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500;--mat-sys-label-medium-weight-prominent: 700;--mat-sys-label-small: 500 .688rem / 1rem Roboto;--mat-sys-label-small-font: Roboto;--mat-sys-label-small-line-height: 1rem;--mat-sys-label-small-size: .688rem;--mat-sys-label-small-tracking: .031rem;--mat-sys-label-small-weight: 500;--mat-sys-title-large: 400 1.375rem / 1.75rem Roboto;--mat-sys-title-large-font: Roboto;--mat-sys-title-large-line-height: 1.75rem;--mat-sys-title-large-size: 1.375rem;--mat-sys-title-large-tracking: 0;--mat-sys-title-large-weight: 400;--mat-sys-title-medium: 500 1rem / 1.5rem Roboto;--mat-sys-title-medium-font: Roboto;--mat-sys-title-medium-line-height: 1.5rem;--mat-sys-title-medium-size: 1rem;--mat-sys-title-medium-tracking: .009rem;--mat-sys-title-medium-weight: 500;--mat-sys-title-small: 500 .875rem / 1.25rem Roboto;--mat-sys-title-small-font: Roboto;--mat-sys-title-small-line-height: 1.25rem;--mat-sys-title-small-size: .875rem;--mat-sys-title-small-tracking: .006rem;--mat-sys-title-small-weight: 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var(--border-color);border-radius:var(--border-radius);text-decoration:none;color:var(--text-primary);transition:border-color var(--transition-fast),transform var(--transition-fast)}.catalog-card:hover{border-color:var(--color-green);transform:translateY(-2px)}.course-card{font:inherit;text-align:left;cursor:pointer}.course-card.active{border-color:var(--color-green)}.course-card:disabled{opacity:.6;cursor:wait}.tag-filter-row{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:14px}.tag-filter-chip{background-color:var(--bg-secondary);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:20px;padding:3px 10px;font-size:12px;font-weight:600;cursor:pointer;transition:border-color var(--transition-fast)}.tag-filter-chip:hover{border-color:var(--color-green)}.tag-filter-chip.active{background-color:var(--color-green);color:var(--bg-primary);border-color:var(--color-green)}.tag-filter-clear,.link-button{background:none;border:none;color:var(--color-green);font-size:12px;cursor:pointer;text-decoration:underline;padding:0}.card-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}.card-tag{font-size:11px;padding:2px 8px}.filter-row-label{font-size:12px;font-weight:600;color:var(--text-muted)}.level-filter-chip{font-family:var(--font-mono)}.level-badge{font-family:var(--font-mono);background-color:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color)}.premium-badge{display:inline-flex;align-items:center;gap:4px;background-color:#eab30824;color:#eab308;border:1px solid rgba(234,179,8,.4)}.badge-lock{width:11px;height:11px}.locked-card{display:flex;flex-direction:column;align-items:flex-start;gap:10px}.locked-icon{color:#eab308;width:34px;height:34px}.speed-locked{color:var(--text-muted)}.flag{width:22px;height:16.5px;border-radius:3px;display:block;box-shadow:0 0 0 1px var(--border-color)}.course-flags{display:flex;align-items:center;gap:7px;margin-bottom:4px}.course-group{margin-bottom:26px}.course-group-heading{margin-bottom:12px}.flag-arrow{width:13px;height:13px;color:var(--text-muted)}.card-title{font-weight:700;font-size:15px}.card-desc{font-size:13px;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.card-meta{font-size:12px;color:var(--text-muted);display:flex;align-items:center;gap:8px}.badge{background-color:var(--color-green-glow);color:var(--color-green);border-radius:6px;padding:1px 7px;font-size:11px;font-weight:600}#project-tabs .mat-mdc-tab-body-wrapper{padding-top:18px}#project-tabs .mat-mdc-tab{min-width:132px}#project-tabs .mdc-tab__text-label{display:inline-flex;align-items:center;gap:8px}.player-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:18px;align-items:start}@media(max-width:900px){.player-layout{grid-template-columns:1fr}}.player-stage{display:flex;flex-direction:column;gap:12px}#player-canvas{width:min(100%,90.6666666667vh);aspect-ratio:4/3;align-self:center;object-fit:contain;border-radius:var(--border-radius);border:1px solid var(--border-color);background-color:#000;cursor:pointer}.player-controls{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.player-time{font-family:var(--font-mono);font-size:13px;color:var(--text-secondary)}.control-label{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none}.player-sidebar{display:flex;flex-direction:column;gap:6px;max-height:76vh;overflow-y:auto;padding-right:4px}.sidebar-sentence{display:flex;flex-direction:column;gap:3px;width:100%;text-align:left;background-color:var(--mat-sys-surface-container-low);border:1px