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var(--color-text-primary);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--radius-sm: .375rem;--radius-md: .625rem;--radius-lg: .875rem;--radius-xl: 1.25rem;--radius-full: 9999px;--transition-base: .3s cubic-bezier(.4, 0, .2, 1);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-slow: .5s cubic-bezier(.4, 0, .2, 1);--shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, .5)}[data-theme=light]{--color-bg-primary: #f8fafc;--color-bg-secondary: #f1f5f9;--color-bg-tertiary: #e2e8f0;--color-bg-elevated: rgba(255, 255, 255, .8);--color-bg-card: rgba(255, 255, 255, .9);--color-bg-hover: rgba(241, 245, 249, .6);--color-text-primary: #0f172a;--color-text-secondary: #334155;--color-text-muted: #64748b;--color-text-disabled: #94a3b8;--color-text: var(--color-text-primary);--color-accent: #4f46e5;--color-accent-hover: #4338ca;--color-accent-glow: rgba(79, 70, 229, .1);--color-accent-soft: rgba(79, 70, 229, .1);--glass-bg: rgba(255, 255, 255, .7);--color-border: rgba(0, 0, 0, .06);--color-border-focus: rgba(79, 70, 229, .3);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .05), 0 4px 6px -2px rgba(0, 0, 0, .02);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .08), 0 10px 10px -5px rgba(0, 0, 0, .04)}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--color-bg-primary);color:var(--color-text-primary);line-height:normal;overflow-x:hidden;position:relative}body:before{content:"";position:fixed;top:0;left:0;width:100vw;height:100vh;background:radial-gradient(circle at 0% 0%,rgba(99,102,241,.15) 0%,transparent 40%),radial-gradient(circle at 100% 100%,rgba(139,92,246,.15) 0%,transparent 40%),radial-gradient(circle at 100% 0%,rgba(99,102,241,.1) 0%,transparent 30%),radial-gradient(circle at 0% 100%,rgba(139,92,246,.1) 0%,transparent 30%);z-index:-1;pointer-events:none}[data-theme=light] body:before{background:radial-gradient(circle at 0% 0%,rgba(79,70,229,.05) 0%,transparent 40%),radial-gradient(circle at 100% 100%,rgba(124,58,237,.05) 0%,transparent 40%)}#root{position:relative;z-index:1}:root{--text-xs: .6875rem;--text-sm: .8125rem;--text-base: .9375rem;--text-md: 1rem;--text-lg: 1.125rem;--text-xl: 1.375rem;--text-2xl: 1.75rem;--text-3xl: 2.25rem;--text-4xl: 3rem;--font-light: 300;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--leading-tight: 1.25;--leading-snug: 1.375;--leading-normal: 1.5;--leading-relaxed: 1.625;--leading-loose: 1.75;--tracking-tighter: -.03em;--tracking-tight: -.015em;--tracking-normal: 0;--tracking-wide: .015em;--tracking-wider: .05em}h1,h2,h3,h4,h5,h6{font-weight:var(--font-semibold);line-height:var(--leading-tight);letter-spacing:var(--tracking-tight);color:var(--color-text-primary);margin:0}h1{font-size:var(--text-4xl);font-weight:var(--font-bold);letter-spacing:var(--tracking-tighter)}h2{font-size:var(--text-3xl);font-weight:var(--font-semibold)}h3{font-size:var(--text-2xl);font-weight:var(--font-semibold)}h4{font-size:var(--text-xl);font-weight:var(--font-medium)}h5{font-size:var(--text-lg);font-weight:var(--font-medium)}h6{font-size:var(--text-base);font-weight:var(--font-medium);text-transform:uppercase;letter-spacing:var(--tracking-wide)}p{font-size:var(--text-base);line-height:var(--leading-relaxed);color:var(--color-text-secondary);margin:0}.text-xs{font-size:var(--text-xs)}.text-sm{font-size:var(--text-sm)}.text-base{font-size:var(--text-base)}.text-lg{font-size:var(--text-lg)}.text-xl{font-size:var(--text-xl)}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.text-secondary{color:var(--color-text-secondary)}.font-light{font-weight:var(--font-light)}.font-normal{font-weight:var(--font-normal)}.font-medium{font-weight:var(--font-medium)}.font-semibold{font-weight:var(--font-semibold)}.font-bold{font-weight:var(--font-bold)}.uppercase{text-transform:uppercase;letter-spacing:var(--tracking-wider)}.tracking-tight{letter-spacing:var(--tracking-tight)}.tracking-wide{letter-spacing:var(--tracking-wide)}.inline-icon{display:inline-block;vertical-align:middle;margin-right:var(--spacing-sm);color:var(--color-accent)}.spin-icon{animation:spin 2s linear infinite}.card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-2xl);box-shadow:var(--shadow-lg);transition:all var(--transition-base)}.card:hover{border-color:var(--color-border-focus);transform:translateY(-2px);box-shadow:var(--shadow-xl)}.card-primary{background:var(--color-bg-elevated);border:1px solid