.onboarding-container{align-items:center;background-color:var(--bg-color);display:flex;justify-content:center;min-height:100vh;padding:20px}.onboarding-card{background:var(--card-bg);border:2px solid var(--card-border);border-radius:20px;box-shadow:0 10px 30px #0000001a;max-width:600px;padding:40px;width:100%}.step-content{text-align:center}.step-title{color:var(--text-primary);font-size:2rem;margin-bottom:10px}.step-description{color:var(--text-secondary);font-size:1.1rem;margin-bottom:30px}.nickname-input{background:#fff;font-size:1.1rem;margin-bottom:20px;padding:15px 20px;transition:all .3s ease;width:100%}.nickname-input:focus{box-shadow:0 0 0 3px var(--primary-light)}.complete-button,.next-button{background:var(--primary);border:none;border-radius:10px;color:#fff;cursor:pointer;font-size:1.1rem;font-weight:600;padding:15px 30px;transition:all .3s ease}.complete-button:hover,.next-button:hover:not(:disabled){background:var(--primary-dark);box-shadow:0 5px 15px #0003;transform:translateY(-2px)}.next-button:disabled{cursor:not-allowed;opacity:.5}.back-button{background:#0000;border-radius:10px;color:var(--text-secondary);font-size:1.1rem;font-weight:600;padding:15px 30px;transition:all .3s ease}.back-button:hover{background:var(--bg-color);color:var(--text-primary)}.button-group{display:flex;gap:15px;justify-content:center}.interests-grid{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));margin-bottom:30px}.interest-card{align-items:center;background:#fff;border:2px solid var(--card-border);border-radius:15px;cursor:pointer;display:flex;flex-direction:column;gap:10px;padding:20px 15px;transition:all .3s ease}.interest-card:hover{box-shadow:0 5px 15px #0000001a;transform:translateY(-2px)}.interest-card.selected{background:var(--primary-light);border-color:var(--primary)}.interest-emoji{font-size:2rem}.themes-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(2,1fr);margin-bottom:30px}.theme-card{align-items:center;background:#fff;border:2px solid #0000;border-radius:15px;box-shadow:0 4px 12px #0000001a;color:#333;cursor:pointer;display:flex;flex-direction:column;gap:10px;overflow:hidden;padding:25px;position:relative;transition:all .3s ease}.theme-card:before{bottom:0;opacity:.1;z-index:-1}.theme-card:after,.theme-card:before{background:var(--primary-gradient);content:"";left:0;position:absolute;right:0;top:0}.theme-card:after{height:4px;z-index:1}.theme-card:hover{box-shadow:0 10px 25px #00000026;transform:translateY(-3px)}.theme-card.selected{border-color:var(--primary);box-shadow:0 0 0 4px #c8b6f64d;transform:translateY(-2px)}.theme-card.selected:before{opacity:.2}.theme-emoji{font-size:2.5rem}.theme-name{font-size:1.2rem}.theme-description{font-size:.9rem;opacity:.9}.progress-indicator{display:flex;gap:10px;justify-content:center;margin-top:30px}.progress-dot{background:var(--card-border);border-radius:50%;height:10px;transition:all .3s ease;width:10px}.progress-dot.active{background:var(--primary);transform:scale(1.2)}@media (max-width:600px){.onboarding-card{padding:30px 20px}.themes-grid{grid-template-columns:1fr}.interests-grid{grid-template-columns:repeat(2,1fr)}}.navbar{background:var(--card-bg);border-bottom:2px solid var(--card-border);box-shadow:0 2px 10px #0000000d;left:0;position:fixed;right:0;top:0;z-index:1000}.navbar-container{justify-content:space-between;padding:15px 20px;width:100%}.home-button,.navbar-container{align-items:center;display:flex}.home-button{background:none;border:none;color:var(--text-primary);cursor:pointer;font-size:1.2rem;font-weight:600;gap:8px;transition:var(--transition)}.home-button:hover{color:var(--primary)}.home-icon{font-size:1.5rem}.settings-button{align-items:center;background:var(--primary-light);border:2px