height:1;padding:6px 8px;border-radius:99px}.audio-btn:hover{background:var(--card)}.audio-btn.stop{color:var(--accent-soft)}.audio-eq{display:flex;align-items:flex-end;gap:2px;height:14px;margin:0 2px 0 4px}.audio-eq i{width:3px;background:var(--gold);border-radius:2px;animation:eq 1s ease-in-out infinite}.audio-eq i:nth-child(1){height:60%;animation-delay:0s}.audio-eq i:nth-child(2){height:100%;animation-delay:.2s}.audio-eq i:nth-child(3){height:75%;animation-delay:.4s}.audio-eq.paused i{animation-play-state:paused;opacity:.5}@keyframes eq{0%,to{transform:scaleY(.5)}50%{transform:scaleY(1)}}.spinner{width:22px;height:22px;border:3px solid var(--border);border-top-color:var(--accent-soft);border-radius:50%;animation:spin .8s linear infinite;display:inline-block;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.center{text-align:center;padding:40px 0}@media(max-width:760px){input,textarea,select{font-size:16px}.topbar{gap:8px;padding:10px 14px}.logo{font-size:16px}.topbar .badges{gap:6px}.badge{padding:3px 9px;font-size:12px}.main{padding:14px 14px calc(70px + env(safe-area-inset-bottom))}.tabs{position:fixed;left:0;right:0;bottom:0;z-index:30;gap:0;justify-content:space-around;background:color-mix(in srgb,var(--bg2) 92%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid var(--border);padding:5px 2px calc(5px + env(safe-area-inset-bottom))}.tab{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;gap:3px;padding:5px 2px;border-radius:8px;font-size:10px;font-weight:600}.tab:hover{background:transparent}.tab.active{background:transparent;color:var(--accent-soft)}.tab-icon{display:block;font-size:20px;line-height:1;opacity:.7}.tab.active .tab-icon{opacity:1}.tab-label{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.msg{max-width:88%}.card{padding:16px}.card h2{font-size:16px}.gradebtns{gap:6px}.btn.sm{padding:8px 12px}.flashcard{padding:32px 18px}.drawer{width:100%;border-left:none}.drawer-body{padding:14px}.word-title{font-size:21px}.word-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}.wc-chat{opacity:1}.deck-stats{gap:16px}.deck-stat .v{font-size:24px}.audio-pill{right:12px;bottom:calc(74px + env(safe-area-inset-bottom))}}