var(--color-border)}.card-glow{box-shadow:var(--shadow-xl)}.card-header{display:flex;align-items:flex-start;gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.card-header-icon{flex-shrink:0;color:var(--color-accent)}.card-title{font-size:1.5rem;font-weight:700;margin-bottom:var(--spacing-xs);color:var(--color-text-primary)}.card-subtitle{font-size:.875rem;color:var(--color-text-muted);line-height:1.5}.alert{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);font-size:.875rem;font-weight:500;border:1px solid;background:var(--color-bg-elevated)}.alert-success,.alert-error{border-color:var(--color-border-focus);color:var(--color-text-primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:.75rem 1.5rem;font-size:.875rem;font-weight:600;border-radius:var(--radius-lg);border:1px solid var(--color-border);cursor:pointer;transition:all var(--transition-base);text-decoration:none;font-family:inherit;white-space:nowrap;position:relative;overflow:hidden;background:var(--color-bg-elevated);color:var(--color-text-primary)}.btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn:active:not(:disabled){transform:translateY(0)}.btn:disabled{opacity:.4;cursor:not-allowed;filter:grayscale(.5)}.btn-primary{background:linear-gradient(135deg,var(--color-accent),var(--color-accent-secondary));color:#fff;border:none;box-shadow:0 4px 12px #6366f14d}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--color-accent-hover),var(--color-accent-secondary));box-shadow:0 8px 20px #6366f166,var(--shadow-glow)}.btn-secondary{background:var(--color-bg-elevated);color:var(--color-text-primary);border:var(--glass-border);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur)}.btn-secondary:hover:not(:disabled){background:var(--color-bg-hover);border-color:var(--color-border-focus)}.btn-outline{background:transparent;border:1px solid var(--color-border);color:var(--color-text-primary)}.btn-outline:hover:not(:disabled){background:var(--color-bg-elevated);border-color:var(--color-border-focus)}.btn-large{padding:1.125rem 2.5rem;font-size:1rem;width:100%;letter-spacing:.01em}.btn-icon{display:inline-flex;align-items:center;gap:var(--spacing-sm)}.info-box{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.info-box-header{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--color-text-primary);font-size:.875rem;font-weight:600;margin-bottom:var(--spacing-md)}.info-list{font-size:.875rem;color:var(--color-text-secondary);line-height:1.8;padding-left:1.25rem;margin:0}.info-list li{margin-bottom:var(--spacing-xs)}.upload-area{display:block;cursor:pointer;transition:all var(--transition-base);margin-bottom:var(--spacing-lg)}.upload-content{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-3xl);border:2px dashed var(--color-border);border-radius:var(--radius-xl);background:var(--color-bg-secondary);transition:all var(--transition-base)}.upload-area:hover .upload-content{border-color:var(--color-border-focus);background:var(--color-bg-tertiary);transform:translateY(-2px)}.upload-icon-wrapper{margin-bottom:var(--spacing-lg)}.upload-icon-main,.file-icon{color:var(--color-accent);transition:all var(--transition-base)}.upload-area:hover .upload-icon-main,.upload-area:hover .file-icon{transform:scale(1.05);color:var(--color-accent-hover)}.spinner{animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.7;transform:scale(1.05)}}.upload-text{font-size:1rem;font-weight:600;color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.upload-hint{font-size:.75rem;color:var(--color-text-muted)}.progress-bar{width:100%;height:.75rem;background:var(--color-bg-secondary);border-radius:var(--radius-full);overflow:hidden;position:relative;border:1px solid var(--color-border)}.progress-fill{height:100%;background:var(--color-text-primary);border-radius:var(--radius-full);transition:width var(--transition-slow);position:relative;display:flex;align-items:center;justify-content:flex-end;padding-right:var(--spacing-sm)}.progress-percentage{font-size:.625rem;font-weight:700;color:var(--color-bg-primary);position:relative;z-index:1}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-2xl)}.feature-card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-xl);transition:all var(--transition-base)}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:var(--color-border-focus)}.feature-icon{width:56px;height:56px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-lg);transition:all var(--transition-base);background:var(--color-bg-elevated);border:1px solid var(--color-border);color:var(--color-accent)}.feature-icon-purple,.feature-icon-cyan,.feature-icon-green{background:var(--color-bg-elevated);color:var(--color-accent);border:1px solid var(--color-border)}.feature-card:hover .feature-icon{transform:scale(1.05);border-color:var(--color-border-focus)}.feature-title{font-size:var(--text-md);font-weight:var(--font-semibold);color:var(--color-text-primary);margin-bottom:var(--spacing-sm);line-height:var(--leading-snug);letter-spacing:var(--tracking-tight)}.feature-text{font-size:var(--text-sm);font-weight:var(--font-normal);color:var(--color-text-secondary);line-height:var(--leading-relaxed)}.dashboard{min-height:100vh;padding-bottom:var(--spacing-3xl);background:var(--color-bg-primary)}.dashboard-header{background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border);padding:var(--spacing-xl) 0;margin-bottom:var(--spacing-2xl)}.dashboard-header-content{max-width:1200px;margin:0 auto;padding:0 var(--spacing-xl);display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-lg)}.dashboard-greeting{flex:1}.greeting-title{font-size:var(--text-3xl);font-weight:var(--font-semibold);margin-bottom:var(--spacing-xs);display:flex;align-items:center;gap:var(--spacing-md);color:var(--color-text-primary);letter-spacing:var(--tracking-tight)}.greeting-subtitle{font-size:var(--text-sm);font-weight:var(--font-normal);color:var(--color-text-muted)}.dashboard-user{display:flex;align-items:center;gap:var(--spacing-md)}.user-avatar{width:48px;height:48px;border-radius:var(--radius-full);background:var(--color-bg-elevated);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-size:1.25rem;font-weight:700;color:var(--color-text-primary)}.dashboard-content{max-width:1200px;margin:0 auto;padding:0 var(--spacing-xl)}.quiz-page{min-height:100vh;padding:1.5rem 1rem;background:var(--color-bg-primary);display:flex;align-items:center;justify-content:center}.quiz-container{max-width:800px;margin:0 auto}.quiz-container-minimal{max-width:700px;width:100%}.loading-state{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);padding:var(--spacing-3xl);color:var(--color-text-muted)}.loading-spinner{animation:spin 1s linear infinite;color:var(--color-accent)}.quiz-header-minimal{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.btn-minimal{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-base);font-family:inherit}.btn-minimal:hover{background:var(--color-bg-elevated);border-color:var(--color-border-focus);color:var(--color-text-primary)}.quiz-meta{display:flex;gap:var(--spacing-sm)}.quiz-type-badge{padding:.375rem .75rem;font-size:var(--text-xs);font-weight:var(--font-semibold);color:var(--color-text-secondary);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:var(--tracking-wider)}.quiz-progress-minimal{margin-bottom:1.5rem}.progress-dots{display:flex;gap:var(--spacing-sm);justify-content:center;margin-bottom:.5rem}.progress-dot{width:8px;height:8px;border-radius:50%;background:var(--color-bg-elevated);border:1px solid var(--color-border);transition:all var(--transition-base)}.progress-dot.active{background:var(--color-text-primary);border-color:var(--color-text-primary);transform:scale(1.25)}.progress-dot.answered{background:var(--color-accent);border-color:var(--color-accent)}.progress-text-minimal{text-align:center;font-size:.75rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.quiz-question-minimal{margin-bottom:1.25rem}.question-text-minimal{font-size:1.25rem;font-weight:700;color:var(--color-text-primary);margin-bottom:1.5rem;line-height:1.35;text-align:center}.quiz-options-grid{display:grid;gap:var(--spacing-md)}.quiz-option-minimal{display:flex;align-items:center;gap:var(--spacing-md);padding:.75rem 1rem;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:12px;cursor:pointer;transition:all var(--transition-fast);text-align:left;font-family:inherit;width:100%}.quiz-option-minimal:hover{border-color:var(--color-border-focus);background:var(--color-bg-hover);transform:translate(4px)}.quiz-option-minimal.selected{border-color:var(--color-text-primary);background:var(--color-bg-elevated)}.option-indicator{width:28px;height:28px;border-radius:50%;background:var(--color-bg-elevated);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--transition-base)}.quiz-option-minimal.selected .option-indicator{background:var(--color-text-primary);border-color:var(--color-text-primary);color:var(--color-bg-primary)}.option-letter{font-size:.875rem;font-weight:600;color:var(--color-text-muted)}.quiz-option-minimal.selected .option-letter{color:var(--color-bg-primary)}.option-text{font-size:.9375rem;color:var(--color-text-secondary);line-height:1.5;flex:1}.quiz-option-minimal.selected .option-text{color:var(--color-text-primary);font-weight:500}.quiz-navigation-minimal{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md);margin-top:var(--spacing-3xl);padding-top:var(--spacing-xl);border-top:1px solid