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.app-header{background:linear-gradient(to right,var(--primary-color) 60%,var(--primary-color-light))}.header-left,.header-right{flex:1}.header-right{display:flex;justify-content:flex-end;align-items:center;gap:15px}.user-info{color:#fff;font-weight:400;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:300px;margin-top:4px;font-size:.9rem;opacity:.85}.header-logo{height:80px;width:auto}.header-title-container{display:flex;flex-direction:column;align-items:center;position:absolute;left:50%;transform:translate(-50%)}.app-header h1{margin:0;font-family:Montserrat,Vazirmatn,sans-serif;font-size:2rem;font-weight:700;text-align:center}.lang-switcher,.logout-btn{background-color:#fff3;color:#fff;border:1px solid white;border-radius:50%;width:40px;height:40px;padding:0;cursor:pointer;transition:background-color 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var(--success-color)}.main-menu-card .completion-mark{position:absolute;top:10px;font-size:1.5rem;color:var(--success-color);line-height:1}html[dir=ltr] .main-menu-card .completion-mark{right:12px}html[dir=rtl] .main-menu-card .completion-mark{left:12px}.main-menu-card.locked{opacity:.6;cursor:not-allowed;background-color:#f0f0f0;border-color:#dcdcdc}.main-menu-card.locked:hover{transform:none;box-shadow:0 4px 10px #00000014}.lock-icon{margin-inline-start:8px;font-size:1rem;color:#888}.main-menu-icon{font-size:2.2rem;line-height:1;margin-bottom:8px}.main-menu-title{font-size:.9rem;font-weight:700;color:var(--primary-color);font-family:Montserrat,Vazirmatn,sans-serif;display:flex;align-items:center;justify-content:center}.chapter-list-view,.user-management-view,.user-list-view,.key-terms-view,.educational-videos-view,.gamification-view{text-align:center;animation:fadeIn .5s 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auto;justify-content:center;max-width:1000px}.chapter-card{position:relative;background-color:var(--surface-color);border:1px solid var(--light-gray);border-radius:12px;padding:10px;text-align:center;cursor:pointer;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 10px #00000014;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:120px}.chapter-card:hover{transform:translateY(-8px);box-shadow:0 8px 25px #00579233}.chapter-card.completed{border:2px solid var(--success-color)}.chapter-card.locked{opacity:.6;cursor:not-allowed;background-color:#f0f0f0;border-color:#dcdcdc}.chapter-card.locked:hover{transform:none;box-shadow:0 4px 10px #00000014}.completion-mark{position:absolute;top:8px;font-size:1.5rem;color:var(--success-color);line-height:1}html[dir=ltr] .completion-mark{right:12px}html[dir=rtl] .completion-mark{left:12px}.chapter-icon{font-size:2.2rem;color:var(--primary-color);line-height:1;margin-bottom:8px}.chapter-title{margin-top:0;font-size:.9rem;font-weight:700;color:var(--primary-color);display:flex;align-items:center;justify-content:center;font-family:Montserrat,Vazirmatn,sans-serif}.chapter-view{background:var(--surface-color);padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000001a;animation:slideInAndFade .6s cubic-bezier(.25,.46,.45,.94);text-align:start;position:relative}.chapter-header-container{display:flex;justify-content:center;align-items:center;position:relative;margin:-30px -30px 25px;background-color:var(--primary-color-light);border-radius:8px 8px 0 0}.chapter-view h2,.report-card h2{font-family:Montserrat,Vazirmatn,sans-serif;font-size:1.8rem;color:#fff;padding:20px;text-align:center;flex-grow:1;margin:0;background-color:transparent;border-radius:0}.report-card h2.report-card-main-title{font-size:1.3rem;font-weight:700;padding-bottom:5px}.viewed-user-subtitle{font-size:.9rem;color:var(--primary-color);margin-top:5px;margin-bottom:15px;font-weight:700;opacity:.9;text-align:center}.notes-button-chapter{position:absolute;top:50%;transform:translateY(-50%);background-color:#fff;color:var(--primary-color);border:1px solid var(--primary-color);border-radius:50%;width:40px;height:40px;padding:0;cursor:pointer;transition:background-color .2s,color .2s,border-color .2s;display:flex;align-items:center;justify-content:center;z-index:5}.notes-button-chapter:hover{background-color:var(--primary-color);color:#fff}.notes-button-chapter svg{width:22px;height:22px;stroke-width:2.2}html[dir=ltr] .notes-button-chapter{left:25px}html[dir=rtl] .notes-button-chapter{right:25px}.principle-main-sentence{font-size:1.25rem;font-weight:700;color:var(--primary-color);margin-bottom:30px;padding:20px;line-height:1.6;text-align:center;background-color:#f0f5f9;border-radius:8px;border:1px