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.chat-input-field{background:none;border:none;color:var(--text-primary);flex:1 1;font-size:14px;min-width:0;outline:none;padding:6px 2px}.chat-send-circle{align-items:center;background:var(--brand);border:none;border-radius:50%;box-shadow:0 2px 8px var(--brand-glow);color:#fff;cursor:pointer;display:flex;flex-shrink:0;font-size:16px;height:42px;justify-content:center;transition:transform .12s;width:42px}.chat-send-circle:hover{transform:scale(1.06)}.chat-send-circle:disabled{box-shadow:none;cursor:default;opacity:.55}.chat-attach{display:inline-flex;position:relative}.chat-attach-menu{background:var(--bg-elevated);border:1px solid var(--border);border-radius:12px;bottom:46px;box-shadow:var(--shadow-md);min-width:170px;overflow:hidden;padding:6px;position:absolute;right:0;z-index:60}.chat-attach-menu button{align-items:center;background:none;border:none;border-radius:8px;color:var(--text-primary);cursor:pointer;display:flex;font-size:14px;font-weight:600;gap:11px;padding:10px 12px;text-align:left;width:100%}.chat-attach-menu button:hover{background:var(--bg-hover)}.chat-attach-menu button svg{color:var(--brand);font-size:16px}button.chat-friend-btn--pending{cursor:pointer}button.chat-friend-btn--pending:hover{border-color:var(--error);color:var(--error)}.chat-grp-form{display:flex;gap:6px;margin:6px 10px}.chat-grp-form input{border:1px solid #e3e6ee;border:1px solid var(--border,#e3e6ee);border-radius:8px;flex:1 1;font-size:13px;min-width:0;padding:7px 9px}.chat-grp-form button{background:#f97316;border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:13px;font-weight:600;padding:7px 12px}.chat-grp-banner{align-items:center;background:#f973161a;border-bottom:1px solid #fed7aa;display:flex;font-size:14px;font-weight:700;justify-content:space-between;padding:8px 12px}.chat-grp-banner__actions{display:flex;gap:6px}.chat-grp-banner__actions button{background:#0000;border:none;color:#c2410c;cursor:pointer;font-weight:600;padding:2px 6px}.nc-wrap{bottom:84px;position:fixed;right:24px;z-index:200}.nc-bell{align-items:center;background:var(--bg-elevated);border:1px solid var(--border);border-radius:50%;box-shadow:0 2px 8px #0000002e;box-shadow:var(--shadow-md,0 2px 8px #0000002e);cursor:pointer;display:flex;font-size:20px;height:48px;justify-content:center;position:relative;width:48px}.nc-bell.has-unread{animation:nc-pulse 2s ease-in-out infinite}@keyframes nc-pulse{0%,to{box-shadow:0 0 0 0 #7c3aed00}50%{box-shadow:0 0 0 6px #7c3aed2e}}.nc-badge{align-items:center;background:#ef4444;background:var(--error,#ef4444);border-radius:999px;color:#fff;display:flex;font-size:11px;font-weight:800;height:18px;justify-content:center;min-width:18px;padding:0 4px;position:absolute;right:-3px;top:-3px}.nc-panel{animation:nc-in .12s ease;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--r-lg);bottom:58px;box-shadow:var(--shadow-lg);max-width:86vw;overflow:hidden;position:absolute;right:0;width:320px}@keyframes nc-in{0%{opacity:0;transform:translateY(8px)}}.nc-head{border-bottom:1px solid var(--border);color:var(--text-primary);font-size:14px;font-weight:800;padding:11px 14px}.nc-list{max-height:60vh;overflow-y:auto}.nc-empty{color:var(--text-tertiary);font-size:13px;padding:22px 16px;text-align:center}.nc-item{align-items:center;border-bottom:1px solid var(--border);display:flex;gap:10px;padding:10px 14px}.nc-item.is-unread{background:#7c3aed12;background:var(--brand-dim,#7c3aed12)}.nc-item.is-unread .nc-text{font-weight:700}.nc-ico{flex-shrink:0;font-size:18px}.nc-text{color:var(--text-primary);flex:1 1;font-size:13px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nc-time{flex-shrink:0}.nc-foot,.nc-time{color:var(--text-tertiary);font-size:11px}.nc-foot{border-top:1px solid var(--border);padding:8px 14px;text-align:center}.lobby-overlay{align-items:center;animation:lobby-fade .15s ease;background:#000000c7;display:flex;inset:0;justify-content:center;padding:20px;position:fixed;z-index:1000}@keyframes lobby-fade{0%{opacity:0}to{opacity:1}}.lobby-card{animation:lobby-in .2s