solid var(--primary);border-radius:50%;cursor:pointer;display:flex;height:40px;justify-content:center;transition:var(--transition);width:40px}.settings-button:hover{background:var(--primary);transform:rotate(90deg)}.settings-icon{font-size:1.2rem}.modal-overlay{align-items:center;animation:fadeIn .3s ease;background:#00000080;bottom:0;display:flex;justify-content:center;left:0;position:fixed;right:0;top:0;z-index:2000}.settings-modal{animation:slideUp .3s ease;background:var(--card-bg);border-radius:20px;box-shadow:0 20px 60px #0003;max-height:80vh;max-width:600px;overflow-y:auto;width:90%}.modal-header{align-items:center;border-bottom:2px solid var(--card-border);display:flex;justify-content:space-between;padding:25px 30px}.modal-header h2{color:var(--text-primary);font-size:1.5rem}.close-button{align-items:center;background:none;border:none;border-radius:50%;color:var(--text-secondary);cursor:pointer;display:flex;font-size:1.5rem;height:40px;justify-content:center;transition:var(--transition);width:40px}.close-button:hover{background:var(--card-border);color:var(--text-primary)}.modal-content{padding:30px}.settings-section{margin-bottom:30px}.settings-section h3{color:var(--text-primary);font-size:1.2rem;margin-bottom:15px}.nickname-display{align-items:center;display:flex;gap:15px}.nickname-display span{background:var(--primary-light);border-radius:10px;color:var(--text-primary);font-size:1.1rem;padding:10px 15px}.edit-nickname,.save-nickname{background:var(--primary);border:none;border-radius:20px;color:#fff;cursor:pointer;font-size:.9rem;padding:8px 20px;transition:var(--transition)}.edit-nickname:hover,.save-nickname:hover{background:var(--primary-dark)}.nickname-edit{display:flex;gap:10px}.nickname-input{background:var(--bg-color);border:2px solid var(--card-border);border-radius:10px;color:var(--text-primary);flex:1 1;font-size:1rem;padding:10px 15px}.nickname-input:focus{border-color:var(--primary);outline:none}.language-grid{grid-gap:15px;display:grid;gap:15px;grid-template-columns:repeat(2,1fr)}.language-option{align-items:center;background:var(--card-bg);border:2px solid var(--card-border);border-radius:15px;color:var(--text-primary);cursor:pointer;display:flex;font-size:1rem;font-weight:500;gap:8px;justify-content:center;padding:15px;transition:var(--transition)}.language-option:hover{background:var(--primary-light);border-color:var(--primary)}.language-option.active{background:var(--primary);border-color:var(--primary);color:#fff}.theme-grid{grid-gap:15px;display:grid;gap:15px;grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}.theme-option{align-items:center;border:2px solid;border-radius:15px;cursor:pointer;display:flex;flex-direction:column;gap:8px;opacity:.7;padding:15px;transition:var(--transition)}.theme-option:hover{opacity:1;transform:scale(1.05)}.theme-option.active{box-shadow:0 5px 20px #0000001a;opacity:1}.theme-emoji{font-size:2rem}.theme-name{color:#333;font-size:.9rem;font-weight:600;text-shadow:none}.interests-grid{grid-gap:15px;display:grid;gap:15px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.interest-option{align-items:center;background:var(--card-bg);border:2px solid var(--card-border);border-radius:15px;cursor:pointer;display:flex;gap:10px;padding:15px;transition:var(--transition)}.interest-option:hover{background:var(--primary-light);border-color:var(--primary)}.interest-option.selected{background:var(--primary);border-color:var(--primary)}.interest-option.selected .interest-label{color:#fff}.interest-emoji{font-size:1.5rem}.interest-label{color:var(--text-primary);font-size:1rem;font-weight:500}.modal-footer{border-top:2px solid var(--card-border);display:flex;justify-content:flex-end;padding:20px 30px}.save-button{background:var(--primary);border:none;border-radius:25px;color:#fff;cursor:pointer;font-size:1rem;font-weight:600;padding:12px 30px;transition:var(--transition)}.save-button:hover{background:var(--primary-dark);transform:translateY(-2px)}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width:768px){.settings-modal{max-height:90vh;width:95%}.modal-content{padding:20px}.interests-grid,.theme-grid{grid-template-columns:repeat(2,1fr)}}.course-list-container{background-color:var(--bg-color);min-height:100vh;padding-bottom:40px;padding-top:70px}.course-header{background:linear-gradient(135deg,var(--primary-light) 0,var(--card-bg) 100%);border-bottom:2px solid var(--card-border);margin-bottom:30px;overflow:hidden;padding:40px 0;position:relative}.course-header:before{background:radial-gradient(circle,var(--primary) 0,#0000 70%);border-radius:50%;content:"";height:300px;opacity:.1;position:absolute;right:-10%;top:-50%;width:300px}.header-container{margin:0 auto;max-width:1200px;padding:0 20px;position:relative;z-index:1}.welcome-section{text-align:center}.welcome-title{animation:fadeIn .5s ease;color:var(--text-primary);font-size:2.5rem;font-weight:700;margin-bottom:12px}.welcome-subtitle{align-items:center;animation:fadeIn .5s ease .1s backwards;display:flex;flex-direction:column;font-size:1.2rem;gap:8px}.hashtag-container{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.interest-tag{background:var(--primary);border-radius:15px;color:#fff;font-size:.95rem;font-weight:500;padding:4px 12px}.subtitle-text{color:var(--text-secondary);font-size:1.1rem}.theme-indicator{align-items:center;animation:slideIn .5s ease;background:var(--primary-light);border-radius:20px;color:var(--text-primary);display:flex;font-size:.9rem;gap:10px;padding:10px 20px}.theme-emoji{font-size:1.2rem}.filter-tabs{-webkit-overflow-scrolling:touch;display:flex;gap:15px;margin:0 auto 30px;max-width:1200px;overflow-x:auto;padding:0 20px}.filter-tab{background:var(--card-bg);border:2px solid var(--card-border);border-radius:25px;color:var(--text-secondary);cursor:pointer;font-size:1rem;font-weight:500;padding:10px 20px;transition:var(--transition);white-space:nowrap}.filter-tab:hover{background:var(--primary-light);border-color:var(--primary);color:var(--text-primary)}.filter-tab.active{background:var(--primary);border-color:var(--primary);color:#fff}.course-grid{grid-gap:25px;display:grid;gap:25px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));margin:0 auto;max-width:1200px;padding:0 20px}.course-card{animation:fadeIn .5s ease backwards;background:var(--card-bg);border:2px solid var(--card-border);border-radius:15px;cursor:pointer;overflow:hidden;transition:var(--transition)}.course-card:first-child{animation-delay:.1s}.course-card:nth-child(2){animation-delay:.2s}.course-card:nth-child(3){animation-delay:.3s}.course-card:nth-child(4){animation-delay:.4s}.course-card:hover:not(.disabled){border-color:var(--primary);box-shadow:0 10px 30px #0000001a;transform:translateY(-5px)}.course-card.disabled{cursor:not-allowed;opacity:.7}.course-card.disabled:hover{border-color:var(--card-border);box-shadow:none;transform:none}.course-preview{background:var(--primary-light);height:180px;overflow:hidden;position:relative}.course-preview img{height:100%;object-fit:cover;width:100%}.course-type-badge{align-items:center;background:#fffffff2;border-radius:20px;box-shadow:0 2px 10px #0000001a;display:flex;font-size:.9rem;font-weight:600;gap:5px;padding:8px 15px;position:absolute;right:15px;top:15px}.type-emoji{font-size:1.1rem}.course-locked-overlay{align-items:center;background:#0009;bottom:0;display:flex;flex-direction:column;gap:10px;justify-content:center;left:0;position:absolute;right:0;top:0}.lock-icon{font-size:2rem}.lock-text{color:#fff;font-size:1.1rem;font-weight:600}.course-content{padding:20px}.course-title{font-size:1.3rem;margin-bottom:10px}.course-description{font-size:.95rem;line-height:1.5;margin-bottom:15px}.course-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px}.difficulty-badge{border-radius:15px;color:#fff;font-size:.85rem;font-weight:500;padding:4px 12px}.course-steps,.course-time{align-items:center;color:var(--text-secondary);display:flex;font-size:.85rem}.matching-interests{border-top:1px solid var(--card-border);margin-top:10px;padding-top:10px}.match-label{color:var(--primary-dark);font-size:.85rem;font-weight:500}.course-grid.loading{align-items:center;display:flex;justify-content:center;min-height:400px}.empty-state{color:var(--text-secondary);padding:60px 20px;text-align:center}.empty-state h3{font-size:1.5rem;margin-bottom:10px}@media (max-width:768px){.course-header .container{flex-direction:column;gap:20px;text-align:center}.welcome-title{font-size:1.5rem}.welcome-subtitle{font-size:1rem}.course-grid{gap:20px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}.filter-tabs{padding-bottom:10px}.filter-tabs::-webkit-scrollbar{height:3px}.filter-tabs::-webkit-scrollbar-track{background:var(--card-border)}.filter-tabs::-webkit-scrollbar-thumb{background:var(--primary);border-radius:3px}}@media (max-width:480px){.course-grid{grid-template-columns:1fr}.course-preview{height:150px}}.course-detail-container{background-color:var(--bg-color);min-height:100vh;padding-bottom:60px;padding-top:70px}.hero-section{background:linear-gradient(180deg,var(--primary-light) 0,var(--bg-color) 100%);padding:40px 20px 60px;position:relative}.back-button{align-items:center;background:var(--card-bg);border:2px solid var(--card-border);border-radius:25px;color:var(--text-primary);cursor:pointer;display:inline-flex;font-weight:500;gap:5px;margin:0 auto 30px 20px;padding:10px 20px;text-decoration:none;transition:var(--transition);width:-webkit-fit-content;width:fit-content}.back-button:hover{background:var(--primary-light);border-color:var(--primary);transform:translateX(-5px)}.hero-content{grid-gap:60px;align-items:start;display:grid;gap:60px;grid-template-columns:1fr 1fr;margin:0 auto;max-width:1200px;padding-top:20px}.hero-info{display:flex;flex-direction:column;gap:20px}.course-title{animation:fadeIn .5s ease;color:var(--text-primary);font-size:2.5rem;margin-bottom:20px}.course-description{animation:fadeIn .5s ease .1s backwards;color:var(--text-secondary);font-size:1.1rem;line-height:1.6;margin-bottom:30px}.course-info{animation:fadeIn .5s ease .2s backwards;display:flex;gap:20px;margin-bottom:30px}.info-item{align-items:center;color:var(--text-secondary);display:flex;font-size:1rem;gap:5px}.start-button{align-items:center;animation:fadeIn .5s ease .3s backwards;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border:none;border-radius:30px;box-shadow:0 4px 15px #0003;color:#fff;cursor:pointer;display:inline-flex;font-size:1.1rem;font-weight:600;gap:8px;padding:15px 40px;transition:var(--transition)}.start-button:hover{background:linear-gradient(135deg,var(--primary-dark),var(--primary));box-shadow:0 8px 25px #0000004d;transform:translateY(-2px)}.hero-preview{animation:slideIn .5s ease .2s