var(--color-border)}.nav-center-info{flex:1;text-align:center}.answered-count{font-size:.75rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.quiz-progress{margin-bottom:var(--spacing-2xl)}.quiz-progress-text{font-size:.875rem;color:var(--color-text-muted);font-weight:600}.quiz-question-card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-2xl);margin-bottom:var(--spacing-xl);box-shadow:var(--shadow-lg)}.quiz-question-text{font-size:1.25rem;font-weight:600;color:var(--color-text-primary);margin-bottom:var(--spacing-xl);line-height:1.5}.quiz-option{background:var(--color-bg-elevated);border:2px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-md);cursor:pointer;transition:all var(--transition-base)}.quiz-option:hover{border-color:var(--color-border-focus);background:var(--color-bg-hover);transform:translate(4px)}.quiz-option.selected{border-color:var(--color-text-primary);background:var(--color-bg-tertiary)}.quiz-option-text{font-size:var(--text-base);font-weight:var(--font-normal);color:var(--color-text-secondary);line-height:var(--leading-relaxed);margin:0}.quiz-option.selected .quiz-option-text{color:var(--color-text-primary);font-weight:var(--font-semibold)}.quiz-navigation{display:flex;justify-content:space-between;gap:var(--spacing-md);margin-top:var(--spacing-xl)}.results-page{min-height:100vh;padding:var(--spacing-2xl) var(--spacing-xl);background:var(--color-bg-primary)}.results-container{max-width:900px;margin:0 auto}.empty-results-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;min-height:60vh;padding:var(--spacing-3xl)}.empty-results-icon{width:120px;height:120px;border-radius:var(--radius-2xl);background:var(--color-bg-elevated);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-xl);color:var(--color-accent)}.empty-results-state h2{font-size:1.5rem;font-weight:600;color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.empty-results-state p{font-size:.9375rem;color:var(--color-text-muted);max-width:400px;line-height:1.6}.results-header-minimal{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-2xl)}.results-meta{display:flex;gap:var(--spacing-sm)}.results-badge{padding:.375rem .75rem;font-size:.75rem;font-weight:600;color:var(--color-text-secondary);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em}.results-document-info{text-align:center;margin-bottom:var(--spacing-3xl)}.results-document-info h1{font-size:2rem;font-weight:700;color:var(--color-text-primary);margin-bottom:var(--spacing-md)}.document-name{display:inline-flex;align-items:center;gap:var(--spacing-sm);font-size:.9375rem;color:var(--color-text-secondary);margin-bottom:var(--spacing-xs)}.completion-time{font-size:.8125rem;color:var(--color-text-muted)}.results-section{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-2xl);margin-bottom:var(--spacing-xl);box-shadow:var(--shadow-lg)}.section-header-results{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-xl);padding-bottom:var(--spacing-md);border-bottom:1px solid var(--color-border)}.section-header-results svg{color:var(--color-accent)}.section-header-results h2{font-size:1.25rem;font-weight:600;color:var(--color-text-primary);margin:0}.score-summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-xl)}.score-card-main,.accuracy-card-main{display:flex;flex-direction:column;align-items:center;padding:var(--spacing-xl);background:var(--color-bg-elevated);border:1px solid 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var(--color-accent);border-radius:var(--radius-lg);overflow:hidden}.guidance-header{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--color-bg-tertiary);border-bottom:1px solid var(--color-border)}.guidance-header svg{color:var(--color-accent);flex-shrink:0}.guidance-header h3{font-size:1.125rem;font-weight:600;color:var(--color-text-primary);margin:0}.guidance-content{padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-lg)}.guidance-row{display:flex;flex-direction:column;gap:var(--spacing-sm)}.guidance-label{font-size:.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.guidance-value{display:flex;align-items:center;gap:var(--spacing-sm);font-size:.9375rem;color:var(--color-text-primary);font-weight:500}.level-badge{display:inline-flex;padding:.375rem .75rem;background:var(--color-bg-tertiary);border:1px solid var(--color-border);border-radius:var(--radius-full);font-size:.875rem;font-weight:600;color:var(--color-text-primary)}.priority-topics-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--spacing-sm)}.priority-topics-list li{display:flex;align-items:flex-start;gap:var(--spacing-sm);font-size:.9375rem;color:var(--color-text-secondary);line-height:1.5;padding-left:var(--spacing-md);position:relative}.priority-topics-list li:before{content:"•";position:absolute;left:0;color:var(--color-accent);font-weight:700}.guidance-action{padding-top:var(--spacing-md);border-top:1px solid