cubic-bezier(.16,1,.3,1);background:var(--bg-elevated);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-lg);max-height:90vh;max-width:460px;overflow-y:auto;padding:26px 24px;position:relative;width:100%}@keyframes lobby-in{0%{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}.lobby-back{background:#0000;border:1px solid var(--border);border-radius:7px;color:var(--text-secondary);cursor:pointer;font-size:13px;font-weight:500;padding:6px 12px;transition:border-color .13s,color .13s}.lobby-back:hover{border-color:var(--border-focus);color:var(--text-primary)}.lobby-rating-badge{align-items:center;background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;display:inline-flex;gap:6px;padding:6px 12px;position:absolute;right:24px;top:24px}.lobby-rating-icon{color:var(--brand);font-size:14px}.lobby-rating-value{color:var(--text-primary);font-family:var(--font-mono);font-size:15px;font-weight:700}.lobby-rating-label,.lobby-step-label{color:var(--text-tertiary);font-size:11px}.lobby-step-label{font-weight:700;letter-spacing:.8px;margin-top:18px;text-transform:uppercase}.lobby-exam-chip{background:var(--brand-dim);border:1px solid var(--border-brand);border-radius:6px;color:var(--brand);display:inline-block;font-size:12px;font-weight:700;margin-top:8px;padding:4px 11px}.lobby-title{color:var(--text-primary);font-size:24px;font-weight:800;letter-spacing:-.5px;margin:12px 0 4px}.lobby-subtitle{color:var(--text-secondary);font-size:13px;line-height:1.5;margin:0 0 20px}.lobby-subjects{grid-gap:8px;display:grid;gap:8px;grid-template-columns:repeat(2,1fr)}.lobby-subject-btn{align-items:flex-start;background:var(--bg-surface);border:1px solid var(--border);border-radius:11px;color:var(--text-primary);cursor:pointer;display:flex;flex-direction:column;gap:3px;padding:14px;text-align:left;transition:border-color .13s,background .13s,transform .1s}.lobby-subject-btn:hover{background:var(--bg-hover);border-color:var(--border-brand)}.lobby-subject-btn:active{transform:scale(.99)}.subj-icon{font-size:22px}.subj-name{color:var(--text-primary);font-size:14px;font-weight:700}.subj-desc{color:var(--text-tertiary);font-size:11px;line-height:1.3}.subj-count{background:var(--brand-dim);border-radius:4px;color:var(--brand);font-family:var(--font-mono);font-size:11px;font-weight:600;margin-top:4px;padding:2px 7px}.lobby-chosen-subject{background:var(--bg-surface);border:1px solid var(--border);border-radius:8px;color:var(--text-secondary);display:inline-block;font-size:13px;font-weight:600;margin-bottom:16px;padding:8px 14px}.lobby-modes{grid-gap:8px;display:grid;gap:8px;grid-template-columns:repeat(2,1fr)}.lobby-mode-btn{align-items:center;background:var(--bg-surface);border:1px solid var(--border);border-radius:11px;color:var(--text-primary);cursor:pointer;display:flex;flex-direction:column;gap:5px;padding:18px 14px;transition:border-color .13s,background .13s,transform .1s}.lobby-mode-btn:hover{background:var(--bg-hover);border-color:var(--border-brand)}.lobby-mode-btn:active{transform:scale(.99)}.mode-icon{font-size:26px}.mode-name{font-size:14px;font-weight:700}.mode-time{background:var(--brand-dim);border-radius:4px;color:var(--brand);font-family:var(--font-mono);font-size:12px;font-weight:600;padding:2px 8px}.lobby-searching{align-items:center;display:flex;flex-direction:column;gap:10px;padding:24px 0 8px;text-align:center}.lobby-spinner{height:72px;margin-bottom:8px;position:relative;width:72px}.spinner-ring{animation:lobby-spin 1.1s linear infinite;border:3px solid #0000;border-radius:50%;border-top:3px solid var(--brand);inset:0;position:absolute}.spinner-ring--2{animation-direction:reverse;animation-duration:1.5s;border-top-color:var(--brand-dark);inset:9px}.spinner-ring--3{animation-duration:1.9s;border-top-color:var(--text-tertiary);inset:18px}@keyframes lobby-spin{to{transform:rotate(1turn)}}.lobby-status{color:var(--text-secondary);font-size:14px;margin:0}.lobby-timer{color:var(--text-tertiary);font-family:var(--font-mono);font-size:12px;margin:0}.lobby-match-meta{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:8px}.lobby-meta-pill{background:var(--bg-surface);border:1px