solid #e0eaf1}.chapter-prose-summary{background-color:#f0f5f9;border-inline-start:5px solid var(--primary-color-light);padding:20px;margin-top:40px;border-radius:0 8px 8px 0}.summary h3,.chapter-prose-summary h3{margin-top:0;color:var(--primary-color);font-family:Montserrat,Vazirmatn,sans-serif;font-size:1.15rem}.chapter-prose-summary ul{list-style-position:inside;padding-inline-start:20px;margin:0;font-size:.9rem;line-height:1.7}html[dir=rtl] .chapter-prose-summary ul,html[dir=ltr] .chapter-prose-summary ul{list-style-type:"• "}.chapter-prose-summary li{margin-bottom:12px}html[dir=rtl] .chapter-prose-summary{border-radius:8px 0 0 8px}.summary{font-size:.9rem;line-height:1.8}.summary p{font-weight:400;color:#000}.summary 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h3{font-family:Montserrat,Vazirmatn,sans-serif;font-size:1.6rem;color:var(--primary-color);margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid var(--primary-color)}.question-block{margin-bottom:25px;padding:20px;border:1px solid var(--light-gray);border-radius:12px;background-color:var(--surface-color);box-shadow:0 2px 8px #0000000a;position:relative}.question-text{font-weight:700;margin-bottom:15px}.options-list{list-style:none;padding:0}.option-item{display:flex;align-items:center;margin-bottom:10px;padding:12px;border:1px solid var(--light-gray);border-radius:8px;cursor:pointer;transition:background-color .2s,border-color .2s;background-color:transparent}.option-item:hover{border-color:var(--primary-color-light)}.option-item input[type=radio]{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:transparent;margin:0;color:var(--primary-color);width:1.3em;height:1.3em;border:2px solid 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#0000001a}.score-circle.warning{box-shadow:0 0 0 10px var(--warning-color),0 5px 20px #0000001a}.score-circle.danger{box-shadow:0 0 0 10px var(--danger-color),0 5px 20px #0000001a}.score-percentage{font-size:3.5rem;font-weight:700;font-family:Montserrat,sans-serif;transition:color .5s ease-in-out}.score-percentage.success{color:var(--success-color)}.score-percentage.warning{color:var(--warning-color)}.score-percentage.danger{color:var(--danger-color)}.score-label{font-size:1rem;color:#666;margin-top:-10px;font-weight:700}.report-details-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;text-align:start}.report-section{background-color:#fbfdff;padding:20px;border:1px solid #eaf2f8;border-radius:8px}.report-section h3{font-family:Montserrat,Vazirmatn,sans-serif;font-size:1rem;color:var(--primary-color);margin-top:0;margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid var(--primary-color)}.section-summary-progress{margin-bottom:25px}.section-summary-progress strong{display:block;margin-bottom:8px;font-size:1rem}.chapter-results-list{list-style:none;padding:0;margin:0}.chapter-result-item{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:10px 0;border-bottom:1px solid var(--light-gray);cursor:pointer;transition:background-color .2s}.chapter-result-item:hover{background-color:#f0f5f9}.chapter-result-item:last-child{border-bottom:none}.chapter-result-title{flex:1;font-size:.9rem;color:var(--text-color)}.progress-bar-container{display:flex;align-items:center;gap:10px;flex:1;min-width:150px}.progress-bar-bg{flex-grow:1;height:12px;background-color:#e0e0e0;border-radius:6px;overflow:hidden}.progress-bar-fg{height:100%;border-radius:6px;transition:width .5s ease-in-out,background-color .5s ease-in-out}.progress-bar-fg.success{background-color:var(--success-color)}.progress-bar-fg.warning{background-color:var(--warning-color)}.progress-bar-fg.danger{background-color:var(--danger-color)}.progress-bar-label{font-size:.9rem;font-weight:700;color:#555;white-space:nowrap}.btn{padding:10px 20px;font-family:Vazirmatn,Montserrat,sans-serif;font-size:1rem;border:none;border-radius:5px;cursor:pointer;transition:background-color .2s,transform .1s;font-weight:700}.btn:active{transform:scale(.98)}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:#004080}.btn-primary:disabled{background-color:#a0a0a0;cursor:not-allowed}.btn-secondary{background-color:var(--success-color);color:#fff}.btn-secondary:hover{background-color:#218838}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-danger:hover{background-color:#c82333}.btn-large{padding:12px 