var(--color-border)}.next-action-text{font-size:.9375rem;color:var(--color-text-secondary);line-height:1.6;margin:var(--spacing-sm) 0 0 0;font-style:italic}.theme-toggle{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:.375rem;cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;justify-content:center;color:var(--color-text-secondary)}.theme-toggle:hover{background:var(--color-bg-hover);border-color:var(--color-border-focus);color:var(--color-text-primary)}.theme-toggle svg{width:20px;height:20px}.topic-summary-container{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-xl);margin-top:var(--spacing-lg)}.topic-summary-header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-xs)}.topic-summary-header h3{font-size:var(--text-lg);font-weight:var(--font-semibold);color:var(--color-text-primary);margin:0;letter-spacing:var(--tracking-tight)}.topic-summary-header svg{color:var(--color-accent)}.topic-summary-subtitle{font-size:var(--text-sm);font-weight:var(--font-normal);color:var(--color-text-muted);margin:var(--spacing-xs) 0 var(--spacing-lg) 0;line-height:var(--leading-relaxed)}.topics-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-md)}.topic-card{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);transition:all var(--transition-base);position:relative;overflow:hidden}.topic-card:hover{border-color:var(--color-border-focus);transform:translateY(-2px);box-shadow:var(--shadow-md)}.topic-number{position:absolute;top:var(--spacing-md);right:var(--spacing-md);width:26px;height:26px;background:var(--color-accent-light);color:var(--color-accent);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:var(--text-xs);font-weight:var(--font-bold)}.topic-title{font-size:var(--text-base);font-weight:var(--font-semibold);color:var(--color-text-primary);margin:0 0 var(--spacing-sm) 0;padding-right:var(--spacing-xl);line-height:var(--leading-snug);letter-spacing:var(--tracking-tight)}.topic-summary{font-size:var(--text-sm);font-weight:var(--font-normal);color:var(--color-text-secondary);line-height:var(--leading-relaxed);margin:0 0 var(--spacing-md) 0}.topic-points{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--spacing-xs)}.topic-points li{font-size:var(--text-xs);font-weight:var(--font-normal);color:var(--color-text-muted);line-height:var(--leading-relaxed);padding-left:var(--spacing-md);position:relative}.topic-points li:before{content:"→";position:absolute;left:0;color:var(--color-accent);font-weight:600}@media(max-width:768px){.topics-grid{grid-template-columns:1fr}.topic-summary-container{padding:var(--spacing-lg)}}.app-layout{display:flex;min-height:100vh;background:transparent}.app-main{flex:1;min-width:0;padding:var(--spacing-2xl);overflow-y:auto;display:flex;flex-direction:column}.intelligence-mode.app-main{height:100vh;overflow:hidden;padding:1.25rem 1.5rem}.intelligence-mode .page-header{flex-shrink:0;position:relative;margin-bottom:1rem;border-bottom:1px solid var(--color-border);padding-bottom:.75rem}.intelligence-mode .tutor-layout{flex:1;min-height:0;display:grid;grid-template-columns:1fr 260px;gap:1.25rem}.chat-window{display:flex;flex-direction:column;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:16px;overflow:hidden}.chat-messages{flex:1;overflow-y:auto;padding:1.25rem;display:flex;flex-direction:column;gap:.75rem;scrollbar-width:thin;scrollbar-color:var(--color-border) transparent}.sidebar{width:240px;min-height:100vh;background:#0a0a14cc;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-right:1px solid rgba(255,255,255,.05);display:flex;flex-direction:column;padding:var(--spacing-lg) 0;transition:all var(--transition-base);position:sticky;top:0;height:100vh;flex-shrink:0;z-index:100}[data-theme=light] .sidebar{background:#fffc;border-right:1px solid rgba(0,0,0,.05)}.sidebar-collapsed{width:68px}.sidebar-logo{display:flex;align-items:center;gap:var(--spacing-md);padding:0 var(--spacing-lg) var(--spacing-lg);border-bottom:1px solid var(--color-border);margin-bottom:var(--spacing-md)}.sidebar-logo-icon{width:36px;height:36px;border-radius:var(--radius-md);background:var(--color-bg-elevated);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;color:var(--color-text-primary);flex-shrink:0}.sidebar-logo-text{font-size:var(--text-lg);font-weight:var(--font-bold);letter-spacing:var(--tracking-tight);color:var(--color-text-primary)}.sidebar-toggle{position:absolute;top:var(--spacing-lg);right:-12px;width:24px;height:24px;border-radius:var(--radius-full);background:var(--color-bg-elevated);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--color-text-muted);z-index:10;transition:all var(--transition-fast)}.sidebar-toggle:hover{color:var(--color-text-primary);border-color:var(--color-border-focus)}.