solid var(--border);border-radius:50px;color:var(--text-secondary);font-size:12px;font-weight:600;padding:5px 12px}.lobby-meta-pill--mode{background:var(--brand-dim);border-color:var(--border-brand);color:var(--brand)}.lobby-found{align-items:center;display:flex;flex-direction:column;gap:8px;padding:28px 0;text-align:center}.found-icon{animation:found-pop .3s cubic-bezier(.16,1,.3,1);font-size:48px}@keyframes found-pop{0%{opacity:0;transform:scale(.4)}to{opacity:1;transform:scale(1)}}@media (max-width:440px){.lobby-subjects{grid-template-columns:1fr}}.rv-overlay{align-items:center;background:#0000008c;display:flex;inset:0;justify-content:center;padding:max(16px,env(safe-area-inset-top)) 16px max(16px,env(safe-area-inset-bottom));position:fixed;z-index:1000}.rv-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);max-height:92vh;max-width:480px;overflow-y:auto;padding:18px;width:100%}.rv-top{align-items:center;display:flex;justify-content:space-between;margin-bottom:10px}.rv-title{color:var(--text-primary);font-size:16px;font-weight:800}.rv-x{background:none;border:none;color:var(--text-tertiary);cursor:pointer;font-size:18px}.rv-track{background:var(--bg-surface);border-radius:999px;height:6px;overflow:hidden}.rv-fill{background:var(--success);background:var(--brand-primary,var(--success));height:100%;transition:width .3s ease}.rv-meta{color:var(--text-secondary);font-size:13px;margin:8px 0 12px}.rv-meta b{color:var(--text-primary)}.rv-tag{background:var(--bg-surface);border-radius:999px;color:var(--text-secondary);display:inline-block;font-size:11px;font-weight:700;margin-bottom:8px;padding:2px 8px}.rv-q{color:var(--text-primary);font-size:15px;font-weight:600;line-height:1.45;margin:0 0 12px}.rv-opts{flex-direction:column}.rv-opt,.rv-opts{display:flex;gap:8px}.rv-opt{align-items:center;border:1px solid var(--border);border-radius:var(--r-md);color:var(--text-primary);font-size:14px;padding:9px 12px}.rv-opt b{color:var(--text-tertiary)}.rv-opt span{flex:1 1}.rv-opt.is-correct{background:var(--success-dim);border-color:var(--success)}.rv-opt.is-wrong{background:#ff00000f;background:var(--error-dim,#ff00000f);border-color:var(--error)}.rv-mark{font-size:11px;font-style:normal;font-weight:700;white-space:nowrap}.rv-opt.is-correct .rv-mark{color:var(--success)}.rv-opt.is-wrong .rv-mark{color:var(--error)}.rv-verdict{font-size:14px;font-weight:700;margin:12px 0;text-align:center}.rv-verdict.ok{color:var(--success)}.rv-verdict.no{color:var(--error)}.rv-ctrls{display:flex;gap:8px;justify-content:space-between}.rv-btn{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--r-md);color:var(--text-primary);cursor:pointer;flex:1 1;font-size:14px;font-weight:600;padding:10px}.rv-btn:disabled{cursor:default;opacity:.45}.rv-play{background:var(--success);background:var(--brand-primary,var(--success));border-color:#0000;color:#fff}.rv-empty{color:var(--text-secondary);margin:12px 0 16px;text-align:center}.arena-loading{align-items:center;background:#0a0a0b;background:var(--bg-base,#0a0a0b);color:var(--text-tertiary);display:flex;flex-direction:column;font-size:14px;gap:14px;justify-content:center;min-height:100vh}.arena-loading-spinner{animation:arena-spin .8s linear infinite;border:2px solid var(--border);border-radius:50%;border-top-color:var(--brand);height:36px;width:36px}@keyframes arena-spin{to{transform:rotate(1turn)}}.arena-page{background:var(--bg-base);flex-direction:column;min-height:100vh;padding:0 16px 48px}.arena-header,.arena-page{align-items:center;display:flex}.arena-header{gap:12px;justify-content:space-between;max-width:680px;padding:18px 0 14px;width:100%}.arena-player{align-items:center;display:flex;flex:1 1;gap:10px}.arena-player--opp{flex-direction:row-reverse}.arena-avatar{background:var(--bg-elevated);border:1px solid