backwards;height:100%}.hero-preview,.preview-container{align-items:center;display:flex;width:100%}.preview-container{background:var(--card-bg);border:2px solid var(--card-border);border-radius:15px;box-shadow:0 10px 30px #0000001a;gap:30px;padding:30px}.preview-after,.preview-before{flex:1 1;text-align:center}.preview-after h4,.preview-before h4{color:var(--text-secondary);font-size:1rem;font-weight:500;margin-bottom:15px}.preview-before pre{background:#f5f5f5;border-radius:10px;color:#333;font-family:Consolas,Monaco,monospace;font-size:.9rem;margin:0 auto;max-width:300px;padding:20px;text-align:left;white-space:pre-wrap}.preview-arrow{animation:pulse 2s infinite;color:var(--primary);font-size:2rem}.preview-after img{border-radius:10px;box-shadow:0 5px 20px #0000001a;display:block;height:auto;margin:0 auto;max-width:250px;width:100%}.tabs-section{margin:0 auto;max-width:1200px;padding:0 20px}.tabs{background:var(--card-bg);border:2px solid var(--card-border);border-radius:15px;display:flex;gap:5px;margin-bottom:30px;padding:5px}.tab{background:#0000;border:none;border-radius:10px;color:var(--text-secondary);cursor:pointer;flex:1 1;font-size:1rem;font-weight:500;padding:12px 24px;transition:var(--transition)}.tab:hover{color:var(--text-primary)}.tab.active{background:var(--primary);color:#fff}.tab-content{animation:fadeIn .3s ease;background:var(--card-bg);border:2px solid var(--card-border);border-radius:15px;padding:40px}.overview-content h2{font-size:1.5rem}.overview-content h2,.overview-content h3{color:var(--text-primary);margin-bottom:15px}.overview-content h3{font-size:1.2rem;margin-top:25px}.overview-content p{color:var(--text-secondary);line-height:1.6;margin-bottom:15px}.overview-content ul{list-style:none;padding:0}.overview-content li{color:var(--text-secondary);padding:10px 0 10px 25px;position:relative}.overview-content li:before{color:var(--primary);content:"✓";font-weight:700;left:0;position:absolute}.curriculum-content h2{color:var(--text-primary);font-size:1.5rem;margin-bottom:30px}.steps-timeline{padding-left:40px;position:relative}.step-item{align-items:flex-start;display:flex;gap:20px;margin-bottom:30px;position:relative}.step-number{align-items:center;background:var(--primary);border-radius:50%;color:#fff;display:flex;font-size:.9rem;font-weight:600;height:40px;justify-content:center;left:-40px;position:absolute;width:40px}.step-connector{background:var(--card-border);height:30px;left:-20px;position:absolute;top:40px;width:2px}.step-info h4{color:var(--text-primary);font-size:1.1rem;margin-bottom:8px}.step-meta{color:var(--text-secondary);display:flex;font-size:.9rem;gap:15px}.concepts-content h2{color:var(--text-primary);font-size:1.5rem;margin-bottom:30px}.concepts-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.concept-card{background:var(--bg-color);border-radius:15px;padding:25px;text-align:center;transition:var(--transition)}.concept-card:hover{box-shadow:0 5px 15px #0000001a;transform:translateY(-3px)}.concept-icon{display:block;font-size:2.5rem;margin-bottom:15px}.concept-card h4{color:var(--text-primary);font-size:1.1rem;margin-bottom:10px}.concept-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.4}.next-courses-section{margin:60px auto 0;max-width:1200px;padding:0 20px}.next-courses-section h2{color:var(--text-primary);font-size:1.5rem;margin-bottom:25px}.next-courses{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.next-course-card{background:var(--card-bg);border:2px solid var(--card-border);border-radius:15px;cursor:pointer;padding:25px;transition:var(--transition)}.next-course-card:hover{border-color:var(--primary);box-shadow:0 5px 20px #0000001a;transform:translateY(-3px)}.next-course-card