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:2px;padding:0 var(--spacing-sm);overflow-y:auto}.sidebar-nav-item{display:flex;align-items:center;gap:var(--spacing-md);padding:.6rem var(--spacing-md);border-radius:var(--radius-md);border:none;background:transparent;color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--font-medium);font-family:inherit;cursor:pointer;text-decoration:none;transition:all var(--transition-fast);white-space:nowrap;overflow:hidden;width:100%;text-align:left}.sidebar-nav-item:hover{background:var(--color-bg-hover);color:var(--color-text-primary)}.sidebar-nav-item-active{background:var(--color-bg-elevated);color:var(--color-text-primary);border:1px solid var(--color-border)}.sidebar-nav-icon{flex-shrink:0}.sidebar-nav-label{overflow:hidden;text-overflow:ellipsis}.sidebar-bottom{display:flex;flex-direction:column;gap:2px;padding:var(--spacing-md) var(--spacing-sm) 0;border-top:1px solid var(--color-border);margin-top:var(--spacing-md)}.sidebar-user{display:flex;align-items:center;gap:var(--spacing-md);padding:.6rem var(--spacing-md)}.sidebar-user-avatar{width:28px;height:28px;border-radius:var(--radius-full);background:var(--color-bg-elevated);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-size:var(--text-xs);font-weight:var(--font-bold);color:var(--color-text-primary);flex-shrink:0}.sidebar-user-info{overflow:hidden}.sidebar-user-email{font-size:var(--text-xs);color:var(--color-text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block}.sidebar-logout-btn{color:var(--color-text-muted)}.sidebar-logout-btn:hover{color:var(--color-text-primary)}.page-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--spacing-2xl);padding-bottom:var(--spacing-xl);border-bottom:1px solid var(--color-border)}.page-title{font-size:1.5rem;font-weight:800;letter-spacing:-.015em;color:var(--color-text-primary);margin-bottom:.25rem}.page-subtitle{font-size:var(--text-sm);color:var(--color-text-muted);margin:0}.page-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-md);padding:var(--spacing-3xl);color:var(--color-text-muted)}.empty-page-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-md);padding:var(--spacing-3xl);text-align:center;color:var(--color-text-muted)}.empty-page-state h2{font-size:var(--text-xl);color:var(--color-text-primary)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-xs)}.form-label{font-size:var(--text-sm);font-weight:var(--font-medium);color:var(--color-text-secondary)}.form-input{padding:.65rem var(--spacing-md);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-primary);font-size:var(--text-sm);font-family:inherit;transition:border-color var(--transition-fast);outline:none}.form-input:focus{border-color:var(--color-border-focus)}.form-error{font-size:var(--text-sm);color:var(--color-text-secondary);padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-md);margin-top:var(--spacing-sm)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-xl{margin-top:var(--spacing-xl)}.mt-2xl{margin-top:var(--spacing-2xl)}.tutor-layout{display:grid;grid-template-columns:1fr 280px;gap:var(--spacing-xl);height:100%}.chat-window{display:flex;flex-direction:column;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-xl);overflow:hidden}.chat-messages{flex:1;overflow-y:auto;padding:var(--spacing-xl);display:flex;flex-direction:column;gap:var(--spacing-lg);scrollbar-width:thin;scrollbar-color:var(--color-border) transparent}.chat-bubble-row{display:flex;align-items:flex-end;gap:var(--spacing-sm)}.chat-row-user{flex-direction:row-reverse}.chat-avatar{width:28px;height:28px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:var(--text-xs);font-weight:var(--font-bold);flex-shrink:0}.chat-avatar-ai{background:var(--color-bg-elevated);border:1px solid var(--color-border);color:var(--color-text-secondary)}.chat-avatar-user{background:var(--color-text-primary);color:var(--color-bg-primary)}.chat-bubble{max-width:80%;padding:.75rem 1rem;border-radius:12px;font-size:.825rem;line-height:1.55;box-shadow:0 1px 4px #00000008}.chat-bubble-ai{background:var(--color-bg-elevated);border:1px solid var(--color-border);color:var(--color-text-primary)}.chat-bubble-user{background:linear-gradient(135deg,var(--color-accent),var(--color-accent-secondary));color:#fff;box-shadow:0 4px 12px #6366f133;border:none}.chat-bubble-user p{color:#fff!important}.chat-bubble-loading{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--color-text-muted)}.chat-input-area{display:flex;align-items:flex-end;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid var(--color-border);background:var(--color-bg-secondary)}.chat-input{flex:1;padding:.65rem