var(--border);border-radius:50%;height:38px;object-fit:cover;width:38px}.arena-player-info{display:flex;flex-direction:column;gap:2px}.arena-player-info--right{text-align:right}.arena-player-name{color:var(--text-primary);font-size:13px;font-weight:600}.arena-player-rating{color:var(--text-tertiary);font-family:var(--font-mono);font-size:11px}.arena-timer-block{align-items:center;display:flex;flex-shrink:0;height:54px;justify-content:center;position:relative;width:54px}.timer-ring{height:54px;position:absolute;width:54px}.timer-seconds{font-family:var(--font-mono);font-size:15px;font-weight:600;position:relative;z-index:1}.arena-subject-bar{align-items:center;border-bottom:1px solid var(--border);display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;margin-bottom:16px;max-width:680px;padding:10px 0 14px;width:100%}.arena-subject-badge{align-items:center;background:var(--bg-elevated);border:1px solid var(--border);border-radius:6px;color:var(--text-secondary);display:inline-flex;font-size:12px;font-weight:600;gap:6px;padding:4px 12px}.arena-progress-text{color:var(--text-tertiary);font-family:var(--font-mono);font-size:12px}.arena-question-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:12px;display:flex;flex-direction:column;gap:14px;max-width:680px;padding:22px;width:100%}.arena-question-text{color:var(--text-primary);font-size:16px;font-weight:500;line-height:1.65;margin:0}.arena-question-image{background:#fff;border:1px solid var(--border);border-radius:8px;max-height:220px;max-width:100%;padding:6px}.arena-options{display:flex;flex-direction:column;gap:8px}.arena-option{align-items:center;background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;color:var(--text-primary);cursor:pointer;display:flex;font-size:14px;font-weight:500;gap:12px;padding:12px 14px;text-align:left;transition:border-color .12s,background .12s}.arena-option:hover:not(:disabled){background:var(--bg-hover);border-color:var(--border-focus)}.arena-option:disabled{cursor:not-allowed}.option-letter{align-items:center;background:var(--bg-elevated);border:1px solid var(--border);border-radius:6px;color:var(--text-tertiary);display:flex;flex-shrink:0;font-family:var(--font-mono);font-size:11px;font-weight:600;height:26px;justify-content:center;width:26px}.arena-option.option-correct{background:var(--success-dim);border-color:var(--success)}.arena-option.option-correct .option-letter{background:var(--success);border-color:var(--success);color:#fff}.arena-option.option-wrong{background:var(--error-dim);border-color:var(--error)}.arena-option.option-wrong .option-letter{background:var(--error);border-color:var(--error);color:#fff}.arena-skip-btn{align-self:flex-start;background:#0000;border:1px solid var(--border);border-radius:6px;color:var(--text-tertiary);cursor:pointer;font-size:12px;font-weight:600;padding:7px 14px;transition:border-color .12s,color .12s}.arena-skip-btn:hover:not(:disabled){border-color:var(--border-focus);color:var(--text-secondary)}.arena-skip-btn:disabled{cursor:not-allowed;opacity:.4}.arena-all-done{align-items:center;background:var(--bg-elevated);border:1px solid var(--border);border-radius:12px;display:flex;flex-direction:column;gap:10px;margin:32px 0;max-width:680px;padding:36px;text-align:center;width:100%}.all-done-icon{font-size:40px}.all-done-title{color:var(--text-primary);font-size:20px;font-weight:700}.all-done-sub{color:var(--text-secondary);font-size:14px}.arena-result-overlay{align-items:flex-start;background:var(--bg-base);display:flex;justify-content:center;min-height:100vh;padding:40px 20px 60px}.arena-result-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:16px;display:flex;flex-direction:column;gap:20px;max-width:540px;padding:32px;width:100%}.result-emoji{font-size:48px;text-align:center}.result-title{color:var(--text-primary);font-size:26px;font-weight:800;letter-spacing:-.5px;text-align:center}.result-scores{background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;gap:16px;padding:16px}.result-player,.result-scores{align-items:center;display:flex}.result-player{flex:1 1;flex-direction:column;gap:6px}.result-avatar{border:1px solid var(--border);border-radius:50%;height:40px;width:40px}.result-name{color:var(--text-secondary);font-size:13px;font-weight:600;text-align:center}.result-score{color:var(--text-primary);font-family:var(--font-mono);font-size:30px;font-weight:600}.result-vs{color:var(--text-tertiary);flex-shrink:0;font-size:12px;font-weight:700}.result-elo{align-items:center;background:var(--bg-surface);border:1px