24px;font-size:1.05rem}.quiz-actions{display:flex;justify-content:center;align-items:center;gap:15px;flex-wrap:wrap;text-align:center;margin-top:20px}.quiz-actions.final-exam-actions{justify-content:space-between;width:100%}.quiz-timer{padding:10px 20px;border:2px solid var(--primary-color);border-radius:8px;margin-bottom:20px;text-align:center;font-size:1.4rem;font-weight:700;color:var(--primary-color);background-color:#f0f5f9}.quiz-timer.low-time{color:var(--danger-color);border-color:var(--danger-color);animation:pulse 1s infinite}.quiz-timer.final-exam-timer{position:absolute;top:50%;transform:translateY(-50%);font-size:1.4rem;font-weight:700;color:var(--danger-color);background-color:transparent;border:none;padding:0;margin:0}html[dir=ltr] .quiz-timer.final-exam-timer{right:0}html[dir=rtl] .quiz-timer.final-exam-timer{left:0}.time-up-alert{padding:15px;background-color:var(--danger-bg-color);color:var(--danger-color);border:1px solid var(--danger-color);border-radius:8px;text-align:center;font-weight:700;margin-bottom:20px}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.02)}to{transform:scale(1)}}.back-button{position:absolute;top:50%;transform:translateY(-50%);z-index:10;background-color:#fff3;border:1px solid #fff;color:#fff;width:48px;height:48px;border-radius:50%;padding:0;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background-color .2s,transform .1s ease-in-out}.back-button:hover{background-color:#fff6}.back-button:active{transform:translateY(-50%) scale(.98)}html[dir=ltr] .back-button{right:25px}html[dir=rtl] .back-button{left:25px}.back-button-subview{position:absolute;top:50%;transform:translateY(-50%);background-color:transparent;color:var(--primary-color);border:none;width:44px;height:44px;border-radius:50%;padding:0;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background-color .2s ease-in-out}.back-button-subview:hover{background-color:#eef2f5}html[dir=ltr] .back-button-subview{right:0}html[dir=rtl] .back-button-subview{left:0}.back-button-subview svg{width:24px;height:24px;stroke-width:2.5}html[dir=rtl] .back-button-subview svg{transform:scaleX(-1)}.report-card-button-container{margin-top:50px;padding-top:30px;border-top:1px solid var(--light-gray)}.lang-switcher svg,.logout-btn svg,.back-button svg,.home-button-subview svg{width:24px;height:24px;stroke-width:2.5}html[dir=rtl] .back-button svg{transform:scaleX(-1)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes slideInAndFade{0%{opacity:0;transform:translateY(30px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes slideUpItem{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.login-container{display:flex;justify-content:center;align-items:center;flex-grow:1;padding:20px}.login-form{background:var(--surface-color);padding:30px;border-radius:12px;box-shadow:0 8px 25px #00579226;width:100%;max-width:360px;text-align:center;animation:fadeIn .5s ease-in-out;position:relative}.login-form h2{color:var(--primary-color);margin-top:0;margin-bottom:25px;font-family:Montserrat,Vazirmatn,sans-serif}.form-group{margin-bottom:20px;text-align:start}.form-group label{display:block;margin-bottom:8px;font-weight:700;color:var(--text-color)}.required-star{color:var(--danger-color);margin-inline-start:4px}.form-group input,.form-group textarea{width:100%;padding:12px;border:1px solid var(--light-gray);border-radius:5px;box-sizing:border-box;font-size:1rem;font-family:Vazirmatn,Montserrat,sans-serif;background-color:#f7f9fb;color:var(--text-color);transition:border-color .2s 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ease-in-out}.message-bar.success-message{color:var(--success-color);background-color:var(--success-bg-color);border-color:var(--success-color)}.message-bar.error-message{color:var(--danger-color);background-color:var(--danger-bg-color);border-color:var(--danger-color)}.user-management-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:30px;margin-top:20px}.user-management-card{background:var(--surface-color);border-radius:12px;padding:30px;box-shadow:0 4px 10px #00000014;border:1px solid var(--light-gray)}.user-management-card h3{font-family:Montserrat,Vazirmatn,sans-serif;font-size:1.5rem;color:var(--primary-color);border-bottom:2px solid var(--primary-color-light);padding-bottom:10px;margin-top:0;margin-bottom:20px}.user-list{list-style:none;padding:0;max-height:300px;overflow-y:auto}.user-list li{padding:12px;border-bottom:1px solid 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