var(--spacing-md);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);color:var(--color-text-primary);font-size:var(--text-sm);font-family:inherit;resize:none;outline:none;line-height:1.5;max-height:120px;transition:border-color var(--transition-fast)}.chat-input:focus{border-color:var(--color-border-focus)}.chat-send-btn{width:40px;height:40px;border-radius:var(--radius-lg);background:var(--color-text-primary);border:none;color:var(--color-bg-primary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);flex-shrink:0}.chat-send-btn:hover:not(:disabled){opacity:.85}.chat-send-btn:disabled{opacity:.4;cursor:not-allowed}.tutor-sidebar-panel{display:flex;flex-direction:column;gap:var(--spacing-md);overflow-y:auto}.tutor-tip-card{background:var(--color-bg-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:var(--glass-border);border-radius:24px;padding:1.5rem;margin-bottom:var(--spacing-md)}.tutor-tip-title{font-size:var(--text-sm);font-weight:var(--font-semibold);color:var(--color-text-primary);margin-bottom:var(--spacing-md)}.tutor-tip-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--spacing-sm)}.tutor-tip-list li{font-size:var(--text-xs);color:var(--color-text-muted);line-height:1.5;padding-left:var(--spacing-md);position:relative}.tutor-tip-list li:before{content:"";position:absolute;left:0;top:.45em;width:4px;height:4px;border-radius:50%;background:var(--color-border-focus)}.tutor-suggestion-btn{display:block;width:100%;text-align:left;padding:.85rem 1.125rem;margin-bottom:.75rem;background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:12px;color:var(--color-text-primary);font-size:.825rem;font-weight:500;font-family:inherit;cursor:pointer;transition:all var(--transition-fast)}.tutor-suggestion-btn:hover{transform:translateY(-2px);border-color:var(--color-accent);background:var(--color-bg-hover);box-shadow:0 4px 12px #6366f11a}.planner-config-card{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-xl);margin-bottom:var(--spacing-2xl)}.planner-doc-badge{display:inline-flex;align-items:center;gap:var(--spacing-xs);font-size:var(--text-xs);color:var(--color-text-muted);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:var(--spacing-xs) var(--spacing-md);margin-bottom:var(--spacing-lg)}.planner-form{display:grid;grid-template-columns:1fr 1fr auto;align-items:end;gap:var(--spacing-md)}.planner-countdown{display:flex;align-items:baseline;gap:var(--spacing-xs);margin-top:var(--spacing-lg)}.countdown-number{font-size:var(--text-3xl);font-weight:var(--font-bold);letter-spacing:var(--tracking-tighter);color:var(--color-text-primary)}.countdown-label{font-size:var(--text-sm);color:var(--color-text-muted)}.planner-output{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-xl)}.planner-output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-sm)}.planner-output-title{font-size:var(--text-xl);font-weight:var(--font-semibold);color:var(--color-text-primary)}.planner-output-meta{font-size:var(--text-xs);color:var(--color-text-muted);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:var(--spacing-xs) var(--spacing-md)}.planner-overview{font-size:var(--text-sm);color:var(--color-text-muted);margin-bottom:var(--spacing-lg)}.planner-progress-row{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-xl)}.planner-progress-label{font-size:var(--text-xs);color:var(--color-text-muted);white-space:nowrap}.planner-progress-bar{flex:1;height:4px;background:var(--color-bg-elevated);border-radius:var(--radius-full);overflow:hidden}.planner-progress-fill{height:100%;background:var(--color-text-primary);border-radius:var(--radius-full);transition:width var(--transition-slow)}.plan-days-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.plan-day-card{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;transition:border-color var(--transition-fast)}.plan-day-done{opacity:.6}.plan-day-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) var(--spacing-lg);cursor:pointer}.plan-day-header:hover{background:var(--color-bg-hover)}.plan-day-left{display:flex;align-items:center;gap:var(--spacing-md)}.plan-day-right{display:flex;align-items:center;gap:var(--spacing-md);color:var(--color-text-muted)}.plan-day-check{background:none;border:1.5px solid var(--color-border);border-radius:var(--radius-full);width:28px;height:28px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--color-border-focus);transition:all var(--transition-fast);flex-shrink:0}.plan-day-check.checked{background:var(--color-text-primary);border-color:var(--color-text-primary);color:var(--color-bg-primary)}.plan-day-label{font-size:var(--text-xs);color:var(--color-text-muted);font-weight:var(--font-medium);text-transform:uppercase;letter-spacing:var(--tracking-wider)}.plan-day-topic{font-size:var(--text-sm);font-weight:var(--font-medium);color:var(--color-text-primary)}.plan-day-duration{font-size:var(--text-xs);color:var(--color-text-muted)}.plan-day-body{padding:0 