solid var(--border);border-radius:10px;display:flex;flex-direction:column;gap:4px;padding:16px}.elo-change-label{color:var(--text-tertiary);font-size:11px;font-weight:600;letter-spacing:.6px;text-transform:uppercase}.elo-change-value{font-family:var(--font-mono);font-size:32px;font-weight:600}.elo-gain .elo-change-value{color:var(--success)}.elo-loss .elo-change-value{color:var(--error)}.elo-new-value{color:var(--text-tertiary);font-family:var(--font-mono);font-size:12px}.result-back-btn{background:var(--brand);border:none;border-radius:10px;color:#fff;cursor:pointer;font-size:15px;font-weight:700;padding:13px;transition:background .15s}.result-back-btn:hover{background:var(--brand-dark)}.result-actions{display:flex;gap:10px}.result-actions .result-back-btn{flex:1 1}.result-review-btn{background:#0000;border:1px solid var(--brand,var(--border));border-radius:10px;color:var(--text-primary);color:var(--brand,var(--text-primary));cursor:pointer;flex:1 1;font-size:15px;font-weight:700;padding:13px;transition:background .15s,color 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10px}.ct-row.is-me{background:var(--brand-dim)}.ct-row__name{flex:1 1;text-align:left}.ct-row__score{font-weight:700}.ct-play{margin:0 auto;max-width:640px;padding:16px}.ct-play-top{align-items:center;display:flex;gap:10px}.ct-badge{background:var(--brand-dim);border-radius:999px;color:var(--brand-dark);font-family:var(--font-mono);padding:4px 10px}.ct-badge,.ct-prog,.ct-timer{font-weight:700}.ct-prog{color:var(--text-tertiary);margin-left:auto}.ct-voice{align-items:center;background:var(--bg-surface);border-radius:var(--r-md);display:flex;gap:8px;margin:12px 0;padding:8px}.ct-voice-btn{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--r-md);cursor:pointer;font-size:13px;font-weight:600;padding:7px 12px}.ct-voice-btn.is-on{background:var(--success-dim);border-color:var(--success);color:var(--success)}.ct-voice-btn:disabled{cursor:default;opacity:.5}.ct-vol{flex:1 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13px;text-align:left}.ct-opt.is-correct{background:var(--success-dim);border-color:var(--success)}.ct-opt.is-wrong{background:var(--error-dim);border-color:var(--error)}.ct-letter{align-items:center;background:var(--bg-hover);border-radius:50%;color:var(--text-secondary);display:inline-flex;flex-shrink:0;font-size:12px;font-weight:700;height:22px;justify-content:center;width:22px}.ct-opt-img{border-radius:4px;max-height:44px}.ct-mark{font-weight:800;margin-left:auto}.ct-opt.is-correct .ct-mark{color:var(--success)}.ct-opt.is-wrong .ct-mark{color:var(--error)}@media (max-width:480px){.ct-play{padding:12px}}.fr-wrap{align-items:center;display:flex;flex-direction:column;margin:0 auto;max-width:480px;padding:16px;text-align:center}.fr-back{align-self:flex-start;background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:22px}.fr-title{color:var(--text-primary);font-size:22px;font-weight:800;margin:6px 0 4px}.fr-sub{color:var(--text-tertiary);font-size:13px;margin:0 0 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14px}.fr-btn--go{background:var(--success);background:var(--brand,var(--success));border-color:#0000;color:#fff}.fr-btn--go:disabled{cursor:default;opacity:.6}.fr-btn--ghost{background:#0000}.fr-toast{background:var(--text-primary);border-radius:999px;bottom:24px;box-shadow:var(--shadow-lg);color:#fff;color:var(--bg-base,#fff);font-size:13px;font-weight:600;left:50%;max-width:90vw;padding:10px 16px;position:fixed;transform:translateX(-50%);z-index:1000}.mk-wrap{align-items:center;display:flex;flex-direction:column;margin:0 auto;max-width:480px;padding:16px;text-align:center}.mk-back{align-self:flex-start;background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:22px}.mk-title{color:var(--text-primary);font-size:22px;font-weight:800;margin:6px 0 4px}.mk-sub{color:var(--text-tertiary);font-size:13px;margin:0 0 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