h4{color:var(--text-primary);font-size:1.2rem;margin-bottom:10px}.next-course-card p{color:var(--text-secondary);line-height:1.5}@media (max-width:1024px){.hero-content{gap:40px;grid-template-columns:1fr}.preview-container{flex-direction:column}.preview-arrow{transform:rotate(90deg)}}@media (max-width:768px){.hero-content{gap:40px;grid-template-columns:1fr}.course-title{font-size:2rem}.tab-content{padding:25px}.concepts-grid{grid-template-columns:1fr}.steps-timeline{padding-left:30px}.step-number{height:35px;left:-30px;width:35px}.back-button{margin:0 0 20px 15px}}@media (max-width:480px){.hero-section{padding:20px 15px 40px}.course-info{gap:10px}.course-info,.tabs{flex-direction:column}.tab{width:100%}}.course-template-container{background-color:var(--bg-color);display:flex;flex-direction:column;height:100vh;padding-top:70px}.article-container{flex:1 1;overflow-y:auto;padding:40px 20px}.article-content{animation:fadeIn .5s ease;background:var(--card-bg);border:2px solid var(--card-border);border-radius:20px;box-shadow:0 10px 30px #0000000d;margin:0 auto;max-width:800px;padding:60px}.article-content h1{color:var(--text-primary);font-size:2.5rem;margin-bottom:30px;text-align:center}.article-content h2{border-left:4px solid var(--primary);color:var(--text-primary);font-size:1.8rem;margin-bottom:20px;margin-top:40px;padding-left:20px}.article-content h3{color:var(--text-primary);font-size:1.4rem;margin-bottom:15px;margin-top:30px}.article-content p{color:var(--text-secondary);font-size:1.1rem;line-height:1.8;margin-bottom:20px}.article-content ul{margin:20px 0;padding-left:30px}.article-content li{color:var(--text-secondary);font-size:1.05rem;line-height:1.8;margin-bottom:10px}.article-content pre{background:#f5f5f5;border-left:4px solid var(--primary);border-radius:10px;margin:20px 0;overflow-x:auto;padding:20px}.article-content code{background:var(--primary-light);border-radius:4px;font-family:Consolas,Monaco,monospace;font-size:.95rem;padding:2px 6px}.article-content pre code{background:none;padding:0}.article-content img{border-radius:10px;box-shadow:0 5px 20px #0000001a;height:auto;margin:20px 0;max-width:100%}.article-content blockquote{background:var(--primary-light);border-left:4px solid var(--primary);border-radius:0 10px 10px 0;margin:20px 0;padding:20px}.article-content blockquote p{font-style:italic;margin:0}.article-content hr{border:none;border-top:2px solid var(--card-border);margin:40px 0}.article-content button{background:var(--primary);border:none;border-radius:30px;color:#fff;cursor:pointer;font-size:18px;margin:20px 0;padding:15px 40px;transition:var(--transition)}.article-content button:hover{background:var(--primary-dark);box-shadow:0 10px 25px #0003;transform:translateY(-2px)}.course-template-header{background:var(--card-bg);border-bottom:2px solid var(--card-border);position:relative}.header-content{justify-content:space-between;padding:20px 30px}.breadcrumb,.header-content{align-items:center;display:flex}.breadcrumb{color:var(--text-secondary);font-size:.95rem;gap:8px}.separator{color:var(--primary)}.progress-info{color:var(--text-secondary);font-size:.9rem;font-weight:500}.progress-bar{background:var(--card-border);bottom:0;height:4px;left:0;position:absolute;right:0}.progress-fill{background:var(--primary);height:100%;transition:width .3s ease}.course-template-main{display:flex;flex:1 1;overflow:hidden}.instruction-panel{background:var(--card-bg);border-right:2px solid var(--card-border);overflow-y:auto;padding:30px;width:40%}.instruction-header{margin-bottom:30px}.instruction-header 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