solid var(--mat-sys-outline-variant);border-radius:9px;color:var(--mat-sys-on-surface-variant);padding:9px 12px;font-family:inherit;font-size:13px;cursor:pointer;transition:background-color var(--transition-fast)}.sidebar-sentence:hover{background-color:var(--mat-sys-surface-container-high)}.sidebar-sentence.active{color:var(--mat-sys-on-secondary-container);border-color:transparent;background-color:var(--mat-sys-secondary-container)}.sidebar-translation{font-size:12px;font-style:italic;color:var(--mat-sys-on-surface-variant)}.quiz-card{max-width:720px;padding:22px;display:flex;flex-direction:column;gap:12px}.quiz-head{display:flex;align-items:center;justify-content:space-between}.quiz-progress-track{height:6px;background-color:var(--bg-primary);border-radius:3px;overflow:hidden}.quiz-progress-fill{height:100%;background-color:var(--color-green);transition:width .25s ease}.quiz-question{font-size:20px}.quiz-translation{font-size:13px;font-style:italic;color:var(--text-muted)}.quiz-options{display:flex;flex-direction:column;gap:10px}.quiz-option{display:flex;flex-direction:column;gap:3px;text-align:left;background-color:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:10px;padding:12px 14px;font-family:var(--font-sans);font-size:14px;cursor:pointer}.quiz-option:hover:not(:disabled){border-color:var(--color-green)}.quiz-option:disabled{cursor:default}.quiz-option.correct{border-color:var(--color-green);background-color:var(--color-green-glow)}.quiz-option.wrong{border-color:var(--color-red);background-color:#ef44441f}.quiz-option-translation{font-size:12px;font-style:italic;color:var(--text-muted)}.quiz-feedback{font-weight:600}.quiz-feedback.ok{color:var(--color-green)}.quiz-feedback.fail{color:var(--color-red)}.quiz-review{display:flex;flex-direction:column;gap:8px}.quiz-review-row{display:flex;gap:10px;padding:10px 12px;background-color:var(--bg-primary);border:1px solid var(--border-color);border-radius:9px;font-size:13px}.quiz-review-row.correct .quiz-review-mark{color:var(--color-green)}.quiz-review-row.wrong .quiz-review-mark{color:var(--color-red)}.resume-banner{display:flex;align-items:center;gap:12px;padding:10px 14px;background-color:var(--color-green-glow);border:1px solid var(--color-green);border-radius:9px;font-size:14px}.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;margin-bottom:26px}.stat-card{display:flex;flex-direction:column;gap:4px;padding:18px}.stat-value{font-size:24px;font-weight:700;color:var(--color-green)}.stat-label{font-size:12px;color:var(--text-muted)}.section-heading{font-size:17px;margin-bottom:12px}.activity-list{display:flex;flex-direction:column;gap:8px}.activity-row{display:grid;grid-template-columns:90px 1fr auto auto;gap:12px;align-items:center;padding:10px 14px;background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:9px;font-size:13px}.activity-type{color:var(--color-green);font-weight:600}.activity-name a{color:var(--text-primary)}.activity-score{font-family:var(--font-mono)}.activity-date{color:var(--text-muted);font-size:12px}.cloze-form{display:flex;gap:10px}.cloze-form input{flex:1}.word-diff{display:flex;flex-wrap:wrap;gap:6px;font-size:15px}.diff-ok{color:var(--color-green)}.diff-bad{color:var(--color-red);text-decoration:underline wavy}.chip-row{display:flex;flex-wrap:wrap;gap:8px;min-height:44px;align-items:center}.chip-answer{padding:8px;border:1px dashed var(--border-color);border-radius:9px}.chip{background-color:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:8px;padding:8px 12px;font-family:var(--font-sans);font-size:14px;cursor:pointer}.chip:hover{border-color:var(--color-green)}.chip.placed{background-color:var(--color-green-glow);border-color:var(--color-green)}.cards-back{font-size:18px;color:var(--color-green);font-style:italic}.cards-grades{display:flex;gap:10px}.grade-again{border-color:var(--color-red);color:var(--color-red)}.grade-good{border-color:var(--color-green);color:var(--color-green)}.grade-easy{border-color:var(--accent-blue);color:var(--accent-blue)}