body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}*{box-sizing:border-box;margin:0;padding:0}:root{--primary-gradient:linear-gradient(135deg,#667eea,#764ba2);--secondary-gradient:linear-gradient(135deg,#f093fb,#f5576c);--accent-gradient:linear-gradient(135deg,#4facfe,#00f2fe);--success-gradient:linear-gradient(135deg,#43e97b,#38f9d7);--text-primary:#2d3748;--text-secondary:#4a5568;--text-muted:#718096;--background:#f7fafc;--surface:#fff;--border:#e2e8f0;--shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;--radius:12px;--radius-lg:16px}body{background:#f7fafc;background:var(--background);color:#2d3748;color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6}.App{margin:0 auto;max-width:1200px;min-height:100vh;padding:1rem}.login-container{align-items:center;display:flex;justify-content:center;min-height:100vh;padding:2rem}.login-card{animation:slideUp .6s ease-out;background:#fff;background:var(--surface);border-radius:16px;border-radius:var(--radius-lg);box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;box-shadow:var(--shadow-lg);max-width:480px;padding:3rem;width:100%}.login-header{align-items:center;display:flex;gap:1rem;margin-bottom:2rem}.login-logo svg{filter:drop-shadow(0 2px 4px rgba(0,0,0,.1))}.login-text{flex:1 1}.login-title{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#667eea,#764ba2);background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;font-size:1.875rem;font-weight:700;margin-bottom:.25rem}.login-institute{color:#4a5568;color:var(--text-secondary);font-size:.875rem;font-weight:500}.login-content{text-align:center}.login-welcome{color:#2d3748;color:var(--text-primary);font-size:1.5rem;font-weight:600;margin-bottom:.5rem}.login-subtitle{color:#718096;color:var(--text-muted);line-height:1.5}.login-btn-wrapper,.login-subtitle{margin-bottom:2rem}.login-features{border-top:1px solid #e2e8f0;border-top:1px solid var(--border);display:flex;gap:1rem;justify-content:space-around;margin-top:2rem;padding-top:2rem}.feature-item{align-items:center;color:#4a5568;color:var(--text-secondary);display:flex;flex-direction:column;font-size:.875rem;gap:.5rem;text-align:center}.feature-icon{font-size:1.5rem}.page-header{background:#fff;background:var(--surface);border-radius:16px;border-radius:var(--radius-lg);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;box-shadow:var(--shadow);margin-bottom:2rem;padding:1.5rem}.header-nav{gap:1rem;justify-content:space-between}.back-button,.header-nav{align-items:center;display:flex}.back-button{background:none;border:none;border-radius:12px;border-radius:var(--radius);color:#4a5568;color:var(--text-secondary);cursor:pointer;font-size:.875rem;font-weight:500;gap:.5rem;padding:.5rem 1rem;transition:all .2s ease}.back-button:hover{background:#f7fafc;background:var(--background);color:#2d3748;color:var(--text-primary)}.user-profile{gap:.75rem}.user-avatar,.user-profile{align-items:center;display:flex}.user-avatar{background:linear-gradient(135deg,#667eea,#764ba2);background:var(--primary-gradient);border-radius:50%;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;box-shadow:var(--shadow);color:#fff;font-size:1.125rem;font-weight:600;height:48px;justify-content:center;width:48px}.user-info{text-align:left}.user-name{color:#2d3748;color:var(--text-primary);font-size:1rem;font-weight:600;margin-bottom:.125rem}.user-email{color:#718096;color:var(--text-muted);font-size:.875rem}.section-header{margin-bottom:2rem;text-align:center}.section-title{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#667eea,#764ba2);background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;font-size:2rem;font-weight:700;margin-bottom:.5rem}.section-subtitle{color:#718096;color:var(--text-muted);font-size:1rem}.courses-grid{grid-gap:1.5rem;display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.course-card{animation:fadeInUp .6s ease-out both;background:#fff;background:var(--surface);border:2px solid #0000;border-radius:16px;border-radius:var(--radius-lg);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;box-shadow:var(--shadow);cursor:pointer;padding:1.5rem;transition:all .3s ease}.course-card:hover{border-color:#667eea33;box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;box-shadow:var(--shadow-lg);transform:translateY(-4px)}.course-card{gap:1rem}.course-card,.course-icon{align-items:center;display:flex}.course-icon{background:#f7fafc;background:var(--background);border-radius:12px;border-radius:var(--radius);font-size:2.5rem;height:60px;justify-content:center;width:60px}.course-info{flex:1 1}.course-name{color:#2d3748;color:var(--text-primary);font-size:1.25rem;font-weight:600;margin-bottom:.25rem}.course-count{font-size:.875rem}.course-arrow,.course-count{color:#718096;color:var(--text-muted)}.course-arrow{transition:transform .2s ease}.course-card:hover .course-arrow{transform:translateX(4px)}.notes-grid{grid-gap:1.5rem;display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.note-card{animation:fadeInUp .6s ease-out 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1}.note-title{color:#2d3748;color:var(--text-primary);font-size:1.125rem;font-weight:600;line-height:1.4;margin-bottom:.25rem}.note-type{color:#718096;color:var(--text-muted);font-size:.875rem}.download-button{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);background:var(--primary-gradient);border:none;border-radius:12px;border-radius:var(--radius);color:#fff;cursor:pointer;display:flex;font-size:.875rem;font-weight:600;gap:.5rem;justify-content:center;padding:.75rem 1rem;transition:all .2s ease;width:100%}.download-button:hover{box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;box-shadow:var(--shadow);transform:translateY(-1px)}.download-button:active{transform:translateY(0)}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media 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