var(--spacing-lg) var(--spacing-lg);border-top:1px solid var(--color-border)}.plan-day-goal{font-size:var(--text-sm);color:var(--color-text-secondary);margin:var(--spacing-md) 0;font-style:italic}.plan-task-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--spacing-xs)}.plan-task-item{font-size:var(--text-sm);color:var(--color-text-secondary);padding-left:var(--spacing-lg);position:relative;line-height:1.5}.plan-task-item:before{content:"";position:absolute;left:var(--spacing-xs);top:.55em;width:5px;height:5px;border-radius:50%;border:1.5px solid var(--color-border-focus)}.flashcard-setup{display:flex;justify-content:center;padding-top:var(--spacing-2xl)}.flashcard-setup-card{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-2xl);max-width:480px;width:100%;text-align:center}.setup-title{font-size:var(--text-2xl);font-weight:var(--font-semibold);color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.setup-subtitle{font-size:var(--text-sm);color:var(--color-text-muted)}.flashcard-header-actions{display:flex;gap:var(--spacing-sm)}.flashcard-study{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xl);padding-bottom:var(--spacing-2xl)}.flashcard-stats-row{display:flex;align-items:center;gap:var(--spacing-xl);width:100%;justify-content:flex-start}.flashcard-stat{display:flex;flex-direction:column;align-items:center;gap:2px}.flashcard-stat-value{font-size:var(--text-xl);font-weight:var(--font-bold);color:var(--color-text-primary)}.flashcard-stat-label{font-size:var(--text-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:var(--tracking-wider)}.flashcard-mode-toggle{margin-left:auto;display:flex;background:var(--color-bg-elevated);border:1px 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var(--transition-slow)}.flashcard-wrapper{width:100%;max-width:580px;height:320px;perspective:1200px;cursor:pointer}.flashcard-inner{width:100%;height:100%;position:relative;transform-style:preserve-3d;transition:transform .5s cubic-bezier(.4,0,.2,1)}.flashcard-wrapper.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:var(--radius-xl);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);border:1px solid 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var(--color-border);border-radius:var(--radius-full);color:var(--color-text-secondary)}.db-next-action{display:flex;align-items:flex-start;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);background:var(--color-bg-elevated)}.db-next-action svg{color:var(--color-accent);flex-shrink:0;margin-top:.1rem}.db-next-action p{font-size:.8125rem;color:var(--color-text-secondary);line-height:1.6;margin:0;font-style:italic}.db-perf-card{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);transition:all var(--transition-fast)}.db-perf-card:hover{border-color:var(--color-border-focus);transform:translateY(-1px)}.db-perf-icon{width:36px;height:36px;border-radius:var(--radius-lg);background:var(--color-bg-elevated);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;color:var(--color-accent);flex-shrink:0}.db-perf-title{font-size:.875rem;font-weight:700;color:var(--color-text-primary);letter-spacing:-.01em;margin-bottom:.15rem}.db-perf-sub{font-size:.75rem;color:var(--color-text-muted)}.btn-sm{padding:.4rem .875rem;font-size:.8125rem}.quick-access-row{display:flex;gap:var(--spacing-sm);flex-wrap:wrap;margin-bottom:var(--spacing-xl)}.quick-access-card{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--font-medium);text-decoration:none;transition:all var(--transition-fast);white-space:nowrap}.quick-access-card:hover{border-color:var(--color-border-focus);color:var(--color-text-primary);transform:translateY(-1px)}.markdown-content{font-family:inherit;line-height:1.7;color:var(--color-text-primary)}.markdown-content h1,.markdown-content h2,.markdown-content h3{margin-top:1.5rem;margin-bottom:1rem;font-weight:700;color:var(--color-text-primary);line-height:1.3}.markdown-content h1{font-size:1.5rem;border-bottom:1px solid var(--color-border);padding-bottom:.5rem}.markdown-content h2{font-size:1.3rem}.markdown-content h3{font-size:1.15rem}.markdown-content p{margin-bottom:1.25rem}.markdown-content strong{font-weight:800;color:var(--color-text-primary)}.markdown-content ul,.markdown-content ol{margin-bottom:1.25rem;padding-left:1.5rem}.markdown-content li{margin-bottom:.6rem}.markdown-content code{background:#ffffff1a;padding:.2rem .4rem;border-radius:4px;font-family:SFMono-Regular,Consolas,Liberation 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